/* roulang page: index */
:root {
            --sidebar-width: 250px;
            --topbar-height: 60px;
            --color-gold: #c9a44b;
            --color-gold-light: #dbb860;
            --color-bg-dark: #0b0f1a;
            --color-card: #111827;
            --color-border: #1e293b;
            --color-text: #e8ecf2;
            --color-text-muted: #8b96a8;
            --transition-smooth: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --shadow-nav: 3px 0 28px rgba(0, 0, 0, 0.55);
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.7;
            background-color: #0b0f1a;
            color: #e8ecf2;
            overflow-x: hidden;
            min-height: 100vh;
        }

        /* 左侧导航栏 - 桌面端 */
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: #080c16;
            z-index: 900;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-nav);
            border-right: 1px solid #1a2133;
            transition: transform var(--transition-smooth);
            overflow-y: auto;
            overflow-x: hidden;
        }

        .sidebar-logo {
            padding: 26px 24px 20px;
            border-bottom: 1px solid #1a2133;
            flex-shrink: 0;
        }

        .sidebar-logo a {
            font-size: 1.65rem;
            font-weight: 700;
            color: #ffffff;
            text-decoration: none;
            letter-spacing: 0.03em;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color var(--transition-smooth);
        }

        .sidebar-logo a:hover {
            color: var(--color-gold-light);
        }

        .sidebar-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, #c9a44b 0%, #e0c06e 50%, #b8922f 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            color: #0b0f1a;
            flex-shrink: 0;
        }

        .sidebar-nav {
            flex: 1;
            padding: 16px 14px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 11px;
            padding: 13px 16px;
            border-radius: 10px;
            color: #b0bcc8;
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            transition: all var(--transition-smooth);
            position: relative;
            white-space: nowrap;
        }

        .sidebar-nav a:hover {
            background: rgba(201, 164, 75, 0.08);
            color: #e8ecf2;
        }

        .sidebar-nav a.active {
            background: rgba(201, 164, 75, 0.14);
            color: #dbb860;
            font-weight: 600;
            box-shadow: inset 3px 0 0 #c9a44b;
        }

        .sidebar-nav a .nav-icon {
            width: 20px;
            text-align: center;
            flex-shrink: 0;
            font-size: 1rem;
        }

        .sidebar-cta {
            padding: 16px 14px 20px;
            border-top: 1px solid #1a2133;
            flex-shrink: 0;
        }

        .sidebar-cta .btn-sidebar {
            display: block;
            width: 100%;
            padding: 12px 16px;
            border-radius: 10px;
            background: linear-gradient(135deg, #c9a44b 0%, #dbb860 100%);
            color: #0b0f1a;
            font-weight: 700;
            font-size: 0.9rem;
            text-align: center;
            text-decoration: none;
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            cursor: pointer;
            border: none;
        }

        .sidebar-cta .btn-sidebar:hover {
            background: linear-gradient(135deg, #dbb860 0%, #e8c870 100%);
            box-shadow: 0 4px 20px rgba(201, 164, 75, 0.35);
            transform: translateY(-1px);
        }

        /* 主内容区 */
        .main-content {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            background: #0b0f1a;
        }

        /* 移动端顶部栏 */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--topbar-height);
            background: #080c16;
            z-index: 950;
            align-items: center;
            padding: 0 16px;
            border-bottom: 1px solid #1a2133;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.4);
        }

        .mobile-topbar .topbar-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 7px;
        }

        .mobile-topbar .topbar-logo .logo-icon-sm {
            width: 30px;
            height: 30px;
            background: linear-gradient(135deg, #c9a44b, #dbb860);
            border-radius: 7px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.95rem;
            color: #0b0f1a;
        }

        .hamburger-btn {
            margin-left: auto;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            display: flex;
            flex-direction: column;
            gap: 5px;
            z-index: 960;
            width: 38px;
            height: 32px;
            justify-content: center;
            align-items: center;
        }

        .hamburger-btn span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: #cbd5e1;
            border-radius: 2px;
            transition: all var(--transition-smooth);
        }

        .hamburger-btn.open span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .hamburger-btn.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger-btn.open span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* 移动端抽屉覆盖层 */
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 910;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-smooth);
        }
        .drawer-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }

        /* 移动端抽屉 */
        .mobile-drawer {
            position: fixed;
            top: 0;
            left: 0;
            width: 270px;
            height: 100vh;
            background: #080c16;
            z-index: 920;
            transform: translateX(-100%);
            transition: transform var(--transition-smooth);
            box-shadow: 3px 0 28px rgba(0, 0, 0, 0.6);
            display: flex;
            flex-direction: column;
            overflow-y: auto;
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }

        .mobile-drawer .drawer-logo {
            padding: 20px 18px;
            border-bottom: 1px solid #1a2133;
        }
        .mobile-drawer .drawer-nav {
            flex: 1;
            padding: 12px 10px;
            display: flex;
            flex-direction: column;
            gap: 3px;
        }
        .mobile-drawer .drawer-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 13px 16px;
            border-radius: 10px;
            color: #b0bcc8;
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition-smooth);
        }
        .mobile-drawer .drawer-nav a:hover,
        .mobile-drawer .drawer-nav a.active {
            background: rgba(201, 164, 75, 0.14);
            color: #dbb860;
            font-weight: 600;
        }
        .mobile-drawer .drawer-cta {
            padding: 14px 10px 18px;
            border-top: 1px solid #1a2133;
        }

        /* Hero区域 */
        .hero-section {
            position: relative;
            min-height: 580px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: #0b0f1a;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            z-index: 0;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6, 10, 18, 0.7) 0%, rgba(11, 15, 26, 0.85) 60%, #0b0f1a 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            padding: 60px 32px;
        }

        .hero-badge {
            display: inline-block;
            padding: 7px 18px;
            border-radius: 20px;
            background: rgba(201, 164, 75, 0.15);
            border: 1px solid rgba(201, 164, 75, 0.35);
            color: #dbb860;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 20px;
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.25;
            margin: 0 0 16px;
            letter-spacing: 0.02em;
        }
        .hero-title .gold-text {
            color: #dbb860;
        }

        .hero-desc {
            font-size: 1.1rem;
            color: #b0bcc8;
            line-height: 1.8;
            margin: 0 0 24px;
            max-width: 640px;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 10px;
            background: linear-gradient(135deg, #c9a44b 0%, #dbb860 100%);
            color: #0b0f1a;
            font-weight: 700;
            font-size: 1rem;
            text-decoration: none;
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, #dbb860 0%, #e8c870 100%);
            box-shadow: 0 6px 26px rgba(201, 164, 75, 0.4);
            transform: translateY(-2px);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 10px;
            background: transparent;
            color: #e8ecf2;
            font-weight: 600;
            font-size: 1rem;
            text-decoration: none;
            letter-spacing: 0.03em;
            border: 2px solid #3a4458;
            transition: all var(--transition-smooth);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-outline:hover {
            border-color: #c9a44b;
            color: #dbb860;
            background: rgba(201, 164, 75, 0.06);
        }

        /* 板块通用 */
        .section-block {
            padding: 70px 32px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: #c9a44b;
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: #ffffff;
            margin: 0 0 12px;
            letter-spacing: 0.02em;
        }
        .section-subtitle {
            font-size: 1rem;
            color: #8b96a8;
            margin: 0 0 38px;
            max-width: 600px;
            line-height: 1.7;
        }

        /* 统计卡片 */
        .stat-card {
            background: #111827;
            border: 1px solid #1e293b;
            border-radius: 14px;
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition-smooth);
        }
        .stat-card:hover {
            background: #161d2e;
            border-color: #293548;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
            transform: translateY(-3px);
        }
        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: #dbb860;
            letter-spacing: 0.02em;
        }
        .stat-label {
            font-size: 0.9rem;
            color: #8b96a8;
            margin-top: 6px;
        }

        /* 优势卡片 */
        .advantage-card {
            background: #111827;
            border: 1px solid #1e293b;
            border-radius: 14px;
            padding: 30px 24px;
            transition: all var(--transition-smooth);
            height: 100%;
        }
        .advantage-card:hover {
            background: #161d2e;
            border-color: #293548;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
            transform: translateY(-3px);
        }
        .advantage-icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            background: rgba(201, 164, 75, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #dbb860;
            margin-bottom: 16px;
        }
        .advantage-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #ffffff;
            margin: 0 0 8px;
        }
        .advantage-card p {
            font-size: 0.9rem;
            color: #8b96a8;
            margin: 0;
            line-height: 1.7;
        }

        /* 内容卡片 */
        .content-card {
            background: #111827;
            border: 1px solid #1e293b;
            border-radius: 14px;
            overflow: hidden;
            transition: all var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            background: #161d2e;
            border-color: #293548;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
            transform: translateY(-3px);
        }
        .content-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .content-card-body {
            padding: 18px 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .content-card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #ffffff;
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .content-card-body p {
            font-size: 0.85rem;
            color: #8b96a8;
            margin: 0 0 14px;
            line-height: 1.6;
            flex: 1;
        }
        .content-card-body .card-tag {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 14px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(201, 164, 75, 0.1);
            color: #c9a44b;
            align-self: flex-start;
        }

        /* FAQ */
        .faq-item {
            background: #111827;
            border: 1px solid #1e293b;
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .faq-item:hover {
            border-color: #293548;
        }
        .faq-question {
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            color: #e8ecf2;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            font-size: 0.95rem;
            transition: color var(--transition-smooth);
        }
        .faq-question:hover {
            color: #dbb860;
        }
        .faq-question .faq-arrow {
            font-size: 0.7rem;
            transition: transform var(--transition-smooth);
            color: #8b96a8;
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: #dbb860;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 22px;
            color: #8b96a8;
            font-size: 0.88rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 22px 18px;
        }

        /* 新闻列表 */
        .news-item {
            display: flex;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid #1e293b;
            transition: all var(--transition-smooth);
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-item:hover {
            padding-left: 8px;
        }
        .news-date {
            flex-shrink: 0;
            width: 70px;
            text-align: center;
            font-size: 0.8rem;
            color: #8b96a8;
            padding-top: 2px;
        }
        .news-date .day {
            display: block;
            font-size: 1.4rem;
            font-weight: 700;
            color: #dbb860;
            line-height: 1;
        }
        .news-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #e8ecf2;
            margin: 0 0 6px;
        }
        .news-info p {
            font-size: 0.82rem;
            color: #8b96a8;
            margin: 0 0 8px;
            line-height: 1.5;
        }
        .news-info .read-more {
            font-size: 0.8rem;
            color: #c9a44b;
            text-decoration: none;
            font-weight: 600;
            transition: color var(--transition-smooth);
        }
        .news-info .read-more:hover {
            color: #e8c870;
        }

        /* 合作伙伴 */
        .partner-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
            align-items: center;
        }
        .partner-item {
            background: #111827;
            border: 1px solid #1e293b;
            border-radius: 12px;
            padding: 18px 24px;
            text-align: center;
            color: #8b96a8;
            font-weight: 600;
            font-size: 0.9rem;
            min-width: 110px;
            transition: all var(--transition-smooth);
        }
        .partner-item:hover {
            border-color: #c9a44b;
            color: #dbb860;
            background: #161d2e;
        }

        /* 用户评价 */
        .testimonial-card {
            background: #111827;
            border: 1px solid #1e293b;
            border-radius: 14px;
            padding: 26px 22px;
            transition: all var(--transition-smooth);
            height: 100%;
        }
        .testimonial-card:hover {
            background: #161d2e;
            border-color: #293548;
        }
        .testimonial-stars {
            color: #dbb860;
            font-size: 0.9rem;
            margin-bottom: 10px;
            letter-spacing: 2px;
        }
        .testimonial-text {
            font-size: 0.9rem;
            color: #b0bcc8;
            line-height: 1.7;
            margin: 0 0 12px;
        }
        .testimonial-author {
            font-size: 0.82rem;
            color: #8b96a8;
            font-weight: 600;
        }

        /* CTA区块 */
        .cta-section {
            background: linear-gradient(180deg, #0d1220 0%, #111827 100%);
            border: 1px solid #1e293b;
            border-radius: 16px;
            padding: 50px 36px;
            text-align: center;
            margin: 0 32px 70px;
        }

        /* 页脚 */
        .site-footer {
            background: #080c16;
            border-top: 1px solid #1a2133;
            padding: 40px 32px 28px;
            color: #8b96a8;
            font-size: 0.85rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 28px;
        }
        .footer-col h4 {
            color: #e8ecf2;
            font-size: 0.95rem;
            margin: 0 0 12px;
            font-weight: 700;
        }
        .footer-col a {
            display: block;
            color: #8b96a8;
            text-decoration: none;
            padding: 3px 0;
            font-size: 0.82rem;
            transition: color var(--transition-smooth);
        }
        .footer-col a:hover {
            color: #dbb860;
        }
        .footer-bottom {
            border-top: 1px solid #1a2133;
            padding-top: 18px;
            text-align: center;
            font-size: 0.8rem;
            color: #64748b;
        }

        /* 响应式 */
        @media (max-width: 1023px) {
            .app-sidebar {
                transform: translateX(-100%);
            }
            .main-content {
                margin-left: 0;
                padding-top: var(--topbar-height);
            }
            .mobile-topbar {
                display: flex;
            }
            .hero-section {
                min-height: 420px;
            }
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-content {
                padding: 40px 20px;
            }
            .section-block {
                padding: 44px 18px;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .cta-section {
                margin: 0 16px 44px;
                padding: 34px 20px;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .content-card img {
                height: 160px;
            }
            .site-footer {
                padding: 30px 16px 20px;
            }
        }

        @media (max-width: 639px) {
            .hero-section {
                min-height: 360px;
            }
            .hero-title {
                font-size: 1.5rem;
            }
            .hero-desc {
                font-size: 0.85rem;
            }
            .hero-content {
                padding: 28px 14px;
            }
            .hero-buttons {
                flex-direction: column;
                gap: 10px;
            }
            .hero-buttons .btn-primary,
            .hero-buttons .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .section-block {
                padding: 32px 12px;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .section-subtitle {
                font-size: 0.85rem;
                margin-bottom: 24px;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .content-card img {
                height: 140px;
            }
            .cta-section {
                margin: 0 10px 30px;
                padding: 28px 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .news-item {
                flex-direction: column;
                gap: 6px;
            }
            .news-date {
                width: auto;
                text-align: left;
            }
        }

/* roulang page: category4 */
:root {
            --sidebar-width: 264px;
            --sidebar-bg: #0a0f1a;
            --sidebar-text: #c4c9d6;
            --sidebar-active: #d4a853;
            --sidebar-hover: #1f2a41;
            --accent: #d4a853;
            --accent-light: #f4bb40;
            --text-primary: #1a1a2e;
            --text-secondary: #4b5563;
            --text-muted: #6b7280;
            --surface: #f8f9fc;
            --card-bg: #ffffff;
            --border-color: #e2e8f0;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.10);
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
            line-height: 1.7;
            background-color: #f8f9fc;
            color: #1a1a2e;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ========== 侧边栏 ========== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background-color: var(--sidebar-bg);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            overflow-x: hidden;
            transition: transform var(--transition-slow);
            box-shadow: 4px 0 24px rgba(0, 0, 0, 0.18);
            border-right: 1px solid rgba(255, 255, 255, 0.06);
        }

        .sidebar-logo {
            padding: 1.75rem 1.5rem 1.25rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            gap: 0.65rem;
            flex-shrink: 0;
        }

        .sidebar-logo .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: linear-gradient(135deg, #d4a853 0%, #b8913a 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 700;
            color: #0a0f1a;
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(212, 168, 83, 0.3);
        }

        .sidebar-logo .logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.03em;
            white-space: nowrap;
        }

        .sidebar-nav {
            flex: 1;
            padding: 1rem 0.75rem;
            display: flex;
            flex-direction: column;
            gap: 0.2rem;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            padding: 0.7rem 0.9rem;
            border-radius: 0.65rem;
            color: var(--sidebar-text);
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
            letter-spacing: 0.02em;
        }

        .sidebar-nav a:hover {
            background-color: var(--sidebar-hover);
            color: #ffffff;
            transform: translateX(2px);
        }

        .sidebar-nav a.active {
            background-color: rgba(212, 168, 83, 0.13);
            color: var(--sidebar-active);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--sidebar-active);
            border-radius: 0.65rem 0.65rem 0.65rem 0.4rem;
        }

        .sidebar-nav a .nav-icon {
            font-size: 1.15rem;
            width: 26px;
            text-align: center;
            flex-shrink: 0;
        }

        .sidebar-footer-tag {
            padding: 1rem 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.72rem;
            color: #5a6275;
            text-align: center;
            flex-shrink: 0;
            letter-spacing: 0.04em;
        }

        /* ========== 主内容区 ========== */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
            transition: margin-left var(--transition-slow);
        }

        .main-content {
            flex: 1;
        }

        /* ========== 移动端顶部栏 ========== */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background-color: #0a0f1a;
            z-index: 999;
            align-items: center;
            padding: 0 1rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
        }

        .mobile-topbar .hamburger-btn {
            background: none;
            border: none;
            color: #ffffff;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.4rem;
            line-height: 1;
            flex-shrink: 0;
            -webkit-tap-highlight-color: transparent;
        }

        .mobile-topbar .mobile-logo {
            flex: 1;
            text-align: center;
            font-weight: 700;
            font-size: 1.05rem;
            color: #ffffff;
            letter-spacing: 0.03em;
        }

        /* 移动端遮罩 */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 998;
            transition: opacity var(--transition-slow);
        }

        .sidebar-overlay.active {
            display: block;
            opacity: 1;
        }

        /* ========== 板块通用 ========== */
        .section-block {
            padding: 3.5rem 2rem;
        }

        .section-block-sm {
            padding: 2.5rem 2rem;
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: #1a1a2e;
            margin-bottom: 0.5rem;
            letter-spacing: 0.02em;
        }

        .section-subtitle {
            font-size: 0.95rem;
            color: #6b7280;
            margin-bottom: 2rem;
            line-height: 1.6;
        }

        .section-header {
            text-align: center;
            margin-bottom: 2.5rem;
        }

        .section-header .section-title {
            margin-bottom: 0.4rem;
        }

        /* ========== 卡片 ========== */
        .game-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-base);
            border: 1px solid #eef0f5;
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .game-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: #d4d8e2;
        }

        .game-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background-color: #e8ecf3;
        }

        .game-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

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

        .game-card .card-badge {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            background: #d4a853;
            color: #0a0f1a;
            font-size: 0.72rem;
            font-weight: 700;
            padding: 0.3rem 0.7rem;
            border-radius: 20px;
            letter-spacing: 0.04em;
            z-index: 2;
        }

        .game-card .card-body {
            padding: 1.25rem 1.2rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .game-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #1a1a2e;
            margin: 0 0 0.4rem;
            letter-spacing: 0.02em;
        }

        .game-card .card-body p {
            font-size: 0.85rem;
            color: #6b7280;
            margin: 0 0 1rem;
            line-height: 1.6;
            flex: 1;
        }

        .game-card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.78rem;
            color: #9ca3af;
            margin-top: auto;
        }

        .game-card .card-body .card-meta .dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #22c55e;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.35;
            }
        }

        /* ========== 优势卡片 ========== */
        .advantage-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 1.75rem 1.5rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid #eef0f5;
            text-align: center;
            transition: all var(--transition-base);
            height: 100%;
        }

        .advantage-card:hover {
            box-shadow: var(--shadow-md);
            border-color: #d4d8e2;
            transform: translateY(-3px);
        }

        .advantage-card .adv-icon {
            font-size: 2.4rem;
            margin-bottom: 0.75rem;
            display: block;
        }

        .advantage-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #1a1a2e;
            margin: 0 0 0.5rem;
        }

        .advantage-card p {
            font-size: 0.85rem;
            color: #6b7280;
            margin: 0;
            line-height: 1.6;
        }

        /* ========== 统计卡片 ========== */
        .stat-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 1.5rem 1.25rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid #eef0f5;
            transition: all var(--transition-base);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .stat-card .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: #d4a853;
            letter-spacing: 0.02em;
            line-height: 1.1;
        }

        .stat-card .stat-label {
            font-size: 0.82rem;
            color: #6b7280;
            margin-top: 0.4rem;
            letter-spacing: 0.03em;
        }

        /* ========== FAQ ========== */
        .faq-item {
            background: #ffffff;
            border-radius: var(--radius-md);
            margin-bottom: 0.75rem;
            border: 1px solid #eef0f5;
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: #d4d8e2;
            box-shadow: var(--shadow-sm);
        }

        .faq-item summary {
            padding: 1.1rem 1.3rem;
            font-weight: 600;
            font-size: 0.95rem;
            color: #1a1a2e;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            user-select: none;
            letter-spacing: 0.015em;
            -webkit-tap-highlight-color: transparent;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '+';
            font-size: 1.3rem;
            font-weight: 400;
            color: #9ca3af;
            flex-shrink: 0;
            transition: transform var(--transition-fast);
            line-height: 1;
        }

        .faq-item[open] summary::after {
            content: '−';
            color: #d4a853;
            transform: rotate(180deg);
        }

        .faq-item .faq-answer {
            padding: 0 1.3rem 1.2rem;
            font-size: 0.85rem;
            color: #4b5563;
            line-height: 1.75;
        }

        /* ========== CTA区块 ========== */
        .cta-block {
            background: linear-gradient(135deg, #0f1a2e 0%, #1a2d4a 50%, #0f1a2e 100%);
            border-radius: var(--radius-xl);
            padding: 3rem 2rem;
            text-align: center;
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }

        .cta-block::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(212, 168, 83, 0.08);
            pointer-events: none;
        }

        .cta-block::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(212, 168, 83, 0.06);
            pointer-events: none;
        }

        .cta-block h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 0 0 0.6rem;
            position: relative;
            z-index: 1;
            letter-spacing: 0.02em;
        }

        .cta-block p {
            font-size: 0.95rem;
            color: #b0bdd0;
            margin: 0 0 1.75rem;
            position: relative;
            z-index: 1;
            line-height: 1.7;
        }

        .btn-cta-gold {
            display: inline-block;
            background: linear-gradient(135deg, #d4a853 0%, #c2943f 100%);
            color: #0a0f1a;
            font-weight: 700;
            font-size: 0.95rem;
            padding: 0.8rem 2.2rem;
            border-radius: 2.5rem;
            text-decoration: none;
            letter-spacing: 0.04em;
            transition: all var(--transition-base);
            position: relative;
            z-index: 1;
            box-shadow: 0 4px 18px rgba(212, 168, 83, 0.35);
            border: none;
            cursor: pointer;
        }

        .btn-cta-gold:hover {
            background: linear-gradient(135deg, #e0b85e 0%, #d4a853 100%);
            box-shadow: 0 6px 24px rgba(212, 168, 83, 0.5);
            transform: translateY(-2px);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background-color: #0a0f1a;
            color: #c4c9d6;
            padding: 2.5rem 2rem 1.5rem;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            max-width: 1100px;
            margin: 0 auto;
        }

        .footer-col h4 {
            color: #ffffff;
            font-size: 0.95rem;
            font-weight: 700;
            margin: 0 0 0.9rem;
            letter-spacing: 0.03em;
        }

        .footer-col a {
            display: block;
            color: #8b96a8;
            text-decoration: none;
            font-size: 0.82rem;
            padding: 0.25rem 0;
            transition: color var(--transition-fast);
            letter-spacing: 0.02em;
        }

        .footer-col a:hover {
            color: #d4a853;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 1.5rem;
            margin-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.75rem;
            color: #5a6275;
            letter-spacing: 0.03em;
            max-width: 1100px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== Banner区块 ========== */
        .page-banner {
            position: relative;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 5rem 2rem;
            display: flex;
            align-items: center;
            min-height: 380px;
            border-radius: 0;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 15, 26, 0.88) 0%, rgba(10, 15, 26, 0.65) 50%, rgba(10, 15, 26, 0.78) 100%);
            z-index: 1;
        }

        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
            color: #ffffff;
        }

        .page-banner .banner-content h1 {
            font-size: 2.4rem;
            font-weight: 800;
            margin: 0 0 0.8rem;
            letter-spacing: 0.03em;
            line-height: 1.25;
        }

        .page-banner .banner-content p {
            font-size: 1rem;
            color: #c4c9d6;
            line-height: 1.8;
            margin: 0 0 1.5rem;
        }

        .page-banner .banner-content .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
        }

        .page-banner .banner-content .banner-tags span {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #ffffff;
            font-size: 0.78rem;
            padding: 0.35rem 0.85rem;
            border-radius: 20px;
            letter-spacing: 0.03em;
            backdrop-filter: blur(4px);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
                box-shadow: none;
            }
            .sidebar.open {
                transform: translateX(0);
                box-shadow: 6px 0 30px rgba(0, 0, 0, 0.4);
            }
            .main-wrapper {
                margin-left: 0;
            }
            .mobile-topbar {
                display: flex;
            }
            .main-wrapper {
                padding-top: 56px;
            }
            .sidebar-overlay.active {
                display: block;
            }
            .page-banner {
                min-height: 300px;
                padding: 3.5rem 1.5rem;
            }
            .page-banner .banner-content h1 {
                font-size: 1.9rem;
            }
            .section-block {
                padding: 2.5rem 1.25rem;
            }
            .section-block-sm {
                padding: 2rem 1.25rem;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
            .section-title {
                font-size: 1.45rem;
            }
        }

        @media (max-width: 640px) {
            .page-banner {
                min-height: 260px;
                padding: 2.5rem 1rem;
            }
            .page-banner .banner-content h1 {
                font-size: 1.55rem;
            }
            .page-banner .banner-content p {
                font-size: 0.85rem;
            }
            .section-block {
                padding: 2rem 0.9rem;
            }
            .section-block-sm {
                padding: 1.5rem 0.9rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.2rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .cta-block {
                padding: 2rem 1.25rem;
                border-radius: var(--radius-lg);
            }
            .cta-block h3 {
                font-size: 1.3rem;
            }
            .game-card .card-body h3 {
                font-size: 1rem;
            }
            .stat-card .stat-number {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .page-banner .banner-content h1 {
                font-size: 1.35rem;
            }
            .page-banner {
                min-height: 220px;
                padding: 2rem 0.85rem;
            }
            .section-title {
                font-size: 1.2rem;
            }
            .btn-cta-gold {
                font-size: 0.85rem;
                padding: 0.65rem 1.6rem;
            }
            .sidebar {
                width: 260px;
            }
            :root {
                --sidebar-width: 260px;
            }
        }

/* roulang page: category2 */
:root {
            --sidebar-width: 260px;
            --header-mobile-height: 56px;
            --color-brand: #1a45f0;
            --color-brand-hover: #1435dc;
            --color-brand-light: #eef4ff;
            --color-text: #0f172a;
            --color-text-soft: #475569;
            --color-text-muted: #94a3b8;
            --color-bg: #f8fafc;
            --color-white: #ffffff;
            --color-border: #e2e8f0;
            --color-accent-gold: #f59e0b;
            --color-accent-teal: #14b8a6;
            --radius-lg: 1rem;
            --radius-md: 0.75rem;
            --radius-sm: 0.5rem;
            --shadow-card: 0 1px 3px 0 rgba(0, 0, 0, 0.06), 0 1px 2px -1px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.06);
            --shadow-sidebar: 2px 0 20px 0 rgba(0, 0, 0, 0.06);
            --transition-fast: 180ms ease;
            --transition-smooth: 280ms cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.6;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            min-height: 100vh;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input,
        button {
            outline: none;
        }

        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--color-brand);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ========== SIDEBAR ========== */
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--color-white);
            border-right: 1px solid var(--color-border);
            box-shadow: var(--shadow-sidebar);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            overflow-x: hidden;
            transition: transform var(--transition-smooth);
            padding: 0;
        }

        .sidebar-logo {
            padding: 1.5rem 1.5rem 1.25rem;
            border-bottom: 1px solid var(--color-border);
            flex-shrink: 0;
        }

        .sidebar-logo a {
            display: flex;
            align-items: center;
            gap: 0.625rem;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.01em;
            transition: color var(--transition-fast);
        }

        .sidebar-logo a:hover {
            color: var(--color-brand);
        }

        .sidebar-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-brand), #4f46e5);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            font-weight: 800;
            flex-shrink: 0;
        }

        .sidebar-nav {
            padding: 1rem 0.75rem;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 0.25rem;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            padding: 0.7rem 0.9rem;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-soft);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
            letter-spacing: 0.01em;
        }

        .sidebar-nav a .nav-icon {
            font-size: 1.15rem;
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }

        .sidebar-nav a:hover {
            background-color: var(--color-brand-light);
            color: var(--color-brand);
            transform: translateX(3px);
        }

        .sidebar-nav a:hover .nav-icon {
            transform: scale(1.12);
        }

        .sidebar-nav a.active {
            background: linear-gradient(135deg, var(--color-brand), #4f46e5);
            color: #ffffff;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(26, 69, 240, 0.25);
            transform: none;
        }

        .sidebar-nav a.active .nav-icon {
            transform: none;
            filter: brightness(1.1);
        }

        .sidebar-footer-tag {
            padding: 1rem 1.25rem;
            border-top: 1px solid var(--color-border);
            flex-shrink: 0;
            font-size: 0.75rem;
            color: var(--color-text-muted);
            text-align: center;
            letter-spacing: 0.02em;
        }

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

        /* ========== MOBILE HEADER ========== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-mobile-height);
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            z-index: 999;
            align-items: center;
            justify-content: space-between;
            padding: 0 1rem;
        }

        .mobile-header .mobile-logo {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-text);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .mobile-header .mobile-logo .logo-icon-sm {
            width: 30px;
            height: 30px;
            border-radius: 6px;
            background: linear-gradient(135deg, var(--color-brand), #4f46e5);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.85rem;
            font-weight: 800;
            flex-shrink: 0;
        }

        .hamburger-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            background: var(--color-white);
            color: var(--color-text-soft);
            font-size: 1.25rem;
            transition: all var(--transition-fast);
        }

        .hamburger-btn:hover {
            background: var(--color-brand-light);
            border-color: var(--color-brand);
            color: var(--color-brand);
        }

        .hamburger-btn:active {
            transform: scale(0.94);
        }

        /* ========== OVERLAY ========== */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.55);
            z-index: 998;
            opacity: 0;
            transition: opacity var(--transition-smooth);
            pointer-events: none;
        }

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

        /* ========== PAGE BANNER / HERO ========== */
        .page-hero {
            position: relative;
            padding: 4rem 2rem;
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            color: #ffffff;
            display: flex;
            align-items: center;
            min-height: 380px;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, rgba(15, 23, 42, 0.82) 0%, rgba(15, 23, 42, 0.55) 50%, rgba(26, 69, 240, 0.4) 100%);
            z-index: 1;
        }

        .page-hero .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 800px;
            width: 100%;
            margin: 0 auto;
            text-align: center;
        }

        .page-hero .hero-badge {
            display: inline-block;
            padding: 0.35rem 1rem;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            background: rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.3);
            margin-bottom: 1.25rem;
            color: #ffffff;
        }

        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin: 0 0 1rem;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
            line-height: 1.2;
        }

        .page-hero .hero-desc {
            font-size: 1.1rem;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.9);
            margin: 0 0 1.5rem;
            max-width: 620px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== SECTION ========== */
        .section-block {
            padding: 3.5rem 2rem;
        }

        .section-block .section-container {
            max-width: 1120px;
            margin: 0 auto;
            width: 100%;
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.01em;
            margin-bottom: 0.5rem;
            text-align: center;
        }

        .section-subtitle {
            font-size: 0.95rem;
            color: var(--color-text-soft);
            text-align: center;
            margin-bottom: 2.5rem;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }

        /* ========== CARDS ========== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 1.5rem;
        }

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

        .info-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: #cbd5e1;
        }

        .info-card .card-img-wrap {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #f1f5f9;
        }

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

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

        .info-card .card-body {
            padding: 1.25rem 1.25rem 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .info-card .card-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            padding: 0.2rem 0.65rem;
            border-radius: 999px;
            background: var(--color-brand-light);
            color: var(--color-brand);
            margin-bottom: 0.6rem;
            align-self: flex-start;
        }

        .info-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0 0 0.4rem;
            color: var(--color-text);
            letter-spacing: -0.01em;
        }

        .info-card p {
            font-size: 0.875rem;
            color: var(--color-text-soft);
            line-height: 1.6;
            margin: 0;
            flex: 1;
        }

        /* ========== STAT NUMBERS ========== */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .stat-item {
            text-align: center;
            padding: 1.75rem 1rem;
            background: var(--color-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }

        .stat-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .stat-item .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-brand);
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 0.35rem;
        }

        .stat-item .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-soft);
            font-weight: 500;
        }

        /* ========== EVENT LIST ========== */
        .event-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .event-row {
            display: flex;
            align-items: center;
            gap: 1rem;
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            padding: 1rem 1.25rem;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-card);
        }

        .event-row:hover {
            border-color: #cbd5e1;
            box-shadow: var(--shadow-card-hover);
            transform: translateX(2px);
        }

        .event-row .event-date {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-brand);
            background: var(--color-brand-light);
            padding: 0.35rem 0.75rem;
            border-radius: 999px;
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.02em;
        }

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

        .event-row .event-name {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-text);
            margin-bottom: 0.15rem;
        }

        .event-row .event-meta {
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }

        .event-row .event-badge {
            font-size: 0.72rem;
            font-weight: 600;
            padding: 0.25rem 0.7rem;
            border-radius: 999px;
            flex-shrink: 0;
            letter-spacing: 0.03em;
        }

        .event-badge.hot {
            background: #fef2f2;
            color: #dc2626;
        }

        .event-badge.upcoming {
            background: #fffbeb;
            color: #d97706;
        }

        .event-badge.live {
            background: #ecfdf5;
            color: #059669;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.55;
            }
        }

        /* ========== ADVANTAGE CARDS ========== */
        .adv-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 1.5rem;
        }

        .adv-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            padding: 2rem 1.5rem;
            text-align: center;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
        }

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

        .adv-card .adv-icon {
            font-size: 2.6rem;
            margin-bottom: 0.75rem;
            display: block;
        }

        .adv-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 0.5rem;
        }

        .adv-card p {
            font-size: 0.85rem;
            color: var(--color-text-soft);
            line-height: 1.6;
            margin: 0;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item summary {
            padding: 1.1rem 1.25rem;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-text);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.75rem;
            user-select: none;
            transition: background var(--transition-fast);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '+';
            font-size: 1.3rem;
            font-weight: 400;
            color: var(--color-text-muted);
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }

        .faq-item[open] summary::after {
            content: '−';
            transform: rotate(180deg);
            color: var(--color-brand);
        }

        .faq-item summary:hover {
            background: #f8fafc;
        }

        .faq-item .faq-answer {
            padding: 0 1.25rem 1.1rem;
            font-size: 0.875rem;
            color: var(--color-text-soft);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-block {
            background: linear-gradient(150deg, #0f172a 0%, #1e293b 40%, #1a2a5e 100%);
            border-radius: var(--radius-lg);
            padding: 3rem 2rem;
            text-align: center;
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }

        .cta-block::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
        }

        .cta-block::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
        }

        .cta-block h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 0 0 0.75rem;
            position: relative;
            z-index: 1;
            letter-spacing: -0.01em;
        }

        .cta-block p {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.8);
            margin: 0 0 1.5rem;
            position: relative;
            z-index: 1;
            line-height: 1.6;
        }

        .btn-cta {
            display: inline-block;
            padding: 0.75rem 2rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            background: #ffffff;
            color: var(--color-brand);
            border: none;
            transition: all var(--transition-fast);
            position: relative;
            z-index: 1;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
        }

        .btn-cta:hover {
            background: #eef4ff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }

        .btn-cta:active {
            transform: scale(0.96);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0f172a;
            color: #e2e8f0;
            padding: 3rem 2rem 1.5rem;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            max-width: 1120px;
            margin: 0 auto 2rem;
        }

        .footer-col h4 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 1rem;
            letter-spacing: 0.01em;
        }

        .footer-col a {
            display: block;
            color: #94a3b8;
            font-size: 0.85rem;
            padding: 0.3rem 0;
            transition: color var(--transition-fast);
            text-decoration: none;
        }

        .footer-col a:hover {
            color: #ffffff;
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 1.25rem;
            text-align: center;
            font-size: 0.78rem;
            color: #64748b;
            max-width: 1120px;
            margin: 0 auto;
            letter-spacing: 0.01em;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            :root {
                --sidebar-width: 240px;
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .page-hero {
                min-height: 300px;
                padding: 3rem 1.5rem;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .section-block {
                padding: 2.5rem 1.5rem;
            }
            .card-grid {
                grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
                gap: 1rem;
            }
            .adv-grid {
                grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
                gap: 1rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --sidebar-width: 260px;
            }
            .app-sidebar {
                transform: translateX(-100%);
                box-shadow: var(--shadow-drawer, 4px 0 32px rgba(0, 0, 0, 0.18));
                width: var(--sidebar-width);
                z-index: 1001;
            }
            .app-sidebar.open {
                transform: translateX(0);
            }
            .main-content {
                margin-left: 0;
                padding-top: var(--header-mobile-height);
            }
            .mobile-header {
                display: flex;
            }
            .sidebar-overlay {
                display: block;
            }
            .page-hero {
                min-height: 260px;
                padding: 2.5rem 1.25rem;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero .hero-desc {
                font-size: 0.9rem;
            }
            .section-block {
                padding: 2rem 1rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .card-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }
            .stat-item .stat-num {
                font-size: 1.8rem;
            }
            .adv-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }
            .event-row {
                flex-wrap: wrap;
                gap: 0.5rem;
                padding: 0.85rem 1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .cta-block {
                padding: 2rem 1.25rem;
            }
            .cta-block h3 {
                font-size: 1.3rem;
            }
        }

        @media (max-width: 520px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.6rem;
            }
            .stat-item {
                padding: 1.25rem 0.75rem;
            }
            .stat-item .stat-num {
                font-size: 1.5rem;
            }
            .adv-grid {
                grid-template-columns: 1fr;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .page-hero {
                min-height: 220px;
                padding: 2rem 1rem;
            }
            .section-block {
                padding: 1.75rem 0.85rem;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }
            .event-row {
                flex-direction: column;
                align-items: flex-start;
            }
            .event-row .event-date {
                align-self: flex-start;
            }
        }

        @media (max-width: 380px) {
            .page-hero h1 {
                font-size: 1.3rem;
            }
            .page-hero .hero-desc {
                font-size: 0.8rem;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.5rem;
            }
            .stat-item .stat-num {
                font-size: 1.3rem;
            }
            .stat-item .stat-label {
                font-size: 0.72rem;
            }
        }

/* roulang page: category3 */
:root {
            --sidebar-width: 260px;
            --sidebar-collapsed: -280px;
            --topbar-height: 56px;
            --gold: #d4a745;
            --gold-light: #e8c56d;
            --brand-red: #dc2626;
            --brand-dark: #0a0e1a;
            --brand-navy: #111827;
            --text-primary: #1a1a2e;
            --text-muted: #6b7280;
            --bg-surface: #f3f4f6;
            --card-bg: #ffffff;
            --border-color: #e5e7eb;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
            --radius-card: 14px;
            --radius-btn: 10px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-surface);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input,
        button {
            outline: none;
            border: none;
        }

        .app-layout {
            display: flex;
            min-height: 100vh;
            position: relative;
        }

        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: #0d1117;
            z-index: 1000;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sidebar, 2px 0 20px rgba(0, 0, 0, 0.15));
            overflow-y: auto;
            overflow-x: hidden;
            transition: transform var(--transition-smooth);
            border-right: 1px solid rgba(255, 255, 255, 0.06);
        }

        .sidebar-logo {
            padding: 22px 24px 18px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            flex-shrink: 0;
        }

        .sidebar-logo a {
            font-size: 1.55rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sidebar-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, #d4a745 0%, #e8c56d 50%, #c9973a 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #0d1117;
            font-weight: 900;
            flex-shrink: 0;
        }

        .sidebar-nav {
            flex: 1;
            padding: 16px 14px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 13px 16px;
            border-radius: 10px;
            color: #b0b8c4;
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .sidebar-nav a .nav-icon {
            font-size: 1.1rem;
            width: 24px;
            text-align: center;
            flex-shrink: 0;
        }

        .sidebar-nav a:hover {
            background: #1a2233;
            color: #e0e5ec;
        }

        .sidebar-nav a.active {
            background: #1c2538;
            color: #ffffff;
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--gold);
        }

        .sidebar-nav a.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 28px;
            background: var(--gold);
            border-radius: 0 3px 3px 0;
        }

        .sidebar-footer-tag {
            padding: 16px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            flex-shrink: 0;
            font-size: 0.72rem;
            color: #5a6370;
            text-align: center;
            letter-spacing: 0.4px;
        }

        .main-content {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            transition: margin-left var(--transition-smooth);
        }

        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--topbar-height);
            background: #0d1117;
            z-index: 999;
            align-items: center;
            padding: 0 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .mobile-topbar .hamburger {
            background: none;
            color: #ffffff;
            font-size: 1.5rem;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition-fast);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
        }

        .mobile-topbar .hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .mobile-topbar .mobile-logo {
            font-size: 1.1rem;
            font-weight: 700;
            color: #ffffff;
            margin-left: 8px;
            letter-spacing: 0.5px;
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 998;
            opacity: 0;
            transition: opacity var(--transition-smooth);
            pointer-events: none;
        }

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

        .section-spacing {
            padding: 64px 0;
        }

        .section-spacing-sm {
            padding: 48px 0;
        }

        .container-main {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 28px;
        }

        .page-banner {
            position: relative;
            background: linear-gradient(135deg, #1a1f2e 0%, #0d1117 40%, #1a1a2e 100%);
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 80px 0 72px;
            overflow: hidden;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 14, 26, 0.55);
            z-index: 1;
        }

        .page-banner .banner-inner {
            position: relative;
            z-index: 2;
        }

        .page-banner .banner-badge {
            display: inline-block;
            background: rgba(212, 167, 69, 0.18);
            color: #e8c56d;
            padding: 7px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            border: 1px solid rgba(212, 167, 69, 0.3);
            margin-bottom: 18px;
        }

        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #ffffff;
            margin: 0 0 16px;
            letter-spacing: 0.8px;
            line-height: 1.2;
        }

        .page-banner p {
            font-size: 1.1rem;
            color: #c5cdd8;
            max-width: 620px;
            line-height: 1.8;
            margin: 0;
        }

        .card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            transition: all var(--transition-smooth);
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: #d4d8df;
        }

        .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: #eef0f4;
        }

        .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .card:hover .card-img-wrap img {
            transform: scale(1.04);
        }

        .card-body {
            padding: 20px 22px 22px;
        }

        .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 14px;
            letter-spacing: 0.4px;
            margin-bottom: 10px;
        }

        .tag-hot {
            background: #fef2f2;
            color: #dc2626;
            border: 1px solid #fecaca;
        }

        .tag-new {
            background: #f0fdf4;
            color: #16a34a;
            border: 1px solid #bbf7d0;
        }

        .tag-gold {
            background: #fefce8;
            color: #b8860b;
            border: 1px solid #fde68a;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            background: linear-gradient(135deg, #d4a745 0%, #c9973a 100%);
            color: #0d1117;
            font-weight: 700;
            font-size: 0.95rem;
            border-radius: var(--radius-btn);
            transition: all var(--transition-fast);
            letter-spacing: 0.4px;
            box-shadow: 0 4px 14px rgba(212, 167, 69, 0.3);
            cursor: pointer;
            border: none;
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, #e0b855 0%, #d4a745 100%);
            box-shadow: 0 6px 22px rgba(212, 167, 69, 0.45);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(212, 167, 69, 0.3);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            background: transparent;
            color: #1a1a2e;
            font-weight: 600;
            font-size: 0.93rem;
            border-radius: var(--radius-btn);
            border: 2px solid #d4d8df;
            transition: all var(--transition-fast);
            letter-spacing: 0.3px;
            cursor: pointer;
        }

        .btn-outline:hover {
            border-color: #d4a745;
            color: #b8860b;
            background: #fefce8;
        }

        .data-stat-card {
            text-align: center;
            padding: 28px 20px;
            background: #ffffff;
            border-radius: var(--radius-card);
            border: 1px solid #e5e7eb;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
            transition: all var(--transition-smooth);
        }

        .data-stat-card:hover {
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
            transform: translateY(-2px);
        }

        .data-stat-card .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: #d4a745;
            letter-spacing: 0.5px;
            line-height: 1;
        }

        .data-stat-card .stat-label {
            font-size: 0.9rem;
            color: #6b7280;
            margin-top: 8px;
            letter-spacing: 0.3px;
        }

        .faq-item {
            border: 1px solid #e5e7eb;
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
            background: #ffffff;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: #d4d8df;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }

        .faq-question {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: #1a1a2e;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            letter-spacing: 0.3px;
            user-select: none;
        }

        .faq-question .faq-arrow {
            transition: transform var(--transition-smooth);
            color: #9ca3af;
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: #d4a745;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 22px;
            color: #4b5563;
            font-size: 0.93rem;
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 22px 20px;
        }

        .step-card {
            position: relative;
            padding: 28px 22px;
            background: #ffffff;
            border-radius: var(--radius-card);
            border: 1px solid #e5e7eb;
            text-align: center;
            transition: all var(--transition-smooth);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }

        .step-card:hover {
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
            transform: translateY(-3px);
        }

        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, #d4a745, #c9973a);
            color: #ffffff;
            font-weight: 800;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            box-shadow: 0 4px 12px rgba(212, 167, 69, 0.3);
        }

        .site-footer {
            background: #0d1117;
            color: #c5cdd8;
            padding: 48px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: auto;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 32px;
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 28px;
        }

        .site-footer .footer-col h4 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 14px;
            letter-spacing: 0.4px;
        }

        .site-footer .footer-col a {
            display: block;
            color: #8b96a8;
            font-size: 0.85rem;
            padding: 4px 0;
            transition: color var(--transition-fast);
            letter-spacing: 0.3px;
        }

        .site-footer .footer-col a:hover {
            color: #d4a745;
        }

        .site-footer .footer-bottom {
            max-width: 1100px;
            margin: 28px auto 0;
            padding: 18px 28px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            font-size: 0.78rem;
            color: #5a6370;
            letter-spacing: 0.4px;
        }

        @media (max-width: 1023px) {
            .sidebar {
                transform: translateX(var(--sidebar-collapsed));
                box-shadow: none;
            }
            .sidebar.open {
                transform: translateX(0);
                box-shadow: 4px 0 30px rgba(0, 0, 0, 0.5);
            }
            .sidebar-overlay {
                display: block;
            }
            .main-content {
                margin-left: 0;
            }
            .mobile-topbar {
                display: flex;
            }
            .main-content {
                padding-top: var(--topbar-height);
            }
            .page-banner {
                padding: 48px 0 44px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner p {
                font-size: 0.95rem;
            }
            .section-spacing {
                padding: 40px 0;
            }
            .section-spacing-sm {
                padding: 32px 0;
            }
            .container-main {
                padding: 0 18px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 640px) {
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .page-banner p {
                font-size: 0.88rem;
                line-height: 1.6;
            }
            .page-banner {
                padding: 36px 0 32px;
            }
            .section-spacing {
                padding: 32px 0;
            }
            .section-spacing-sm {
                padding: 24px 0;
            }
            .container-main {
                padding: 0 14px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .card-body {
                padding: 16px 16px 18px;
            }
            .data-stat-card .stat-number {
                font-size: 1.8rem;
            }
            .btn-primary,
            .btn-outline {
                padding: 11px 20px;
                font-size: 0.88rem;
            }
            .site-footer {
                padding: 32px 0 16px;
            }
        }

        @media (min-width: 1024px) {
            .sidebar-overlay {
                display: none !important;
            }
            .sidebar {
                transform: translateX(0) !important;
            }
        }

/* roulang page: category1 */
:root {
            --sidebar-width: 264px;
            --header-mobile-height: 60px;
            --color-brand: #d4a853;
            --color-brand-hover: #c4973a;
            --color-dark-bg: #0f1a2e;
            --color-dark-surface: #16223a;
            --color-dark-border: #1f2d45;
            --color-text-body: #1e293b;
            --color-text-muted: #64748b;
            --color-text-light: #94a3b8;
            --color-bg-page: #f6f8fb;
            --color-card-bg: #ffffff;
            --color-border: #e5e9f0;
            --color-accent-red: #e85d5d;
            --color-accent-green: #3cb878;
            --color-accent-blue: #4a90d9;
            --transition-smooth: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

        *,
        *::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: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.7;
            color: var(--color-text-body);
            background-color: var(--color-bg-page);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            font-size: inherit;
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        /* ============ SIDEBAR ============ */
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--sidebar-width);
            background: var(--color-dark-bg);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sidebar);
            overflow-y: auto;
            overflow-x: hidden;
            transition: transform var(--transition-smooth);
        }

        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 22px 20px 18px;
            border-bottom: 1px solid var(--color-dark-border);
            flex-shrink: 0;
        }

        .sidebar-logo .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, #d4a853 0%, #e8c97a 50%, #b88a3a 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            font-weight: 700;
            color: #0f1a2e;
            flex-shrink: 0;
            box-shadow: 0 3px 12px rgba(212, 168, 83, 0.35);
        }

        .sidebar-logo .logo-text {
            font-size: 1.15rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            padding: 12px 10px;
            gap: 2px;
            flex: 1;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 14px;
            border-radius: 10px;
            font-size: 0.9rem;
            font-weight: 500;
            color: #b0bec5;
            transition: all var(--transition-smooth);
            position: relative;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .sidebar-nav a:hover {
            background: var(--color-dark-surface);
            color: #e0e8f0;
        }

        .sidebar-nav a.active {
            background: rgba(212, 168, 83, 0.12);
            color: #d4a853;
            font-weight: 600;
            box-shadow: inset 3px 0 0 #d4a853;
            border-radius: 10px 10px 10px 10px;
        }

        .sidebar-nav a .nav-icon {
            font-size: 1.15rem;
            width: 28px;
            text-align: center;
            flex-shrink: 0;
        }

        .sidebar-nav a.active .nav-icon {
            transform: scale(1.08);
            transition: transform var(--transition-bounce);
        }

        .sidebar-badge {
            margin-left: auto;
            font-size: 0.7rem;
            background: #e85d5d;
            color: #fff;
            padding: 2px 8px;
            border-radius: 20px;
            font-weight: 600;
            letter-spacing: 0.03em;
            line-height: 1.4;
        }

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

        /* ============ MOBILE HEADER ============ */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-mobile-height);
            background: var(--color-dark-bg);
            z-index: 999;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
        }

        .mobile-header .mobile-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.05rem;
            color: #fff;
        }

        .mobile-header .mobile-logo .logo-icon-sm {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, #d4a853 0%, #e8c97a 50%, #b88a3a 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            font-weight: 700;
            color: #0f1a2e;
        }

        .hamburger-btn {
            display: flex;
            flex-direction: column;
            gap: 5px;
            width: 32px;
            height: 26px;
            justify-content: center;
            align-items: flex-end;
            background: none;
            border: none;
            cursor: pointer;
            z-index: 1001;
            padding: 4px;
        }

        .hamburger-btn span {
            display: block;
            height: 2.5px;
            background: #d4a853;
            border-radius: 2px;
            transition: all var(--transition-smooth);
            width: 26px;
        }

        .hamburger-btn span:nth-child(2) {
            width: 20px;
        }
        .hamburger-btn span:nth-child(3) {
            width: 14px;
        }

        .hamburger-btn.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
            width: 26px;
        }
        .hamburger-btn.open span:nth-child(2) {
            opacity: 0;
            width: 0;
        }
        .hamburger-btn.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
            width: 26px;
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 998;
            transition: opacity var(--transition-smooth);
        }
        .sidebar-overlay.show {
            display: block;
            opacity: 1;
        }

        /* ============ PAGE HERO / BANNER ============ */
        .page-hero {
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            position: relative;
            padding: 56px 40px 52px;
            border-radius: 0 0 24px 24px;
            margin-bottom: 0;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 46, 0.88) 0%, rgba(15, 26, 46, 0.65) 60%, rgba(15, 26, 46, 0.4) 100%);
            z-index: 1;
        }
        .page-hero .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 900px;
        }

        /* ============ SECTION STYLES ============ */
        .section-block {
            padding: 40px 32px;
        }
        .section-title {
            font-size: 1.55rem;
            font-weight: 700;
            color: #1e293b;
            margin-bottom: 6px;
            letter-spacing: 0.01em;
        }
        .section-subtitle {
            font-size: 0.9rem;
            color: #64748b;
            margin-bottom: 28px;
        }

        /* ============ CARDS ============ */
        .content-card {
            background: #fff;
            border-radius: 14px;
            box-shadow: 0 2px 16px rgba(15, 26, 46, 0.05), 0 1px 4px rgba(15, 26, 46, 0.03);
            border: 1px solid #eef1f6;
            transition: all var(--transition-smooth);
            overflow: hidden;
        }
        .content-card:hover {
            box-shadow: 0 8px 30px rgba(15, 26, 46, 0.1), 0 3px 8px rgba(15, 26, 46, 0.05);
            transform: translateY(-2px);
            border-color: #dde2ec;
        }

        /* ============ BUTTONS ============ */
        .btn-brand {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, #d4a853 0%, #c4973a 100%);
            color: #0f1a2e;
            font-weight: 600;
            padding: 10px 20px;
            border-radius: 10px;
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-smooth);
            box-shadow: 0 3px 14px rgba(212, 168, 83, 0.3);
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }
        .btn-brand:hover {
            box-shadow: 0 6px 22px rgba(212, 168, 83, 0.45);
            transform: translateY(-1px);
            color: #0f1a2e;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            color: #d4a853;
            font-weight: 600;
            padding: 10px 20px;
            border-radius: 10px;
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            border: 1.5px solid #d4a853;
            transition: all var(--transition-smooth);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-outline:hover {
            background: rgba(212, 168, 83, 0.08);
            border-color: #c4973a;
            color: #c4973a;
        }

        /* ============ TAG / BADGE ============ */
        .tag-live {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: #fef2f2;
            color: #e85d5d;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 20px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .tag-live::before {
            content: '';
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #e85d5d;
            animation: pulse-dot 1.4s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(1.5);
            }
        }
        .tag-upcoming {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: #eff6ff;
            color: #4a90d9;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 20px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .tag-completed {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: #f0fdf4;
            color: #3cb878;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 20px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        /* ============ STAT CARDS ============ */
        .stat-card {
            background: #fff;
            border-radius: 14px;
            padding: 20px 22px;
            border: 1px solid #eef1f6;
            box-shadow: 0 2px 12px rgba(15, 26, 46, 0.04);
            text-align: center;
            transition: all var(--transition-smooth);
        }
        .stat-card:hover {
            box-shadow: 0 6px 22px rgba(15, 26, 46, 0.08);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 2rem;
            font-weight: 700;
            color: #d4a853;
            letter-spacing: -0.02em;
            line-height: 1.1;
        }
        .stat-label {
            font-size: 0.82rem;
            color: #64748b;
            margin-top: 4px;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: #0f1a2e;
            color: #c8d6e5;
            padding: 40px 32px 24px;
            border-radius: 20px 20px 0 0;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.3fr;
            gap: 28px;
            max-width: 1100px;
            margin: 0 auto;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            color: #8b96a8;
            font-size: 0.82rem;
            padding: 3px 0;
            transition: color var(--transition-smooth);
            line-height: 1.8;
        }
        .footer-col a:hover {
            color: #d4a853;
        }
        .footer-bottom {
            border-top: 1px solid #1f2d45;
            margin-top: 28px;
            padding-top: 18px;
            text-align: center;
            color: #6b7790;
            font-size: 0.78rem;
            max-width: 1100px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ============ FAQ ACCORDION ============ */
        .faq-item {
            border: 1px solid #eef1f6;
            border-radius: 12px;
            margin-bottom: 10px;
            overflow: hidden;
            background: #fff;
            transition: all var(--transition-smooth);
        }
        .faq-item:hover {
            border-color: #dde2ec;
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 16px 20px;
            font-weight: 600;
            font-size: 0.95rem;
            color: #1e293b;
            background: #fafbfd;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            letter-spacing: 0.01em;
            transition: all var(--transition-smooth);
        }
        .faq-question:hover {
            background: #f3f5f9;
        }
        .faq-question .faq-arrow {
            font-size: 0.7rem;
            color: #94a3b8;
            transition: transform var(--transition-smooth);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-arrow {
            transform: rotate(180deg);
            color: #d4a853;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 20px;
            color: #475569;
            font-size: 0.88rem;
            line-height: 1.75;
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 4px 20px 18px;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1023px) {
            .app-sidebar {
                transform: translateX(-100%);
                width: 280px;
            }
            .app-sidebar.open {
                transform: translateX(0);
            }
            .main-content {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
            }
            .page-hero {
                padding: 40px 20px 36px;
                border-radius: 0 0 16px 16px;
                margin-top: var(--header-mobile-height);
            }
            .section-block {
                padding: 28px 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .section-title {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .page-hero {
                padding: 30px 14px 28px;
                border-radius: 0 0 12px 12px;
            }
            .section-block {
                padding: 22px 12px;
            }
            .stat-card {
                padding: 14px 12px;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .btn-brand,
            .btn-outline {
                padding: 9px 16px;
                font-size: 0.82rem;
                border-radius: 8px;
            }
            .sidebar-nav a {
                padding: 10px 12px;
                font-size: 0.85rem;
            }
        }
        @media (min-width: 1024px) {
            .app-sidebar {
                transform: translateX(0) !important;
            }
            .sidebar-overlay {
                display: none !important;
            }
        }