/* roulang page: index */
:root {
            --bg-primary: #060C18;
            --bg-secondary: #0A1628;
            --glass-bg: rgba(15, 27, 48, 0.55);
            --glass-border: rgba(255, 255, 255, 0.12);
            --primary: #0EA5E9;
            --secondary: #22D3EE;
            --accent: #F59E0B;
            --success: #10B981;
            --danger: #F43F5E;
            --text-primary: #E2E8F0;
            --text-secondary: #8FA5B9;
            --dark-text: #0F172A;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-badge: 999px;
            --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.35);
            --glow-primary: 0 0 20px rgba(14, 165, 233, 0.45);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Heiti SC", sans-serif;
            background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            color: var(--text-primary);
            line-height: 1.75;
            min-height: 100vh;
            background-image:
                linear-gradient(rgba(14, 165, 233, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(14, 165, 233, 0.04) 1px, transparent 1px);
            background-size: 42px 42px;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: opacity .25s;
        }

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

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

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

        /* ===== Header & Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 52px;
            background: rgba(6, 12, 24, 0.65);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            z-index: 100;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 52px;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--text-primary);
            white-space: nowrap;
        }

        .logo-badge {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: radial-gradient(circle, var(--secondary) 0%, var(--primary) 60%, transparent 70%);
            box-shadow: 0 0 12px rgba(14, 165, 233, 0.6);
            position: relative;
            flex-shrink: 0;
        }

        .logo-badge::after {
            content: '';
            position: absolute;
            top: 3px;
            left: 3px;
            width: 22px;
            height: 22px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            border-left-color: transparent;
        }

        .logo span {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .main-nav {
            display: flex;
            gap: 2px;
            align-items: center;
        }

        .main-nav a {
            padding: 6px 14px;
            border-radius: 8px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            position: relative;
            transition: all .3s;
            font-weight: 500;
        }

        .main-nav a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }

        .main-nav a.active {
            color: var(--secondary);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
            box-shadow: 0 0 10px var(--secondary);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 10px;
            padding: 4px 10px;
            gap: 6px;
            transition: all .3s;
        }

        .search-box:focus-within {
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.2);
            width: 220px;
        }

        .search-box input {
            background: transparent;
            color: var(--text-primary);
            font-size: 0.85rem;
            width: 120px;
            transition: width .3s;
        }

        .search-box input::placeholder {
            color: var(--text-secondary);
        }

        .search-box svg {
            width: 16px;
            height: 16px;
            color: var(--text-secondary);
            flex-shrink: 0;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: var(--dark-text);
            font-weight: 700;
            font-size: 0.9rem;
            padding: 8px 20px;
            border-radius: var(--radius-btn);
            box-shadow: var(--glow-primary);
            transition: all .3s;
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }

        .btn-primary:hover {
            box-shadow: 0 0 28px rgba(14, 165, 233, 0.6);
            transform: translateY(-1px);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--glass-border);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 8px 20px;
            border-radius: var(--radius-btn);
            transition: all .3s;
            cursor: pointer;
        }

        .btn-outline:hover {
            border-color: var(--secondary);
            color: var(--secondary);
            background: rgba(34, 211, 238, 0.08);
        }

        .menu-toggle {
            display: none;
            background: none;
            cursor: pointer;
            padding: 6px;
            color: var(--text-primary);
        }

        .menu-toggle svg {
            width: 24px;
            height: 24px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 160px 0 80px;
            background: linear-gradient(180deg, rgba(6, 12, 24, 0.4), rgba(10, 22, 40, 0.8)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 30%, rgba(34, 211, 238, 0.15), transparent 50%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 55% 45%;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(14, 165, 233, 0.15);
            border: 1px solid rgba(14, 165, 233, 0.35);
            padding: 4px 14px;
            border-radius: var(--radius-badge);
            font-size: 0.8rem;
            color: var(--secondary);
            margin-bottom: 20px;
        }

        .hero-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            background: var(--secondary);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--secondary);
        }

        .hero h1 {
            font-size: clamp(2.25rem, 5vw, 3.6rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .hero h1 .highlight {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .hero-sub {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 420px;
        }

        .hero-cta {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }

        .hero-trust {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        .trust-item svg {
            width: 18px;
            height: 18px;
            color: var(--success);
        }

        .hero-visual {
            position: relative;
            z-index: 2;
        }

        .hero-visual::before,
        .hero-visual::after {
            content: '';
            position: absolute;
            border-radius: 50%;
            border: 2px solid rgba(34, 211, 238, 0.25);
            pointer-events: none;
        }

        .hero-visual::before {
            width: 340px;
            height: 340px;
            top: -60px;
            right: -40px;
            border-top-color: transparent;
            border-right-color: transparent;
            transform: rotate(30deg);
        }

        .hero-visual::after {
            width: 260px;
            height: 260px;
            bottom: -50px;
            left: -20px;
            border-bottom-color: transparent;
            border-left-color: transparent;
            transform: rotate(-20deg);
        }

        .hero-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 20px;
            padding: 16px;
            backdrop-filter: blur(20px);
            box-shadow: var(--shadow-glass);
            position: relative;
        }

        .hero-card img {
            border-radius: 12px;
            width: 100%;
            height: 280px;
            object-fit: cover;
        }

        .hero-card-tag {
            position: absolute;
            top: 28px;
            right: 28px;
            background: linear-gradient(135deg, var(--accent), #D97706);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: var(--radius-badge);
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.4);
        }

        .hero-card-info {
            padding: 14px 6px 6px;
        }

        .hero-card-info h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .hero-card-info p {
            font-size: 0.82rem;
            color: var(--text-secondary);
        }

        /* ===== Section common ===== */
        .section {
            padding: 80px 0;
        }

        .section-head {
            margin-bottom: 48px;
            text-align: center;
        }

        .section-head .tag {
            display: inline-block;
            font-size: 0.8rem;
            color: var(--secondary);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.2);
            padding: 3px 12px;
            border-radius: var(--radius-badge);
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 800;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .section-head p {
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto;
        }

        /* ===== Benefits Ladder ===== */
        .benefits-wrap {
            display: flex;
            align-items: flex-end;
            gap: 16px;
            justify-content: center;
            flex-wrap: nowrap;
        }

        .benefit-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 24px;
            flex: 1;
            max-width: 260px;
            backdrop-filter: blur(12px);
            transition: all .4s;
            position: relative;
        }

        .benefit-card:hover {
            transform: translateY(-6px);
            border-color: rgba(34, 211, 238, 0.4);
            box-shadow: var(--shadow-glass), 0 0 24px rgba(34, 211, 238, 0.15);
        }

        .benefit-card.mid {
            min-height: 320px;
        }

        .benefit-card.high {
            min-height: 380px;
        }

        .benefit-card.max {
            min-height: 440px;
            border-color: rgba(245, 158, 11, 0.4);
            background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(15, 27, 48, 0.7));
        }

        .benefit-card .level {
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--secondary);
            margin-bottom: 10px;
        }

        .benefit-card.max .level {
            color: var(--accent);
        }

        .benefit-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .benefit-card ul {
            list-style: none;
            padding: 0;
        }

        .benefit-card ul li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            padding: 5px 0;
            line-height: 1.5;
        }

        .benefit-card ul li::before {
            content: '✓';
            color: var(--success);
            font-weight: 700;
            flex-shrink: 0;
        }

        .benefit-arrow {
            display: flex;
            align-items: center;
            color: var(--text-secondary);
            font-size: 1.2rem;
            padding: 0 4px;
            align-self: center;
        }

        /* ===== Plans Table ===== */
        .plans-section {
            position: relative;
            background: linear-gradient(180deg, rgba(6, 12, 24, 0.3), rgba(10, 22, 40, 0.6));
        }

        .plans-table {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr 1fr 1fr;
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(16px);
        }

        .plan-col {
            padding: 24px 16px;
            text-align: center;
            position: relative;
        }

        .plan-col:not(:last-child) {
            border-right: 1px solid rgba(255, 255, 255, 0.06);
        }

        .plan-col.featured {
            background: rgba(14, 165, 233, 0.12);
            box-shadow: inset 0 0 0 2px rgba(14, 165, 233, 0.4);
        }

        .plan-feature-label {
            text-align: left;
            font-size: 0.85rem;
            color: var(--text-secondary);
            padding: 12px 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            background: rgba(255, 255, 255, 0.02);
        }

        .plan-top {
            margin-bottom: 16px;
        }

        .plan-top h3 {
            font-size: 1.1rem;
            font-weight: 700;
        }

        .plan-top .badge {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent), #D97706);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 2px 10px;
            border-radius: var(--radius-badge);
            margin-top: 6px;
        }

        .plan-price {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent);
            margin: 12px 0;
        }

        .plan-price small {
            font-size: 0.8rem;
            color: var(--text-secondary);
            font-weight: 400;
        }

        .plan-features {
            list-style: none;
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
            min-height: 140px;
        }

        .plan-features li {
            padding: 4px 0;
        }

        .plan-features li.dim {
            color: rgba(143, 165, 185, 0.4);
        }

        .plans-scroll {
            display: none;
        }

        /* ===== Limited CTA ===== */
        .limited-section {
            position: relative;
            padding: 80px 0;
            background: linear-gradient(135deg, rgba(6, 12, 24, 0.9), rgba(10, 22, 40, 0.85)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat fixed;
            text-align: center;
            overflow: hidden;
        }

        .limited-section::before {
            content: '';
            position: absolute;
            top: -40%;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 400px;
            background: radial-gradient(ellipse, rgba(245, 158, 11, 0.2), transparent 70%);
            pointer-events: none;
            animation: pulse 3s ease-in-out infinite;
        }

        @keyframes pulse {
            0%,
            100% {
                opacity: 0.5;
                transform: translateX(-50%) scale(1);
            }
            50% {
                opacity: 0.9;
                transform: translateX(-50%) scale(1.05);
            }
        }

        .countdown {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin: 28px 0 32px;
        }

        .cd-box {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--glass-border);
            border-radius: 12px;
            padding: 12px 20px;
            min-width: 70px;
            backdrop-filter: blur(10px);
        }

        .cd-box .num {
            font-size: 1.8rem;
            font-weight: 800;
            font-variant-numeric: tabular-nums;
            color: var(--accent);
        }

        .cd-box .label {
            font-size: 0.8rem;
            color: var(--text-secondary);
        }

        /* ===== News List ===== */
        .news-panel {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 32px;
            backdrop-filter: blur(16px);
        }

        .news-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: all .3s;
        }

        .news-item:last-child {
            border-bottom: none;
        }

        .news-item:hover {
            padding-left: 8px;
        }

        .news-thumb {
            width: 120px;
            height: 84px;
            border-radius: 10px;
            object-fit: cover;
            flex-shrink: 0;
            background: rgba(255, 255, 255, 0.06);
        }

        .news-main {
            flex: 1;
        }

        .news-badge {
            display: inline-block;
            font-size: 0.72rem;
            color: var(--secondary);
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.2);
            padding: 1px 10px;
            border-radius: var(--radius-badge);
            margin-bottom: 6px;
        }

        .news-main h3 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .news-main h3 a:hover {
            color: var(--secondary);
        }

        .news-main p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 8px;
            font-size: 0.8rem;
            color: rgba(143, 165, 185, 0.8);
        }

        .news-meta a {
            color: var(--primary);
            font-weight: 500;
        }

        .news-empty {
            border: 2px dashed rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-card);
            padding: 48px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all .3s;
        }

        .faq-item.open {
            border-color: rgba(34, 211, 238, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 0.95rem;
            font-weight: 600;
            gap: 12px;
        }

        .faq-icon {
            width: 20px;
            height: 20px;
            position: relative;
            flex-shrink: 0;
            transition: transform .3s;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--secondary);
            border-radius: 2px;
        }

        .faq-icon::before {
            width: 14px;
            height: 2px;
            top: 9px;
            left: 3px;
        }

        .faq-icon::after {
            width: 2px;
            height: 14px;
            top: 3px;
            left: 9px;
            transition: all .3s;
        }

        .faq-item.open .faq-icon::after {
            transform: scaleY(0);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            padding: 0 24px;
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.8;
            transition: max-height .35s ease, padding .35s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 200px;
            padding: 0 24px 18px;
        }

        /* ===== Contact Form ===== */
        .form-section {
            position: relative;
            background: linear-gradient(180deg, rgba(6, 12, 24, 0.5), rgba(10, 22, 40, 0.7)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
        }

        .form-card {
            max-width: 720px;
            margin: 0 auto;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 20px;
            padding: 40px;
            backdrop-filter: blur(20px);
            box-shadow: var(--shadow-glass);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 6px;
            font-weight: 500;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: var(--radius-btn);
            padding: 10px 14px;
            color: var(--text-primary);
            transition: all .3s;
            font-size: 0.9rem;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.2);
            background: rgba(255, 255, 255, 0.08);
        }

        .form-group select option {
            background: var(--bg-secondary);
            color: var(--text-primary);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 90px;
        }

        .form-success {
            display: none;
            margin-top: 16px;
            padding: 12px 18px;
            background: rgba(16, 185, 129, 0.15);
            border: 1px solid rgba(16, 185, 129, 0.3);
            border-radius: var(--radius-btn);
            color: var(--success);
            font-size: 0.9rem;
            text-align: center;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #04080F;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 60px 0 24px;
            position: relative;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 400px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--secondary), transparent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 1.1rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--text-secondary);
            padding: 4px 0;
            transition: color .3s;
        }

        .footer-col a:hover {
            color: var(--secondary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(143, 165, 185, 0.6);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-visual {
                max-width: 500px;
                margin: 0 auto;
            }

            .benefits-wrap {
                flex-wrap: wrap;
                justify-content: center;
            }

            .benefit-card {
                max-width: 220px;
            }

            .plans-table {
                display: none;
            }

            .plans-scroll {
                display: flex;
                gap: 16px;
                overflow-x: auto;
                padding-bottom: 16px;
                -webkit-overflow-scrolling: touch;
            }

            .plan-scroll-card {
                min-width: 80%;
                background: var(--glass-bg);
                border: 1px solid var(--glass-border);
                border-radius: var(--radius-card);
                padding: 24px;
                backdrop-filter: blur(12px);
                flex-shrink: 0;
            }

            .plan-scroll-card.featured {
                border-color: rgba(14, 165, 233, 0.4);
                background: rgba(14, 165, 233, 0.1);
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: fixed;
                top: 52px;
                right: 0;
                bottom: 0;
                width: 260px;
                background: rgba(6, 12, 24, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: flex-start;
                padding: 32px 24px;
                gap: 16px;
                border-left: 1px solid var(--glass-border);
                z-index: 99;
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav a {
                font-size: 1rem;
                padding: 10px 0;
                width: 100%;
            }

            .menu-toggle {
                display: block;
            }

            .search-box {
                display: none;
            }

            .nav-right .btn-primary {
                padding: 6px 14px;
                font-size: 0.85rem;
            }

            .hero {
                padding: 130px 0 60px;
            }

            .section {
                padding: 56px 0;
            }

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

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

            .footer-bottom {
                font-size: 0.75rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .hero-cta {
                flex-direction: column;
            }

            .hero-cta .btn-primary,
            .hero-cta .btn-outline {
                width: 100%;
            }

            .benefits-wrap {
                flex-direction: column;
                align-items: stretch;
            }

            .benefit-card,
            .benefit-card.mid,
            .benefit-card.high,
            .benefit-card.max {
                max-width: 100%;
                min-height: auto;
            }

            .benefit-arrow {
                transform: rotate(90deg);
                justify-content: center;
                padding: 4px 0;
            }

            .countdown {
                gap: 8px;
            }

            .cd-box {
                padding: 8px 12px;
                min-width: 56px;
            }

            .cd-box .num {
                font-size: 1.2rem;
            }

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

            .news-thumb {
                width: 100%;
                height: 140px;
            }

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

/* roulang page: category1 */
:root {
            --bg-primary: #060C18;
            --bg-secondary: #0A1628;
            --glass-bg: rgba(15, 27, 48, 0.55);
            --glass-border: rgba(255, 255, 255, 0.12);
            --primary: #0EA5E9;
            --accent: #22D3EE;
            --gold: #F59E0B;
            --success: #10B981;
            --danger: #F43F5E;
            --text-main: #E2E8F0;
            --text-sub: #8FA5B9;
            --radius-card: 16px;
            --radius-btn: 10px;
            --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 20px rgba(14, 165, 233, 0.45);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Heiti SC", sans-serif;
            background: linear-gradient(135deg, #060C18 0%, #0A1628 100%);
            color: var(--text-main);
            line-height: 1.75;
            min-height: 100vh;
            background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
            background-size: 32px 32px;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: opacity 0.3s ease;
        }

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

        button,
        input {
            font-family: inherit;
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 52px;
            background: rgba(6, 12, 24, 0.65);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background 0.3s ease;
        }

        .nav-container {
            display: flex;
            align-items: center;
            height: 52px;
            gap: 24px;
            position: relative;
        }

        .site-logo {
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }

        .site-logo i {
            color: var(--accent);
            font-size: 1.3rem;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            min-width: 0;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .main-nav a {
            padding: 8px 14px;
            font-size: 0.9rem;
            color: var(--text-sub);
            border-radius: 99px;
            white-space: nowrap;
            position: relative;
            transition: color 0.3s ease, background 0.3s ease;
        }

        .main-nav a:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.06);
        }

        .main-nav a.active {
            color: var(--accent);
            background: rgba(34, 211, 238, 0.1);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 99px;
            box-shadow: 0 0 8px rgba(34, 211, 238, 0.6);
        }

        .nav-tools {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 99px;
            padding: 6px 12px;
            gap: 8px;
            transition: width 0.3s ease, border-color 0.3s ease;
            width: 160px;
        }

        .search-box:focus-within {
            width: 200px;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
        }

        .search-box input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-main);
            font-size: 0.85rem;
            width: 100%;
        }

        .search-box input::placeholder {
            color: #64748B;
        }

        .search-box i {
            color: var(--text-sub);
            font-size: 0.8rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-size: 0.9rem;
            font-weight: 600;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #0F172A;
            box-shadow: var(--shadow-glow);
        }

        .btn-primary:hover {
            box-shadow: 0 0 28px rgba(14, 165, 233, 0.6);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--glass-border);
            color: var(--text-main);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(34, 211, 238, 0.08);
        }

        .btn-login {
            padding: 7px 16px;
            font-size: 0.85rem;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #0F172A;
            border-radius: 99px;
            font-weight: 700;
            box-shadow: 0 0 14px rgba(14, 165, 233, 0.35);
        }

        .btn-login:hover {
            box-shadow: 0 0 22px rgba(14, 165, 233, 0.55);
            transform: translateY(-1px);
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 1.3rem;
            cursor: pointer;
            padding: 6px;
        }

        /* ========== Page Banner ========== */
        .page-banner {
            position: relative;
            padding: 140px 0 80px;
            background: linear-gradient(135deg, rgba(6, 12, 24, 0.88), rgba(10, 22, 40, 0.92)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            overflow: hidden;
            text-align: center;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.15), transparent 70%);
            pointer-events: none;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: -30%;
            right: 10%;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.12), transparent 70%);
            pointer-events: none;
        }

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

        .breadcrumb {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--text-sub);
            margin-bottom: 16px;
        }

        .breadcrumb a {
            color: var(--text-sub);
            transition: color 0.3s;
        }

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

        .breadcrumb .sep {
            color: #475569;
            font-size: 0.7rem;
        }

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

        .page-banner h1 {
            font-size: clamp(2rem, 4.5vw, 3rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.3;
            letter-spacing: 0.01em;
        }

        .page-banner h1 span {
            color: var(--accent);
        }

        .page-banner .banner-desc {
            max-width: 640px;
            margin: 0 auto;
            color: var(--text-sub);
            font-size: 1.05rem;
            line-height: 1.8;
        }

        .banner-badges {
            display: flex;
            justify-content: center;
            gap: 12px;
            margin-top: 28px;
            flex-wrap: wrap;
        }

        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(15, 27, 48, 0.65);
            border: 1px solid var(--glass-border);
            border-radius: 99px;
            padding: 6px 16px;
            font-size: 0.85rem;
            color: var(--text-main);
            backdrop-filter: blur(8px);
        }

        .banner-badge i {
            color: var(--accent);
        }

        /* ========== Intro Section ========== */
        .intro-section {
            padding: 80px 0;
            position: relative;
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .intro-media {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-glass);
            border: 1px solid var(--glass-border);
        }

        .intro-media img {
            width: 100%;
            height: 340px;
            object-fit: cover;
        }

        .intro-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(6, 12, 24, 0.4), transparent 50%);
        }

        .intro-media .img-tag {
            position: absolute;
            bottom: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(6, 12, 24, 0.8);
            backdrop-filter: blur(8px);
            border: 1px solid var(--glass-border);
            color: var(--accent);
            font-size: 0.85rem;
            padding: 6px 14px;
            border-radius: 99px;
        }

        .intro-content h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.4;
            color: #fff;
        }

        .intro-content h2 span {
            color: var(--accent);
        }

        .intro-content p {
            color: var(--text-sub);
            margin-bottom: 16px;
            font-size: 1rem;
        }

        .intro-steps {
            margin-top: 28px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 16px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(8px);
            transition: transform 0.3s ease, border-color 0.3s ease;
        }

        .step-item:hover {
            transform: translateX(6px);
            border-color: rgba(34, 211, 238, 0.3);
        }

        .step-num {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #0F172A;
            font-weight: 800;
            font-size: 0.9rem;
            border-radius: 10px;
            box-shadow: 0 0 12px rgba(14, 165, 233, 0.3);
        }

        .step-item h4 {
            color: var(--text-main);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .step-item p {
            color: var(--text-sub);
            font-size: 0.88rem;
            margin-bottom: 0;
        }

        /* ========== Features Section ========== */
        .features-section {
            padding: 80px 0;
            background: rgba(10, 22, 40, 0.5);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-sub {
            color: var(--text-sub);
            font-size: 0.95rem;
            max-width: 600px;
            margin: 10px auto 0;
        }

        .section-header h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.4;
        }

        .section-header h2 span {
            color: var(--accent);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            backdrop-filter: blur(10px);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            text-align: left;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            border-color: rgba(34, 211, 238, 0.3);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35), 0 0 20px rgba(14, 165, 233, 0.08);
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            font-size: 1.3rem;
            margin-bottom: 18px;
            background: rgba(14, 165, 233, 0.12);
            color: var(--primary);
            border: 1px solid rgba(14, 165, 233, 0.2);
            transition: all 0.3s ease;
        }

        .feature-card:hover .feature-icon {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #0F172A;
            box-shadow: 0 0 20px rgba(14, 165, 233, 0.4);
        }

        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .feature-card p {
            color: var(--text-sub);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        /* ========== Security Section ========== */
        .security-section {
            padding: 80px 0;
        }

        .security-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .security-item {
            text-align: center;
            padding: 32px 24px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            transition: all 0.3s ease;
        }

        .security-item:hover {
            border-color: rgba(34, 211, 238, 0.3);
            transform: translateY(-4px);
        }

        .security-item i {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 16px;
        }

        .security-item h3 {
            color: var(--text-main);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .security-item p {
            color: var(--text-sub);
            font-size: 0.88rem;
        }

        /* ========== Recommend Section ========== */
        .recommend-section {
            padding: 80px 0;
            background: rgba(10, 22, 40, 0.5);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .recommend-card {
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(10px);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .recommend-card:hover {
            transform: translateY(-6px) scale(1.02);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4), 0 0 24px rgba(14, 165, 233, 0.1);
        }

        .recommend-card .card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

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

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

        .recommend-card .card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(6, 12, 24, 0.7), transparent 50%);
        }

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

        .recommend-card .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            color: var(--accent);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.2);
            padding: 3px 10px;
            border-radius: 99px;
            margin-bottom: 10px;
        }

        .recommend-card h3 {
            color: var(--text-main);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .recommend-card p {
            color: var(--text-sub);
            font-size: 0.88rem;
            margin-bottom: 14px;
            line-height: 1.7;
        }

        .card-link {
            color: var(--primary);
            font-size: 0.88rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.3s ease, color 0.3s ease;
        }

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

        /* ========== CTA Section ========== */
        .cta-section {
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-box {
            background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(34, 211, 238, 0.06));
            border: 1px solid rgba(34, 211, 238, 0.25);
            border-radius: 24px;
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(8px);
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -60%;
            left: 30%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.15), transparent 70%);
            animation: pulse-glow 3s ease-in-out infinite;
        }

        @keyframes pulse-glow {
            0%,
            100% {
                opacity: 0.4;
                transform: scale(1);
            }
            50% {
                opacity: 0.8;
                transform: scale(1.1);
            }
        }

        .cta-box h2 {
            font-size: clamp(1.8rem, 4vw, 2.4rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }

        .cta-box p {
            color: var(--text-sub);
            margin-bottom: 28px;
            position: relative;
            z-index: 2;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #040911;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand h3 {
            color: #fff;
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .footer-brand p {
            color: var(--text-sub);
            font-size: 0.88rem;
            line-height: 1.8;
            max-width: 340px;
        }

        .footer-col h4 {
            color: var(--text-main);
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            color: var(--text-sub);
            font-size: 0.88rem;
            margin-bottom: 10px;
            transition: color 0.3s ease, padding-left 0.3s ease;
        }

        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            text-align: center;
            color: #64748B;
            font-size: 0.8rem;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

            .intro-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .search-box {
                width: 130px;
            }

            .search-box:focus-within {
                width: 160px;
            }
        }

        @media (max-width: 768px) {
            .nav-container {
                gap: 12px;
            }

            .main-nav {
                position: fixed;
                top: 52px;
                right: -100%;
                width: 280px;
                height: calc(100vh - 52px);
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
                background: rgba(6, 12, 24, 0.97);
                backdrop-filter: blur(20px);
                border-left: 1px solid var(--glass-border);
                transition: right 0.4s ease;
                z-index: 99;
                overflow-y: auto;
                display: flex;
            }

            .main-nav.open {
                right: 0;
            }

            .main-nav a {
                width: 100%;
                font-size: 1rem;
                padding: 12px 16px;
                border-radius: 10px;
            }

            .main-nav a.active::after {
                display: none;
            }

            .hamburger {
                display: block;
                order: 3;
            }

            .nav-tools {
                order: 2;
            }

            .site-logo {
                flex: 1;
                min-width: 0;
            }

            .search-box {
                display: none;
            }

            .page-banner {
                padding: 120px 0 60px;
            }

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

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

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

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

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

            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }

            .cta-buttons .btn {
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .btn {
                width: 100%;
            }

            .nav-container {
                gap: 8px;
            }

            .btn-login {
                padding: 6px 12px;
                font-size: 0.8rem;
            }

            .banner-badges {
                flex-direction: column;
                align-items: center;
            }

            .intro-media img {
                height: 240px;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #060C18;
            --bg-secondary: #0A1628;
            --glass-bg: rgba(15, 27, 48, 0.55);
            --glass-border: rgba(255, 255, 255, 0.12);
            --primary: #0EA5E9;
            --secondary: #22D3EE;
            --accent: #F59E0B;
            --success: #10B981;
            --danger: #F43F5E;
            --text-primary: #E2E8F0;
            --text-secondary: #8FA5B9;
            --btn-text: #0F172A;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-badge: 999px;
            --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 20px rgba(14, 165, 233, 0.45);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Heiti SC', sans-serif;
            background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            color: var(--text-primary);
            line-height: 1.75;
            min-height: 100vh;
            background-attachment: fixed;
            overflow-x: hidden;
        }
        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
            background-size: 60px 60px;
            z-index: 0;
            pointer-events: none;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: all .3s ease;
        }
        a:hover {
            color: #fff;
        }
        img {
            max-width: 100%;
            height: auto;
        }

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

        /* ===== NAV ===== */
        .main-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 52px;
            background: rgba(6, 12, 24, 0.65);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.1rem;
            color: #fff !important;
            white-space: nowrap;
            letter-spacing: .5px;
        }
        .nav-logo i {
            color: var(--secondary);
            font-size: 1.4rem;
            animation: spin 12s linear infinite;
        }
        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 2px;
            flex: 1;
            justify-content: center;
        }
        .nav-links a {
            padding: 6px 16px;
            border-radius: 8px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 500;
            position: relative;
            transition: all .3s ease;
        }
        .nav-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-links a.active {
            color: var(--secondary);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -12px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--secondary);
            box-shadow: 0 0 8px rgba(34, 211, 238, 0.6);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-search {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 10px;
            padding: 6px 14px;
            color: var(--text-primary);
            font-size: 0.85rem;
            width: 130px;
            transition: all .3s ease;
            outline: none;
        }
        .nav-search:focus {
            width: 190px;
            border-color: var(--secondary);
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.2);
        }
        .btn-login {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: var(--btn-text) !important;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 10px;
            border: none;
            font-size: 0.88rem;
            cursor: pointer;
            transition: all .3s ease;
            box-shadow: 0 0 16px rgba(14, 165, 233, 0.35);
            white-space: nowrap;
        }
        .btn-login:hover {
            box-shadow: 0 0 28px rgba(14, 165, 233, 0.55);
            transform: translateY(-1px);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.4rem;
            cursor: pointer;
            line-height: 1;
        }

        /* Mobile Menu */
        .mobile-menu {
            position: fixed;
            top: 0;
            right: -280px;
            width: 280px;
            height: 100vh;
            background: rgba(6, 12, 24, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 1100;
            padding: 88px 24px 32px;
            transition: right .35s ease;
            display: flex;
            flex-direction: column;
            gap: 10px;
            border-left: 1px solid rgba(255, 255, 255, 0.08);
        }
        .mobile-menu.show {
            right: 0;
        }
        .mobile-menu a {
            color: var(--text-secondary);
            font-size: 1rem;
            padding: 12px 16px;
            border-radius: 12px;
            transition: all .3s ease;
            font-weight: 500;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--secondary);
            background: rgba(34, 211, 238, 0.08);
        }
        .mobile-menu .btn-login {
            margin-top: 16px;
            justify-content: center;
            padding: 12px;
        }
        .menu-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1050;
            opacity: 0;
            pointer-events: none;
            transition: opacity .3s ease;
        }
        .menu-overlay.show {
            opacity: 1;
            pointer-events: auto;
        }

        /* ===== ARTICLE BANNER ===== */
        .article-banner {
            padding-top: 160px;
            padding-bottom: 56px;
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6, 12, 24, 0.72) 0%, rgba(6, 12, 24, 0.92) 100%);
        }
        .article-banner::after {
            content: '';
            position: absolute;
            top: 20%;
            right: -10%;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.18) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            font-size: 0.85rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 24px;
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--secondary);
        }
        .breadcrumb i {
            font-size: 0.65rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .breadcrumb .current {
            color: var(--text-primary);
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .article-banner h1 {
            font-size: clamp(1.75rem, 4vw, 2.6rem);
            font-weight: 800;
            line-height: 1.35;
            color: #fff;
            max-width: 780px;
            margin-bottom: 20px;
            letter-spacing: .5px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            color: var(--text-secondary);
            font-size: 0.85rem;
            margin-top: 8px;
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }
        .article-meta i {
            color: var(--secondary);
            font-size: 0.8rem;
        }

        /* ===== ARTICLE BODY ===== */
        .article-body {
            padding: 56px 0 40px;
            position: relative;
            z-index: 1;
        }
        .article-container {
            max-width: 720px;
            margin: 0 auto;
        }
        .article-content {
            font-size: 1rem;
            line-height: 1.85;
            color: var(--text-primary);
            word-break: break-word;
        }
        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 36px 0 16px;
            color: #fff;
            line-height: 1.4;
        }
        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin: 28px 0 12px;
            color: #fff;
        }
        .article-content h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 22px 0 10px;
            color: #E2E8F0;
        }
        .article-content p {
            margin-bottom: 18px;
        }
        .article-content img {
            border-radius: 12px;
            margin: 24px 0;
            box-shadow: var(--shadow-glass);
        }
        .article-content ul,
        .article-content ol {
            padding-left: 24px;
            margin-bottom: 18px;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            padding: 14px 20px;
            margin: 24px 0;
            background: rgba(14, 165, 233, 0.08);
            border-radius: 0 12px 12px 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
        }
        .article-content th,
        .article-content td {
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 10px 14px;
            text-align: left;
        }
        .article-content th {
            background: rgba(14, 165, 233, 0.1);
            color: #fff;
            font-weight: 600;
        }
        .article-content code {
            background: rgba(255, 255, 255, 0.08);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--secondary);
        }
        .article-content a {
            color: var(--secondary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: #fff;
        }

        /* Tags */
        .article-tags {
            margin-top: 36px;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .article-tag {
            display: inline-block;
            padding: 5px 16px;
            border-radius: 999px;
            background: rgba(14, 165, 233, 0.12);
            border: 1px solid rgba(14, 165, 233, 0.25);
            color: var(--secondary);
            font-size: 0.8rem;
            transition: all .3s ease;
            cursor: default;
        }
        .article-tag:hover {
            background: rgba(14, 165, 233, 0.25);
        }

        /* Not Found */
        .not-found {
            text-align: center;
            padding: 80px 0;
        }
        .not-found i {
            font-size: 3rem;
            color: var(--text-secondary);
            margin-bottom: 20px;
            display: block;
        }
        .not-found h2 {
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: 12px;
        }
        .not-found p {
            color: var(--text-secondary);
            margin-bottom: 28px;
        }

        /* ===== RELATED ===== */
        .related-section {
            padding: 64px 0;
            background: rgba(10, 22, 40, 0.4);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            position: relative;
            z-index: 1;
        }
        .section-title {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            margin-bottom: 36px;
            position: relative;
            padding-left: 18px;
            color: #fff;
        }
        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 26px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--primary), var(--secondary));
            box-shadow: 0 0 12px rgba(14, 165, 233, 0.4);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all .4s ease;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
            border-color: rgba(34, 211, 238, 0.3);
        }
        .related-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            display: block;
            border-radius: 0;
        }
        .related-card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .related-card h3 {
            font-size: 1rem;
            color: var(--text-primary);
            line-height: 1.5;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            font-weight: 600;
            transition: color .3s ease;
        }
        .related-card:hover h3 {
            color: var(--secondary);
        }
        .related-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
            line-height: 1.6;
        }
        .related-card .card-link {
            margin-top: auto;
            font-size: 0.85rem;
            color: var(--secondary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
        }
        .related-card .card-link i {
            font-size: 0.7rem;
            transition: transform .3s ease;
        }
        .related-card:hover .card-link i {
            transform: translateX(4px);
        }

        /* ===== CTA ===== */
        .article-cta {
            padding: 64px 0;
            position: relative;
            z-index: 1;
            text-align: center;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
        }
        .article-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(6, 12, 24, 0.8);
        }
        .cta-inner {
            position: relative;
            z-index: 2;
        }
        .cta-inner h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            color: #fff;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .cta-inner p {
            color: var(--text-secondary);
            font-size: 1rem;
            max-width: 520px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: var(--btn-text) !important;
            font-weight: 600;
            padding: 12px 30px;
            border-radius: 10px;
            border: none;
            font-size: 0.95rem;
            cursor: pointer;
            box-shadow: 0 0 20px rgba(14, 165, 233, 0.4);
            transition: all .3s ease;
        }
        .btn-primary:hover {
            box-shadow: 0 0 30px rgba(14, 165, 233, 0.6);
            transform: translateY(-2px);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary) !important;
            font-weight: 500;
            padding: 12px 30px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.18);
            font-size: 0.95rem;
            cursor: pointer;
            transition: all .3s ease;
        }
        .btn-outline:hover {
            border-color: var(--secondary);
            color: var(--secondary) !important;
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.15);
            transform: translateY(-2px);
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: #040A14;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 60px 0 24px;
            position: relative;
            z-index: 1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .footer-brand h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand h3 i {
            color: var(--secondary);
        }
        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.88rem;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: var(--text-secondary);
            font-size: 0.88rem;
            padding: 4px 0;
            transition: all .3s ease;
        }
        .footer-col a:hover {
            color: var(--secondary);
            padding-left: 6px;
        }
        .footer-bottom {
            padding-top: 24px;
            text-align: center;
            color: rgba(255, 255, 255, 0.35);
            font-size: 0.8rem;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-search {
                width: 100px;
            }
            .nav-search:focus {
                width: 140px;
            }
        }
        @media (max-width: 768px) {
            .nav-links,
            .nav-search {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .article-banner {
                padding-top: 130px;
                padding-bottom: 40px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .article-meta {
                gap: 12px;
            }
            .cta-btns {
                flex-direction: column;
                align-items: center;
            }
            .cta-btns .btn-primary,
            .cta-btns .btn-outline {
                width: 100%;
                max-width: 300px;
            }
        }
        @media (max-width: 520px) {
            .nav-logo {
                font-size: 1rem;
            }
            .nav-logo i {
                font-size: 1.1rem;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .article-banner {
                padding-top: 110px;
            }
            .article-banner h1 {
                font-size: 1.5rem;
            }
            .article-meta {
                flex-direction: column;
                gap: 8px;
            }
            .article-body {
                padding: 40px 0 32px;
            }
            .related-section,
            .article-cta {
                padding: 48px 0;
            }
            .breadcrumb .current {
                max-width: 180px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-deep: #060C18;
            --bg-base: #0A1628;
            --glass-bg: rgba(15, 27, 48, 0.55);
            --glass-border: rgba(255, 255, 255, 0.12);
            --primary: #0EA5E9;
            --accent: #22D3EE;
            --gold: #F59E0B;
            --success: #10B981;
            --danger: #F43F5E;
            --text-main: #E2E8F0;
            --text-sub: #8FA5B9;
            --text-dark: #0F172A;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-badge: 999px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 20px rgba(14, 165, 233, 0.45);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Heiti SC", sans-serif;
            background: var(--bg-deep);
            color: var(--text-main);
            line-height: 1.75;
            background-image:
                radial-gradient(ellipse at 20% 20%, rgba(14, 165, 233, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 0%, rgba(34, 211, 238, 0.05) 0%, transparent 40%),
                linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-base) 100%);
            background-attachment: fixed;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            z-index: 0;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            position: relative;
            z-index: 1;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: opacity 0.3s ease;
        }

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

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

        .glass-panel {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
        }

        .primary-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: var(--text-dark);
            font-weight: 700;
            font-size: 1rem;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-glow);
        }

        .primary-btn:hover {
            box-shadow: 0 0 28px rgba(14, 165, 233, 0.7);
            transform: translateY(-2px);
        }

        .primary-btn:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        .secondary-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--text-main);
            font-weight: 600;
            font-size: 1rem;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--glass-border);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .secondary-btn:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(34, 211, 238, 0.08);
        }

        .secondary-btn:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        .badge-pill {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 999px;
            font-size: 0.875rem;
            font-weight: 600;
            background: rgba(14, 165, 233, 0.15);
            color: var(--accent);
            border: 1px solid rgba(34, 211, 238, 0.3);
        }

        .section-padding {
            padding: 80px 0;
        }

        @media (max-width: 768px) {
            .section-padding {
                padding: 64px 0;
            }
        }

        @media (max-width: 640px) {
            .section-padding {
                padding: 40px 0;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        h1,
        h2,
        h3,
        h4 {
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

        h1 {
            font-size: clamp(2.25rem, 5vw, 3.2rem);
        }

        h2 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
        }

        h3 {
            font-size: 1.375rem;
        }

        h4 {
            font-size: 1.125rem;
        }

        .section-head {
            text-align: center;
            max-width: 740px;
            margin: 0 auto 48px;
        }

        .section-head .section-tag {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 999px;
            font-size: 0.875rem;
            font-weight: 600;
            background: rgba(14, 165, 233, 0.1);
            color: var(--accent);
            border: 1px solid rgba(34, 211, 238, 0.25);
            margin-bottom: 12px;
        }

        .section-head h2 {
            margin-bottom: 12px;
        }

        .section-head p {
            color: var(--text-sub);
            font-size: 1rem;
        }

        .main-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(6, 12, 24, 0.65);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            height: 52px;
        }

        .main-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 52px;
            gap: 16px;
            max-width: 1400px;
        }

        .header-left {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-main);
            font-weight: 800;
            font-size: 1.125rem;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: radial-gradient(circle at 30% 30%, rgba(34, 211, 238, 0.3), rgba(14, 165, 233, 0.05));
            border: 1px solid rgba(34, 211, 238, 0.4);
            color: var(--accent);
            font-size: 1.1rem;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 24px;
        }

        .main-nav a {
            font-size: 0.9375rem;
            color: var(--text-sub);
            font-weight: 500;
            padding: 4px 0;
            position: relative;
            transition: color 0.3s ease;
            white-space: nowrap;
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(34, 211, 238, 0.6);
        }

        .main-nav a:hover {
            color: var(--text-main);
        }

        .main-nav a:hover::after {
            transform: scaleX(0.6);
        }

        .main-nav a.active {
            color: var(--text-main);
            font-weight: 600;
        }

        .main-nav a.active::after {
            transform: scaleX(1);
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 999px;
            padding: 6px 14px;
            width: 180px;
            transition: width 0.4s ease, border-color 0.3s ease;
        }

        .header-search input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-main);
            font-size: 0.875rem;
            width: 100%;
            padding: 0 8px;
        }

        .header-search input::placeholder {
            color: rgba(143, 165, 185, 0.7);
        }

        .header-search:focus-within {
            width: 220px;
            border-color: var(--accent);
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.2);
        }

        .header-search i {
            color: var(--text-sub);
            font-size: 0.875rem;
        }

        .header-login-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: var(--text-dark);
            font-weight: 700;
            font-size: 0.875rem;
            padding: 6px 18px;
            border-radius: 999px;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 0 12px rgba(14, 165, 233, 0.3);
            white-space: nowrap;
        }

        .header-login-btn:hover {
            box-shadow: 0 0 20px rgba(14, 165, 233, 0.6);
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 8px;
            color: var(--text-main);
            padding: 6px 10px;
            font-size: 1rem;
            cursor: pointer;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 52px;
            right: 0;
            bottom: 0;
            width: 280px;
            background: rgba(6, 12, 24, 0.95);
            backdrop-filter: blur(20px);
            z-index: 99;
            padding: 32px 24px;
            flex-direction: column;
            gap: 20px;
            transform: translateX(100%);
            transition: transform 0.4s ease;
            border-left: 1px solid rgba(255, 255, 255, 0.08);
        }

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

        .mobile-menu a {
            color: var(--text-main);
            font-size: 1rem;
            font-weight: 600;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .mobile-menu a.active {
            color: var(--accent);
        }

        .mobile-menu .mobile-login-btn {
            margin-top: 16px;
            justify-content: center;
            display: flex;
            padding: 12px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: var(--text-dark);
            font-weight: 700;
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .header-search {
                display: none;
            }
            .header-login-btn {
                display: none;
            }
            .mobile-menu-toggle {
                display: inline-flex;
            }
            .mobile-menu {
                display: flex;
            }
        }

        .page-banner {
            position: relative;
            padding-top: 160px;
            padding-bottom: 56px;
            background-image: linear-gradient(135deg, rgba(14, 165, 233, 0.12) 0%, transparent 50%), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6, 12, 24, 0.6) 0%, rgba(10, 22, 40, 0.9) 100%);
            z-index: 0;
        }

        .page-banner .container {
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: var(--text-sub);
            margin-bottom: 12px;
        }

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

        .breadcrumb i {
            font-size: 0.75rem;
            color: rgba(143, 165, 185, 0.5);
        }

        .page-banner h1 {
            font-size: clamp(2rem, 4vw, 2.875rem);
            margin-bottom: 12px;
        }

        .page-banner .banner-desc {
            color: var(--text-sub);
            font-size: 1rem;
            max-width: 720px;
            line-height: 1.75;
        }

        .faq-section {
            padding: 80px 0;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .faq-item.active {
            border-color: rgba(34, 211, 238, 0.4);
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.1);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 20px 24px;
            cursor: pointer;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text-main);
            font-size: 1rem;
            font-weight: 600;
            transition: background 0.3s ease;
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(34, 211, 238, 0.15);
            color: var(--accent);
            font-size: 0.75rem;
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-sub);
            font-size: 0.875rem;
            line-height: 1.75;
            border-top: 0 solid rgba(255, 255, 255, 0.06);
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
            border-top-width: 1px;
            padding-top: 16px;
        }

        .service-intro {
            padding: 80px 0;
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .intro-media {
            border-radius: 16px;
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow-card);
        }

        .intro-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .intro-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(6, 12, 24, 0.6));
        }

        .intro-content .intro-badge {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 999px;
            font-size: 0.875rem;
            font-weight: 600;
            background: rgba(14, 165, 233, 0.1);
            color: var(--accent);
            border: 1px solid rgba(34, 211, 238, 0.25);
            margin-bottom: 16px;
        }

        .intro-content h2 {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            margin-bottom: 16px;
        }

        .intro-content p {
            color: var(--text-sub);
            margin-bottom: 16px;
        }

        .intro-points {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 20px;
        }

        .intro-points li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-main);
            font-size: 0.9375rem;
        }

        .intro-points li i {
            color: var(--success);
            font-size: 1rem;
            margin-top: 4px;
            flex-shrink: 0;
        }

        @media (max-width: 768px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        .service-features {
            padding: 80px 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);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            text-align: center;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4), 0 0 20px rgba(14, 165, 233, 0.15);
        }

        .feature-card .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(14, 165, 233, 0.15), rgba(34, 211, 238, 0.1));
            border: 1px solid rgba(34, 211, 238, 0.3);
            color: var(--accent);
            font-size: 1.5rem;
        }

        .feature-card h3 {
            margin-bottom: 8px;
        }

        .feature-card p {
            color: var(--text-sub);
            font-size: 0.9375rem;
        }

        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
        }

        .timeline-section {
            padding: 80px 0;
        }

        .timeline {
            max-width: 800px;
            margin: 40px auto 0;
            position: relative;
            list-style: none;
        }

        .timeline::before {
            content: "";
            position: absolute;
            left: 24px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), var(--accent), transparent);
            opacity: 0.4;
        }

        .timeline-item {
            position: relative;
            padding-left: 72px;
            padding-bottom: 40px;
        }

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

        .timeline-marker {
            position: absolute;
            left: 18px;
            top: 0;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.6);
            border: 3px solid rgba(6, 12, 24, 0.9);
        }

        .timeline-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: transform 0.3s ease, border-color 0.3s ease;
        }

        .timeline-card:hover {
            transform: translateY(-2px);
            border-color: rgba(34, 211, 238, 0.4);
        }

        .timeline-card h3 {
            font-size: 1.125rem;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .timeline-card p {
            color: var(--text-sub);
            font-size: 0.9375rem;
        }

        .related-section {
            padding: 80px 0;
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: flex-end;
            background-size: cover;
            background-position: center;
            transition: transform 0.4s ease;
        }

        .related-card:hover {
            transform: translateY(-6px);
        }

        .related-card::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(6, 12, 24, 0.92) 100%);
        }

        .related-card-body {
            position: relative;
            padding: 24px;
            width: 100%;
        }

        .related-card-body .badge-pill {
            margin-bottom: 10px;
        }

        .related-card-body h3 {
            font-size: 1.125rem;
            color: #fff;
            margin-bottom: 8px;
        }

        .related-card-body p {
            color: rgba(226, 232, 240, 0.8);
            font-size: 0.875rem;
            margin-bottom: 12px;
        }

        .related-card-body .related-link {
            color: var(--accent);
            font-size: 0.875rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .related-card-body .related-link:hover {
            gap: 10px;
        }

        @media (max-width: 768px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }

        .cta-section {
            position: relative;
            padding: 80px 0;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            opacity: 0.15;
        }

        .cta-section::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(14, 165, 233, 0.2) 0%, transparent 60%);
        }

        .cta-box {
            position: relative;
            z-index: 1;
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
            padding: 48px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 24px;
            backdrop-filter: blur(16px);
        }

        .cta-box h2 {
            margin-bottom: 12px;
        }

        .cta-box p {
            color: var(--text-sub);
            margin-bottom: 32px;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        @media (max-width: 640px) {
            .cta-actions {
                flex-direction: column;
                width: 100%;
            }
            .cta-actions .primary-btn,
            .cta-actions .secondary-btn {
                justify-content: center;
                width: 100%;
            }
            .cta-box {
                padding: 32px 20px;
            }
        }

        .site-footer {
            background: rgba(4, 8, 16, 0.8);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand h3 {
            color: var(--text-main);
            font-size: 1.125rem;
            font-weight: 800;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-brand h3 .logo-icon {
            width: 28px;
            height: 28px;
            font-size: 0.875rem;
        }

        .footer-brand p {
            color: var(--text-sub);
            font-size: 0.875rem;
            line-height: 1.75;
        }

        .footer-col h4 {
            color: var(--text-main);
            font-size: 0.9375rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            color: var(--text-sub);
            font-size: 0.875rem;
            padding: 6px 0;
            transition: color 0.3s ease, padding-left 0.3s ease;
        }

        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            text-align: center;
            color: rgba(143, 165, 185, 0.7);
            font-size: 0.8125rem;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        .feature-divider {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            margin: 32px 0;
            color: rgba(143, 165, 185, 0.5);
            font-size: 0.875rem;
        }

        .feature-divider::before,
        .feature-divider::after {
            content: "";
            width: 40px;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.3));
        }

        .feature-divider::after {
            background: linear-gradient(90deg, rgba(34, 211, 238, 0.3), transparent);
        }

/* roulang page: category2 */
:root {
            --bg-deep: #060C18;
            --bg-dark: #0A1628;
            --glass-bg: rgba(15, 27, 48, 0.55);
            --glass-border: rgba(255, 255, 255, 0.12);
            --primary: #0EA5E9;
            --second: #22D3EE;
            --gold: #F59E0B;
            --success: #10B981;
            --danger: #F43F5E;
            --text-main: #E2E8F0;
            --text-sub: #8FA5B9;
            --radius-card: 16px;
            --radius-btn: 10px;
            --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.35);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Heiti SC", sans-serif;
            background: linear-gradient(145deg, var(--bg-deep) 0%, var(--bg-dark) 55%, #0D1F33 100%);
            background-attachment: fixed;
            color: var(--text-main);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
        }
        body::before {
            content: "";
            position: fixed;
            inset: 0;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%3E%3Cpath d='M60 0H0v60h60V0zM30 30l15-15M30 30L15 15M30 30l15 15M30 30L15 45' stroke='rgba(255,255,255,0.03)' stroke-width='0.5'/%3E%3C/svg%3E");
            pointer-events: none;
            z-index: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 52px;
            background: rgba(6, 12, 24, 0.65);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            z-index: 100;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 52px;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-mark {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: radial-gradient(circle at 35% 35%, var(--second), var(--primary) 60%, rgba(14, 165, 233, 0.2));
            box-shadow: 0 0 18px rgba(14, 165, 233, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }
        .logo-mark::after {
            content: "";
            position: absolute;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            border: 2px solid rgba(255, 255, 255, 0.7);
            top: 5px;
            right: 4px;
        }
        .logo-text {
            font-weight: 800;
            font-size: 1.05rem;
            letter-spacing: 0.02em;
            white-space: nowrap;
            background: linear-gradient(90deg, #fff, var(--second));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            flex: 1;
            justify-content: center;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .main-nav a {
            padding: 8px 16px;
            font-size: 0.92rem;
            color: rgba(226, 232, 240, 0.7);
            border-radius: 8px;
            transition: all 0.25s ease;
            position: relative;
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: #fff;
            background: rgba(14, 165, 233, 0.08);
        }
        .main-nav a.active {
            color: #fff;
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 3px;
            height: 2px;
            background: var(--second);
            border-radius: 2px;
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.7);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            padding: 0 12px;
            height: 32px;
            width: 130px;
            transition: all 0.35s ease;
        }
        .search-box:focus-within {
            width: 190px;
            border-color: var(--second);
            box-shadow: 0 0 14px rgba(34, 211, 238, 0.25);
        }
        .search-box i {
            font-size: 0.8rem;
            color: var(--text-sub);
            margin-right: 8px;
        }
        .search-box input {
            background: transparent;
            border: none;
            color: var(--text-main);
            font-size: 0.82rem;
            width: 100%;
        }
        .search-box input::placeholder {
            color: rgba(143, 165, 185, 0.7);
        }
        .btn-login {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--second));
            color: #0F172A;
            font-weight: 700;
            font-size: 0.85rem;
            box-shadow: 0 0 20px rgba(14, 165, 233, 0.35);
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .btn-login:hover {
            box-shadow: 0 0 28px rgba(34, 211, 238, 0.5);
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 4px;
            background: transparent;
            padding: 6px;
            cursor: pointer;
            border-radius: 6px;
            z-index: 110;
        }
        .nav-toggle span {
            width: 22px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        /* ===== Buttons ===== */
        .btn-primary,
        .btn-outline,
        .btn-gold {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 12px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--second));
            color: #0F172A;
            box-shadow: 0 0 22px rgba(14, 165, 233, 0.45);
        }
        .btn-primary:hover {
            box-shadow: 0 0 32px rgba(34, 211, 238, 0.6);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-main);
        }
        .btn-outline:hover {
            border-color: var(--second);
            background: rgba(34, 211, 238, 0.08);
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.15);
        }
        .btn-gold {
            background: linear-gradient(135deg, #F59E0B, #FBBF24);
            color: #0F172A;
            box-shadow: 0 0 20px rgba(245, 158, 11, 0.4);
        }
        .btn-gold:hover {
            box-shadow: 0 0 30px rgba(245, 158, 11, 0.6);
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 15px 40px;
            font-size: 1.05rem;
        }

        /* ===== Section ===== */
        .section {
            padding: 80px 0;
            position: relative;
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }
        .section-head h2 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-head p {
            color: var(--text-sub);
            font-size: 1rem;
            line-height: 1.7;
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 160px 0 80px;
            overflow: hidden;
            background: linear-gradient(90deg, rgba(6, 12, 24, 0.92), rgba(10, 22, 40, 0.75));
        }
        .banner-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.3;
            z-index: 0;
        }
        .banner-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(6, 12, 24, 0.95) 30%, rgba(10, 22, 40, 0.6));
        }
        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-sub);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--text-sub);
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--second);
        }
        .breadcrumb-sep {
            color: rgba(255, 255, 255, 0.3);
        }
        .page-banner h1 {
            font-size: clamp(2.25rem, 5vw, 3.2rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
            background: linear-gradient(90deg, #fff, var(--second));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .banner-sub {
            font-size: 1.1rem;
            color: var(--text-sub);
            margin-bottom: 32px;
            max-width: 560px;
        }
        .banner-ctas {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .banner-trust {
            display: flex;
            gap: 24px;
            margin-top: 36px;
            flex-wrap: wrap;
        }
        .banner-trust span {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(226, 232, 240, 0.7);
        }
        .banner-trust i {
            color: var(--success);
        }

        /* ===== Timeline ===== */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px 0;
        }
        .timeline::before {
            content: "";
            position: absolute;
            left: 16px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), var(--second), rgba(255, 255, 255, 0.05));
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            padding-left: 52px;
            margin-bottom: 32px;
        }
        .timeline-item::before {
            content: "";
            position: absolute;
            left: 9px;
            top: 24px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: rgba(6, 12, 24, 0.9);
            border: 3px solid var(--second);
            box-shadow: 0 0 16px rgba(34, 211, 238, 0.5);
            z-index: 1;
        }
        .timeline-item.live::before {
            border-color: var(--gold);
            box-shadow: 0 0 20px rgba(245, 158, 11, 0.6);
            animation: pulse-dot 1.5s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 12px rgba(245, 158, 11, 0.4);
            }
            50% {
                box-shadow: 0 0 24px rgba(245, 158, 11, 0.8);
            }
        }
        .timeline-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 24px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--shadow-glass);
            transition: all 0.3s ease;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: flex-start;
            justify-content: space-between;
        }
        .timeline-card:hover {
            transform: translateY(-3px);
            border-color: rgba(34, 211, 238, 0.35);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
        }
        .timeline-date {
            display: flex;
            flex-direction: column;
            align-items: center;
            background: rgba(14, 165, 233, 0.15);
            border-radius: 12px;
            padding: 10px 16px;
            min-width: 72px;
        }
        .timeline-date .day {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--second);
            line-height: 1.1;
        }
        .timeline-date .month {
            font-size: 0.78rem;
            color: var(--text-sub);
            text-transform: uppercase;
        }
        .timeline-info {
            flex: 1;
            min-width: 220px;
        }
        .timeline-info h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .timeline-info p {
            font-size: 0.88rem;
            color: var(--text-sub);
            line-height: 1.6;
        }
        .timeline-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(245, 158, 11, 0.15);
            color: var(--gold);
            border: 1px solid rgba(245, 158, 11, 0.3);
        }
        .timeline-tag.wait {
            background: rgba(16, 185, 129, 0.15);
            color: var(--success);
            border-color: rgba(16, 185, 129, 0.3);
        }
        .timeline-cta {
            align-self: center;
        }
        .timeline-cta a {
            font-size: 0.85rem;
            padding: 8px 18px;
            border-radius: 8px;
            white-space: nowrap;
        }

        /* ===== Sport Cards ===== */
        .sport-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .sport-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--shadow-glass);
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
        }
        .sport-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 16px 44px rgba(0, 0, 0, 0.5), 0 0 24px rgba(14, 165, 233, 0.15);
            border-color: rgba(34, 211, 238, 0.3);
        }
        .sport-card-img {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .sport-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .sport-card:hover .sport-card-img img {
            transform: scale(1.05);
        }
        .sport-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(6, 12, 24, 0.75));
        }
        .sport-card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .sport-card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .sport-card-body p {
            font-size: 0.88rem;
            color: var(--text-sub);
            line-height: 1.65;
            flex: 1;
        }
        .sport-card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 16px;
        }
        .sport-card-footer .btn-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--second);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.2s;
        }
        .sport-card-footer .btn-link:hover {
            gap: 10px;
        }

        /* ===== Join Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            text-align: center;
            position: relative;
            transition: all 0.3s ease;
        }
        .step-card:hover {
            background: rgba(14, 165, 233, 0.06);
            border-color: rgba(34, 211, 238, 0.3);
            transform: translateY(-4px);
        }
        .step-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: rgba(14, 165, 233, 0.3);
            line-height: 1;
            margin-bottom: 16px;
            font-family: "Courier New", monospace;
        }
        .step-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .step-card p {
            font-size: 0.85rem;
            color: var(--text-sub);
            line-height: 1.6;
        }
        .step-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            background: linear-gradient(135deg, rgba(14, 165, 233, 0.2), rgba(34, 211, 238, 0.1));
            border: 1px solid rgba(34, 211, 238, 0.25);
            color: var(--second);
        }

        /* ===== Benefits ===== */
        .benefit-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .benefit-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            text-align: center;
            transition: all 0.3s ease;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            position: relative;
            overflow: hidden;
        }
        .benefit-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--second));
            opacity: 0.6;
        }
        .benefit-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
        }
        .benefit-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--gold);
            background: rgba(245, 158, 11, 0.12);
            border: 1px solid rgba(245, 158, 11, 0.25);
        }
        .benefit-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .benefit-card p {
            font-size: 0.88rem;
            color: var(--text-sub);
            line-height: 1.65;
        }

        /* ===== FAQ ===== */
        .faq-section {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 14px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color 0.3s;
        }
        .faq-item.open {
            border-color: rgba(34, 211, 238, 0.35);
        }
        .faq-question {
            width: 100%;
            background: transparent;
            color: var(--text-main);
            padding: 20px 24px;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: background 0.3s;
        }
        .faq-question:hover {
            background: rgba(14, 165, 233, 0.04);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(14, 165, 233, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            color: var(--second);
            flex-shrink: 0;
            transition: all 0.3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(14, 165, 233, 0.25);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 20px;
        }
        .faq-answer p {
            font-size: 0.9rem;
            color: var(--text-sub);
            line-height: 1.7;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 14px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(14, 165, 233, 0.08), rgba(15, 27, 48, 0.4));
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .cta-section::before {
            content: "";
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.15), transparent 70%);
            top: -200px;
            right: -100px;
            pointer-events: none;
        }
        .cta-section::after {
            content: "";
            position: absolute;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.08), transparent 70%);
            bottom: -150px;
            left: -50px;
            pointer-events: none;
        }
        .cta-inner {
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .cta-inner h2 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-inner p {
            font-size: 1rem;
            color: var(--text-sub);
            max-width: 520px;
            margin: 0 auto 32px;
        }
        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #04080F;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 56px 0 28px;
            position: relative;
            z-index: 1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 12px;
            background: linear-gradient(90deg, #fff, var(--second));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-sub);
            line-height: 1.7;
            max-width: 400px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
            color: rgba(226, 232, 240, 0.9);
        }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--text-sub);
            padding: 5px 0;
            transition: all 0.2s;
        }
        .footer-col a:hover {
            color: var(--second);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 0.8rem;
            color: rgba(143, 165, 185, 0.6);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .sport-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .benefit-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .header-actions .search-box {
                display: none;
            }
            .nav-wrap {
                position: fixed;
                top: 52px;
                right: -100%;
                width: 280px;
                height: calc(100vh - 52px);
                background: rgba(6, 12, 24, 0.95);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: 24px;
                transition: right 0.35s ease;
                z-index: 105;
                border-left: 1px solid rgba(255, 255, 255, 0.08);
            }
            .nav-wrap.open {
                right: 0;
            }
            .main-nav {
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
            }
            .main-nav a {
                padding: 12px 16px;
                font-size: 1rem;
            }
            .main-nav a.active::after {
                left: 16px;
                right: auto;
                width: 24px;
            }
            .nav-toggle {
                display: flex;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }
            .page-banner {
                padding: 130px 0 56px;
            }
            .sport-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .benefit-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .banner-ctas .btn-primary,
            .banner-ctas .btn-outline {
                width: 100%;
            }
            .timeline-card {
                flex-direction: column;
            }
            .timeline-cta {
                align-self: flex-start;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .sport-grid {
                grid-template-columns: 1fr;
            }
            .logo-text {
                font-size: 0.95rem;
                max-width: 130px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }
            .btn-login {
                padding: 6px 12px;
                font-size: 0.8rem;
            }
            .header-actions {
                gap: 6px;
            }
        }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-up {
            animation: fadeUp 0.7s ease both;
        }
        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }

        @keyframes float-arc {
            from {
                transform: rotate(0deg) translateX(14px) rotate(0deg);
            }
            to {
                transform: rotate(360deg) translateX(14px) rotate(-360deg);
            }
        }
        .arc-line {
            position: absolute;
            border-radius: 50%;
            border: 2px solid rgba(14, 165, 233, 0.18);
            pointer-events: none;
        }