/* roulang page: index */
:root {
            --bg-900: #0A1428;
            --bg-800: #0D1A36;
            --bg-700: #0F1D3A;
            --surface-glass: rgba(255, 255, 255, 0.06);
            --surface-glass-hover: rgba(255, 255, 255, 0.11);
            --border-glass: rgba(255, 255, 255, 0.15);
            --border-glass-strong: rgba(255, 255, 255, 0.24);
            --text-primary: #F5F8FE;
            --text-secondary: #B8C5DB;
            --text-muted: #8A9AB5;
            --accent-blue: #2E6BE6;
            --accent-cyan: #3EC6E0;
            --accent-neon: #5EEAD4;
            --accent-indigo: #6366F1;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --shadow-glow: 0 0 18px rgba(62, 198, 224, 0.6);
            --shadow-glow-lg: 0 0 32px rgba(62, 198, 224, 0.75);
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
            --spacing-section: 72px;
            --spacing-section-mobile: 48px;
            --nav-width: 240px;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-900);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--accent-neon);
        }

        button,
        .btn {
            transition: all 0.3s ease;
            font-family: var(--font-sans);
        }
        button:focus-visible,
        .btn:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-neon);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ============ App Shell Navigation ============ */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .sidebar-nav {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--nav-width);
            background: rgba(10, 20, 40, 0.82);
            backdrop-filter: blur(22px);
            -webkit-backdrop-filter: blur(22px);
            border-right: 1px solid var(--border-glass);
            z-index: 1040;
            display: flex;
            flex-direction: column;
            padding: 24px 16px;
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .sidebar-logo {
            text-align: center;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 18px;
        }
        .sidebar-logo a {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--text-primary);
            background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
        }
        .sidebar-logo a:hover {
            filter: brightness(1.2);
        }

        .sidebar-nav-list {
            list-style: none;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sidebar-nav-list li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.28s ease;
            border: 1px solid transparent;
            position: relative;
        }
        .sidebar-nav-list li a i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--text-muted);
            transition: color 0.28s ease;
        }
        .sidebar-nav-list li a:hover {
            background: var(--surface-glass);
            color: var(--text-primary);
            border-color: rgba(255, 255, 255, 0.08);
        }
        .sidebar-nav-list li a:hover i {
            color: var(--accent-neon);
        }
        .sidebar-nav-list li a.active {
            background: linear-gradient(135deg, rgba(46, 107, 230, 0.25), rgba(62, 198, 224, 0.2));
            color: #fff;
            border-color: rgba(94, 234, 212, 0.4);
            box-shadow: 0 0 18px rgba(62, 198, 224, 0.2);
        }
        .sidebar-nav-list li a.active i {
            color: var(--accent-neon);
        }
        .sidebar-nav-list li a.active::after {
            content: '';
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-neon);
            box-shadow: 0 0 8px var(--accent-neon);
        }

        .sidebar-footer {
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
            line-height: 1.6;
        }

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

        /* ============ Mobile Top Bar ============ */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: rgba(10, 20, 40, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-glass);
            z-index: 1035;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
        }
        .mobile-topbar .mobile-logo a {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--text-primary);
            background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hamburger-btn {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--text-primary);
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .hamburger-btn:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
        }
        .hamburger-btn:focus-visible {
            outline: 2px solid var(--accent-neon);
            outline-offset: 2px;
        }

        /* ============ Base Sections ============ */
        .section-pad {
            padding: var(--spacing-section) 0;
        }
        .section-pad-sm {
            padding: var(--spacing-section-mobile) 0;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--accent-neon);
            margin-bottom: 10px;
            position: relative;
            padding-left: 18px;
        }
        .section-label::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-neon);
            box-shadow: 0 0 10px var(--accent-neon);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            line-height: 1.35;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 720px;
            margin-bottom: 32px;
            line-height: 1.85;
        }

        .glass-card {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
            overflow: hidden;
        }
        .glass-card:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45), 0 0 20px rgba(62, 198, 224, 0.25);
            transform: translateY(-4px);
        }
        .glass-card .card-body-inner {
            padding: 28px;
        }

        .btn-glow {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            border-radius: var(--radius-md);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            letter-spacing: 0.5px;
            box-shadow: var(--shadow-glow);
            transition: all 0.3s ease;
            display: inline-block;
            cursor: pointer;
        }
        .btn-glow:hover {
            box-shadow: var(--shadow-glow-lg);
            transform: translateY(-2px);
            color: #fff;
            filter: brightness(1.12);
        }
        .btn-glow:active {
            transform: translateY(0);
            box-shadow: 0 0 10px rgba(62, 198, 224, 0.4);
        }
        .btn-outline-glow {
            background: transparent;
            border: 1.5px solid var(--accent-cyan);
            border-radius: var(--radius-md);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            color: var(--accent-cyan);
            transition: all 0.3s ease;
            display: inline-block;
            cursor: pointer;
        }
        .btn-outline-glow:hover {
            background: rgba(62, 198, 224, 0.12);
            border-color: var(--accent-neon);
            color: var(--accent-neon);
            box-shadow: 0 0 18px rgba(62, 198, 224, 0.35);
            transform: translateY(-2px);
        }

        /* ============ Hero Section ============ */
        .hero-section {
            position: relative;
            min-height: 600px;
            background: url('/assets/images/f47d0c7cadb80fa6.webp') center/cover no-repeat;
            background-attachment: fixed;
            display: flex;
            align-items: center;
            overflow: hidden;
            padding: 80px 0 70px;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(10, 20, 40, 0.85) 0%, rgba(13, 26, 54, 0.75) 40%, rgba(15, 29, 58, 0.9) 100%);
            z-index: 1;
        }
        .hero-section .container-custom {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .hero-h1 {
            font-size: 42px;
            font-weight: 700;
            letter-spacing: 1px;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 20px;
            text-shadow: 0 2px 18px rgba(0, 0, 0, 0.55);
        }
        .hero-h1 .highlight {
            background: linear-gradient(135deg, #5EEAD4, #3EC6E0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 16px;
            color: rgba(245, 248, 254, 0.88);
            max-width: 600px;
            line-height: 1.9;
            margin-bottom: 30px;
        }
        .hero-btn-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-visual {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: var(--radius-xl);
            padding: 24px;
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
        }
        .hero-visual .vs-card {
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 14px;
        }
        .hero-visual .vs-card:last-child {
            margin-bottom: 0;
        }
        .vs-label {
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 1.5px;
            color: var(--accent-neon);
            text-transform: uppercase;
            margin-bottom: 6px;
        }
        .vs-content {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* ============ Data Strip ============ */
        .data-strip {
            background: rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
        }
        .data-strip .stat-item {
            text-align: center;
            padding: 12px 8px;
        }
        .data-strip .stat-number {
            font-size: 26px;
            font-weight: 700;
            background: linear-gradient(135deg, #5EEAD4, #3EC6E0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.3;
        }
        .data-strip .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ============ Bento Grid ============ */
        .bento-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 20px;
        }
        .bento-card {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all 0.35s ease;
            box-shadow: var(--shadow-card);
        }
        .bento-card:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45), 0 0 20px rgba(62, 198, 224, 0.25);
            transform: translateY(-4px);
        }
        .bento-card .bento-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, rgba(46, 107, 230, 0.3), rgba(62, 198, 224, 0.25));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent-neon);
            margin-bottom: 16px;
        }
        .bento-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .bento-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* ============ Scenario Cards ============ */
        .scenario-card {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 28px;
            height: 100%;
            transition: all 0.35s ease;
            box-shadow: var(--shadow-card);
        }
        .scenario-card:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
            transform: translateY(-4px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45), 0 0 20px rgba(62, 198, 224, 0.25);
        }
        .scenario-card .scenario-tag {
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--accent-neon);
            text-transform: uppercase;
            margin-bottom: 10px;
        }
        .scenario-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .scenario-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* ============ Screenshot Cards ============ */
        .screenshot-card {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.35s ease;
            box-shadow: var(--shadow-card);
            height: 100%;
        }
        .screenshot-card:hover {
            border-color: var(--border-glass-strong);
            transform: translateY(-4px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45), 0 0 20px rgba(62, 198, 224, 0.25);
        }
        .screenshot-card .shot-img-wrap {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: rgba(255, 255, 255, 0.03);
        }
        .screenshot-card .shot-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .screenshot-card:hover .shot-img-wrap img {
            transform: scale(1.04);
        }
        .screenshot-card .shot-body {
            padding: 20px 24px;
        }
        .screenshot-card .shot-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .screenshot-card .shot-body p {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ============ Case Cards ============ */
        .case-card {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 26px;
            height: 100%;
            transition: all 0.35s ease;
            box-shadow: var(--shadow-card);
        }
        .case-card:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
            transform: translateY(-4px);
        }
        .case-card .case-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            background: rgba(94, 234, 212, 0.15);
            color: var(--accent-neon);
            margin-bottom: 12px;
        }
        .case-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .case-card p {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ============ Pricing Cards ============ */
        .pricing-card {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            height: 100%;
            transition: all 0.35s ease;
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .pricing-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
        }
        .pricing-card.highlight {
            border-color: rgba(94, 234, 212, 0.5);
            background: linear-gradient(135deg, rgba(46, 107, 230, 0.22), rgba(62, 198, 224, 0.15)), var(--surface-glass);
            box-shadow: 0 0 28px rgba(62, 198, 224, 0.35);
        }
        .pricing-card .pricing-name {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 8px;
            letter-spacing: 1px;
        }
        .pricing-card .pricing-price {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .pricing-card .pricing-price span {
            font-size: 15px;
            font-weight: 400;
            color: var(--text-muted);
        }
        .pricing-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .pricing-card ul li {
            font-size: 13.5px;
            color: var(--text-secondary);
            padding: 6px 0;
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.6;
        }
        .pricing-card ul li i {
            color: var(--accent-neon);
            font-size: 14px;
            margin-top: 3px;
            flex-shrink: 0;
        }

        /* ============ Review Wall ============ */
        .review-card {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 24px;
            height: 100%;
            transition: all 0.35s ease;
            box-shadow: var(--shadow-card);
        }
        .review-card:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
        }
        .review-card .review-stars {
            color: #FFC94D;
            font-size: 14px;
            margin-bottom: 10px;
            letter-spacing: 2px;
        }
        .review-card .review-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 14px;
        }
        .review-card .review-author {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ============ Reputation Tags ============ */
        .reputation-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .reputation-tag {
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 30px;
            padding: 8px 18px;
            font-size: 13px;
            color: var(--text-secondary);
            cursor: default;
            transition: all 0.3s ease;
        }
        .reputation-tag:hover {
            background: rgba(94, 234, 212, 0.15);
            border-color: rgba(94, 234, 212, 0.4);
            color: var(--accent-neon);
        }

        /* ============ News Cards ============ */
        .news-card {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.35s ease;
            box-shadow: var(--shadow-card);
            height: 100%;
        }
        .news-card:hover {
            border-color: var(--border-glass-strong);
            transform: translateY(-4px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
        }
        .news-card .news-img-wrap {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: rgba(255, 255, 255, 0.03);
        }
        .news-card .news-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .news-card:hover .news-img-wrap img {
            transform: scale(1.04);
        }
        .news-card .news-body {
            padding: 20px 24px;
        }
        .news-card .news-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .news-card .news-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.5;
        }
        .news-card .news-excerpt {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ============ CTA Section ============ */
        .cta-section {
            position: relative;
            background: linear-gradient(135deg, #0A1428 0%, #0F1D3A 50%, #12264D 100%);
            border-radius: var(--radius-xl);
            padding: 64px 40px;
            text-align: center;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 50% 50%, rgba(94, 234, 212, 0.12) 0%, transparent 60%);
            animation: ctaPulse 6s ease-in-out infinite;
            z-index: 0;
        }
        @keyframes ctaPulse {
            0%, 100% { transform: scale(1); opacity: 0.6; }
            50% { transform: scale(1.06); opacity: 1; }
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        /* ============ FAQ ============ */
        .accordion-custom .accordion-item {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            transition: all 0.3s ease;
        }
        .accordion-custom .accordion-item:hover {
            border-color: var(--border-glass-strong);
        }
        .accordion-custom .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-size: 15px;
            font-weight: 600;
            padding: 18px 24px;
            border: none;
            box-shadow: none;
            transition: all 0.3s ease;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(94, 234, 212, 0.08);
            color: var(--accent-neon);
            box-shadow: none;
        }
        .accordion-custom .accordion-button::after {
            filter: brightness(0) invert(1);
            transition: all 0.3s ease;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 2px rgba(94, 234, 212, 0.4);
        }
        .accordion-custom .accordion-body {
            background: transparent;
            color: var(--text-secondary);
            font-size: 14px;
            padding: 16px 24px 20px;
            line-height: 1.8;
        }

        /* ============ Calendar / Schedule ============ */
        .schedule-item {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 18px 22px;
            margin-bottom: 12px;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .schedule-item:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
        }
        .schedule-date {
            font-size: 13px;
            color: var(--accent-neon);
            font-weight: 600;
            min-width: 70px;
        }
        .schedule-match {
            font-size: 14px;
            color: var(--text-primary);
            font-weight: 500;
        }
        .schedule-tag {
            font-size: 12px;
            padding: 4px 14px;
            border-radius: 20px;
            background: rgba(94, 234, 212, 0.12);
            color: var(--accent-neon);
        }

        /* ============ Partner ============ */
        .partner-logo {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 24px 16px;
            text-align: center;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-muted);
            transition: all 0.3s ease;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 80px;
        }
        .partner-logo:hover {
            border-color: var(--border-glass-strong);
            color: var(--text-secondary);
            background: var(--surface-glass-hover);
        }

        /* ============ Security ============ */
        .security-item {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 26px;
            height: 100%;
            transition: all 0.35s ease;
            text-align: center;
            box-shadow: var(--shadow-card);
        }
        .security-item:hover {
            border-color: var(--border-glass-strong);
            transform: translateY(-4px);
        }
        .security-item .sec-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(46, 107, 230, 0.3), rgba(62, 198, 224, 0.2));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent-neon);
            margin: 0 auto 14px;
        }
        .security-item h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .security-item p {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: #080F1F;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 48px 0 32px;
            margin-top: 40px;
        }
        .site-footer .footer-brand {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
        }
        .site-footer .footer-links a {
            color: var(--text-secondary);
            font-size: 13px;
            transition: color 0.25s ease;
        }
        .site-footer .footer-links a:hover {
            color: var(--accent-neon);
        }
        .site-footer .footer-copy {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.8;
        }
        .site-footer .footer-copy .sep {
            margin: 0 8px;
        }

        /* ============ Responsive ============ */
        @media (max-width: 1024px) {
            .section-title {
                font-size: 24px;
            }
            .hero-h1 {
                font-size: 34px;
            }
            .bento-grid {
                gap: 16px;
            }
        }

        @media (max-width: 768px) {
            .sidebar-nav {
                transform: translateX(-100%);
            }
            .sidebar-nav.open {
                transform: translateX(0);
            }
            .main-content {
                margin-left: 0;
            }
            .mobile-topbar {
                display: flex;
            }
            .mobile-topbar.active {
                box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
            }
            .hero-section {
                min-height: auto;
                padding: 80px 0 50px;
                background-attachment: scroll;
            }
            .hero-section .container-custom {
                padding-top: 0;
            }
            .hero-h1 {
                font-size: 26px;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .section-pad {
                padding: 48px 0;
            }
            .section-pad-sm {
                padding: 36px 0;
            }
            .section-title {
                font-size: 21px;
            }
            .bento-grid {
                grid-template-columns: 1fr;
            }
            .bento-card,
            .scenario-card,
            .screenshot-card,
            .case-card,
            .pricing-card,
            .review-card,
            .security-item {
                padding: 20px;
            }
            .cta-section {
                padding: 40px 20px;
            }
            .cta-section h2 {
                font-size: 22px;
            }
            .hero-btn-group {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-btn-group .btn {
                width: 100%;
                text-align: center;
            }
            .navbar-drawer-overlay {
                display: none;
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(0, 0, 0, 0.55);
                z-index: 1030;
            }
            .navbar-drawer-overlay.show {
                display: block;
            }
        }

        @media (max-width: 576px) {
            .hero-h1 {
                font-size: 22px;
            }
            .section-title {
                font-size: 19px;
            }
            .data-strip .stat-number {
                font-size: 20px;
            }
            .pricing-card .pricing-price {
                font-size: 27px;
            }
            .schedule-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .site-footer .footer-copy {
                font-size: 12px;
            }
            .site-footer .footer-links {
                gap: 12px;
                flex-wrap: wrap;
            }
        }

/* roulang page: category2 */
:root {
            --bg-900: #0A1428;
            --bg-800: #0D1A36;
            --bg-700: #0F1D3A;
            --surface-glass: rgba(255, 255, 255, 0.06);
            --surface-glass-hover: rgba(255, 255, 255, 0.11);
            --border-glass: rgba(255, 255, 255, 0.15);
            --border-glass-strong: rgba(255, 255, 255, 0.24);
            --text-primary: #F5F8FE;
            --text-secondary: #B8C5DB;
            --text-muted: #8A9AB5;
            --accent-blue: #2E6BE6;
            --accent-cyan: #3EC6E0;
            --accent-neon: #5EEAD4;
            --accent-indigo: #6366F1;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --shadow-glow: 0 0 18px rgba(62, 198, 224, 0.6);
            --shadow-glow-lg: 0 0 32px rgba(62, 198, 224, 0.75);
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
            --spacing-section: 72px;
            --spacing-section-mobile: 48px;
            --nav-width: 240px;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', Arial, sans-serif;
        }

        :root {
            --bg-900: #0A1428;
            --bg-800: #0D1A36;
            --bg-700: #0F1D3A;
            --surface-glass: rgba(255, 255, 255, 0.06);
            --surface-glass-hover: rgba(255, 255, 255, 0.11);
            --border-glass: rgba(255, 255, 255, 0.15);
            --border-glass-strong: rgba(255, 255, 255, 0.24);
            --text-primary: #F5F8FE;
            --text-secondary: #B8C5DB;
            --text-muted: #8A9AB5;
            --accent-blue: #2E6BE6;
            --accent-cyan: #3EC6E0;
            --accent-neon: #5EEAD4;
            --accent-indigo: #6366F1;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --shadow-glow: 0 0 18px rgba(62, 198, 224, 0.6);
            --shadow-glow-lg: 0 0 32px rgba(62, 198, 224, 0.75);
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
            --spacing-section: 72px;
            --spacing-section-mobile: 48px;
            --nav-width: 240px;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', Arial, sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-900);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease;
        }

        a:hover {
            color: var(--accent-neon);
        }

        button,
        .btn {
            transition: all 0.3s ease;
            font-family: var(--font-sans);
        }

        button:focus-visible,
        .btn:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-neon);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ============ App Shell Navigation ============ */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .sidebar-nav {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--nav-width);
            background: rgba(10, 20, 40, 0.82);
            backdrop-filter: blur(22px);
            -webkit-backdrop-filter: blur(22px);
            border-right: 1px solid var(--border-glass);
            z-index: 1040;
            display: flex;
            flex-direction: column;
            padding: 24px 16px;
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .sidebar-logo {
            text-align: center;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 18px;
        }

        .sidebar-logo a {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--text-primary);
            background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
        }

        .sidebar-logo a:hover {
            filter: brightness(1.2);
        }

        .sidebar-nav-list {
            list-style: none;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
            margin: 0;
            padding: 0;
        }

        .sidebar-nav-list li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.28s ease;
            border: 1px solid transparent;
            position: relative;
        }

        .sidebar-nav-list li a i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--text-muted);
            transition: color 0.28s ease;
        }

        .sidebar-nav-list li a:hover {
            background: var(--surface-glass);
            color: var(--text-primary);
            border-color: rgba(255, 255, 255, 0.08);
        }

        .sidebar-nav-list li a:hover i {
            color: var(--accent-neon);
        }

        .sidebar-nav-list li a.active {
            background: linear-gradient(135deg, rgba(46, 107, 230, 0.25), rgba(62, 198, 224, 0.2));
            color: #fff;
            border-color: rgba(94, 234, 212, 0.4);
            box-shadow: 0 0 18px rgba(62, 198, 224, 0.2);
        }

        .sidebar-nav-list li a.active i {
            color: var(--accent-neon);
        }

        .sidebar-nav-list li a.active::after {
            content: '';
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-neon);
            box-shadow: 0 0 8px var(--accent-neon);
        }

        .sidebar-footer {
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
            line-height: 1.6;
        }

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

        /* ============ Mobile Top Bar ============ */
        .mobile-topbar {
            display: none;
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(10, 20, 40, 0.9);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-glass);
            padding: 10px 16px;
            align-items: center;
            gap: 12px;
        }

        .hamburger-btn {
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 22px;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border: 1px solid var(--border-glass);
            transition: all 0.3s ease;
        }

        .hamburger-btn:hover {
            background: var(--surface-glass);
            box-shadow: var(--shadow-glow);
        }

        .mobile-brand {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--text-primary);
            background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* ============ General Layout ============ */
        .main-content {
            padding-bottom: 0;
        }

        main {
            flex: 1;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 40px 24px;
        }

        section {
            margin-bottom: var(--spacing-section);
            padding: 0;
        }

        .section-heading {
            margin-bottom: 24px;
        }

        .section-heading h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }

        .section-heading p {
            color: var(--text-secondary);
            font-size: 15px;
            margin-bottom: 0;
        }

        .glass-card {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }

        .glass-card:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
            transform: translateY(-4px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45), var(--shadow-glow);
        }

        .btn-glow {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            border: none;
            border-radius: var(--radius-md);
            padding: 12px 28px;
            font-weight: 600;
            letter-spacing: 0.5px;
            box-shadow: var(--shadow-glow);
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-glow:hover {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-neon));
            color: #fff;
            box-shadow: var(--shadow-glow-lg);
            transform: translateY(-2px);
        }

        /* ============ Page Hero ============ */
        .page-hero {
            padding: 20px 0 10px;
        }

        .page-hero h1 {
            font-size: 36px;
            font-weight: 700;
            letter-spacing: 1px;
            color: var(--text-primary);
            margin-bottom: 16px;
            background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-hero p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 800px;
            line-height: 1.8;
        }

        /* ============ Custom Tabs ============ */
        .custom-tabs {
            border-bottom: 1px solid var(--border-glass);
            gap: 8px;
            flex-wrap: wrap;
        }

        .custom-tabs .nav-link {
            background: transparent;
            border: none;
            color: var(--text-secondary);
            font-weight: 500;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
            position: relative;
            font-size: 14px;
        }

        .custom-tabs .nav-link:hover {
            color: var(--text-primary);
            background: var(--surface-glass);
        }

        .custom-tabs .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(46, 107, 230, 0.3), rgba(62, 198, 224, 0.25));
            border: 1px solid rgba(94, 234, 212, 0.5);
            box-shadow: 0 0 18px rgba(62, 198, 224, 0.25);
        }

        .custom-tabs .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 30px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent-neon);
        }

        /* ============ Ranking Table ============ */
        .ranking-table-section .table-responsive {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 8px;
            box-shadow: var(--shadow-card);
        }

        .ranking-table {
            width: 100%;
            margin-bottom: 0;
            border-collapse: separate;
            border-spacing: 0;
            color: var(--text-primary);
        }

        .ranking-table thead th {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 13px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            padding: 14px 16px;
            border-bottom: 1px solid var(--border-glass);
            text-align: left;
        }

        .ranking-table tbody td {
            padding: 14px 16px;
            font-size: 14px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            vertical-align: middle;
        }

        .ranking-table tbody tr:last-child td {
            border-bottom: none;
        }

        .ranking-table tbody tr {
            transition: background 0.25s ease;
        }

        .ranking-table tbody tr:hover {
            background: rgba(255, 255, 255, 0.03);
        }

        .rank-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            font-weight: 700;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
        }

        .rank-1 { background: rgba(94, 234, 212, 0.2); color: var(--accent-neon); }
        .rank-2 { background: rgba(62, 198, 224, 0.2); color: var(--accent-cyan); }
        .rank-3 { background: rgba(46, 107, 230, 0.2); color: var(--accent-blue); }

        .trend-up { color: #2ecc71; }
        .trend-down { color: #e74c3c; }
        .trend-flat { color: var(--text-muted); }

        /* ============ Trend Cards ============ */
        .trend-card {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 22px;
            box-shadow: var(--shadow-card);
            height: 100%;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .trend-card:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45), var(--shadow-glow);
        }

        .trend-card .trend-icon {
            font-size: 28px;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }

        .trend-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .trend-card .trend-value {
            font-size: 24px;
            font-weight: 700;
            color: var(--accent-neon);
            margin-bottom: 4px;
        }

        .trend-card .trend-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .trend-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
            height: 100%;
            min-height: 220px;
            object-fit: cover;
        }

        /* ============ Period Selector ============ */
        .period-selector-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .period-btn {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            color: var(--text-secondary);
            padding: 10px 22px;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 14px;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .period-btn:hover {
            background: var(--surface-glass-hover);
            color: var(--text-primary);
            border-color: var(--border-glass-strong);
        }

        .period-btn.active {
            background: linear-gradient(135deg, rgba(46, 107, 230, 0.3), rgba(62, 198, 224, 0.25));
            color: #fff;
            border-color: rgba(94, 234, 212, 0.5);
            box-shadow: 0 0 18px rgba(62, 198, 224, 0.25);
        }

        /* ============ More Analysis ============ */
        .more-analysis-section {
            text-align: center;
            padding: 20px 0;
        }

        /* ============ FAQ ============ */
        .accordion-custom .accordion-item {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
        }

        .accordion-custom .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            padding: 18px 20px;
            font-size: 15px;
            box-shadow: none;
            border: none;
            border-radius: var(--radius-md) !important;
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(46, 107, 230, 0.15);
            color: #fff;
            box-shadow: none;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            border-color: var(--border-glass-strong);
        }

        .accordion-custom .accordion-button::after {
            filter: invert(1) brightness(1.5);
        }

        .accordion-custom .accordion-body {
            background: transparent;
            color: var(--text-secondary);
            padding: 0 20px 18px;
            font-size: 14px;
            line-height: 1.8;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: rgba(10, 20, 40, 0.9);
            border-top: 1px solid var(--border-glass);
            padding: 32px 0 24px;
            margin-top: 40px;
            width: 100%;
        }

        .footer-brand {
            font-size: 22px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--text-primary);
            background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .footer-copy {
            color: var(--text-muted);
            font-size: 13px;
            line-height: 1.8;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-links li a {
            color: var(--text-secondary);
            font-size: 14px;
            transition: color 0.25s ease;
        }

        .footer-links li a:hover {
            color: var(--accent-neon);
        }

        .footer-links.justify-content-md-end {
            justify-content: flex-end;
        }

        .footer-copy .sep {
            margin: 0 8px;
            opacity: 0.4;
        }

        /* ============ Responsive ============ */
        @media (max-width: 991.98px) {
            :root {
                --spacing-section: 56px;
            }
            main {
                padding: 32px 20px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .trend-image {
                min-height: 180px;
                margin-top: 16px;
            }
        }

        @media (max-width: 767.98px) {
            .app-shell {
                flex-direction: column;
            }
            .sidebar-nav {
                transform: translateX(-100%);
                width: 260px;
                z-index: 1045;
            }
            .sidebar-nav.show {
                transform: translateX(0);
                box-shadow: 0 0 40px rgba(0, 0, 0, 0.5);
            }
            .main-content {
                margin-left: 0;
                width: 100%;
            }
            .mobile-topbar {
                display: flex;
            }
            :root {
                --spacing-section: 40px;
                --nav-width: 0px;
            }
            main {
                padding: 24px 16px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .ranking-table thead th,
            .ranking-table tbody td {
                padding: 10px 12px;
                font-size: 13px;
            }
            .trend-card {
                padding: 18px;
            }
            .footer-links {
                gap: 12px;
            }
            .footer-links.justify-content-md-end {
                justify-content: flex-start;
                margin-top: 12px;
            }
        }

        @media (max-width: 575.98px) {
            .page-hero h1 {
                font-size: 22px;
            }
            .section-heading h2 {
                font-size: 20px;
            }
            .btn-glow {
                padding: 10px 20px;
                font-size: 14px;
            }
            .period-btn {
                padding: 8px 16px;
                font-size: 13px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-900: #0A1428;
            --bg-800: #0D1A36;
            --bg-700: #0F1D3A;
            --surface-glass: rgba(255, 255, 255, 0.06);
            --surface-glass-hover: rgba(255, 255, 255, 0.11);
            --border-glass: rgba(255, 255, 255, 0.15);
            --border-glass-strong: rgba(255, 255, 255, 0.24);
            --text-primary: #F5F8FE;
            --text-secondary: #B8C5DB;
            --text-muted: #8A9AB5;
            --accent-blue: #2E6BE6;
            --accent-cyan: #3EC6E0;
            --accent-neon: #5EEAD4;
            --accent-indigo: #6366F1;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --shadow-glow: 0 0 18px rgba(62, 198, 224, 0.6);
            --shadow-glow-lg: 0 0 32px rgba(62, 198, 224, 0.75);
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
            --spacing-section: 72px;
            --spacing-section-mobile: 48px;
            --nav-width: 240px;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', Arial, sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-900);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease;
        }

        a:hover {
            color: var(--accent-neon);
        }

        button,
        .btn {
            transition: all 0.3s ease;
            font-family: var(--font-sans);
        }

        button:focus-visible,
        .btn:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-neon);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ============ App Shell Navigation ============ */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .sidebar-nav {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--nav-width);
            background: rgba(10, 20, 40, 0.82);
            backdrop-filter: blur(22px);
            -webkit-backdrop-filter: blur(22px);
            border-right: 1px solid var(--border-glass);
            z-index: 1040;
            display: flex;
            flex-direction: column;
            padding: 24px 16px;
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .sidebar-logo {
            text-align: center;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 18px;
        }

        .sidebar-logo a {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--text-primary);
            background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
        }

        .sidebar-logo a:hover {
            filter: brightness(1.2);
        }

        .sidebar-nav-list {
            list-style: none;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding-left: 0;
            margin-bottom: 0;
        }

        .sidebar-nav-list li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.28s ease;
            border: 1px solid transparent;
            position: relative;
        }

        .sidebar-nav-list li a i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--text-muted);
            transition: color 0.28s ease;
        }

        .sidebar-nav-list li a:hover {
            background: var(--surface-glass);
            color: var(--text-primary);
            border-color: rgba(255, 255, 255, 0.08);
        }

        .sidebar-nav-list li a:hover i {
            color: var(--accent-neon);
        }

        .sidebar-nav-list li a.active {
            background: linear-gradient(135deg, rgba(46, 107, 230, 0.25), rgba(62, 198, 224, 0.2));
            color: #fff;
            border-color: rgba(94, 234, 212, 0.4);
            box-shadow: 0 0 18px rgba(62, 198, 224, 0.2);
        }

        .sidebar-nav-list li a.active i {
            color: var(--accent-neon);
        }

        .sidebar-nav-list li a.active::after {
            content: '';
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-neon);
            box-shadow: 0 0 8px var(--accent-neon);
        }

        .sidebar-footer {
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
            line-height: 1.6;
        }

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

        /* ============ Mobile Top Bar ============ */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1038;
            background: rgba(10, 20, 40, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glass);
            padding: 12px 16px;
            align-items: center;
            justify-content: space-between;
        }

        .mobile-topbar .mobile-logo {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 1.5px;
            color: var(--text-primary);
        }

        .mobile-topbar .hamburger-btn {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            color: var(--text-primary);
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            cursor: pointer;
        }

        .mobile-topbar .hamburger-btn:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
        }

        /* ============ Offcanvas Sidebar ============ */
        .offcanvas-custom .offcanvas-body {
            padding: 24px 16px;
            display: flex;
            flex-direction: column;
        }

        .offcanvas-custom .sidebar-nav-list {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
            list-style: none;
            padding-left: 0;
            margin-bottom: 0;
        }

        .offcanvas-custom .sidebar-nav-list li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.28s ease;
            border: 1px solid transparent;
            position: relative;
        }

        .offcanvas-custom .sidebar-nav-list li a i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--text-muted);
            transition: color 0.28s ease;
        }

        .offcanvas-custom .sidebar-nav-list li a:hover {
            background: var(--surface-glass);
            color: var(--text-primary);
            border-color: rgba(255, 255, 255, 0.08);
        }

        .offcanvas-custom .sidebar-nav-list li a:hover i {
            color: var(--accent-neon);
        }

        .offcanvas-custom .sidebar-nav-list li a.active {
            background: linear-gradient(135deg, rgba(46, 107, 230, 0.25), rgba(62, 198, 224, 0.2));
            color: #fff;
            border-color: rgba(94, 234, 212, 0.4);
            box-shadow: 0 0 18px rgba(62, 198, 224, 0.2);
        }

        .offcanvas-custom .sidebar-nav-list li a.active i {
            color: var(--accent-neon);
        }

        .offcanvas-custom .sidebar-nav-list li a.active::after {
            content: '';
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-neon);
            box-shadow: 0 0 8px var(--accent-neon);
        }

        .offcanvas-custom .sidebar-logo {
            text-align: center;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 18px;
        }

        .offcanvas-custom .sidebar-logo a {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--text-primary);
            background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
        }

        .offcanvas-custom .sidebar-footer {
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
            line-height: 1.6;
        }

        /* ============ Container & Sections ============ */
        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 32px;
            padding-right: 32px;
        }

        .page-main {
            flex: 1;
            padding-top: 48px;
            padding-bottom: 40px;
        }

        .section-block {
            padding: var(--spacing-section) 0;
            position: relative;
        }

        .section-block + .section-block {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            color: var(--text-primary);
            line-height: 1.4;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.8;
        }

        /* ============ Breadcrumb ============ */
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .breadcrumb-custom a {
            color: var(--text-muted);
            transition: color 0.25s ease;
        }

        .breadcrumb-custom a:hover {
            color: var(--accent-neon);
        }

        .breadcrumb-custom .separator {
            color: rgba(255, 255, 255, 0.25);
            font-size: 10px;
        }

        .breadcrumb-custom .current {
            color: var(--accent-cyan);
            font-weight: 500;
        }

        /* ============ Category H1 Section ============ */
        .category-hero {
            padding-bottom: 40px;
        }

        .category-hero h1 {
            font-size: 34px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--text-primary);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .category-hero .intro-text {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
            max-width: 820px;
        }

        /* ============ Glass Cards ============ */
        .glass-card {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all 0.35s ease;
            box-shadow: var(--shadow-card);
            height: 100%;
        }

        .glass-card:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4), 0 0 22px rgba(62, 198, 224, 0.15);
        }

        .glass-card .card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .glass-card .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ============ Buttons ============ */
        .btn-glow {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.3px;
            box-shadow: var(--shadow-glow);
            transition: all 0.35s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-glow:hover {
            color: #fff;
            box-shadow: var(--shadow-glow-lg);
            transform: translateY(-2px);
            filter: brightness(1.1);
        }

        .btn-glow:active {
            transform: translateY(0);
            box-shadow: var(--shadow-glow);
        }

        .btn-outline-glass {
            background: transparent;
            color: var(--accent-cyan);
            border: 1px solid var(--border-glass-strong);
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-glass:hover {
            background: var(--surface-glass);
            color: var(--accent-neon);
            border-color: rgba(94, 234, 212, 0.5);
            box-shadow: 0 0 14px rgba(62, 198, 224, 0.25);
        }

        /* ============ Filter Bar ============ */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            padding: 20px 24px;
            background: var(--surface-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
        }

        .filter-bar .form-select,
        .filter-bar .form-control {
            background: rgba(15, 29, 58, 0.7);
            border: 1px solid var(--border-glass);
            color: var(--text-primary);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            font-size: 14px;
            transition: all 0.3s ease;
            min-width: 160px;
        }

        .filter-bar .form-select:focus,
        .filter-bar .form-control:focus {
            border-color: var(--accent-neon);
            box-shadow: 0 0 12px rgba(94, 234, 212, 0.3);
            background: rgba(15, 29, 58, 0.9);
            color: var(--text-primary);
        }

        .filter-bar .form-select option {
            background: var(--bg-800);
            color: var(--text-primary);
        }

        .filter-label {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        /* ============ Match Cards ============ */
        .match-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .match-card {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            padding: 20px 24px;
            background: var(--surface-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            transition: all 0.32s ease;
        }

        .match-card:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
            transform: translateX(4px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }

        .match-time {
            font-size: 14px;
            color: var(--accent-cyan);
            font-weight: 600;
            white-space: nowrap;
            min-width: 110px;
            text-align: center;
        }

        .match-teams {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            flex-wrap: wrap;
        }

        .match-teams .vs {
            color: var(--text-muted);
            font-size: 13px;
            font-weight: 400;
        }

        .match-level-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(62, 198, 224, 0.15);
            color: var(--accent-neon);
            border: 1px solid rgba(94, 234, 212, 0.25);
            white-space: nowrap;
        }

        .match-level-tag.tag-blue {
            background: rgba(46, 107, 230, 0.18);
            color: #8EB1FF;
            border-color: rgba(46, 107, 230, 0.3);
        }

        .match-level-tag.tag-indigo {
            background: rgba(99, 102, 241, 0.18);
            color: #B4B8FF;
            border-color: rgba(99, 102, 241, 0.3);
        }

        .match-status {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
            text-align: center;
            min-width: 60px;
        }

        /* ============ Coverage Grid ============ */
        .coverage-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .coverage-item {
            text-align: center;
            padding: 28px 20px;
        }

        .coverage-item .coverage-icon {
            font-size: 28px;
            color: var(--accent-neon);
            margin-bottom: 12px;
        }

        .coverage-item .coverage-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .coverage-item .coverage-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ============ Hot Match Focus ============ */
        .hot-match-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .hot-match-card {
            overflow: hidden;
            border-radius: var(--radius-md);
            position: relative;
            min-height: 280px;
            display: flex;
            align-items: flex-end;
        }

        .hot-match-card img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-md);
        }

        .hot-match-card .hot-overlay {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 20px;
            background: linear-gradient(180deg, transparent 0%, rgba(10, 20, 40, 0.88) 55%, rgba(10, 20, 40, 0.96) 100%);
            border-radius: 0 0 var(--radius-md) var(--radius-md);
        }

        .hot-match-card .hot-match-name {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 6px;
        }

        .hot-match-card .hot-match-meta {
            font-size: 13px;
            color: var(--text-secondary);
        }

        /* ============ News List ============ */
        .news-brief-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .news-brief-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 20px;
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
        }

        .news-brief-item:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
        }

        .news-brief-item .news-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-neon);
            margin-top: 8px;
            flex-shrink: 0;
            box-shadow: 0 0 8px rgba(94, 234, 212, 0.5);
        }

        .news-brief-item .news-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .news-brief-item .news-date {
            font-size: 12px;
            color: var(--text-muted);
            white-space: nowrap;
            margin-left: auto;
            flex-shrink: 0;
        }

        /* ============ Subscribe CTA ============ */
        .subscribe-cta {
            background: linear-gradient(135deg, rgba(46, 107, 230, 0.2), rgba(62, 198, 224, 0.15));
            border: 1px solid rgba(94, 234, 212, 0.3);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            position: relative;
            overflow: hidden;
        }

        .subscribe-cta::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(94, 234, 212, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .subscribe-cta .cta-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }

        .subscribe-cta .cta-desc {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }

        .subscribe-cta .subscribe-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .subscribe-cta .subscribe-form .form-control {
            background: rgba(15, 29, 58, 0.7);
            border: 1px solid var(--border-glass);
            color: var(--text-primary);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            font-size: 14px;
            transition: all 0.3s ease;
            flex: 1;
            min-width: 220px;
        }

        .subscribe-cta .subscribe-form .form-control:focus {
            border-color: var(--accent-neon);
            box-shadow: 0 0 14px rgba(94, 234, 212, 0.3);
            background: rgba(15, 29, 58, 0.9);
        }

        .subscribe-cta .subscribe-form .form-control::placeholder {
            color: var(--text-muted);
        }

        /* ============ FAQ Accordion ============ */
        .faq-accordion .accordion-item {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
            overflow: hidden;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }

        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-size: 15px;
            font-weight: 600;
            padding: 16px 20px;
            border: none;
            box-shadow: none;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(46, 107, 230, 0.12);
            color: var(--accent-neon);
            box-shadow: none;
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: var(--accent-neon);
        }

        .faq-accordion .accordion-button::after {
            filter: brightness(0) invert(0.7);
        }

        .faq-accordion .accordion-body {
            padding: 16px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: rgba(10, 20, 40, 0.6);
            border-top: 1px solid var(--border-glass);
            padding: 48px 0 32px;
            margin-top: 32px;
        }

        .site-footer .footer-brand {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 1.5px;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .site-footer .footer-copy {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .site-footer .footer-copy .sep {
            margin: 0 8px;
            color: rgba(255, 255, 255, 0.2);
        }

        .site-footer .footer-links {
            list-style: none;
            padding-left: 0;
            margin-bottom: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
        }

        .site-footer .footer-links a {
            color: var(--text-secondary);
            font-size: 13px;
            transition: color 0.25s ease;
        }

        .site-footer .footer-links a:hover {
            color: var(--accent-neon);
        }

        /* ============ Responsive ============ */
        @media (max-width: 1199.98px) {
            .container-custom {
                padding-left: 24px;
                padding-right: 24px;
            }
            .coverage-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hot-match-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 991.98px) {
            .sidebar-nav {
                display: none;
            }
            .mobile-topbar {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: 60px;
            }
            .page-main {
                padding-top: 24px;
            }
            .section-block {
                padding: var(--spacing-section-mobile) 0;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .filter-bar {
                flex-direction: column;
                align-items: stretch;
            }
            .filter-bar .form-select,
            .filter-bar .form-control {
                min-width: 100%;
            }
            .match-card {
                flex-direction: column;
                align-items: stretch;
                text-align: center;
                gap: 12px;
            }
            .match-time {
                min-width: auto;
            }
            .match-teams {
                justify-content: center;
            }
            .match-status {
                text-align: center;
            }
            .coverage-grid {
                grid-template-columns: 1fr;
            }
            .hot-match-grid {
                grid-template-columns: 1fr;
            }
            .news-brief-item {
                flex-wrap: wrap;
            }
            .news-brief-item .news-date {
                margin-left: 0;
                width: 100%;
            }
        }

        @media (max-width: 575.98px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section-title {
                font-size: 22px;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .btn-glow {
                padding: 10px 20px;
                font-size: 14px;
            }
            .subscribe-cta {
                padding: 28px 20px;
            }
            .match-teams {
                font-size: 14px;
                gap: 8px;
            }
            .hot-match-card {
                min-height: 220px;
            }
        }

/* roulang page: category3 */
:root {
      --bg-900: #0A1428;
      --bg-800: #0D1A36;
      --bg-700: #0F1D3A;
      --surface-glass: rgba(255, 255, 255, 0.06);
      --surface-glass-hover: rgba(255, 255, 255, 0.11);
      --border-glass: rgba(255, 255, 255, 0.15);
      --border-glass-strong: rgba(255, 255, 255, 0.24);
      --text-primary: #F5F8FE;
      --text-secondary: #B8C5DB;
      --text-muted: #8A9AB5;
      --accent-blue: #2E6BE6;
      --accent-cyan: #3EC6E0;
      --accent-neon: #5EEAD4;
      --accent-indigo: #6366F1;
      --radius-sm: 10px;
      --radius-md: 16px;
      --radius-lg: 20px;
      --radius-xl: 24px;
      --shadow-glow: 0 0 18px rgba(62, 198, 224, 0.6);
      --shadow-glow-lg: 0 0 32px rgba(62, 198, 224, 0.75);
      --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
      --spacing-section: 72px;
      --spacing-section-mobile: 48px;
      --nav-width: 240px;
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', Arial, sans-serif;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-sans);
      background: var(--bg-900);
      color: var(--text-primary);
      line-height: 1.75;
      font-size: 15px;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      min-height: 100vh;
      overflow-x: hidden;
    }

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

    a {
      color: var(--accent-cyan);
      text-decoration: none;
      transition: color 0.25s ease;
    }

    a:hover {
      color: var(--accent-neon);
    }

    button,
    .btn {
      transition: all 0.3s ease;
      font-family: var(--font-sans);
    }

    button:focus-visible,
    .btn:focus-visible,
    a:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible {
      outline: 2px solid var(--accent-neon);
      outline-offset: 2px;
      border-radius: 4px;
    }

    /* ============ App Shell Navigation ============ */
    .app-shell {
      display: flex;
      min-height: 100vh;
    }

    .sidebar-nav {
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      width: var(--nav-width);
      background: rgba(10, 20, 40, 0.82);
      backdrop-filter: blur(22px);
      -webkit-backdrop-filter: blur(22px);
      border-right: 1px solid var(--border-glass);
      z-index: 1040;
      display: flex;
      flex-direction: column;
      padding: 24px 16px;
      transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .sidebar-logo {
      text-align: center;
      padding-bottom: 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      margin-bottom: 18px;
    }

    .sidebar-logo a {
      font-size: 24px;
      font-weight: 700;
      letter-spacing: 2px;
      color: var(--text-primary);
      background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      display: inline-block;
    }

    .sidebar-logo a:hover {
      filter: brightness(1.2);
    }

    .sidebar-nav-list {
      list-style: none;
      flex: 1;
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .sidebar-nav-list li a {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px 16px;
      border-radius: var(--radius-md);
      color: var(--text-secondary);
      font-size: 14px;
      font-weight: 500;
      transition: all 0.28s ease;
      border: 1px solid transparent;
      position: relative;
    }

    .sidebar-nav-list li a i {
      width: 20px;
      text-align: center;
      font-size: 16px;
      color: var(--text-muted);
      transition: color 0.28s ease;
    }

    .sidebar-nav-list li a:hover {
      background: var(--surface-glass);
      color: var(--text-primary);
      border-color: rgba(255, 255, 255, 0.08);
    }

    .sidebar-nav-list li a:hover i {
      color: var(--accent-neon);
    }

    .sidebar-nav-list li a.active {
      background: linear-gradient(135deg, rgba(46, 107, 230, 0.25), rgba(62, 198, 224, 0.2));
      color: #fff;
      border-color: rgba(94, 234, 212, 0.4);
      box-shadow: 0 0 18px rgba(62, 198, 224, 0.2);
    }

    .sidebar-nav-list li a.active i {
      color: var(--accent-neon);
    }

    .sidebar-nav-list li a.active::after {
      content: '';
      position: absolute;
      right: 8px;
      top: 50%;
      transform: translateY(-50%);
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent-neon);
      box-shadow: 0 0 8px var(--accent-neon);
    }

    .sidebar-footer {
      padding-top: 16px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 12px;
      color: var(--text-muted);
      text-align: center;
      line-height: 1.6;
    }

    .main-content {
      flex: 1;
      margin-left: var(--nav-width);
      display: flex;
      flex-direction: column;
      min-height: 100vh;
      background: linear-gradient(160deg, #0A1428 0%, #0D1A36 45%, #0A1428 100%);
    }

    /* ============ Mobile Top Bar ============ */
    .mobile-topbar {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 56px;
      background: rgba(10, 20, 40, 0.9);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--border-glass);
      z-index: 1035;
      align-items: center;
      padding: 0 16px;
      gap: 12px;
    }

    .mobile-topbar .mobile-logo {
      font-size: 20px;
      font-weight: 700;
      letter-spacing: 1.5px;
      background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .mobile-topbar .hamburger-btn {
      background: transparent;
      border: 1px solid var(--border-glass);
      color: var(--text-primary);
      width: 38px;
      height: 38px;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      cursor: pointer;
      margin-left: auto;
      transition: all 0.3s ease;
    }

    .mobile-topbar .hamburger-btn:hover {
      background: var(--surface-glass);
      border-color: var(--accent-neon);
      color: var(--accent-neon);
    }

    .sidebar-backdrop {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.55);
      z-index: 1030;
      opacity: 0;
      transition: opacity 0.3s ease;
    }

    .sidebar-backdrop.show {
      display: block;
      opacity: 1;
    }

    /* ============ Container ============ */
    .container-custom {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* ============ Sections ============ */
    .section-block {
      padding: 48px 0;
      position: relative;
    }

    .section-block+.section-block {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
    }

    .section-eyebrow {
      display: inline-block;
      padding: 4px 14px;
      border-radius: 100px;
      background: rgba(62, 198, 224, 0.12);
      color: var(--accent-neon);
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.5px;
      margin-bottom: 12px;
      border: 1px solid rgba(94, 234, 212, 0.25);
    }

    .section-title {
      font-size: 24px;
      font-weight: 700;
      color: var(--text-primary);
      letter-spacing: 0.5px;
      margin-bottom: 12px;
    }

    .section-desc {
      color: var(--text-secondary);
      font-size: 15px;
      max-width: 680px;
    }

    /* ============ Glass Card ============ */
    .glass-card {
      background: var(--surface-glass);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-lg);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      box-shadow: var(--shadow-card);
      transition: all 0.3s ease;
    }

    .glass-card:hover {
      background: var(--surface-glass-hover);
      border-color: var(--border-glass-strong);
      transform: translateY(-4px);
      box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
    }

    /* ============ Page Header ============ */
    .page-header {
      padding: 56px 0 40px;
    }

    .page-header h1 {
      font-size: 32px;
      font-weight: 700;
      color: var(--text-primary);
      letter-spacing: 0.5px;
      margin-bottom: 16px;
      background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      display: inline-block;
    }

    .page-header .lead {
      font-size: 16px;
      color: var(--text-secondary);
      max-width: 720px;
      line-height: 1.8;
    }

    /* ============ Step Cards ============ */
    .step-card {
      padding: 24px;
      height: 100%;
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-glass);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      transition: all 0.3s ease;
    }

    .step-card:hover {
      background: var(--surface-glass-hover);
      border-color: var(--border-glass-strong);
      transform: translateY(-4px);
    }

    .step-number {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
      box-shadow: 0 0 14px rgba(62, 198, 224, 0.5);
      margin-bottom: 16px;
    }

    .step-title {
      font-size: 17px;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 8px;
    }

    .step-text {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* ============ Article Cards ============ */
    .article-card {
      background: var(--surface-glass);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: all 0.3s ease;
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    .article-card:hover {
      background: var(--surface-glass-hover);
      border-color: var(--border-glass-strong);
      transform: translateY(-4px);
      box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
    }

    .article-card img {
      width: 100%;
      height: 170px;
      object-fit: cover;
      border-bottom: 1px solid var(--border-glass);
    }

    .article-card .article-body {
      padding: 18px 20px 20px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .article-card .article-tag {
      font-size: 11px;
      padding: 3px 10px;
      border-radius: 100px;
      background: rgba(46, 107, 230, 0.2);
      color: var(--accent-cyan);
      border: 1px solid rgba(62, 198, 224, 0.3);
      margin-bottom: 10px;
      display: inline-block;
      width: fit-content;
    }

    .article-card .article-title {
      font-size: 16px;
      font-weight: 600;
      color: var(--text-primary);
      line-height: 1.5;
      margin-bottom: 8px;
    }

    .article-card .article-date {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 10px;
    }

    .article-card .article-summary {
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.7;
      flex: 1;
    }

    .article-card a {
      font-weight: 600;
      font-size: 13px;
      color: var(--accent-cyan);
      margin-top: 12px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .article-card a:hover {
      color: var(--accent-neon);
    }

    /* ============ Term Tags ============ */
    .term-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .term-tag {
      padding: 10px 18px;
      border-radius: 100px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-glass);
      color: var(--text-secondary);
      font-size: 14px;
      font-weight: 500;
      transition: all 0.3s ease;
      cursor: default;
    }

    .term-tag:hover {
      background: rgba(94, 234, 212, 0.12);
      border-color: var(--accent-neon);
      color: var(--accent-neon);
      box-shadow: 0 0 12px rgba(94, 234, 212, 0.3);
    }

    /* ============ Scenario Tabs ============ */
    .scenario-tabs .nav-pills .nav-link {
      background: transparent;
      border: 1px solid var(--border-glass);
      color: var(--text-secondary);
      border-radius: 100px;
      padding: 10px 22px;
      font-weight: 500;
      margin-right: 10px;
      transition: all 0.3s ease;
    }

    .scenario-tabs .nav-pills .nav-link.active {
      background: linear-gradient(135deg, rgba(46, 107, 230, 0.3), rgba(62, 198, 224, 0.25));
      border-color: rgba(94, 234, 212, 0.5);
      color: #fff;
      box-shadow: 0 0 16px rgba(62, 198, 224, 0.25);
    }

    .scenario-tabs .nav-pills .nav-link:hover {
      border-color: var(--accent-neon);
      color: var(--text-primary);
    }

    .scenario-panel {
      background: var(--surface-glass);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-lg);
      padding: 24px;
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      min-height: 150px;
    }

    .scenario-panel h3 {
      font-size: 18px;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 10px;
    }

    .scenario-panel p {
      color: var(--text-secondary);
      font-size: 14px;
      line-height: 1.8;
      margin-bottom: 0;
    }

    /* ============ Recommended List ============ */
    .recommend-item {
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 16px 18px;
      background: var(--surface-glass);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      transition: all 0.3s ease;
      margin-bottom: 12px;
    }

    .recommend-item:hover {
      background: var(--surface-glass-hover);
      border-color: var(--border-glass-strong);
      transform: translateX(6px);
    }

    .recommend-icon {
      width: 42px;
      height: 42px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(46, 107, 230, 0.4), rgba(62, 198, 224, 0.3));
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-neon);
      font-size: 18px;
      flex-shrink: 0;
    }

    .recommend-content h4 {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 4px;
    }

    .recommend-content p {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 0;
    }

    /* ============ Subscribe Form ============ */
    .subscribe-form .form-control {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid var(--border-glass);
      border-radius: 12px;
      color: var(--text-primary);
      padding: 12px 16px;
      font-size: 14px;
      transition: all 0.3s ease;
    }

    .subscribe-form .form-control::placeholder {
      color: var(--text-muted);
    }

    .subscribe-form .form-control:focus {
      background: rgba(255, 255, 255, 0.08);
      border-color: var(--accent-neon);
      box-shadow: 0 0 0 4px rgba(94, 234, 212, 0.12);
    }

    .btn-glow {
      background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
      border: none;
      color: #fff;
      padding: 12px 28px;
      border-radius: 12px;
      font-weight: 600;
      letter-spacing: 0.3px;
      box-shadow: 0 0 18px rgba(62, 198, 224, 0.45);
      transition: all 0.3s ease;
    }

    .btn-glow:hover {
      background: linear-gradient(135deg, #3E7BFF, #4DD6E8);
      box-shadow: 0 0 28px rgba(62, 198, 224, 0.75);
      color: #fff;
      transform: translateY(-2px);
    }

    /* ============ FAQ Accordion ============ */
    .accordion-custom .accordion-item {
      background: var(--surface-glass);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md) !important;
      margin-bottom: 12px;
      overflow: hidden;
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
    }

    .accordion-custom .accordion-button {
      background: transparent;
      color: var(--text-primary);
      font-weight: 600;
      font-size: 15px;
      padding: 18px 20px;
      border: none;
      box-shadow: none;
      transition: all 0.3s ease;
    }

    .accordion-custom .accordion-button:not(.collapsed) {
      background: rgba(62, 198, 224, 0.1);
      color: var(--accent-neon);
    }

    .accordion-custom .accordion-button:focus {
      box-shadow: none;
      border-color: var(--accent-neon);
    }

    .accordion-custom .accordion-button::after {
      filter: invert(1);
      opacity: 0.6;
    }

    .accordion-custom .accordion-body {
      background: transparent;
      color: var(--text-secondary);
      font-size: 14px;
      line-height: 1.8;
      padding: 0 20px 18px;
    }

    /* ============ Footer ============ */
    .site-footer {
      background: rgba(10, 20, 40, 0.9);
      border-top: 1px solid var(--border-glass);
      padding: 40px 0 28px;
      margin-top: auto;
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
    }

    .site-footer .footer-brand {
      font-size: 22px;
      font-weight: 700;
      letter-spacing: 2px;
      background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      display: inline-block;
      margin-bottom: 8px;
    }

    .site-footer .footer-copy {
      color: var(--text-muted);
      font-size: 13px;
      line-height: 1.8;
    }

    .site-footer .footer-copy .sep {
      margin: 0 8px;
      color: rgba(255, 255, 255, 0.2);
    }

    .site-footer .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-wrap: wrap;
      gap: 8px 20px;
    }

    .site-footer .footer-links li a {
      color: var(--text-secondary);
      font-size: 13px;
      transition: color 0.25s ease;
    }

    .site-footer .footer-links li a:hover {
      color: var(--accent-neon);
    }

    /* ============ Responsive ============ */
    @media (max-width: 991.98px) {
      .sidebar-nav {
        transform: translateX(-100%);
        width: 260px;
        box-shadow: 8px 0 30px rgba(0, 0, 0, 0.5);
      }

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

      .main-content {
        margin-left: 0;
      }

      .mobile-topbar {
        display: flex;
      }

      .container-custom {
        padding: 0 16px;
      }

      .page-header h1 {
        font-size: 27px;
      }

      .section-title {
        font-size: 20px;
      }

      .section-block {
        padding: 36px 0;
      }
    }

    @media (max-width: 576px) {
      .page-header {
        padding: 44px 0 28px;
      }

      .page-header h1 {
        font-size: 23px;
      }

      .glass-card,
      .step-card,
      .article-card,
      .scenario-panel {
        border-radius: var(--radius-md);
      }

      .article-card img {
        height: 150px;
      }

      .term-tag {
        padding: 8px 14px;
        font-size: 12px;
      }

      .scenario-tabs .nav-pills .nav-link {
        padding: 8px 16px;
        font-size: 13px;
        margin-right: 6px;
      }

      .recommend-item {
        padding: 12px 14px;
        gap: 12px;
      }

      .recommend-icon {
        width: 36px;
        height: 36px;
        font-size: 16px;
      }
    }

/* roulang page: category4 */
:root {
            --bg-900: #0A1428;
            --bg-800: #0D1A36;
            --bg-700: #0F1D3A;
            --surface-glass: rgba(255, 255, 255, 0.06);
            --surface-glass-hover: rgba(255, 255, 255, 0.11);
            --border-glass: rgba(255, 255, 255, 0.15);
            --border-glass-strong: rgba(255, 255, 255, 0.24);
            --text-primary: #F5F8FE;
            --text-secondary: #B8C5DB;
            --text-muted: #8A9AB5;
            --accent-blue: #2E6BE6;
            --accent-cyan: #3EC6E0;
            --accent-neon: #5EEAD4;
            --accent-indigo: #6366F1;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --shadow-glow: 0 0 18px rgba(62, 198, 224, 0.6);
            --shadow-glow-lg: 0 0 32px rgba(62, 198, 224, 0.75);
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
            --spacing-section: 72px;
            --spacing-section-mobile: 48px;
            --nav-width: 240px;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', Arial, sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-900);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            overflow-x: hidden;
            background-image: radial-gradient(ellipse at 30% 10%, rgba(46, 107, 230, 0.12) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 85%, rgba(62, 198, 224, 0.08) 0%, transparent 50%);
            background-attachment: fixed;
        }

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

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease;
        }

        a:hover {
            color: var(--accent-neon);
        }

        button,
        .btn {
            transition: all 0.3s ease;
            font-family: var(--font-sans);
        }

        button:focus-visible,
        .btn:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-neon);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ============ App Shell Navigation ============ */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .sidebar-nav {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--nav-width);
            background: rgba(10, 20, 40, 0.82);
            backdrop-filter: blur(22px);
            -webkit-backdrop-filter: blur(22px);
            border-right: 1px solid var(--border-glass);
            z-index: 1040;
            display: flex;
            flex-direction: column;
            padding: 24px 16px;
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .sidebar-logo {
            text-align: center;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 18px;
        }

        .sidebar-logo a {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--text-primary);
            background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
        }

        .sidebar-logo a:hover {
            filter: brightness(1.2);
        }

        .sidebar-nav-list {
            list-style: none;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 0;
            margin: 0;
        }

        .sidebar-nav-list li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.28s ease;
            border: 1px solid transparent;
            position: relative;
        }

        .sidebar-nav-list li a i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--text-muted);
            transition: color 0.28s ease;
        }

        .sidebar-nav-list li a:hover {
            background: var(--surface-glass);
            color: var(--text-primary);
            border-color: rgba(255, 255, 255, 0.08);
        }

        .sidebar-nav-list li a:hover i {
            color: var(--accent-neon);
        }

        .sidebar-nav-list li a.active {
            background: linear-gradient(135deg, rgba(46, 107, 230, 0.25), rgba(62, 198, 224, 0.2));
            color: #fff;
            border-color: rgba(94, 234, 212, 0.4);
            box-shadow: 0 0 18px rgba(62, 198, 224, 0.2);
        }

        .sidebar-nav-list li a.active i {
            color: var(--accent-neon);
        }

        .sidebar-nav-list li a.active::after {
            content: '';
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-neon);
            box-shadow: 0 0 8px var(--accent-neon);
        }

        .sidebar-footer {
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
            line-height: 1.6;
        }

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

        /* ============ Mobile Top Bar ============ */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: rgba(10, 20, 40, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glass);
            z-index: 1035;
            align-items: center;
            padding: 0 16px;
            gap: 12px;
        }

        .mobile-topbar .hamburger {
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 22px;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
        }

        .mobile-topbar .mobile-logo {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 1px;
            background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 1038;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .sidebar-overlay.show {
            opacity: 1;
        }

        /* ============ Container ============ */
        .container-custom {
            width: 100%;
            max-width: 1120px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ============ Section ============ */
        .section-pad {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }

        .section-pad-sm {
            padding-top: 40px;
            padding-bottom: 40px;
        }

        .section-label {
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--accent-neon);
            margin-bottom: 8px;
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.85;
        }

        /* ============ Glass Card ============ */
        .glass-card {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 24px;
            transition: all 0.35s ease;
        }

        .glass-card:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45), 0 0 20px rgba(62, 198, 224, 0.15);
            transform: translateY(-3px);
        }

        .glass-card-flat {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            padding: 20px;
            transition: all 0.35s ease;
        }

        .glass-card-flat:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
        }

        /* ============ Buttons ============ */
        .btn-glow {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 14px;
            box-shadow: var(--shadow-glow);
            transition: all 0.35s ease;
            letter-spacing: 0.5px;
        }

        .btn-glow:hover {
            box-shadow: var(--shadow-glow-lg);
            transform: translateY(-2px);
            color: #fff;
            filter: brightness(1.1);
        }

        .btn-outline-glass {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-glass-strong);
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 14px;
            transition: all 0.35s ease;
            letter-spacing: 0.5px;
        }

        .btn-outline-glass:hover {
            background: var(--surface-glass);
            border-color: var(--accent-cyan);
            color: var(--accent-neon);
            transform: translateY(-2px);
        }

        .btn-read-more {
            color: var(--accent-cyan);
            font-weight: 500;
            font-size: 14px;
            transition: all 0.3s ease;
            cursor: pointer;
            background: none;
            border: none;
            padding: 0;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .btn-read-more:hover {
            color: var(--accent-neon);
        }

        /* ============ Breadcrumb ============ */
        .breadcrumb-wrap {
            padding: 24px 0 0;
            font-size: 13px;
            color: var(--text-muted);
        }

        .breadcrumb-wrap a {
            color: var(--text-muted);
        }

        .breadcrumb-wrap a:hover {
            color: var(--accent-neon);
        }

        .breadcrumb-wrap .separator {
            margin: 0 8px;
        }

        /* ============ Hero / Page Header ============ */
        .page-header {
            padding: 48px 0 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: relative;
        }

        .page-header::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 120px;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-neon));
            border-radius: 2px;
        }

        .page-header h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .page-header .lead {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.85;
        }

        /* ============ Featured News ============ */
        .featured-news-card {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-glass);
            background: var(--bg-800);
            min-height: 380px;
            display: flex;
            align-items: flex-end;
        }

        .featured-news-card .featured-img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.6;
            transition: transform 0.5s ease, opacity 0.5s ease;
        }

        .featured-news-card:hover .featured-img {
            transform: scale(1.03);
            opacity: 0.7;
        }

        .featured-news-card .featured-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 20, 40, 0.95) 0%, rgba(10, 20, 40, 0.5) 50%, rgba(10, 20, 40, 0.15) 100%);
        }

        .featured-news-content {
            position: relative;
            z-index: 2;
            padding: 36px;
            width: 100%;
        }

        .featured-news-tag {
            display: inline-block;
            background: rgba(94, 234, 212, 0.2);
            color: var(--accent-neon);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            border: 1px solid rgba(94, 234, 212, 0.35);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .featured-news-title {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .featured-news-excerpt {
            font-size: 14px;
            color: rgba(245, 248, 254, 0.8);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 14px;
        }

        .featured-news-meta {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ============ News List ============ */
        .news-list-item {
            display: flex;
            gap: 20px;
            padding: 20px;
            border-radius: var(--radius-lg);
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            transition: all 0.35s ease;
            margin-bottom: 16px;
            align-items: center;
        }

        .news-list-item:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
            transform: translateX(4px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35), 0 0 16px rgba(62, 198, 224, 0.12);
        }

        .news-list-thumb {
            flex-shrink: 0;
            width: 120px;
            height: 80px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            border: 1px solid var(--border-glass);
        }

        .news-list-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .news-list-item:hover .news-list-thumb img {
            transform: scale(1.06);
        }

        .news-list-body {
            flex: 1;
            min-width: 0;
        }

        .news-list-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.5;
            transition: color 0.3s ease;
        }

        .news-list-item:hover .news-list-title {
            color: var(--accent-neon);
        }

        .news-list-excerpt {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-list-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .news-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 500;
            padding: 3px 12px;
            border-radius: 14px;
            background: rgba(46, 107, 230, 0.2);
            color: #8ab4ff;
            border: 1px solid rgba(46, 107, 230, 0.3);
        }

        /* ============ Tag Cloud ============ */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            padding: 8px 0;
        }

        .tag-cloud-item {
            display: inline-block;
            padding: 8px 18px;
            border-radius: 24px;
            font-size: 13px;
            font-weight: 500;
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            color: var(--text-secondary);
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .tag-cloud-item:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-neon);
            background: var(--surface-glass-hover);
            box-shadow: 0 0 14px rgba(62, 198, 224, 0.25);
        }

        .tag-cloud-item.active {
            border-color: var(--accent-neon);
            color: var(--accent-neon);
            background: rgba(94, 234, 212, 0.12);
        }

        /* ============ Timeline ============ */
        .timeline {
            position: relative;
            padding-left: 28px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 10px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--accent-blue), var(--accent-cyan), transparent);
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            padding-bottom: 24px;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -24px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent-cyan);
            border: 2px solid var(--bg-900);
            box-shadow: 0 0 12px rgba(62, 198, 224, 0.6);
        }

        .timeline-date {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-neon);
            letter-spacing: 0.5px;
            margin-bottom: 4px;
        }

        .timeline-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .timeline-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ============ Subscribe Form ============ */
        .subscribe-form .form-control {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-glass);
            color: var(--text-primary);
            padding: 12px 18px;
            border-radius: var(--radius-md);
            font-size: 14px;
            transition: all 0.3s ease;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .subscribe-form .form-control::placeholder {
            color: var(--text-muted);
        }

        .subscribe-form .form-control:focus {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(62, 198, 224, 0.15), 0 0 18px rgba(62, 198, 224, 0.25);
            color: var(--text-primary);
        }

        /* ============ FAQ Accordion ============ */
        .accordion-custom .accordion-item {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            transition: all 0.3s ease;
        }

        .accordion-custom .accordion-item:hover {
            border-color: var(--border-glass-strong);
            background: var(--surface-glass-hover);
        }

        .accordion-custom .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 15px;
            padding: 18px 22px;
            box-shadow: none;
            border: none;
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(46, 107, 230, 0.15);
            color: var(--accent-neon);
            box-shadow: none;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }

        .accordion-custom .accordion-button::after {
            filter: invert(1) brightness(0.7);
            background-size: 16px;
        }

        .accordion-custom .accordion-body {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.85;
            padding: 4px 22px 20px;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: rgba(10, 20, 40, 0.9);
            border-top: 1px solid var(--border-glass);
            padding: 40px 0 30px;
            margin-top: auto;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 1px;
            background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 6px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            color: var(--text-muted);
            font-size: 13px;
            transition: color 0.3s ease;
        }

        .footer-links a:hover {
            color: var(--accent-neon);
        }

        .footer-copy {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .footer-copy .sep {
            margin: 0 8px;
            opacity: 0.5;
        }

        /* ============ Responsive ============ */
        @media (max-width: 991.98px) {
            :root {
                --spacing-section: 56px;
                --spacing-section-mobile: 40px;
            }

            .sidebar-nav {
                transform: translateX(-100%);
                width: 260px;
                border-right: 1px solid var(--border-glass-strong);
            }

            .sidebar-nav.show {
                transform: translateX(0);
                box-shadow: 8px 0 40px rgba(0, 0, 0, 0.5);
            }

            .sidebar-overlay {
                display: block;
                pointer-events: none;
            }

            .sidebar-overlay.show {
                pointer-events: auto;
            }

            .mobile-topbar {
                display: flex;
            }

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

            .container-custom {
                padding-left: 18px;
                padding-right: 18px;
            }

            .page-header h1 {
                font-size: 28px;
            }

            .featured-news-card {
                min-height: 300px;
            }

            .featured-news-content {
                padding: 24px;
            }

            .featured-news-title {
                font-size: 20px;
            }

            .news-list-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .news-list-thumb {
                width: 100%;
                height: 180px;
            }

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

        @media (max-width: 767.98px) {
            :root {
                --spacing-section: 40px;
                --spacing-section-mobile: 32px;
            }

            .page-header h1 {
                font-size: 24px;
            }

            .featured-news-card {
                min-height: 260px;
            }

            .featured-news-title {
                font-size: 18px;
            }

            .featured-news-content {
                padding: 18px;
            }

            .featured-news-excerpt {
                font-size: 13px;
                -webkit-line-clamp: 3;
                display: -webkit-box;
                -webkit-box-orient: vertical;
                overflow: hidden;
            }

            .news-list-thumb {
                height: 160px;
            }

            .footer-copy .sep {
                margin: 0 4px;
            }

            .footer-links {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 6px 16px;
            }

            .footer-links.justify-content-md-end {
                justify-content: flex-start !important;
            }
        }

        @media (max-width: 575.98px) {
            .page-header h1 {
                font-size: 22px;
            }

            .section-title {
                font-size: 20px;
            }

            .featured-news-card {
                min-height: 220px;
            }

            .featured-news-content {
                padding: 14px;
            }

            .featured-news-title {
                font-size: 16px;
            }

            .news-list-thumb {
                height: 140px;
            }

            .tag-cloud-item {
                font-size: 12px;
                padding: 6px 14px;
            }

            .timeline {
                padding-left: 22px;
            }

            .timeline-item::before {
                left: -18px;
                width: 10px;
                height: 10px;
            }
        }

/* roulang page: category5 */
:root {
            --bg-900: #0A1428;
            --bg-800: #0D1A36;
            --bg-700: #0F1D3A;
            --surface-glass: rgba(255, 255, 255, 0.06);
            --surface-glass-hover: rgba(255, 255, 255, 0.11);
            --border-glass: rgba(255, 255, 255, 0.15);
            --border-glass-strong: rgba(255, 255, 255, 0.24);
            --text-primary: #F5F8FE;
            --text-secondary: #B8C5DB;
            --text-muted: #8A9AB5;
            --accent-blue: #2E6BE6;
            --accent-cyan: #3EC6E0;
            --accent-neon: #5EEAD4;
            --accent-indigo: #6366F1;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --shadow-glow: 0 0 18px rgba(62, 198, 224, 0.6);
            --shadow-glow-lg: 0 0 32px rgba(62, 198, 224, 0.75);
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
            --spacing-section: 72px;
            --spacing-section-mobile: 48px;
            --nav-width: 240px;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', Arial, sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-900);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease;
        }

        a:hover {
            color: var(--accent-neon);
        }

        button,
        .btn {
            transition: all 0.3s ease;
            font-family: var(--font-sans);
        }

        button:focus-visible,
        .btn:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-neon);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ============ App Shell Navigation ============ */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .sidebar-nav {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--nav-width);
            background: rgba(10, 20, 40, 0.82);
            backdrop-filter: blur(22px);
            -webkit-backdrop-filter: blur(22px);
            border-right: 1px solid var(--border-glass);
            z-index: 1040;
            display: flex;
            flex-direction: column;
            padding: 24px 16px;
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .sidebar-logo {
            text-align: center;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 18px;
        }

        .sidebar-logo a {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--text-primary);
            background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
        }

        .sidebar-logo a:hover {
            filter: brightness(1.2);
        }

        .sidebar-nav-list {
            list-style: none;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 0;
            margin: 0;
        }

        .sidebar-nav-list li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.28s ease;
            border: 1px solid transparent;
            position: relative;
        }

        .sidebar-nav-list li a i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--text-muted);
            transition: color 0.28s ease;
        }

        .sidebar-nav-list li a:hover {
            background: var(--surface-glass);
            color: var(--text-primary);
            border-color: rgba(255, 255, 255, 0.08);
        }

        .sidebar-nav-list li a:hover i {
            color: var(--accent-neon);
        }

        .sidebar-nav-list li a.active {
            background: linear-gradient(135deg, rgba(46, 107, 230, 0.25), rgba(62, 198, 224, 0.2));
            color: #fff;
            border-color: rgba(94, 234, 212, 0.4);
            box-shadow: 0 0 18px rgba(62, 198, 224, 0.2);
        }

        .sidebar-nav-list li a.active i {
            color: var(--accent-neon);
        }

        .sidebar-nav-list li a.active::after {
            content: '';
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-neon);
            box-shadow: 0 0 8px var(--accent-neon);
        }

        .sidebar-footer {
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
            line-height: 1.6;
        }

        .main-content {
            flex: 1;
            margin-left: var(--nav-width);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
            width: calc(100% - var(--nav-width));
        }

        /* ============ Mobile Top Bar ============ */
        .mobile-topbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: rgba(10, 20, 40, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glass);
            z-index: 1052;
            display: none;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
        }

        .mobile-topbar-logo {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 1.5px;
            color: var(--text-primary);
            background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .mobile-toggle {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            color: var(--text-primary);
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 18px;
            transition: all 0.3s ease;
        }

        .mobile-toggle:hover {
            background: var(--surface-glass-hover);
            box-shadow: 0 0 12px rgba(62, 198, 224, 0.3);
        }

        .sidebar-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 1045;
            opacity: 0;
            visibility: hidden;
            transition: all 0.35s ease;
        }

        .sidebar-overlay.show {
            opacity: 1;
            visibility: visible;
        }

        /* ============ Container Custom ============ */
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ============ Breadcrumb ============ */
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 16px 0 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb-custom a {
            color: var(--text-muted);
            transition: color 0.25s ease;
        }

        .breadcrumb-custom a:hover {
            color: var(--accent-neon);
        }

        .breadcrumb-custom .separator {
            color: var(--text-muted);
            opacity: 0.5;
        }

        .breadcrumb-custom .current {
            color: var(--accent-cyan);
        }

        /* ============ Section Base ============ */
        .section-block {
            padding: var(--spacing-section) 0;
        }

        .section-block-alt {
            padding: var(--spacing-section) 0;
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--accent-neon);
            margin-bottom: 12px;
        }

        .section-label::before {
            content: '';
            width: 24px;
            height: 1px;
            background: var(--accent-neon);
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.38;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 720px;
        }

        /* ============ Page Header ============ */
        .page-header {
            padding: 48px 0 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            background: linear-gradient(180deg, rgba(46, 107, 230, 0.12) 0%, rgba(10, 20, 40, 0) 100%);
        }

        .page-header h1 {
            font-size: 34px;
            font-weight: 700;
            letter-spacing: 1px;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .page-header .lead {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 680px;
        }

        /* ============ Glass Card ============ */
        .glass-card {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .glass-card:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
            transform: translateY(-4px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45), 0 0 18px rgba(62, 198, 224, 0.25);
        }

        /* ============ Buttons ============ */
        .btn-glow {
            background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
            color: #fff;
            border: none;
            border-radius: var(--radius-md);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.5px;
            box-shadow: var(--shadow-glow);
            transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-glow:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow-lg);
            filter: brightness(1.1);
        }

        .btn-glow:active {
            transform: translateY(0);
            box-shadow: var(--shadow-glow);
        }

        .btn-glass {
            background: var(--surface-glass);
            color: var(--text-primary);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 11px 26px;
            font-size: 15px;
            font-weight: 500;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-glass:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
            color: var(--text-primary);
            box-shadow: 0 0 14px rgba(62, 198, 224, 0.25);
            transform: translateY(-2px);
        }

        /* ============ Pricing Cards ============ */
        .pricing-card {
            background: var(--surface-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: var(--shadow-card);
            position: relative;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .pricing-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-glass-strong);
            background: var(--surface-glass-hover);
        }

        .pricing-card.featured {
            background: linear-gradient(135deg, rgba(46, 107, 230, 0.22), rgba(62, 198, 224, 0.16));
            border-color: rgba(94, 234, 212, 0.55);
            box-shadow: 0 0 32px rgba(62, 198, 224, 0.35), var(--shadow-card);
            transform: scale(1.03);
        }

        .pricing-card.featured:hover {
            transform: scale(1.03) translateY(-4px);
            box-shadow: 0 0 40px rgba(62, 198, 224, 0.5), var(--shadow-card);
        }

        .pricing-badge {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-neon), var(--accent-cyan));
            color: var(--bg-900);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .pricing-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .pricing-price {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            margin-bottom: 4px;
        }

        .pricing-price .currency {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-secondary);
            vertical-align: top;
            margin-right: 2px;
        }

        .pricing-price .period {
            font-size: 14px;
            font-weight: 400;
            color: var(--text-muted);
            margin-left: 4px;
        }

        .pricing-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .pricing-features {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
            flex: 1;
        }

        .pricing-features li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 6px 0;
            line-height: 1.6;
        }

        .pricing-features li i {
            color: var(--accent-neon);
            font-size: 14px;
            margin-top: 3px;
            flex-shrink: 0;
        }

        .pricing-features li.muted {
            opacity: 0.6;
        }

        .pricing-features li.muted i {
            color: var(--text-muted);
        }

        /* ============ Benefit List ============ */
        .benefit-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 16px;
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            transition: all 0.3s ease;
            height: 100%;
        }

        .benefit-item:hover {
            background: var(--surface-glass-hover);
            border-color: var(--border-glass-strong);
            box-shadow: 0 0 14px rgba(62, 198, 224, 0.2);
        }

        .benefit-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, rgba(46, 107, 230, 0.35), rgba(62, 198, 224, 0.25));
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 18px;
            color: var(--accent-neon);
            border: 1px solid rgba(94, 234, 212, 0.3);
        }

        .benefit-item h3 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .benefit-item p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        /* ============ Steps ============ */
        .step-item {
            text-align: center;
            padding: 20px 16px;
            position: relative;
        }

        .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            box-shadow: var(--shadow-glow);
            border: 2px solid rgba(94, 234, 212, 0.5);
        }

        .step-item h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .step-item p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        .step-connector {
            position: absolute;
            top: 42px;
            right: -50%;
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, rgba(62, 198, 224, 0.5), rgba(62, 198, 224, 0.05));
        }

        /* ============ FAQ Accordion ============ */
        .accordion-custom .accordion-item {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }

        .accordion-custom .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 15px;
            padding: 18px 20px;
            border: none;
            box-shadow: none;
            transition: all 0.3s ease;
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(62, 198, 224, 0.08);
            color: var(--accent-neon);
            box-shadow: none;
        }

        .accordion-custom .accordion-button::after {
            filter: invert(1) sepia(0.4) saturate(3) hue-rotate(130deg);
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 2px rgba(62, 198, 224, 0.3);
        }

        .accordion-custom .accordion-body {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
            padding: 8px 20px 20px;
        }

        /* ============ CTA Section ============ */
        .cta-section {
            background: linear-gradient(135deg, rgba(46, 107, 230, 0.18) 0%, rgba(10, 20, 40, 0.6) 50%, rgba(62, 198, 224, 0.15) 100%);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 56px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(62, 198, 224, 0.25) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            position: relative;
        }

        .cta-section p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 20px;
            position: relative;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: rgba(8, 16, 32, 0.92);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 40px 0 28px;
            color: var(--text-muted);
            font-size: 13px;
        }

        .footer-brand {
            font-size: 22px;
            font-weight: 700;
            letter-spacing: 1.5px;
            color: var(--text-primary);
            background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
            margin-bottom: 6px;
        }

        .footer-copy {
            line-height: 1.7;
            color: var(--text-muted);
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .footer-links a {
            color: var(--text-muted);
            font-size: 13px;
            transition: color 0.25s ease;
        }

        .footer-links a:hover {
            color: var(--accent-neon);
        }

        .footer-links .sep {
            color: rgba(255, 255, 255, 0.15);
            padding: 0 4px;
        }

        .footer-sep {
            color: rgba(255, 255, 255, 0.2);
            padding: 0 6px;
        }

        /* ============ Image Card ============ */
        .image-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            background: var(--surface-glass);
            position: relative;
        }

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

        .image-card .overlay-text {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 16px;
            background: linear-gradient(transparent, rgba(10, 20, 40, 0.9));
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ============ Tag ============ */
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(62, 198, 224, 0.15);
            color: var(--accent-neon);
            border: 1px solid rgba(94, 234, 212, 0.25);
            margin-right: 6px;
            margin-bottom: 6px;
        }

        /* ============ Responsive ============ */
        @media (max-width: 991.98px) {
            :root {
                --nav-width: 0px;
            }

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

            .sidebar-nav {
                transform: translateX(-100%);
                width: 260px;
                position: fixed;
                left: 0;
                top: 0;
                bottom: 0;
                z-index: 1050;
                background: rgba(10, 20, 40, 0.96);
            }

            .sidebar-nav.show {
                transform: translateX(0);
                box-shadow: 0 0 32px rgba(0, 0, 0, 0.6);
            }

            .mobile-topbar {
                display: flex;
            }

            .container-custom {
                padding: 0 20px;
            }

            .section-block,
            .section-block-alt {
                padding: var(--spacing-section-mobile) 0;
            }

            .page-header {
                padding: 32px 0 24px;
            }

            .page-header h1 {
                font-size: 26px;
            }

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

            .pricing-card.featured {
                transform: scale(1);
            }

            .pricing-card.featured:hover {
                transform: translateY(-4px);
            }

            .step-connector {
                display: none;
            }
        }

        @media (max-width: 575.98px) {
            .container-custom {
                padding: 0 16px;
            }

            .page-header h1 {
                font-size: 22px;
            }

            .section-title {
                font-size: 19px;
            }

            .pricing-price {
                font-size: 28px;
            }

            .glass-card {
                padding: 18px;
            }

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

            .cta-section {
                padding: 40px 0;
            }

            .cta-section h2 {
                font-size: 20px;
            }

            .site-footer {
                padding: 32px 0 20px;
            }
        }

        @media (min-width: 576px) and (max-width: 767.98px) {
            .container-custom {
                padding: 0 20px;
            }
        }

/* roulang page: category6 */
:root {
            --bg-900: #0A1428;
            --bg-800: #0D1A36;
            --bg-700: #0F1D3A;
            --surface-glass: rgba(255, 255, 255, 0.06);
            --surface-glass-hover: rgba(255, 255, 255, 0.11);
            --border-glass: rgba(255, 255, 255, 0.15);
            --border-glass-strong: rgba(255, 255, 255, 0.24);
            --text-primary: #F5F8FE;
            --text-secondary: #B8C5DB;
            --text-muted: #8A9AB5;
            --accent-blue: #2E6BE6;
            --accent-cyan: #3EC6E0;
            --accent-neon: #5EEAD4;
            --accent-indigo: #6366F1;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --shadow-glow: 0 0 18px rgba(62, 198, 224, 0.6);
            --shadow-glow-lg: 0 0 32px rgba(62, 198, 224, 0.75);
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
            --spacing-section: 72px;
            --spacing-section-mobile: 48px;
            --nav-width: 240px;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', Arial, sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-900);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            overflow-x: hidden;
            background: linear-gradient(180deg, #0A1428 0%, #0D1A36 40%, #0A1428 100%);
            background-attachment: fixed;
        }

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

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease;
        }

        a:hover {
            color: var(--accent-neon);
        }

        button,
        .btn {
            transition: all 0.3s ease;
            font-family: var(--font-sans);
        }

        button:focus-visible,
        .btn:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-neon);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        .sidebar-nav {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--nav-width);
            background: rgba(10, 20, 40, 0.82);
            backdrop-filter: blur(22px);
            -webkit-backdrop-filter: blur(22px);
            border-right: 1px solid var(--border-glass);
            z-index: 1040;
            display: flex;
            flex-direction: column;
            padding: 24px 16px;
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .sidebar-logo {
            text-align: center;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 18px;
        }

        .sidebar-logo a {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--text-primary);
            background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
        }

        .sidebar-logo a:hover {
            filter: brightness(1.2);
        }

        .sidebar-nav-list {
            list-style: none;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding-left: 0;
        }

        .sidebar-nav-list li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.28s ease;
            border: 1px solid transparent;
            position: relative;
        }

        .sidebar-nav-list li a i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--text-muted);
            transition: color 0.28s ease;
        }

        .sidebar-nav-list li a:hover {
            background: var(--surface-glass);
            color: var(--text-primary);
            border-color: rgba(255, 255, 255, 0.08);
        }

        .sidebar-nav-list li a:hover i {
            color: var(--accent-neon);
        }

        .sidebar-nav-list li a.active {
            background: linear-gradient(135deg, rgba(46, 107, 230, 0.25), rgba(62, 198, 224, 0.2));
            color: #fff;
            border-color: rgba(94, 234, 212, 0.4);
            box-shadow: 0 0 18px rgba(62, 198, 224, 0.2);
        }

        .sidebar-nav-list li a.active i {
            color: var(--accent-neon);
        }

        .sidebar-nav-list li a.active::after {
            content: '';
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-neon);
            box-shadow: 0 0 8px var(--accent-neon);
        }

        .sidebar-footer {
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
            line-height: 1.6;
        }

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

        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: rgba(10, 20, 40, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            z-index: 1050;
            align-items: center;
            padding: 0 16px;
            justify-content: space-between;
        }

        .mobile-header .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            border-radius: 8px;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }

        .mobile-header .navbar-brand {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 1.5px;
            background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 1030;
            backdrop-filter: blur(4px);
        }

        .breadcrumb-section {
            padding: 24px 0 0;
        }

        .breadcrumb-help {
            margin-bottom: 0;
            font-size: 13px;
            color: var(--text-muted);
            background: transparent;
        }

        .breadcrumb-help .breadcrumb-item a {
            color: var(--accent-cyan);
        }

        .breadcrumb-help .breadcrumb-item.active {
            color: var(--text-secondary);
        }

        .help-hero {
            padding: 40px 0 0;
            position: relative;
        }

        .help-hero .page-title {
            font-size: 36px;
            font-weight: 700;
            letter-spacing: 1px;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .help-hero .page-intro {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 760px;
            margin-bottom: 32px;
        }

        .section-help {
            padding: var(--spacing-section) 0;
        }

        .section-help .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .section-help .section-title i {
            color: var(--accent-neon);
            font-size: 22px;
        }

        .search-box {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 32px;
            display: flex;
            flex-direction: column;
            gap: 16px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
        }

        .search-box .input-group {
            border-radius: var(--radius-md);
            overflow: hidden;
        }

        .search-box .form-control {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: var(--text-primary);
            padding: 14px 18px;
            font-size: 15px;
            border-radius: var(--radius-md) 0 0 var(--radius-md);
            box-shadow: none;
            transition: all 0.3s ease;
        }

        .search-box .form-control::placeholder {
            color: var(--text-muted);
        }

        .search-box .form-control:focus {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--accent-neon);
            box-shadow: 0 0 0 3px rgba(94, 234, 212, 0.15);
        }

        .search-box .btn-search {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: #fff;
            font-weight: 600;
            padding: 0 24px;
            box-shadow: var(--shadow-glow);
            font-size: 15px;
        }

        .search-box .btn-search:hover {
            filter: brightness(1.15);
            box-shadow: var(--shadow-glow-lg);
            transform: translateY(-1px);
        }

        .search-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }

        .search-tags span {
            font-size: 13px;
            color: var(--text-muted);
        }

        .search-tags a {
            font-size: 13px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            padding: 6px 14px;
            border-radius: 20px;
            color: var(--text-secondary);
            transition: all 0.25s ease;
        }

        .search-tags a:hover {
            background: rgba(94, 234, 212, 0.12);
            border-color: rgba(94, 234, 212, 0.4);
            color: var(--accent-neon);
        }

        .help-topic-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .help-topic-card {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 24px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .help-topic-card:hover {
            background: var(--surface-glass-hover);
            border-color: rgba(94, 234, 212, 0.4);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }

        .help-topic-card .topic-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(46,107,230,0.25), rgba(62,198,224,0.2));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent-neon);
            margin-bottom: 16px;
        }

        .help-topic-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .help-topic-card p {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 0;
            flex: 1;
        }

        .help-topic-card a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--accent-cyan);
            margin-top: 16px;
            transition: all 0.25s ease;
        }

        .help-topic-card a:hover {
            color: var(--accent-neon);
        }

        .accordion-help .accordion-item {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            overflow: hidden;
        }

        .accordion-help .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 15px;
            padding: 18px 20px;
            border: none;
            box-shadow: none;
            border-radius: var(--radius-md);
        }

        .accordion-help .accordion-button:not(.collapsed) {
            background: rgba(94, 234, 212, 0.08);
            color: var(--accent-neon);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .accordion-help .accordion-button::after {
            filter: invert(1);
            transition: all 0.3s ease;
        }

        .accordion-help .accordion-button:focus {
            box-shadow: 0 0 0 2px rgba(94, 234, 212, 0.3);
        }

        .accordion-help .accordion-body {
            background: rgba(255, 255, 255, 0.02);
            color: var(--text-secondary);
            font-size: 14px;
            padding: 18px 20px;
            border-radius: 0 0 var(--radius-md) var(--radius-md);
        }

        .help-form-card {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 32px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
        }

        .help-form-card .form-label {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 14px;
            margin-bottom: 8px;
        }

        .help-form-card .form-control,
        .help-form-card .form-select {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: var(--text-primary);
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            transition: all 0.3s ease;
        }

        .help-form-card .form-control:focus,
        .help-form-card .form-select:focus {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--accent-neon);
            box-shadow: 0 0 0 3px rgba(94, 234, 212, 0.15);
        }

        .help-form-card textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }

        .btn-glow {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-glow);
            transition: all 0.3s ease;
            letter-spacing: 0.3px;
        }

        .btn-glow:hover {
            filter: brightness(1.15);
            box-shadow: var(--shadow-glow-lg);
            transform: translateY(-2px);
            color: #fff;
        }

        .service-time-card {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 28px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            height: 100%;
        }

        .service-time-card h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .service-time-card ul {
            list-style: none;
            padding-left: 0;
            margin-bottom: 0;
        }

        .service-time-card ul li {
            font-size: 14px;
            color: var(--text-secondary);
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .service-time-card ul li:last-child {
            border-bottom: none;
        }

        .service-time-card ul li i {
            color: var(--accent-neon);
            width: 18px;
            text-align: center;
            font-size: 14px;
        }

        .doc-list-card {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 24px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            transition: all 0.3s ease;
            height: 100%;
            display: block;
            color: var(--text-primary);
        }

        .doc-list-card:hover {
            background: var(--surface-glass-hover);
            border-color: rgba(94, 234, 212, 0.4);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
            color: var(--text-primary);
        }

        .doc-list-card .doc-icon {
            font-size: 22px;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }

        .doc-list-card h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .doc-list-card p {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        .promise-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .promise-item {
            background: var(--surface-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 24px;
            text-align: center;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            transition: all 0.3s ease;
        }

        .promise-item:hover {
            background: var(--surface-glass-hover);
            border-color: rgba(94, 234, 212, 0.35);
            transform: translateY(-3px);
        }

        .promise-item i {
            font-size: 28px;
            color: var(--accent-neon);
            margin-bottom: 14px;
        }

        .promise-item h5 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .promise-item p {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        .help-cover-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
            margin-bottom: 24px;
        }

        .help-cover-image img {
            width: 100%;
            height: 280px;
            object-fit: cover;
        }

        .site-footer {
            background: rgba(10, 20, 40, 0.8);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 40px 0 32px;
            margin-top: auto;
        }

        .site-footer .footer-brand {
            font-size: 22px;
            font-weight: 700;
            letter-spacing: 2px;
            background: linear-gradient(135deg, #F5F8FE 0%, #5EEAD4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 8px;
        }

        .site-footer .footer-copy {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .site-footer .footer-links {
            list-style: none;
            padding-left: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 0;
        }

        .site-footer .footer-links li a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: all 0.25s ease;
        }

        .site-footer .footer-links li a:hover {
            color: var(--accent-neon);
        }

        .site-footer .sep {
            margin: 0 8px;
            opacity: 0.6;
        }

        .container-custom {
            max-width: 1200px;
            padding: 0 24px;
            margin: 0 auto;
        }

        @media (max-width: 1199px) {
            .help-topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .promise-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 991px) {
            .sidebar-nav {
                transform: translateX(-100%);
                width: 280px;
                padding-top: 80px;
            }
            .sidebar-nav.open {
                transform: translateX(0);
                box-shadow: 12px 0 40px rgba(0, 0, 0, 0.5);
            }
            .main-content {
                margin-left: 0;
                padding-top: 60px;
            }
            .mobile-header {
                display: flex;
            }
            .sidebar-overlay.show {
                display: block;
            }
            .help-hero .page-title {
                font-size: 28px;
            }
            .section-help {
                padding: var(--spacing-section-mobile) 0;
            }
        }

        @media (max-width: 767px) {
            .help-topic-grid {
                grid-template-columns: 1fr;
            }
            .promise-grid {
                grid-template-columns: 1fr;
            }
            .help-hero .page-title {
                font-size: 24px;
            }
            .help-hero .page-intro {
                font-size: 15px;
            }
            .search-box {
                padding: 20px;
            }
            .help-form-card {
                padding: 20px;
            }
            .help-cover-image img {
                height: 200px;
            }
        }

        @media (max-width: 575px) {
            .container-custom {
                padding: 0 16px;
            }
            .help-hero {
                padding-top: 20px;
            }
            .help-topic-grid {
                grid-template-columns: 1fr;
            }
            .promise-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}