/* roulang page: index */
:root {
            --primary: #00e5ff;
            --primary-hover: #00b8d4;
            --secondary: #ff6d00;
            --accent: #76ff03;
            --bg-dark: #0a0e1a;
            --bg-medium: #111827;
            --bg-light: #1a1f2e;
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border-color: #1e293b;
            --card-bg: #1a1f2e;
            --card-border: #253049;
            --radius-sm: 6px;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(0,0,0,0.3);
            --shadow-hover: 0 8px 32px rgba(0,229,255,0.15);
            --transition: 0.25s ease;
            --container-max: 1280px;
            --nav-height: 72px;
        }
        *,*::before,*::after{box-sizing: border-box; margin:0; padding:0;}
        html{scroll-behavior:smooth; font-size:16px;}
        body{
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a{text-decoration: none; color: inherit;}
        img{max-width:100%; display:block; height:auto;}
        button,input{font-family: inherit;}
        .container{
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        /* ===== header / navigation ===== */
        .site-header{
            position: sticky;
            top:0;
            z-index: 100;
            background: rgba(10,14,26,0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .header-inner{
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo{
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--primary) 0%, #40e0ff 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }
        .logo span{
            font-weight: 600;
            font-size: 0.9rem;
            background: none;
            -webkit-text-fill-color: var(--text-secondary);
            margin-left: 6px;
        }
        .nav-menu{
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .nav-chip{
            display: inline-block;
            padding: 8px 18px;
            border-radius: 24px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            border: 1px solid transparent;
            transition: var(--transition);
            cursor: pointer;
            user-select: none;
        }
        .nav-chip:hover{
            color: var(--primary);
            border-color: rgba(0,229,255,0.3);
            background: rgba(0,229,255,0.05);
        }
        .nav-chip.active{
            background: rgba(0,229,255,0.12);
            color: var(--primary);
            border-color: var(--primary);
            font-weight: 600;
        }
        .header-actions{
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .btn{
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-primary{
            background: var(--primary);
            color: #0a0e1a;
            box-shadow: 0 4px 14px rgba(0,229,255,0.35);
        }
        .btn-primary:hover{
            background: var(--primary-hover);
            box-shadow: 0 6px 20px rgba(0,229,255,0.5);
            transform: translateY(-1px);
        }
        .btn-outline{
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover{
            background: rgba(0,229,255,0.08);
            border-color: var(--primary-hover);
        }
        .mobile-toggle{
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
        }
        @media(max-width: 900px){
            .nav-menu{
                position: fixed;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(10,14,26,0.95);
                backdrop-filter: blur(12px);
                flex-direction: column;
                align-items: stretch;
                padding: 20px 24px;
                gap: 12px;
                border-bottom: 1px solid var(--border-color);
                display: none;
            }
            .nav-menu.open{display: flex;}
            .nav-chip{padding: 12px 20px; text-align: center; border-radius: 12px;}
            .mobile-toggle{display: block;}
            .header-actions .btn{display: none;}
            .header-actions .mobile-toggle{display: block;}
        }
        /* ===== Hero ===== */
        .hero{
            position: relative;
            padding: 100px 0 120px;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            background-attachment: fixed;
            isolation: isolate;
            overflow: hidden;
        }
        .hero::after{
            content: '';
            position: absolute;
            inset:0;
            background: linear-gradient(135deg, rgba(10,14,26,0.85) 0%, rgba(10,14,26,0.6) 50%, rgba(0,229,255,0.15) 100%);
            z-index: 0;
        }
        .hero .container{position: relative; z-index: 2;}
        .hero-content{
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 32px;
        }
        .hero h1{
            font-size: clamp(2.4rem, 6vw, 3.8rem);
            font-weight: 900;
            letter-spacing: -1px;
            line-height: 1.2;
            color: #fff;
        }
        .hero h1 span{
            color: var(--primary);
            text-shadow: 0 0 20px rgba(0,229,255,0.4);
        }
        .hero-sub{
            font-size: 1.25rem;
            color: var(--text-secondary);
            max-width: 600px;
        }
        .hero-stats{
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 40px;
            margin-top: 20px;
        }
        .stat-item{
            text-align: center;
        }
        .stat-number{
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
        }
        .stat-label{
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .hero-actions{
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }
        /* sections */
        .section{
            padding: 90px 0;
        }
        .section-dark{
            background: var(--bg-medium);
        }
        .section-title{
            font-size: 2rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 16px;
        }
        .section-sub{
            text-align: center;
            color: var(--text-secondary);
            margin-bottom: 50px;
            font-size: 1.1rem;
            max-width: 650px;
            margin-left: auto;
            margin-right: auto;
        }
        .section-title .accent{
            color: var(--primary);
        }
        /* cards grid */
        .cards-grid{
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }
        .card{
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .card:hover{
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .card-icon{
            font-size: 2rem;
            color: var(--primary);
        }
        .card h3{
            font-size: 1.35rem;
            font-weight: 700;
        }
        .card p{
            color: var(--text-secondary);
            flex:1;
        }
        /* category entries */
        .category-grid{
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .category-card{
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            transition: var(--transition);
        }
        .category-card:hover{
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
        }
        .category-card img{
            width:100%;
            height:180px;
            object-fit: cover;
        }
        .category-body{
            padding: 20px;
        }
        .category-body h3{
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .category-body p{
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        /* news list */
        .news-list{
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item{
            display: flex;
            gap: 20px;
            background: var(--card-bg);
            border:1px solid var(--card-border);
            border-radius: var(--radius);
            padding: 20px;
            transition: var(--transition);
            align-items: center;
        }
        .news-item:hover{
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
        }
        .news-thumb{
            width: 100px;
            height: 70px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .news-content{
            flex:1;
        }
        .news-content h4{
            font-size: 1.1rem;
            margin-bottom: 6px;
        }
        .news-meta{
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        @media(max-width:600px){
            .news-item{flex-direction: column;}
            .news-thumb{width:100%; height:140px;}
        }
        /* data section */
        .data-row{
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: center;
        }
        .data-card{
            background: linear-gradient(145deg, #111827, #1a1f2e);
            border:1px solid var(--card-border);
            border-radius: var(--radius);
            padding: 28px 36px;
            text-align: center;
            min-width: 160px;
            flex:1 1 180px;
        }
        .data-value{
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
        }
        .data-desc{
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-top: 8px;
        }
        /* faq */
        .faq-list{
            max-width: 800px;
            margin:0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item{
            background: var(--card-bg);
            border:1px solid var(--card-border);
            border-radius: var(--radius);
            padding: 24px;
            transition: var(--transition);
        }
        .faq-item:hover{
            border-color: var(--primary);
        }
        .faq-q{
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--primary);
        }
        .faq-a{
            color: var(--text-secondary);
        }
        /* cta */
        .cta-box{
            text-align: center;
            background: linear-gradient(135deg, rgba(0,229,255,0.08), rgba(255,109,0,0.08));
            border:1px solid var(--primary);
            border-radius: var(--radius-lg);
            padding: 60px 30px;
        }
        .cta-box h2{
            font-size: 2rem;
            margin-bottom: 16px;
        }
        .cta-box .btn{
            margin-top: 20px;
        }
        /* footer */
        .site-footer{
            background: var(--bg-medium);
            border-top:1px solid var(--border-color);
            padding: 50px 0 30px;
            color: var(--text-secondary);
        }
        .footer-grid{
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px,1fr));
            gap:32px;
            margin-bottom: 30px;
        }
        .footer-col h4{
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul{
            list-style: none;
        }
        .footer-col li{
            margin-bottom: 10px;
        }
        .footer-col a{
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .footer-col a:hover{color:var(--primary);}
        .footer-bottom{
            text-align: center;
            padding-top: 24px;
            border-top:1px solid var(--border-color);
            font-size: 0.9rem;
        }
        .no-data{
            text-align: center;
            color: var(--text-muted);
            padding: 40px;
            font-size: 1.1rem;
        }

/* roulang page: category1 */
:root {
            --primary: #FF5F1F;
            --primary-hover: #E04D12;
            --secondary: #1E90FF;
            --bg: #0B0F19;
            --surface: #131824;
            --card-bg: #1A1F2E;
            --text: #F0F0F0;
            --text-muted: #A0A5B5;
            --border: #2A3040;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 4px 20px rgba(0,0,0,0.4);
            --shadow-hover: 0 8px 30px rgba(0,0,0,0.6);
            --transition: all 0.3s ease;
            --max-width: 1200px;
            --nav-height: 64px;
        }
        *,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        ul { list-style: none; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        /* 导航 */
        .site-header {
            background: rgba(11,15,25,0.95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.5px;
            white-space: nowrap;
            background: linear-gradient(135deg, var(--primary), #FF8C42);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-menu {
            display: flex;
            gap: 6px;
            align-items: center;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-menu::-webkit-scrollbar { display: none; }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            background: transparent;
            transition: var(--transition);
            white-space: nowrap;
            border: 1px solid transparent;
        }
        .nav-chip:hover {
            color: var(--text);
            background: rgba(255,255,255,0.06);
        }
        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 2px 10px rgba(255,95,31,0.3);
            border-color: var(--primary);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--text);
            font-size: 1.5rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
            .nav-menu {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(11,15,25,0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                gap: 8px;
                transform: translateY(-120%);
                opacity: 0;
                transition: transform 0.3s ease, opacity 0.3s ease;
                z-index: 999;
                overflow-y: auto;
                max-height: calc(100vh - var(--nav-height));
            }
            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-chip {
                justify-content: center;
                width: 100%;
                padding: 12px;
                font-size: 1rem;
            }
        }
        /* 页面Banner */
        .category-hero {
            background: linear-gradient(135deg, rgba(11,15,25,0.8) 0%, rgba(19,24,36,0.9) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 80px 20px;
            text-align: center;
            position: relative;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 30% 30%, rgba(255,95,31,0.15) 0%, transparent 60%);
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero h1 {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .category-hero h1 span {
            color: var(--primary);
        }
        .category-hero p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }
        .live-indicator {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,95,31,0.15);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-weight: 600;
            margin-bottom: 20px;
            font-size: 0.9rem;
        }
        .live-dot {
            width: 8px;
            height: 8px;
            background: var(--primary);
            border-radius: 50%;
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(255,95,31,0.7); }
            70% { box-shadow: 0 0 0 10px rgba(255,95,31,0); }
            100% { box-shadow: 0 0 0 0 rgba(255,95,31,0); }
        }
        @media (max-width: 768px) {
            .category-hero h1 { font-size: 1.8rem; }
        }
        /* 文章列表区块 */
        .articles-section {
            padding: 60px 0;
        }
        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 40px;
        }
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .section-title i {
            color: var(--primary);
        }
        .filter-bar {
            display: flex;
            gap: 8px;
        }
        .filter-chip {
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.85rem;
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-muted);
            cursor: pointer;
            transition: var(--transition);
        }
        .filter-chip.active, .filter-chip:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .article-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(255,95,31,0.3);
        }
        .article-card-img {
            height: 200px;
            overflow: hidden;
            background: #0B0F19;
            position: relative;
        }
        .article-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .article-card:hover .article-card-img img {
            transform: scale(1.05);
        }
        .article-card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card-tags {
            display: flex;
            gap: 6px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .tag {
            font-size: 0.7rem;
            padding: 3px 10px;
            background: rgba(255,95,31,0.12);
            color: var(--primary);
            border-radius: 50px;
            font-weight: 500;
        }
        .article-card-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card-excerpt {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 15px;
            flex: 1;
        }
        .article-card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: auto;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border: 1px solid var(--primary);
            color: var(--primary);
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }
        @media (max-width: 1024px) {
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .articles-grid {
                grid-template-columns: 1fr;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 15px;
            }
        }
        /* 数据统计横条 */
        .stats-strip {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 30px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            padding: 10px;
        }
        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 5px;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, #FF5F1F 0%, #E04D12 100%);
            padding: 60px 20px;
            text-align: center;
            margin: 60px 0 0;
        }
        .cta-content h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-content p {
            color: rgba(255,255,255,0.85);
            max-width: 600px;
            margin: 0 auto 30px;
            font-size: 1.1rem;
        }
        .btn-primary-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: #E04D12;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 10px 25px rgba(0,0,0,0.2);
            transition: var(--transition);
        }
        .btn-primary-lg:hover {
            background: #f5f5f5;
            transform: translateY(-2px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.25);
        }
        /* Footer */
        .site-footer {
            background: #070A12;
            padding: 50px 0 20px;
            border-top: 1px solid var(--border);
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-col h4 {
            color: var(--text);
            font-size: 1.1rem;
            margin-bottom: 15px;
            font-weight: 600;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid var(--border);
            font-size: 0.85rem;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: article */
:root {
            --primary: #E6393B;
            --primary-hover: #C6282B;
            --primary-glow: rgba(230, 57, 59, 0.35);
            --accent: #FFB800;
            --accent-hover: #E5A600;
            --accent-glow: rgba(255, 184, 0, 0.3);
            --bg-deep: #080C12;
            --bg-base: #0D1219;
            --bg-card: #141B24;
            --bg-card-light: #1A2230;
            --bg-surface: #1E2735;
            --bg-input: #111820;
            --text-primary: #EAECEF;
            --text-secondary: #BCC4CF;
            --text-muted: #7B8799;
            --text-dim: #5A6575;
            --border-default: #1F2A36;
            --border-light: #2A3645;
            --border-accent: rgba(255, 184, 0, 0.25);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.45);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.55);
            --shadow-glow: 0 0 40px var(--primary-glow);
            --shadow-accent: 0 0 30px var(--accent-glow);
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Menlo', monospace;
            --max-width: 1240px;
            --max-width-article: 820px;
            --nav-height: 68px;
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.65;
            min-height: 100vh;
            letter-spacing: 0.01em;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
        }
        .container--article {
            max-width: var(--max-width-article);
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(13, 18, 25, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-default);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 24px rgba(0,0,0,0.5);
            background: rgba(13, 18, 25, 0.95);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
        }
        .logo {
            font-size: 1.25rem;
            font-weight: 750;
            letter-spacing: 0.04em;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--primary), #C6282B);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.05rem;
            color: #fff;
            box-shadow: var(--shadow-glow);
        }
        .logo-text {
            background: linear-gradient(135deg, #fff, #d0d6e0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 560;
            color: var(--text-secondary);
            background: transparent;
            border: 1px solid transparent;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .nav-chip:hover {
            color: var(--text-primary);
            background: rgba(255,255,255,0.04);
            border-color: var(--border-light);
        }
        .nav-chip.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: var(--shadow-glow);
            font-weight: 650;
        }
        .nav-chip.active:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            color: #fff;
        }

        /* 移动端导航横滚 */
        @media (max-width: 768px) {
            .header-inner {
                padding: 0 16px;
            }
            .logo {
                font-size: 1.05rem;
                gap: 7px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }
            .nav-menu {
                gap: 3px;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: none;
                mask-image: linear-gradient(to right, transparent 0%, #000 8%, #000 92%, transparent 100%);
                -webkit-mask-image: linear-gradient(to right, transparent 0%, #000 8%, #000 92%, transparent 100%);
                padding: 0 4px;
            }
            .nav-menu::-webkit-scrollbar {
                display: none;
            }
            .nav-chip {
                padding: 7px 14px;
                font-size: 0.82rem;
                border-radius: 20px;
                flex-shrink: 0;
            }
        }
        @media (max-width: 480px) {
            .site-header {
                --nav-height: 58px;
            }
            .logo {
                font-size: 0.95rem;
                gap: 6px;
            }
            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 0.78rem;
                border-radius: 6px;
            }
            .nav-chip {
                padding: 6px 11px;
                font-size: 0.76rem;
                border-radius: 18px;
            }
        }

        /* ========== ARTICLE BANNER ========== */
        .article-banner {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            background-color: var(--bg-base);
            padding: 60px 0 50px;
            min-height: 260px;
            display: flex;
            align-items: flex-end;
            isolation: isolate;
            border-bottom: 1px solid var(--border-default);
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8,12,18,0.55) 0%, rgba(8,12,18,0.82) 55%, rgba(8,12,18,0.96) 100%);
            z-index: 1;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(230,57,59,0.12) 0%, transparent 65%);
            z-index: 1;
        }
        .article-banner-content {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            color: var(--text-dim);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 600;
            pointer-events: none;
        }
        .article-banner-title {
            font-size: 2.2rem;
            font-weight: 750;
            color: #fff;
            line-height: 1.3;
            letter-spacing: 0.03em;
            max-width: 780px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.55);
        }
        .article-banner-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-top: 16px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .article-banner-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-banner-meta .meta-item i {
            font-size: 0.85rem;
            color: var(--accent);
        }
        .category-tag-banner {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            background: rgba(255,184,0,0.13);
            color: var(--accent);
            border: 1px solid var(--border-accent);
            transition: all var(--transition-fast);
        }
        .category-tag-banner:hover {
            background: rgba(255,184,0,0.22);
            color: #FFCC33;
        }

        /* ========== ARTICLE MAIN ========== */
        .article-main {
            padding: 40px 0 60px;
        }
        .article-card {
            background: var(--bg-card-light);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-lg);
            padding: 44px 48px;
            box-shadow: var(--shadow-md);
            position: relative;
        }
        .article-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            opacity: 0.7;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-primary);
            word-break: break-word;
        }
        .article-body h1,
        .article-body h2,
        .article-body h3 {
            color: #fff;
            margin: 1.6em 0 0.7em;
            font-weight: 700;
            letter-spacing: 0.02em;
            line-height: 1.35;
        }
        .article-body h2 {
            font-size: 1.55rem;
            border-left: 4px solid var(--primary);
            padding-left: 16px;
        }
        .article-body h3 {
            font-size: 1.25rem;
        }
        .article-body p {
            margin-bottom: 1.1em;
            color: var(--text-secondary);
        }
        .article-body strong {
            color: #fff;
            font-weight: 650;
        }
        .article-body ul,
        .article-body ol {
            margin: 0.8em 0 1.2em 1.4em;
        }
        .article-body li {
            margin-bottom: 0.45em;
            color: var(--text-secondary);
            list-style-type: disc;
        }
        .article-body ol li {
            list-style-type: decimal;
        }
        .article-body a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition-fast);
        }
        .article-body a:hover {
            color: #FFCC33;
        }
        .article-body blockquote {
            border-left: 3px solid var(--accent);
            padding: 14px 20px;
            margin: 1.2em 0;
            background: rgba(255,184,0,0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.4em 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body code {
            background: var(--bg-input);
            padding: 3px 8px;
            border-radius: 4px;
            font-family: var(--font-mono);
            font-size: 0.9em;
            color: var(--accent);
        }
        .article-body pre {
            background: var(--bg-input);
            padding: 18px 22px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.2em 0;
            border: 1px solid var(--border-default);
        }

        /* ========== DATA STRIP ========== */
        .data-strip {
            margin-top: 36px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .data-strip-item {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            text-align: center;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .data-strip-item::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 20%;
            right: 20%;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .data-strip-item:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .data-strip-item:hover::after {
            opacity: 1;
        }
        .data-strip-number {
            font-size: 1.8rem;
            font-weight: 750;
            color: #fff;
            letter-spacing: 0.02em;
            font-variant-numeric: tabular-nums;
            font-family: var(--font-mono);
        }
        .data-strip-number .accent {
            color: var(--accent);
        }
        .data-strip-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-top: 6px;
            letter-spacing: 0.03em;
        }

        /* ========== NOT FOUND ========== */
        .not-found-card {
            background: var(--bg-card-light);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            box-shadow: var(--shadow-md);
        }
        .not-found-icon {
            font-size: 4rem;
            color: var(--text-dim);
            margin-bottom: 20px;
        }
        .not-found-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .not-found-desc {
            color: var(--text-muted);
            margin-bottom: 28px;
            font-size: 1rem;
            line-height: 1.7;
        }
        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 28px;
            font-weight: 600;
            font-size: 0.95rem;
            background: var(--primary);
            color: #fff;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-glow);
            letter-spacing: 0.02em;
        }
        .btn-back:hover {
            background: var(--primary-hover);
            box-shadow: 0 0 50px var(--primary-glow);
            transform: translateY(-1px);
            color: #fff;
        }

        /* ========== RELATED POSTS ========== */
        .related-section {
            padding: 50px 0 70px;
            border-top: 1px solid var(--border-default);
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent);
            margin-bottom: 10px;
        }
        .section-label::before {
            content: '';
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .section-title {
            font-size: 1.7rem;
            font-weight: 750;
            color: #fff;
            margin-bottom: 32px;
            letter-spacing: 0.02em;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .related-card-img {
            aspect-ratio: 16 / 9;
            object-fit: cover;
            width: 100%;
            display: block;
            background: var(--bg-base);
        }
        .related-card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card-cat {
            display: inline-block;
            font-size: 0.76rem;
            font-weight: 650;
            color: var(--accent);
            margin-bottom: 8px;
            letter-spacing: 0.04em;
        }
        .related-card-title {
            font-size: 1rem;
            font-weight: 650;
            color: #fff;
            line-height: 1.45;
            margin-bottom: 10px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card:hover .related-card-title {
            color: var(--accent);
        }
        .related-card-date {
            font-size: 0.8rem;
            color: var(--text-dim);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 65px 0;
            background: var(--bg-card);
            border-top: 1px solid var(--border-default);
            border-bottom: 1px solid var(--border-default);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 50%, rgba(230,57,59,0.08) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-inner {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .cta-title {
            font-size: 1.8rem;
            font-weight: 750;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .cta-desc {
            color: var(--text-muted);
            font-size: 1.05rem;
            margin-bottom: 30px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.03em;
            background: linear-gradient(135deg, var(--primary), #C6282B);
            color: #fff;
            box-shadow: 0 4px 28px var(--primary-glow);
            transition: all var(--transition-base);
            border: none;
        }
        .btn-cta:hover {
            box-shadow: 0 6px 40px rgba(230,57,59,0.5);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-cta i {
            font-size: 0.9rem;
            transition: transform var(--transition-fast);
        }
        .btn-cta:hover i {
            transform: translateX(3px);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-default);
            padding: 50px 0 30px;
            color: var(--text-muted);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li {
            font-size: 0.9rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col ul li i {
            font-size: 0.85rem;
            color: var(--text-dim);
            width: 18px;
            text-align: center;
        }
        .footer-col a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 22px;
            border-top: 1px solid var(--border-default);
            font-size: 0.84rem;
            color: var(--text-dim);
            letter-spacing: 0.02em;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .article-banner-title {
                font-size: 1.8rem;
            }
            .article-card {
                padding: 32px 28px;
            }
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .article-banner {
                padding: 40px 0 36px;
                min-height: 200px;
            }
            .article-banner-title {
                font-size: 1.45rem;
            }
            .article-banner-meta {
                font-size: 0.8rem;
                gap: 10px;
            }
            .breadcrumb {
                font-size: 0.78rem;
                margin-bottom: 14px;
            }
            .article-main {
                padding: 24px 0 40px;
            }
            .article-card {
                padding: 24px 18px;
                border-radius: var(--radius-md);
            }
            .article-body {
                font-size: 0.98rem;
                line-height: 1.75;
            }
            .article-body h2 {
                font-size: 1.3rem;
            }
            .article-body h3 {
                font-size: 1.1rem;
            }
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
                margin-top: 24px;
            }
            .data-strip-number {
                font-size: 1.4rem;
            }
            .data-strip-item {
                padding: 14px 12px;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .related-card-body {
                padding: 14px;
            }
            .related-card-title {
                font-size: 0.9rem;
            }
            .section-title {
                font-size: 1.35rem;
                margin-bottom: 22px;
            }
            .cta-section {
                padding: 44px 0;
            }
            .cta-title {
                font-size: 1.4rem;
            }
            .cta-desc {
                font-size: 0.95rem;
            }
            .btn-cta {
                padding: 12px 28px;
                font-size: 0.9rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .not-found-card {
                padding: 40px 20px;
            }
            .not-found-title {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 520px) {
            .article-banner-title {
                font-size: 1.2rem;
            }
            .article-card {
                padding: 18px 14px;
                border-radius: var(--radius-sm);
            }
            .article-body {
                font-size: 0.92rem;
            }
            .data-strip {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .data-strip-number {
                font-size: 1.2rem;
            }
            .data-strip-label {
                font-size: 0.72rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .related-card {
                flex-direction: row;
                align-items: stretch;
            }
            .related-card-img {
                width: 120px;
                aspect-ratio: auto;
                height: auto;
                flex-shrink: 0;
            }
            .related-card-body {
                padding: 12px;
            }
            .section-title {
                font-size: 1.2rem;
            }
            .cta-title {
                font-size: 1.2rem;
            }
            .btn-cta {
                padding: 10px 22px;
                font-size: 0.85rem;
                border-radius: 24px;
            }
        }