/* roulang page: index */
:root {
            --bg-deep: #1A1C23;
            --gold: #D4AF37;
            --gold-dark: #B8960F;
            --bg-page: #F8F9FA;
            --white: #FFFFFF;
            --text-main: #333333;
            --text-light: #6B7280;
            --text-weak: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F0F0F0;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.14);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --sidebar-w: 240px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Segoe UI", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-page);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--gold);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }

        /* App Shell Layout */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: var(--bg-deep);
            z-index: 100;
            display: flex;
            flex-direction: column;
            padding: 28px 0 20px;
            overflow-y: auto;
            transition: transform var(--transition-smooth);
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.25);
        }
        .sidebar-logo {
            padding: 0 24px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 8px;
        }
        .sidebar-logo a {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }
        .sidebar-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--gold);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            font-weight: 900;
            flex-shrink: 0;
        }
        .sidebar-nav {
            flex: 1;
            padding: 12px 0;
        }
        .sidebar-nav ul li {
            position: relative;
        }
        .sidebar-nav ul li a {
            display: flex;
            align-items: center;
            padding: 13px 24px;
            color: rgba(255, 255, 255, 0.78);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition-fast);
            position: relative;
            gap: 10px;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }
        .sidebar-nav ul li a .nav-icon {
            width: 20px;
            text-align: center;
            font-size: 14px;
            flex-shrink: 0;
        }
        .sidebar-nav ul li a::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 0;
            background: var(--gold);
            border-radius: 0 3px 3px 0;
            transition: height var(--transition-fast);
        }
        .sidebar-nav ul li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
            padding-left: 28px;
        }
        .sidebar-nav ul li a:hover::before {
            height: 60%;
        }
        .sidebar-nav ul li.active a {
            color: #fff;
            background: rgba(212, 175, 55, 0.12);
            font-weight: 600;
        }
        .sidebar-nav ul li.active a::before {
            height: 70%;
            width: 4px;
        }
        .sidebar-footer-info {
            padding: 16px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            line-height: 1.6;
        }

        /* Main Content */
        .main-content {
            margin-left: var(--sidebar-w);
            flex: 1;
            min-width: 0;
            width: calc(100% - var(--sidebar-w));
        }

        /* Mobile Top Bar */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--bg-deep);
            z-index: 99;
            align-items: center;
            padding: 0 16px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }
        .mobile-topbar .hamburger {
            background: none;
            border: none;
            color: #fff;
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
            line-height: 1;
            flex-shrink: 0;
        }
        .mobile-topbar .topbar-logo {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-left: 10px;
            letter-spacing: 1px;
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 98;
            opacity: 0;
            transition: opacity var(--transition-smooth);
            pointer-events: none;
        }
        .sidebar-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        /* Section Spacing */
        .section {
            padding: 70px 40px;
        }
        .section-sm {
            padding: 50px 40px;
        }
        .section-lg {
            padding: 90px 40px;
        }
        .section-dark {
            background: var(--bg-deep);
            color: #fff;
        }
        .section-light {
            background: #F0F2F5;
        }
        .section-white {
            background: #fff;
        }
        .container-inner {
            max-width: 1100px;
            margin: 0 auto;
        }

        /* Section Titles */
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--gold);
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 14px;
            color: var(--text-main);
        }
        .section-dark .section-title {
            color: #fff;
        }
        .section-subtitle {
            font-size: 17px;
            color: var(--text-light);
            line-height: 1.7;
            max-width: 680px;
            margin-bottom: 30px;
        }
        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            min-height: 580px;
            display: flex;
            align-items: center;
            padding: 80px 40px;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 28, 35, 0.88) 0%, rgba(26, 28, 35, 0.65) 50%, rgba(26, 28, 35, 0.82) 100%);
            z-index: 1;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 1100px;
            margin: 0 auto;
            width: 100%;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 50px;
        }
        .hero-text {
            flex: 1 1 480px;
            min-width: 0;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(212, 175, 55, 0.2);
            color: var(--gold);
            padding: 7px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 18px;
            border: 1px solid rgba(212, 175, 55, 0.3);
        }
        .hero-title {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .hero-title .gold-accent {
            color: var(--gold);
            position: relative;
        }
        .hero-title .gold-accent::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--gold);
            border-radius: 2px;
        }
        .hero-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .btn-gold {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--gold);
            color: #fff;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .btn-gold:hover {
            background: var(--gold-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(212, 175, 55, 0.35);
        }
        .btn-gold:focus {
            box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.3);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            padding: 12px 26px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 500;
            border: 2px solid rgba(255, 255, 255, 0.5);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }
        .hero-countdown {
            flex: 0 0 auto;
            background: rgba(255, 255, 255, 0.07);
            backdrop-filter: blur(10px);
            border-radius: var(--radius-lg);
            padding: 30px 36px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            text-align: center;
            min-width: 240px;
        }
        .countdown-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            letter-spacing: 2px;
            margin-bottom: 14px;
            font-weight: 500;
        }
        .countdown-timer {
            display: flex;
            gap: 12px;
            justify-content: center;
        }
        .countdown-unit {
            background: rgba(212, 175, 55, 0.2);
            border-radius: var(--radius-md);
            padding: 14px 10px;
            min-width: 58px;
            border: 1px solid rgba(212, 175, 55, 0.3);
        }
        .countdown-num {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            line-height: 1;
        }
        .countdown-sublabel {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }

        /* Feature Cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }
        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid var(--border);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .feature-card .feat-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-sm);
            background: rgba(212, 175, 55, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--gold);
            margin-bottom: 16px;
        }
        .feature-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
        }
        .feature-card .card-gold-line {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--gold);
            transition: width var(--transition-smooth);
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        }
        .feature-card:hover .card-gold-line {
            width: 100%;
        }

        /* Params Quick View */
        .params-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: #fff;
        }
        .param-item {
            padding: 28px 20px;
            text-align: center;
            border-right: 1px solid var(--border);
            transition: background var(--transition-fast);
        }
        .param-item:last-child {
            border-right: none;
        }
        .param-item:hover {
            background: #fafbfc;
        }
        .param-value {
            font-size: 40px;
            font-weight: 800;
            color: var(--gold);
            line-height: 1;
            margin-bottom: 6px;
        }
        .param-label {
            font-size: 14px;
            color: var(--text-light);
        }

        /* Solution Alternating */
        .solution-row {
            display: flex;
            align-items: center;
            gap: 50px;
            margin-bottom: 50px;
        }
        .solution-row:last-child {
            margin-bottom: 0;
        }
        .solution-row.reverse {
            flex-direction: row-reverse;
        }
        .solution-img {
            flex: 1 1 400px;
            min-width: 0;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .solution-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .solution-text {
            flex: 1 1 400px;
            min-width: 0;
        }
        .solution-text h3 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .solution-text p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.9;
        }

        /* Data Wall */
        .data-wall {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 40px;
        }
        .data-item {
            text-align: center;
            flex: 0 0 auto;
            min-width: 140px;
        }
        .data-number {
            font-size: 64px;
            font-weight: 800;
            color: var(--gold);
            line-height: 1;
            letter-spacing: -1px;
        }
        .data-suffix {
            font-size: 28px;
            font-weight: 600;
            color: var(--gold);
        }
        .data-desc {
            font-size: 15px;
            color: var(--text-light);
            margin-top: 6px;
        }

        /* News List */
        .news-list-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition-fast);
        }
        .news-list-item:hover {
            background: #fafcfd;
            padding-left: 12px;
            border-radius: var(--radius-sm);
        }
        .news-date {
            flex: 0 0 90px;
            font-size: 13px;
            color: var(--text-weak);
            padding-top: 3px;
            white-space: nowrap;
        }
        .news-body {
            flex: 1;
            min-width: 0;
        }
        .news-body h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 5px;
            color: var(--text-main);
        }
        .news-body h4 a:hover {
            color: var(--gold);
        }
        .news-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .news-readmore {
            flex: 0 0 auto;
            font-size: 14px;
            color: var(--gold);
            font-weight: 600;
            white-space: nowrap;
            transition: all var(--transition-fast);
            padding-top: 3px;
        }
        .news-readmore:hover {
            color: var(--gold-dark);
            transform: translateX(4px);
        }

        /* Testimonials */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }
        .testimonial-card {
            background: linear-gradient(135deg, #fdfcf9 0%, #faf8f2 100%);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid #ece8dc;
            transition: all var(--transition-smooth);
            position: relative;
        }
        .testimonial-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .testimonial-card .quote-mark {
            font-size: 48px;
            color: rgba(212, 175, 55, 0.3);
            line-height: 1;
            margin-bottom: 6px;
        }
        .testimonial-card .quote-text {
            font-size: 15px;
            color: var(--text-main);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .testimonial-card .user-info {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .testimonial-card .user-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #e0d8c4;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #8b7d5e;
            font-size: 16px;
        }
        .testimonial-card .user-name {
            font-weight: 600;
            font-size: 14px;
            color: var(--text-main);
        }
        .testimonial-card .user-role {
            font-size: 12px;
            color: var(--text-weak);
        }

        /* Changelog */
        .changelog-item {
            padding: 22px 0;
            border-bottom: 1px solid var(--border-light);
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        .changelog-version {
            flex: 0 0 100px;
            font-weight: 700;
            font-size: 15px;
            color: var(--gold);
            white-space: nowrap;
        }
        .changelog-detail h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .changelog-detail p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* Ranking Table */
        .ranking-table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .ranking-table th {
            background: #f5f6f8;
            padding: 14px 16px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-light);
            text-align: left;
            letter-spacing: 0.5px;
        }
        .ranking-table td {
            padding: 14px 16px;
            border-bottom: 1px solid var(--border-light);
            font-size: 15px;
        }
        .ranking-table .rank-num {
            font-weight: 700;
            color: var(--gold);
            font-size: 18px;
        }
        .ranking-table .rank-hot {
            display: inline-block;
            background: #fff3e0;
            color: #e67e22;
            padding: 3px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 600;
        }
        .ranking-table tbody tr:hover {
            background: #fafcfd;
        }

        /* Reward Preview */
        .reward-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
        }
        .reward-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            border: 1px solid var(--border);
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .reward-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--gold);
        }
        .reward-icon {
            font-size: 40px;
            margin-bottom: 12px;
        }
        .reward-card h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .reward-card p {
            font-size: 13px;
            color: var(--text-light);
        }

        /* FAQ Accordion */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            margin-bottom: 0;
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 0;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            text-align: left;
            gap: 12px;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--gold);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #f0f0f0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: all var(--transition-smooth);
            color: var(--text-light);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background: var(--gold);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0;
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 0 18px;
        }
        .faq-answer-inner {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
            background: #f9fafb;
            padding: 16px 20px;
            border-radius: var(--radius-sm);
        }

        /* CTA Section */
        .cta-section {
            background: var(--bg-deep);
            text-align: center;
            padding: 70px 40px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(212, 175, 55, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section .cta-title {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section .cta-subtitle {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
        }
        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 500px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-input {
            flex: 1 1 260px;
            padding: 13px 18px;
            border-radius: var(--radius-sm);
            border: 2px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
            font-size: 15px;
            transition: all var(--transition-fast);
            min-width: 200px;
        }
        .cta-input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }
        .cta-input:focus {
            border-color: var(--gold);
            background: rgba(255, 255, 255, 0.1);
            box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.15);
        }

        /* Brand Intro */
        .brand-intro-block {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
            padding: 40px 0;
        }
        .brand-intro-block h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text-main);
        }
        .brand-intro-block p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 2;
        }

        /* Social Proof */
        .social-proof-strip {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: 40px;
            padding: 20px 0;
        }
        .social-proof-item {
            text-align: center;
            flex: 0 0 auto;
            min-width: 100px;
        }
        .social-proof-item .stars {
            color: var(--gold);
            font-size: 20px;
            letter-spacing: 2px;
        }
        .social-proof-item .sp-label {
            font-size: 13px;
            color: var(--text-light);
            margin-top: 4px;
        }

        /* Footer */
        .site-footer {
            background: #14161b;
            color: rgba(255, 255, 255, 0.65);
            padding: 40px;
            font-size: 13px;
            line-height: 1.8;
        }
        .footer-inner {
            max-width: 1100px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 30px;
            align-items: flex-start;
        }
        .footer-left p {
            margin: 0;
        }
        .footer-right {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            align-items: center;
        }
        .footer-right a {
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition-fast);
        }
        .footer-right a:hover {
            color: var(--gold);
        }
        .back-to-top {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 2px solid var(--gold);
            color: var(--gold);
            cursor: pointer;
            transition: all var(--transition-fast);
            font-size: 16px;
            flex-shrink: 0;
        }
        .back-to-top:hover {
            background: var(--gold);
            color: #fff;
        }

        /* Animation */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-on-scroll {
            animation: fadeInUp 0.7s ease forwards;
        }
        .animate-delay-1 {
            animation-delay: 0.15s;
        }
        .animate-delay-2 {
            animation-delay: 0.3s;
        }
        .animate-delay-3 {
            animation-delay: 0.45s;
        }

        /* Responsive */
        @media screen and (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay {
                display: block;
            }
            .mobile-topbar {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                width: 100%;
                padding-top: 56px;
            }
            .section,
            .section-sm,
            .section-lg {
                padding: 40px 20px;
            }
            .hero-section {
                padding: 60px 20px;
                min-height: auto;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-inner {
                flex-direction: column;
                gap: 30px;
            }
            .hero-countdown {
                width: 100%;
            }
            .params-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solution-row,
            .solution-row.reverse {
                flex-direction: column;
                gap: 24px;
            }
            .data-wall {
                gap: 24px;
            }
            .data-number {
                font-size: 44px;
            }
            .section-title {
                font-size: 26px;
            }
            .ranking-table {
                font-size: 13px;
            }
            .ranking-table th,
            .ranking-table td {
                padding: 10px 8px;
            }
            .cta-section .cta-title {
                font-size: 26px;
            }
            .footer-inner {
                flex-direction: column;
                text-align: center;
                gap: 16px;
            }
            .footer-right {
                justify-content: center;
            }
        }
        @media screen and (max-width: 640px) {
            .hero-title {
                font-size: 26px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-gold,
            .hero-actions .btn-outline-light {
                justify-content: center;
                width: 100%;
            }
            .params-grid {
                grid-template-columns: 1fr 1fr;
            }
            .param-value {
                font-size: 30px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .reward-grid {
                grid-template-columns: 1fr 1fr;
            }
            .data-wall {
                flex-direction: column;
                align-items: center;
                gap: 20px;
            }
            .news-list-item {
                flex-direction: column;
                gap: 6px;
            }
            .news-date {
                flex: unset;
            }
            .section-title {
                font-size: 22px;
            }
            .countdown-timer {
                gap: 6px;
            }
            .countdown-unit {
                min-width: 44px;
                padding: 10px 6px;
            }
            .countdown-num {
                font-size: 26px;
            }
            .changelog-item {
                flex-direction: column;
                gap: 6px;
            }
            .social-proof-strip {
                gap: 20px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #1A1C23;
            --gold: #D4AF37;
            --gold-dark: #B8960F;
            --bg-page: #F8F9FA;
            --white: #FFFFFF;
            --text-main: #333333;
            --text-light: #6B7280;
            --text-weak: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F0F0F0;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.14);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --sidebar-w: 240px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Segoe UI", sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-page);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--gold);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input {
            font-family: inherit;
            outline: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0 0 0.5em;
            line-height: 1.3;
            font-weight: 700;
            color: inherit;
        }

        h1 {
            font-size: 42px;
            letter-spacing: -0.5px;
        }
        h2 {
            font-size: 32px;
        }
        h3 {
            font-size: 24px;
        }
        h4 {
            font-size: 20px;
        }

        p {
            margin: 0 0 1em;
        }

        /* Layout */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        /* Sidebar */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: var(--bg-deep);
            z-index: 100;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            overflow-x: hidden;
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.25);
            transition: transform var(--transition-smooth);
        }

        .sidebar-logo {
            padding: 20px 24px 18px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 4px;
            flex-shrink: 0;
        }

        .sidebar-logo a {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .sidebar-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--gold);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            font-weight: 900;
            flex-shrink: 0;
        }

        .sidebar-nav {
            flex: 1;
            padding: 8px 0;
            overflow-y: auto;
        }

        .sidebar-nav ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .sidebar-nav ul li {
            position: relative;
        }

        .sidebar-nav ul li a {
            display: flex;
            align-items: center;
            padding: 13px 24px;
            color: rgba(255, 255, 255, 0.78);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition-fast);
            position: relative;
            gap: 10px;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .sidebar-nav ul li a .nav-icon {
            width: 20px;
            text-align: center;
            font-size: 14px;
            flex-shrink: 0;
        }

        .sidebar-nav ul li a::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 0;
            background: var(--gold);
            border-radius: 0 3px 3px 0;
            transition: height var(--transition-fast);
        }

        .sidebar-nav ul li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
            padding-left: 28px;
        }

        .sidebar-nav ul li a:hover::before {
            height: 60%;
        }

        .sidebar-nav ul li.active a {
            color: #fff;
            background: rgba(212, 175, 55, 0.12);
            font-weight: 600;
        }

        .sidebar-nav ul li.active a::before {
            height: 70%;
            width: 4px;
        }

        .sidebar-footer-info {
            padding: 14px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            line-height: 1.6;
            flex-shrink: 0;
        }

        /* Main Content */
        .main-content {
            margin-left: var(--sidebar-w);
            flex: 1;
            min-width: 0;
            width: calc(100% - var(--sidebar-w));
        }

        /* Mobile Top Bar */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--bg-deep);
            z-index: 99;
            align-items: center;
            padding: 0 16px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }

        .mobile-topbar .hamburger {
            background: none;
            border: none;
            color: #fff;
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
            line-height: 1;
            flex-shrink: 0;
        }

        .mobile-topbar .topbar-logo {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-left: 10px;
            letter-spacing: 1px;
        }

        /* Overlay */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 98;
            transition: opacity var(--transition-smooth);
        }

        .sidebar-overlay.active {
            display: block;
        }

        /* Section Spacing */
        .section {
            padding: 60px 40px;
        }
        .section-sm {
            padding: 40px 40px;
        }
        .section-lg {
            padding: 80px 40px;
        }
        .section-dark {
            background: var(--bg-deep);
            color: #fff;
        }
        .section-light {
            background: #F0F2F5;
        }
        .section-white {
            background: #fff;
        }
        .container-inner {
            max-width: 1100px;
            margin: 0 auto;
        }

        /* Section Label */
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--gold);
            margin-bottom: 8px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 18px;
            color: var(--text-light);
            margin-bottom: 30px;
            line-height: 1.6;
            max-width: 700px;
        }

        /* Hero Section */
        .hero-category {
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: center;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 28, 35, 0.88) 0%, rgba(26, 28, 35, 0.7) 50%, rgba(26, 28, 35, 0.55) 100%);
            z-index: 1;
        }

        .hero-category .hero-inner {
            position: relative;
            z-index: 2;
            padding: 60px 40px;
            max-width: 1100px;
            margin: 0 auto;
            width: 100%;
        }

        .hero-category .hero-badge {
            display: inline-block;
            background: var(--gold);
            color: #1A1C23;
            font-weight: 700;
            font-size: 13px;
            padding: 6px 16px;
            border-radius: 20px;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .hero-category h1 {
            color: #fff;
            font-size: 44px;
            font-weight: 700;
            margin-bottom: 14px;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }

        .hero-category .hero-desc {
            color: rgba(255, 255, 255, 0.85);
            font-size: 18px;
            line-height: 1.7;
            max-width: 600px;
            margin-bottom: 24px;
        }

        .hero-category .hero-cta-row {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: center;
        }

        .btn-gold {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--gold);
            color: #1A1C23;
            font-weight: 700;
            font-size: 15px;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .btn-gold:hover {
            background: var(--gold-dark);
            color: #1A1C23;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(212, 175, 55, 0.35);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 26px;
            border-radius: var(--radius-sm);
            border: 2px solid rgba(255, 255, 255, 0.5);
            cursor: pointer;
            transition: all var(--transition-fast);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .btn-outline-light:hover {
            border-color: var(--gold);
            color: var(--gold);
            background: rgba(212, 175, 55, 0.08);
        }

        .hero-trust-strip {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            align-items: center;
            margin-top: 20px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
        }

        .hero-trust-strip span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-trust-strip i {
            color: var(--gold);
            font-size: 14px;
        }

        /* Feature Cards */
        .feature-cards-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-smooth);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--gold);
        }

        .feature-card .feat-icon {
            width: 56px;
            height: 56px;
            background: rgba(212, 175, 55, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 24px;
            color: var(--gold);
        }

        .feature-card h4 {
            font-size: 18px;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            margin: 0;
        }

        /* Guide Cards Grid */
        .guide-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .guide-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border);
        }

        .guide-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
        }

        .guide-card .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .guide-card .card-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--gold);
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .guide-card h4 {
            font-size: 17px;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .guide-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 12px;
        }

        .guide-card .card-link {
            font-weight: 600;
            font-size: 14px;
            color: var(--gold);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-fast);
        }

        .guide-card .card-link:hover {
            gap: 10px;
            color: var(--gold-dark);
        }

        /* Steps */
        .steps-list {
            display: flex;
            gap: 0;
            position: relative;
            flex-wrap: wrap;
        }

        .steps-list::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 60px;
            right: 60px;
            height: 2px;
            background: var(--border);
            z-index: 0;
        }

        .step-item {
            flex: 1;
            min-width: 180px;
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 12px;
        }

        .step-num {
            width: 80px;
            height: 80px;
            background: #fff;
            border: 3px solid var(--gold);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            font-weight: 700;
            color: var(--gold);
            margin: 0 auto 16px;
            position: relative;
            z-index: 1;
        }

        .step-item h4 {
            font-size: 17px;
            margin-bottom: 6px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.5;
            margin: 0;
        }

        /* Scenario Cards */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .scenario-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-smooth);
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border);
        }

        .scenario-card .sc-icon {
            width: 50px;
            height: 50px;
            background: rgba(212, 175, 55, 0.1);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--gold);
            flex-shrink: 0;
        }

        .scenario-card h4 {
            font-size: 17px;
            margin-bottom: 4px;
        }
        .scenario-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.5;
            margin: 0;
        }

        /* Stats Bar */
        .stats-row {
            display: flex;
            gap: 0;
            flex-wrap: wrap;
        }
        .stat-item {
            flex: 1;
            min-width: 160px;
            text-align: center;
            padding: 30px 16px;
            border-right: 1px solid var(--border-light);
        }
        .stat-item:last-child {
            border-right: none;
        }
        .stat-num {
            font-size: 48px;
            font-weight: 700;
            color: var(--gold);
            line-height: 1;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-light);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            background: #fff;
            transition: box-shadow var(--transition-fast);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            color: var(--text-main);
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--gold);
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(212, 175, 55, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--gold);
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background: var(--gold);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
        }

        .faq-answer-inner {
            padding: 0 20px 20px;
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-light);
        }

        /* CTA Section */
        .cta-section {
            background: var(--bg-deep);
            text-align: center;
            padding: 70px 40px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(212, 175, 55, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 34px;
            margin-bottom: 12px;
            position: relative;
        }
        .cta-section .cta-sub {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 28px;
            position: relative;
        }

        .cta-form-row {
            display: flex;
            gap: 10px;
            max-width: 500px;
            margin: 0 auto;
            position: relative;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-input {
            flex: 1;
            min-width: 220px;
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            border: 2px solid transparent;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 15px;
            transition: all var(--transition-fast);
        }

        .cta-input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .cta-input:focus {
            border-color: var(--gold);
            background: rgba(255, 255, 255, 0.15);
        }

        /* Footer */
        .site-footer {
            background: #14161C;
            color: rgba(255, 255, 255, 0.7);
            padding: 28px 40px;
            font-size: 13px;
        }

        .footer-inner {
            max-width: 1100px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-left p {
            margin: 0 0 4px;
            line-height: 1.6;
        }

        .footer-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .footer-right a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 13px;
            transition: color var(--transition-fast);
        }
        .footer-right a:hover {
            color: var(--gold);
        }

        .back-to-top {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 2px solid var(--gold);
            background: transparent;
            color: var(--gold);
            cursor: pointer;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
        }

        .back-to-top:hover {
            background: var(--gold);
            color: #14161C;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .main-content {
                margin-left: 0;
                width: 100%;
            }
            .mobile-topbar {
                display: flex;
            }
            .main-content {
                padding-top: 56px;
            }
            .section,
            .section-sm,
            .section-lg {
                padding: 40px 20px;
            }
            .hero-category .hero-inner {
                padding: 40px 20px;
            }
            .hero-category h1 {
                font-size: 32px;
            }
            .hero-category .hero-desc {
                font-size: 16px;
            }
            .feature-cards-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .guide-cards-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .steps-list {
                flex-direction: column;
                gap: 24px;
            }
            .steps-list::before {
                display: none;
            }
            .step-item {
                min-width: auto;
            }
            .stats-row {
                flex-wrap: wrap;
            }
            .stat-item {
                flex: 1 1 45%;
                border-right: none;
                border-bottom: 1px solid var(--border-light);
                padding: 20px 12px;
            }
            .section-title {
                font-size: 26px;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .footer-inner {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 640px) {
            .feature-cards-row {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .guide-cards-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .hero-category h1 {
                font-size: 26px;
            }
            .hero-category .hero-desc {
                font-size: 15px;
            }
            .hero-category .hero-cta-row {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-gold,
            .btn-outline-light {
                justify-content: center;
                text-align: center;
            }
            .scenario-card {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
            .section-title {
                font-size: 22px;
            }
            .stat-num {
                font-size: 36px;
            }
            .cta-form-row {
                flex-direction: column;
            }
            .cta-input {
                min-width: auto;
            }
            .hero-trust-strip {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-deep: #1A1C23;
            --gold: #D4AF37;
            --gold-dark: #B8960F;
            --bg-page: #F8F9FA;
            --white: #FFFFFF;
            --text-main: #333333;
            --text-light: #6B7280;
            --text-weak: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F0F0F0;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.14);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --sidebar-w: 240px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Segoe UI", sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-page);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--gold);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input {
            font-family: inherit;
            outline: none;
        }

        /* Sidebar */
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: var(--bg-deep);
            z-index: 100;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            box-shadow: 2px 0 24px rgba(0, 0, 0, 0.25);
        }

        .sidebar-logo {
            padding: 20px 24px 18px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 6px;
            flex-shrink: 0;
        }

        .sidebar-logo a {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .sidebar-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--gold);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            font-weight: 900;
            flex-shrink: 0;
        }

        .sidebar-nav {
            flex: 1;
            padding: 10px 0;
            overflow-y: auto;
        }

        .sidebar-nav ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .sidebar-nav ul li {
            position: relative;
        }

        .sidebar-nav ul li a {
            display: flex;
            align-items: center;
            padding: 13px 24px;
            color: rgba(255, 255, 255, 0.78);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition-fast);
            position: relative;
            gap: 10px;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .sidebar-nav ul li a .nav-icon {
            width: 20px;
            text-align: center;
            font-size: 14px;
            flex-shrink: 0;
        }

        .sidebar-nav ul li a::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 0;
            background: var(--gold);
            border-radius: 0 3px 3px 0;
            transition: height var(--transition-fast);
        }

        .sidebar-nav ul li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
            padding-left: 28px;
        }

        .sidebar-nav ul li a:hover::before {
            height: 60%;
        }

        .sidebar-nav ul li.active a {
            color: #fff;
            background: rgba(212, 175, 55, 0.12);
            font-weight: 600;
        }

        .sidebar-nav ul li.active a::before {
            height: 70%;
            width: 4px;
        }

        .sidebar-footer-info {
            padding: 14px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            line-height: 1.6;
            flex-shrink: 0;
        }

        /* Main Content */
        .main-content {
            margin-left: var(--sidebar-w);
            flex: 1;
            min-width: 0;
            width: calc(100% - var(--sidebar-w));
            min-height: 100vh;
        }

        /* Mobile Top Bar */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--bg-deep);
            z-index: 99;
            align-items: center;
            padding: 0 16px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }

        .mobile-topbar .hamburger {
            background: none;
            border: none;
            color: #fff;
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
            line-height: 1;
            flex-shrink: 0;
        }

        .mobile-topbar .topbar-logo {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-left: 10px;
            letter-spacing: 1px;
        }

        /* Sidebar overlay for mobile */
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.55);
            z-index: 98;
            transition: opacity var(--transition-smooth);
            opacity: 0;
            pointer-events: none;
        }

        .sidebar-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        /* Section Spacing */
        .section {
            padding: 60px 40px;
        }

        .section-sm {
            padding: 40px 40px;
        }

        .section-lg {
            padding: 80px 40px;
        }

        .section-dark {
            background: var(--bg-deep);
            color: #fff;
        }

        .section-light {
            background: #F0F2F5;
        }

        .section-white {
            background: #fff;
        }

        .container-inner {
            max-width: 1100px;
            margin: 0 auto;
        }

        /* Section Titles */
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--gold);
            margin-bottom: 8px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
            color: inherit;
        }

        .section-subtitle {
            font-size: 17px;
            color: var(--text-light);
            line-height: 1.6;
            max-width: 680px;
            margin-bottom: 28px;
        }

        /* Buttons */
        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-smooth);
            border: none;
            letter-spacing: 0.5px;
            text-align: center;
            line-height: 1.4;
        }

        .btn-gold {
            background: var(--gold);
            color: #fff;
            box-shadow: 0 4px 14px rgba(212, 175, 55, 0.35);
        }

        .btn-gold:hover {
            background: var(--gold-dark);
            color: #fff;
            box-shadow: 0 6px 20px rgba(212, 175, 55, 0.5);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: var(--gold);
            border: 2px solid var(--gold);
        }

        .btn-outline:hover {
            background: var(--gold);
            color: #fff;
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }

        .btn-outline-light:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        /* Hero */
        .category-hero {
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            min-height: 420px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 28, 35, 0.88) 0%, rgba(26, 28, 35, 0.65) 50%, rgba(26, 28, 35, 0.82) 100%);
            z-index: 1;
        }

        .category-hero .hero-inner {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 60px 40px;
            max-width: 1100px;
            margin: 0 auto;
        }

        .category-hero .hero-badge {
            display: inline-block;
            background: var(--gold);
            color: #fff;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .category-hero h1 {
            font-size: 44px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .category-hero .hero-desc {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            max-width: 600px;
            margin-bottom: 28px;
        }

        .category-hero .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* Cards */
        .card {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
            border: 1px solid var(--border-light);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--gold);
        }

        .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            flex-shrink: 0;
        }

        .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text-main);
        }

        .card-body .card-text {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 12px;
        }

        .card-body .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--gold);
            letter-spacing: 0.5px;
            text-transform: uppercase;
            align-self: flex-start;
        }

        .card-body .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--gold);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-fast);
            align-self: flex-start;
            margin-top: auto;
        }

        .card-body .card-link:hover {
            gap: 10px;
            color: var(--gold-dark);
        }

        /* Feature List */
        .feature-row {
            display: flex;
            gap: 30px;
            align-items: center;
            flex-wrap: wrap;
        }

        .feature-row.reverse {
            flex-direction: row-reverse;
        }

        .feature-row .feature-img {
            flex: 1;
            min-width: 300px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .feature-row .feature-img img {
            width: 100%;
            height: auto;
            display: block;
        }

        .feature-row .feature-text {
            flex: 1;
            min-width: 300px;
        }

        .feature-row .feature-text h3 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .feature-row .feature-text p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* List Items */
        .list-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            align-items: flex-start;
            transition: all var(--transition-fast);
        }

        .list-item:hover {
            background: rgba(212, 175, 55, 0.03);
            padding-left: 8px;
            border-radius: var(--radius-sm);
        }

        .list-item .list-thumb {
            width: 140px;
            height: 90px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            object-fit: cover;
        }

        .list-item .list-info {
            flex: 1;
            min-width: 0;
        }

        .list-item .list-info .list-date {
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 4px;
            letter-spacing: 0.5px;
        }

        .list-item .list-info h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .list-item .list-info .list-excerpt {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .list-item .list-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--gold);
            white-space: nowrap;
            flex-shrink: 0;
            align-self: center;
            display: flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }

        .list-item .list-link:hover {
            gap: 8px;
            color: var(--gold-dark);
        }

        /* Stats */
        .stats-row {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
            justify-content: center;
            text-align: center;
        }

        .stat-item {
            flex: 1;
            min-width: 160px;
            padding: 20px;
        }

        .stat-item .stat-number {
            font-size: 56px;
            font-weight: 800;
            color: var(--gold);
            line-height: 1;
            margin-bottom: 8px;
            letter-spacing: -1px;
        }

        .stat-item .stat-label {
            font-size: 15px;
            color: var(--text-light);
            font-weight: 500;
        }

        /* FAQ Accordion */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            overflow: hidden;
            background: #fff;
            transition: all var(--transition-fast);
        }

        .faq-item .faq-question {
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
            transition: background var(--transition-fast);
            color: var(--text-main);
        }

        .faq-item .faq-question:hover {
            background: #fafafa;
        }

        .faq-item .faq-question .faq-icon {
            font-size: 14px;
            color: var(--gold);
            transition: transform var(--transition-smooth);
            flex-shrink: 0;
        }

        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 22px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
            background: #fafbfc;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 18px 22px;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }

        .faq-item.open {
            border-color: var(--gold);
            box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.08);
        }

        /* CTA */
        .cta-section {
            background: var(--bg-deep);
            text-align: center;
            padding: 70px 40px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(212, 175, 55, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 650px;
            margin: 0 auto;
        }

        .cta-section h2 {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .cta-section .cta-form {
            display: flex;
            gap: 10px;
            max-width: 480px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-section .cta-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            border: 2px solid transparent;
            font-size: 15px;
            background: #fff;
            transition: all var(--transition-fast);
        }

        .cta-section .cta-form input:focus {
            border-color: var(--gold);
            box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.12);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, 0.7);
            padding: 32px 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-inner {
            max-width: 1100px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-left {
            font-size: 13px;
            line-height: 1.8;
        }

        .footer-left p {
            margin: 0;
        }

        .footer-right {
            display: flex;
            align-items: center;
            gap: 18px;
            font-size: 13px;
        }

        .footer-right a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition-fast);
        }

        .footer-right a:hover {
            color: var(--gold);
        }

        .back-to-top {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 2px solid rgba(255, 255, 255, 0.3);
            background: transparent;
            color: #fff;
            cursor: pointer;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .back-to-top:hover {
            border-color: var(--gold);
            color: var(--gold);
            background: rgba(212, 175, 55, 0.1);
        }

        /* Responsive */
        @media screen and (max-width: 1024px) {
            .app-sidebar {
                transform: translateX(-100%);
                transition: transform var(--transition-smooth);
                width: 260px;
                z-index: 101;
            }

            .app-sidebar.mobile-open {
                transform: translateX(0);
            }

            .sidebar-overlay {
                display: block;
            }

            .mobile-topbar {
                display: flex;
            }

            .main-content {
                margin-left: 0;
                width: 100%;
                padding-top: 56px;
            }

            .category-hero h1 {
                font-size: 32px;
            }

            .category-hero .hero-desc {
                font-size: 16px;
            }

            .section {
                padding: 40px 20px;
            }

            .section-lg {
                padding: 50px 20px;
            }

            .section-sm {
                padding: 30px 20px;
            }

            .category-hero .hero-inner {
                padding: 40px 20px;
            }

            .feature-row,
            .feature-row.reverse {
                flex-direction: column;
            }

            .feature-row .feature-img,
            .feature-row .feature-text {
                min-width: 100%;
            }

            .stats-row {
                gap: 16px;
            }

            .stat-item .stat-number {
                font-size: 40px;
            }

            .list-item {
                flex-direction: column;
                gap: 12px;
            }

            .list-item .list-thumb {
                width: 100%;
                height: 160px;
            }

            .list-item .list-link {
                align-self: flex-start;
            }

            .site-footer {
                padding: 24px 20px;
            }

            .footer-inner {
                flex-direction: column;
                text-align: center;
            }

            .section-title {
                font-size: 26px;
            }
        }

        @media screen and (max-width: 640px) {
            .category-hero {
                min-height: 340px;
            }

            .category-hero h1 {
                font-size: 26px;
            }

            .category-hero .hero-desc {
                font-size: 15px;
            }

            .category-hero .hero-actions {
                flex-direction: column;
                gap: 10px;
            }

            .category-hero .hero-actions .btn {
                width: 100%;
                text-align: center;
            }

            .section-title {
                font-size: 22px;
            }

            .stat-item .stat-number {
                font-size: 34px;
            }

            .cta-section h2 {
                font-size: 24px;
            }

            .cta-section .cta-form {
                flex-direction: column;
            }

            .cta-section .cta-form input {
                width: 100%;
            }

            .cta-section .cta-form .btn {
                width: 100%;
            }

            .card-body h3 {
                font-size: 16px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-deep: #1A1C23;
            --gold: #D4AF37;
            --gold-dark: #B8960F;
            --bg-page: #F8F9FA;
            --white: #FFFFFF;
            --text-main: #333333;
            --text-light: #6B7280;
            --text-weak: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F0F0F0;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.14);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --sidebar-w: 240px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Segoe UI", sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-page);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
            display: flex;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--gold);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input {
            font-family: inherit;
            outline: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0 0 0.5em;
            line-height: 1.3;
        }

        p {
            margin: 0 0 1em;
        }

        ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        /* ========== Sidebar ========== */
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: var(--bg-deep);
            z-index: 100;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.25);
            transition: transform var(--transition-smooth);
        }

        .sidebar-logo {
            padding: 0 24px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 8px;
            flex-shrink: 0;
        }

        .sidebar-logo a {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .sidebar-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--gold);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            font-weight: 900;
            flex-shrink: 0;
        }

        .sidebar-nav {
            flex: 1;
            padding: 12px 0;
        }

        .sidebar-nav ul li {
            position: relative;
        }

        .sidebar-nav ul li a {
            display: flex;
            align-items: center;
            padding: 13px 24px;
            color: rgba(255, 255, 255, 0.78);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition-fast);
            position: relative;
            gap: 10px;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .sidebar-nav ul li a .nav-icon {
            width: 20px;
            text-align: center;
            font-size: 14px;
            flex-shrink: 0;
        }

        .sidebar-nav ul li a::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 0;
            background: var(--gold);
            border-radius: 0 3px 3px 0;
            transition: height var(--transition-fast);
        }

        .sidebar-nav ul li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
            padding-left: 28px;
        }

        .sidebar-nav ul li a:hover::before {
            height: 60%;
        }

        .sidebar-nav ul li.active a {
            color: #fff;
            background: rgba(212, 175, 55, 0.12);
            font-weight: 600;
        }

        .sidebar-nav ul li.active a::before {
            height: 70%;
            width: 4px;
        }

        .sidebar-footer-info {
            padding: 16px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            line-height: 1.6;
            flex-shrink: 0;
        }

        /* ========== Main Content Area ========== */
        .main-content {
            margin-left: var(--sidebar-w);
            flex: 1;
            min-width: 0;
            width: calc(100% - var(--sidebar-w));
        }

        /* ========== Mobile Top Bar ========== */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--bg-deep);
            z-index: 99;
            align-items: center;
            padding: 0 16px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }

        .mobile-topbar .hamburger {
            background: none;
            border: none;
            color: #fff;
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
            line-height: 1;
            flex-shrink: 0;
        }

        .mobile-topbar .topbar-logo {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-left: 10px;
            letter-spacing: 1px;
        }

        /* Overlay */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 98;
            transition: opacity var(--transition-smooth);
        }

        .sidebar-overlay.active {
            display: block;
        }

        /* ========== Section Spacing ========== */
        .section {
            padding: 60px 40px;
        }

        .section-sm {
            padding: 40px 40px;
        }

        .section-lg {
            padding: 80px 40px;
        }

        .section-dark {
            background: var(--bg-deep);
            color: #fff;
        }

        .section-light {
            background: #F0F2F5;
        }

        .section-white {
            background: #fff;
        }

        .container-inner {
            max-width: 1100px;
            margin: 0 auto;
        }

        /* ========== Section Titles ========== */
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--gold);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .section-dark .section-title {
            color: #fff;
        }

        .section-subtitle {
            font-size: 17px;
            color: var(--text-light);
            max-width: 700px;
            line-height: 1.7;
        }

        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ========== Buttons ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all var(--transition-fast);
            border: none;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .btn-gold {
            background: var(--gold);
            color: #fff;
        }

        .btn-gold:hover {
            background: var(--gold-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(212, 175, 55, 0.35);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--gold);
            color: var(--gold);
        }

        .btn-outline:hover {
            background: var(--gold);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-white {
            background: #fff;
            color: var(--bg-deep);
        }

        .btn-white:hover {
            background: #f0f0f0;
            color: var(--bg-deep);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 255, 255, 0.3);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 17px;
        }

        /* ========== Hero Banner (矮横幅) ========== */
        .hero-banner {
            position: relative;
            padding: 80px 40px 70px;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            min-height: 340px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 28, 35, 0.88) 0%, rgba(26, 28, 35, 0.65) 60%, rgba(26, 28, 35, 0.5) 100%);
            z-index: 1;
        }

        .hero-banner-content {
            position: relative;
            z-index: 2;
            max-width: 1100px;
            margin: 0 auto;
            width: 100%;
        }

        .hero-banner-content .hero-badge {
            display: inline-block;
            background: var(--gold);
            color: #fff;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .hero-banner-content h1 {
            font-size: 40px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 1px;
            line-height: 1.25;
        }

        .hero-banner-content .hero-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .hero-banner-content .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ========== Card Grid ========== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .card-grid.cols-2 {
            grid-template-columns: repeat(2, 1fr);
        }

        .card-grid.cols-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .event-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-smooth);
            cursor: pointer;
            display: flex;
            flex-direction: column;
        }

        .event-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--gold);
        }

        .event-card .card-img-wrap {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #e9ecef;
        }

        .event-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .event-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }

        .event-card .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--gold);
            color: #fff;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
            z-index: 2;
        }

        .event-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .event-card .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
            transition: color var(--transition-fast);
        }

        .event-card:hover .card-title {
            color: var(--gold);
        }

        .event-card .card-meta {
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 10px;
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .event-card .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .event-card .card-desc {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 14px;
        }

        .event-card .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--gold);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-fast);
        }

        .event-card .card-link:hover {
            gap: 10px;
            color: var(--gold-dark);
        }

        /* ========== Feature List ========== */
        .feature-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .feature-item {
            display: flex;
            gap: 18px;
            padding: 20px;
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
        }

        .feature-item:hover {
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .feature-item .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(212, 175, 55, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--gold);
            flex-shrink: 0;
        }

        .feature-item .feature-text h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-main);
        }

        .feature-item .feature-text p {
            font-size: 14px;
            color: var(--text-light);
            margin: 0;
            line-height: 1.6;
        }

        /* ========== Process Steps ========== */
        .process-steps {
            display: flex;
            gap: 0;
            align-items: flex-start;
            position: relative;
        }

        .process-step {
            flex: 1;
            text-align: center;
            position: relative;
            padding: 0 16px;
        }

        .process-step .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--gold);
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            position: relative;
            z-index: 2;
            box-shadow: 0 6px 20px rgba(212, 175, 55, 0.3);
        }

        .process-step .step-connector {
            position: absolute;
            top: 28px;
            left: 60%;
            width: 80%;
            height: 2px;
            background: var(--border);
            z-index: 1;
        }

        .process-step:last-child .step-connector {
            display: none;
        }

        .process-step h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-light);
            margin: 0;
            line-height: 1.5;
        }

        /* ========== Testimonial Cards ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-smooth);
            position: relative;
        }

        .testimonial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .testimonial-card .quote-icon {
            font-size: 36px;
            color: rgba(212, 175, 55, 0.2);
            position: absolute;
            top: 18px;
            right: 22px;
        }

        .testimonial-card .testimonial-text {
            font-size: 15px;
            color: var(--text-main);
            line-height: 1.7;
            margin-bottom: 16px;
            font-style: italic;
        }

        .testimonial-card .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testimonial-card .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: #e0e0e0;
            flex-shrink: 0;
            overflow: hidden;
        }

        .testimonial-card .author-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .testimonial-card .author-info .author-name {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
        }

        .testimonial-card .author-info .author-role {
            font-size: 12px;
            color: var(--text-weak);
        }

        /* ========== FAQ Accordion ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            background: #fff;
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: #d0d0d0;
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            text-align: left;
            gap: 14px;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--gold);
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(212, 175, 55, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--gold);
            transition: all var(--transition-smooth);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background: var(--gold);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* ========== CTA Section ========== */
        .cta-section {
            background: var(--bg-deep);
            text-align: center;
            padding: 70px 40px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(212, 175, 55, 0.08);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(212, 175, 55, 0.06);
            pointer-events: none;
        }

        .cta-section .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 650px;
            margin: 0 auto;
        }

        .cta-section h2 {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .cta-section .cta-form {
            display: flex;
            gap: 10px;
            max-width: 480px;
            margin: 0 auto;
        }

        .cta-section .cta-input {
            flex: 1;
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            border: 2px solid transparent;
            font-size: 15px;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transition: all var(--transition-fast);
        }

        .cta-section .cta-input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }

        .cta-section .cta-input:focus {
            border-color: var(--gold);
            background: rgba(255, 255, 255, 0.14);
            outline: none;
            box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.1);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, 0.6);
            padding: 32px 40px;
            font-size: 13px;
            line-height: 1.8;
        }

        .footer-inner {
            max-width: 1100px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            flex-wrap: wrap;
            gap: 20px;
        }

        .footer-left p {
            margin: 0;
            font-size: 13px;
        }

        .footer-right {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .footer-right a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            transition: color var(--transition-fast);
        }

        .footer-right a:hover {
            color: var(--gold);
        }

        .back-to-top {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 2px solid var(--gold);
            background: transparent;
            color: var(--gold);
            cursor: pointer;
            font-size: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
        }

        .back-to-top:hover {
            background: var(--gold);
            color: #fff;
            transform: translateY(-3px);
        }

        /* ========== Past Events ========== */
        .past-event-row {
            display: flex;
            gap: 20px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-light);
            align-items: center;
            transition: all var(--transition-fast);
        }

        .past-event-row:hover {
            background: #fafbfc;
            padding-left: 12px;
            border-radius: var(--radius-sm);
        }

        .past-event-row .past-date {
            width: 90px;
            flex-shrink: 0;
            font-size: 14px;
            color: var(--text-weak);
            text-align: center;
            line-height: 1.4;
        }

        .past-event-row .past-date .day {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            display: block;
        }

        .past-event-row .past-thumb {
            width: 100px;
            height: 66px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: #e9ecef;
        }

        .past-event-row .past-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .past-event-row .past-info {
            flex: 1;
            min-width: 0;
        }

        .past-event-row .past-info h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-main);
        }

        .past-event-row .past-info .past-meta {
            font-size: 13px;
            color: var(--text-weak);
        }

        .past-event-row .past-link {
            flex-shrink: 0;
            font-size: 13px;
            font-weight: 600;
            color: var(--gold);
            display: flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }

        .past-event-row .past-link:hover {
            gap: 8px;
            color: var(--gold-dark);
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .app-sidebar {
                transform: translateX(-100%);
            }

            .app-sidebar.open {
                transform: translateX(0);
            }

            .main-content {
                margin-left: 0;
                width: 100%;
            }

            .mobile-topbar {
                display: flex;
            }

            .main-content {
                padding-top: 56px;
            }

            .section,
            .section-sm,
            .section-lg {
                padding: 40px 20px;
            }

            .hero-banner {
                padding: 50px 20px 40px;
                min-height: 260px;
            }

            .hero-banner-content h1 {
                font-size: 30px;
            }

            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

            .card-grid.cols-4 {
                grid-template-columns: repeat(2, 1fr);
            }

            .feature-list {
                grid-template-columns: 1fr;
            }

            .testimonial-grid {
                grid-template-columns: 1fr;
            }

            .process-steps {
                flex-wrap: wrap;
                gap: 24px;
            }

            .process-step {
                flex: 1 1 45%;
                min-width: 160px;
            }

            .process-step .step-connector {
                display: none;
            }

            .section-title {
                font-size: 26px;
            }

            .cta-section h2 {
                font-size: 26px;
            }

            .cta-section .cta-form {
                flex-direction: column;
                max-width: 100%;
            }

            .footer-inner {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }

            .past-event-row {
                flex-wrap: wrap;
                gap: 12px;
            }

            .past-event-row .past-date {
                width: auto;
                text-align: left;
            }

            .past-event-row .past-date .day {
                font-size: 22px;
                display: inline;
            }
        }

        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .card-grid.cols-2,
            .card-grid.cols-4 {
                grid-template-columns: 1fr;
            }

            .hero-banner-content h1 {
                font-size: 24px;
            }

            .hero-banner-content .hero-desc {
                font-size: 15px;
            }

            .hero-banner-content .hero-actions {
                flex-direction: column;
            }

            .section-title {
                font-size: 22px;
            }

            .feature-item {
                flex-direction: column;
                gap: 10px;
            }

            .past-event-row .past-thumb {
                width: 70px;
                height: 50px;
            }

            .past-event-row .past-info h4 {
                font-size: 14px;
            }

            .cta-section {
                padding: 50px 20px;
            }

            .cta-section h2 {
                font-size: 22px;
            }

            .testimonial-card {
                padding: 20px;
            }
        }

/* roulang page: category4 */
:root {
            --bg-deep: #1A1C23;
            --gold: #D4AF37;
            --gold-dark: #B8960F;
            --bg-page: #F8F9FA;
            --white: #FFFFFF;
            --text-main: #333333;
            --text-light: #6B7280;
            --text-weak: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F0F0F0;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.14);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --sidebar-w: 240px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Segoe UI", sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-page);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
            display: flex;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--gold);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input {
            font-family: inherit;
            outline: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            line-height: 1.3;
        }

        p {
            margin: 0 0 1em;
        }

        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        /* Sidebar */
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: var(--bg-deep);
            z-index: 100;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            transition: transform var(--transition-smooth);
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.25);
        }

        .sidebar-logo {
            padding: 20px 24px 18px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 4px;
            flex-shrink: 0;
        }

        .sidebar-logo a {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .sidebar-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--gold);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            font-weight: 900;
            flex-shrink: 0;
        }

        .sidebar-nav {
            flex: 1;
            padding: 10px 0;
        }

        .sidebar-nav ul li {
            position: relative;
        }

        .sidebar-nav ul li a {
            display: flex;
            align-items: center;
            padding: 13px 24px;
            color: rgba(255, 255, 255, 0.78);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition-fast);
            position: relative;
            gap: 10px;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .sidebar-nav ul li a .nav-icon {
            width: 20px;
            text-align: center;
            font-size: 14px;
            flex-shrink: 0;
        }

        .sidebar-nav ul li a::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 0;
            background: var(--gold);
            border-radius: 0 3px 3px 0;
            transition: height var(--transition-fast);
        }

        .sidebar-nav ul li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
            padding-left: 28px;
        }

        .sidebar-nav ul li a:hover::before {
            height: 60%;
        }

        .sidebar-nav ul li.active a {
            color: #fff;
            background: rgba(212, 175, 55, 0.12);
            font-weight: 600;
        }

        .sidebar-nav ul li.active a::before {
            height: 70%;
            width: 4px;
        }

        .sidebar-footer-info {
            padding: 14px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            line-height: 1.6;
            flex-shrink: 0;
        }

        /* Main Content */
        .main-content {
            margin-left: var(--sidebar-w);
            flex: 1;
            min-width: 0;
            width: calc(100% - var(--sidebar-w));
        }

        /* Mobile Top Bar */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--bg-deep);
            z-index: 99;
            align-items: center;
            padding: 0 16px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }

        .mobile-topbar .hamburger {
            background: none;
            border: none;
            color: #fff;
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
            line-height: 1;
            flex-shrink: 0;
        }

        .mobile-topbar .topbar-logo {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-left: 10px;
            letter-spacing: 1px;
        }

        /* Sidebar overlay */
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 98;
            transition: opacity var(--transition-smooth);
        }

        .sidebar-overlay.active {
            display: block;
        }

        /* Section Spacing */
        .section {
            padding: 65px 40px;
        }

        .section-sm {
            padding: 45px 40px;
        }

        .section-lg {
            padding: 85px 40px;
        }

        .section-dark {
            background: var(--bg-deep);
            color: #fff;
        }

        .section-light {
            background: #F0F2F5;
        }

        .section-white {
            background: #fff;
        }

        .container-inner {
            max-width: 1060px;
            margin: 0 auto;
        }

        /* Section Titles */
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--gold);
            margin-bottom: 8px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            line-height: 1.25;
        }

        .section-dark .section-title {
            color: #fff;
        }

        .section-subtitle {
            font-size: 17px;
            color: var(--text-light);
            max-width: 640px;
            line-height: 1.7;
            margin-bottom: 30px;
        }

        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        /* Hero */
        .hero-category {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            background-position: center 40%;
            overflow: hidden;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 28, 35, 0.88) 0%, rgba(26, 28, 35, 0.65) 50%, rgba(26, 28, 35, 0.78) 100%);
            z-index: 1;
        }

        .hero-category .hero-inner {
            position: relative;
            z-index: 2;
            padding: 60px 40px;
            max-width: 1060px;
            margin: 0 auto;
            width: 100%;
        }

        .hero-category .hero-badge {
            display: inline-block;
            background: var(--gold);
            color: #fff;
            font-size: 13px;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 20px;
            letter-spacing: 1.5px;
            margin-bottom: 18px;
        }

        .hero-category h1 {
            font-size: 44px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .hero-category .hero-desc {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.82);
            max-width: 560px;
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .hero-category .hero-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--gold);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            letter-spacing: 0.5px;
        }

        .hero-category .hero-cta:hover {
            background: var(--gold-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(212, 175, 55, 0.35);
        }

        /* Info Block */
        .info-block {
            display: flex;
            align-items: center;
            gap: 50px;
            flex-wrap: wrap;
        }

        .info-block.reverse {
            flex-direction: row-reverse;
        }

        .info-block .info-image {
            flex: 1 1 400px;
            min-width: 280px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .info-block .info-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 16/10;
        }

        .info-block .info-text {
            flex: 1 1 360px;
            min-width: 280px;
        }

        .info-block .info-text h3 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-main);
        }

        .info-block .info-text p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        /* Dimension Cards */
        .dimension-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
        }

        .dimension-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .dimension-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--gold);
        }

        .dimension-card .dim-icon {
            width: 56px;
            height: 56px;
            background: rgba(212, 175, 55, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 24px;
            color: var(--gold);
            transition: all var(--transition-fast);
        }

        .dimension-card:hover .dim-icon {
            background: var(--gold);
            color: #fff;
        }

        .dimension-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .dimension-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            margin: 0;
        }

        /* Process Steps */
        .process-steps {
            display: flex;
            flex-wrap: wrap;
            gap: 0;
            counter-reset: step;
            position: relative;
        }

        .process-step {
            flex: 1 1 200px;
            min-width: 180px;
            text-align: center;
            padding: 30px 20px;
            position: relative;
            counter-increment: step;
        }

        .process-step::after {
            content: '';
            position: absolute;
            top: 50px;
            right: -20px;
            width: 40px;
            height: 2px;
            background: var(--border);
            z-index: 0;
        }

        .process-step:last-child::after {
            display: none;
        }

        .process-step .step-number {
            width: 48px;
            height: 48px;
            background: var(--bg-deep);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 20px;
            margin: 0 auto 14px;
            position: relative;
            z-index: 1;
            border: 3px solid var(--gold);
        }

        .process-step h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-main);
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-light);
            margin: 0;
            line-height: 1.6;
        }

        /* Review Cards */
        .review-cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 28px;
        }

        .review-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .review-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--gold);
        }

        .review-card .card-img {
            width: 100%;
            aspect-ratio: 16/10;
            overflow: hidden;
            position: relative;
        }

        .review-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .review-card:hover .card-img img {
            transform: scale(1.05);
        }

        .review-card .card-img .score-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            background: var(--gold);
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            padding: 6px 14px;
            border-radius: 20px;
            letter-spacing: 0.5px;
            z-index: 2;
        }

        .review-card .card-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .review-card .card-body h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .review-card .card-body .card-meta {
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 10px;
        }

        .review-card .card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 14px;
        }

        .review-card .card-body .read-more {
            font-weight: 600;
            font-size: 14px;
            color: var(--gold);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-fast);
            align-self: flex-start;
        }

        .review-card .card-body .read-more:hover {
            gap: 10px;
            color: var(--gold-dark);
        }

        /* Stats Strip */
        .stats-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            justify-content: center;
            text-align: center;
        }

        .stat-item {
            flex: 1 1 160px;
            min-width: 140px;
            padding: 20px;
        }

        .stat-item .stat-number {
            font-size: 56px;
            font-weight: 700;
            color: var(--gold);
            line-height: 1;
            margin-bottom: 8px;
            font-variant-numeric: tabular-nums;
        }

        .stat-item .stat-label {
            font-size: 15px;
            color: var(--text-light);
            font-weight: 500;
        }

        .section-dark .stat-item .stat-label {
            color: rgba(255, 255, 255, 0.7);
        }

        /* Testimonials */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .testimonial-card {
            background: linear-gradient(135deg, #fff 0%, #fafbfc 100%);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
            position: relative;
        }

        .testimonial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .testimonial-card .quote-icon {
            font-size: 36px;
            color: var(--gold);
            opacity: 0.5;
            margin-bottom: 10px;
            line-height: 1;
        }

        .testimonial-card .quote-text {
            font-size: 15px;
            color: var(--text-main);
            line-height: 1.7;
            margin-bottom: 16px;
            font-style: italic;
        }

        .testimonial-card .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .testimonial-card .author-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--border-light);
            flex-shrink: 0;
            overflow: hidden;
        }

        .testimonial-card .author-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .testimonial-card .author-name {
            font-weight: 600;
            font-size: 14px;
            color: var(--text-main);
        }

        .testimonial-card .author-role {
            font-size: 12px;
            color: var(--text-weak);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            background: #fff;
            transition: box-shadow var(--transition-fast);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 22px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            line-height: 1.5;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--gold);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(212, 175, 55, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--gold);
            transition: all var(--transition-fast);
        }

        .faq-item.open .faq-question .faq-icon {
            background: var(--gold);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* CTA Section */
        .cta-section {
            text-align: center;
            background: var(--bg-deep);
            color: #fff;
            padding: 70px 40px;
        }

        .cta-section .cta-title {
            font-size: 34px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-section .cta-subtitle {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--gold);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            letter-spacing: 0.5px;
        }

        .cta-section .cta-btn:hover {
            background: var(--gold-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(212, 175, 55, 0.4);
            color: #fff;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, 0.7);
            padding: 28px 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-inner {
            max-width: 1060px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .footer-left {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-left p {
            margin: 0;
        }

        .footer-right {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
        }

        .footer-right a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-fast);
        }

        .footer-right a:hover {
            color: var(--gold);
        }

        .back-to-top {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 2px solid var(--gold);
            background: transparent;
            color: var(--gold);
            cursor: pointer;
            font-size: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
        }

        .back-to-top:hover {
            background: var(--gold);
            color: #fff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .app-sidebar {
                transform: translateX(-100%);
            }

            .app-sidebar.open {
                transform: translateX(0);
            }

            .main-content {
                margin-left: 0;
                width: 100%;
            }

            .mobile-topbar {
                display: flex;
            }

            .main-content {
                padding-top: 56px;
            }

            .hero-category h1 {
                font-size: 32px;
            }

            .hero-category .hero-desc {
                font-size: 16px;
            }

            .section {
                padding: 45px 24px;
            }

            .section-sm {
                padding: 35px 24px;
            }

            .section-lg {
                padding: 55px 24px;
            }

            .section-title {
                font-size: 26px;
            }

            .info-block {
                gap: 30px;
            }

            .process-steps {
                gap: 16px;
            }

            .process-step::after {
                display: none;
            }

            .process-step {
                flex: 1 1 140px;
                min-width: 140px;
                padding: 20px 12px;
            }

            .review-cards-grid {
                grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
                gap: 20px;
            }

            .testimonial-grid {
                grid-template-columns: 1fr;
            }

            .stat-item .stat-number {
                font-size: 42px;
            }

            .cta-section .cta-title {
                font-size: 26px;
            }

            .footer-inner {
                flex-direction: column;
                text-align: center;
            }

            .dimension-grid {
                grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
                gap: 16px;
            }
        }

        @media (max-width: 640px) {
            .hero-category {
                min-height: 340px;
            }

            .hero-category .hero-inner {
                padding: 40px 20px;
            }

            .hero-category h1 {
                font-size: 26px;
            }

            .hero-category .hero-desc {
                font-size: 15px;
            }

            .section {
                padding: 35px 16px;
            }

            .section-sm {
                padding: 28px 16px;
            }

            .section-lg {
                padding: 40px 16px;
            }

            .section-title {
                font-size: 22px;
            }

            .section-subtitle {
                font-size: 15px;
            }

            .info-block {
                flex-direction: column !important;
                gap: 20px;
            }

            .info-block .info-image {
                flex: 1 1 auto;
                min-width: 100%;
            }

            .info-block .info-text {
                flex: 1 1 auto;
                min-width: 100%;
            }

            .info-block .info-text h3 {
                font-size: 22px;
            }

            .review-cards-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .dimension-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .dimension-card {
                padding: 20px 16px;
            }

            .dimension-card .dim-icon {
                width: 44px;
                height: 44px;
                font-size: 20px;
            }

            .process-step {
                flex: 1 1 100%;
                min-width: 100%;
                padding: 16px 10px;
            }

            .stat-item .stat-number {
                font-size: 36px;
            }

            .stat-item .stat-label {
                font-size: 13px;
            }

            .stats-strip {
                gap: 16px;
            }

            .testimonial-card {
                padding: 22px 18px;
            }

            .cta-section {
                padding: 50px 20px;
            }

            .cta-section .cta-title {
                font-size: 22px;
            }

            .site-footer {
                padding: 20px 16px;
            }

            .footer-right {
                gap: 12px;
                justify-content: center;
            }

            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }

            .faq-answer-inner {
                padding: 0 18px 16px;
                font-size: 14px;
            }
        }

/* roulang page: category6 */
:root {
            --bg-deep: #1A1C23;
            --gold: #D4AF37;
            --gold-dark: #B8960F;
            --bg-page: #F8F9FA;
            --white: #FFFFFF;
            --text-main: #333333;
            --text-light: #6B7280;
            --text-weak: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F0F0F0;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.14);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --sidebar-w: 240px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Segoe UI", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-page);
            min-height: 100vh;
            overflow-x: hidden;
            display: flex;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--gold);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            outline: none;
        }

        /* Sidebar */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: var(--bg-deep);
            z-index: 100;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.25);
            transition: transform var(--transition-smooth);
        }
        .sidebar-logo {
            padding: 20px 24px 18px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 6px;
            flex-shrink: 0;
        }
        .sidebar-logo a {
            font-size: 21px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }
        .sidebar-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--gold);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            color: #fff;
            font-weight: 900;
            flex-shrink: 0;
        }
        .sidebar-nav {
            flex: 1;
            padding: 10px 0;
        }
        .sidebar-nav ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .sidebar-nav ul li {
            position: relative;
        }
        .sidebar-nav ul li a {
            display: flex;
            align-items: center;
            padding: 13px 24px;
            color: rgba(255, 255, 255, 0.78);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition-fast);
            position: relative;
            gap: 10px;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }
        .sidebar-nav ul li a .nav-icon {
            width: 20px;
            text-align: center;
            font-size: 14px;
            flex-shrink: 0;
        }
        .sidebar-nav ul li a::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 0;
            background: var(--gold);
            border-radius: 0 3px 3px 0;
            transition: height var(--transition-fast);
        }
        .sidebar-nav ul li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
            padding-left: 28px;
        }
        .sidebar-nav ul li a:hover::before {
            height: 60%;
        }
        .sidebar-nav ul li.active a {
            color: #fff;
            background: rgba(212, 175, 55, 0.12);
            font-weight: 600;
        }
        .sidebar-nav ul li.active a::before {
            height: 70%;
            width: 4px;
        }
        .sidebar-footer-info {
            padding: 14px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            line-height: 1.6;
            flex-shrink: 0;
        }

        /* Main Content */
        .main-content {
            margin-left: var(--sidebar-w);
            flex: 1;
            min-width: 0;
            width: calc(100% - var(--sidebar-w));
        }

        /* Mobile Top Bar */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--bg-deep);
            z-index: 99;
            align-items: center;
            padding: 0 16px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }
        .mobile-topbar .hamburger {
            background: none;
            border: none;
            color: #fff;
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
            line-height: 1;
            flex-shrink: 0;
        }
        .mobile-topbar .topbar-logo {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-left: 10px;
            letter-spacing: 1px;
        }

        /* Overlay */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 98;
            opacity: 0;
            transition: opacity var(--transition-smooth);
            pointer-events: none;
        }
        .sidebar-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        /* Section Spacing */
        .section {
            padding: 70px 40px;
        }
        .section-sm {
            padding: 50px 40px;
        }
        .section-lg {
            padding: 90px 40px;
        }
        .section-dark {
            background: var(--bg-deep);
            color: #fff;
        }
        .section-light {
            background: #F0F2F5;
        }
        .section-white {
            background: #fff;
        }
        .container-inner {
            max-width: 1100px;
            margin: 0 auto;
        }

        /* Section Titles */
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--gold);
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--text-main);
        }
        .section-dark .section-title {
            color: #fff;
        }
        .section-subtitle {
            font-size: 17px;
            color: var(--text-light);
            line-height: 1.7;
            max-width: 680px;
        }
        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-title-divider {
            width: 50px;
            height: 3px;
            background: var(--gold);
            border-radius: 2px;
            margin-bottom: 20px;
        }

        /* Hero */
        .hero-booking {
            position: relative;
            min-height: 520px;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            display: flex;
            align-items: center;
            padding: 80px 40px;
            overflow: hidden;
        }
        .hero-booking::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, rgba(26, 28, 35, 0.82) 0%, rgba(26, 28, 35, 0.55) 50%, rgba(26, 28, 35, 0.7) 100%);
            z-index: 1;
        }
        .hero-booking-content {
            position: relative;
            z-index: 2;
            max-width: 1100px;
            margin: 0 auto;
            width: 100%;
        }
        .hero-booking-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 28px;
            position: relative;
            z-index: 3;
        }
        .hero-booking-tag {
            display: inline-block;
            padding: 10px 20px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 30px;
            color: #fff;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.5px;
            backdrop-filter: blur(4px);
        }
        .hero-booking-tag:hover {
            background: var(--gold);
            border-color: var(--gold);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(212, 175, 55, 0.35);
        }
        .hero-booking-tag i {
            margin-right: 6px;
            font-size: 12px;
        }
        .hero-booking h1 {
            font-size: 46px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: 1px;
            position: relative;
            z-index: 3;
        }
        .hero-booking h1 .gold-line {
            display: block;
            width: 60px;
            height: 3px;
            background: var(--gold);
            border-radius: 2px;
            margin-top: 16px;
        }
        .hero-booking .hero-sub {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.78);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 30px;
            position: relative;
            z-index: 3;
        }
        .btn-gold {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: var(--gold);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            letter-spacing: 0.5px;
            position: relative;
            z-index: 3;
            text-decoration: none;
        }
        .btn-gold:hover {
            background: var(--gold-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 175, 55, 0.4);
        }
        .btn-gold:focus {
            box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.3);
        }
        .btn-gold i {
            transition: transform var(--transition-fast);
        }
        .btn-gold:hover i {
            transform: translateX(3px);
        }

        /* Cards */
        .card-feature {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card-feature:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: var(--gold);
        }
        .card-feature .card-icon-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(212, 175, 55, 0.15) 0%, rgba(212, 175, 55, 0.05) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--gold);
            margin-bottom: 18px;
            flex-shrink: 0;
        }
        .card-feature h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .card-feature p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
            flex: 1;
        }

        /* Steps */
        .step-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0;
            counter-reset: step;
            position: relative;
        }
        .step-item {
            flex: 1 1 220px;
            text-align: center;
            padding: 30px 20px;
            position: relative;
            counter-increment: step;
        }
        .step-item::after {
            content: '';
            position: absolute;
            top: 50px;
            right: -20px;
            width: 40px;
            height: 2px;
            background: var(--border);
            border-radius: 1px;
        }
        .step-item:last-child::after {
            display: none;
        }
        .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--gold);
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            position: relative;
            z-index: 2;
        }
        .step-item h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* Info Row */
        .info-row {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            align-items: center;
        }
        .info-row.reverse {
            flex-direction: row-reverse;
        }
        .info-row .info-img {
            flex: 1 1 400px;
            min-width: 280px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .info-row .info-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .info-row .info-text {
            flex: 1 1 380px;
            min-width: 280px;
        }
        .info-row .info-text h3 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-main);
        }
        .info-row .info-text p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* Stats */
        .stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            justify-content: center;
            text-align: center;
        }
        .stat-item {
            flex: 1 1 180px;
            min-width: 150px;
            padding: 20px;
        }
        .stat-number {
            font-size: 56px;
            font-weight: 800;
            color: var(--gold);
            line-height: 1;
            margin-bottom: 8px;
        }
        .stat-number span {
            font-size: 36px;
        }
        .stat-label {
            font-size: 15px;
            color: var(--text-light);
            font-weight: 500;
        }
        .section-dark .stat-label {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-dark .stat-number {
            color: var(--gold);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            background: #fff;
            transition: box-shadow var(--transition-fast);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            padding: 18px 24px;
            background: none;
            border: none;
            text-align: left;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            line-height: 1.5;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--gold);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(212, 175, 55, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--gold);
            transition: all var(--transition-smooth);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background: var(--gold);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
            padding: 0 24px;
            background: #FAFBFC;
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 16px 24px 20px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
            margin: 0;
        }

        /* CTA Section */
        .cta-section {
            background: var(--bg-deep);
            text-align: center;
            padding: 80px 40px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(212, 175, 55, 0.06);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            position: relative;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 30px;
            position: relative;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-outline-gold {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: transparent;
            color: var(--gold);
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            border: 2px solid var(--gold);
            cursor: pointer;
            transition: all var(--transition-fast);
            letter-spacing: 0.5px;
            text-decoration: none;
        }
        .btn-outline-gold:hover {
            background: var(--gold);
            color: #fff;
            border-color: var(--gold);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 175, 55, 0.35);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, 0.7);
            padding: 32px 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-inner {
            max-width: 1100px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
        }
        .footer-left {
            font-size: 13px;
            line-height: 1.8;
        }
        .footer-left p {
            margin: 0;
        }
        .footer-right {
            display: flex;
            align-items: center;
            gap: 20px;
            font-size: 14px;
        }
        .footer-right a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition-fast);
        }
        .footer-right a:hover {
            color: var(--gold);
        }
        .back-to-top {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 2px solid rgba(255, 255, 255, 0.3);
            background: transparent;
            color: rgba(255, 255, 255, 0.7);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
            font-size: 16px;
        }
        .back-to-top:hover {
            border-color: var(--gold);
            color: var(--gold);
            background: rgba(212, 175, 55, 0.1);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay {
                display: block;
            }
            .main-content {
                margin-left: 0;
                width: 100%;
            }
            .mobile-topbar {
                display: flex;
            }
            .main-content {
                padding-top: 56px;
            }
            .hero-booking {
                min-height: 420px;
                padding: 60px 24px;
            }
            .hero-booking h1 {
                font-size: 34px;
            }
            .hero-booking .hero-sub {
                font-size: 16px;
            }
            .section {
                padding: 50px 24px;
            }
            .section-lg {
                padding: 60px 24px;
            }
            .section-sm {
                padding: 36px 24px;
            }
            .section-title {
                font-size: 26px;
            }
            .step-item::after {
                display: none;
            }
            .info-row,
            .info-row.reverse {
                flex-direction: column;
            }
            .info-row .info-img {
                flex: 1 1 auto;
                min-width: 100%;
            }
            .info-row .info-text {
                flex: 1 1 auto;
                min-width: 100%;
            }
            .hero-booking-tags {
                gap: 8px;
            }
            .hero-booking-tag {
                padding: 8px 16px;
                font-size: 13px;
            }
            .stat-number {
                font-size: 40px;
            }
            .footer-inner {
                flex-direction: column;
                text-align: center;
            }
            .footer-right {
                flex-wrap: wrap;
                justify-content: center;
            }
        }
        @media (max-width: 639px) {
            .hero-booking {
                min-height: 360px;
                padding: 40px 16px;
            }
            .hero-booking h1 {
                font-size: 28px;
            }
            .hero-booking .hero-sub {
                font-size: 15px;
            }
            .hero-booking-tag {
                padding: 7px 13px;
                font-size: 12px;
                border-radius: 24px;
            }
            .section {
                padding: 40px 16px;
            }
            .section-lg {
                padding: 50px 16px;
            }
            .section-title {
                font-size: 22px;
            }
            .card-feature {
                padding: 24px 18px;
            }
            .btn-gold {
                padding: 12px 24px;
                font-size: 15px;
            }
            .cta-section {
                padding: 50px 20px;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .stats-row {
                gap: 16px;
            }
            .stat-item {
                flex: 1 1 120px;
                min-width: 120px;
                padding: 12px;
            }
            .stat-number {
                font-size: 34px;
            }
            .faq-question {
                font-size: 15px;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 12px 16px 16px;
            }
            .site-footer {
                padding: 24px 16px;
            }
        }

/* roulang page: category5 */
:root {
            --bg-deep: #1A1C23;
            --gold: #D4AF37;
            --gold-dark: #B8960F;
            --gold-light: #F0E6C8;
            --bg-page: #F8F9FA;
            --white: #FFFFFF;
            --text-main: #333333;
            --text-light: #6B7280;
            --text-weak: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F0F0F0;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.14);
            --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.18);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --radius-2xl: 20px;
            --sidebar-w: 240px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Segoe UI", sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            box-sizing: border-box;
        }

        *,
        *::before,
        *::after {
            box-sizing: inherit;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-page);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
            display: flex;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast), background var(--transition-fast);
        }

        a:hover {
            color: var(--gold);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            outline: none;
            border: none;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            line-height: 1.3;
        }

        p {
            margin: 0;
        }

        /* ========== SIDEBAR ========== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: var(--bg-deep);
            z-index: 100;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.25);
            transition: transform var(--transition-smooth);
        }

        .sidebar-logo {
            padding: 20px 24px 18px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 4px;
            flex-shrink: 0;
        }

        .sidebar-logo a {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .sidebar-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--gold);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            font-weight: 900;
            flex-shrink: 0;
        }

        .sidebar-nav {
            flex: 1;
            padding: 8px 0;
            overflow-y: auto;
        }

        .sidebar-nav ul li {
            position: relative;
        }

        .sidebar-nav ul li a {
            display: flex;
            align-items: center;
            padding: 13px 24px;
            color: rgba(255, 255, 255, 0.78);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition-fast);
            position: relative;
            gap: 10px;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .sidebar-nav ul li a .nav-icon {
            width: 20px;
            text-align: center;
            font-size: 14px;
            flex-shrink: 0;
        }

        .sidebar-nav ul li a::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 0;
            background: var(--gold);
            border-radius: 0 3px 3px 0;
            transition: height var(--transition-fast);
        }

        .sidebar-nav ul li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
            padding-left: 28px;
        }

        .sidebar-nav ul li a:hover::before {
            height: 60%;
        }

        .sidebar-nav ul li.active a {
            color: #fff;
            background: rgba(212, 175, 55, 0.12);
            font-weight: 600;
        }

        .sidebar-nav ul li.active a::before {
            height: 70%;
            width: 4px;
        }

        .sidebar-footer-info {
            padding: 14px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            line-height: 1.6;
            flex-shrink: 0;
        }

        /* ========== MAIN CONTENT ========== */
        .main-content {
            margin-left: var(--sidebar-w);
            flex: 1;
            min-width: 0;
            width: calc(100% - var(--sidebar-w));
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ========== MOBILE TOP BAR ========== */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--bg-deep);
            z-index: 99;
            align-items: center;
            padding: 0 16px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }

        .mobile-topbar .hamburger {
            background: none;
            border: none;
            color: #fff;
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
            line-height: 1;
            flex-shrink: 0;
        }

        .mobile-topbar .topbar-logo {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-left: 10px;
            letter-spacing: 1px;
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 98;
            transition: opacity var(--transition-smooth);
        }

        .sidebar-overlay.active {
            display: block;
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 60px 40px;
        }

        .section-sm {
            padding: 40px 40px;
        }

        .section-lg {
            padding: 80px 40px;
        }

        .section-dark {
            background: var(--bg-deep);
            color: #fff;
        }

        .section-light {
            background: #F0F2F5;
        }

        .section-white {
            background: #fff;
        }

        .section-gold-light {
            background: #FDFAF3;
        }

        .container-inner {
            max-width: 1100px;
            margin: 0 auto;
        }

        .container-narrow {
            max-width: 860px;
            margin: 0 auto;
        }

        /* ========== SECTION LABELS & TITLES ========== */
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--gold);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .section-dark .section-title {
            color: #fff;
        }

        .section-subtitle {
            font-size: 17px;
            color: var(--text-light);
            line-height: 1.7;
            max-width: 700px;
        }

        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        .section-title-divider {
            width: 50px;
            height: 3px;
            background: var(--gold);
            border-radius: 2px;
            margin: 16px 0 24px;
        }

        /* ========== HERO ========== */
        .hero-category {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            background-position: center 35%;
            overflow: hidden;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 28, 35, 0.88) 0%, rgba(26, 28, 35, 0.72) 40%, rgba(26, 28, 35, 0.55) 100%);
            z-index: 1;
        }

        .hero-category .hero-inner {
            position: relative;
            z-index: 2;
            padding: 60px 40px;
            max-width: 1100px;
            margin: 0 auto;
            width: 100%;
        }

        .hero-category .hero-badge {
            display: inline-block;
            background: var(--gold);
            color: #1A1C23;
            font-size: 13px;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 20px;
            letter-spacing: 1.5px;
            margin-bottom: 18px;
        }

        .hero-category h1 {
            font-size: 44px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .hero-category h1 .gold-text {
            color: var(--gold);
        }

        .hero-category .hero-desc {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.7;
            max-width: 600px;
            margin-bottom: 28px;
        }

        .btn-gold {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--gold);
            color: #1A1C23;
            font-weight: 700;
            font-size: 16px;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            transition: all var(--transition-smooth);
            letter-spacing: 0.5px;
            border: 2px solid var(--gold);
            cursor: pointer;
        }

        .btn-gold:hover {
            background: var(--gold-dark);
            border-color: var(--gold-dark);
            color: #1A1C23;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 175, 55, 0.35);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            padding: 13px 26px;
            border-radius: var(--radius-md);
            transition: all var(--transition-smooth);
            letter-spacing: 0.5px;
            border: 2px solid rgba(255, 255, 255, 0.5);
            cursor: pointer;
        }

        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ========== MEMBER TIER CARDS ========== */
        .tier-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 40px;
        }

        .tier-card {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 36px 28px;
            text-align: center;
            border: 1px solid var(--border);
            transition: all var(--transition-smooth);
            position: relative;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .tier-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .tier-card.featured {
            border: 2px solid var(--gold);
            box-shadow: var(--shadow-md);
            position: relative;
            z-index: 2;
        }

        .tier-card.featured::before {
            content: '最受欢迎';
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--gold);
            color: #1A1C23;
            font-size: 12px;
            font-weight: 700;
            padding: 5px 16px;
            border-radius: 14px;
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .tier-card .tier-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            margin: 0 auto 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
        }

        .tier-card .tier-icon.silver {
            background: #E8ECF1;
            color: #7B8A9B;
        }

        .tier-card .tier-icon.gold-tier {
            background: #FDF3E0;
            color: #D4AF37;
        }

        .tier-card .tier-icon.diamond {
            background: #E8F0FE;
            color: #4A7FE0;
        }

        .tier-card .tier-name {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-main);
        }

        .tier-card .tier-price {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .tier-card .tier-price span {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-light);
        }

        .tier-card .tier-period {
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 20px;
        }

        .tier-card .tier-features {
            text-align: left;
            flex: 1;
            margin-bottom: 20px;
        }

        .tier-card .tier-features li {
            padding: 7px 0;
            font-size: 15px;
            color: var(--text-light);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.5;
            border-bottom: 1px solid var(--border-light);
        }

        .tier-card .tier-features li:last-child {
            border-bottom: none;
        }

        .tier-card .tier-features li i {
            color: var(--gold);
            font-size: 13px;
            margin-top: 3px;
            flex-shrink: 0;
        }

        .tier-card .btn-tier {
            display: block;
            width: 100%;
            padding: 12px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 15px;
            letter-spacing: 0.5px;
            transition: all var(--transition-smooth);
            cursor: pointer;
            text-align: center;
        }

        .btn-tier-silver {
            background: #E8ECF1;
            color: #4A5568;
            border: 2px solid #E8ECF1;
        }

        .btn-tier-silver:hover {
            background: #D1D8E0;
            border-color: #D1D8E0;
            color: #2D3748;
        }

        .btn-tier-gold {
            background: var(--gold);
            color: #1A1C23;
            border: 2px solid var(--gold);
        }

        .btn-tier-gold:hover {
            background: var(--gold-dark);
            border-color: var(--gold-dark);
            color: #1A1C23;
            box-shadow: 0 6px 20px rgba(212, 175, 55, 0.3);
        }

        .btn-tier-diamond {
            background: #4A7FE0;
            color: #fff;
            border: 2px solid #4A7FE0;
        }

        .btn-tier-diamond:hover {
            background: #3B6DC5;
            border-color: #3B6DC5;
            color: #fff;
            box-shadow: 0 6px 20px rgba(74, 127, 224, 0.3);
        }

        /* ========== BENEFIT DETAIL BLOCKS ========== */
        .benefit-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
            margin-bottom: 60px;
        }

        .benefit-block:last-child {
            margin-bottom: 0;
        }

        .benefit-block.reverse {
            direction: rtl;
        }

        .benefit-block.reverse .benefit-text {
            direction: ltr;
        }

        .benefit-block .benefit-image {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4/3;
            direction: ltr;
        }

        .benefit-block .benefit-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .benefit-block .benefit-text h3 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-main);
            letter-spacing: 0.5px;
        }

        .benefit-block .benefit-text p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.85;
            margin-bottom: 12px;
        }

        .benefit-block .benefit-text .benefit-list {
            margin-top: 8px;
        }

        .benefit-block .benefit-text .benefit-list li {
            padding: 6px 0;
            font-size: 15px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .benefit-block .benefit-text .benefit-list li i {
            color: var(--gold);
            font-size: 14px;
            flex-shrink: 0;
        }

        /* ========== STATS ROW ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 36px;
        }

        .stat-item {
            text-align: center;
            padding: 28px 16px;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
            border: 1px solid transparent;
        }

        .stat-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--gold);
            transform: translateY(-3px);
        }

        .stat-item .stat-number {
            font-size: 48px;
            font-weight: 800;
            color: var(--gold);
            line-height: 1.1;
            margin-bottom: 6px;
        }

        .stat-item .stat-label {
            font-size: 15px;
            color: var(--text-light);
            font-weight: 500;
        }

        /* ========== PROCESS STEPS ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 36px;
            position: relative;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .process-step .step-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: #fff;
            border: 2px solid var(--gold);
            color: var(--gold);
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            transition: all var(--transition-smooth);
            position: relative;
            z-index: 2;
        }

        .process-step:hover .step-circle {
            background: var(--gold);
            color: #fff;
            box-shadow: 0 6px 20px rgba(212, 175, 55, 0.35);
        }

        .process-step .step-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .process-step .step-desc {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.5;
        }

        .process-connector {
            position: absolute;
            top: 28px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--border);
            z-index: 0;
        }

        .process-connector::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            height: 100%;
            width: 100%;
            background: var(--gold);
            border-radius: 1px;
            opacity: 0.3;
        }

        /* ========== FAQ ========== */
        .faq-list {
            margin-top: 30px;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: #D4D4D4;
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            text-align: left;
            line-height: 1.5;
            transition: all var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--gold-dark);
        }

        .faq-question .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--bg-page);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-light);
            transition: all var(--transition-smooth);
            flex-shrink: 0;
        }

        .faq-item.active .faq-question .faq-icon {
            background: var(--gold);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--bg-deep);
            text-align: center;
            padding: 70px 40px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 60%;
            height: 200%;
            background: radial-gradient(ellipse, rgba(212, 175, 55, 0.08) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }

        .cta-section .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-section h2 {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .cta-section .btn-gold {
            font-size: 17px;
            padding: 16px 34px;
            border-radius: var(--radius-md);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, 0.7);
            padding: 30px 40px;
            flex-shrink: 0;
            margin-top: auto;
        }

        .footer-inner {
            max-width: 1100px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-left p {
            font-size: 13px;
            line-height: 1.7;
            margin: 0;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .footer-right a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-fast);
        }

        .footer-right a:hover {
            color: var(--gold);
        }

        .back-to-top {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 2px solid var(--gold);
            background: transparent;
            color: var(--gold);
            font-size: 15px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-smooth);
        }

        .back-to-top:hover {
            background: var(--gold);
            color: #1A1C23;
            box-shadow: 0 4px 16px rgba(212, 175, 55, 0.3);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
            }

            .sidebar.open {
                transform: translateX(0);
            }

            .main-content {
                margin-left: 0;
                width: 100%;
            }

            .mobile-topbar {
                display: flex;
            }

            .main-content {
                padding-top: 56px;
            }

            .section,
            .section-sm,
            .section-lg {
                padding: 40px 24px;
            }

            .hero-category {
                min-height: 340px;
            }

            .hero-category .hero-inner {
                padding: 40px 24px;
            }

            .hero-category h1 {
                font-size: 32px;
            }

            .hero-category .hero-desc {
                font-size: 16px;
            }

            .tier-cards-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .tier-card.featured {
                order: -1;
            }

            .benefit-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .benefit-block.reverse {
                direction: ltr;
            }

            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }

            .process-connector {
                display: none;
            }

            .section-title {
                font-size: 26px;
            }

            .cta-section h2 {
                font-size: 26px;
            }

            .footer-inner {
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }

            .footer-right {
                justify-content: center;
            }
        }

        @media (max-width: 640px) {
            .section,
            .section-sm,
            .section-lg {
                padding: 30px 16px;
            }

            .hero-category {
                min-height: 280px;
            }

            .hero-category .hero-inner {
                padding: 30px 16px;
            }

            .hero-category h1 {
                font-size: 26px;
            }

            .hero-category .hero-desc {
                font-size: 15px;
            }

            .hero-category .hero-badge {
                font-size: 11px;
                padding: 4px 12px;
            }

            .section-title {
                font-size: 22px;
            }

            .section-subtitle {
                font-size: 15px;
            }

            .tier-card {
                padding: 24px 18px;
            }

            .tier-card .tier-price {
                font-size: 28px;
            }

            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-item .stat-number {
                font-size: 36px;
            }

            .process-steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .benefit-block .benefit-text h3 {
                font-size: 20px;
            }

            .cta-section {
                padding: 40px 20px;
            }

            .cta-section h2 {
                font-size: 22px;
            }

            .cta-section p {
                font-size: 15px;
            }

            .btn-gold {
                font-size: 15px;
                padding: 12px 22px;
            }

            .btn-outline-light {
                font-size: 14px;
                padding: 10px 20px;
            }

            .site-footer {
                padding: 20px 16px;
            }

            .footer-right {
                gap: 12px;
                flex-wrap: wrap;
            }
        }

/* roulang page: category7 */
:root {
            --bg-deep: #1A1C23;
            --gold: #D4AF37;
            --gold-dark: #B8960F;
            --bg-page: #F8F9FA;
            --white: #FFFFFF;
            --text-main: #333333;
            --text-light: #6B7280;
            --text-weak: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F0F0F0;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.14);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --sidebar-w: 240px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Segoe UI", sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-page);
            min-height: 100vh;
            overflow-x: hidden;
            display: flex;
            margin: 0;
            padding: 0;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--gold);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input {
            font-family: inherit;
            outline: none;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        /* ========== SIDEBAR ========== */
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: var(--bg-deep);
            z-index: 100;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.18);
            transition: transform var(--transition-smooth);
        }

        .sidebar-logo {
            padding: 20px 24px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 8px;
            flex-shrink: 0;
        }

        .sidebar-logo a {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .sidebar-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--gold);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            font-weight: 900;
            flex-shrink: 0;
        }

        .sidebar-logo a:hover {
            color: #fff;
        }

        .sidebar-nav {
            flex: 1;
            padding: 12px 0;
            overflow-y: auto;
        }

        .sidebar-nav ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .sidebar-nav ul li {
            position: relative;
        }

        .sidebar-nav ul li a {
            display: flex;
            align-items: center;
            padding: 13px 24px;
            color: rgba(255, 255, 255, 0.78);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition-fast);
            position: relative;
            gap: 10px;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .sidebar-nav ul li a .nav-icon {
            width: 20px;
            text-align: center;
            font-size: 14px;
            flex-shrink: 0;
        }

        .sidebar-nav ul li a::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 0;
            background: var(--gold);
            border-radius: 0 3px 3px 0;
            transition: height var(--transition-fast);
        }

        .sidebar-nav ul li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
            padding-left: 28px;
        }

        .sidebar-nav ul li a:hover::before {
            height: 60%;
        }

        .sidebar-nav ul li.active a {
            color: #fff;
            background: rgba(212, 175, 55, 0.12);
            font-weight: 600;
        }

        .sidebar-nav ul li.active a::before {
            height: 70%;
            width: 4px;
        }

        .sidebar-footer-info {
            padding: 16px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            line-height: 1.6;
            flex-shrink: 0;
        }

        /* ========== MAIN CONTENT ========== */
        .main-content {
            margin-left: var(--sidebar-w);
            flex: 1;
            min-width: 0;
            width: calc(100% - var(--sidebar-w));
            min-height: 100vh;
        }

        /* ========== MOBILE TOPBAR ========== */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--bg-deep);
            z-index: 99;
            align-items: center;
            padding: 0 16px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }

        .mobile-topbar .hamburger {
            background: none;
            border: none;
            color: #fff;
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
            line-height: 1;
            flex-shrink: 0;
        }

        .mobile-topbar .topbar-logo {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-left: 10px;
            letter-spacing: 1px;
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 98;
            opacity: 0;
            transition: opacity var(--transition-smooth);
            pointer-events: none;
        }

        .sidebar-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 70px 40px;
        }

        .section-sm {
            padding: 50px 40px;
        }

        .section-lg {
            padding: 90px 40px;
        }

        .section-dark {
            background: var(--bg-deep);
            color: #fff;
        }

        .section-light {
            background: #F0F2F5;
        }

        .section-white {
            background: #fff;
        }

        .container-inner {
            max-width: 1100px;
            margin: 0 auto;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--gold);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            color: inherit;
        }

        .section-title.gold-accent {
            position: relative;
            padding-bottom: 16px;
        }

        .section-title.gold-accent::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background: var(--gold);
            border-radius: 2px;
        }

        .section-subtitle {
            font-size: 18px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 30px;
            max-width: 700px;
        }

        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ========== HERO ========== */
        .hero-category {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            background: var(--bg-deep);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
            padding: 60px 40px;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 28, 35, 0.88) 0%, rgba(26, 28, 35, 0.7) 50%, rgba(26, 28, 35, 0.82) 100%);
            z-index: 1;
        }

        .hero-category .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 1100px;
            margin: 0 auto;
            width: 100%;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .hero-category .hero-text h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .hero-category .hero-text .hero-gold-line {
            width: 60px;
            height: 3px;
            background: var(--gold);
            border-radius: 2px;
            margin-bottom: 20px;
        }

        .hero-category .hero-text .hero-desc {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 480px;
        }

        .hero-category .hero-reward {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(212, 175, 55, 0.18);
            border: 1px solid rgba(212, 175, 55, 0.35);
            border-radius: 20px;
            padding: 8px 16px;
            font-size: 14px;
            color: var(--gold);
            font-weight: 500;
            margin-bottom: 18px;
        }

        .hero-category .hero-reward i {
            font-size: 13px;
        }

        .hero-category .hero-progress-wrap {
            margin-bottom: 20px;
            max-width: 400px;
        }

        .hero-category .hero-progress-label {
            display: flex;
            justify-content: space-between;
            color: rgba(255, 255, 255, 0.75);
            font-size: 13px;
            margin-bottom: 6px;
        }

        .hero-category .hero-progress-bar {
            height: 8px;
            background: rgba(255, 255, 255, 0.18);
            border-radius: 10px;
            overflow: hidden;
        }

        .hero-category .hero-progress-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--gold), #E8C547);
            border-radius: 10px;
            width: 72%;
            transition: width 1.5s ease;
        }

        .hero-category .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-gold {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            background: var(--gold);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .btn-gold:hover {
            background: var(--gold-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(212, 175, 55, 0.35);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            border-radius: var(--radius-sm);
            border: 2px solid rgba(255, 255, 255, 0.5);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateY(-2px);
        }

        .hero-category .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-category .hero-rank-preview {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 30px;
            width: 100%;
            max-width: 380px;
            backdrop-filter: blur(6px);
        }

        .hero-category .rank-preview-title {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            font-weight: 600;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-category .rank-preview-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .hero-category .rank-preview-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.8);
            font-size: 14px;
        }

        .hero-category .rank-preview-list li:last-child {
            border-bottom: none;
        }

        .hero-category .rank-badge {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 13px;
            flex-shrink: 0;
        }

        .hero-category .rank-badge.top1 {
            background: var(--gold);
            color: #fff;
        }

        .hero-category .rank-badge.top2 {
            background: #C0C0C0;
            color: #333;
        }

        .hero-category .rank-badge.top3 {
            background: #CD7F32;
            color: #fff;
        }

        .hero-category .rank-badge.normal {
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
        }

        /* ========== CARDS ========== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .card-item {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
            cursor: pointer;
        }

        .card-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: var(--gold);
        }

        .card-item .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }

        .card-item .card-body {
            padding: 20px 22px 22px;
        }

        .card-item .card-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text-main);
        }

        .card-item .card-body p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 0;
        }

        .card-item .card-badge {
            display: inline-block;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 20px;
            background: rgba(212, 175, 55, 0.12);
            color: var(--gold-dark);
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        /* ========== RANKING LIST ========== */
        .ranking-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .ranking-list li {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 18px 24px;
            background: #fff;
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
        }

        .ranking-list li:hover {
            box-shadow: var(--shadow-md);
            border-color: #ddd;
            transform: translateX(4px);
        }

        .ranking-list .rank-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-weak);
            width: 44px;
            text-align: center;
            flex-shrink: 0;
        }

        .ranking-list li:nth-child(1) .rank-num {
            color: var(--gold);
        }

        .ranking-list li:nth-child(2) .rank-num {
            color: #C0C0C0;
        }

        .ranking-list li:nth-child(3) .rank-num {
            color: #CD7F32;
        }

        .ranking-list .rank-info {
            flex: 1;
            min-width: 0;
        }

        .ranking-list .rank-info h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-main);
        }

        .ranking-list .rank-info .rank-meta {
            font-size: 13px;
            color: var(--text-weak);
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .ranking-list .rank-heat {
            flex-shrink: 0;
            text-align: right;
        }

        .ranking-list .rank-heat .heat-value {
            font-size: 20px;
            font-weight: 700;
            color: var(--gold);
        }

        .ranking-list .rank-heat .heat-label {
            font-size: 12px;
            color: var(--text-weak);
        }

        .ranking-list .rank-img {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }

        /* ========== STATS WALL ========== */
        .stats-wall {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .stat-block {
            padding: 30px 20px;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
        }

        .stat-block:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .stat-block .stat-number {
            font-size: 56px;
            font-weight: 800;
            color: var(--gold);
            line-height: 1.1;
            margin-bottom: 8px;
        }

        .stat-block .stat-label {
            font-size: 15px;
            color: var(--text-light);
            font-weight: 500;
        }

        /* ========== TESTIMONIALS ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
            position: relative;
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-5px);
            border-color: #e0d5b0;
        }

        .testimonial-card .t-quote-icon {
            font-size: 28px;
            color: var(--gold);
            opacity: 0.5;
            margin-bottom: 12px;
        }

        .testimonial-card .t-text {
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-main);
            margin-bottom: 16px;
            font-style: italic;
        }

        .testimonial-card .t-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .testimonial-card .t-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #e0d5b0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #fff;
            font-size: 16px;
            flex-shrink: 0;
        }

        .testimonial-card .t-name {
            font-weight: 600;
            font-size: 14px;
            color: var(--text-main);
        }

        .testimonial-card .t-role {
            font-size: 12px;
            color: var(--text-weak);
        }

        /* ========== STEPS ========== */
        .steps-flow {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            position: relative;
        }

        .step-node {
            text-align: center;
            position: relative;
            padding: 30px 20px;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
        }

        .step-node:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .step-node .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--gold);
            color: #fff;
            font-weight: 700;
            font-size: 20px;
            margin-bottom: 14px;
        }

        .step-node h4 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .step-node p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ========== FAQ ACCORDION ========== */
        .faq-accordion {
            list-style: none;
            margin: 0;
            padding: 0;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-accordion .faq-item {
            margin-bottom: 10px;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: #fff;
            transition: all var(--transition-fast);
        }

        .faq-accordion .faq-question {
            width: 100%;
            padding: 18px 24px;
            background: #fff;
            border: none;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-main);
            transition: all var(--transition-fast);
            gap: 12px;
        }

        .faq-accordion .faq-question:hover {
            background: #fafafa;
            color: var(--gold-dark);
        }

        .faq-accordion .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #f0f0f0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: transform var(--transition-fast);
            color: var(--text-light);
        }

        .faq-accordion .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--gold);
            color: #fff;
        }

        .faq-accordion .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
        }

        .faq-accordion .faq-item.open .faq-answer {
            max-height: 600px;
        }

        .faq-accordion .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-light);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--bg-deep);
            text-align: center;
            padding: 70px 40px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(212, 175, 55, 0.08);
            pointer-events: none;
        }

        .cta-section .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 650px;
            margin: 0 auto;
        }

        .cta-section h2 {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .cta-section .btn-gold {
            font-size: 17px;
            padding: 15px 36px;
            letter-spacing: 0.5px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, 0.7);
            padding: 30px 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-inner {
            max-width: 1100px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-left p {
            margin: 0 0 4px;
            font-size: 13px;
            line-height: 1.6;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .footer-right a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-fast);
        }

        .footer-right a:hover {
            color: var(--gold);
        }

        .back-to-top {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 2px solid rgba(255, 255, 255, 0.35);
            background: transparent;
            color: rgba(255, 255, 255, 0.7);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
            font-size: 14px;
        }

        .back-to-top:hover {
            border-color: var(--gold);
            color: var(--gold);
            background: rgba(212, 175, 55, 0.1);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .app-sidebar {
                transform: translateX(-100%);
            }

            .app-sidebar.mobile-open {
                transform: translateX(0);
            }

            .sidebar-overlay.active {
                display: block;
            }

            .mobile-topbar {
                display: flex;
            }

            .main-content {
                margin-left: 0;
                width: 100%;
                padding-top: 56px;
            }

            .hero-category .hero-inner {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .hero-category .hero-text h1 {
                font-size: 36px;
            }

            .hero-category .hero-rank-preview {
                max-width: 100%;
            }

            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .stats-wall {
                grid-template-columns: repeat(2, 1fr);
            }

            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .steps-flow {
                grid-template-columns: repeat(2, 1fr);
            }

            .section {
                padding: 50px 24px;
            }

            .section-lg {
                padding: 60px 24px;
            }

            .section-sm {
                padding: 40px 24px;
            }

            .ranking-list li {
                flex-wrap: wrap;
                gap: 12px;
                padding: 16px 18px;
            }

            .ranking-list .rank-heat {
                text-align: left;
                width: 100%;
            }
        }

        @media (max-width: 640px) {
            .hero-category {
                min-height: auto;
                padding: 40px 20px;
            }

            .hero-category .hero-text h1 {
                font-size: 28px;
            }

            .hero-category .hero-desc {
                font-size: 15px;
            }

            .hero-category .hero-actions {
                flex-direction: column;
            }

            .hero-category .hero-actions .btn-gold,
            .hero-category .hero-actions .btn-outline-light {
                width: 100%;
                justify-content: center;
            }

            .card-grid {
                grid-template-columns: 1fr;
            }

            .stats-wall {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-block .stat-number {
                font-size: 40px;
            }

            .testimonial-grid {
                grid-template-columns: 1fr;
            }

            .steps-flow {
                grid-template-columns: 1fr;
            }

            .section {
                padding: 40px 16px;
            }

            .section-lg {
                padding: 50px 16px;
            }

            .section-sm {
                padding: 30px 16px;
            }

            .section-title {
                font-size: 26px;
            }

            .ranking-list li {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .ranking-list .rank-num {
                font-size: 22px;
            }

            .ranking-list .rank-img {
                width: 48px;
                height: 48px;
            }

            .ranking-list .rank-heat {
                text-align: left;
                width: 100%;
            }

            .footer-inner {
                flex-direction: column;
                text-align: center;
                gap: 12px;
            }

            .footer-right {
                flex-wrap: wrap;
                justify-content: center;
            }

            .cta-section h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .stats-wall {
                grid-template-columns: 1fr;
            }

            .hero-category .hero-rank-preview {
                padding: 18px;
            }

            .hero-category .rank-preview-list li {
                font-size: 13px;
                gap: 8px;
            }
        }

@keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* 卡片 badge 定位修正 */
        .card-item {
            position: relative;
        }
        .card-item .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: #fff;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
        }