/* roulang page: index */
:root {
            --primary: #00d4ff;
            --primary-rgb: 0, 212, 255;
            --secondary: #8b5cf6;
            --secondary-rgb: 139, 92, 246;
            --accent: #f59e0b;
            --bg-body: #0b0f1a;
            --bg-section: #0e1424;
            --bg-card: #141c30;
            --bg-card-hover: #192443;
            --text-main: #e8edf5;
            --text-muted: #8fa3bf;
            --border: rgba(0, 212, 255, 0.12);
            --radius: 16px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.18);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: 90px 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 212, 255, 0.08);
            border: 1px solid rgba(0, 212, 255, 0.2);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 100px;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }
        .section-title {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            color: #fff;
        }
        .section-sub {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 560px;
            margin-bottom: 40px;
            line-height: 1.8;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #00a0cc);
            color: #0b0f1a;
            box-shadow: 0 4px 24px rgba(0, 212, 255, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(0, 212, 255, 0.45);
        }
        .btn-ghost {
            background: rgba(0, 212, 255, 0.05);
            border-color: rgba(0, 212, 255, 0.3);
            color: var(--primary);
        }
        .btn-ghost:hover {
            background: rgba(0, 212, 255, 0.12);
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 16px;
            border-radius: 14px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 600;
        }
        .badge-neon {
            background: rgba(0, 212, 255, 0.12);
            color: var(--primary);
            border: 1px solid rgba(0, 212, 255, 0.25);
        }
        .badge-purple {
            background: rgba(139, 92, 246, 0.12);
            color: #a78bfa;
            border: 1px solid rgba(139, 92, 246, 0.3);
        }
        .badge-orange {
            background: rgba(245, 158, 11, 0.1);
            color: #fbbf24;
            border: 1px solid rgba(245, 158, 11, 0.3);
        }
        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 15, 26, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 212, 255, 0.1);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
        }
        .logo-text {
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
        }
        .logo-highlight {
            color: var(--primary);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-link {
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            position: relative;
            transition: var(--transition);
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(0, 212, 255, 0.06);
        }
        .nav-link.active {
            color: var(--primary);
            text-shadow: 0 0 12px rgba(0, 212, 255, 0.5);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            box-shadow: 0 0 12px rgba(0, 212, 255, 0.6);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-main);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .mobile-toggle:hover {
            background: rgba(0, 212, 255, 0.1);
            color: var(--primary);
        }
        /* Mobile Nav */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: rgba(11, 15, 26, 0.97);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 212, 255, 0.15);
            padding: 16px 24px;
            flex-direction: column;
            gap: 4px;
            z-index: 999;
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav .nav-link {
            padding: 14px 16px;
            border-radius: 12px;
            font-size: 16px;
        }
        .mobile-nav .nav-link.active {
            background: rgba(0, 212, 255, 0.08);
        }
        /* Hero */
        .hero {
            position: relative;
            min-height: 680px;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 140px 0 80px;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 15, 26, 0.94) 0%, rgba(11, 15, 26, 0.75) 50%, rgba(11, 15, 26, 0.55) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(transparent, var(--bg-body));
            z-index: 2;
        }
        .hero-content {
            position: relative;
            z-index: 3;
            max-width: 680px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            border-radius: 100px;
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.3);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 24px;
        }
        .hero-title {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.15;
            color: #fff;
            letter-spacing: -1px;
            margin-bottom: 20px;
        }
        .hero-title .gradient-text {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 17px;
            color: rgba(232, 237, 245, 0.8);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 540px;
        }
        .hero-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 32px;
        }
        .stat-item {
            text-align: left;
        }
        .stat-number {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            line-height: 1;
            margin-bottom: 6px;
        }
        .stat-number span {
            color: var(--primary);
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-muted);
        }
        /* About Section */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .about-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .about-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }
        .about-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(11, 15, 26, 0.7));
        }
        .about-badge {
            position: absolute;
            bottom: 24px;
            left: 24px;
            z-index: 2;
            background: rgba(11, 15, 26, 0.8);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(0, 212, 255, 0.2);
            border-radius: 16px;
            padding: 16px 24px;
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .about-badge-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
        }
        .about-badge-text {
            font-size: 14px;
            color: #fff;
        }
        .about-badge-text span {
            display: block;
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 2px;
        }
        .about-cards {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            margin-top: 28px;
        }
        .about-card {
            display: flex;
            gap: 16px;
            padding: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .about-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(0, 212, 255, 0.3);
            transform: translateX(4px);
        }
        .about-card-icon {
            width: 44px;
            height: 44px;
            flex-shrink: 0;
            border-radius: 12px;
            background: rgba(0, 212, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
        }
        .about-card-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 4px;
        }
        .about-card-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        /* Category Cards */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border);
            transition: var(--transition);
            min-height: 320px;
            display: flex;
            align-items: flex-end;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow);
            border-color: rgba(0, 212, 255, 0.35);
        }
        .category-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .category-card:hover img {
            transform: scale(1.05);
        }
        .category-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 20%, rgba(11, 15, 26, 0.92) 100%);
        }
        .category-card-content {
            position: relative;
            z-index: 2;
            padding: 28px;
            width: 100%;
        }
        .category-card-content .cat-label {
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--primary);
            text-transform: uppercase;
            margin-bottom: 8px;
            display: block;
        }
        .category-card-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .category-card-content p {
            font-size: 14px;
            color: rgba(232, 237, 245, 0.75);
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .category-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
        }
        .category-card-link i {
            transition: transform 0.3s;
        }
        .category-card:hover .category-card-link i {
            transform: translateX(4px);
        }
        /* News List */
        .news-section {
            background: var(--bg-section);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            transition: var(--transition);
        }
        .news-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(0, 212, 255, 0.3);
            transform: translateY(-4px);
            box-shadow: var(--shadow-sm);
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }
        .news-time {
            font-size: 13px;
            color: var(--text-muted);
        }
        .news-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .news-card h3 a:hover {
            color: var(--primary);
        }
        .news-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-card);
            border: 1px dashed var(--border);
            border-radius: var(--radius);
            color: var(--text-muted);
            font-size: 16px;
        }
        /* Features */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            padding: 32px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(0, 212, 255, 0.3);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(139, 92, 246, 0.12));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 20px;
            border: 1px solid rgba(0, 212, 255, 0.15);
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        /* Stats Section */
        .stats-section {
            background: linear-gradient(135deg, #0e1424 0%, #0a0f1a 100%);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 2;
        }
        .stats-item {
            text-align: center;
            padding: 32px 16px;
            background: rgba(20, 28, 48, 0.6);
            border: 1px solid rgba(0, 212, 255, 0.1);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(8px);
        }
        .stats-item .number {
            font-size: 40px;
            font-weight: 800;
            color: #fff;
            line-height: 1.1;
            margin-bottom: 8px;
        }
        .stats-item .number span {
            color: var(--primary);
        }
        .stats-item .label {
            font-size: 14px;
            color: var(--text-muted);
        }
        /* Process */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            position: relative;
        }
        .process-grid::before {
            content: '';
            position: absolute;
            top: 60px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0.2;
        }
        .process-step {
            text-align: center;
            padding: 32px 24px;
            position: relative;
            z-index: 2;
        }
        .process-number {
            width: 60px;
            height: 60px;
            margin: 0 auto 20px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            box-shadow: 0 0 24px rgba(0, 212, 255, 0.3);
            position: relative;
            z-index: 2;
        }
        .process-step h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 10px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 260px;
            margin: 0 auto;
        }
        /* FAQ */
        .faq-section {
            background: var(--bg-section);
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(0, 212, 255, 0.25);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 22px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 500;
            color: #fff;
            transition: var(--transition);
        }
        .faq-question i {
            color: var(--primary);
            font-size: 14px;
            transition: transform 0.3s;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        .faq-answer-inner {
            padding: 0 24px 22px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
        }
        /* CTA */
        .cta-section {
            position: relative;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            padding: 100px 0;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 15, 26, 0.85);
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 38px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .cta-content p {
            font-size: 16px;
            color: rgba(232, 237, 245, 0.8);
            margin-bottom: 32px;
            line-height: 1.8;
        }
        /* Footer */
        .site-footer {
            background: #080c14;
            border-top: 1px solid rgba(0, 212, 255, 0.1);
            padding: 60px 0 30px;
        }
        .footer-top {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: 40px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        .footer-brand {
            flex-shrink: 0;
        }
        .footer-brand .logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            max-width: 300px;
            line-height: 1.7;
        }
        .footer-nav {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-nav-title {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
        }
        .footer-nav a {
            font-size: 14px;
            color: var(--text-muted);
        }
        .footer-nav a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .hero-title {
                font-size: 42px;
            }
            .section-title {
                font-size: 30px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .desktop-cta {
                display: none;
            }
            .hero {
                min-height: auto;
                padding: 120px 0 60px;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .about-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .process-grid::before {
                display: none;
            }
            .section {
                padding: 60px 0;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-buttons .btn {
                width: 100%;
            }
            .hero-stats {
                gap: 24px;
            }
            .stat-number {
                font-size: 22px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 26px;
            }
            .footer-top {
                flex-direction: column;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category1 */
:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #101826;
  --bg-card: #121b2e;
  --bg-elevated: #182338;
  --neon-cyan: #00e5ff;
  --neon-purple: #a855f7;
  --neon-pink: #f472b6;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: rgba(0, 229, 255, 0.12);
  --border-hover: rgba(0, 229, 255, 0.35);
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
html { scroll-behavior: smooth; }
body { background: var(--bg-primary); color: var(--text-primary); font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; }

.container { width: min(1200px, 92%); margin: 0 auto; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 23, 0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(0, 229, 255, 0.1);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.2), rgba(168, 85, 247, 0.25));
  border: 1px solid rgba(0, 229, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--neon-cyan);
  font-size: 18px;
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.15);
}
.logo-text {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: #fff;
  line-height: 1.2;
}
.logo-highlight { color: var(--neon-cyan); }
.main-nav { display: flex; align-items: center; gap: 6px; }
.nav-link {
  position: relative;
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 10px;
  transition: var(--transition);
}
.nav-link:hover { color: #fff; background: rgba(0, 229, 255, 0.06); }
.nav-link.active {
  color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.1);
  box-shadow: inset 0 0 0 1px rgba(0, 229, 255, 0.2), 0 0 18px rgba(0, 229, 255, 0.1);
}
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.2), rgba(168, 85, 247, 0.3));
  border: 1px solid rgba(0, 229, 255, 0.3);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  flex-shrink: 0;
}
.header-cta:hover {
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.32), rgba(168, 85, 247, 0.45));
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.2);
  transform: translateY(-1px);
}
.mobile-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  color: var(--neon-cyan);
  font-size: 18px;
  align-items: center;
  justify-content: center;
  background: rgba(0, 229, 255, 0.06);
  transition: var(--transition);
}
.mobile-toggle:hover { background: rgba(0, 229, 255, 0.14); }
.mobile-menu {
  display: none;
  padding: 0 24px 20px;
  flex-direction: column;
  gap: 8px;
}
.mobile-menu.open { display: flex; }
.mobile-link {
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.02);
  transition: var(--transition);
}
.mobile-link:hover, .mobile-link.active { color: var(--neon-cyan); background: rgba(0, 229, 255, 0.08); }

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: 88px 0 76px;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(6, 10, 19, 0.92) 0%, rgba(10, 14, 23, 0.82) 50%, rgba(16, 24, 38, 0.9) 100%);
}
.page-hero .container { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 28px;
}
.breadcrumb a { color: var(--text-secondary); transition: var(--transition); }
.breadcrumb a:hover { color: var(--neon-cyan); }
.breadcrumb i { font-size: 10px; color: var(--text-muted); }
.breadcrumb span { color: var(--neon-cyan); }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 100px;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.25);
  color: var(--neon-cyan);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}
.page-hero h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.15;
  margin: 0 0 18px;
  letter-spacing: 1px;
  color: #fff;
}
.page-hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 640px;
  margin-bottom: 28px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 14px;
  color: var(--text-secondary);
}
.hero-meta i { color: var(--neon-cyan); }

/* ===== Topic Tabs ===== */
.topic-tabs {
  padding: 40px 0 0;
  position: relative;
  z-index: 3;
}
.tabs-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}
.tab-btn {
  padding: 9px 22px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid transparent;
  transition: var(--transition);
}
.tab-btn:hover { color: #fff; border-color: rgba(0, 229, 255, 0.2); }
.tab-btn.active {
  color: #0a0e17;
  background: linear-gradient(135deg, var(--neon-cyan), #3ce8ff);
  border-color: rgba(0, 229, 255, 0.4);
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.25);
}

/* ===== Section Common ===== */
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.section-tag {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--neon-cyan);
  display: block;
  margin-bottom: 8px;
}
.section-head h2 {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  margin: 0;
  line-height: 1.2;
}
.title-dot {
  color: var(--neon-cyan);
}
.section-desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 420px;
}

/* ===== News Cards ===== */
.news-section {
  padding: 60px 0 40px;
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.news-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 229, 255, 0.25);
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 229, 255, 0.08);
}
.card-img-wrap {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}
.card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.news-card:hover .card-img-wrap img {
  transform: scale(1.05);
}
.card-img-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(10, 14, 23, 0.6));
}
.card-cat {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: rgba(0, 229, 255, 0.85);
  border-radius: 100px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(6px);
}
.card-body {
  padding: 22px 22px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.card-body h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.6;
  margin: 0 0 12px;
}
.card-body h3 a {
  color: #e8edf5;
  transition: var(--transition);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-body h3 a:hover { color: var(--neon-cyan); }
.card-body p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0 0 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-meta {
  display: flex;
  gap: 16px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 13px;
  color: var(--text-muted);
}
.card-meta i { color: var(--neon-cyan); font-size: 12px; margin-right: 4px; }

/* ===== Hot Section ===== */
.hot-section {
  padding: 40px 0 60px;
}
.hot-layout {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 32px;
}
.hot-feature {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}
.hot-feature:hover { border-color: rgba(0, 229, 255, 0.2); transform: translateY(-4px); }
.hot-feature img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.hot-feature-body {
  padding: 24px 26px 28px;
}
.feature-tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 100px;
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.22), rgba(0, 229, 255, 0.18));
  border: 1px solid rgba(168, 85, 247, 0.3);
  color: #c4b5fd;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 14px;
}
.hot-feature-body h3 {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 12px;
  color: #fff;
}
.hot-feature-body p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 18px;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--neon-cyan);
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
}
.text-link:hover { gap: 12px; color: #fff; }
.hot-list {
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  padding: 10px 24px;
  box-shadow: var(--shadow-card);
}
.hot-item {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: var(--transition);
}
.hot-item:last-child { border-bottom: none; }
.hot-item:hover { padding-left: 8px; }
.hot-num {
  font-size: 32px;
  font-weight: 900;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 229, 255, 0.5);
  font-style: italic;
  min-width: 48px;
  text-align: center;
}
.hot-num.hot { -webkit-text-stroke: 1px var(--neon-pink); }
.hot-info { flex: 1; }
.hot-info h4 {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  margin: 0 0 6px;
}
.hot-info h4 a { color: #dbe4f0; transition: var(--transition); }
.hot-info h4 a:hover { color: var(--neon-cyan); }
.hot-meta {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== Stats ===== */
.stats-section {
  position: relative;
  padding: 72px 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}
.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(6, 10, 19, 0.85);
  backdrop-filter: blur(4px);
}
.stats-section .container { position: relative; z-index: 2; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.stat-item {
  text-align: center;
  padding: 36px 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(0, 229, 255, 0.12);
  border-radius: var(--radius-md);
  transition: var(--transition);
  backdrop-filter: blur(6px);
}
.stat-item:hover {
  border-color: rgba(0, 229, 255, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.1);
}
.stat-num {
  display: block;
  font-size: 46px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 10px;
  line-height: 1.2;
}
.stat-label {
  font-size: 15px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ===== Featured ===== */
.featured-section {
  padding: 64px 0;
}
.featured-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.featured-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: var(--transition);
  min-height: 300px;
}
.featured-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 229, 255, 0.25);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}
.featured-card img {
  width: 100%;
  height: 100%;
  min-height: 300px;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.featured-card:hover img { transform: scale(1.04); }
.featured-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 32px;
  background: linear-gradient(180deg, transparent 30%, rgba(6, 10, 19, 0.75) 70%, rgba(6, 10, 19, 0.95));
}
.featured-tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 100px;
  background: rgba(0, 229, 255, 0.18);
  border: 1px solid rgba(0, 229, 255, 0.3);
  color: var(--neon-cyan);
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 12px;
  align-self: flex-start;
  backdrop-filter: blur(4px);
}
.featured-overlay h3 {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  line-height: 1.5;
  margin-bottom: 10px;
}
.featured-overlay p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(226, 232, 240, 0.8);
  margin: 0;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 60px 0;
  background: var(--bg-secondary);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(0, 229, 255, 0.18); }
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: #e2e8f0;
  list-style: none;
  transition: var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary i {
  color: var(--neon-cyan);
  font-size: 14px;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item[open] summary i { transform: rotate(180deg); }
.faq-item[open] summary { color: var(--neon-cyan); }
.faq-item p {
  padding: 0 24px 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
}

/* ===== CTA ===== */
.cta-section {
  padding: 72px 0;
}
.cta-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 48px 56px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(168, 85, 247, 0.1)), var(--bg-card);
  border: 1px solid rgba(0, 229, 255, 0.18);
  box-shadow: var(--shadow-card);
  flex-wrap: wrap;
}
.cta-badge {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 100px;
  background: rgba(0, 229, 255, 0.12);
  border: 1px solid rgba(0, 229, 255, 0.25);
  color: var(--neon-cyan);
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 14px;
}
.cta-text h2 {
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 10px;
}
.cta-text p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
}
.cta-form {
  display: flex;
  gap: 12px;
  min-width: 420px;
  flex-wrap: wrap;
}
.cta-form input {
  flex: 1;
  min-width: 220px;
  padding: 14px 20px;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 15px;
  outline: none;
  transition: var(--transition);
}
.cta-form input::placeholder { color: var(--text-muted); }
.cta-form input:focus {
  border-color: rgba(0, 229, 255, 0.4);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.12);
}
.cta-form button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--neon-cyan), #16c9e0);
  color: #0a0e17;
  font-size: 15px;
  font-weight: 700;
  transition: var(--transition);
  white-space: nowrap;
}
.cta-form button:hover {
  box-shadow: 0 0 26px rgba(0, 229, 255, 0.35);
  transform: translateY(-2px);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(0, 229, 255, 0.1);
  padding: 56px 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 320px;
}
.footer-nav { display: flex; flex-direction: column; gap: 12px; }
.footer-nav-title {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
  letter-spacing: 1px;
}
.footer-nav a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: var(--transition);
}
.footer-nav a:hover { color: var(--neon-cyan); padding-left: 4px; }
.footer-bottom {
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .hot-layout { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .cta-card { padding: 36px 36px; }
  .cta-form { min-width: 100%; }
  .page-hero h1 { font-size: 42px; }
}
@media (max-width: 768px) {
  .main-nav, .header-cta { display: none; }
  .mobile-toggle { display: flex; }
  .mobile-menu { position: absolute; top: 100%; left: 0; right: 0; background: var(--bg-primary); border-bottom: 1px solid var(--border-color); box-shadow: 0 20px 40px rgba(0,0,0,0.5); }
  .page-hero { padding: 64px 0 56px; }
  .page-hero h1 { font-size: 34px; }
  .hero-desc { font-size: 15px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .featured-grid { grid-template-columns: 1fr; }
  .section-head h2 { font-size: 30px; }
  .cta-card { flex-direction: column; align-items: flex-start; gap: 28px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .news-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-num { font-size: 34px; }
  .hot-item { flex-direction: column; align-items: flex-start; gap: 8px; }
  .hot-num { font-size: 26px; min-width: auto; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .page-hero h1 { font-size: 28px; }
  .tabs-bar { gap: 8px; }
  .tab-btn { padding: 8px 16px; font-size: 13px; }
  .cta-form input { min-width: 100%; }
  .cta-form button { width: 100%; justify-content: center; }
}

/* roulang page: article */
:root {
            --bg-dark: #0b1023;
            --bg-deep: #070b18;
            --bg-body: #f4f6fb;
            --bg-card: #ffffff;
            --primary: #00e5ff;
            --primary-dark: #00b8d9;
            --accent: #7c3aed;
            --accent-2: #ff2d95;
            --text-main: #1a2333;
            --text-muted: #5b6478;
            --text-light: #e8edf7;
            --border: #dfe4ef;
            --radius: 18px;
            --radius-sm: 12px;
            --shadow: 0 10px 40px rgba(20, 24, 45, 0.08);
            --shadow-lg: 0 20px 60px rgba(20, 24, 45, 0.14);
            --glow: 0 0 30px rgba(0, 229, 255, 0.25);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

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

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

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 32px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: 999px;
            font-size: 0.95rem;
            font-weight: 700;
            border: none;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 229, 255, 0.22);
        }

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

        .btn:focus-visible {
            outline: 3px solid rgba(0, 229, 255, 0.4);
            outline-offset: 2px;
        }

        .btn-primary {
            background: linear-gradient(135deg, #00e5ff, #7c3aed);
            color: #fff;
            box-shadow: 0 6px 24px rgba(0, 229, 255, 0.18);
        }

        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(0, 229, 255, 0.4);
            color: #0a9dbd;
        }

        .btn-ghost:hover {
            background: rgba(0, 229, 255, 0.08);
            box-shadow: none;
        }

        .btn-light {
            background: #fff;
            color: #0b1023;
        }

        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: #fff;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }

        .btn-block {
            width: 100%;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 16px;
            border-radius: 999px;
            font-size: 0.82rem;
            font-weight: 700;
            background: rgba(0, 229, 255, 0.1);
            color: #0a9dbd;
            border: 1px solid rgba(0, 229, 255, 0.25);
        }

        .badge-news {
            background: rgba(124, 58, 237, 0.1);
            color: #7c3aed;
            border-color: rgba(124, 58, 237, 0.25);
        }

        .badge-guide {
            background: rgba(0, 229, 255, 0.1);
            color: #0a9dbd;
            border-color: rgba(0, 229, 255, 0.25);
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 1.5px;
            color: #00b8d9;
            text-transform: uppercase;
        }

        .section-tag::before {
            content: "";
            width: 18px;
            height: 2px;
            background: linear-gradient(90deg, #00e5ff, #7c3aed);
            border-radius: 2px;
        }

        .section-tag-dark {
            color: #00e5ff;
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 54px;
        }

        .section-head h2 {
            font-size: 2.25rem;
            font-weight: 800;
            margin: 14px 0 10px;
            color: #141c2c;
            line-height: 1.3;
        }

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

        /* ===== Header ===== */
        .main-header {
            background: rgba(9, 13, 28, 0.94);
            -webkit-backdrop-filter: blur(16px);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 229, 255, 0.14);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: 78px;
            padding-top: 10px;
            padding-bottom: 10px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #00e5ff, #7c3aed);
            border-radius: 12px;
            color: #fff;
            font-size: 1.2rem;
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.35);
        }

        .logo-text {
            color: #eaf1ff;
        }

        .logo-highlight {
            background: linear-gradient(90deg, #00e5ff, #7c3aed);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-link {
            padding: 10px 22px;
            border-radius: 999px;
            color: #aeb8cf;
            font-size: 0.93rem;
            font-weight: 600;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(0, 229, 255, 0.08);
            border-color: rgba(0, 229, 255, 0.25);
        }

        .nav-link:focus-visible {
            outline: 2px solid rgba(0, 229, 255, 0.5);
            outline-offset: 2px;
        }

        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.18), rgba(124, 58, 237, 0.18));
            border-color: rgba(0, 229, 255, 0.4);
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.15), inset 0 0 12px rgba(0, 229, 255, 0.06);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 999px;
            padding: 6px 6px 6px 18px;
            transition: all 0.3s ease;
        }

        .header-search:focus-within {
            border-color: rgba(0, 229, 255, 0.5);
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.12);
        }

        .header-search input {
            background: transparent;
            border: none;
            outline: none;
            color: #fff;
            font-size: 0.85rem;
            width: 150px;
        }

        .header-search input::placeholder {
            color: #6b7590;
        }

        .header-search button {
            background: linear-gradient(135deg, #00e5ff, #7c3aed);
            color: #fff;
            border: none;
            border-radius: 999px;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            transition: all 0.3s ease;
        }

        .header-search button:hover {
            transform: scale(1.05);
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.4);
        }

        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            color: #fff;
            border-radius: 12px;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }

        /* ===== Article Hero ===== */
        .article-hero {
            background: linear-gradient(120deg, rgba(11, 16, 35, 0.97) 0%, rgba(20, 30, 70, 0.88) 55%, rgba(124, 58, 237, 0.4) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 72px 0 64px;
            border-bottom: 1px solid rgba(0, 229, 255, 0.12);
            position: relative;
        }

        .article-hero-title {
            color: #fff;
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.35;
            max-width: 860px;
            letter-spacing: 0.5px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            color: #8a93ab;
            font-size: 0.85rem;
            margin-bottom: 18px;
        }

        .breadcrumb a {
            color: #00e5ff;
            font-weight: 600;
            transition: color 0.3s;
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb .sep {
            color: #44506b;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            margin-top: 18px;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #aeb8cf;
            font-size: 0.88rem;
        }

        .meta-item i {
            color: #00e5ff;
        }

        /* ===== Article Body ===== */
        .article-body {
            padding: 64px 0 72px;
            background: var(--bg-body);
        }

        .article-grid {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 360px;
            gap: 40px;
            align-items: start;
        }

        .article-content {
            background: #fff;
            border-radius: 20px;
            padding: 48px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }

        .article-content-body {
            line-height: 1.9;
            color: #354056;
            font-size: 1.05rem;
        }

        .article-content-body p {
            margin: 1.2em 0;
        }

        .article-content-body h2 {
            font-size: 1.45rem;
            font-weight: 800;
            color: #141c2c;
            margin: 1.8em 0 0.6em;
        }

        .article-content-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #1e293b;
            margin: 1.6em 0 0.5em;
        }

        .article-content-body ul,
        .article-content-body ol {
            margin: 1em 0;
            padding-left: 1.4em;
        }

        .article-content-body li {
            margin: 0.45em 0;
        }

        .article-content-body img {
            border-radius: 14px;
            max-width: 100%;
            height: auto;
            margin: 1.4em 0;
            box-shadow: var(--shadow);
        }

        .article-content-body blockquote {
            border-left: 4px solid #00e5ff;
            background: rgba(0, 229, 255, 0.06);
            padding: 16px 22px;
            border-radius: 0 12px 12px 0;
            margin: 1.6em 0;
            color: #48536a;
        }

        .article-content-body a {
            color: #0a9dbd;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-content-body a:hover {
            color: #7c3aed;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 42px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            background: rgba(0, 229, 255, 0.06);
            border: 1px solid rgba(0, 229, 255, 0.18);
            border-radius: 999px;
            font-size: 0.82rem;
            color: #0a9dbd;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .tag:hover {
            background: rgba(0, 229, 255, 0.12);
            border-color: rgba(0, 229, 255, 0.35);
        }

        .article-empty {
            text-align: center;
            padding: 60px 20px;
        }

        .article-empty-icon {
            font-size: 3rem;
            color: #b2bdda;
            margin-bottom: 20px;
        }

        .article-empty h2 {
            font-size: 1.7rem;
            font-weight: 800;
            margin-bottom: 12px;
            color: #141c2c;
        }

        .article-empty p {
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        .article-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 32px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
        }

        /* ===== Sidebar ===== */
        .side-panel {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 100px;
        }

        .side-card {
            background: #fff;
            border-radius: 18px;
            padding: 26px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }

        .side-card-glow {
            background: linear-gradient(135deg, #0f1830, #1a2547);
            border-color: rgba(0, 229, 255, 0.2);
        }

        .side-card-title {
            font-size: 1.05rem;
            font-weight: 800;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: #141c2c;
        }

        .side-card-title i {
            color: #00b8d9;
        }

        .side-card-glow .side-card-title {
            color: #fff;
        }

        .side-card-glow .side-card-title i {
            color: #00e5ff;
        }

        .side-category {
            display: flex;
            gap: 14px;
            padding: 14px;
            border-radius: 14px;
            border: 1px solid var(--border);
            margin-bottom: 12px;
            transition: all 0.3s ease;
            background: #fafbfe;
        }

        .side-category:last-child {
            margin-bottom: 0;
        }

        .side-category:hover {
            border-color: rgba(0, 229, 255, 0.4);
            box-shadow: 0 8px 24px rgba(0, 229, 255, 0.1);
            transform: translateY(-2px);
        }

        .side-category-img {
            width: 64px;
            height: 64px;
            border-radius: 12px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .side-category div {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .side-category strong {
            font-size: 0.93rem;
            color: #1a2333;
        }

        .side-category span {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .side-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .side-list li {
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        .side-list li:last-child {
            border-bottom: none;
        }

        .side-list a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 6px;
            font-size: 0.88rem;
            font-weight: 600;
            color: #354056;
            border-radius: 10px;
            transition: all 0.3s ease;
        }

        .side-list a:hover {
            color: #0a9dbd;
            transform: translateX(4px);
        }

        .side-list a span {
            color: #b2bdda;
            font-weight: 800;
            font-size: 0.8rem;
            min-width: 28px;
        }

        .side-card-glow .side-text {
            color: #aeb8cf;
            font-size: 0.88rem;
            line-height: 1.7;
            margin-bottom: 20px;
        }

        /* ===== Related ===== */
        .related-section {
            padding: 76px 0;
            background: #eef1f7;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .content-card {
            background: #fff;
            border-radius: 18px;
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all 0.35s ease;
        }

        .content-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(0, 229, 255, 0.35);
        }

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

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

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

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

        .content-card-body h3 {
            font-size: 1.08rem;
            font-weight: 800;
            margin: 14px 0 10px;
            line-height: 1.5;
        }

        .content-card-body h3 a {
            color: #141c2c;
            transition: color 0.3s;
        }

        .content-card-body h3 a:hover {
            color: #0a9dbd;
        }

        .content-card-body p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.65;
            margin-bottom: 18px;
        }

        .card-link {
            font-size: 0.85rem;
            font-weight: 700;
            color: #00b8d9;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all 0.3s;
        }

        .card-link:hover {
            gap: 12px;
            color: #7c3aed;
        }

        /* ===== Service ===== */
        .service-section {
            padding: 76px 0;
            background: var(--bg-dark);
            background-image: linear-gradient(120deg, rgba(11, 16, 35, 0.97), rgba(20, 30, 70, 0.92)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
        }

        .service-banner {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            align-items: center;
            gap: 56px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(0, 229, 255, 0.16);
            border-radius: 24px;
            padding: 52px;
            backdrop-filter: blur(8px);
        }

        .service-info h2 {
            color: #fff;
            font-size: 1.9rem;
            font-weight: 800;
            line-height: 1.35;
            margin: 14px 0 14px;
        }

        .service-info p {
            color: #aeb8cf;
            font-size: 1rem;
            margin-bottom: 30px;
        }

        .stats-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }

        .stat-item {
            background: rgba(0, 229, 255, 0.06);
            border: 1px solid rgba(0, 229, 255, 0.18);
            border-radius: 16px;
            padding: 22px 14px;
            text-align: center;
            transition: all 0.3s ease;
        }

        .stat-item:hover {
            background: rgba(0, 229, 255, 0.1);
            transform: translateY(-3px);
        }

        .stat-item strong {
            display: block;
            font-size: 1.6rem;
            font-weight: 800;
            color: #00e5ff;
            margin-bottom: 4px;
        }

        .stat-item span {
            color: #8a93ab;
            font-size: 0.82rem;
        }

        .service-visual {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .service-img {
            border-radius: 20px;
            box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4);
            border: 1px solid rgba(0, 229, 255, 0.2);
            max-height: 360px;
            object-fit: cover;
            width: 100%;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 76px 0;
            background: var(--bg-body);
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 24px 28px;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: var(--shadow);
        }

        .faq-item summary {
            font-size: 1.02rem;
            font-weight: 700;
            color: #1a2333;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

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

        .faq-item summary::after {
            content: "+";
            font-size: 1.5rem;
            font-weight: 400;
            color: #00b8d9;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }

        .faq-item p {
            color: var(--text-muted);
            font-size: 0.92rem;
            padding-top: 16px;
            border-top: 1px solid rgba(0, 0, 0, 0.05);
            margin-top: 16px;
            line-height: 1.75;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 20px 0 76px;
            background: var(--bg-body);
        }

        .cta-box {
            background: linear-gradient(120deg, #0f1830, #1a2547);
            border: 1px solid rgba(0, 229, 255, 0.2);
            border-radius: 24px;
            padding: 48px 52px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            box-shadow: 0 20px 60px rgba(11, 16, 35, 0.25);
            background-image: radial-gradient(circle at 80% 20%, rgba(0, 229, 255, 0.12), transparent 50%);
        }

        .cta-content h2 {
            color: #fff;
            font-size: 1.7rem;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .cta-content p {
            color: #aeb8cf;
            font-size: 0.95rem;
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(0, 229, 255, 0.12);
            padding: 64px 0 28px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-brand .logo {
            font-size: 1.25rem;
            margin-bottom: 16px;
        }

        .footer-brand p {
            color: #7d88a5;
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
            margin-top: 12px;
        }

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

        .footer-nav-title {
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-nav-title::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: linear-gradient(90deg, #00e5ff, #7c3aed);
            border-radius: 2px;
        }

        .footer-nav a {
            color: #7d88a5;
            font-size: 0.88rem;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-nav a:hover {
            color: #00e5ff;
            transform: translateX(4px);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            padding-top: 28px;
            color: #5b6478;
            font-size: 0.85rem;
        }

        .footer-bottom p {
            margin: 0;
        }

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

            .side-panel {
                position: static;
                display: grid;
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }

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

            .service-banner {
                grid-template-columns: 1fr;
                padding: 36px;
            }

            .service-visual {
                order: -1;
            }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }

            .header-inner {
                flex-wrap: wrap;
                gap: 12px;
            }

            .header-search {
                display: none;
            }

            .main-nav {
                order: 3;
                width: 100%;
                justify-content: center;
                gap: 4px;
                padding: 6px 0;
            }

            .nav-link {
                padding: 8px 16px;
                font-size: 0.85rem;
            }

            .article-hero {
                padding: 52px 0 44px;
            }

            .article-hero-title {
                font-size: 1.5rem;
            }

            .article-content {
                padding: 28px 22px;
            }

            .article-body {
                padding: 48px 0 56px;
            }

            .side-panel {
                grid-template-columns: 1fr;
            }

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

            .service-banner {
                padding: 28px 22px;
            }

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

            .cta-box {
                padding: 34px 26px;
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-actions {
                width: 100%;
            }

            .cta-actions .btn {
                flex: 1;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

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

            .header-inner {
                flex-direction: row;
                flex-wrap: nowrap;
                padding-top: 8px;
                padding-bottom: 8px;
            }

            .logo-icon {
                width: 38px;
                height: 38px;
                font-size: 1rem;
            }

            .logo-text {
                font-size: 1.1rem;
            }

            .main-nav {
                position: fixed;
                top: 66px;
                left: 0;
                right: 0;
                background: rgba(9, 13, 28, 0.98);
                flex-direction: column;
                align-items: center;
                padding: 16px 20px;
                border-bottom: 1px solid rgba(0, 229, 255, 0.15);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.35s ease;
                z-index: 99;
                border-radius: 0 0 20px 20px;
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-link {
                width: 100%;
                text-align: center;
                padding: 13px 16px;
            }

            .article-hero-title {
                font-size: 1.3rem;
            }

            .article-meta {
                gap: 10px;
            }

            .article-content-body {
                font-size: 0.96rem;
            }

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

            .section-head h2 {
                font-size: 1.6rem;
            }

            .service-info h2 {
                font-size: 1.35rem;
            }
        }

/* roulang page: category2 */
:root {
    --primary: #00f0ff;
    --primary-dark: #0bc5d3;
    --secondary: #8b5cf6;
    --accent: #f43f5e;
    --bg: #0a0e17;
    --bg-deep: #060a12;
    --bg-card: #111a28;
    --bg-hover: #1a2332;
    --text-main: #e2e8f0;
    --text-sub: #94a3b8;
    --text-dim: #64748b;
    --border: rgba(148,163,184,0.12);
    --border-light: rgba(148,163,184,0.22);
    --radius: 14px;
    --radius-lg: 22px;
    --shadow: 0 12px 32px rgba(0,0,0,0.4);
    --shadow-neon: 0 0 20px rgba(0,240,255,0.15);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Inter', sans-serif;
    background: var(--bg);
    color: var(--text-main);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; }

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

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(6, 10, 18, 0.92);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: #fff;
    transition: opacity .3s;
}
.logo:hover { opacity: .85; }
.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0,240,255,0.25), rgba(139,92,246,0.25));
    border: 1px solid rgba(0,240,255,0.35);
    color: var(--primary);
    font-size: 1.1rem;
    box-shadow: var(--shadow-neon);
}
.logo-text { font-weight: 800; }
.logo-highlight { color: var(--primary); }

.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 4px;
}
.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-sub);
    transition: all .3s ease;
    white-space: nowrap;
}
.nav-link:hover {
    color: #fff;
    background: rgba(0,240,255,0.08);
}
.nav-link.active {
    color: #000;
    background: var(--primary);
    font-weight: 600;
    box-shadow: 0 0 22px rgba(0,240,255,0.35);
}
.header-actions { display: flex; align-items: center; gap: 12px; }
.mobile-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border-light);
    color: var(--text-main);
    font-size: 1rem;
    transition: all .3s;
}
.mobile-toggle:hover { background: rgba(255,255,255,0.12); }

/* Page Hero */
.page-hero {
    position: relative;
    padding: 140px 0 120px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    overflow: hidden;
}
.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(6,10,18,0.93), rgba(10,14,23,0.78));
}
.page-hero::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 120px;
    background: linear-gradient(to top, var(--bg), transparent);
    pointer-events: none;
}
.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}
.breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-sub);
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
    padding: 6px 14px;
    border-radius: 999px;
    margin-bottom: 24px;
    backdrop-filter: blur(8px);
}
.breadcrumb a { color: var(--primary); transition: color .3s; }
.breadcrumb a:hover { color: #fff; }
.hero-content h1 {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.01em;
    margin-bottom: 20px;
    background: linear-gradient(120deg, #fff, var(--primary) 60%, #7dd3e8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-content p {
    font-size: 1.1rem;
    color: var(--text-sub);
    max-width: 600px;
    margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 28px;
    border-radius: 999px;
    background: var(--primary);
    color: #000;
    font-weight: 600;
    font-size: 0.95rem;
    box-shadow: 0 0 30px rgba(0,240,255,0.28);
    transition: all .3s ease;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 40px rgba(0,240,255,0.4);
    background: #33f3ff;
}
.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 28px;
    border-radius: 999px;
    border: 1px solid var(--border-light);
    color: var(--text-main);
    background: rgba(255,255,255,0.04);
    font-weight: 500;
    font-size: 0.95rem;
    transition: all .3s;
}
.btn-ghost:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0,240,255,0.06);
    transform: translateY(-2px);
}

/* Section */
.section { padding: 90px 0; }
.section-alt { background: rgba(255,255,255,0.02); border-block: 1px solid var(--border); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section-tag {
    display: inline-block;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--primary);
    text-transform: uppercase;
    background: rgba(0,240,255,0.08);
    border: 1px solid rgba(0,240,255,0.22);
    padding: 5px 16px;
    border-radius: 999px;
    margin-bottom: 16px;
}
.section-head h2 {
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 14px;
    color: #fff;
}
.section-head p { color: var(--text-sub); font-size: 1.05rem; }

/* Guide Cards */
.guide-card {
    position: relative;
    border-radius: var(--radius-lg);
    background: linear-gradient(160deg, rgba(17,26,40,0.92), rgba(10,14,23,0.96));
    border: 1px solid var(--border);
    overflow: hidden;
    padding: 0;
    transition: all .4s cubic-bezier(.2,.8,.2,1);
    display: flex;
    flex-direction: column;
}
.guide-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0,240,255,0.35);
    box-shadow: 0 16px 48px rgba(0,0,0,0.5), 0 0 25px rgba(0,240,255,0.08);
}
.guide-card-image {
    position: relative;
    height: 190px;
    overflow: hidden;
}
.guide-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}
.guide-card:hover .guide-card-image img { transform: scale(1.06); }
.guide-card-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, #0e1420, transparent 65%);
}
.guide-card-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    background: rgba(6,10,18,0.8);
    backdrop-filter: blur(8px);
    color: var(--primary);
    border: 1px solid rgba(0,240,255,0.35);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 999px;
}
.guide-card-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.guide-card-body h3 { font-size: 1.15rem; font-weight: 700; color: #fff; margin-bottom: 10px; }
.guide-card-body p { font-size: 0.92rem; color: var(--text-sub); flex: 1; margin-bottom: 18px; }
.guide-card-link {
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 600;
    transition: all .3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.guide-card-link i { transition: transform .3s; }
.guide-card-link:hover { color: #fff; }
.guide-card-link:hover i { transform: translateX(4px); }

/* Steps */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
    position: relative;
}
.steps-grid::before {
    content: '';
    position: absolute;
    top: 32px; left: 9%; right: 9%;
    height: 2px;
    background: linear-gradient(90deg, rgba(0,240,255,0.5), rgba(139,92,246,0.4), rgba(0,240,255,0.5));
    opacity: 0.4;
    border-radius: 999px;
}
.step-item {
    text-align: center;
    position: relative;
    transition: transform .3s;
}
.step-item:hover { transform: translateY(-4px); }
.step-num {
    width: 64px;
    height: 64px;
    margin: 0 auto 18px;
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(0,240,255,0.18), rgba(139,92,246,0.18));
    border: 1px solid rgba(0,240,255,0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary);
    box-shadow: var(--shadow-neon);
    position: relative;
    z-index: 2;
}
.step-item h3 { font-size: 1.08rem; font-weight: 700; color: #fff; margin-bottom: 8px; }
.step-item p { font-size: 0.86rem; color: var(--text-sub); padding: 0 6px; }

/* Feature */
.feature-grid {
    display: flex;
    flex-direction: column;
    gap: 80px;
}
.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}
.feature-media {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow);
}
.feature-media img { width: 100%; height: 100%; object-fit: cover; min-height: 320px; }
.feature-media::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,240,255,0.06), transparent 50%);
    pointer-events: none;
}
.feature-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: rgba(6,10,18,0.85);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(0,240,255,0.3);
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 999px;
    z-index: 2;
}
.feature-content h3 {
    font-size: 1.7rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 18px;
    line-height: 1.4;
}
.feature-content p { color: var(--text-sub); font-size: 1rem; margin-bottom: 22px; }
.feature-list { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.feature-list li { display: flex; align-items: flex-start; gap: 12px; color: var(--text-main); font-size: 0.95rem; }
.feature-list li i {
    width: 24px; height: 24px;
    border-radius: 8px;
    background: rgba(0,240,255,0.12);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    flex-shrink: 0;
    margin-top: 2px;
}

/* Stats */
.stats-section {
    position: relative;
    background: linear-gradient(135deg, rgba(0,240,255,0.04), rgba(139,92,246,0.04)), var(--bg-deep);
    border-block: 1px solid var(--border);
    overflow: hidden;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}
.stat-item {
    text-align: center;
    padding: 32px 20px;
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    transition: all .3s;
}
.stat-item:hover { border-color: rgba(0,240,255,0.3); box-shadow: var(--shadow-neon); transform: translateY(-3px); }
.stat-number {
    font-size: 2.6rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), #7dd3e8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 6px;
}
.stat-label { font-size: 0.95rem; color: var(--text-sub); }

/* FAQ */
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item {
    border-radius: var(--radius);
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    margin-bottom: 14px;
    overflow: hidden;
    transition: border-color .3s;
}
.faq-item.open { border-color: rgba(0,240,255,0.35); }
.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 22px 26px;
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    text-align: left;
    background: none;
    transition: all .3s;
    gap: 16px;
}
.faq-question:hover { color: var(--primary); }
.faq-question .faq-icon {
    width: 30px; height: 30px;
    border-radius: 10px;
    background: rgba(0,240,255,0.1);
    border: 1px solid rgba(0,240,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 0.85rem;
    flex-shrink: 0;
    transition: transform .35s ease;
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--primary); color: #000; }
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .4s ease;
}
.faq-answer-inner { padding: 0 26px 24px; color: var(--text-sub); font-size: 0.96rem; line-height: 1.8; }

/* CTA */
.cta-section { padding: 70px 0 90px; }
.cta-card {
    border-radius: 24px;
    padding: 56px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(0,240,255,0.1), rgba(139,92,246,0.12)), rgba(17,26,40,0.9);
    border: 1px solid rgba(0,240,255,0.2);
}
.cta-card::before {
    content: '';
    position: absolute;
    top: -60px; right: -60px;
    width: 200px; height: 200px;
    border-radius: 50%;
    background: rgba(0,240,255,0.12);
    filter: blur(80px);
}
.cta-card h2 { font-size: 2rem; font-weight: 800; color: #fff; margin-bottom: 14px; }
.cta-card p { color: var(--text-sub); font-size: 1.05rem; max-width: 600px; margin: 0 auto 30px; }

/* Footer */
.site-footer {
    background: var(--bg-deep);
    border-top: 1px solid var(--border);
    padding: 70px 0 0;
}
.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 44px;
}
.footer-brand p { color: var(--text-sub); font-size: 0.92rem; margin-top: 16px; line-height: 1.8; max-width: 340px; }
.footer-nav { display: flex; flex-direction: column; gap: 12px; }
.footer-nav-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 4px;
    letter-spacing: 0.02em;
}
.footer-nav a { color: var(--text-sub); font-size: 0.9rem; transition: all .3s; }
.footer-nav a:hover { color: var(--primary); padding-left: 4px; }
.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    color: var(--text-dim);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .steps-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .steps-grid::before { display: none; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .header-inner { height: 64px; }
    .main-nav {
        display: none;
        position: absolute;
        top: 64px;
        left: 16px;
        right: 16px;
        flex-direction: column;
        background: rgba(6,10,18,0.98);
        border-radius: 16px;
        padding: 16px;
        gap: 8px;
        border: 1px solid var(--border-light);
        box-shadow: 0 20px 60px rgba(0,0,0,0.5);
    }
    .main-nav.open { display: flex; animation: fadeIn .25s ease; }
    .nav-link { width: 100%; justify-content: center; padding: 12px; }
    .mobile-toggle { display: flex; align-items: center; justify-content: center; }
    .hero-content h1 { font-size: 2.4rem; }
    .section { padding: 70px 0; }
    .feature-row { grid-template-columns: 1fr; gap: 32px; }
    .feature-row.reverse .feature-media { order: -1; }
    .steps-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-top { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 520px) {
    .container { padding: 0 18px; }
    .hero-content h1 { font-size: 1.8rem; }
    .hero-actions { flex-direction: column; width: 100%; }
    .btn-primary, .btn-ghost { width: 100%; justify-content: center; }
    .steps-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; }
    .cta-card { padding: 40px 24px; }
    .cta-card h2 { font-size: 1.5rem; }
    .logo-text { font-size: 1.15rem; }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}