/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #00d4ff;
            --primary-dark: #00a8cc;
            --primary-glow: rgba(0, 212, 255, 0.35);
            --secondary: #8b5cf6;
            --secondary-glow: rgba(139, 92, 246, 0.30);
            --accent: #00ff88;
            --accent-glow: rgba(0, 255, 136, 0.25);
            --bg-dark: #0a0e17;
            --bg-card: #111827;
            --bg-elevated: #1a2235;
            --bg-deep: #060a12;
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border-color: rgba(0, 212, 255, 0.15);
            --border-glow: rgba(0, 212, 255, 0.30);
            --radius: 12px;
            --radius-lg: 20px;
            --radius-sm: 8px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(0, 212, 255, 0.06);
            --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.15);
            --transition: 0.30s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
            background: transparent;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-primary);
        }
        p {
            color: var(--text-secondary);
        }

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

        /* ===== 分割线 ===== */
        .section-divider {
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-glow), transparent);
            margin: 0;
            border: none;
        }

        /* ===== 导航 Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: rgba(10, 14, 23, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: background var(--transition), border-color var(--transition);
        }
        .site-header.scrolled {
            background: rgba(6, 10, 18, 0.96);
            border-color: var(--border-glow);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 1px;
            text-decoration: none;
            transition: color var(--transition);
        }
        .logo i {
            color: var(--primary);
            font-size: 28px;
            filter: drop-shadow(0 0 8px var(--primary-glow));
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            color: var(--primary);
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            transition: all var(--transition);
            position: relative;
        }
        .nav-list a i {
            font-size: 14px;
        }
        .nav-list a:hover {
            color: var(--text-primary);
            background: rgba(0, 212, 255, 0.06);
        }
        .nav-list a.active {
            color: var(--primary);
            background: rgba(0, 212, 255, 0.10);
            box-shadow: inset 0 -2px 0 var(--primary), 0 0 20px rgba(0, 212, 255, 0.08);
        }
        .nav-list a.active i {
            color: var(--primary);
            text-shadow: 0 0 8px var(--primary-glow);
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--secondary)) !important;
            color: #fff !important;
            border-radius: var(--radius-sm) !important;
            padding: 8px 22px !important;
            font-weight: 600 !important;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.20) !important;
            transition: all var(--transition) !important;
        }
        .nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 35px rgba(0, 212, 255, 0.35) !important;
            color: #fff !important;
        }

        /* 汉堡按钮 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: transparent;
            border: none;
            cursor: pointer;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* 移动端导航 */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            width: 100%;
            background: rgba(10, 14, 23, 0.98);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            padding: 16px 24px 24px;
            z-index: 999;
            transform: translateY(-10px);
            opacity: 0;
            transition: all var(--transition);
            pointer-events: none;
        }
        .mobile-nav.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            transition: all var(--transition);
        }
        .mobile-nav a i {
            width: 20px;
            text-align: center;
            color: var(--primary);
        }
        .mobile-nav a:hover {
            background: rgba(0, 212, 255, 0.06);
            color: var(--text-primary);
        }
        .mobile-nav a.active {
            color: var(--primary);
            background: rgba(0, 212, 255, 0.10);
        }
        .mobile-nav .nav-cta-mobile {
            margin-top: 12px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff !important;
            justify-content: center;
            border-radius: var(--radius-sm);
            font-weight: 600;
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 24px 80px;
            background: var(--bg-deep);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.30;
            z-index: 0;
            transform: scale(1.02);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(0, 212, 255, 0.12), transparent 70%),
                radial-gradient(ellipse at 70% 60%, rgba(139, 92, 246, 0.08), transparent 60%),
                linear-gradient(180deg, rgba(10, 14, 23, 0.30) 0%, var(--bg-dark) 100%);
            z-index: 1;
        }
        .hero-particles {
            position: absolute;
            inset: 0;
            z-index: 1;
            overflow: hidden;
            pointer-events: none;
        }
        .hero-particles span {
            position: absolute;
            width: 4px;
            height: 4px;
            background: var(--primary);
            border-radius: 50%;
            box-shadow: 0 0 12px var(--primary-glow);
            animation: floatUp 12s infinite ease-in-out;
            opacity: 0.2;
        }
        .hero-particles span:nth-child(1) {
            left: 10%;
            bottom: -10%;
            animation-duration: 14s;
            width: 6px;
            height: 6px;
        }
        .hero-particles span:nth-child(2) {
            left: 30%;
            bottom: -5%;
            animation-duration: 18s;
            animation-delay: 2s;
            width: 3px;
            height: 3px;
            background: var(--accent);
            box-shadow: 0 0 12px var(--accent-glow);
        }
        .hero-particles span:nth-child(3) {
            left: 55%;
            bottom: -15%;
            animation-duration: 16s;
            animation-delay: 4s;
            width: 5px;
            height: 5px;
            background: var(--secondary);
            box-shadow: 0 0 16px var(--secondary-glow);
        }
        .hero-particles span:nth-child(4) {
            left: 75%;
            bottom: -8%;
            animation-duration: 20s;
            animation-delay: 1s;
            width: 4px;
            height: 4px;
        }
        .hero-particles span:nth-child(5) {
            left: 90%;
            bottom: -12%;
            animation-duration: 15s;
            animation-delay: 3s;
            width: 7px;
            height: 7px;
            background: var(--accent);
            box-shadow: 0 0 18px var(--accent-glow);
        }
        @keyframes floatUp {
            0% {
                transform: translateY(0) scale(1);
                opacity: 0.1;
            }
            50% {
                opacity: 0.5;
            }
            100% {
                transform: translateY(-110vh) scale(0.2);
                opacity: 0;
            }
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 50px;
            background: rgba(0, 212, 255, 0.10);
            border: 1px solid rgba(0, 212, 255, 0.20);
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            margin-bottom: 24px;
            letter-spacing: 0.5px;
        }
        .hero-badge i {
            font-size: 12px;
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }
        .hero-title {
            font-size: clamp(2.6rem, 7vw, 4.8rem);
            font-weight: 800;
            line-height: 1.08;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #f1f5f9 20%, var(--primary) 50%, var(--accent) 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: clamp(1.05rem, 2vw, 1.35rem);
            color: var(--text-secondary);
            max-width: 620px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 0 30px rgba(0, 212, 255, 0.25);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 50px rgba(0, 212, 255, 0.40);
            color: #fff;
        }
        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-color);
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            background: rgba(0, 212, 255, 0.06);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 10px 20px;
            font-size: 14px;
        }

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat-number {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 1px;
        }
        .hero-stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-card);
        }
        .section-deep {
            background: var(--bg-deep);
        }
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 52px;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 16px;
            border-radius: 50px;
            background: rgba(0, 212, 255, 0.08);
            border: 1px solid rgba(0, 212, 255, 0.12);
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 16px;
        }
        .section-title {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 特色卡片 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 28px;
            border: 1px solid var(--border-color);
            transition: all 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(--primary), var(--secondary));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
            background: rgba(0, 212, 255, 0.10);
            color: var(--primary);
            transition: all var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: rgba(0, 212, 255, 0.18);
            box-shadow: 0 0 30px rgba(0, 212, 255, 0.10);
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 分类入口 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card);
        }
        .category-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            transition: transform 0.5s ease;
        }
        .category-card:hover .category-card-img {
            transform: scale(1.03);
        }
        .category-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .category-card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            text-decoration: none;
            transition: gap var(--transition);
        }
        .category-link:hover {
            gap: 14px;
            color: var(--accent);
        }

        /* ===== 最新资讯列表 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 20px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            align-items: flex-start;
        }
        .news-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }
        .news-card-img {
            width: 120px;
            height: 90px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .news-card-content {
            flex: 1;
            min-width: 0;
        }
        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 6px;
        }
        .news-card-meta .tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 50px;
            background: rgba(0, 212, 255, 0.08);
            color: var(--primary);
            font-size: 11px;
            font-weight: 600;
        }
        .news-card h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-card h3 a {
            color: var(--text-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        .news-card h3 a:hover {
            color: var(--primary);
        }
        .news-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            font-size: 15px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border-color);
        }
        .news-empty i {
            font-size: 32px;
            color: var(--text-muted);
            margin-bottom: 12px;
            opacity: 0.4;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 20px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .stat-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }
        .stat-number {
            font-size: 36px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 8px;
        }
        .stat-icon {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 12px;
            opacity: 0.6;
        }

        /* ===== 优势图文 ===== */
        .advantage-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .advantage-image {
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }
        .advantage-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            display: block;
            transition: transform 0.6s ease;
        }
        .advantage-image:hover img {
            transform: scale(1.02);
        }
        .advantage-content h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .advantage-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .advantage-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .advantage-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 15px;
            color: var(--text-secondary);
        }
        .advantage-list li i {
            color: var(--accent);
            font-size: 16px;
            width: 20px;
            text-align: center;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 740px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-glow);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: none;
            cursor: pointer;
            text-align: left;
            transition: color var(--transition);
        }
        .faq-question i {
            font-size: 14px;
            color: var(--primary);
            transition: transform var(--transition);
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 260px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-deep);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 50%, rgba(0, 212, 255, 0.06), transparent 70%);
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 60px 24px;
        }
        .cta-inner h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            font-weight: 700;
            margin-bottom: 14px;
        }
        .cta-inner p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 28px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-color);
            padding: 48px 24px 32px;
        }
        .footer-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            max-width: 280px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 14px;
            color: var(--text-muted);
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            max-width: var(--container-max);
            margin: 32px auto 0;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-muted);
            font-size: 16px;
            transition: all var(--transition);
            text-decoration: none;
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .advantage-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .advantage-image img {
                height: 280px;
            }
        }

        @media (max-width: 768px) {
            .nav-list {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-nav {
                display: block;
            }
            .hero {
                min-height: 80vh;
                padding: 100px 20px 60px;
            }
            .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
            }
            .hero-stat-number {
                font-size: 22px;
            }
            .section {
                padding: 56px 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .category-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .news-card {
                flex-direction: column;
                padding: 16px;
            }
            .news-card-img {
                width: 100%;
                height: 160px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card {
                padding: 24px 16px;
            }
            .stat-number {
                font-size: 28px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .advantage-image img {
                height: 220px;
            }
            .hero-title {
                font-size: clamp(2rem, 8vw, 3rem);
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 18px;
                font-size: 14px;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .hero {
                padding: 90px 16px 50px;
                min-height: 70vh;
            }
            .hero-stats {
                gap: 16px;
                flex-direction: column;
                align-items: center;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .section {
                padding: 44px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 24px;
            }
            .news-card-img {
                height: 140px;
            }
            .feature-card {
                padding: 24px 20px;
            }
            .category-card-img {
                height: 160px;
            }
            .mobile-nav {
                padding: 12px 16px 20px;
            }
            .footer-inner {
                gap: 24px;
            }
            .btn {
                padding: 12px 24px;
                font-size: 15px;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* 滚动条 */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-deep);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--border-glow);
        }

        /* 选中文本 */
        ::selection {
            background: var(--primary);
            color: #fff;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #ff2d7b;
            --primary-dark: #d91a63;
            --primary-glow: rgba(255, 45, 123, 0.4);
            --primary-light: rgba(255, 45, 123, 0.12);
            --accent: #7c3aed;
            --accent-glow: rgba(124, 58, 237, 0.35);
            --bg-dark: #0b0c10;
            --bg-card: #14161d;
            --bg-card-hover: #1c1f2a;
            --bg-section: #0f1118;
            --bg-section-alt: #191b24;
            --text-primary: #f0f0f5;
            --text-secondary: #a0a4b8;
            --text-muted: #6b7084;
            --border-color: #2a2d3a;
            --border-glow: rgba(255, 45, 123, 0.2);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.04);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(255, 45, 123, 0.15);
            --shadow-glow: 0 0 30px rgba(255, 45, 123, 0.08);
            --transition: 0.3s cubic-bezier(0.22, 1, 0.36, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            --container-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-dark);
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            color: var(--text-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
        }
        h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
        }
        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
        }
        h3 {
            font-size: clamp(1.2rem, 2.5vw, 1.6rem);
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }
        p:last-child {
            margin-bottom: 0;
        }
        ::selection {
            background: var(--primary);
            color: #fff;
        }
        :focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 12, 16, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-height);
            transition: background var(--transition), border-color var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.6rem;
            filter: drop-shadow(0 0 8px var(--primary-glow));
        }
        .logo span {
            background: linear-gradient(135deg, var(--text-primary), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover span {
            -webkit-text-fill-color: var(--primary);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 7px;
            transition: all var(--transition);
            position: relative;
        }
        .nav-list a i {
            font-size: 0.85rem;
        }
        .nav-list a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-list a.active {
            color: #fff;
            background: rgba(255, 45, 123, 0.15);
            box-shadow: inset 0 0 0 1px var(--border-glow);
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            box-shadow: 0 0 12px var(--primary-glow);
        }
        .nav-list a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-weight: 600;
            padding: 8px 24px;
            box-shadow: 0 4px 20px rgba(255, 45, 123, 0.3);
            border: none;
        }
        .nav-list a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(255, 45, 123, 0.45);
            background: linear-gradient(135deg, var(--primary-dark), var(--accent));
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* ===== Mobile Nav ===== */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: rgba(11, 12, 16, 0.98);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            padding: 20px 24px;
            z-index: 999;
            flex-direction: column;
            gap: 8px;
            transform: translateY(-10px);
            opacity: 0;
            transition: all 0.3s ease;
            pointer-events: none;
        }
        .mobile-nav.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-nav a {
            padding: 12px 16px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 12px;
            transition: all var(--transition);
        }
        .mobile-nav a i {
            width: 20px;
            text-align: center;
        }
        .mobile-nav a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
        }
        .mobile-nav a.active {
            color: var(--primary);
            background: rgba(255, 45, 123, 0.1);
        }
        .mobile-nav a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            justify-content: center;
            margin-top: 8px;
        }

        /* ===== Page Banner ===== */
        .page-banner {
            padding: 140px 0 80px;
            background: var(--bg-section);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(255, 45, 123, 0.08), rgba(124, 58, 237, 0.05));
            pointer-events: none;
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }
        .page-banner h1 {
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff, var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-banner p {
            max-width: 640px;
            font-size: 1.1rem;
            color: var(--text-secondary);
        }
        .page-banner .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
            border: 1px solid var(--border-glow);
        }
        .page-banner .banner-tag i {
            font-size: 0.8rem;
        }

        /* ===== Filter Bar ===== */
        .filter-bar {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            padding: 16px 0;
            position: sticky;
            top: var(--header-height);
            z-index: 100;
            backdrop-filter: blur(12px);
        }
        .filter-bar .container {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .filter-btn {
            padding: 6px 18px;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            cursor: pointer;
        }
        .filter-btn:hover {
            color: var(--text-primary);
            border-color: rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.06);
        }
        .filter-btn.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 0 20px var(--primary-glow);
        }
        .filter-btn i {
            margin-right: 6px;
            font-size: 0.8rem;
        }
        .filter-search {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            border-radius: 100px;
            padding: 4px 4px 4px 16px;
            transition: border-color var(--transition);
        }
        .filter-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 16px var(--primary-glow);
        }
        .filter-search input {
            background: none;
            border: none;
            color: var(--text-primary);
            padding: 6px 0;
            min-width: 160px;
            font-size: 0.9rem;
        }
        .filter-search input::placeholder {
            color: var(--text-muted);
        }
        .filter-search button {
            padding: 6px 16px;
            border-radius: 100px;
            background: var(--primary);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 600;
            transition: all var(--transition);
        }
        .filter-search button:hover {
            background: var(--primary-dark);
            box-shadow: 0 0 20px var(--primary-glow);
        }

        /* ===== News Grid ===== */
        .news-section {
            padding: 60px 0 80px;
            background: var(--bg-dark);
        }
        .news-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 28px;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            display: flex;
            flex-direction: row;
            box-shadow: var(--shadow-card);
        }
        .news-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            background: var(--bg-card-hover);
        }
        .news-card .card-img {
            flex: 0 0 320px;
            max-width: 320px;
            min-height: 220px;
            position: relative;
            overflow: hidden;
        }
        .news-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .news-card:hover .card-img img {
            transform: scale(1.05);
        }
        .news-card .card-img .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 100px;
            box-shadow: 0 0 16px var(--primary-glow);
        }
        .news-card .card-body {
            flex: 1;
            padding: 28px 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .news-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .news-card .card-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .news-card .card-meta .tag {
            background: rgba(124, 58, 237, 0.15);
            color: var(--accent);
            padding: 2px 10px;
            border-radius: 100px;
            font-weight: 500;
        }
        .news-card h3 {
            margin-bottom: 10px;
            font-size: 1.25rem;
        }
        .news-card h3 a {
            color: var(--text-primary);
        }
        .news-card h3 a:hover {
            color: var(--primary);
        }
        .news-card .card-excerpt {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
        }
        .news-card .read-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            transition: gap var(--transition);
        }
        .news-card .read-more:hover {
            gap: 12px;
            color: #fff;
        }
        .news-card .read-more i {
            font-size: 0.8rem;
        }
        .news-card .card-stats {
            display: flex;
            gap: 14px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .news-card .card-stats span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ===== Featured / 热门推荐 ===== */
        .featured-section {
            padding: 60px 0;
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 36px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .section-header h2 {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .section-header h2 i {
            color: var(--primary);
            font-size: 1.6rem;
            filter: drop-shadow(0 0 8px var(--primary-glow));
        }
        .section-header .section-link {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition);
        }
        .section-header .section-link:hover {
            color: var(--primary);
        }
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .featured-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            box-shadow: var(--shadow-card);
        }
        .featured-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .featured-card .fcard-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .featured-card .fcard-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .featured-card:hover .fcard-img img {
            transform: scale(1.06);
        }
        .featured-card .fcard-img .play-overlay {
            position: absolute;
            inset: 0;
            background: rgba(0, 0, 0, 0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            transition: opacity var(--transition);
        }
        .featured-card:hover .fcard-img .play-overlay {
            opacity: 1;
        }
        .featured-card .fcard-img .play-overlay i {
            font-size: 2.8rem;
            color: #fff;
            filter: drop-shadow(0 0 20px rgba(255, 45, 123, 0.6));
        }
        .featured-card .fcard-body {
            padding: 18px 20px 20px;
        }
        .featured-card .fcard-body .fmeta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 8px;
        }
        .featured-card .fcard-body h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .featured-card .fcard-body h4 a {
            color: var(--text-primary);
        }
        .featured-card .fcard-body h4 a:hover {
            color: var(--primary);
        }
        .featured-card .fcard-body p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== Category Tags ===== */
        .tags-section {
            padding: 50px 0;
            background: var(--bg-dark);
        }
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .tags-cloud a {
            padding: 8px 20px;
            border-radius: 100px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .tags-cloud a:hover {
            color: var(--primary);
            border-color: var(--primary);
            background: var(--primary-light);
            box-shadow: 0 0 20px var(--primary-glow);
            transform: translateY(-2px);
        }
        .tags-cloud a i {
            font-size: 0.8rem;
        }

        /* ===== Pagination ===== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            margin-top: 48px;
            gap: 6px;
        }
        .pagination-wrap a,
        .pagination-wrap span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .pagination-wrap a:hover {
            color: var(--primary);
            border-color: var(--primary);
            background: var(--primary-light);
        }
        .pagination-wrap .current {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 0 20px var(--primary-glow);
        }
        .pagination-wrap .dots {
            border: none;
            background: none;
            color: var(--text-muted);
        }

        /* ===== Newsletter / CTA ===== */
        .cta-newsletter {
            padding: 60px 0;
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
        }
        .cta-newsletter .cta-box {
            background: linear-gradient(135deg, rgba(255, 45, 123, 0.08), rgba(124, 58, 237, 0.06));
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            box-shadow: var(--shadow-glow);
        }
        .cta-newsletter .cta-box h3 {
            font-size: 1.6rem;
            margin-bottom: 10px;
        }
        .cta-newsletter .cta-box p {
            max-width: 520px;
            margin: 0 auto 24px;
        }
        .cta-newsletter .cta-form {
            display: flex;
            justify-content: center;
            gap: 10px;
            flex-wrap: wrap;
            max-width: 500px;
            margin: 0 auto;
        }
        .cta-newsletter .cta-form input {
            flex: 1;
            min-width: 200px;
            padding: 12px 20px;
            border-radius: 100px;
            border: 1px solid var(--border-color);
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-primary);
            font-size: 0.95rem;
            transition: border-color var(--transition);
        }
        .cta-newsletter .cta-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 16px var(--primary-glow);
        }
        .cta-newsletter .cta-form input::placeholder {
            color: var(--text-muted);
        }
        .cta-newsletter .cta-form button {
            padding: 12px 32px;
            border-radius: 100px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            box-shadow: 0 4px 20px rgba(255, 45, 123, 0.3);
            transition: all var(--transition);
        }
        .cta-newsletter .cta-form button:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(255, 45, 123, 0.45);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 0;
        }
        .footer-inner {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.88rem;
            padding: 4px 0;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary);
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 4px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 1.1rem;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 0 20px var(--primary-glow);
            transform: translateY(-3px);
        }
        .footer-bottom {
            max-width: var(--container-width);
            margin: 32px auto 0;
            padding: 20px 24px;
            border-top: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        .footer-bottom span a {
            margin: 0 4px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .news-card .card-img {
                flex: 0 0 240px;
                max-width: 240px;
            }
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 768px) {
            .nav-list {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .mobile-nav {
                display: flex;
            }
            .page-banner {
                padding: 120px 0 60px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .filter-bar .container {
                gap: 6px;
            }
            .filter-search {
                width: 100%;
                margin-left: 0;
                margin-top: 6px;
            }
            .filter-search input {
                min-width: 100px;
                flex: 1;
            }
            .news-card {
                flex-direction: column;
            }
            .news-card .card-img {
                flex: 0 0 200px;
                max-width: 100%;
                min-height: 200px;
            }
            .news-card .card-body {
                padding: 20px 22px;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-newsletter .cta-box {
                padding: 32px 20px;
            }
            .cta-newsletter .cta-form input {
                min-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .page-banner p {
                font-size: 0.95rem;
            }
            .news-card .card-body {
                padding: 16px 18px;
            }
            .news-card .card-meta {
                flex-wrap: wrap;
                gap: 8px;
            }
            .news-card h3 {
                font-size: 1.1rem;
            }
            .filter-btn {
                font-size: 0.78rem;
                padding: 4px 14px;
            }
            .filter-search input {
                min-width: 80px;
                font-size: 0.82rem;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
            }
            .tags-cloud a {
                font-size: 0.82rem;
                padding: 6px 16px;
            }
            .pagination-wrap a,
            .pagination-wrap span {
                min-width: 34px;
                height: 34px;
                font-size: 0.82rem;
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .news-card,
        .featured-card {
            animation: fadeUp 0.5s ease forwards;
        }
        .news-card:nth-child(2) {
            animation-delay: 0.08s;
        }
        .news-card:nth-child(3) {
            animation-delay: 0.16s;
        }
        .news-card:nth-child(4) {
            animation-delay: 0.24s;
        }
        .news-card:nth-child(5) {
            animation-delay: 0.32s;
        }
        .news-card:nth-child(6) {
            animation-delay: 0.4s;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --neon-cyan: #00d4ff;
            --neon-purple: #7c3aed;
            --neon-pink: #f472b6;
            --neon-glow: rgba(0, 212, 255, 0.25);
            --bg-deep: #0a0a1a;
            --bg-card: #12122a;
            --bg-card-hover: #1a1a3a;
            --bg-elevated: #1e1e40;
            --text-white: #f0f0f8;
            --text-light: #b8b8d0;
            --text-muted: #7a7a9a;
            --border-glow: rgba(0, 212, 255, 0.15);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px var(--border-glow);
            --shadow-glow: 0 0 30px var(--neon-glow);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container-max: 1200px;
            --header-h: 70px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-deep);
            color: var(--text-white);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
        }
        a {
            color: var(--neon-cyan);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #fff;
            text-shadow: 0 0 12px var(--neon-glow);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
            background: none;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-white);
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-h);
            z-index: 1000;
            background: rgba(10, 10, 26, 0.92);
            backdrop-filter: blur(16px) saturate(1.4);
            border-bottom: 1px solid var(--border-glow);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            transition: var(--transition);
        }
        .logo i {
            color: var(--neon-cyan);
            font-size: 28px;
            filter: drop-shadow(0 0 8px var(--neon-glow));
        }
        .logo span {
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            transform: scale(1.02);
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            position: relative;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a i {
            font-size: 14px;
        }
        .nav-list a:hover {
            color: var(--text-white);
            background: rgba(0, 212, 255, 0.08);
        }
        .nav-list a.active {
            color: var(--neon-cyan);
            background: rgba(0, 212, 255, 0.12);
            box-shadow: inset 0 -2px 0 var(--neon-cyan), 0 0 20px rgba(0, 212, 255, 0.08);
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: var(--neon-cyan);
            box-shadow: 0 0 12px var(--neon-cyan);
            border-radius: 2px;
        }
        .nav-list .nav-cta {
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
            color: #fff !important;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
            border: none;
        }
        .nav-list .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 35px rgba(0, 212, 255, 0.4);
            background: linear-gradient(135deg, #00e5ff, #8b5cf6);
        }

        /* 移动端汉堡 */
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            background: transparent;
            border: none;
        }
        .nav-toggle span {
            width: 28px;
            height: 2.5px;
            background: var(--text-white);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .nav-list {
                position: fixed;
                top: var(--header-h);
                left: 0;
                width: 100%;
                background: rgba(10, 10, 26, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 30px;
                gap: 6px;
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-bottom: 1px solid var(--border-glow);
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-list a {
                width: 100%;
                padding: 12px 18px;
                font-size: 16px;
                justify-content: center;
            }
            .nav-list .nav-cta {
                margin-top: 8px;
                text-align: center;
            }
            .nav-list a.active::after {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .logo {
                font-size: 20px;
            }
            .logo i {
                font-size: 22px;
            }
            .nav-list a {
                font-size: 15px;
                padding: 10px 14px;
            }
        }

        /* ===== Banner 文章头图 ===== */
        .article-banner {
            position: relative;
            margin-top: var(--header-h);
            padding: 100px 0 80px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            isolation: isolate;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 10, 26, 0.85) 0%, rgba(10, 10, 26, 0.70) 50%, var(--bg-deep) 100%);
            z-index: 0;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
            z-index: 0;
        }
        .article-banner .container {
            position: relative;
            z-index: 1;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a {
            color: var(--text-muted);
            transition: var(--transition);
        }
        .article-breadcrumb a:hover {
            color: var(--neon-cyan);
        }
        .article-breadcrumb .sep {
            color: var(--text-muted);
            font-size: 12px;
        }
        .article-breadcrumb .current {
            color: var(--neon-cyan);
        }
        .article-banner h1 {
            font-size: clamp(28px, 4.5vw, 52px);
            font-weight: 800;
            line-height: 1.25;
            max-width: 900px;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #fff 60%, var(--neon-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px 28px;
            font-size: 15px;
            color: var(--text-light);
            align-items: center;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i {
            color: var(--neon-cyan);
            font-size: 14px;
        }
        .article-meta .category-tag {
            display: inline-block;
            padding: 3px 14px;
            border-radius: 50px;
            background: rgba(0, 212, 255, 0.15);
            color: var(--neon-cyan);
            font-size: 13px;
            font-weight: 600;
            border: 1px solid rgba(0, 212, 255, 0.2);
        }
        @media (max-width: 768px) {
            .article-banner {
                padding: 70px 0 50px;
            }
            .article-banner h1 {
                font-size: clamp(22px, 6vw, 34px);
            }
            .article-meta {
                gap: 12px 18px;
                font-size: 14px;
            }
        }
        @media (max-width: 520px) {
            .article-banner {
                padding: 60px 0 40px;
            }
            .article-banner h1 {
                font-size: 22px;
            }
            .article-meta {
                flex-direction: column;
                gap: 8px;
                align-items: flex-start;
            }
        }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 60px 0 80px;
            background: var(--bg-deep);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 48px;
        }
        .article-content {
            min-width: 0;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            border: 1px solid var(--border-glow);
            box-shadow: var(--shadow-card);
        }
        .article-body p {
            margin-bottom: 20px;
            color: var(--text-light);
            font-size: 17px;
            line-height: 1.85;
        }
        .article-body h2 {
            font-size: 26px;
            margin-top: 40px;
            margin-bottom: 16px;
            color: var(--text-white);
        }
        .article-body h3 {
            font-size: 20px;
            margin-top: 32px;
            margin-bottom: 12px;
            color: var(--text-white);
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 20px;
            padding-left: 24px;
            color: var(--text-light);
        }
        .article-body li {
            margin-bottom: 8px;
            list-style: disc;
        }
        .article-body img {
            margin: 32px auto;
            border-radius: var(--radius-md);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
            max-width: 100%;
        }
        .article-body blockquote {
            border-left: 4px solid var(--neon-cyan);
            padding: 16px 24px;
            margin: 24px 0;
            background: rgba(0, 212, 255, 0.05);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-body a {
            color: var(--neon-cyan);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body a:hover {
            color: #fff;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border-glow);
        }
        .article-tags .tag {
            padding: 6px 18px;
            border-radius: 50px;
            background: rgba(124, 58, 237, 0.12);
            color: var(--neon-purple);
            font-size: 13px;
            font-weight: 500;
            border: 1px solid rgba(124, 58, 237, 0.2);
            transition: var(--transition);
        }
        .article-tags .tag:hover {
            background: rgba(124, 58, 237, 0.25);
            border-color: var(--neon-purple);
            color: #fff;
        }

        /* 上一篇 / 下一篇 */
        .article-pagination {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 40px;
        }
        .article-pagination a {
            display: flex;
            flex-direction: column;
            padding: 20px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-glow);
            transition: var(--transition);
            gap: 6px;
        }
        .article-pagination a:hover {
            background: var(--bg-card-hover);
            border-color: var(--neon-cyan);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }
        .article-pagination .label {
            font-size: 13px;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .article-pagination .title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
        }
        .article-pagination .next {
            text-align: right;
        }
        @media (max-width: 768px) {
            .article-pagination {
                grid-template-columns: 1fr;
            }
            .article-pagination .next {
                text-align: left;
            }
        }

        /* 侧栏 */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--border-glow);
            box-shadow: var(--shadow-card);
        }
        .sidebar-card h3 {
            font-size: 18px;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-white);
        }
        .sidebar-card h3 i {
            color: var(--neon-cyan);
        }
        .sidebar-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .sidebar-list a {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            transition: var(--transition);
        }
        .sidebar-list a:last-child {
            border-bottom: none;
        }
        .sidebar-list a:hover {
            padding-left: 6px;
        }
        .sidebar-list .thumb {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-elevated);
        }
        .sidebar-list .info {
            flex: 1;
            min-width: 0;
        }
        .sidebar-list .info .s-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-white);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
        }
        .sidebar-list .info .s-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 4px;
            display: block;
        }

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 600px) {
            .article-body {
                padding: 24px 18px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .article-body p {
                font-size: 16px;
            }
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 70px 0 80px;
            background: var(--bg-card);
            border-top: 1px solid var(--border-glow);
            border-bottom: 1px solid var(--border-glow);
        }
        .related-section .section-title {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-section .section-title i {
            color: var(--neon-cyan);
        }
        .related-section .section-sub {
            color: var(--text-muted);
            margin-bottom: 36px;
            font-size: 16px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-deep);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-glow);
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-6px);
            border-color: var(--neon-cyan);
            box-shadow: var(--shadow-glow);
        }
        .related-card .r-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            background: var(--bg-elevated);
            display: block;
        }
        .related-card .r-body {
            padding: 18px 20px 22px;
        }
        .related-card .r-body .r-cat {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 50px;
            background: rgba(0, 212, 255, 0.12);
            color: var(--neon-cyan);
            font-size: 12px;
            font-weight: 500;
            margin-bottom: 8px;
        }
        .related-card .r-body .r-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
            margin-bottom: 8px;
            transition: var(--transition);
        }
        .related-card:hover .r-body .r-title {
            color: var(--neon-cyan);
        }
        .related-card .r-body .r-date {
            font-size: 13px;
            color: var(--text-muted);
        }

        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 600px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-section .section-title {
                font-size: 22px;
            }
        }

        /* ===== CTA ===== */
        .article-cta {
            padding: 70px 0;
            background: var(--bg-deep);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .article-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .article-cta .cta-content {
            position: relative;
            z-index: 1;
        }
        .article-cta h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .article-cta p {
            color: var(--text-light);
            font-size: 18px;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .article-cta .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            border-radius: 50px;
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            box-shadow: 0 0 30px rgba(0, 212, 255, 0.25);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .article-cta .cta-btn:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 0 50px rgba(0, 212, 255, 0.4);
        }
        @media (max-width: 600px) {
            .article-cta h2 {
                font-size: 24px;
            }
            .article-cta p {
                font-size: 16px;
            }
            .article-cta .cta-btn {
                padding: 14px 28px;
                font-size: 16px;
            }
        }

        /* ===== 内容未找到 ===== */
        .not-found-body {
            text-align: center;
            padding: 80px 24px;
        }
        .not-found-body .nf-icon {
            font-size: 64px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .not-found-body h2 {
            font-size: 28px;
            margin-bottom: 12px;
        }
        .not-found-body p {
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .not-found-body .back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            background: var(--neon-cyan);
            color: #0a0a1a;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-body .back-home:hover {
            background: #fff;
            transform: translateY(-2px);
            box-shadow: 0 0 30px var(--neon-glow);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-glow);
            padding: 60px 0 0;
        }
        .footer-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px 40px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
        }
        .footer-brand .logo {
            font-size: 22px;
            margin-bottom: 16px;
            display: inline-flex;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 14px;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--neon-cyan);
            padding-left: 4px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-light);
            font-size: 18px;
            border: 1px solid var(--border-glow);
            transition: var(--transition);
            padding: 0;
        }
        .footer-social a:hover {
            background: var(--neon-cyan);
            color: #0a0a1a;
            border-color: var(--neon-cyan);
            transform: translateY(-3px);
            box-shadow: 0 0 25px var(--neon-glow);
            padding: 0;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-glow);
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            max-width: var(--container-max);
            margin: 0 auto;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--neon-cyan);
        }

        @media (max-width: 1024px) {
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 600px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 30px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                padding: 16px 16px;
            }
            .footer-social {
                justify-content: center;
            }
        }

        /* ===== 辅助 ===== */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .text-center {
            text-align: center;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }

        /* 焦点可见性 */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--neon-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }