/* roulang page: index */
:root {
            --bg-primary: #0E1116;
            --bg-secondary: #101216;
            --bg-card: #161A1F;
            --bg-card-hover: #1A1E25;
            --accent: #00E5A0;
            --accent-hover: #00D9A5;
            --accent-glow: rgba(0, 229, 160, 0.15);
            --secondary: #7B5CFF;
            --secondary-light: #8B6FFF;
            --text-primary: #F2F5F7;
            --text-secondary: #A7B1BA;
            --text-muted: #6A7681;
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(0, 229, 160, 0.35);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.4);
            --font-title: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Cascadia Code', 'JetBrains Mono', monospace;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-fast: 0.18s ease-out;
            --container-width: 1200px;
            --section-spacing: 80px;
            --section-spacing-mobile: 48px;
        }

        *,
        *::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-body);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            background-image: radial-gradient(circle at 80% 15%, rgba(123, 92, 255, 0.04), transparent 40%), radial-gradient(circle at 20% 60%, rgba(0, 229, 160, 0.03), transparent 45%);
            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: var(--font-body);
            border: none;
            background: none;
        }

        input,
        select,
        textarea {
            font-family: var(--font-body);
            font-size: 16px;
            outline: none;
        }

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(16, 18, 22, 0.88);
            backdrop-filter: blur(4px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }
        .site-header.scrolled {
            background: rgba(10, 12, 16, 0.95);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.05em;
            color: var(--text-primary);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #0E1116;
            box-shadow: 0 4px 16px var(--accent-glow);
            flex-shrink: 0;
        }
        .logo-icon svg {
            width: 18px;
            height: 18px;
            fill: none;
            stroke: #0E1116;
            stroke-width: 3;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            flex: 1;
            justify-content: center;
        }
        .nav-menu li {
            position: relative;
        }
        .nav-link {
            display: block;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-link.active {
            color: var(--accent);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 12px var(--accent-glow);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            border: 1px solid var(--border);
            transition: all var(--transition-fast);
            background: transparent;
        }
        .search-btn:hover {
            color: var(--accent);
            border-color: var(--border-hover);
        }
        .search-btn svg {
            width: 18px;
            height: 18px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .btn-primary {
            background: var(--accent);
            color: #0E1116;
            font-weight: 700;
            font-size: 15px;
            padding: 10px 22px;
            border-radius: 10px;
            transition: all var(--transition);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            box-shadow: 0 0 20px var(--accent-glow);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-secondary {
            background: transparent;
            color: var(--accent);
            font-weight: 600;
            font-size: 15px;
            padding: 10px 22px;
            border-radius: 10px;
            transition: all var(--transition);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid var(--accent);
        }
        .btn-secondary:hover {
            background: rgba(0, 229, 160, 0.08);
            box-shadow: 0 0 16px rgba(0, 229, 160, 0.1);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            border: 1px solid var(--border);
            background: transparent;
        }
        .hamburger span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        /* Mobile Nav Drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(14, 17, 22, 0.98);
            z-index: 99;
            padding: 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
            border-bottom: 1px solid var(--border);
        }
        .mobile-drawer.open {
            display: flex;
        }
        .mobile-drawer .nav-link {
            font-size: 18px;
            padding: 14px 16px;
            border-radius: var(--radius-md);
            border-bottom: 1px solid var(--border);
        }

        /* Mobile Bottom Tab */
        .mobile-bottom-tabs {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: rgba(16, 18, 22, 0.95);
            border-top: 1px solid var(--border);
            z-index: 100;
            backdrop-filter: blur(4px);
            padding-bottom: env(safe-area-inset-bottom, 0);
        }
        .mobile-bottom-tabs-inner {
            display: flex;
            align-items: stretch;
            height: 100%;
        }
        .bottom-tab {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            font-size: 11px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
            position: relative;
        }
        .bottom-tab.active {
            color: var(--accent);
        }
        .bottom-tab.active::after {
            content: '';
            position: absolute;
            top: 0;
            left: 20%;
            right: 20%;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .bottom-tab svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .bottom-tab span {
            font-size: 11px;
        }

        /* Hero Section */
        .hero {
            position: relative;
            padding: 60px 0 80px;
            overflow: hidden;
            background: linear-gradient(135deg, #0E1116 0%, #12161C 45%, #0A0D10 100%);
            border-bottom: 1px solid var(--border);
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 60%;
            height: 140%;
            background: radial-gradient(circle, rgba(0, 229, 160, 0.05), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 50%;
            height: 80%;
            background: radial-gradient(circle, rgba(123, 92, 255, 0.04), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 55% 45%;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .hero-content {
            padding-right: 20px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            background: rgba(0, 229, 160, 0.08);
            border: 1px solid rgba(0, 229, 160, 0.2);
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 20px;
            letter-spacing: 0.04em;
        }
        .hero-badge svg {
            width: 14px;
            height: 14px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
        }
        .hero-title {
            font-family: var(--font-title);
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: 0.02em;
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        .hero-title .highlight {
            color: var(--accent);
            position: relative;
        }
        .hero-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 32px;
            max-width: 520px;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 32px;
        }
        .hero-live-info {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            padding: 16px 20px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
        }
        .live-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            animation: pulse-dot 2s infinite;
            flex-shrink: 0;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(0, 229, 160, 0.5);
            }
            50% {
                box-shadow: 0 0 0 8px rgba(0, 229, 160, 0);
            }
        }
        .live-text {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
        }
        .live-text span {
            color: var(--text-muted);
            font-weight: 400;
        }
        .countdown {
            font-family: var(--font-mono);
            font-size: 18px;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 0.08em;
        }
        .hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-img-wrap {
            position: relative;
            width: 100%;
            aspect-ratio: 4 / 3;
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
        }
        .hero-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .hero-img-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(14, 17, 22, 0.25), transparent 50%);
            pointer-events: none;
        }
        .hero-ring {
            position: absolute;
            top: -18px;
            right: -18px;
            width: 80px;
            height: 80px;
            border: 2px solid var(--accent);
            border-radius: 50%;
            box-shadow: 0 0 30px var(--accent-glow);
            animation: ring-rotate 8s linear infinite;
            pointer-events: none;
        }
        .hero-ring::after {
            content: '';
            position: absolute;
            top: 10px;
            left: 10px;
            right: 10px;
            bottom: 10px;
            border: 1px dashed var(--secondary-light);
            border-radius: 50%;
        }
        @keyframes ring-rotate {
            0% {
                transform: rotate(0deg);
            }
            100% {
                transform: rotate(360deg);
            }
        }

        /* Section base */
        .section {
            padding: var(--section-spacing) 0;
            border-bottom: 1px solid var(--border);
        }
        .section-alt {
            background: var(--bg-secondary);
        }
        .section-header {
            margin-bottom: 40px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .section-header.center {
            align-items: center;
            text-align: center;
        }
        .section-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(0, 229, 160, 0.06);
            border: 1px solid rgba(0, 229, 160, 0.15);
            border-radius: 100px;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.06em;
            align-self: flex-start;
            margin-bottom: 4px;
        }
        .section-header.center .section-tag {
            align-self: center;
        }
        .section-title {
            font-family: var(--font-title);
            font-size: 30px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            line-height: 1.4;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
            max-width: 640px;
        }
        .section-header.center .section-desc {
            margin: 0 auto;
        }

        /* Card grid */
        .card-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card-grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .card-grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition);
            box-shadow: var(--shadow-card);
        }
        .card:hover {
            border-color: var(--border-hover);
            background: var(--bg-card-hover);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: rgba(0, 229, 160, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            font-size: 22px;
        }
        .card-icon svg {
            width: 24px;
            height: 24px;
            fill: none;
            stroke: var(--accent);
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .card-text {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        .card-meta {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 12px;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* Pain cards */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .pain-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition);
        }
        .pain-card:hover {
            border-color: var(--border-hover);
        }
        .pain-num {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 8px;
            display: block;
        }
        .pain-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* Steps */
        .steps-wrapper {
            display: flex;
            align-items: stretch;
            gap: 20px;
            position: relative;
            flex-wrap: wrap;
        }
        .steps-wrapper::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 60px;
            right: 60px;
            height: 2px;
            background: repeating-linear-gradient(90deg, var(--accent) 0, var(--accent) 6px, transparent 6px, transparent 12px);
            opacity: 0.4;
            pointer-events: none;
        }
        .step-item {
            flex: 1;
            min-width: 180px;
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .step-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid var(--accent);
            font-family: var(--font-mono);
            font-weight: 800;
            font-size: 20px;
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            box-shadow: 0 0 16px var(--accent-glow);
        }
        .step-item h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Data metrics */
        .metrics-band {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: space-between;
            padding: 32px 28px;
            background: linear-gradient(135deg, rgba(0, 229, 160, 0.04), rgba(123, 92, 255, 0.03));
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
        }
        .metric-block {
            flex: 1;
            min-width: 160px;
            text-align: center;
        }
        .metric-num {
            font-family: var(--font-mono);
            font-size: 36px;
            font-weight: 800;
            color: var(--accent);
            letter-spacing: 0.04em;
            display: block;
            margin-bottom: 4px;
        }
        .metric-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* Testimonials */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition);
        }
        .testimonial-card:hover {
            border-color: var(--border-hover);
        }
        .testimonial-text {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
            font-style: normal;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            color: #0E1116;
            flex-shrink: 0;
        }
        .testimonial-author .name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
        }
        .testimonial-author .role {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* News list */
        .news-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .news-item {
            display: flex;
            gap: 16px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px;
            transition: all var(--transition);
            align-items: center;
        }
        .news-item:hover {
            border-color: var(--border-hover);
            background: var(--bg-card-hover);
        }
        .news-thumb {
            width: 100px;
            height: 70px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-info {
            flex: 1;
            min-width: 0;
        }
        .news-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-date {
            font-size: 12px;
            color: var(--text-muted);
        }
        .news-tag {
            font-size: 11px;
            padding: 2px 8px;
            background: rgba(0, 229, 160, 0.08);
            border-radius: 100px;
            color: var(--accent);
            display: inline-block;
            margin-top: 4px;
        }

        /* Info cards for solutions */
        .solution-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 30px 26px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .solution-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), transparent);
            opacity: 0;
            transition: opacity var(--transition);
        }
        .solution-card:hover::before {
            opacity: 1;
        }
        .solution-card:hover {
            border-color: var(--border-hover);
            background: var(--bg-card-hover);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .solution-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .solution-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* Brand intro */
        .brand-intro-card {
            display: grid;
            grid-template-columns: auto 1fr;
            gap: 28px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            align-items: start;
        }
        .brand-symbol {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-title);
            font-weight: 900;
            font-size: 24px;
            color: #0E1116;
            flex-shrink: 0;
        }
        .brand-intro-card .intro-text {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
        }
        .brand-intro-card .intro-text strong {
            color: var(--text-primary);
            font-weight: 700;
        }

        /* Player types */
        .type-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 14px;
        }
        .type-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 18px 14px;
            text-align: center;
            transition: all var(--transition);
        }
        .type-card:hover {
            border-color: var(--border-hover);
            background: var(--bg-card-hover);
        }
        .type-card .type-name {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .type-card .type-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* FAQ */
        .faq-wrapper {
            max-width: 720px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }
        .faq-item.open {
            border-color: var(--border-hover);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            gap: 16px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--text-primary);
            user-select: none;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-toggle {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: all var(--transition-fast);
            font-size: 18px;
            font-weight: 300;
            color: var(--text-secondary);
        }
        .faq-item.open .faq-toggle {
            border-color: var(--accent);
            color: var(--accent);
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.25s ease-out;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        /* CTA section */
        .cta-section {
            padding: var(--section-spacing) 0;
            background: linear-gradient(135deg, rgba(0, 229, 160, 0.06), rgba(123, 92, 255, 0.05));
            border-bottom: 1px solid var(--border);
        }
        .cta-card {
            background: var(--bg-card);
            border: 1px solid var(--border-hover);
            border-radius: var(--radius-xl);
            padding: 48px 36px;
            text-align: center;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
        }
        .cta-card h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .cta-card p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        /* Form */
        .subscribe-form {
            display: flex;
            gap: 10px;
            max-width: 420px;
            margin: 0 auto;
        }
        .subscribe-form input {
            flex: 1;
            padding: 12px 16px;
            background: var(--bg-primary);
            border: 1px solid var(--border);
            border-radius: 10px;
            color: var(--text-primary);
            font-size: 15px;
            transition: border-color var(--transition-fast);
        }
        .subscribe-form input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 16px var(--accent-glow);
        }
        .subscribe-form input::placeholder {
            color: var(--text-muted);
        }

        /* Comparison / Pricing */
        .compare-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        .compare-table {
            width: 100%;
            min-width: 600px;
            border-collapse: separate;
            border-spacing: 0;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
        }
        .compare-table th,
        .compare-table td {
            padding: 16px 20px;
            text-align: left;
            font-size: 14px;
            border-bottom: 1px solid var(--border);
        }
        .compare-table thead th {
            background: rgba(0, 229, 160, 0.05);
            font-weight: 700;
            color: var(--text-primary);
            font-size: 15px;
        }
        .compare-table tbody tr:last-child td {
            border-bottom: none;
        }
        .compare-table tbody td {
            color: var(--text-secondary);
        }
        .compare-table .highlight-col {
            background: rgba(0, 229, 160, 0.04);
        }
        .compare-table .check {
            color: var(--accent);
            font-weight: 700;
        }

        /* Guarantee bar */
        .guarantee-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
        }
        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .guarantee-item svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: var(--accent);
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
            flex-shrink: 0;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            padding: 48px 0 24px;
            border-top: 1px solid var(--border);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-top: 12px;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-col ul a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            padding-top: 20px;
            border-top: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        .footer-links {
            display: flex;
            gap: 16px;
            align-items: center;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero-title {
                font-size: 36px;
            }
            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .type-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .steps-wrapper::before {
                display: none;
            }
            .steps-wrapper {
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }
            .nav-actions .btn-primary {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-bottom-tabs {
                display: block;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .hero-title {
                font-size: 30px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-visual {
                order: -1;
            }
            .hero-img-wrap {
                aspect-ratio: 16 / 9;
            }
            .card-grid-3,
            .card-grid-2,
            .card-grid-4 {
                grid-template-columns: 1fr;
            }
            .pain-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .news-list {
                grid-template-columns: 1fr;
            }
            .type-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .brand-intro-card {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .brand-symbol {
                margin: 0 auto;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section {
                padding: var(--section-spacing-mobile) 0;
            }
            .section-title {
                font-size: 24px;
            }
            .cta-card {
                padding: 32px 20px;
            }
            .cta-card h2 {
                font-size: 22px;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form input,
            .subscribe-form .btn-primary {
                width: 100%;
                justify-content: center;
            }
            .steps-wrapper {
                flex-direction: column;
                gap: 20px;
            }
            .step-item {
                text-align: left;
                display: flex;
                align-items: flex-start;
                gap: 14px;
            }
            .step-circle {
                margin: 0;
                flex-shrink: 0;
                width: 44px;
                height: 44px;
                font-size: 16px;
            }
            .hero-buttons {
                flex-direction: column;
            }
            .hero-buttons .btn-primary,
            .hero-buttons .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .metric-num {
                font-size: 28px;
            }
            .metrics-band {
                padding: 20px 16px;
                gap: 16px;
            }
            .metric-block {
                min-width: 140px;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .hero {
                padding: 40px 0 56px;
            }
            .hero-title {
                font-size: 26px;
                letter-spacing: 0;
            }
            .section-title {
                font-size: 22px;
            }
            .type-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .compare-table {
                font-size: 12px;
            }
            .compare-table th,
            .compare-table td {
                padding: 10px 12px;
            }
            .hero-live-info {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0E1116;
            --bg-secondary: #101216;
            --bg-card: #161A1F;
            --bg-card-hover: #1A1E25;
            --accent: #00E5A0;
            --accent-hover: #00D9A5;
            --accent-glow: rgba(0, 229, 160, 0.15);
            --secondary: #7B5CFF;
            --secondary-light: #8B6FFF;
            --text-primary: #F2F5F7;
            --text-secondary: #A7B1BA;
            --text-muted: #6A7681;
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(0, 229, 160, 0.35);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.4);
            --font-title: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Cascadia Code', 'JetBrains Mono', monospace;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-fast: 0.18s ease-out;
            --container-width: 1200px;
            --section-spacing: 80px;
            --section-spacing-mobile: 48px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            background-image: radial-gradient(circle at 80% 15%, rgba(123, 92, 255, 0.04), transparent 40%), radial-gradient(circle at 20% 60%, rgba(0, 229, 160, 0.03), transparent 45%);
            overflow-x: hidden;
            margin: 0;
            padding: 0;
            min-height: 100vh;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        button {
            cursor: pointer;
            font-family: var(--font-body);
            border: none;
            background: none;
            padding: 0;
        }
        input,
        select,
        textarea {
            font-family: var(--font-body);
            font-size: 16px;
            outline: none;
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            font-family: var(--font-title);
            line-height: 1.35;
            font-weight: 700;
        }
        p {
            margin: 0;
        }
        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(16, 18, 22, 0.88);
            backdrop-filter: blur(4px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }
        .site-header.scrolled {
            background: rgba(10, 12, 16, 0.95);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.05em;
            color: var(--text-primary);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 16px var(--accent-glow);
            flex-shrink: 0;
        }
        .logo-icon svg {
            width: 18px;
            height: 18px;
            fill: none;
            stroke: #0E1116;
            stroke-width: 3;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            flex: 1;
            justify-content: center;
        }
        .nav-menu li {
            position: relative;
        }
        .nav-link {
            display: block;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-link.active {
            color: var(--accent);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 12px var(--accent-glow);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: color var(--transition-fast), background var(--transition-fast);
            flex-shrink: 0;
        }
        .search-btn:hover {
            color: var(--accent);
            background: rgba(0, 229, 160, 0.08);
        }
        .search-btn svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            font-family: var(--font-body);
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-align: center;
            line-height: 1.5;
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--accent);
            color: #0E1116;
            box-shadow: 0 4px 14px var(--accent-glow);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            box-shadow: 0 6px 20px rgba(0, 229, 160, 0.3);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: var(--accent);
            border: 1px solid var(--accent);
        }
        .btn-outline:hover {
            background: rgba(0, 229, 160, 0.08);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            color: var(--text-primary);
            flex-shrink: 0;
            border: 1px solid var(--border);
            background: rgba(255, 255, 255, 0.04);
        }
        .hamburger svg {
            width: 22px;
            height: 22px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .breadcrumb {
            padding: 24px 0 0;
            font-size: 14px;
            color: var(--text-muted);
        }
        .breadcrumb ol {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb li+li::before {
            content: '/';
            color: var(--text-muted);
            font-size: 13px;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .current {
            color: var(--accent);
        }
        .page-head {
            padding: 40px 0 48px;
            border-bottom: 1px solid var(--border);
            position: relative;
        }
        .page-head::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, var(--accent), transparent 60%);
            opacity: 0.3;
        }
        .page-head-inner {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }
        .page-head-text {
            max-width: 680px;
        }
        .page-head h1 {
            font-size: 40px;
            font-weight: 800;
            letter-spacing: 0.02em;
            margin-bottom: 14px;
            color: var(--text-primary);
        }
        .page-head h1 .highlight {
            color: var(--accent);
        }
        .page-head .subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.9;
            max-width: 640px;
        }
        .page-head-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(0, 229, 160, 0.08);
            border: 1px solid rgba(0, 229, 160, 0.2);
            color: var(--accent);
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 18px;
            white-space: nowrap;
        }
        .page-head-badge .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.5);
            }
        }
        .section {
            padding: var(--section-spacing) 0;
        }
        .section-alt {
            background: rgba(16, 18, 22, 0.6);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 12px;
            font-family: var(--font-mono);
        }
        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .section-title {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: 0.015em;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.9;
            margin-bottom: 32px;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px 22px;
            transition: all var(--transition-fast);
            position: relative;
            overflow: hidden;
        }
        .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), transparent);
            opacity: 0.5;
        }
        .stat-card:hover {
            border-color: var(--border-hover);
            background: var(--bg-card-hover);
        }
        .stat-number {
            font-family: var(--font-mono);
            font-size: 36px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 6px;
            letter-spacing: -0.02em;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-card);
        }
        .card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            background: var(--bg-card-hover);
        }
        .card-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
            background: #0A0D10;
        }
        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease-out;
        }
        .card:hover .card-image img {
            transform: scale(1.04);
        }
        .card-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(14, 17, 22, 0.6));
            pointer-events: none;
        }
        .card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }
        .card-tags {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 3px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(0, 229, 160, 0.08);
            color: var(--accent);
            border: 1px solid rgba(0, 229, 160, 0.18);
        }
        .tag-purple {
            background: rgba(123, 92, 255, 0.1);
            color: var(--secondary-light);
            border-color: rgba(123, 92, 255, 0.25);
        }
        .tag-gray {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-secondary);
            border-color: rgba(255, 255, 255, 0.1);
        }
        .card-title {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--text-primary);
            transition: color var(--transition-fast);
        }
        .card:hover .card-title {
            color: var(--accent);
        }
        .card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            flex: 1;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            font-family: var(--font-mono);
            border-top: 1px solid var(--border);
            padding-top: 12px;
            margin-top: 4px;
        }
        .card-meta .sep {
            width: 3px;
            height: 3px;
            border-radius: 50%;
            background: var(--text-muted);
            flex-shrink: 0;
        }
        .highlight-box {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 30px;
            display: flex;
            gap: 28px;
            align-items: center;
            flex-wrap: wrap;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-card);
        }
        .highlight-box:hover {
            border-color: var(--border-hover);
            background: var(--bg-card-hover);
        }
        .highlight-box .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-glow), rgba(123, 92, 255, 0.15));
            border: 1px solid rgba(0, 229, 160, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .highlight-box .icon-wrap svg {
            width: 26px;
            height: 26px;
            fill: none;
            stroke: var(--accent);
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .highlight-box .content {
            flex: 1;
            min-width: 240px;
        }
        .highlight-box h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .highlight-box p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .highlight-box .btn {
            flex-shrink: 0;
        }
        .term-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .term-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: all var(--transition-fast);
        }
        .term-chip:hover {
            border-color: var(--border-hover);
            color: var(--accent);
            background: var(--bg-card-hover);
        }
        .term-chip .num {
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--text-muted);
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border-hover);
            background: var(--bg-card-hover);
        }
        .faq-item[open] {
            border-color: rgba(0, 229, 160, 0.3);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            cursor: pointer;
            transition: color var(--transition-fast);
            background: none;
            border: none;
            font-family: var(--font-body);
            line-height: 1.5;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question .faq-icon {
            width: 22px;
            height: 22px;
            flex-shrink: 0;
            position: relative;
            color: var(--text-muted);
            transition: all var(--transition-fast);
        }
        .faq-question .faq-icon::before,
        .faq-question .faq-icon::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: currentColor;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .faq-question .faq-icon::before {
            width: 14px;
            height: 2px;
        }
        .faq-question .faq-icon::after {
            width: 2px;
            height: 14px;
        }
        .faq-item[open] .faq-icon::after {
            transform: translate(-50%, -50%) rotate(90deg);
            opacity: 0;
        }
        .faq-item[open] .faq-icon {
            color: var(--accent);
        }
        .faq-answer {
            padding: 0 22px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 90%;
        }
        .subscribe-box {
            background: linear-gradient(135deg, rgba(0, 229, 160, 0.06), rgba(123, 92, 255, 0.05));
            border: 1px solid rgba(0, 229, 160, 0.2);
            border-radius: var(--radius-lg);
            padding: 32px 36px;
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
        }
        .subscribe-box .text {
            flex: 1;
            min-width: 260px;
        }
        .subscribe-box h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .subscribe-box p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            flex-shrink: 0;
        }
        .subscribe-form input {
            width: 240px;
            padding: 12px 16px;
            border-radius: 10px;
            background: rgba(14, 17, 22, 0.8);
            border: 1px solid var(--border);
            color: var(--text-primary);
            font-size: 15px;
            transition: all var(--transition-fast);
        }
        .subscribe-form input::placeholder {
            color: var(--text-muted);
        }
        .subscribe-form input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-glow);
        }
        .bottom-tabs {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 99;
            background: rgba(16, 18, 22, 0.95);
            backdrop-filter: blur(8px);
            border-top: 1px solid var(--border);
            height: 60px;
            padding-bottom: env(safe-area-inset-bottom, 0);
        }
        .bottom-tabs-inner {
            display: flex;
            align-items: center;
            height: 100%;
            max-width: 500px;
            margin: 0 auto;
            padding: 0 8px;
        }
        .bottom-tab {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            font-size: 12px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
            padding: 4px 0;
            position: relative;
            height: 100%;
            border: none;
            background: none;
            font-family: var(--font-body);
            cursor: pointer;
        }
        .bottom-tab svg {
            width: 22px;
            height: 22px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .bottom-tab.active {
            color: var(--accent);
        }
        .bottom-tab.active::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 10px var(--accent-glow);
        }
        .bottom-tab:hover {
            color: var(--text-primary);
        }
        .bottom-tab.active:hover {
            color: var(--accent);
        }
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border);
            padding: 48px 0 28px;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-primary);
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 20px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: auto;
        }
        .footer-links a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-links span {
            color: var(--text-muted);
        }
        .mobile-drawer {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 98;
            background: rgba(10, 12, 16, 0.98);
            backdrop-filter: blur(8px);
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 16px;
        }
        .mobile-drawer.open {
            display: flex;
        }
        .mobile-drawer .nav-link {
            font-size: 20px;
            padding: 12px 20px;
        }
        .mobile-drawer .nav-link.active {
            color: var(--accent);
        }
        .mobile-drawer .close-btn {
            position: absolute;
            top: 20px;
            right: 24px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-primary);
            border: 1px solid var(--border);
            background: rgba(255, 255, 255, 0.04);
            font-size: 20px;
        }
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }
            .nav-actions .btn {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .bottom-tabs {
                display: block;
            }
            .mobile-drawer {
                display: none;
            }
            .mobile-drawer.open {
                display: flex;
            }
            body {
                padding-bottom: 60px;
            }
            .container {
                padding: 0 16px;
            }
            .section {
                padding: var(--section-spacing-mobile) 0;
            }
            .section-title {
                font-size: 26px;
            }
            .page-head {
                padding: 28px 0 36px;
            }
            .page-head h1 {
                font-size: 32px;
            }
            .page-head .subtitle {
                font-size: 15px;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 28px;
            }
            .highlight-box {
                padding: 22px 20px;
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }
            .highlight-box .btn {
                width: 100%;
            }
            .subscribe-box {
                padding: 24px 20px;
                flex-direction: column;
                align-items: flex-start;
            }
            .subscribe-form {
                width: 100%;
            }
            .subscribe-form input {
                flex: 1;
                min-width: 0;
                width: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-links {
                margin-left: 0;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }
            .page-head h1 {
                font-size: 27px;
            }
            .section-title {
                font-size: 23px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-number {
                font-size: 24px;
            }
            .stat-label {
                font-size: 12px;
            }
            .card-body {
                padding: 16px 18px 18px;
            }
            .card-title {
                font-size: 16px;
            }
            .card-desc {
                font-size: 13px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 18px 18px;
                font-size: 14px;
                max-width: 100%;
            }
            .subscribe-form input {
                width: 100%;
            }
            .subscribe-form .btn {
                width: 100%;
            }
            .bottom-tab {
                font-size: 11px;
            }
            .bottom-tab svg {
                width: 20px;
                height: 20px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0E1116;
            --bg-secondary: #101216;
            --bg-card: #161A1F;
            --bg-card-hover: #1A1E25;
            --accent: #00E5A0;
            --accent-hover: #00D9A5;
            --accent-glow: rgba(0, 229, 160, 0.15);
            --secondary: #7B5CFF;
            --secondary-light: #8B6FFF;
            --text-primary: #F2F5F7;
            --text-secondary: #A7B1BA;
            --text-muted: #6A7681;
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(0, 229, 160, 0.35);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.4);
            --font-title: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Cascadia Code', 'JetBrains Mono', monospace;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-fast: 0.18s ease-out;
            --container-width: 1200px;
            --section-spacing: 80px;
            --section-spacing-mobile: 48px;
        }

        *,
        *::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-body);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            background-image: radial-gradient(circle at 80% 15%, rgba(123, 92, 255, 0.04), transparent 40%), radial-gradient(circle at 20% 60%, rgba(0, 229, 160, 0.03), transparent 45%);
            overflow-x: hidden;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

        button {
            cursor: pointer;
            font-family: var(--font-body);
            border: none;
            background: none;
        }

        input,
        select,
        textarea {
            font-family: var(--font-body);
            font-size: 16px;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(16, 18, 22, 0.88);
            backdrop-filter: blur(4px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }

        .site-header.scrolled {
            background: rgba(10, 12, 16, 0.95);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.05em;
            color: var(--text-primary);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #0E1116;
            box-shadow: 0 4px 16px var(--accent-glow);
            flex-shrink: 0;
        }

        .logo-icon svg {
            width: 18px;
            height: 18px;
            fill: none;
            stroke: #0E1116;
            stroke-width: 3;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            flex: 1;
            justify-content: center;
        }

        .nav-menu li {
            position: relative;
        }

        .nav-link {
            display: block;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }

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

        .nav-link.active {
            color: var(--accent);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 12px var(--accent-glow);
        }

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

        .search-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            border: 1px solid var(--border);
            background: transparent;
            transition: all var(--transition-fast);
        }

        .search-btn:hover {
            color: var(--accent);
            border-color: var(--border-hover);
            background: var(--accent-glow);
        }

        .search-btn svg {
            width: 18px;
            height: 18px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 700;
            color: #0E1116;
            background: var(--accent);
            border-radius: 10px;
            letter-spacing: 0.04em;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px var(--accent-glow);
        }

        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }

        .hamburger:hover {
            color: var(--accent);
            border-color: var(--border-hover);
        }

        .hamburger svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        /* Mobile drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 99;
            background: rgba(14, 17, 22, 0.98);
            backdrop-filter: blur(8px);
            padding: 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
        }

        .mobile-drawer.open {
            display: flex;
        }

        .mobile-drawer .nav-link {
            font-size: 18px;
            padding: 14px 16px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
        }

        .mobile-drawer .nav-link.active {
            border-color: var(--border-hover);
            background: var(--accent-glow);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding: 24px 0 0;
            background: var(--bg-primary);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

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

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

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

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

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

        .section-alt {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-header {
            margin-bottom: 40px;
        }

        .section-header h2 {
            font-family: var(--font-title);
            font-size: 28px;
            font-weight: 800;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
        }

        .section-tag {
            display: inline-block;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--accent);
            background: var(--accent-glow);
            border-radius: 20px;
            margin-bottom: 12px;
        }

        /* Category Hero */
        .cat-hero {
            padding: 40px 0 32px;
            background: var(--bg-primary);
            position: relative;
            overflow: hidden;
        }

        .cat-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 60%;
            height: 200%;
            background: radial-gradient(ellipse at center, rgba(0, 229, 160, 0.06), transparent 70%);
            pointer-events: none;
        }

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

        .cat-hero-content {
            max-width: 800px;
        }

        .cat-hero h1 {
            font-family: var(--font-title);
            font-size: 42px;
            font-weight: 800;
            letter-spacing: 0.04em;
            color: var(--text-primary);
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .cat-hero .cat-desc {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.9;
            max-width: 680px;
        }

        /* List cards */
        .list-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

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

        .data-card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-card-hover);
            position: relative;
        }

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

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

        .data-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }

        .data-card-title {
            font-family: var(--font-title);
            font-size: 16px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--text-primary);
            transition: color var(--transition-fast);
        }

        .data-card:hover .data-card-title {
            color: var(--accent);
        }

        .data-card-summary {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
        }

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

        .data-card-tag {
            display: inline-block;
            padding: 3px 10px;
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--accent);
            background: var(--accent-glow);
            border-radius: 12px;
        }

        .data-card-tag.purple {
            color: var(--secondary-light);
            background: rgba(123, 92, 255, 0.12);
        }

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

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition);
        }

        .stat-card:hover {
            border-color: var(--border-hover);
            background: var(--bg-card-hover);
            box-shadow: var(--shadow-card);
        }

        .stat-number {
            font-family: var(--font-mono);
            font-size: 38px;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 0.02em;
            margin-bottom: 8px;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* Highlight Card */
        .highlight-card {
            background: linear-gradient(135deg, rgba(0, 229, 160, 0.08), rgba(123, 92, 255, 0.06)), var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-xl);
            padding: 32px;
            display: flex;
            gap: 28px;
            align-items: center;
            transition: all var(--transition);
        }

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

        .highlight-img {
            width: 200px;
            height: 150px;
            border-radius: var(--radius-md);
            overflow: hidden;
            flex-shrink: 0;
        }

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

        .highlight-body {
            flex: 1;
        }

        .highlight-body h3 {
            font-family: var(--font-title);
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .highlight-body p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        .highlight-body .highlight-date {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* Tips */
        .tips-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .tip-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: all var(--transition);
        }

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

        .tip-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--accent-glow);
            color: var(--accent);
            font-family: var(--font-mono);
            font-size: 14px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            border: 1px solid var(--border-hover);
        }

        .tip-content h4 {
            font-family: var(--font-title);
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

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

        /* Term tags */
        .terms-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .term-tag {
            display: inline-block;
            padding: 8px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 20px;
            transition: all var(--transition-fast);
            cursor: default;
        }

        .term-tag:hover {
            color: var(--accent);
            border-color: var(--border-hover);
            background: var(--accent-glow);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 820px;
        }

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

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            font-family: var(--font-title);
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            text-align: left;
            transition: all var(--transition-fast);
        }

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

        .faq-toggle {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 18px;
            font-weight: 700;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-item.open .faq-toggle {
            border-color: var(--border-hover);
            color: var(--accent);
            background: var(--accent-glow);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.25s ease-out;
        }

        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

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

        /* CTA */
        .cta-section {
            padding: var(--section-spacing) 0;
            background: linear-gradient(135deg, rgba(0, 229, 160, 0.06), rgba(123, 92, 255, 0.04)), var(--bg-secondary);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .cta-box {
            background: var(--bg-card);
            border: 1px solid var(--border-hover);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
            transition: all var(--transition);
        }

        .cta-box:hover {
            border-color: var(--accent);
            box-shadow: 0 16px 50px var(--accent-glow);
        }

        .cta-box h2 {
            font-family: var(--font-title);
            font-size: 28px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .cta-box p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 24px;
            line-height: 1.8;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            font-size: 15px;
            font-weight: 700;
            color: #0E1116;
            background: var(--accent);
            border-radius: 10px;
            letter-spacing: 0.04em;
            transition: all var(--transition);
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px var(--accent-glow);
        }

        .btn-secondary-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            font-size: 15px;
            font-weight: 600;
            color: var(--accent);
            background: transparent;
            border: 1px solid var(--accent);
            border-radius: 10px;
            letter-spacing: 0.04em;
            transition: all var(--transition);
        }

        .btn-secondary-btn:hover {
            background: var(--accent-glow);
            transform: translateY(-2px);
            border-color: var(--accent-hover);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border);
            padding: 48px 0 32px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 12px;
            display: inline-flex;
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.06em;
            margin-bottom: 16px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--text-muted);
        }

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

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

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

        /* Mobile bottom tab bar */
        .mobile-tab-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 95;
            height: 56px;
            background: rgba(16, 18, 22, 0.95);
            backdrop-filter: blur(4px);
            border-top: 1px solid var(--border);
            padding-bottom: env(safe-area-inset-bottom);
        }

        .mobile-tab-list {
            display: flex;
            align-items: center;
            justify-content: space-around;
            height: 100%;
            list-style: none;
        }

        .mobile-tab-link {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            font-size: 11px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
            padding: 4px 8px;
            position: relative;
        }

        .mobile-tab-link.active {
            color: var(--accent);
        }

        .mobile-tab-link.active::before {
            content: '';
            position: absolute;
            top: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .mobile-tab-link svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

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

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

            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }

            .footer-col:last-child {
                grid-column: span 1;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-spacing: var(--section-spacing-mobile);
            }

            .nav-menu {
                display: none;
            }

            .nav-actions .nav-cta {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .mobile-tab-bar {
                display: block;
            }

            body {
                padding-bottom: 56px;
            }

            .site-footer {
                padding-bottom: 72px;
            }

            .container {
                padding: 0 16px;
            }

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

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

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

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

            .stat-number {
                font-size: 28px;
            }

            .highlight-card {
                flex-direction: column;
                padding: 24px;
                gap: 16px;
            }

            .highlight-img {
                width: 100%;
                height: 180px;
            }

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

            .cta-box {
                padding: 32px 20px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .footer-brand {
                grid-column: span 2;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .cat-hero h1 {
                font-size: 26px;
            }

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

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

            .stat-number {
                font-size: 26px;
            }

            .cta-actions {
                flex-direction: column;
                width: 100%;
            }

            .cta-actions .btn-primary,
            .cta-actions .btn-secondary-btn {
                width: 100%;
                justify-content: center;
            }

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

            .footer-brand {
                grid-column: span 1;
            }

            .section-header h2 {
                font-size: 22px;
                line-height: 1.4;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                transition-duration: 0.01ms !important;
                animation-duration: 0.01ms !important;
            }
        }

        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

/* roulang page: category4 */
:root {
            --bg-primary: #0E1116;
            --bg-secondary: #101216;
            --bg-card: #161A1F;
            --bg-card-hover: #1A1E25;
            --accent: #00E5A0;
            --accent-hover: #00D9A5;
            --accent-glow: rgba(0, 229, 160, 0.15);
            --secondary: #7B5CFF;
            --secondary-light: #8B6FFF;
            --text-primary: #F2F5F7;
            --text-secondary: #A7B1BA;
            --text-muted: #6A7681;
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(0, 229, 160, 0.35);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.4);
            --font-title: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Cascadia Code', 'JetBrains Mono', monospace;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-fast: 0.18s ease-out;
            --container-width: 1200px;
            --section-spacing: 80px;
            --section-spacing-mobile: 48px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            background-image: radial-gradient(circle at 80% 15%, rgba(123, 92, 255, 0.04), transparent 40%), radial-gradient(circle at 20% 60%, rgba(0, 229, 160, 0.03), transparent 45%);
            overflow-x: hidden;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        button {
            cursor: pointer;
            font-family: var(--font-body);
            border: none;
            background: none;
            color: inherit;
        }
        input,
        select,
        textarea {
            font-family: var(--font-body);
            font-size: 16px;
            outline: none;
        }
        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(16, 18, 22, 0.88);
            backdrop-filter: blur(4px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }
        .site-header.scrolled {
            background: rgba(10, 12, 16, 0.95);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.05em;
            color: var(--text-primary);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #0E1116;
            box-shadow: 0 4px 16px var(--accent-glow);
            flex-shrink: 0;
        }
        .logo-icon svg {
            width: 18px;
            height: 18px;
            fill: none;
            stroke: #0E1116;
            stroke-width: 3;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            flex: 1;
            justify-content: center;
            margin: 0;
            padding: 0;
        }
        .nav-menu li {
            position: relative;
        }
        .nav-link {
            display: block;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-link.active {
            color: var(--accent);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 12px var(--accent-glow);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            border: 1px solid var(--border);
            transition: all var(--transition-fast);
            background: rgba(255, 255, 255, 0.02);
        }
        .search-btn:hover {
            color: var(--accent);
            border-color: var(--border-hover);
            background: rgba(0, 229, 160, 0.06);
        }
        .search-btn svg {
            width: 18px;
            height: 18px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: 10px;
            background: var(--accent);
            color: #0E1116;
            font-weight: 700;
            font-size: 14px;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            border: 1px solid var(--accent);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            box-shadow: 0 4px 24px var(--accent-glow);
            transform: translateY(-2px);
        }
        .btn-primary:focus-visible,
        .btn-secondary:focus-visible,
        .search-btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: 10px;
            background: transparent;
            color: var(--accent);
            font-weight: 700;
            font-size: 14px;
            border: 1px solid var(--accent);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: rgba(0, 229, 160, 0.08);
            border-color: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 4px 20px rgba(0, 229, 160, 0.1);
        }
        .mobile-menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            align-items: center;
            justify-content: center;
            color: var(--text-primary);
            border: 1px solid var(--border);
            background: rgba(255, 255, 255, 0.02);
            transition: all var(--transition-fast);
        }
        .mobile-menu-toggle svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .mobile-menu-toggle:hover {
            border-color: var(--border-hover);
            color: var(--accent);
        }
        /* Mobile Drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(10, 12, 16, 0.97);
            z-index: 99;
            padding: 24px;
            flex-direction: column;
            gap: 4px;
            overflow-y: auto;
        }
        .mobile-drawer.open {
            display: flex;
        }
        .mobile-drawer .nav-link {
            font-size: 18px;
            padding: 14px 16px;
            border-radius: var(--radius-md);
        }
        .mobile-drawer .nav-link.active {
            background: rgba(0, 229, 160, 0.08);
        }
        .mobile-drawer .nav-link.active::after {
            display: none;
        }
        /* Bottom Mobile Tab */
        .bottom-tab-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: rgba(16, 18, 22, 0.95);
            backdrop-filter: blur(8px);
            border-top: 1px solid var(--border);
            z-index: 99;
            padding: 0 8px;
            justify-content: space-around;
            align-items: center;
        }
        .bottom-tab {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            font-size: 12px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
            padding: 6px 10px;
            border-radius: 6px;
            min-width: 56px;
        }
        .bottom-tab svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .bottom-tab.active {
            color: var(--accent);
        }
        .bottom-tab:hover {
            color: var(--text-primary);
        }
        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            padding: 20px 0 0;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .separator {
            color: var(--text-muted);
            font-size: 12px;
        }
        .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 500;
        }
        /* Section Base */
        .section {
            padding: var(--section-spacing) 0;
        }
        .section-title {
            font-family: var(--font-title);
            font-size: 28px;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            margin: 0 0 12px;
            line-height: 1.4;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin: 0 0 32px;
            line-height: 1.8;
            max-width: 640px;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header .section-title {
            margin-bottom: 8px;
        }
        /* Page Hero */
        .page-hero {
            padding: 56px 0 40px;
            background: linear-gradient(180deg, rgba(0, 229, 160, 0.04) 0%, transparent 100%);
            border-bottom: 1px solid var(--border);
        }
        .page-hero h1 {
            font-family: var(--font-title);
            font-size: 42px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            margin: 0 0 12px;
            letter-spacing: 0.02em;
        }
        .page-hero .hero-desc {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin: 0;
            max-width: 740px;
        }
        /* Cards Grid */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 24px;
        }
        .card-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }
        .card-item:hover {
            border-color: var(--border-hover);
            background: var(--bg-card-hover);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .card-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
            background: #1A1E25;
        }
        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .card-item:hover .card-image img {
            transform: scale(1.03);
        }
        .card-body {
            padding: 20px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .card-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.03em;
            background: rgba(0, 229, 160, 0.1);
            color: var(--accent);
            width: fit-content;
        }
        .card-title {
            font-family: var(--font-title);
            font-size: 17px;
            font-weight: 700;
            line-height: 1.55;
            color: var(--text-primary);
            margin: 0;
        }
        .card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
            flex: 1;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }
        .card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        /* Stats Bar */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
        }
        .stat-block {
            text-align: center;
        }
        .stat-number {
            font-family: var(--font-mono);
            font-size: 36px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 6px;
            line-height: 1.5;
        }
        /* Highlight Card */
        .highlight-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .highlight-image {
            aspect-ratio: 4/3;
            overflow: hidden;
            background: #1A1E25;
        }
        .highlight-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .highlight-body {
            padding: 32px 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 12px;
        }
        .highlight-body h3 {
            font-family: var(--font-title);
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0;
            line-height: 1.4;
        }
        .highlight-body p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
        }
        .highlight-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(123, 92, 255, 0.12);
            color: var(--secondary-light);
            width: fit-content;
        }
        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border-hover);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            width: 100%;
            text-align: left;
            transition: color var(--transition-fast);
            gap: 12px;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-icon {
            font-size: 22px;
            font-weight: 400;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            flex-shrink: 0;
            line-height: 1;
        }
        .faq-item.open .faq-icon {
            color: var(--accent);
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.25s ease-out;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 229, 160, 0.06) 0%, rgba(123, 92, 255, 0.05) 100%);
            border: 1px solid var(--border);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }
        .cta-section h2 {
            font-family: var(--font-title);
            font-size: 28px;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 12px;
            line-height: 1.4;
        }
        .cta-section p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 24px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        /* Footer */
        .site-footer {
            background: #0A0C10;
            border-top: 1px solid var(--border);
            padding: 56px 0 32px;
            margin-top: var(--section-spacing);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin: 0;
            max-width: 280px;
        }
        .footer-col h4 {
            font-family: var(--font-title);
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 14px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-col ul a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-links a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
            font-size: 13px;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-links span {
            color: var(--text-muted);
            opacity: 0.5;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section-spacing: var(--section-spacing-mobile);
            }
            .nav-menu {
                display: none;
            }
            .nav-actions .btn-primary {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .bottom-tab-bar {
                display: flex;
            }
            body {
                padding-bottom: 56px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .page-hero {
                padding: 36px 0 28px;
            }
            .section-title {
                font-size: 24px;
            }
            .cards-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .highlight-card {
                grid-template-columns: 1fr;
            }
            .highlight-body {
                padding: 24px 20px;
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                padding: 20px 16px;
                gap: 16px;
            }
            .stat-number {
                font-size: 28px;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .cta-section h2 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .container {
                padding: 0 16px;
            }
            .nav-container {
                height: 60px;
            }
            .logo {
                font-size: 19px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
            }
            .logo-icon svg {
                width: 15px;
                height: 15px;
            }
            .mobile-drawer {
                top: 60px;
            }
            .section {
                padding: 48px 0;
            }
            .site-footer {
                padding: 40px 0 100px;
                margin-top: 48px;
            }
        }
        @media (max-width: 480px) {
            .page-hero h1 {
                font-size: 26px;
            }
            .section-title {
                font-size: 22px;
            }
            .cards-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
                padding: 16px 12px;
            }
            .stat-number {
                font-size: 24px;
            }
            .stat-label {
                font-size: 12px;
            }
            .container {
                padding: 0 14px;
            }
            .bottom-tab-bar {
                height: 52px;
            }
            .bottom-tab {
                font-size: 11px;
                padding: 4px 6px;
            }
            .bottom-tab svg {
                width: 18px;
                height: 18px;
            }
            body {
                padding-bottom: 52px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0E1116;
            --bg-secondary: #101216;
            --bg-card: #161A1F;
            --bg-card-hover: #1A1E25;
            --accent: #00E5A0;
            --accent-hover: #00D9A5;
            --accent-glow: rgba(0, 229, 160, 0.15);
            --secondary: #7B5CFF;
            --secondary-light: #8B6FFF;
            --text-primary: #F2F5F7;
            --text-secondary: #A7B1BA;
            --text-muted: #6A7681;
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(0, 229, 160, 0.35);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.4);
            --font-title: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Cascadia Code', 'JetBrains Mono', monospace;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-fast: 0.18s ease-out;
            --container-width: 1200px;
            --section-spacing: 80px;
            --section-spacing-mobile: 48px;
        }

        *,
        *::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-body);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            background-image: radial-gradient(circle at 80% 15%, rgba(123, 92, 255, 0.04), transparent 40%), radial-gradient(circle at 20% 60%, rgba(0, 229, 160, 0.03), transparent 45%);
            overflow-x: hidden;
            min-height: 100vh;
            padding-bottom: 0;
        }

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

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

        button {
            cursor: pointer;
            font-family: var(--font-body);
            border: none;
            background: none;
        }

        input,
        select,
        textarea {
            font-family: var(--font-body);
            font-size: 16px;
            outline: none;
        }

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(16, 18, 22, 0.88);
            backdrop-filter: blur(4px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }

        .site-header.scrolled {
            background: rgba(10, 12, 16, 0.95);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.05em;
            color: var(--text-primary);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #0E1116;
            box-shadow: 0 4px 16px var(--accent-glow);
            flex-shrink: 0;
        }

        .logo-icon svg {
            width: 18px;
            height: 18px;
            fill: none;
            stroke: #0E1116;
            stroke-width: 3;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            flex: 1;
            justify-content: center;
        }

        .nav-menu li {
            position: relative;
        }

        .nav-link {
            display: block;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }

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

        .nav-link.active {
            color: var(--accent);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 12px var(--accent-glow);
        }

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

        .search-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: color var(--transition-fast), background var(--transition-fast);
        }

        .search-btn:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .search-btn svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            font-size: 14px;
            font-weight: 600;
            color: #0E1116;
            background: var(--accent);
            border-radius: 10px;
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--accent-hover);
            box-shadow: 0 4px 20px var(--accent-glow);
            transform: translateY(-2px);
            color: #0E1116;
        }

        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            color: var(--text-secondary);
            transition: background var(--transition-fast);
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: currentColor;
            border-radius: 2px;
            transition: transform var(--transition-fast), opacity var(--transition-fast);
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Mobile drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(14, 17, 22, 0.98);
            z-index: 99;
            padding: 24px;
            overflow-y: auto;
            transform: translateX(-100%);
            transition: transform var(--transition);
        }

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

        .mobile-drawer ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .mobile-drawer .nav-link {
            font-size: 18px;
            padding: 14px 16px;
            border-bottom: 1px solid var(--border);
            border-radius: 0;
        }

        .mobile-drawer .nav-link.active {
            color: var(--accent);
            background: rgba(0, 229, 160, 0.06);
        }

        .mobile-drawer .nav-link.active::after {
            display: none;
        }

        /* Mobile bottom tab bar */
        .mobile-tabbar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 90;
            background: rgba(14, 17, 22, 0.96);
            border-top: 1px solid var(--border);
            backdrop-filter: blur(4px);
            height: 56px;
            padding-bottom: env(safe-area-inset-bottom, 0);
        }

        .mobile-tabbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-around;
            height: 56px;
            max-width: 500px;
            margin: 0 auto;
            padding: 0 8px;
        }

        .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            padding: 4px 10px;
            font-size: 12px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
            border-radius: var(--radius-sm);
            min-width: 56px;
        }

        .tab-item svg {
            width: 22px;
            height: 22px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .tab-item.active {
            color: var(--accent);
        }

        .tab-item:hover {
            color: var(--text-primary);
        }

        /* Category Hero */
        .category-hero {
            padding: 48px 0 40px;
            background: linear-gradient(135deg, rgba(0, 229, 160, 0.04), rgba(123, 92, 255, 0.04));
            border-bottom: 1px solid var(--border);
        }

        .category-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

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

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

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

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

        .category-hero h1 {
            font-family: var(--font-title);
            font-size: 40px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 12px;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }

        .category-hero .hero-desc {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.9;
        }

        .category-hero .hero-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 16px;
            font-size: 14px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .hero-meta .meta-dot {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .hero-meta .meta-dot::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }

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

        .section-alt {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 32px;
            flex-wrap: wrap;
        }

        .section-head h2 {
            font-family: var(--font-title);
            font-size: 30px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.01em;
            line-height: 1.4;
        }

        .section-head .section-sub {
            font-size: 15px;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        .section-head .view-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            padding: 8px 16px;
            border: 1px solid var(--border-hover);
            border-radius: 10px;
            transition: background var(--transition-fast), border-color var(--transition-fast);
            white-space: nowrap;
        }

        .section-head .view-more:hover {
            background: var(--accent-glow);
            border-color: var(--accent);
        }

        /* Guide cards grid */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .guide-card .card-img {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

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

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

        .guide-card .card-img .img-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(to bottom, transparent 55%, rgba(14, 17, 22, 0.5));
            pointer-events: none;
        }

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

        .guide-card .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            padding: 4px 10px;
            border: 1px solid var(--border-hover);
            border-radius: 20px;
            margin-bottom: 10px;
            align-self: flex-start;
            letter-spacing: 0.02em;
        }

        .guide-card h3 {
            font-family: var(--font-title);
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .guide-card .card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            flex: 1;
        }

        .guide-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 14px;
            padding-top: 12px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-muted);
        }

        .card-meta .meta-left {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .card-meta .meta-date {
            font-family: var(--font-mono);
            font-size: 12px;
        }

        .card-meta .meta-tag {
            font-size: 12px;
            color: var(--secondary-light);
            background: rgba(123, 92, 255, 0.1);
            padding: 2px 8px;
            border-radius: 4px;
        }

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

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }

        .stat-card:hover {
            border-color: var(--border-hover);
            background: var(--bg-card-hover);
        }

        .stat-card .stat-number {
            font-family: var(--font-mono);
            font-size: 34px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 6px;
            letter-spacing: -0.02em;
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* Highlight card */
        .highlight-card {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 32px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: border-color var(--transition);
        }

        .highlight-card:hover {
            border-color: var(--border-hover);
        }

        .highlight-card .highlight-content {
            padding: 32px 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .highlight-content .highlight-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 700;
            color: var(--secondary-light);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .highlight-content h3 {
            font-family: var(--font-title);
            font-size: 24px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.5;
            margin-bottom: 12px;
        }

        .highlight-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
        }

        .highlight-content .highlight-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 18px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            transition: color var(--transition-fast);
        }

        .highlight-content .highlight-link:hover {
            color: var(--accent-hover);
        }

        .highlight-card .highlight-img {
            min-height: 260px;
            overflow: hidden;
        }

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

        /* Beginner tips */
        .tips-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            list-style: none;
        }

        .tips-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }

        .tips-list li:hover {
            border-color: var(--border-hover);
            background: var(--bg-card-hover);
        }

        .tips-list .tip-num {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--accent-glow);
            color: var(--accent);
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 13px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .tips-list .tip-text {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

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

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 16px;
            line-height: 1.5;
            transition: color var(--transition-fast);
            text-align: left;
            width: 100%;
        }

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

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 500;
            color: var(--text-muted);
            flex-shrink: 0;
            transition: border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
        }

        .faq-item.open .faq-icon {
            border-color: var(--accent);
            color: var(--accent);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition), padding var(--transition);
            padding: 0 22px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.9;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding-bottom: 18px;
        }

        .faq-answer p {
            margin-bottom: 0;
        }

        /* CTA section */
        .cta-section {
            padding: 56px 0;
            background: linear-gradient(135deg, rgba(0, 229, 160, 0.06), rgba(123, 92, 255, 0.06));
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .cta-box {
            text-align: center;
            padding: 32px 24px;
        }

        .cta-box h2 {
            font-family: var(--font-title);
            font-size: 28px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .cta-box p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 22px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-box .cta-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 700;
            color: #0E1116;
            background: var(--accent);
            border-radius: 10px;
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            box-shadow: 0 6px 24px var(--accent-glow);
            transform: translateY(-2px);
            color: #0E1116;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            color: var(--accent);
            background: transparent;
            border: 1px solid var(--border-hover);
            border-radius: 10px;
            transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
        }

        .btn-secondary:hover {
            background: var(--accent-glow);
            border-color: var(--accent);
            transform: translateY(-2px);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border);
            padding: 48px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--border);
        }

        .footer-brand .logo {
            margin-bottom: 14px;
            font-size: 20px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-col h4 {
            font-family: var(--font-title);
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
            display: inline-block;
        }

        .footer-col ul li a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 24px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .footer-bottom .footer-links {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
        }

        .footer-bottom .footer-links a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom .footer-links span {
            color: var(--text-muted);
            opacity: 0.5;
        }

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

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }

            .highlight-card {
                grid-template-columns: 1fr;
            }

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

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .mobile-drawer {
                display: block;
            }

            .mobile-tabbar {
                display: block;
            }

            body {
                padding-bottom: 56px;
            }

            .category-hero {
                padding: 32px 0 28px;
            }

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

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

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

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

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

            .guide-card .card-img {
                height: 180px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }

            .stat-card {
                padding: 16px 12px;
            }

            .stat-card .stat-number {
                font-size: 26px;
            }

            .stat-card .stat-label {
                font-size: 12px;
            }

            .highlight-card .highlight-content {
                padding: 24px 20px;
            }

            .highlight-content h3 {
                font-size: 20px;
            }

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

            .tips-list li {
                padding: 14px 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
        }

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

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

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

            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 8px;
            }

            .stat-card .stat-number {
                font-size: 22px;
            }

            .stat-card .stat-label {
                font-size: 11px;
            }

            .guide-card .card-body {
                padding: 16px 14px 18px;
            }

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

            .faq-question {
                padding: 14px 16px;
                font-size: 15px;
            }

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

            .faq-item.open .faq-answer {
                padding-bottom: 14px;
            }

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

            .btn-primary,
            .btn-secondary {
                padding: 10px 20px;
                font-size: 14px;
            }
        }

/* roulang page: category5 */
:root {
            --bg-primary: #0E1116;
            --bg-secondary: #101216;
            --bg-card: #161A1F;
            --bg-card-hover: #1A1E25;
            --accent: #00E5A0;
            --accent-hover: #00D9A5;
            --accent-glow: rgba(0, 229, 160, 0.15);
            --secondary: #7B5CFF;
            --secondary-light: #8B6FFF;
            --text-primary: #F2F5F7;
            --text-secondary: #A7B1BA;
            --text-muted: #6A7681;
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(0, 229, 160, 0.35);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.4);
            --font-title: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Cascadia Code', 'JetBrains Mono', monospace;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-fast: 0.18s ease-out;
            --container-width: 1200px;
            --section-spacing: 80px;
            --section-spacing-mobile: 48px;
        }

        *,
        *::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-body);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            background-image: radial-gradient(circle at 80% 15%, rgba(123, 92, 255, 0.04), transparent 40%), radial-gradient(circle at 20% 60%, rgba(0, 229, 160, 0.03), transparent 45%);
            overflow-x: hidden;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

        button {
            cursor: pointer;
            font-family: var(--font-body);
            border: none;
            background: none;
        }

        input,
        select,
        textarea {
            font-family: var(--font-body);
            font-size: 16px;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(16, 18, 22, 0.88);
            backdrop-filter: blur(4px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }

        .site-header.scrolled {
            background: rgba(10, 12, 16, 0.95);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.05em;
            color: var(--text-primary);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #0E1116;
            box-shadow: 0 4px 16px var(--accent-glow);
            flex-shrink: 0;
        }

        .logo-icon svg {
            width: 18px;
            height: 18px;
            fill: none;
            stroke: #0E1116;
            stroke-width: 3;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            flex: 1;
            justify-content: center;
        }

        .nav-menu li {
            position: relative;
        }

        .nav-link {
            display: block;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }

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

        .nav-link.active {
            color: var(--accent);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 12px var(--accent-glow);
        }

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

        .search-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: color var(--transition-fast), background var(--transition-fast);
        }

        .search-btn:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }

        .search-btn svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: var(--accent);
            color: #0E1116;
            font-weight: 700;
            font-size: 14px;
            border-radius: 10px;
            transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px var(--accent-glow);
        }

        .nav-cta:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            color: var(--text-secondary);
            transition: color var(--transition-fast), background var(--transition-fast);
        }

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

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: currentColor;
            border-radius: 2px;
            transition: transform var(--transition-fast), opacity var(--transition-fast);
        }

        .mobile-drawer {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(14, 17, 22, 0.97);
            backdrop-filter: blur(8px);
            z-index: 99;
            padding: 20px 24px;
            overflow-y: auto;
            transform: translateX(-100%);
            transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        .mobile-drawer .nav-link {
            font-size: 18px;
            padding: 14px 8px;
            display: block;
            border-bottom: 1px solid var(--border);
        }

        .mobile-drawer .nav-link.active::after {
            display: none;
        }

        .mobile-drawer .nav-link.active {
            background: rgba(0, 229, 160, 0.06);
            color: var(--accent);
        }

        /* Main */
        .site-main {
            flex: 1;
        }

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

        .section-alt {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-header {
            margin-bottom: 36px;
        }

        .section-header h2 {
            font-family: var(--font-title);
            font-size: 30px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 12px;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }

        .section-header p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            background: rgba(0, 229, 160, 0.08);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            border-radius: 20px;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        /* Category Hero */
        .category-hero {
            padding: 64px 0 48px;
            background:
                radial-gradient(circle at 70% 30%, rgba(0, 229, 160, 0.05), transparent 50%),
                radial-gradient(circle at 20% 60%, rgba(123, 92, 255, 0.04), transparent 40%),
                var(--bg-primary);
            border-bottom: 1px solid var(--border);
        }

        .category-hero .container {
            display: flex;
            align-items: flex-start;
            gap: 48px;
            flex-wrap: wrap;
        }

        .category-hero-content {
            flex: 1 1 560px;
            min-width: 0;
        }

        .category-hero h1 {
            font-family: var(--font-title);
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            margin-bottom: 16px;
        }

        .category-hero h1 .highlight {
            color: var(--accent);
        }

        .category-hero-desc {
            font-size: 18px;
            color: var(--text-secondary);
            line-height: 1.9;
            max-width: 620px;
        }

        .category-hero-stats {
            flex: 0 0 280px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            align-self: center;
        }

        .hero-stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 20px 16px;
            text-align: center;
            transition: border-color var(--transition-fast), transform var(--transition-fast);
        }

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

        .hero-stat-card .stat-number {
            font-family: var(--font-mono);
            font-size: 32px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
        }

        .hero-stat-card .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* Breadcrumb */
        .breadcrumb {
            padding: 16px 0;
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border);
            font-size: 14px;
            color: var(--text-muted);
        }

        .breadcrumb .container {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: var(--text-muted);
            font-size: 12px;
        }

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

        /* Player cards */
        .player-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .player-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
        }

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

        .player-card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #1A1E25;
        }

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

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

        .player-card-img::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(to top, rgba(14, 17, 22, 0.6), transparent 50%);
            pointer-events: none;
        }

        .player-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 1;
            padding: 4px 10px;
            background: rgba(14, 17, 22, 0.8);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            border-radius: 20px;
            backdrop-filter: blur(4px);
        }

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

        .player-card-title {
            font-family: var(--font-title);
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .player-card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }

        .player-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }

        .player-card-meta .meta-tag {
            color: var(--secondary-light);
            font-weight: 500;
        }

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

        .snapshot-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            transition: border-color var(--transition-fast), transform var(--transition-fast);
        }

        .snapshot-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-2px);
        }

        .snapshot-card .snap-number {
            font-family: var(--font-mono);
            font-size: 36px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
        }

        .snapshot-card .snap-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 8px;
        }

        /* Highlight */
        .highlight-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-xl);
            overflow: hidden;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
        }

        .highlight-card-img {
            position: relative;
            min-height: 320px;
            overflow: hidden;
        }

        .highlight-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }

        .highlight-card-body {
            padding: 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .highlight-card-body h3 {
            font-family: var(--font-title);
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .highlight-card-body p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 16px;
        }

        .highlight-card-body .highlight-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            background: rgba(123, 92, 255, 0.12);
            color: var(--secondary-light);
            font-size: 13px;
            font-weight: 600;
            border-radius: 20px;
            align-self: flex-start;
            margin-bottom: 12px;
        }

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

        .term-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 20px;
            font-size: 14px;
            color: var(--text-secondary);
            transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
        }

        .term-tag:hover {
            border-color: var(--border-hover);
            color: var(--accent);
            background: rgba(0, 229, 160, 0.05);
        }

        .term-tag .term-index {
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 820px;
            margin: 0 auto;
        }

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

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

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

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(0, 229, 160, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--accent);
            transition: transform var(--transition-fast), background var(--transition-fast);
            line-height: 1;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background: rgba(0, 229, 160, 0.15);
        }

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

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

        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 229, 160, 0.05), rgba(123, 92, 255, 0.05)), var(--bg-secondary);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 72px 0;
        }

        .cta-box {
            background: var(--bg-card);
            border: 1px solid var(--border-hover);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
            box-shadow: 0 12px 48px rgba(0, 0, 0, 0.3);
        }

        .cta-box h2 {
            font-family: var(--font-title);
            font-size: 30px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .cta-box p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 24px;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            background: var(--accent);
            color: #0E1116;
            font-weight: 700;
            font-size: 15px;
            border-radius: 10px;
            transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px var(--accent-glow);
        }

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

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            background: transparent;
            color: var(--accent);
            font-weight: 600;
            font-size: 15px;
            border-radius: 10px;
            border: 1px solid var(--accent);
            transition: background var(--transition-fast), transform var(--transition-fast);
        }

        .btn-secondary:hover {
            background: rgba(0, 229, 160, 0.08);
            transform: translateY(-2px);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border);
            padding: 56px 0 0;
            margin-top: 0;
        }

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

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-top: 12px;
            max-width: 300px;
        }

        .footer-col h4 {
            font-family: var(--font-title);
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }

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

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

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

        /* Mobile bottom tab */
        .mobile-tab-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: rgba(16, 18, 22, 0.95);
            backdrop-filter: blur(8px);
            border-top: 1px solid var(--border);
            z-index: 100;
            padding-bottom: env(safe-area-inset-bottom, 0);
        }

        .mobile-tab-bar-inner {
            display: flex;
            align-items: center;
            justify-content: space-around;
            height: 100%;
        }

        .mobile-tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            font-size: 12px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
            flex: 1;
            height: 100%;
            position: relative;
        }

        .mobile-tab-item svg {
            width: 22px;
            height: 22px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .mobile-tab-item.active {
            color: var(--accent);
        }

        .mobile-tab-item.active::before {
            content: '';
            position: absolute;
            top: 0;
            left: 20%;
            right: 20%;
            height: 2px;
            background: var(--accent);
            border-radius: 0 0 4px 4px;
            box-shadow: 0 2px 10px var(--accent-glow);
        }

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

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

            .highlight-card {
                grid-template-columns: 1fr;
            }

            .highlight-card-img {
                min-height: 200px;
            }

            .highlight-card-img img {
                position: static;
                height: auto;
            }

            .category-hero .container {
                flex-direction: column;
            }

            .category-hero-stats {
                flex: 1 1 auto;
                width: 100%;
                grid-template-columns: repeat(4, 1fr);
            }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }

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

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

            .nav-menu {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .mobile-drawer {
                display: block;
            }

            .category-hero {
                padding: 40px 0 32px;
            }

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

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

            .category-hero-stats {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .hero-stat-card {
                padding: 16px 12px;
            }

            .hero-stat-card .stat-number {
                font-size: 26px;
            }

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

            .snapshot-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .snapshot-card {
                padding: 18px 14px;
            }

            .snapshot-card .snap-number {
                font-size: 28px;
            }

            .highlight-card-body {
                padding: 24px;
            }

            .highlight-card-body h3 {
                font-size: 20px;
            }

            .cta-box {
                padding: 32px 20px;
            }

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

            .cta-actions {
                flex-direction: column;
                width: 100%;
            }

            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
            }

            .footer-links {
                margin-top: 4px;
            }

            .mobile-tab-bar {
                display: block;
            }

            body {
                padding-bottom: 56px;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 28px;
            }

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

            .snapshot-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

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

            .cta-box {
                padding: 24px 16px;
            }

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