/* roulang page: index */
:root {
            --bg-deep: #06060f;
            --bg-panel: #0e0e20;
            --bg-card: #111128;
            --bg-elevated: #161635;
            --text-primary: #f0f0f7;
            --text-secondary: #9da3c0;
            --text-muted: #6b7094;
            --neon-cyan: #00e5ff;
            --neon-cyan-dim: rgba(0, 229, 255, 0.25);
            --neon-purple: #b347ea;
            --neon-purple-dim: rgba(179, 71, 234, 0.25);
            --neon-pink: #ff3d7f;
            --neon-pink-dim: rgba(255, 61, 127, 0.25);
            --accent-gold: #ffb347;
            --border-subtle: rgba(255, 255, 255, 0.06);
            --border-glow: rgba(0, 229, 255, 0.35);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-glow-cyan: 0 0 20px rgba(0, 229, 255, 0.2), 0 0 50px rgba(0, 229, 255, 0.06);
            --shadow-glow-purple: 0 0 20px rgba(179, 71, 234, 0.2), 0 0 50px rgba(179, 71, 234, 0.06);
            --shadow-glow-pink: 0 0 20px rgba(255, 61, 127, 0.2), 0 0 50px rgba(255, 61, 127, 0.06);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
            --shadow-elevated: 0 8px 40px rgba(0, 0, 0, 0.55);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --nav-height: 68px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button, input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            cursor: pointer;
        }

        button:focus-visible, a:focus-visible {
            outline: 2px solid var(--neon-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

        ul, ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 10, 26, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            height: var(--nav-height);
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(10, 10, 26, 0.94);
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.5);
            border-bottom-color: var(--border-glow);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            font-weight: 900;
            flex-shrink: 0;
            box-shadow: var(--shadow-glow-cyan);
        }

        .nav-logo:hover {
            color: var(--neon-cyan);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 24px;
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

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

        .nav-links a.active {
            color: var(--neon-cyan);
            background: rgba(0, 229, 255, 0.08);
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 9px 22px;
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
            border-radius: 24px;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-glow-cyan);
            white-space: nowrap;
        }

        .nav-cta:hover {
            box-shadow: 0 0 30px rgba(0, 229, 255, 0.45), 0 0 60px rgba(179, 71, 234, 0.2);
            transform: translateY(-1px);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast);
        }

        .nav-toggle:hover {
            color: var(--neon-cyan);
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 24px 80px;
            overflow: hidden;
            background: var(--bg-deep);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.38;
            filter: saturate(1.3) brightness(0.7);
        }

        .hero-bg-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: radial-gradient(ellipse at 50% 35%, rgba(0, 229, 255, 0.08) 0%, transparent 60%),
                        radial-gradient(ellipse at 30% 60%, rgba(179, 71, 234, 0.06) 0%, transparent 55%),
                        radial-gradient(ellipse at 70% 55%, rgba(255, 61, 127, 0.05) 0%, transparent 55%),
                        linear-gradient(180deg, rgba(6, 6, 15, 0.3) 0%, rgba(6, 6, 15, 0.8) 70%, var(--bg-deep) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 780px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 18px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--neon-cyan);
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.2);
            border-radius: 30px;
            margin-bottom: 24px;
            animation: pulse-badge 3s ease-in-out infinite;
        }

        @keyframes pulse-badge {
            0%, 100% { box-shadow: 0 0 8px rgba(0, 229, 255, 0.15); }
            50% { box-shadow: 0 0 20px rgba(0, 229, 255, 0.35); }
        }

        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--neon-cyan);
            box-shadow: 0 0 8px var(--neon-cyan);
            animation: blink-dot 1.5s ease-in-out infinite;
        }

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

        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-primary);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }

        .hero-subtitle {
            font-size: clamp(1rem, 2vw, 1.2rem);
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: 28px;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            cursor: pointer;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
            color: #fff;
            box-shadow: var(--shadow-glow-cyan);
        }

        .btn-primary:hover {
            box-shadow: 0 0 35px rgba(0, 229, 255, 0.5), 0 0 65px rgba(179, 71, 234, 0.25);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid rgba(255, 255, 255, 0.2);
        }

        .btn-outline:hover {
            border-color: var(--neon-cyan);
            color: var(--neon-cyan);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
            border-radius: 22px;
        }

        /* ========== SECTION SHARED ========== */
        .section {
            padding: 80px 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--neon-cyan);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: clamp(1.6rem, 3.5vw, 2.2rem);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto;
        }

        /* ========== STATS STRIP ========== */
        .stats-strip {
            background: var(--bg-panel);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 28px 0;
        }

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

        .stat-item {
            padding: 10px;
        }

        .stat-number {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            font-weight: 800;
            background: linear-gradient(135deg, var(--neon-cyan), var(--accent-gold));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ========== CATEGORY CARDS ========== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: flex-end;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
            background: var(--bg-card);
        }

        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-elevated), 0 0 40px rgba(0, 229, 255, 0.15);
        }

        .category-card .card-img {
            position: absolute;
            inset: 0;
            z-index: 0;
        }

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

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

        .category-card .card-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: linear-gradient(0deg, rgba(6, 6, 15, 0.9) 25%, rgba(6, 6, 15, 0.3) 65%, rgba(6, 6, 15, 0.1) 100%);
        }

        .category-card .card-body {
            position: relative;
            z-index: 2;
            padding: 32px 28px;
            width: 100%;
        }

        .category-card .card-tag {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: 20px;
            margin-bottom: 12px;
            background: rgba(0, 229, 255, 0.15);
            color: var(--neon-cyan);
            border: 1px solid rgba(0, 229, 255, 0.3);
        }

        .category-card:nth-child(2) .card-tag {
            background: rgba(179, 71, 234, 0.15);
            color: var(--neon-purple);
            border-color: rgba(179, 71, 234, 0.3);
        }

        .category-card .card-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .category-card .card-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 14px;
            line-height: 1.6;
        }

        .category-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--neon-cyan);
            transition: gap var(--transition-fast);
        }

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

        .category-card:nth-child(2) .card-link {
            color: var(--neon-purple);
        }

        /* ========== CMS LIST ========== */
        .cms-list-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .cms-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 22px 20px;
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            gap: 10px;
            box-shadow: var(--shadow-card);
        }

        .cms-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-elevated), 0 0 25px rgba(0, 229, 255, 0.1);
            transform: translateY(-3px);
        }

        .cms-card .cms-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.78rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .cms-card .cms-cat {
            display: inline-block;
            padding: 3px 10px;
            font-size: 0.72rem;
            font-weight: 600;
            border-radius: 14px;
            background: rgba(0, 229, 255, 0.1);
            color: var(--neon-cyan);
        }

        .cms-card .cms-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cms-card .cms-summary {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cms-empty {
            text-align: center;
            color: var(--text-muted);
            font-size: 0.95rem;
            padding: 40px;
            grid-column: 1 / -1;
        }

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

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

        .feature-card:hover {
            border-color: rgba(255, 255, 255, 0.12);
            box-shadow: var(--shadow-elevated);
            transform: translateY(-3px);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.5rem;
            color: #fff;
        }

        .feature-card:nth-child(1) .feature-icon { background: linear-gradient(135deg, var(--neon-cyan), #009faf); box-shadow: var(--shadow-glow-cyan); }
        .feature-card:nth-child(2) .feature-icon { background: linear-gradient(135deg, var(--neon-purple), #6b21a8); box-shadow: var(--shadow-glow-purple); }
        .feature-card:nth-child(3) .feature-icon { background: linear-gradient(135deg, var(--neon-pink), #c02660); box-shadow: var(--shadow-glow-pink); }
        .feature-card:nth-child(4) .feature-icon { background: linear-gradient(135deg, var(--accent-gold), #e07b00); box-shadow: 0 0 20px rgba(255, 179, 71, 0.2); }
        .feature-card:nth-child(5) .feature-icon { background: linear-gradient(135deg, #4ade80, #166534); box-shadow: 0 0 20px rgba(74, 222, 128, 0.2); }
        .feature-card:nth-child(6) .feature-icon { background: linear-gradient(135deg, #60a5fa, #1e40af); box-shadow: 0 0 20px rgba(96, 165, 250, 0.2); }

        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== RANKING ========== */
        .ranking-panel {
            background: var(--bg-panel);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .ranking-row {
            display: flex;
            align-items: center;
            padding: 18px 24px;
            gap: 16px;
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-fast);
        }

        .ranking-row:last-child {
            border-bottom: none;
        }

        .ranking-row:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .rank-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
            color: #fff;
        }

        .rank-num.top1 { background: linear-gradient(135deg, #ffb347, #e07b00); box-shadow: 0 0 14px rgba(255, 179, 71, 0.4); }
        .rank-num.top2 { background: linear-gradient(135deg, #b0b8c8, #6b7280); box-shadow: 0 0 14px rgba(176, 184, 200, 0.3); }
        .rank-num.top3 { background: linear-gradient(135deg, #d48c60, #92400e); box-shadow: 0 0 14px rgba(212, 140, 96, 0.3); }
        .rank-num.normal { background: var(--bg-elevated); color: var(--text-secondary); }

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

        .rank-name {
            font-weight: 600;
            color: var(--text-primary);
            font-size: 0.95rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .rank-detail {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        .rank-stat {
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--neon-cyan);
            flex-shrink: 0;
        }

        /* ========== TESTIMONIALS ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }

        .testimonial-card:hover {
            border-color: rgba(255, 255, 255, 0.1);
            box-shadow: var(--shadow-elevated);
        }

        .testimonial-stars {
            color: var(--accent-gold);
            font-size: 0.85rem;
            margin-bottom: 12px;
            letter-spacing: 2px;
        }

        .testimonial-text {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

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

        .testimonial-avatar {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg-elevated);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            color: var(--neon-cyan);
            flex-shrink: 0;
        }

        .testimonial-name {
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--text-primary);
        }

        .testimonial-role {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }

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

        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.1);
        }

        .faq-item summary {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            color: var(--text-primary);
            user-select: none;
            transition: color var(--transition-fast);
        }

        .faq-item summary:hover {
            color: var(--neon-cyan);
        }

        .faq-item summary .faq-icon {
            font-size: 0.8rem;
            transition: transform var(--transition-fast);
            flex-shrink: 0;
            color: var(--text-muted);
        }

        .faq-item[open] summary .faq-icon {
            transform: rotate(180deg);
            color: var(--neon-cyan);
        }

        .faq-item .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: var(--bg-panel);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 60px 40px;
            text-align: center;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.07) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section .cta-title {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-section .cta-desc {
            color: var(--text-secondary);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
            font-size: 0.95rem;
        }

        .cta-section .btn {
            position: relative;
            z-index: 1;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-panel);
            border-top: 1px solid var(--border-subtle);
            padding: 40px 0;
            margin-top: 40px;
        }

        .footer-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
        }

        .footer-logo {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-primary);
        }

        .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

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

        .footer-copy {
            font-size: 0.8rem;
            color: var(--text-muted);
            width: 100%;
            text-align: center;
            margin-top: 18px;
            padding-top: 18px;
            border-top: 1px solid var(--border-subtle);
        }

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

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(14, 14, 32, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border-subtle);
                box-shadow: 0 10px 30px rgba(0,0,0,0.5);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                width: 100%;
            }
            .nav-cta {
                margin-top: 6px;
                width: 100%;
                justify-content: center;
                border-radius: var(--radius-sm);
            }
            .nav-toggle {
                display: block;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .cms-list-grid {
                grid-template-columns: 1fr;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .ranking-row {
                padding: 14px 16px;
                gap: 10px;
            }
            .section {
                padding: 56px 0;
            }
            .cta-section {
                padding: 40px 20px;
            }
            .hero-section {
                min-height: 90vh;
                padding: 100px 16px 60px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            .hero-btns .btn {
                width: 100%;
                justify-content: center;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .footer-inner {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
            }
            .category-card {
                min-height: 240px;
            }
            .category-card .card-body {
                padding: 20px 16px;
            }
        }

/* roulang page: article */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #0f0f18;
    --bg-card: #141420;
    --bg-card-hover: #1a1a2a;
    --bg-elevated: #1c1c2e;
    --text-primary: #e8e8f0;
    --text-secondary: #b0b0c0;
    --text-muted: #707088;
    --accent-green: #00ff88;
    --accent-green-glow: rgba(0, 255, 136, 0.35);
    --accent-green-dim: rgba(0, 255, 136, 0.12);
    --accent-purple: #b347ea;
    --accent-purple-glow: rgba(179, 71, 234, 0.35);
    --accent-purple-dim: rgba(179, 71, 234, 0.10);
    --accent-cyan: #00d4ff;
    --accent-cyan-glow: rgba(0, 212, 255, 0.30);
    --border-subtle: rgba(255, 255, 255, 0.07);
    --border-medium: rgba(255, 255, 255, 0.12);
    --border-glow: rgba(0, 255, 136, 0.25);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.45);
    --shadow-glow-green: 0 0 30px rgba(0, 255, 136, 0.18), 0 0 60px rgba(0, 255, 136, 0.06);
    --shadow-glow-purple: 0 0 30px rgba(179, 71, 234, 0.18), 0 0 60px rgba(179, 71, 234, 0.06);
    --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;
    --max-width-article: 820px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-image:
        radial-gradient(ellipse at 25% 20%, rgba(0, 255, 136, 0.03) 0%, transparent 55%),
        radial-gradient(ellipse at 75% 35%, rgba(179, 71, 234, 0.03) 0%, transparent 55%),
        radial-gradient(ellipse at 50% 10%, rgba(0, 212, 255, 0.02) 0%, transparent 50%);
}

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

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

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

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ── Header & Navigation ── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.88);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border-subtle);
    transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
}

.site-header.scrolled {
    box-shadow: 0 2px 28px rgba(0, 0, 0, 0.55);
    border-bottom-color: var(--border-glow);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 20px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
    flex-shrink: 0;
    transition: color var(--transition-fast);
}

.nav-logo:hover {
    color: var(--accent-green);
}

.logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--accent-green), var(--accent-cyan));
    color: #0a0a0f;
    font-weight: 900;
    font-size: 1rem;
    letter-spacing: -1px;
    box-shadow: var(--shadow-glow-green);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links a {
    padding: 9px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.925rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    white-space: nowrap;
    position: relative;
}

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

.nav-links a.active {
    color: var(--accent-green);
    background: var(--accent-green-dim);
    font-weight: 600;
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--accent-green);
    border-radius: 2px;
    box-shadow: 0 0 8px var(--accent-green-glow);
}

.nav-cta {
    background: linear-gradient(135deg, var(--accent-green), #00cc6a) !important;
    color: #0a0a0f !important;
    font-weight: 700 !important;
    padding: 9px 20px !important;
    border-radius: 24px !important;
    box-shadow: var(--shadow-glow-green);
    transition: all var(--transition-smooth) !important;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(0, 255, 136, 0.35), 0 6px 20px rgba(0, 0, 0, 0.4) !important;
    background: linear-gradient(135deg, #1aff99, #00e675) !important;
}

.nav-toggle {
    display: none;
    font-size: 1.4rem;
    color: var(--text-primary);
    padding: 6px 8px;
    border-radius: var(--radius-sm);
}

.nav-toggle:hover {
    background: rgba(255, 255, 255, 0.06);
}

/* ── Breadcrumb ── */
.breadcrumb-wrapper {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-subtle);
    padding: 14px 0;
}

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

.breadcrumb a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.breadcrumb .separator {
    color: var(--text-muted);
    font-size: 0.7rem;
    user-select: none;
}

.breadcrumb .current {
    color: var(--accent-green);
    font-weight: 500;
    max-width: 400px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ── Article Hero ── */
.article-hero {
    position: relative;
    padding: 56px 0 40px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-subtle);
    overflow: hidden;
}

.article-hero::before {
    content: '';
    position: absolute;
    top: -120px;
    right: -80px;
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, var(--accent-purple-dim) 0%, transparent 70%);
    pointer-events: none;
}

.article-hero::after {
    content: '';
    position: absolute;
    bottom: -60px;
    left: -60px;
    width: 260px;
    height: 260px;
    background: radial-gradient(circle, var(--accent-green-dim) 0%, transparent 70%);
    pointer-events: none;
}

.article-hero .container {
    position: relative;
    z-index: 1;
}

.article-meta-top {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 18px;
}

.article-category-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    background: var(--accent-purple-dim);
    color: var(--accent-purple);
    border: 1px solid rgba(179, 71, 234, 0.25);
    transition: all var(--transition-fast);
}

.article-category-badge:hover {
    background: rgba(179, 71, 234, 0.2);
    box-shadow: var(--shadow-glow-purple);
    transform: translateY(-1px);
}

.article-date {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.article-date i {
    font-size: 0.75rem;
    color: var(--accent-cyan);
}

.article-tags-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 4px;
}

.article-tag {
    padding: 4px 10px;
    border-radius: 14px;
    font-size: 0.75rem;
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-muted);
    border: 1px solid var(--border-subtle);
    transition: all var(--transition-fast);
}

.article-tag:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    background: rgba(0, 212, 255, 0.06);
}

.article-hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.25;
    color: #ffffff;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
    max-width: 900px;
}

.article-hero .article-excerpt {
    font-size: 1.08rem;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 700px;
}

/* ── Article Body ── */
.article-body-section {
    padding: 44px 0 60px;
    flex: 1;
}

.article-body-wrapper {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

.article-main {
    flex: 1;
    min-width: 0;
    max-width: var(--max-width-article);
}

.article-content {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 44px 48px;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-card);
    line-height: 1.85;
    font-size: 1.05rem;
    color: var(--text-primary);
    word-break: break-word;
}

.article-content h2 {
    font-size: 1.65rem;
    font-weight: 700;
    color: #ffffff;
    margin: 36px 0 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-medium);
    line-height: 1.3;
}

.article-content h2:first-child {
    margin-top: 0;
}

.article-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--accent-cyan);
    margin: 28px 0 12px;
    line-height: 1.3;
}

.article-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 22px 0 10px;
}

.article-content p {
    margin-bottom: 16px;
}

.article-content strong {
    color: #ffffff;
    font-weight: 600;
}

.article-content em {
    color: var(--accent-green);
    font-style: italic;
}

.article-content a {
    color: var(--accent-green);
    text-decoration: underline;
    text-underline-offset: 4px;
    text-decoration-thickness: 1px;
    transition: all var(--transition-fast);
}

.article-content a:hover {
    color: #1aff99;
    text-decoration-thickness: 2px;
}

.article-content ul,
.article-content ol {
    margin: 16px 0;
    padding-left: 24px;
}

.article-content li {
    margin-bottom: 8px;
}

.article-content ul li::marker {
    color: var(--accent-green);
}

.article-content ol li::marker {
    color: var(--accent-purple);
    font-weight: 600;
}

.article-content blockquote {
    margin: 24px 0;
    padding: 18px 24px;
    border-left: 3px solid var(--accent-green);
    background: rgba(0, 255, 136, 0.04);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-secondary);
    font-style: italic;
}

.article-content blockquote p {
    margin-bottom: 0;
}

.article-content img {
    border-radius: var(--radius-md);
    margin: 24px 0;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-subtle);
}

.article-content code {
    background: var(--bg-elevated);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.9em;
    color: var(--accent-cyan);
    border: 1px solid var(--border-subtle);
}

.article-content pre {
    background: var(--bg-elevated);
    padding: 20px 24px;
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: 24px 0;
    border: 1px solid var(--border-subtle);
    font-size: 0.9rem;
    line-height: 1.6;
}

.article-content pre code {
    background: none;
    padding: 0;
    border: none;
    color: var(--text-primary);
}

.article-content hr {
    border: none;
    height: 1px;
    background: var(--border-medium);
    margin: 32px 0;
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 0.95rem;
}

.article-content th {
    background: var(--bg-elevated);
    color: #ffffff;
    font-weight: 600;
    padding: 12px 16px;
    text-align: left;
    border: 1px solid var(--border-medium);
}

.article-content td {
    padding: 10px 16px;
    border: 1px solid var(--border-subtle);
    background: rgba(255, 255, 255, 0.015);
}

.article-content tr:hover td {
    background: rgba(255, 255, 255, 0.03);
}

/* ── Sidebar ── */
.article-sidebar {
    width: 300px;
    flex-shrink: 0;
    position: sticky;
    top: 88px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.sidebar-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-card);
}

.sidebar-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-card h4 i {
    color: var(--accent-green);
    font-size: 0.8rem;
}

.sidebar-article-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sidebar-article-list li a {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.sidebar-article-list li a:hover {
    color: var(--accent-green);
    background: var(--accent-green-dim);
    border-color: rgba(0, 255, 136, 0.15);
}

.sidebar-cta {
    background: linear-gradient(135deg, rgba(179, 71, 234, 0.15), rgba(0, 212, 255, 0.08));
    border: 1px solid rgba(179, 71, 234, 0.3);
    text-align: center;
}

.sidebar-cta p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 14px;
    line-height: 1.5;
}

.btn-sidebar {
    display: inline-block;
    padding: 10px 22px;
    border-radius: 22px;
    font-weight: 600;
    font-size: 0.875rem;
    background: linear-gradient(135deg, var(--accent-green), #00cc6a);
    color: #0a0a0f;
    transition: all var(--transition-smooth);
    box-shadow: var(--shadow-glow-green);
}

.btn-sidebar:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 36px rgba(0, 255, 136, 0.4);
}

/* ── Related Articles ── */
.related-section {
    padding: 50px 0 64px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
}

.related-section .section-label {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-green);
    margin-bottom: 8px;
}

.related-section h2 {
    font-size: 1.8rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 32px;
    letter-spacing: -0.01em;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: 24px;
}

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

.related-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow-green), var(--shadow-card);
}

.related-card-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
}

.related-card-body {
    padding: 18px 20px 22px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.related-card-category {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--accent-purple);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.related-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1.4;
    margin-bottom: 10px;
    flex: 1;
}

.related-card h3 a {
    color: inherit;
    transition: color var(--transition-fast);
}

.related-card h3 a:hover {
    color: var(--accent-green);
}

.related-card .related-date {
    font-size: 0.78rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ── Not Found State ── */
.not-found-state {
    text-align: center;
    padding: 80px 24px;
}

.not-found-state .nf-icon {
    font-size: 4rem;
    color: var(--accent-purple);
    margin-bottom: 20px;
    opacity: 0.7;
}

.not-found-state h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 10px;
}

.not-found-state p {
    color: var(--text-secondary);
    margin-bottom: 28px;
    font-size: 1rem;
}

.btn-back-home {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 24px;
    font-weight: 600;
    font-size: 0.95rem;
    background: linear-gradient(135deg, var(--accent-green), #00cc6a);
    color: #0a0a0f;
    transition: all var(--transition-smooth);
    box-shadow: var(--shadow-glow-green);
}

.btn-back-home:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(0, 255, 136, 0.4);
}

/* ── CTA Section ── */
.cta-section {
    padding: 56px 0;
    text-align: center;
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(0, 255, 136, 0.04) 0%, transparent 70%);
    pointer-events: none;
}

.cta-section h2 {
    font-size: 2rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 12px;
    position: relative;
    letter-spacing: -0.01em;
}

.cta-section p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 28px;
    max-width: 550px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
}

.btn-cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 34px;
    border-radius: 28px;
    font-weight: 700;
    font-size: 1rem;
    background: linear-gradient(135deg, var(--accent-green), #00cc6a);
    color: #0a0a0f;
    transition: all var(--transition-smooth);
    box-shadow: var(--shadow-glow-green);
    position: relative;
}

.btn-cta-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 50px rgba(0, 255, 136, 0.45), 0 8px 28px rgba(0, 0, 0, 0.4);
}

.btn-cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 34px;
    border-radius: 28px;
    font-weight: 600;
    font-size: 1rem;
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-medium);
    transition: all var(--transition-smooth);
    position: relative;
    margin-left: 14px;
}

.btn-cta-secondary:hover {
    border-color: var(--accent-green);
    color: var(--accent-green);
    box-shadow: 0 0 24px rgba(0, 255, 136, 0.12);
}

/* ── Footer ── */
.site-footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-subtle);
    padding: 32px 0;
    margin-top: auto;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 16px;
}

.footer-logo {
    font-weight: 700;
    font-size: 1.05rem;
    color: #ffffff;
}

.footer-links {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.footer-copy {
    font-size: 0.78rem;
    color: var(--text-muted);
    text-align: center;
    padding-top: 14px;
    border-top: 1px solid var(--border-subtle);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
    .article-body-wrapper {
        flex-direction: column;
        gap: 32px;
    }
    .article-sidebar {
        width: 100%;
        position: static;
        flex-direction: row;
        flex-wrap: wrap;
        gap: 16px;
    }
    .sidebar-card {
        flex: 1;
        min-width: 240px;
    }
    .article-content {
        padding: 32px 28px;
    }
    .article-hero h1 {
        font-size: 2rem;
    }
    .related-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(10, 10, 15, 0.97);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        padding: 16px 20px;
        gap: 4px;
        border-bottom: 1px solid var(--border-subtle);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
    }
    .nav-links.open {
        display: flex;
    }
    .nav-links a {
        width: 100%;
        padding: 12px 16px;
        border-radius: var(--radius-sm);
    }
    .nav-cta {
        text-align: center;
        margin-top: 6px;
    }
    .nav-toggle {
        display: block;
    }
    .article-hero h1 {
        font-size: 1.55rem;
    }
    .article-hero {
        padding: 36px 0 28px;
    }
    .article-content {
        padding: 24px 18px;
        font-size: 0.98rem;
        border-radius: var(--radius-md);
    }
    .article-content h2 {
        font-size: 1.3rem;
    }
    .article-content h3 {
        font-size: 1.1rem;
    }
    .article-sidebar {
        flex-direction: column;
    }
    .sidebar-card {
        min-width: auto;
    }
    .related-section h2 {
        font-size: 1.4rem;
    }
    .related-grid {
        grid-template-columns: 1fr;
    }
    .cta-section h2 {
        font-size: 1.5rem;
    }
    .btn-cta-secondary {
        margin-left: 0;
        margin-top: 12px;
    }
    .footer-inner {
        flex-direction: column;
        text-align: center;
    }
    .footer-links {
        justify-content: center;
    }
    .breadcrumb .current {
        max-width: 180px;
    }
}

@media (max-width: 520px) {
    .container {
        padding: 0 14px;
    }
    .nav-inner {
        height: 56px;
    }
    .nav-logo {
        font-size: 1.05rem;
        gap: 7px;
    }
    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 0.85rem;
    }
    .article-hero h1 {
        font-size: 1.35rem;
    }
    .article-hero .article-excerpt {
        font-size: 0.95rem;
    }
    .article-content {
        padding: 18px 14px;
        font-size: 0.92rem;
    }
    .article-content h2 {
        font-size: 1.15rem;
    }
    .article-meta-top {
        gap: 8px;
    }
    .article-category-badge {
        font-size: 0.72rem;
        padding: 4px 10px;
    }
    .related-section {
        padding: 36px 0 44px;
    }
    .cta-section {
        padding: 40px 0;
    }
    .breadcrumb {
        font-size: 0.78rem;
    }
}

/* roulang page: category1 */
:root {
            --bg-deep: #060614;
            --bg-card: #0e0e24;
            --bg-card-hover: #141430;
            --bg-panel: #0a0a1e;
            --border-subtle: #1a1a3e;
            --border-glow: #00e5ff33;
            --text-primary: #e8e8f8;
            --text-secondary: #a0a0c0;
            --text-muted: #6a6a8a;
            --accent-cyan: #00e5ff;
            --accent-blue: #3b82f6;
            --accent-magenta: #ff006e;
            --accent-purple: #8b5cf6;
            --glow-cyan: 0 0 18px rgba(0, 229, 255, 0.35);
            --glow-cyan-strong: 0 0 32px rgba(0, 229, 255, 0.55);
            --glow-magenta: 0 0 18px rgba(255, 0, 110, 0.35);
            --glow-purple: 0 0 18px rgba(139, 92, 246, 0.35);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.5);
            --shadow-card-hover: 0 8px 40px rgba(0, 229, 255, 0.18);
            --shadow-btn: 0 4px 16px rgba(0, 229, 255, 0.3);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-height: 68px;
            --container-max: 1200px;
            --section-gap: 80px;
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(6, 6, 20, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            height: var(--nav-height);
            transition: background var(--transition-smooth), border-color var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(6, 6, 20, 0.94);
            border-bottom-color: var(--border-glow);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
            flex-shrink: 0;
        }

        .nav-logo:hover {
            color: var(--accent-cyan);
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            letter-spacing: 0.04em;
            box-shadow: var(--glow-cyan);
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

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

        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 229, 255, 0.08);
            font-weight: 600;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: var(--glow-cyan);
        }

        .nav-cta {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue)) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 10px 22px !important;
            border-radius: 24px !important;
            box-shadow: var(--shadow-btn);
            letter-spacing: 0.02em;
            transition: all var(--transition-smooth) !important;
        }

        .nav-cta:hover {
            box-shadow: var(--glow-cyan-strong) !important;
            transform: translateY(-1px);
            background: linear-gradient(135deg, #00f0ff, #4d94ff) !important;
            color: #fff !important;
        }

        .nav-cta.active {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue)) !important;
            color: #fff !important;
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--text-primary);
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 580px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            margin-top: var(--nav-height);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6, 6, 20, 0.55) 0%, rgba(6, 6, 20, 0.82) 40%, rgba(6, 6, 20, 0.95) 100%);
            z-index: 1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.12) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
            animation: heroPulse 4s ease-in-out infinite;
        }

        @keyframes heroPulse {
            0%,
            100% {
                opacity: 0.6;
                transform: translate(-50%, -50%) scale(1);
            }
            50% {
                opacity: 1;
                transform: translate(-50%, -50%) scale(1.15);
            }
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 750px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 16px;
            border-radius: 20px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.3);
            color: var(--accent-cyan);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }

        .hero-badge i {
            font-size: 0.75rem;
        }

        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #ffffff;
            text-shadow: 0 0 40px rgba(0, 229, 255, 0.3);
        }

        .hero-title span {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 580px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 26px;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all var(--transition-smooth);
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            color: #fff;
            box-shadow: var(--shadow-btn);
            border: none;
        }

        .btn-primary:hover {
            box-shadow: var(--glow-cyan-strong);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: var(--accent-cyan);
            border: 2px solid var(--accent-cyan);
            box-shadow: 0 0 0 rgba(0, 229, 255, 0);
        }

        .btn-outline:hover {
            background: rgba(0, 229, 255, 0.08);
            box-shadow: var(--glow-cyan);
            border-color: #00f0ff;
        }

        .btn-lg {
            padding: 15px 36px;
            border-radius: 30px;
            font-size: 1.1rem;
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--section-gap) 0;
        }

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

        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: #ffffff;
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ========== TOURNAMENT CARDS ========== */
        .tournament-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .tournament-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
            position: relative;
            cursor: pointer;
        }

        .tournament-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            background: var(--bg-card-hover);
        }

        .tournament-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }

        .tournament-card-body {
            padding: 18px 16px;
        }

        .tournament-card-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 8px;
        }

        .tag-live {
            background: rgba(255, 0, 110, 0.15);
            color: var(--accent-magenta);
            border: 1px solid rgba(255, 0, 110, 0.3);
            animation: tagPulse 1.8s ease-in-out infinite;
        }

        @keyframes tagPulse {
            0%,
            100% {
                box-shadow: 0 0 0 rgba(255, 0, 110, 0);
            }
            50% {
                box-shadow: 0 0 12px rgba(255, 0, 110, 0.4);
            }
        }

        .tag-upcoming {
            background: rgba(0, 229, 255, 0.1);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 229, 255, 0.25);
        }

        .tag-hot {
            background: rgba(255, 140, 0, 0.12);
            color: #ff8c00;
            border: 1px solid rgba(255, 140, 0, 0.3);
        }

        .tournament-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 6px;
            line-height: 1.3;
        }

        .tournament-card-info {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

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

        .tournament-card-prize {
            font-weight: 700;
            color: #ffc107;
            font-size: 0.9rem;
            margin-top: 6px;
        }

        /* ========== BRACKET FLOW ========== */
        .bracket-section {
            background: var(--bg-panel);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .bracket-flow {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0;
            flex-wrap: wrap;
            padding: 20px 0;
        }

        .bracket-node {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 18px 24px;
            text-align: center;
            min-width: 100px;
            transition: all var(--transition-smooth);
            position: relative;
        }

        .bracket-node.highlight {
            border-color: var(--accent-cyan);
            box-shadow: var(--glow-cyan);
            background: rgba(0, 229, 255, 0.06);
        }

        .bracket-node-icon {
            font-size: 1.6rem;
            color: var(--accent-cyan);
            margin-bottom: 6px;
        }

        .bracket-node-title {
            font-weight: 700;
            font-size: 0.95rem;
            color: #ffffff;
        }

        .bracket-node-desc {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        .bracket-arrow {
            font-size: 1.8rem;
            color: var(--accent-cyan);
            margin: 0 12px;
            flex-shrink: 0;
            animation: arrowGlow 2s ease-in-out infinite;
        }

        @keyframes arrowGlow {
            0%,
            100% {
                opacity: 0.5;
                text-shadow: 0 0 8px rgba(0, 229, 255, 0.3);
            }
            50% {
                opacity: 1;
                text-shadow: 0 0 20px rgba(0, 229, 255, 0.7);
            }
        }

        /* ========== STATS PANEL ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition-smooth);
        }

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

        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.1;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

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

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            transition: all var(--transition-smooth);
        }

        .feature-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            background: var(--bg-card-hover);
        }

        .feature-icon-wrap {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(0, 229, 255, 0.08);
            margin-bottom: 14px;
            font-size: 1.5rem;
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 229, 255, 0.25);
            transition: all var(--transition-smooth);
        }

        .feature-card:hover .feature-icon-wrap {
            box-shadow: var(--glow-cyan);
            background: rgba(0, 229, 255, 0.14);
            border-color: var(--accent-cyan);
        }

        .feature-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ========== IMAGE SHOWCASE ========== */
        .showcase-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            align-items: center;
        }

        .showcase-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
        }

        .showcase-img img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform var(--transition-smooth);
        }

        .showcase-img:hover img {
            transform: scale(1.03);
        }

        .showcase-text h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }

        .showcase-text p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .showcase-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .showcase-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .showcase-list li i {
            color: var(--accent-cyan);
            font-size: 0.85rem;
            margin-top: 3px;
            flex-shrink: 0;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: var(--border-glow);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: #ffffff;
            cursor: pointer;
            text-align: left;
            transition: color var(--transition-fast);
            gap: 12px;
            background: none;
            border: none;
            font-family: inherit;
        }

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

        .faq-question i {
            transition: transform var(--transition-smooth);
            color: var(--accent-cyan);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.93rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            background: var(--bg-panel);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            text-align: center;
            padding: 70px 24px;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }

        .cta-content {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }

        .cta-content p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 24px;
            line-height: 1.7;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: rgba(6, 6, 20, 0.95);
            border-top: 1px solid var(--border-subtle);
            padding: 32px 0;
        }

        .footer-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 18px;
            margin-bottom: 16px;
        }

        .footer-logo {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }

        .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .footer-links a {
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

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

        .footer-copy {
            font-size: 0.82rem;
            color: var(--text-muted);
            text-align: center;
            padding-top: 14px;
            border-top: 1px solid var(--border-subtle);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            :root {
                --section-gap: 56px;
            }
            .tournament-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .showcase-row {
                grid-template-columns: 1fr;
            }
            .hero-title {
                font-size: 2.4rem;
            }
            .bracket-flow {
                gap: 8px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 44px;
                --nav-height: 60px;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(6, 6, 20, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 14px 20px;
                gap: 4px;
                border-bottom: 2px solid var(--border-subtle);
                display: none;
                z-index: 999;
                box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                justify-content: center;
                border-radius: var(--radius-sm);
            }
            .nav-toggle {
                display: flex;
            }
            .hero-section {
                min-height: 440px;
                padding: 90px 20px 50px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .tournament-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .bracket-flow {
                flex-direction: column;
                gap: 0;
            }
            .bracket-arrow {
                transform: rotate(90deg);
                margin: 4px 0;
            }
            .stat-number {
                font-size: 2rem;
            }
            .cta-content h2 {
                font-size: 1.5rem;
            }
            .footer-inner {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-gap: 36px;
            }
            .container {
                padding: 0 16px;
            }
            .hero-section {
                min-height: 360px;
                padding: 80px 16px 40px;
            }
            .hero-title {
                font-size: 1.6rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .tournament-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .btn {
                padding: 11px 20px;
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 13px 26px;
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .tournament-card-img {
                height: 140px;
            }
            .bracket-node {
                min-width: 80px;
                padding: 14px 18px;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            .hero-buttons .btn {
                width: 100%;
                justify-content: center;
                max-width: 260px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-answer-inner {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0A0A14;
            --bg-secondary: #111122;
            --bg-card: #15152A;
            --bg-card-hover: #1A1A35;
            --bg-panel: #0D0D1F;
            --text-primary: #F0F0F5;
            --text-secondary: #B0B0C8;
            --text-muted: #70708A;
            --accent-purple: #8B5CF6;
            --accent-purple-light: #A78BFA;
            --accent-cyan: #06B6D4;
            --accent-cyan-light: #22D3EE;
            --accent-pink: #EC4899;
            --accent-pink-light: #F472B6;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-glow: rgba(139, 92, 246, 0.3);
            --border-cyan-glow: rgba(6, 182, 212, 0.3);
            --shadow-neon-purple: 0 0 12px rgba(139, 92, 246, 0.45), 0 0 35px rgba(139, 92, 246, 0.2), 0 0 70px rgba(139, 92, 246, 0.08);
            --shadow-neon-cyan: 0 0 12px rgba(6, 182, 212, 0.45), 0 0 35px rgba(6, 182, 212, 0.2), 0 0 70px rgba(6, 182, 212, 0.08);
            --shadow-neon-pink: 0 0 12px rgba(236, 72, 153, 0.4), 0 0 30px rgba(236, 72, 153, 0.18);
            --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.35), 0 0 1px rgba(255, 255, 255, 0.06);
            --shadow-card-hover: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 2px rgba(139, 92, 246, 0.25);
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 22px;
            --radius-xl: 28px;
            --radius-full: 9999px;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --nav-height: 68px;
        }

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

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

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

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

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

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

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

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 10, 20, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            height: var(--nav-height);
            transition: background var(--transition-smooth), border-color var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(10, 10, 20, 0.94);
            border-bottom-color: rgba(255, 255, 255, 0.12);
            box-shadow: 0 2px 24px rgba(0, 0, 0, 0.4);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            transition: opacity var(--transition-fast);
            flex-shrink: 0;
        }

        .nav-logo:hover {
            opacity: 0.85;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
            color: #fff;
            font-weight: 800;
            font-size: 0.9rem;
            letter-spacing: 0.04em;
            box-shadow: var(--shadow-neon-purple);
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .nav-links a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-links a.active {
            color: #fff;
            background: rgba(139, 92, 246, 0.2);
            font-weight: 600;
            box-shadow: 0 0 0 1px rgba(139, 92, 246, 0.35);
        }

        .nav-links a.nav-cta {
            background: linear-gradient(135deg, var(--accent-purple), var(--accent-pink));
            color: #fff;
            font-weight: 600;
            padding: 9px 20px;
            box-shadow: var(--shadow-neon-purple);
            margin-left: 6px;
        }

        .nav-links a.nav-cta:hover {
            box-shadow: 0 0 18px rgba(236, 72, 153, 0.55), 0 0 40px rgba(139, 92, 246, 0.35);
            transform: translateY(-1px);
            background: linear-gradient(135deg, var(--accent-purple-light), var(--accent-pink-light));
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 1.35rem;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.18);
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 580px;
            display: flex;
            align-items: center;
            padding: calc(var(--nav-height) + 40px) 0 60px;
            overflow: hidden;
            background-color: var(--bg-primary);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 10, 20, 0.55) 0%, rgba(10, 10, 20, 0.82) 60%, rgba(10, 10, 20, 0.96) 100%);
            z-index: 1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            top: 30%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.12) 0%, transparent 65%);
            border-radius: 50%;
            z-index: 0;
            pointer-events: none;
            animation: heroPulse 6s ease-in-out infinite;
        }

        @keyframes heroPulse {
            0%,
            100% {
                transform: translate(-50%, -50%) scale(1);
                opacity: 0.7;
            }
            50% {
                transform: translate(-50%, -50%) scale(1.25);
                opacity: 1;
            }
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 16px;
            border-radius: var(--radius-full);
            background: rgba(139, 92, 246, 0.15);
            border: 1px solid rgba(139, 92, 246, 0.3);
            color: var(--accent-purple-light);
            font-size: 0.88rem;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }

        .hero-badge .badge-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-cyan);
            box-shadow: 0 0 8px var(--accent-cyan);
            animation: dotBlink 2s ease-in-out infinite;
        }

        @keyframes dotBlink {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }

        .hero-title {
            font-size: clamp(2.2rem, 4.5vw, 3.4rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 0.01em;
            margin-bottom: 18px;
            color: #fff;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent-cyan-light), var(--accent-purple-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 32px;
            max-width: 560px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 26px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            cursor: pointer;
            text-align: center;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
            color: #fff;
            box-shadow: var(--shadow-neon-purple);
            border: none;
        }

        .btn-primary:hover {
            box-shadow: 0 0 22px rgba(139, 92, 246, 0.6), 0 0 50px rgba(6, 182, 212, 0.35);
            transform: translateY(-2px);
        }

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

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.3);
            backdrop-filter: blur(6px);
        }

        .btn-outline:hover {
            border-color: rgba(255, 255, 255, 0.6);
            background: rgba(255, 255, 255, 0.06);
            box-shadow: 0 0 20px rgba(255, 255, 255, 0.08);
            transform: translateY(-1px);
        }

        .btn-outline:active {
            transform: translateY(0);
        }

        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .hero-stat .stat-num {
            font-size: 1.7rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.02em;
            font-family: var(--font-mono);
        }

        .hero-stat .stat-num.accent-purple {
            color: var(--accent-purple-light);
            text-shadow: 0 0 18px rgba(139, 92, 246, 0.5);
        }

        .hero-stat .stat-num.accent-cyan {
            color: var(--accent-cyan-light);
            text-shadow: 0 0 18px rgba(6, 182, 212, 0.5);
        }

        .hero-stat .stat-num.accent-pink {
            color: var(--accent-pink-light);
            text-shadow: 0 0 18px rgba(236, 72, 153, 0.5);
        }

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

        /* ========== SECTION COMMON ========== */
        .section {
            padding: 80px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: var(--radius-full);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .section-tag.purple {
            background: rgba(139, 92, 246, 0.15);
            color: var(--accent-purple-light);
            border: 1px solid rgba(139, 92, 246, 0.25);
        }

        .section-tag.cyan {
            background: rgba(6, 182, 212, 0.12);
            color: var(--accent-cyan-light);
            border: 1px solid rgba(6, 182, 212, 0.25);
        }

        .section-tag.pink {
            background: rgba(236, 72, 153, 0.12);
            color: var(--accent-pink-light);
            border: 1px solid rgba(236, 72, 153, 0.25);
        }

        .section-title {
            font-size: clamp(1.7rem, 3vw, 2.4rem);
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.01em;
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ========== FEATURES GRID ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 30px 26px 26px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan));
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .feature-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-card .card-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 18px;
            flex-shrink: 0;
        }

        .feature-card .card-icon.icon-purple {
            background: rgba(139, 92, 246, 0.18);
            color: var(--accent-purple-light);
        }

        .feature-card .card-icon.icon-cyan {
            background: rgba(6, 182, 212, 0.18);
            color: var(--accent-cyan-light);
        }

        .feature-card .card-icon.icon-pink {
            background: rgba(236, 72, 153, 0.18);
            color: var(--accent-pink-light);
        }

        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* ========== SCENE CARDS ========== */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .scene-card {
            background: var(--bg-panel);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
            position: relative;
        }

        .scene-card:hover {
            border-color: var(--border-cyan-glow);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .scene-card .scene-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--bg-secondary);
        }

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

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

        .scene-card .scene-img-wrap::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 50%;
            background: linear-gradient(to top, var(--bg-panel), transparent);
            pointer-events: none;
        }

        .scene-card .scene-body {
            padding: 20px 22px 24px;
            position: relative;
            z-index: 1;
            margin-top: -20px;
        }

        .scene-card .scene-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

        .scene-card .scene-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .scene-card .scene-tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 12px;
        }

        .scene-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: var(--radius-full);
            font-size: 0.78rem;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-muted);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        /* ========== FLOW / BRACKET ========== */
        .flow-bracket {
            display: flex;
            align-items: flex-start;
            justify-content: center;
            flex-wrap: wrap;
            gap: 0;
            position: relative;
        }

        .flow-step {
            flex: 0 0 220px;
            text-align: center;
            position: relative;
            padding: 20px 16px;
        }

        .flow-step .step-circle {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            font-weight: 700;
            margin: 0 auto 16px;
            color: #fff;
            position: relative;
            z-index: 2;
            transition: all var(--transition-smooth);
        }

        .flow-step .step-circle.circle-purple {
            background: linear-gradient(135deg, #7C3AED, #8B5CF6);
            box-shadow: 0 0 20px rgba(139, 92, 246, 0.4);
        }

        .flow-step .step-circle.circle-cyan {
            background: linear-gradient(135deg, #0891B2, #06B6D4);
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.4);
        }

        .flow-step .step-circle.circle-pink {
            background: linear-gradient(135deg, #DB2777, #EC4899);
            box-shadow: 0 0 20px rgba(236, 72, 153, 0.4);
        }

        .flow-step .step-circle.circle-green {
            background: linear-gradient(135deg, #059669, #10B981);
            box-shadow: 0 0 20px rgba(16, 185, 129, 0.4);
        }

        .flow-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

        .flow-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .flow-connector {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0 4px;
            margin-top: 28px;
            flex-shrink: 0;
        }

        .flow-connector .connector-line {
            width: 40px;
            height: 2px;
            background: linear-gradient(90deg, rgba(139, 92, 246, 0.5), rgba(6, 182, 212, 0.5));
            border-radius: 1px;
            position: relative;
        }

        .flow-connector .connector-line::after {
            content: '';
            position: absolute;
            right: -7px;
            top: 50%;
            transform: translateY(-50%);
            width: 0;
            height: 0;
            border-left: 8px solid rgba(6, 182, 212, 0.5);
            border-top: 5px solid transparent;
            border-bottom: 5px solid transparent;
        }

        /* ========== STATS PANEL ========== */
        .stats-panel {
            background: var(--bg-panel);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 44px 36px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
            overflow: hidden;
        }

        .stats-panel::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .stat-block {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 10px;
        }

        .stat-block .stat-value {
            font-size: 2.6rem;
            font-weight: 800;
            font-family: var(--font-mono);
            letter-spacing: 0.02em;
            background: linear-gradient(135deg, #fff, var(--accent-cyan-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 4px;
        }

        .stat-block .stat-label-text {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: var(--border-glow);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            text-align: left;
            background: transparent;
            transition: all var(--transition-fast);
            gap: 12px;
        }

        .faq-question:hover {
            color: var(--accent-cyan-light);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            font-size: 0.75rem;
            transition: all var(--transition-smooth);
            color: var(--text-muted);
        }

        .faq-item.open .faq-question .faq-icon {
            background: rgba(139, 92, 246, 0.25);
            color: var(--accent-purple-light);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 22px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            position: relative;
            background-color: var(--bg-secondary);
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            padding: 90px 0;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 10, 20, 0.88) 0%, rgba(17, 17, 34, 0.78) 50%, rgba(10, 10, 20, 0.9) 100%);
            z-index: 1;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.14) 0%, transparent 65%);
            border-radius: 50%;
            z-index: 0;
            pointer-events: none;
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 620px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }

        .cta-content p {
            font-size: 1.08rem;
            color: var(--text-secondary);
            margin-bottom: 30px;
            line-height: 1.7;
        }

        .cta-content .btn {
            font-size: 1.05rem;
            padding: 15px 32px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 36px 0;
        }

        .footer-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 16px;
        }

        .footer-logo {
            font-weight: 700;
            font-size: 1.1rem;
            color: #fff;
            letter-spacing: 0.02em;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }

        .footer-links a {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

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

        .footer-copy {
            font-size: 0.82rem;
            color: var(--text-muted);
            text-align: center;
            padding-top: 14px;
            border-top: 1px solid var(--border-subtle);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scene-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-panel {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
                padding: 32px 24px;
            }
            .flow-bracket {
                gap: 16px;
            }
            .flow-step {
                flex: 0 0 180px;
            }
            .flow-connector {
                display: none;
            }
            .hero-stats-row {
                gap: 20px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                flex-direction: column;
                background: rgba(15, 15, 28, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border-subtle);
                padding: 16px 20px;
                gap: 4px;
                box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .nav-links a.nav-cta {
                margin-left: 0;
                margin-top: 6px;
                justify-content: center;
            }
            .nav-toggle {
                display: flex;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .scene-grid {
                grid-template-columns: 1fr;
                max-width: 440px;
                margin: 0 auto;
            }
            .stats-panel {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
                padding: 28px 18px;
            }
            .stat-block .stat-value {
                font-size: 2rem;
            }
            .flow-bracket {
                flex-direction: column;
                align-items: center;
                gap: 8px;
            }
            .flow-step {
                flex: unset;
                width: 100%;
                max-width: 300px;
                padding: 12px 10px;
            }
            .flow-connector {
                display: block;
                margin-top: 0;
                transform: rotate(90deg);
                padding: 4px 0;
            }
            .hero-section {
                min-height: auto;
                padding: calc(var(--nav-height) + 28px) 0 44px;
            }
            .hero-stats-row {
                gap: 16px;
                flex-wrap: wrap;
            }
            .hero-stat .stat-num {
                font-size: 1.4rem;
            }
            .section {
                padding: 56px 0;
            }
            .cta-section {
                padding: 60px 0;
            }
            .footer-inner {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-stats-row {
                gap: 12px;
                justify-content: center;
            }
            .hero-stat {
                align-items: center;
            }
            .stats-panel {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
                padding: 20px 14px;
            }
            .stat-block .stat-value {
                font-size: 1.7rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-desc {
                font-size: 0.9rem;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.85rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
            .feature-card {
                padding: 22px 18px 20px;
            }
            .scene-card .scene-body {
                padding: 16px 16px 20px;
            }
        }