/* roulang page: index */
:root {
            --dark: #070d1a;
            --dark2: #0d1526;
            --dark3: #131d33;
            --neon: #22d3ee;
            --neon2: #a78bfa;
            --accent: #f472b6;
            --bg: #f1f5f9;
            --surface: #ffffff;
            --text: #0f172a;
            --muted: #64748b;
            --border: #e2e8f0;
            --radius: 18px;
            --radius-sm: 10px;
            --shadow: 0 10px 40px rgba(2, 6, 23, 0.08);
            --shadow-lg: 0 24px 60px rgba(2, 6, 23, 0.15);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 90px 0;
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 60px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--neon);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.25);
            padding: 6px 18px;
            border-radius: 50px;
            margin-bottom: 18px;
        }

        .section-head h2 {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--muted);
            line-height: 1.8;
        }

        /* ---------- Header / Nav ---------- */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(7, 13, 26, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(34, 211, 238, 0.12);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
            position: relative;
            z-index: 2;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--neon), var(--neon2));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #070d1a;
            font-weight: 900;
            box-shadow: 0 0 18px rgba(34, 211, 238, 0.4);
            flex-shrink: 0;
        }

        .logo-text {
            background: linear-gradient(90deg, #ffffff, #c7d2fe);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

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

        .nav-link {
            position: relative;
            display: inline-block;
            padding: 10px 20px;
            font-size: 15px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.75);
            border-radius: 50px;
            transition: var(--transition);
        }

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

        .nav-link.active {
            color: #fff;
            background: rgba(34, 211, 238, 0.15);
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.25), inset 0 0 0 1px rgba(34, 211, 238, 0.3);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            border-radius: 4px;
            background: var(--neon);
            box-shadow: 0 0 10px var(--neon);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            font-size: 14px;
            font-weight: 700;
            color: #070d1a;
            background: linear-gradient(135deg, var(--neon), #67e8f9);
            border-radius: 50px;
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.3);
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(34, 211, 238, 0.5);
            color: #070d1a;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            cursor: pointer;
            z-index: 2;
        }

        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: var(--transition);
        }

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

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

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

        /* ---------- Hero ---------- */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 140px 0 100px;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(7, 13, 26, 0.92), rgba(13, 21, 38, 0.82), rgba(7, 13, 26, 0.6));
        }

        .hero::after {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 380px;
            height: 380px;
            border-radius: 50%;
            background: rgba(34, 211, 238, 0.15);
            filter: blur(80px);
            animation: float 8s ease-in-out infinite alternate;
        }

        @keyframes float {
            0% {
                transform: translateY(0);
            }
            100% {
                transform: translateY(30px);
            }
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(34, 211, 238, 0.15);
            border: 1px solid rgba(34, 211, 238, 0.35);
            color: var(--neon);
            font-size: 13px;
            font-weight: 600;
            padding: 8px 20px;
            border-radius: 50px;
            letter-spacing: 1px;
            margin-bottom: 28px;
        }

        .hero-badge::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--neon);
            box-shadow: 0 0 12px var(--neon);
            animation: pulse 1.5s ease-in-out infinite;
        }

        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.6;
                transform: scale(0.8);
            }
        }

        .hero h1 {
            font-size: 52px;
            font-weight: 900;
            line-height: 1.2;
            color: #fff;
            letter-spacing: -1px;
            margin-bottom: 24px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
        }

        .hero h1 .highlight {
            background: linear-gradient(120deg, var(--neon), var(--neon2));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.8;
            margin-bottom: 36px;
            max-width: 560px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 50px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            font-size: 15px;
            font-weight: 700;
            color: #070d1a;
            background: linear-gradient(135deg, var(--neon), #67e8f9);
            border-radius: 50px;
            box-shadow: 0 0 24px rgba(34, 211, 238, 0.35);
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 36px rgba(34, 211, 238, 0.55);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 50px;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(34, 211, 238, 0.5);
            transform: translateY(-2px);
        }

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

        .hero-stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-stat-item .num {
            font-size: 26px;
            font-weight: 800;
            color: #fff;
        }

        .hero-stat-item .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }

        .hero-stat-item .num span {
            color: var(--neon);
        }

        /* ---------- Features ---------- */
        .features {
            background: var(--bg);
        }

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

        .feature-card {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 36px 30px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--neon), var(--neon2));
            opacity: 0;
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(34, 211, 238, 0.3);
        }

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

        .feature-icon {
            width: 58px;
            height: 58px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            margin-bottom: 22px;
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.12), rgba(167, 139, 250, 0.12));
            border: 1px solid rgba(34, 211, 238, 0.2);
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
        }

        .feature-card p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
        }

        /* ---------- Categories ---------- */
        .categories {
            background: linear-gradient(180deg, #f8fafc, #eef2f7);
        }

        .cat-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }

        .cat-card {
            position: relative;
            border-radius: 22px;
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .cat-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .cat-card .cat-img-wrap {
            position: relative;
            height: 220px;
            overflow: hidden;
        }

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

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

        .cat-card .cat-img-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(0, 0, 0, 0.4));
        }

        .cat-body {
            padding: 28px 30px 32px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .cat-body h3 {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--text);
        }

        .cat-body p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
            margin-bottom: 20px;
            flex: 1;
        }

        .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 700;
            color: var(--neon);
            transition: var(--transition);
        }

        .cat-link:hover {
            gap: 14px;
            color: var(--neon2);
        }

        /* ---------- Process ---------- */
        .process {
            background: var(--dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .process::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(7, 13, 26, 0.92);
        }

        .process .section-head {
            position: relative;
            z-index: 2;
        }

        .process .section-head h2 {
            color: #fff;
        }

        .process .section-head p {
            color: rgba(255, 255, 255, 0.65);
        }

        .process .section-tag {
            border-color: rgba(34, 211, 238, 0.4);
        }

        .flow-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .flow-step {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius);
            padding: 36px 30px;
            backdrop-filter: blur(10px);
            transition: var(--transition);
            position: relative;
        }

        .flow-step:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(34, 211, 238, 0.4);
            transform: translateY(-4px);
        }

        .flow-num {
            display: inline-flex;
            width: 46px;
            height: 46px;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--neon), var(--neon2));
            color: #070d1a;
            margin-bottom: 20px;
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.3);
        }

        .flow-step h3 {
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .flow-step p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
        }

        /* ---------- Showcase ---------- */
        .showcase {
            background: var(--bg);
        }

        .showcase-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
            align-items: center;
        }

        .showcase-img {
            position: relative;
            border-radius: 22px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 4px solid #fff;
        }

        .showcase-img img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

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

        .showcase-content h2 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 18px;
        }

        .showcase-content p {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .showcase-list {
            margin-top: 16px;
        }

        .showcase-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            font-size: 15px;
            color: var(--text);
            line-height: 1.6;
        }

        .showcase-list li::before {
            content: '✓';
            display: flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: rgba(34, 211, 238, 0.15);
            color: var(--neon);
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 1px;
        }

        /* ---------- News ---------- */
        .news-section {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .news-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            cursor: pointer;
            position: relative;
        }

        .news-card:hover {
            border-color: rgba(34, 211, 238, 0.35);
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }

        .news-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 18px;
        }

        .news-cat {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--neon);
            background: rgba(34, 211, 238, 0.08);
            border: 1px solid rgba(34, 211, 238, 0.2);
            padding: 4px 14px;
            border-radius: 50px;
        }

        .news-date {
            font-size: 13px;
            color: #94a3b8;
        }

        .news-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 12px;
            transition: var(--transition);
        }

        .news-card:hover h3 {
            color: var(--neon);
        }

        .news-card p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .news-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 20px;
            font-size: 14px;
            font-weight: 600;
            color: var(--neon);
            transition: var(--transition);
        }

        .news-more:hover {
            gap: 10px;
        }

        .empty-tip {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 0;
            color: var(--muted);
            font-size: 16px;
            background: #f8fafc;
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }

        /* ---------- FAQ ---------- */
        .faq {
            background: #f8fafc;
        }

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

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(34, 211, 238, 0.3);
            box-shadow: var(--shadow);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 22px 28px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            list-style: none;
            transition: var(--transition);
        }

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

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

        .faq-item summary .faq-ico {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: rgba(34, 211, 238, 0.1);
            color: var(--neon);
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .faq-item[open] summary .faq-ico {
            transform: rotate(45deg);
            background: var(--neon);
            color: #070d1a;
        }

        .faq-item .faq-answer {
            padding: 0 28px 24px 72px;
            font-size: 15px;
            color: var(--muted);
            line-height: 1.8;
        }

        /* ---------- CTA ---------- */
        .cta-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            padding: 100px 0;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(7, 13, 26, 0.92), rgba(13, 21, 38, 0.85));
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 560px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            margin-bottom: 36px;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 50px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            font-size: 18px;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 1px;
        }

        .footer-col a {
            display: block;
            padding: 6px 0;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: var(--neon);
            transform: translateX(4px);
        }

        .footer-bottom {
            padding-top: 26px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ---------- Responsive ---------- */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }

            .section {
                padding: 70px 0;
            }

            .hero h1 {
                font-size: 40px;
            }

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

            .flow-grid {
                gap: 20px;
            }

            .footer-inner {
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                background: rgba(7, 13, 26, 0.97);
            }

            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(7, 13, 26, 0.98);
                flex-direction: column;
                padding: 20px;
                gap: 10px;
                border-bottom: 1px solid rgba(34, 211, 238, 0.15);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
                backdrop-filter: blur(20px);
            }

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

            .nav-link {
                width: 100%;
                text-align: center;
                padding: 14px;
            }

            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .hero {
                padding: 120px 0 70px;
            }

            .hero h1 {
                font-size: 34px;
            }

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

            .section-head h2 {
                font-size: 30px;
            }

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

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

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

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

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

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

        @media (max-width: 520px) {
            .section {
                padding: 60px 0;
            }

            .hero h1 {
                font-size: 28px;
            }

            .logo {
                font-size: 17px;
            }

            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

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

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

            .hero-stats {
                gap: 16px;
            }

            .hero-stat-item .num {
                font-size: 20px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #00f0ff;
            --primary-deep: #0891b2;
            --accent: #8b5cf6;
            --bg-deep: #0a0f1e;
            --bg-card: #101827;
            --bg-card-hover: #162033;
            --text-main: #e2e8f0;
            --text-weak: #8892b0;
            --border: rgba(0, 240, 255, 0.12);
            --radius: 20px;
            --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
            --max-w: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-deep);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input, textarea {
            font-family: inherit;
        }

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

        /* ===== Header / 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(8, 13, 25, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }

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

        .logo-icon {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: linear-gradient(135deg, #00f0ff, #0891b2);
            color: #0a0f1e;
            font-size: 22px;
            font-weight: 800;
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.4);
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: #f1f5f9;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-link {
            position: relative;
            color: #cbd5e1;
            font-size: 15px;
            font-weight: 500;
            padding: 6px 2px;
            transition: color 0.3s ease;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 100%;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, #00f0ff, #8b5cf6);
            opacity: 0;
            transition: opacity 0.3s ease, box-shadow 0.3s ease;
        }

        .nav-link:hover {
            color: #ffffff;
        }

        .nav-link.active {
            color: #00f0ff;
            text-shadow: 0 0 12px rgba(0, 240, 255, 0.6);
        }

        .nav-link.active::after {
            opacity: 1;
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.8);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 22px;
            border-radius: 999px;
            background: linear-gradient(135deg, #00f0ff, #06b6d4);
            color: #0a0f1e;
            font-size: 14px;
            font-weight: 700;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.35);
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 26px rgba(0, 240, 255, 0.55);
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.05);
            transition: all 0.3s ease;
        }

        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            border-radius: 2px;
            background: #e2e8f0;
            transition: all 0.3s ease;
        }

        .nav-toggle:hover {
            border-color: rgba(0, 240, 255, 0.5);
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: center;
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(10, 15, 30, 0.96) 0%, rgba(10, 15, 30, 0.75) 50%, rgba(10, 15, 30, 0.45) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            padding: 80px 0;
            max-width: 780px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: #00f0ff;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }

        .hero-tag::before {
            content: "";
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #00f0ff;
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.8);
        }

        .hero-content h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            color: #ffffff;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }

        .hero-content h1 .gradient-text {
            background: linear-gradient(90deg, #00f0ff, #8b5cf6);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }

        .hero-content p {
            font-size: 17px;
            color: #aab4c8;
            line-height: 1.8;
            margin-bottom: 36px;
            max-width: 620px;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 999px;
            background: linear-gradient(135deg, #00f0ff, #06b6d4);
            color: #0a0f1e;
            font-size: 15px;
            font-weight: 700;
            box-shadow: 0 0 22px rgba(0, 240, 255, 0.35);
            transition: all 0.3s ease;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.55);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 999px;
            border: 1px solid rgba(0, 240, 255, 0.5);
            color: #00f0ff;
            font-size: 15px;
            font-weight: 600;
            background: rgba(0, 240, 255, 0.04);
            transition: all 0.3s ease;
        }

        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.12);
            box-shadow: 0 0 22px rgba(0, 240, 255, 0.25);
            transform: translateY(-2px);
        }

        /* ===== Section ===== */
        .section {
            padding: 88px 0;
        }

        .section-dark {
            background: rgba(13, 18, 34, 0.6);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 999px;
            background: rgba(139, 92, 246, 0.12);
            border: 1px solid rgba(139, 92, 246, 0.3);
            color: #c4b5fd;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        .gradient-line {
            width: 64px;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, #00f0ff, #8b5cf6);
            margin: 18px auto 0;
        }

        /* ===== 卡片 ===== */
        .method-card {
            background: linear-gradient(145deg, rgba(17, 24, 39, 0.92), rgba(13, 18, 32, 0.96));
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 20px;
            overflow: hidden;
            transition: all 0.4s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .method-card:hover {
            transform: translateY(-8px);
            border-color: rgba(0, 240, 255, 0.4);
            box-shadow: 0 24px 50px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 240, 255, 0.08);
        }

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

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

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

        .card-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(10, 15, 30, 0.7) 100%);
        }

        .card-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            z-index: 2;
            padding: 5px 14px;
            border-radius: 999px;
            background: rgba(0, 240, 255, 0.15);
            border: 1px solid rgba(0, 240, 255, 0.4);
            color: #00f0ff;
            font-size: 12px;
            font-weight: 600;
            backdrop-filter: blur(6px);
        }

        .card-body {
            padding: 28px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }

        .card-body p {
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.7;
            flex: 1;
        }

        .card-icon {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.15), rgba(139, 92, 246, 0.15));
            border: 1px solid rgba(0, 240, 255, 0.25);
            color: #00f0ff;
            font-size: 20px;
            margin-bottom: 20px;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 20px;
            color: #00f0ff;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .card-link:hover {
            gap: 10px;
            text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
        }

        /* ===== 步骤流程 ===== */
        .steps-section {
            background: linear-gradient(180deg, #0a0f1e 0%, #0d1225 100%);
        }

        .steps-wrap {
            display: flex;
            flex-direction: column;
            gap: 0;
            max-width: 840px;
            margin: 0 auto;
            position: relative;
        }

        .steps-wrap::before {
            content: "";
            position: absolute;
            left: 28px;
            top: 20px;
            bottom: 20px;
            width: 2px;
            background: linear-gradient(180deg, #00f0ff, #8b5cf6);
            opacity: 0.3;
            border-radius: 2px;
        }

        .step-item {
            position: relative;
            display: flex;
            gap: 28px;
            padding: 20px 0 20px 0;
        }

        .step-index {
            width: 56px;
            height: 56px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: linear-gradient(135deg, #00f0ff, #0891b2);
            color: #0a0f1e;
            font-size: 20px;
            font-weight: 800;
            box-shadow: 0 0 22px rgba(0, 240, 255, 0.4);
            z-index: 1;
        }

        .step-content {
            background: rgba(17, 24, 39, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 16px;
            padding: 24px 28px;
            flex: 1;
            transition: all 0.3s ease;
        }

        .step-content:hover {
            border-color: rgba(0, 240, 255, 0.25);
            background: rgba(17, 24, 39, 0.9);
        }

        .step-content h3 {
            font-size: 18px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 8px;
        }

        .step-content p {
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* ===== 提示卡片 ===== */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .tip-card {
            background: rgba(17, 24, 39, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 18px;
            padding: 32px 24px;
            text-align: center;
            transition: all 0.35s ease;
        }

        .tip-card:hover {
            transform: translateY(-5px);
            border-color: rgba(139, 92, 246, 0.4);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4), 0 0 24px rgba(139, 92, 246, 0.08);
        }

        .tip-icon {
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            margin: 0 auto 18px;
            background: rgba(139, 92, 246, 0.12);
            border: 1px solid rgba(139, 92, 246, 0.3);
            color: #c4b5fd;
            font-size: 22px;
        }

        .tip-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
        }

        .tip-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 840px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: rgba(17, 24, 39, 0.65);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 16px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.25);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 22px 28px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: #f1f5f9;
            user-select: none;
            gap: 16px;
            background: transparent;
            width: 100%;
            text-align: left;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: #00f0ff;
            transition: transform 0.3s ease;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 28px;
        }

        .faq-answer p {
            padding-bottom: 22px;
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.75;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 18px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 100px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-box {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.08), rgba(139, 92, 246, 0.08));
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: 28px;
            padding: 64px 48px;
            text-align: center;
            backdrop-filter: blur(10px);
            overflow: hidden;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            top: -60%;
            right: -20%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.1);
            filter: blur(80px);
        }

        .cta-box::after {
            content: "";
            position: absolute;
            bottom: -50%;
            left: -10%;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(139, 92, 246, 0.12);
            filter: blur(80px);
        }

        .cta-box h2 {
            font-size: 32px;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .cta-box p {
            font-size: 16px;
            color: #aab4c8;
            margin-bottom: 32px;
            position: relative;
            z-index: 1;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: rgba(6, 10, 20, 0.95);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding: 64px 0 32px;
        }

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

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, #00f0ff, #8b5cf6);
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-weak);
            padding: 6px 0;
            transition: all 0.3s ease;
        }

        .footer-col a:hover {
            color: #00f0ff;
            padding-left: 6px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: #64748b;
        }

        .footer-bottom span {
            display: inline-block;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .tips-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-content h1 {
                font-size: 36px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }
            .section-head h2 {
                font-size: 28px;
            }
            .header-inner {
                height: 64px;
            }
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(8, 13, 25, 0.98);
                flex-direction: column;
                align-items: flex-start;
                padding: 24px 24px 32px;
                gap: 20px;
                border-bottom: 1px solid rgba(0, 240, 255, 0.2);
                box-shadow: 0 24px 50px rgba(0, 0, 0, 0.5);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.3s ease;
                backdrop-filter: blur(20px);
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-cta {
                display: none;
            }
            .hero-section {
                min-height: 420px;
            }
            .hero-content h1 {
                font-size: 32px;
            }
            .hero-content p {
                font-size: 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-box {
                padding: 44px 28px;
            }
            .cta-box h2 {
                font-size: 26px;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 18px;
            }
            .logo-text {
                font-size: 15px;
                white-space: normal;
                line-height: 1.4;
            }
            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 18px;
            }
            .hero-content h1 {
                font-size: 26px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .tips-grid {
                grid-template-columns: 1fr;
            }
            .step-item {
                gap: 16px;
            }
            .step-index {
                width: 44px;
                height: 44px;
                font-size: 16px;
            }
            .steps-wrap::before {
                left: 22px;
            }
            .faq-question {
                padding: 18px 20px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 20px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-actions .btn-primary,
            .cta-actions .btn-outline {
                justify-content: center;
            }
        }

/* roulang page: article */
:root {
            --primary: #06b6d4;
            --primary-dark: #0e7490;
            --accent: #f59e0b;
            --dark-bg: #0d1321;
            --dark-bg-2: #151d2e;
            --body-bg: #f8fafc;
            --card-bg: #ffffff;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius-lg: 22px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.1);
            --shadow-glow: 0 0 24px rgba(6, 182, 212, 0.35);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            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", "Helvetica Neue", Arial, sans-serif;
            background: var(--body-bg);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        input,
        textarea {
            font-family: inherit;
        }

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

        /* ===== 导航 ===== */
        .site-header {
            background: var(--dark-bg);
            border-bottom: 2px solid rgba(6, 182, 212, 0.3);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), #0ea5e9);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 0 14px rgba(6, 182, 212, 0.4);
        }

        .logo-text {
            color: #fff;
            font-size: 17px;
            font-weight: 700;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

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

        .nav-link {
            color: rgba(255, 255, 255, 0.75);
            font-size: 14px;
            font-weight: 500;
            padding: 9px 18px;
            border-radius: 30px;
            position: relative;
            transition: var(--transition);
        }

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

        .nav-link.active {
            color: #fff;
            background: rgba(6, 182, 212, 0.18);
            box-shadow: inset 0 0 0 1px rgba(6, 182, 212, 0.4), 0 0 16px rgba(6, 182, 212, 0.18);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            box-shadow: 0 0 8px var(--primary);
        }

        .nav-cta {
            background: linear-gradient(135deg, #06b6d4, #0284c7);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 9px 22px;
            border-radius: 30px;
            white-space: nowrap;
            box-shadow: 0 4px 14px rgba(6, 182, 212, 0.35);
            transition: var(--transition);
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(6, 182, 212, 0.5);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
        }

        .nav-toggle span {
            width: 24px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: var(--transition);
        }

        /* ===== 页面横幅 ===== */
        .page-hero {
            position: relative;
            padding: 110px 0 90px;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            color: #fff;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(130deg, rgba(13, 17, 33, 0.94) 0%, rgba(13, 17, 33, 0.78) 45%, rgba(6, 182, 212, 0.45) 100%);
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 28px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.65);
        }

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

        .breadcrumb i {
            font-size: 11px;
            opacity: 0.6;
        }

        .page-hero h1 {
            font-size: 40px;
            line-height: 1.25;
            font-weight: 800;
            max-width: 800px;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }

        .hero-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 18px;
        }

        .hero-meta .badge {
            background: rgba(6, 182, 212, 0.85);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 30px;
            box-shadow: 0 0 14px rgba(6, 182, 212, 0.4);
        }

        .hero-meta span {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-meta i {
            color: var(--primary);
        }

        /* ===== 通用版块 ===== */
        .section {
            padding: 80px 0;
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px;
        }

        .section-header .subtitle {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(6, 182, 212, 0.1);
            border: 1px solid rgba(6, 182, 212, 0.25);
            padding: 5px 16px;
            border-radius: 30px;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
        }

        /* ===== 文章布局 ===== */
        .article-section {
            padding: 60px 0 80px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 40px;
            align-items: start;
        }

        .article-main {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 48px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }

        .article-content {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-main);
        }

        .article-content p {
            margin-bottom: 1.4em;
        }

        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            margin: 1.6em 0 0.7em;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 19px;
            font-weight: 700;
            margin: 1.4em 0 0.6em;
            color: var(--text-main);
        }

        .article-content ul,
        .article-content ol {
            margin: 1.2em 0;
            padding-left: 1.6em;
        }

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

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

        .article-content img {
            width: 100%;
            border-radius: 14px;
            margin: 28px 0;
            box-shadow: var(--shadow-sm);
        }

        .article-content a {
            color: var(--primary);
            font-weight: 500;
            border-bottom: 1px solid rgba(6, 182, 212, 0.3);
        }

        .article-content a:hover {
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .article-content blockquote {
            margin: 1.6em 0;
            padding: 18px 24px;
            background: rgba(6, 182, 212, 0.06);
            border-left: 4px solid var(--primary);
            border-radius: 0 12px 12px 0;
            color: var(--text-muted);
            font-style: italic;
        }

        .article-content code {
            background: #f1f5f9;
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 14px;
            color: var(--primary-dark);
        }

        /* ===== 侧边栏 ===== */
        .article-side {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .side-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }

        .side-card .side-img {
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 20px;
        }

        .side-card .side-img img {
            width: 100%;
            height: 150px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .side-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .meta-list {
            list-style: none;
            margin-bottom: 20px;
        }

        .meta-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 0;
            border-bottom: 1px dashed var(--border);
            font-size: 14px;
            color: var(--text-muted);
        }

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

        .meta-list li i {
            color: var(--primary);
            width: 16px;
            text-align: center;
        }

        .side-card .btn-primary {
            display: block;
            text-align: center;
            width: 100%;
        }

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

        .side-nav-links a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            border-radius: 10px;
            font-size: 14px;
            color: var(--text-muted);
            background: #f8fafc;
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .side-nav-links a:hover {
            color: var(--primary);
            border-color: rgba(6, 182, 212, 0.4);
            background: rgba(6, 182, 212, 0.05);
            transform: translateX(4px);
        }

        .side-nav-links a i {
            width: 18px;
            text-align: center;
            color: var(--primary);
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #06b6d4, #0284c7);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 30px;
            box-shadow: 0 4px 16px rgba(6, 182, 212, 0.3);
            transition: var(--transition);
            border: none;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(6, 182, 212, 0.45);
            color: #fff;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: 1px solid rgba(255, 255, 255, 0.6);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 30px;
            transition: var(--transition);
            background: transparent;
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }

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

        .btn-outline-dark:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(6, 182, 212, 0.05);
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            background: #f1f5f9;
            padding: 80px 0;
        }

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

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

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(6, 182, 212, 0.3);
        }

        .related-image {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .related-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.25), transparent);
        }

        .related-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

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

        .related-content {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .related-content .badge {
            align-self: flex-start;
        }

        .related-content h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--text-main);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-content p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-content time {
            font-size: 12px;
            color: #94a3b8;
            display: flex;
            align-items: center;
            gap: 6px;
            margin-top: auto;
        }

        /* ===== 徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(6, 182, 212, 0.1);
            color: var(--primary);
            border: 1px solid rgba(6, 182, 212, 0.3);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 80px 0;
        }

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

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .faq-item:hover {
            border-color: rgba(6, 182, 212, 0.35);
            box-shadow: var(--shadow-md);
        }

        .faq-item h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .faq-item h3::before {
            content: 'Q';
            display: flex;
            align-items: center;
            justify-content: center;
            width: 26px;
            height: 26px;
            border-radius: 8px;
            background: rgba(6, 182, 212, 0.12);
            color: var(--primary);
            font-size: 13px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .faq-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            padding-left: 36px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 100px 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 17, 33, 0.92), rgba(6, 182, 212, 0.75));
        }

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

        .cta-box {
            text-align: center;
            color: #fff;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-box h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-box p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
        }

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

        /* ===== 错误区域 ===== */
        .error-section {
            padding: 140px 0;
            text-align: center;
            min-height: 60vh;
            display: flex;
            align-items: center;
        }

        .error-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
            padding: 60px 48px;
            max-width: 560px;
            margin: 0 auto;
        }

        .error-card i {
            font-size: 52px;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .error-card h1 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .error-card p {
            color: var(--text-muted);
            margin-bottom: 28px;
            font-size: 15px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark-bg);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 0;
            border-top: 2px solid rgba(6, 182, 212, 0.25);
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 50px;
            padding-bottom: 40px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 16px;
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 30px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .footer-col a {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            padding: 6px 0;
            transition: var(--transition);
        }

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

        .footer-col a::before {
            content: '›';
            font-size: 16px;
            color: var(--primary);
            opacity: 0.7;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

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

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

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

            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: var(--dark-bg);
                flex-direction: column;
                align-items: stretch;
                padding: 20px 16px;
                gap: 12px;
                transform: translateY(-20px);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                border-bottom: 1px solid rgba(6, 182, 212, 0.3);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .nav-link {
                padding: 12px 18px;
                border-radius: 12px;
            }

            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .logo-text {
                font-size: 14px;
                max-width: 160px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }

            .page-hero {
                padding: 70px 0 60px;
                background-attachment: scroll;
            }

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

            .section {
                padding: 50px 0;
            }

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

            .article-main {
                padding: 28px 20px;
            }

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

            .footer-inner {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .cta-section {
                padding: 60px 0;
                background-attachment: scroll;
            }

            .cta-box h2 {
                font-size: 26px;
            }

            .faq-item {
                padding: 20px;
            }

            .faq-item p {
                padding-left: 0;
            }

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

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 22px;
            }

            .article-main {
                padding: 20px 16px;
            }

            .article-content {
                font-size: 15px;
                line-height: 1.8;
            }

            .article-content h2 {
                font-size: 20px;
            }

            .side-card {
                padding: 20px;
            }

            .cta-actions {
                flex-direction: column;
                align-items: center;
            }

            .cta-actions .btn-primary,
            .cta-actions .btn-outline {
                width: 100%;
                max-width: 280px;
            }

            .error-card {
                padding: 40px 24px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #080c14;
            --bg-surface: #101828;
            --bg-card: #151f31;
            --bg-elevated: #1a2640;
            --neon-cyan: #00d4ff;
            --neon-purple: #8b5cf6;
            --neon-pink: #ff3d81;
            --text-primary: #e6edf6;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border-glow: rgba(0, 212, 255, 0.2);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-neon: 0 0 30px rgba(0, 212, 255, 0.1);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(8, 12, 20, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 212, 255, 0.2);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 20px;
        }

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

        .logo-icon {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            border-radius: 12px;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            background: linear-gradient(90deg, #e6edf6, #00d4ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
        }

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

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all 0.3s ease;
            position: relative;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--neon-cyan);
            background: rgba(0, 212, 255, 0.08);
        }

        .nav-link.active {
            color: var(--neon-cyan);
            text-shadow: 0 0 12px rgba(0, 212, 255, 0.6);
            background: rgba(0, 212, 255, 0.1);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            border-radius: 2px;
            background: var(--neon-cyan);
            box-shadow: 0 0 12px var(--neon-cyan);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
            color: #fff;
            padding: 10px 22px;
            border-radius: 24px;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        .nav-toggle span {
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: 0.3s;
        }

        /* ===== Page Hero ===== */
        .cat-hero {
            position: relative;
            padding: 90px 0 80px;
            background: linear-gradient(135deg, rgba(8, 12, 20, 0.92), rgba(13, 20, 36, 0.92));
            overflow: hidden;
        }

        .cat-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.3;
            z-index: 0;
        }

        .cat-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(0, 212, 255, 0.1), transparent 60%);
            z-index: 1;
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .breadcrumb a {
            color: var(--neon-cyan);
            transition: color 0.3s;
        }

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

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

        .cat-hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 20px;
            background: linear-gradient(90deg, #fff, var(--neon-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 1px;
        }

        .cat-hero p {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-secondary);
            max-width: 680px;
            margin-bottom: 28px;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            background: rgba(0, 212, 255, 0.08);
            border: 1px solid rgba(0, 212, 255, 0.25);
            color: var(--neon-cyan);
            transition: all 0.3s;
        }

        .hero-tag:hover {
            background: rgba(0, 212, 255, 0.18);
            box-shadow: 0 0 15px rgba(0, 212, 255, 0.2);
        }

        .hero-info-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            margin-top: 40px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .hero-info-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .hero-info-item i {
            font-size: 18px;
            color: var(--neon-cyan);
        }

        .hero-info-item span {
            font-size: 13px;
            color: var(--text-secondary);
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: 80px 0;
        }

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

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--neon-cyan);
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }

        .section-divider {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple));
            border-radius: 3px;
            margin: 0 auto 18px;
            box-shadow: 0 0 12px rgba(0, 212, 255, 0.4);
        }

        /* ===== News Cards ===== */
        .news-section {
            background: var(--bg-primary);
            position: relative;
        }

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

        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: all 0.4s ease;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-card);
        }

        .news-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 212, 255, 0.4);
            box-shadow: 0 0 30px rgba(0, 212, 255, 0.15), 0 8px 40px rgba(0, 0, 0, 0.4);
        }

        .news-card-cover {
            position: relative;
            height: 190px;
            overflow: hidden;
        }

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

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

        .news-card-cover .cover-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(0, 212, 255, 0.9);
            color: #041018;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 16px;
            z-index: 2;
        }

        .news-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 12px;
        }

        .news-card-meta i {
            font-size: 13px;
            margin-right: 4px;
        }

        .news-card-title {
            font-size: 19px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 10px;
            color: var(--text-primary);
            transition: color 0.3s;
        }

        .news-card:hover .news-card-title {
            color: var(--neon-cyan);
        }

        .news-card-excerpt {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 18px;
            flex: 1;
        }

        .news-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--neon-cyan);
            transition: gap 0.3s;
        }

        .news-card-link:hover {
            gap: 12px;
        }

        /* ===== Stats Section ===== */
        .stats-section {
            background: linear-gradient(135deg, #0d1526, #101828);
            border-top: 1px solid rgba(0, 212, 255, 0.15);
            border-bottom: 1px solid rgba(0, 212, 255, 0.15);
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 70% 20%, rgba(139, 92, 246, 0.08), transparent 60%);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
            z-index: 1;
        }

        .stat-item {
            text-align: center;
            padding: 30px 20px;
            background: rgba(255, 255, 255, 0.02);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: all 0.3s ease;
        }

        .stat-item:hover {
            border-color: rgba(0, 212, 255, 0.3);
            box-shadow: var(--shadow-neon);
        }

        .stat-number {
            font-size: 42px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
            margin-bottom: 6px;
        }

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

        /* ===== Trending Section ===== */
        .trending-section {
            background: var(--bg-primary);
        }

        .trending-layout {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 50px;
            align-items: start;
        }

        .trending-list {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .trending-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 18px 20px;
            border-radius: var(--radius-md);
            background: transparent;
            border: 1px solid transparent;
            transition: all 0.3s ease;
        }

        .trending-item:hover {
            background: var(--bg-card);
            border-color: rgba(0, 212, 255, 0.2);
        }

        .trending-num {
            font-size: 24px;
            font-weight: 800;
            color: rgba(255, 255, 255, 0.15);
            min-width: 42px;
            text-align: center;
            transition: color 0.3s;
        }

        .trending-item:hover .trending-num {
            color: var(--neon-cyan);
        }

        .trending-item-content {
            flex: 1;
        }

        .trending-item-content h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .trending-item-content p {
            font-size: 13px;
            color: var(--text-muted);
        }

        .trending-sidebar {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 32px;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }

        .trending-sidebar h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 20px;
            color: #fff;
        }

        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .sidebar-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 18px;
            font-size: 13px;
            background: rgba(0, 212, 255, 0.06);
            border: 1px solid rgba(0, 212, 255, 0.2);
            color: var(--neon-cyan);
            transition: all 0.3s;
        }

        .sidebar-tag:hover {
            background: rgba(0, 212, 255, 0.15);
        }

        .sidebar-tip {
            margin-top: 24px;
            padding: 16px;
            background: rgba(139, 92, 246, 0.06);
            border-radius: var(--radius-md);
            border-left: 3px solid var(--neon-purple);
            font-size: 13px;
            line-height: 1.6;
            color: var(--text-secondary);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: #0a0f1a;
        }

        .faq-container {
            max-width: 780px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            overflow: hidden;
            transition: border-color 0.3s;
        }

        .faq-item.active {
            border-color: rgba(0, 212, 255, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            user-select: none;
        }

        .faq-question i {
            color: var(--neon-cyan);
            transition: transform 0.3s;
            font-size: 14px;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
        }

        .faq-answer p {
            padding: 0 24px 20px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
        }

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

        .cta-box {
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(139, 92, 246, 0.12));
            border: 1px solid rgba(0, 212, 255, 0.25);
            border-radius: 24px;
            padding: 50px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.05), transparent 50%);
            animation: ctaPulse 6s infinite;
        }

        @keyframes ctaPulse {
            0%, 100% { transform: scale(1); opacity: 0.6; }
            50% { transform: scale(1.05); opacity: 1; }
        }

        .cta-box h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
            color: #fff;
        }

        .cta-box p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 30px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
            color: #fff;
            padding: 14px 36px;
            border-radius: 28px;
            font-size: 15px;
            font-weight: 600;
            box-shadow: 0 0 25px rgba(0, 212, 255, 0.3);
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 35px rgba(0, 212, 255, 0.5);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-primary);
            padding: 14px 36px;
            border-radius: 28px;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .btn-ghost:hover {
            border-color: var(--neon-cyan);
            color: var(--neon-cyan);
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.1);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #060a10;
            border-top: 1px solid rgba(0, 212, 255, 0.1);
            padding: 60px 0 0;
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

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

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-muted);
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 6px 0;
            transition: color 0.3s, padding-left 0.3s;
        }

        .footer-col a:hover {
            color: var(--neon-cyan);
            padding-left: 6px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 12px;
        }

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

            .trending-layout {
                grid-template-columns: 1fr;
            }

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

        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }

            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(8, 12, 20, 0.98);
                flex-direction: column;
                padding: 20px 24px;
                gap: 8px;
                border-bottom: 1px solid rgba(0, 212, 255, 0.2);
                transform: translateY(-120%);
                transition: transform 0.3s ease;
                z-index: 99;
                align-items: stretch;
            }

            .main-nav.open {
                transform: translateY(0);
            }

            .nav-link {
                display: block;
                padding: 14px 16px;
            }

            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .cat-hero {
                padding: 60px 0 50px;
            }

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

            .section-block {
                padding: 60px 0;
            }

            .section-head h2 {
                font-size: 28px;
            }

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

            .footer-inner {
                grid-template-columns: 1fr;
                gap: 30px;
            }

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

            .cta-box {
                padding: 35px 20px;
            }

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

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

            .logo-text {
                font-size: 15px;
            }

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

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

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

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .stat-number {
                font-size: 30px;
            }

            .trending-item {
                padding: 14px;
                flex-wrap: wrap;
            }

            .hero-info-bar {
                gap: 12px;
            }

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