/* roulang page: index */
:root {
            --brand-500: #3b82f6;
            --brand-600: #2563eb;
            --brand-700: #1d4ed8;
            --accent-500: #d946ef;
            --accent-600: #c026d3;
            --warm-500: #f59e0b;
            --surface-light: #f8fafc;
            --surface-card: #ffffff;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --border-light: #e2e8f0;
            --radius-xl: 0.875rem;
            --radius-2xl: 1.125rem;
            --radius-3xl: 1.5rem;
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            line-height: 1.7;
            background-color: #f8fafc;
            color: #0f172a;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        a:focus-visible {
            outline: 2px solid var(--brand-500);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
        }
        button:focus-visible {
            outline: 2px solid var(--brand-500);
            outline-offset: 3px;
            border-radius: 6px;
        }
        input {
            font-family: inherit;
        }

        /* 容器 */
        .container-site {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        @media (min-width: 768px) {
            .container-site {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        @media (min-width: 1024px) {
            .container-site {
                padding-left: 2.5rem;
                padding-right: 2.5rem;
            }
        }

        /* 导航 - 杂志频道风格 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 2px 20px rgba(0,0,0,0.08);
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 0.875rem;
            padding-bottom: 0.875rem;
        }
        .logo-text {
            font-family: 'Plus Jakarta Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            font-size: 1.5rem;
            font-weight: 800;
            color: #0f172a;
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .logo-text .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, #3b82f6, #8b5cf6);
            border-radius: 10px;
            color: #fff;
            font-weight: 900;
            font-size: 1.1rem;
            letter-spacing: 0;
        }
        .channel-row {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            padding-bottom: 0.75rem;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .channel-row::-webkit-scrollbar {
            display: none;
        }
        .channel-tag {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1.1rem;
            font-size: 0.9rem;
            font-weight: 600;
            color: #475569;
            border-radius: 9999px;
            white-space: nowrap;
            transition: all 0.25s ease;
            position: relative;
            letter-spacing: 0.01em;
        }
        .channel-tag:hover {
            color: #1e293b;
            background: #f1f5f9;
        }
        .channel-tag.active {
            color: #ffffff;
            background: linear-gradient(135deg, #3b82f6, #6366f1);
            box-shadow: 0 4px 14px rgba(59,130,246,0.35);
        }
        .channel-tag .tag-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            margin-right: 0.45rem;
            background: currentColor;
            opacity: 0.5;
            flex-shrink: 0;
        }
        .channel-tag.active .tag-dot {
            opacity: 1;
            background: #fff;
        }

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: #0f172a;
            padding: 0.4rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .mobile-menu-btn:hover {
            background: #f1f5f9;
        }
        @media (max-width: 767px) {
            .mobile-menu-btn {
                display: block;
            }
            .channel-row {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border-light);
                padding: 0.75rem 1.25rem;
                box-shadow: 0 10px 30px rgba(0,0,0,0.1);
                gap: 0.125rem;
                border-radius: 0 0 16px 16px;
            }
            .channel-row.open {
                display: flex;
            }
            .channel-tag {
                border-radius: 10px;
                padding: 0.7rem 1rem;
                width: 100%;
                justify-content: flex-start;
            }
        }

        /* Hero */
        .hero-section {
            position: relative;
            background: linear-gradient(160deg, #eff6ff 0%, #fdf4ff 40%, #fef3c7 100%);
            overflow: hidden;
            padding: 3.5rem 0 4rem;
        }
        @media (min-width: 768px) {
            .hero-section {
                padding: 5rem 0 5.5rem;
            }
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -120px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(59,130,246,0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(217,70,239,0.10) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: #fff;
            border: 1px solid #e2e8f0;
            border-radius: 9999px;
            padding: 0.4rem 1rem;
            font-size: 0.875rem;
            font-weight: 600;
            color: #475569;
            box-shadow: 0 2px 8px rgba(0,0,0,0.04);
            animation: fadeInUp 0.6s ease;
        }
        .hero-badge .pulse-dot {
            width: 8px;
            height: 8px;
            background: #10b981;
            border-radius: 50%;
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.4); }
        }
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(18px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* 板块间距 */
        .section-pad {
            padding: 3.5rem 0;
        }
        @media (min-width: 768px) {
            .section-pad {
                padding: 5rem 0;
            }
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: #3b82f6;
            margin-bottom: 0.5rem;
        }
        .section-title {
            font-family: 'Plus Jakarta Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            font-size: 1.75rem;
            font-weight: 800;
            color: #0f172a;
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
            line-height: 1.25;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 2.25rem;
            }
        }
        .section-desc {
            color: #64748b;
            font-size: 1.05rem;
            line-height: 1.7;
            max-width: 640px;
        }

        /* 卡片 */
        .card-base {
            background: #fff;
            border-radius: var(--radius-2xl);
            border: 1px solid #e8ecf1;
            transition: all 0.3s ease;
            overflow: hidden;
        }
        .card-base:hover {
            box-shadow: 0 12px 36px rgba(0,0,0,0.10);
            transform: translateY(-3px);
            border-color: #d0d7e2;
        }
        .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
            background: #f1f5f9;
        }
        .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .card-base:hover .card-img-wrap img {
            transform: scale(1.05);
        }

        /* 按钮 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 1.75rem;
            background: linear-gradient(135deg, #3b82f6, #6366f1);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            border-radius: 9999px;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 6px 20px rgba(59,130,246,0.3);
            white-space: nowrap;
        }
        .btn-primary:hover {
            box-shadow: 0 10px 28px rgba(59,130,246,0.45);
            transform: translateY(-2px);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.6rem;
            background: #fff;
            color: #1e293b;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: 9999px;
            border: 2px solid #e2e8f0;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .btn-outline:hover {
            border-color: #3b82f6;
            color: #3b82f6;
            box-shadow: 0 4px 16px rgba(59,130,246,0.12);
        }

        /* FAQ */
        .faq-item {
            border: 1px solid #e8ecf1;
            border-radius: var(--radius-xl);
            padding: 1.25rem 1.5rem;
            background: #fff;
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: #cbd5e1;
            box-shadow: 0 4px 16px rgba(0,0,0,0.05);
        }
        .faq-item summary {
            font-weight: 700;
            font-size: 1.05rem;
            color: #0f172a;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-arrow {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #f1f5f9;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            font-size: 0.75rem;
            color: #64748b;
        }
        .faq-item[open] .faq-arrow {
            background: #3b82f6;
            color: #fff;
            transform: rotate(180deg);
        }
        .faq-answer {
            padding-top: 0.75rem;
            color: #475569;
            line-height: 1.7;
            font-size: 0.95rem;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(160deg, #0f172a 0%, #1e293b 50%, #1e1b4b 100%);
            border-radius: var(--radius-3xl);
            overflow: hidden;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -60px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(99,102,241,0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        /* 页脚 */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 3rem 0 2rem;
            font-size: 0.9rem;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
            padding-bottom: 2rem;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            margin-bottom: 1.5rem;
        }
        .footer-links a {
            color: #94a3b8;
            transition: color 0.25s;
            font-weight: 500;
        }
        .footer-links a:hover {
            color: #fff;
        }

        /* 数据卡片 */
        .stat-card {
            background: #fff;
            border-radius: var(--radius-2xl);
            padding: 2rem 1.5rem;
            text-align: center;
            border: 1px solid #e8ecf1;
            transition: all 0.3s ease;
        }
        .stat-card:hover {
            box-shadow: 0 8px 28px rgba(0,0,0,0.08);
            transform: translateY(-2px);
        }
        .stat-number {
            font-family: 'Plus Jakarta Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            font-size: 2.75rem;
            font-weight: 900;
            color: #0f172a;
            letter-spacing: -0.03em;
        }
        @media (min-width: 768px) {
            .stat-number {
                font-size: 3.25rem;
            }
        }

        /* 响应式补充 */
        @media (max-width: 767px) {
            .hero-section {
                padding: 2.5rem 0 3rem;
            }
            .section-pad {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.45rem;
            }
            .stat-number {
                font-size: 2rem;
            }
            .card-base:hover {
                transform: none;
            }
        }
        @media (max-width: 520px) {
            .brand-row {
                padding-top: 0.6rem;
                padding-bottom: 0.6rem;
            }
            .logo-text {
                font-size: 1.25rem;
            }
            .logo-text .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 0.9rem;
                border-radius: 8px;
            }
            .btn-primary {
                padding: 0.65rem 1.3rem;
                font-size: 0.9rem;
            }
            .btn-outline {
                padding: 0.6rem 1.2rem;
                font-size: 0.85rem;
            }
        }

/* roulang page: article */
:root {
            --brand-500: #f2571e;
            --brand-600: #e34314;
            --brand-700: #bc3113;
            --accent-600: #0070c6;
            --text-primary: #1c1917;
            --text-secondary: #57534e;
            --text-muted: #a8a29e;
            --border-light: #e7e5e4;
            --surface: #fafaf9;
            --cardbg: #ffffff;
            --radius-lg: 0.875rem;
            --radius-xl: 1.125rem;
            --radius-2xl: 1.5rem;
            --shadow-soft: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.03);
            --shadow-card: 0 1px 2px rgba(0,0,0,0.04), 0 6px 20px rgba(0,0,0,0.04);
            --shadow-elevated: 0 2px 8px rgba(0,0,0,0.06), 0 12px 32px rgba(0,0,0,0.05);
        }
        *,*::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:'Inter','Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;line-height:1.7;color:var(--text-primary);background-color:var(--surface);font-size:16px}
        img{max-width:100%;height:auto;display:block}
        a{color:inherit;text-decoration:none;transition:color 0.2s ease}
        button,input,select,textarea{font-family:inherit;font-size:inherit}
        ::selection{background-color:#fde5d7;color:#bc3113}
        :focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px}

        .container-site{max-width:1200px;margin-left:auto;margin-right:auto;padding-left:1.25rem;padding-right:1.25rem}
        @media(min-width:640px){.container-site{padding-left:1.75rem;padding-right:1.75rem}}
        @media(min-width:1024px){.container-site{padding-left:2.5rem;padding-right:2.5rem}}

        .site-header{background:var(--cardbg);border-bottom:1px solid var(--border-light);position:sticky;top:0;z-index:50;box-shadow:var(--shadow-soft)}
        .brand-row{display:flex;align-items:center;justify-content:space-between;padding-top:0.75rem;padding-bottom:0.75rem;border-bottom:1px solid #f5f3f1}
        .brand-logo{font-family:'Lexend','Inter','Noto Sans SC',sans-serif;font-size:1.35rem;font-weight:700;color:var(--brand-600);letter-spacing:-0.02em;display:flex;align-items:center;gap:0.4rem}
        .brand-logo .logo-dot{width:9px;height:9px;border-radius:50%;background:var(--brand-500);display:inline-block;flex-shrink:0}
        .brand-logo:hover{color:var(--brand-700)}
        .brand-actions{display:flex;align-items:center;gap:0.75rem}
        .btn-header{display:inline-flex;align-items:center;gap:0.35rem;padding:0.45rem 1rem;border-radius:2rem;font-size:0.875rem;font-weight:600;transition:all 0.2s ease;white-space:nowrap}
        .btn-header-primary{background:var(--brand-500);color:#fff}
        .btn-header-primary:hover{background:var(--brand-600);box-shadow:var(--shadow-soft);transform:translateY(-1px)}
        .btn-header-ghost{color:var(--text-secondary);background:transparent}
        .btn-header-ghost:hover{color:var(--brand-600);background:#fef3ee}

        .channel-row{display:flex;align-items:center;gap:0.35rem;padding-top:0.5rem;padding-bottom:0.5rem;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
        .channel-row::-webkit-scrollbar{display:none}
        .channel-tag{display:inline-flex;align-items:center;gap:0.4rem;padding:0.45rem 0.9rem;border-radius:2rem;font-size:0.875rem;font-weight:500;color:var(--text-secondary);white-space:nowrap;transition:all 0.2s ease;flex-shrink:0;background:transparent}
        .channel-tag:hover{color:var(--brand-600);background:#fef3ee}
        .channel-tag.active{background:var(--brand-500);color:#fff;font-weight:600;box-shadow:0 2px 8px rgba(242,87,30,0.25)}
        .channel-tag .tag-dot{width:5px;height:5px;border-radius:50%;background:currentColor;flex-shrink:0;opacity:0.7}
        .channel-tag.active .tag-dot{opacity:1;background:#fff}

        @media(max-width:639px){
            .brand-logo{font-size:1.15rem}
            .btn-header{padding:0.38rem 0.75rem;font-size:0.8rem}
            .channel-tag{padding:0.38rem 0.7rem;font-size:0.8rem;gap:0.25rem}
            .channel-row{gap:0.2rem}
        }

        .site-footer{background:#1c1917;color:#d6d3d1;padding:2.5rem 1.25rem;margin-top:3rem}
        .footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:1.25rem 2rem;margin-bottom:1.5rem}
        .footer-links a{color:#a8a29e;font-size:0.9rem;transition:color 0.2s ease}
        .footer-links a:hover{color:#f57940}
        @media(min-width:640px){.site-footer{padding:3rem 2rem}}

        .article-container{max-width:820px;margin:0 auto;padding:2rem 1.25rem}
        @media(min-width:640px){.article-container{padding:2.5rem 1.75rem}}
        @media(min-width:1024px){.article-container{padding:3rem 2.5rem}}

        .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:0.4rem;font-size:0.85rem;color:var(--text-muted);margin-bottom:1.5rem}
        .breadcrumb a{color:var(--text-muted);transition:color 0.2s}
        .breadcrumb a:hover{color:var(--brand-600)}
        .breadcrumb .sep{color:#d6d3d1;user-select:none}

        .article-header{margin-bottom:2rem}
        .article-category-tag{display:inline-block;padding:0.3rem 0.85rem;border-radius:2rem;font-size:0.8rem;font-weight:600;background:#fef3ee;color:var(--brand-600);margin-bottom:0.75rem;letter-spacing:0.01em}
        .article-title{font-size:1.75rem;font-weight:800;line-height:1.35;color:#1c1917;margin-bottom:0.75rem;letter-spacing:-0.015em}
        @media(min-width:640px){.article-title{font-size:2.1rem}}
        @media(min-width:1024px){.article-title{font-size:2.4rem}}
        .article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:0.75rem 1.25rem;font-size:0.875rem;color:var(--text-muted)}
        .article-meta .meta-item{display:inline-flex;align-items:center;gap:0.3rem}

        .article-cover{margin-bottom:2rem;border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-elevated);background:#f5f3f1}
        .article-cover img{width:100%;height:auto;display:block;object-fit:cover;aspect-ratio:16/9}

        .article-body{font-size:1.05rem;line-height:1.85;color:#292524;letter-spacing:0.005em}
        .article-body h2{font-size:1.45rem;font-weight:700;color:#1c1917;margin-top:2.25rem;margin-bottom:0.75rem;letter-spacing:-0.01em}
        .article-body h3{font-size:1.2rem;font-weight:600;color:#1c1917;margin-top:1.75rem;margin-bottom:0.5rem}
        .article-body p{margin-bottom:1.1rem}
        .article-body ul,.article-body ol{margin-bottom:1.1rem;padding-left:1.5rem}
        .article-body li{margin-bottom:0.4rem}
        .article-body blockquote{border-left:3px solid var(--brand-400);padding:0.75rem 1.25rem;margin:1.5rem 0;background:#fefbf8;border-radius:0 0.5rem 0.5rem 0;color:#57534e;font-style:italic}
        .article-body img{border-radius:var(--radius-lg);margin:1.5rem 0;box-shadow:var(--shadow-card)}
        .article-body code{background:#f5f3f1;padding:0.15rem 0.45rem;border-radius:0.35rem;font-size:0.9em;color:#bc3113}
        .article-body pre{background:#1c1917;color:#e7e5e4;padding:1.25rem;border-radius:var(--radius-lg);overflow-x:auto;margin:1.5rem 0;font-size:0.9rem;line-height:1.6}
        .article-body pre code{background:transparent;color:inherit;padding:0}
        .article-body a{color:var(--accent-600);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
        .article-body a:hover{color:var(--brand-600)}

        .article-footer-section{margin-top:2.5rem;padding-top:1.5rem;border-top:1px solid var(--border-light)}
        .article-tags{display:flex;flex-wrap:wrap;gap:0.5rem;margin-bottom:1.5rem}
        .article-tag{display:inline-block;padding:0.25rem 0.75rem;border-radius:2rem;font-size:0.8rem;background:#f5f3f1;color:var(--text-secondary);transition:all 0.2s}
        .article-tag:hover{background:#fde5d7;color:var(--brand-600)}

        .related-section{margin-top:3rem}
        .related-section h3{font-size:1.2rem;font-weight:700;color:#1c1917;margin-bottom:1.25rem}
        .related-cards{display:grid;grid-template-columns:1fr;gap:1rem}
        @media(min-width:640px){.related-cards{grid-template-columns:repeat(2,1fr)}}
        .related-card{background:var(--cardbg);border-radius:var(--radius-lg);padding:1.25rem;box-shadow:var(--shadow-card);border:1px solid var(--border-light);transition:all 0.25s ease;display:block}
        .related-card:hover{box-shadow:var(--shadow-elevated);transform:translateY(-2px);border-color:#fbc7aa}
        .related-card .rc-cat{font-size:0.75rem;font-weight:600;color:var(--brand-500);margin-bottom:0.4rem;text-transform:uppercase;letter-spacing:0.03em}
        .related-card .rc-title{font-size:1rem;font-weight:700;color:#1c1917;line-height:1.4;transition:color 0.2s}
        .related-card:hover .rc-title{color:var(--brand-600)}
        .related-card .rc-date{font-size:0.8rem;color:var(--text-muted);margin-top:0.5rem}

        .not-found-state{text-align:center;padding:4rem 1.5rem}
        .not-found-state .nf-icon{font-size:3.5rem;margin-bottom:1rem;display:block}
        .not-found-state h2{font-size:1.5rem;font-weight:700;color:#1c1917;margin-bottom:0.5rem}
        .not-found-state p{color:var(--text-secondary);margin-bottom:1.5rem;font-size:1rem}
        .btn-back{display:inline-flex;align-items:center;gap:0.4rem;padding:0.65rem 1.5rem;border-radius:2rem;font-weight:600;font-size:0.95rem;background:var(--brand-500);color:#fff;transition:all 0.2s;box-shadow:0 2px 8px rgba(242,87,30,0.2)}
        .btn-back:hover{background:var(--brand-600);box-shadow:0 4px 14px rgba(242,87,30,0.3);transform:translateY(-1px)}

        .cta-strip{background:linear-gradient(135deg,#f2571e 0%,#e34314 50%,#bc3113 100%);color:#fff;text-align:center;padding:3rem 1.5rem;border-radius:var(--radius-2xl);margin:3rem auto 0;max-width:820px}
        .cta-strip h3{font-size:1.35rem;font-weight:700;margin-bottom:0.5rem}
        .cta-strip p{opacity:0.9;margin-bottom:1.25rem;font-size:0.95rem}
        .cta-strip .btn-cta{display:inline-block;padding:0.7rem 2rem;border-radius:2rem;font-weight:700;font-size:0.95rem;background:#fff;color:var(--brand-600);transition:all 0.2s;box-shadow:0 2px 10px rgba(0,0,0,0.15)}
        .cta-strip .btn-cta:hover{background:#fef3ee;box-shadow:0 4px 16px rgba(0,0,0,0.2);transform:translateY(-2px)}
        @media(max-width:639px){.cta-strip{padding:2rem 1.25rem;border-radius:var(--radius-xl)}.cta-strip h3{font-size:1.15rem}}

/* roulang page: category1 */
:root {
            --brand-600: #4c6ef5;
            --brand-700: #4263eb;
            --brand-800: #3b5bdb;
            --accent-500: #fa5252;
            --warm-500: #ff922b;
            --bg-page: #f8f9fb;
            --bg-white: #ffffff;
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --text-weak: #94a3b8;
            --border-light: #e8ecf1;
            --border-card: #edf0f5;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
            --shadow-xl: 0 16px 48px rgba(0,0,0,0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
        }

        *,*::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:'Inter','PingFang SC','Microsoft YaHei','Helvetica Neue',sans-serif;line-height:1.6;color:var(--text-primary);background:var(--bg-page);overflow-x:hidden}

        img{max-width:100%;height:auto;display:block}
        a{text-decoration:none;color:inherit;transition:color var(--transition-fast)}
        button{cursor:pointer;font-family:inherit;border:none;outline:none}
        input,textarea{font-family:inherit}

        /* ========== 杂志频道导航样式 ========== */
        .site-header{background:var(--bg-white);position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm)}
        .brand-row{display:flex;align-items:center;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--border-light)}
        .brand-logo{font-size:1.5rem;font-weight:800;letter-spacing:-0.02em;color:var(--brand-700);display:flex;align-items:center;gap:8px}
        .brand-logo .logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--brand-600),var(--brand-800));border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem;font-weight:700}
        .brand-actions{display:flex;align-items:center;gap:12px}
        .brand-actions .btn-subscribe{background:var(--brand-600);color:#fff;padding:8px 18px;border-radius:20px;font-size:0.875rem;font-weight:600;transition:all var(--transition-fast);white-space:nowrap}
        .brand-actions .btn-subscribe:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 4px 12px rgba(76,110,245,0.35)}

        .channel-row{display:flex;align-items:center;gap:4px;padding:10px 0;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
        .channel-row::-webkit-scrollbar{display:none}
        .channel-tag{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:22px;font-size:0.9rem;font-weight:500;color:var(--text-secondary);background:transparent;white-space:nowrap;transition:all var(--transition-fast);position:relative;flex-shrink:0}
        .channel-tag:hover{color:var(--text-primary);background:#f1f5f9}
        .channel-tag.active{color:#fff;background:var(--brand-600);font-weight:600;box-shadow:0 3px 12px rgba(76,110,245,0.3)}
        .channel-tag .tag-dot{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:0.5;transition:all var(--transition-fast)}
        .channel-tag.active .tag-dot{opacity:1;background:#fff}
        .channel-tag .tag-badge{font-size:0.7rem;background:var(--accent-500);color:#fff;padding:1px 7px;border-radius:10px;font-weight:600;margin-left:2px}

        /* 移动端导航 */
        @media (max-width:768px){
            .brand-row{padding:10px 0}
            .brand-logo{font-size:1.25rem}
            .brand-logo .logo-icon{width:30px;height:30px;font-size:0.9rem}
            .brand-actions .btn-subscribe{padding:6px 14px;font-size:0.8rem}
            .channel-tag{padding:6px 14px;font-size:0.82rem}
            .channel-row{padding:8px 0;gap:2px}
        }
        @media (max-width:520px){
            .brand-logo{font-size:1.1rem}
            .brand-logo .logo-icon{width:26px;height:26px;font-size:0.75rem}
            .brand-actions .btn-subscribe{padding:5px 12px;font-size:0.75rem}
            .channel-tag{padding:5px 12px;font-size:0.78rem;border-radius:18px}
        }

        /* ========== 容器 ========== */
        .container-site{max-width:1200px;margin:0 auto;padding:0 20px}
        @media (max-width:768px){.container-site{padding:0 16px}}
        @media (max-width:520px){.container-site{padding:0 12px}}

        /* ========== 分类Banner ========== */
        .category-banner{position:relative;background:linear-gradient(135deg,#1a1a2e 0%,#16213e 40%,#0f3460 100%);overflow:hidden;padding:60px 0;min-height:280px;display:flex;align-items:center}
        .category-banner .banner-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:0.25;mix-blend-mode:overlay}
        .category-banner .banner-overlay{position:absolute;inset:0;background:radial-gradient(ellipse at 30% 50%,rgba(76,110,245,0.2) 0%,transparent 70%)}
        .category-banner .banner-content{position:relative;z-index:2}
        .category-banner .category-label{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,0.12);backdrop-filter:blur(10px);padding:8px 20px;border-radius:24px;font-size:0.85rem;color:#e0e7ff;font-weight:500;margin-bottom:16px;border:1px solid rgba(255,255,255,0.15)}
        .category-banner .category-label .pulse-dot{width:8px;height:8px;border-radius:50%;background:#60fa8b;animation:pulse-dot 2s infinite}
        @keyframes pulse-dot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:0.4;transform:scale(1.6)}}
        .category-banner h1{font-size:2.6rem;font-weight:800;color:#fff;letter-spacing:-0.02em;line-height:1.2;margin-bottom:12px}
        .category-banner .banner-desc{font-size:1.1rem;color:#cbd5e1;max-width:600px;line-height:1.7}
        .category-banner .banner-stats{display:flex;gap:28px;margin-top:20px;flex-wrap:wrap}
        .category-banner .stat-item{display:flex;align-items:center;gap:8px;color:#e2e8f0;font-size:0.9rem}
        .category-banner .stat-item .stat-num{font-weight:700;font-size:1.3rem;color:#fff}
        @media (max-width:768px){
            .category-banner{padding:40px 0;min-height:220px}
            .category-banner h1{font-size:1.8rem}
            .category-banner .banner-desc{font-size:0.95rem}
            .category-banner .banner-stats{gap:16px}
            .category-banner .stat-item .stat-num{font-size:1.1rem}
        }
        @media (max-width:520px){
            .category-banner{padding:32px 0;min-height:180px}
            .category-banner h1{font-size:1.4rem}
            .category-banner .banner-desc{font-size:0.85rem}
            .category-banner .category-label{font-size:0.75rem;padding:6px 14px}
        }

        /* ========== 统计条 ========== */
        .stats-strip{background:var(--bg-white);border-bottom:1px solid var(--border-light);padding:20px 0}
        .stats-strip .stats-grid{display:flex;gap:32px;flex-wrap:wrap;align-items:center}
        .stats-strip .mini-stat{display:flex;align-items:center;gap:10px}
        .stats-strip .mini-stat .ms-icon{width:40px;height:40px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:1rem;flex-shrink:0}
        .stats-strip .mini-stat .ms-value{font-weight:700;font-size:1.15rem;color:var(--text-primary)}
        .stats-strip .mini-stat .ms-label{font-size:0.8rem;color:var(--text-weak)}
        @media (max-width:768px){
            .stats-strip .stats-grid{gap:18px}
            .stats-strip .mini-stat .ms-icon{width:34px;height:34px;font-size:0.85rem}
            .stats-strip .mini-stat .ms-value{font-size:1rem}
        }
        @media (max-width:520px){
            .stats-strip .stats-grid{gap:12px;justify-content:center}
            .stats-strip .mini-stat{gap:6px}
        }

        /* ========== 头条文章卡片 ========== */
        .featured-card{background:var(--bg-white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);display:grid;grid-template-columns:1fr 1fr;transition:all var(--transition-normal);border:1px solid var(--border-card)}
        .featured-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
        .featured-card .fc-image{position:relative;overflow:hidden;min-height:320px}
        .featured-card .fc-image img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
        .featured-card:hover .fc-image img{transform:scale(1.04)}
        .featured-card .fc-image .fc-badge{position:absolute;top:16px;left:16px;background:var(--accent-500);color:#fff;padding:5px 14px;border-radius:16px;font-size:0.8rem;font-weight:700;letter-spacing:0.04em;box-shadow:0 3px 10px rgba(250,82,82,0.4);animation:badge-glow 2.5s ease-in-out infinite}
        @keyframes badge-glow{0%,100%{box-shadow:0 3px 10px rgba(250,82,82,0.4)}50%{box-shadow:0 3px 20px rgba(250,82,82,0.7)}}
        .featured-card .fc-body{padding:32px;display:flex;flex-direction:column;justify-content:center}
        .featured-card .fc-meta{display:flex;align-items:center;gap:12px;margin-bottom:12px;flex-wrap:wrap}
        .featured-card .fc-tag{font-size:0.78rem;font-weight:600;color:var(--brand-600);background:#eef1ff;padding:4px 12px;border-radius:12px}
        .featured-card .fc-date{font-size:0.8rem;color:var(--text-weak)}
        .featured-card .fc-title{font-size:1.5rem;font-weight:700;color:var(--text-primary);line-height:1.35;margin-bottom:10px}
        .featured-card .fc-excerpt{font-size:0.95rem;color:var(--text-secondary);line-height:1.65;margin-bottom:18px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
        .featured-card .fc-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-weight:600;font-size:0.9rem;transition:gap var(--transition-fast)}
        .featured-card .fc-link:hover{gap:12px;color:var(--brand-700)}
        .featured-card .fc-link i{font-size:0.75rem;transition:transform var(--transition-fast)}
        .featured-card .fc-link:hover i{transform:translateX(4px)}
        @media (max-width:768px){
            .featured-card{grid-template-columns:1fr}
            .featured-card .fc-image{min-height:200px;max-height:260px}
            .featured-card .fc-body{padding:20px}
            .featured-card .fc-title{font-size:1.2rem}
        }
        @media (max-width:520px){
            .featured-card .fc-image{min-height:160px;max-height:200px}
            .featured-card .fc-body{padding:16px}
            .featured-card .fc-title{font-size:1.05rem}
            .featured-card .fc-excerpt{font-size:0.85rem}
        }

        /* ========== 文章列表卡片 ========== */
        .article-card{background:var(--bg-white);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--border-card);transition:all var(--transition-normal);display:flex;flex-direction:column;height:100%}
        .article-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:#dde3f0}
        .article-card .ac-image{position:relative;overflow:hidden;aspect-ratio:16/10;background:#f1f5f9}
        .article-card .ac-image img{width:100%;height:100%;object-fit:cover;transition:transform 0.45s ease}
        .article-card:hover .ac-image img{transform:scale(1.05)}
        .article-card .ac-image .ac-badge{position:absolute;top:10px;right:10px;font-size:0.7rem;font-weight:700;padding:3px 10px;border-radius:12px;letter-spacing:0.03em}
        .badge-hot{background:#fff0f0;color:var(--accent-500)}
        .badge-new{background:#e8f5e9;color:#2e7d32}
        .badge-recommend{background:#fff8e1;color:#f57f17}
        .badge-cert{background:#e8eaf6;color:#283593}
        .badge-beta{background:#fce4ec;color:#c62828}
        .badge-opt{background:#e0f7fa;color:#00695c}
        .article-card .ac-body{padding:20px;flex:1;display:flex;flex-direction:column}
        .article-card .ac-meta{display:flex;align-items:center;gap:10px;margin-bottom:8px;flex-wrap:wrap}
        .article-card .ac-tag{font-size:0.72rem;font-weight:600;color:var(--brand-600);background:#eef1ff;padding:3px 10px;border-radius:10px}
        .article-card .ac-date{font-size:0.75rem;color:var(--text-weak)}
        .article-card .ac-title{font-size:1.05rem;font-weight:700;color:var(--text-primary);line-height:1.4;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
        .article-card .ac-excerpt{font-size:0.85rem;color:var(--text-secondary);line-height:1.55;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:12px}
        .article-card .ac-footer{display:flex;align-items:center;justify-content:space-between;padding-top:12px;border-top:1px solid var(--border-light);font-size:0.78rem;color:var(--text-weak)}
        .article-card .ac-stats{display:flex;align-items:center;gap:12px}
        .article-card .ac-stats span{display:flex;align-items:center;gap:3px}
        .article-card .ac-readmore{color:var(--brand-600);font-weight:600;font-size:0.82rem;display:flex;align-items:center;gap:4px;transition:gap var(--transition-fast)}
        .article-card .ac-readmore:hover{gap:8px}
        @media (max-width:520px){
            .article-card .ac-body{padding:14px}
            .article-card .ac-title{font-size:0.95rem}
            .article-card .ac-excerpt{font-size:0.8rem}
        }

        /* ========== 分页 ========== */
        .pagination-row{display:flex;align-items:center;justify-content:center;gap:6px;flex-wrap:wrap}
        .page-btn{width:38px;height:38px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:0.85rem;font-weight:500;color:var(--text-secondary);background:var(--bg-white);border:1px solid var(--border-light);transition:all var(--transition-fast)}
        .page-btn:hover{background:#f1f5f9;color:var(--text-primary)}
        .page-btn.active{background:var(--brand-600);color:#fff;border-color:var(--brand-600);font-weight:700;box-shadow:0 2px 8px rgba(76,110,245,0.3)}
        .page-btn:disabled{opacity:0.4;cursor:not-allowed;pointer-events:none}
        @media (max-width:520px){
            .page-btn{width:32px;height:32px;font-size:0.8rem}
        }

        /* ========== 标签云 ========== */
        .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
        .cloud-tag{padding:7px 16px;border-radius:20px;font-size:0.82rem;font-weight:500;background:var(--bg-white);color:var(--text-secondary);border:1px solid var(--border-light);transition:all var(--transition-fast);cursor:pointer}
        .cloud-tag:hover{background:var(--brand-50);color:var(--brand-600);border-color:var(--brand-300)}
        .cloud-tag.hot{background:#fff5f5;color:var(--accent-500);border-color:#fecaca;font-weight:600}
        @media (max-width:520px){
            .cloud-tag{padding:5px 12px;font-size:0.75rem}
        }

        /* ========== CTA板块 ========== */
        .cta-block{background:linear-gradient(135deg,#1e3a5f 0%,#1a2744 50%,#0f1b33 100%);border-radius:var(--radius-xl);padding:48px 40px;position:relative;overflow:hidden}
        .cta-block .cta-bg-pattern{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.png');background-size:cover;background-position:center;opacity:0.15;mix-blend-mode:soft-light}
        .cta-block .cta-content{position:relative;z-index:2;text-align:center}
        .cta-block .cta-icon{width:56px;height:56px;margin:0 auto 16px;background:rgba(255,255,255,0.12);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.4rem;color:#fff;backdrop-filter:blur(4px)}
        .cta-block h3{font-size:1.6rem;font-weight:700;color:#fff;margin-bottom:8px}
        .cta-block .cta-desc{font-size:0.95rem;color:#cbd5e1;margin-bottom:24px;max-width:480px;margin-left:auto;margin-right:auto}
        .cta-block .cta-form{display:flex;gap:10px;max-width:420px;margin:0 auto;flex-wrap:wrap;justify-content:center}
        .cta-block .cta-input{flex:1;min-width:200px;padding:12px 18px;border-radius:24px;border:2px solid rgba(255,255,255,0.2);background:rgba(255,255,255,0.08);color:#fff;font-size:0.9rem;outline:none;transition:all var(--transition-fast);backdrop-filter:blur(4px)}
        .cta-block .cta-input::placeholder{color:rgba(255,255,255,0.45)}
        .cta-block .cta-input:focus{border-color:rgba(255,255,255,0.5);background:rgba(255,255,255,0.14)}
        .cta-block .cta-submit{padding:12px 28px;border-radius:24px;background:#fff;color:var(--brand-700);font-weight:700;font-size:0.9rem;transition:all var(--transition-fast);white-space:nowrap}
        .cta-block .cta-submit:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(255,255,255,0.25)}
        @media (max-width:768px){
            .cta-block{padding:36px 24px;border-radius:var(--radius-lg)}
            .cta-block h3{font-size:1.3rem}
            .cta-block .cta-desc{font-size:0.85rem}
            .cta-block .cta-form{flex-direction:column;align-items:center}
            .cta-block .cta-input{width:100%;max-width:340px}
        }
        @media (max-width:520px){
            .cta-block{padding:28px 16px;border-radius:var(--radius-md)}
            .cta-block h3{font-size:1.15rem}
        }

        /* ========== 页脚 ========== */
        .site-footer{background:#1a1f2e;padding:36px 0;margin-top:60px}
        .site-footer .footer-links{display:flex;align-items:center;justify-content:center;gap:20px;flex-wrap:wrap;margin-bottom:14px}
        .site-footer .footer-links a{color:#cbd5e1;font-size:0.88rem;transition:color var(--transition-fast)}
        .site-footer .footer-links a:hover{color:#fff}
        .site-footer .footer-links a.active-footer{color:#fff;font-weight:600}
        @media (max-width:520px){
            .site-footer{padding:24px 0;margin-top:40px}
            .site-footer .footer-links{gap:12px}
            .site-footer .footer-links a{font-size:0.78rem}
        }

        /* ========== 区块间距 ========== */
        .section-gap{padding:48px 0}
        @media (max-width:768px){.section-gap{padding:32px 0}}
        @media (max-width:520px){.section-gap{padding:24px 0}}

/* roulang page: category2 */
:root {
            --brand-600: #4c6ef5;
            --brand-700: #4263eb;
            --brand-800: #3b5bdb;
            --accent-500: #f06595;
            --surface: #f8f9fc;
            --card: #ffffff;
            --ink: #1a1b2e;
            --muted: #6b7280;
            --border: #e5e7eb;
            --radius-xl: 0.875rem;
            --radius-2xl: 1.125rem;
            --radius-3xl: 1.5rem;
            --shadow-card: 0 4px 16px 0 rgba(0,0,0,0.06), 0 2px 6px 0 rgba(0,0,0,0.04);
            --shadow-card-hover: 0 12px 32px 0 rgba(0,0,0,0.10), 0 4px 12px 0 rgba(0,0,0,0.06);
            --transition-smooth: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            margin: 0;
            padding: 0;
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            line-height: 1.6;
            color: var(--ink);
            background-color: var(--surface);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
        }

        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px 0 rgba(0,0,0,0.03);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.875rem 0;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .brand-logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--ink);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .brand-logo .logo-icon {
            width: 2.25rem;
            height: 2.25rem;
            background: linear-gradient(135deg, var(--brand-600), var(--brand-800));
            border-radius: 0.625rem;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 900;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .brand-logo:hover {
            color: var(--brand-700);
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .btn-outline-sm {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            padding: 0.5rem 1rem;
            font-size: 0.875rem;
            font-weight: 600;
            border-radius: 9999px;
            border: 2px solid var(--brand-600);
            color: var(--brand-600);
            background: transparent;
            cursor: pointer;
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .btn-outline-sm:hover {
            background: var(--brand-600);
            color: #fff;
            box-shadow: var(--shadow-card-hover);
        }
        .btn-solid-sm {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            padding: 0.5rem 1.125rem;
            font-size: 0.875rem;
            font-weight: 600;
            border-radius: 9999px;
            border: 2px solid var(--brand-600);
            background: var(--brand-600);
            color: #fff;
            cursor: pointer;
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .btn-solid-sm:hover {
            background: var(--brand-700);
            border-color: var(--brand-700);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-1px);
        }

        /* Channel Row */
        .channel-row {
            display: flex;
            flex-wrap: wrap;
            gap: 0.375rem;
            padding: 0.5rem 0 0.75rem;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .channel-row::-webkit-scrollbar {
            display: none;
        }
        .channel-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            padding: 0.5rem 1.125rem;
            font-size: 0.9rem;
            font-weight: 600;
            border-radius: 9999px;
            background: #f1f3f8;
            color: #4b5563;
            cursor: pointer;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            border: 2px solid transparent;
        }
        .channel-tag:hover {
            background: #e5e7f0;
            color: #1f2937;
        }
        .channel-tag.active {
            background: var(--brand-600);
            color: #fff;
            border-color: var(--brand-600);
            box-shadow: 0 2px 8px 0 rgba(76,110,245,0.3);
        }
        .channel-tag .tag-dot {
            width: 0.4rem;
            height: 0.4rem;
            border-radius: 50%;
            background: currentColor;
            flex-shrink: 0;
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }
        .channel-tag.active .tag-dot {
            opacity: 1;
            background: #fff;
        }

        /* ========== CONTAINER ========== */
        .container-site {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        @media (min-width: 768px) {
            .container-site {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        @media (min-width: 1024px) {
            .container-site {
                padding-left: 2.5rem;
                padding-right: 2.5rem;
            }
        }

        /* ========== SECTIONS ========== */
        .section-gap {
            padding-top: 3.5rem;
            padding-bottom: 3.5rem;
        }
        @media (min-width: 768px) {
            .section-gap {
                padding-top: 5rem;
                padding-bottom: 5rem;
            }
        }

        .section-title {
            font-size: 1.625rem;
            font-weight: 800;
            letter-spacing: -0.015em;
            color: var(--ink);
            margin-bottom: 0.5rem;
            line-height: 1.25;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 2rem;
            }
        }
        .section-subtitle {
            font-size: 0.95rem;
            color: var(--muted);
            line-height: 1.6;
            max-width: 600px;
        }

        /* ========== CATEGORY BANNER ========== */
        .category-banner {
            position: relative;
            background: linear-gradient(160deg, #eef2ff 0%, #f0f4ff 30%, #fdf2f8 70%, #fff5f9 100%);
            padding-top: 3rem;
            padding-bottom: 3rem;
            overflow: hidden;
        }
        @media (min-width: 768px) {
            .category-banner {
                padding-top: 4.5rem;
                padding-bottom: 4.5rem;
            }
        }
        .category-banner::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 380px;
            height: 380px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(76,110,245,0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        .category-banner::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(240,101,149,0.10) 0%, transparent 70%);
            pointer-events: none;
        }
        .category-banner-content {
            position: relative;
            z-index: 1;
        }
        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            padding: 0.375rem 0.875rem;
            font-size: 0.8rem;
            font-weight: 700;
            border-radius: 9999px;
            background: #fff;
            color: var(--brand-700);
            border: 1.5px solid rgba(76,110,245,0.2);
            margin-bottom: 1rem;
        }
        .category-banner h1 {
            font-size: 2rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.2;
            color: var(--ink);
            margin: 0 0 0.75rem;
        }
        @media (min-width: 768px) {
            .category-banner h1 {
                font-size: 2.75rem;
            }
        }
        .category-banner .banner-desc {
            font-size: 1rem;
            color: var(--muted);
            line-height: 1.7;
            max-width: 580px;
        }

        /* ========== TUTORIAL CARD ========== */
        .tutorial-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }
        @media (min-width: 640px) {
            .tutorial-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .tutorial-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 1.75rem;
            }
        }
        .tutorial-card {
            background: var(--card);
            border-radius: var(--radius-2xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            cursor: pointer;
            display: flex;
            flex-direction: column;
            border: 1px solid transparent;
            height: 100%;
        }
        .tutorial-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(76,110,245,0.12);
        }
        .tutorial-card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #f1f5f9;
        }
        .tutorial-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .tutorial-card:hover .tutorial-card-img img {
            transform: scale(1.05);
        }
        .tutorial-level-tag {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            padding: 0.25rem 0.75rem;
            font-size: 0.75rem;
            font-weight: 700;
            border-radius: 9999px;
            background: rgba(255,255,255,0.94);
            color: var(--brand-700);
            backdrop-filter: blur(4px);
            z-index: 2;
        }
        .tutorial-level-tag.beginner {
            color: #10b981;
        }
        .tutorial-level-tag.intermediate {
            color: #f59e0b;
        }
        .tutorial-level-tag.advanced {
            color: #ef4444;
        }
        .tutorial-card-body {
            padding: 1.125rem 1.25rem 1.25rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .tutorial-card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.4;
            margin: 0 0 0.5rem;
            color: var(--ink);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .tutorial-card-body .tutorial-excerpt {
            font-size: 0.85rem;
            color: var(--muted);
            line-height: 1.55;
            margin: 0 0 0.75rem;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .tutorial-meta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.78rem;
            color: #9ca3af;
            padding-top: 0.625rem;
            border-top: 1px solid #f3f4f6;
        }
        .tutorial-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
        }

        /* ========== FEATURED TUTORIAL ========== */
        .featured-tutorial-card {
            background: var(--card);
            border-radius: var(--radius-3xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            border: 1px solid rgba(76,110,245,0.08);
            transition: all var(--transition-smooth);
        }
        @media (min-width: 768px) {
            .featured-tutorial-card {
                flex-direction: row;
            }
        }
        .featured-tutorial-card:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .featured-tutorial-img {
            flex: 0 0 auto;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #f1f5f9;
        }
        @media (min-width: 768px) {
            .featured-tutorial-img {
                width: 320px;
                aspect-ratio: auto;
                min-height: 220px;
            }
        }
        .featured-tutorial-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .featured-tutorial-card:hover .featured-tutorial-img img {
            transform: scale(1.04);
        }
        .featured-tutorial-body {
            padding: 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        @media (min-width: 768px) {
            .featured-tutorial-body {
                padding: 1.75rem 2rem;
            }
        }
        .featured-tutorial-body h3 {
            font-size: 1.25rem;
            font-weight: 800;
            margin: 0 0 0.5rem;
            color: var(--ink);
        }
        .featured-tutorial-body p {
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.6;
            margin: 0 0 1rem;
        }

        /* ========== STEP FLOW ========== */
        .step-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }
        @media (min-width: 640px) {
            .step-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .step-list {
                grid-template-columns: repeat(4, 1fr);
                gap: 1.5rem;
            }
        }
        .step-item {
            text-align: center;
            padding: 1.5rem 1.125rem;
            background: var(--card);
            border-radius: var(--radius-2xl);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            position: relative;
        }
        .step-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 3rem;
            height: 3rem;
            border-radius: 50%;
            font-size: 1.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--brand-600), var(--brand-800));
            color: #fff;
            margin-bottom: 0.875rem;
            box-shadow: 0 4px 14px 0 rgba(76,110,245,0.3);
        }
        .step-item h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin: 0 0 0.375rem;
            color: var(--ink);
        }
        .step-item p {
            font-size: 0.82rem;
            color: var(--muted);
            margin: 0;
            line-height: 1.5;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card);
            border-radius: var(--radius-xl);
            padding: 1.125rem 1.375rem;
            box-shadow: var(--shadow-card);
            border: 1px solid transparent;
            cursor: pointer;
            transition: all var(--transition-smooth);
        }
        .faq-item:hover {
            border-color: rgba(76,110,245,0.15);
            box-shadow: var(--shadow-card-hover);
        }
        .faq-item summary {
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--ink);
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.75rem;
            cursor: pointer;
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--brand-600);
            flex-shrink: 0;
            transition: transform var(--transition-smooth);
        }
        .faq-item[open] summary::after {
            content: '−';
            transform: rotate(0deg);
        }
        .faq-item .faq-answer {
            margin-top: 0.75rem;
            font-size: 0.88rem;
            color: var(--muted);
            line-height: 1.65;
            padding-top: 0.75rem;
            border-top: 1px solid #f3f4f6;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(150deg, #4c6ef5 0%, #4263eb 40%, #364fc7 100%);
            border-radius: var(--radius-3xl);
            padding: 2.5rem 1.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        @media (min-width: 768px) {
            .cta-section {
                padding: 3.5rem 2rem;
            }
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -30px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 1.75rem;
            font-weight: 900;
            color: #fff;
            margin: 0 0 0.75rem;
            position: relative;
            z-index: 1;
        }
        @media (min-width: 768px) {
            .cta-section h2 {
                font-size: 2.25rem;
            }
        }
        .cta-section p {
            font-size: 1rem;
            color: rgba(255,255,255,0.85);
            margin: 0 0 1.5rem;
            position: relative;
            z-index: 1;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta-white {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.875rem 2rem;
            font-size: 1rem;
            font-weight: 700;
            border-radius: 9999px;
            background: #fff;
            color: var(--brand-700);
            border: none;
            cursor: pointer;
            transition: all var(--transition-smooth);
            position: relative;
            z-index: 1;
            box-shadow: 0 6px 24px 0 rgba(0,0,0,0.15);
        }
        .btn-cta-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 32px 0 rgba(0,0,0,0.22);
            background: #fefefe;
        }

        /* ========== FILTER BAR ========== */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            align-items: center;
            justify-content: center;
            padding: 0.5rem 0;
        }
        .filter-chip {
            padding: 0.45rem 1rem;
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: 9999px;
            border: 2px solid var(--border);
            background: #fff;
            color: #4b5563;
            cursor: pointer;
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .filter-chip:hover {
            border-color: var(--brand-400);
            color: var(--brand-600);
        }
        .filter-chip.active-filter {
            background: var(--brand-600);
            color: #fff;
            border-color: var(--brand-600);
            box-shadow: 0 2px 8px 0 rgba(76,110,245,0.3);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1a1b2e;
            color: #cbd5e1;
            padding: 2.5rem 1.25rem;
            margin-top: 0;
        }
        @media (min-width: 768px) {
            .site-footer {
                padding: 3rem 2rem;
            }
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1.25rem;
            justify-content: center;
            margin-bottom: 1.25rem;
        }
        .footer-links a {
            color: #cbd5e1;
            font-size: 0.9rem;
            font-weight: 500;
            transition: color var(--transition-smooth);
        }
        .footer-links a:hover {
            color: #fff;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 767px) {
            .brand-logo {
                font-size: 1.25rem;
            }
            .brand-logo .logo-icon {
                width: 1.875rem;
                height: 1.875rem;
                font-size: 0.9rem;
            }
            .brand-actions {
                gap: 0.5rem;
            }
            .btn-outline-sm, .btn-solid-sm {
                font-size: 0.78rem;
                padding: 0.4rem 0.75rem;
            }
            .channel-tag {
                font-size: 0.8rem;
                padding: 0.4rem 0.875rem;
            }
            .category-banner h1 {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.375rem;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .tutorial-card-body h3 {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .tutorial-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .step-list {
                grid-template-columns: 1fr;
                gap: 0.875rem;
            }
            .filter-bar {
                gap: 0.375rem;
            }
            .filter-chip {
                font-size: 0.78rem;
                padding: 0.35rem 0.75rem;
            }
            .category-banner {
                padding-top: 2rem;
                padding-bottom: 2rem;
            }
            .category-banner h1 {
                font-size: 1.4rem;
            }
            .featured-tutorial-body {
                padding: 1rem 1.125rem;
            }
            .featured-tutorial-body h3 {
                font-size: 1.1rem;
            }
        }

/* roulang page: category3 */
/* ===== 设计变量补充 & 基础重置 ===== */
        :root {
            --brand-600: #4c6ef5;
            --brand-700: #4263eb;
            --brand-800: #3b5bdb;
            --accent-500: #ff9f1c;
            --accent-600: #f08c00;
            --ink-primary: #1a1b2e;
            --ink-secondary: #495057;
            --ink-muted: #868e96;
            --surface-card: #ffffff;
            --surface-light: #f8f9fb;
            --surface-muted: #f1f3f5;
            --border-light: #e9ecef;
            --border-default: #dee2e6;
            --radius-xl: 0.875rem;
            --radius-2xl: 1.125rem;
            --radius-3xl: 1.5rem;
            --shadow-card: 0 1px 3px rgba(0,0,0,0.04), 0 6px 20px rgba(0,0,0,0.06);
            --shadow-card-hover: 0 4px 12px rgba(0,0,0,0.08), 0 12px 32px rgba(0,0,0,0.1);
            --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            font-size: 16px;
            line-height: 1.65;
            color: var(--ink-primary);
            background-color: var(--surface-light);
            min-height: 100vh;
        }

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

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

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

        input {
            font-family: inherit;
        }

        :focus-visible {
            outline: 2px solid var(--brand-600);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== 容器 ===== */
        .container-site {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 768px) {
            .container-site {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        @media (min-width: 1024px) {
            .container-site {
                padding-left: 2.5rem;
                padding-right: 2.5rem;
            }
        }

        /* ===== 导航：杂志频道风格 ===== */
        .site-header {
            background: #ffffff;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-card);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 0.875rem;
            padding-bottom: 0.75rem;
            border-bottom: 1px solid var(--border-light);
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 800;
            font-size: 1.5rem;
            letter-spacing: -0.02em;
            color: var(--ink-primary);
            transition: color var(--transition-fast);
            white-space: nowrap;
        }

        .brand-logo:hover {
            color: var(--brand-600);
        }

        .brand-logo .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 2.25rem;
            height: 2.25rem;
            background: linear-gradient(135deg, var(--brand-600), var(--brand-800));
            color: #fff;
            border-radius: 0.625rem;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .btn-subscribe-top {
            display: none;
            align-items: center;
            gap: 0.375rem;
            padding: 0.5rem 1.125rem;
            background: var(--brand-600);
            color: #fff;
            font-size: 0.875rem;
            font-weight: 600;
            border-radius: 9999px;
            border: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-subscribe-top:hover {
            background: var(--brand-700);
            box-shadow: var(--shadow-button-hover);
            transform: translateY(-1px);
        }

        @media (min-width: 640px) {
            .btn-subscribe-top {
                display: inline-flex;
            }
        }

        /* 频道行 */
        .channel-row {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            padding-top: 0.5rem;
            padding-bottom: 0.5rem;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            flex-wrap: nowrap;
        }

        .channel-row::-webkit-scrollbar {
            display: none;
        }

        .channel-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            padding: 0.5rem 1rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--ink-secondary);
            border-radius: 9999px;
            white-space: nowrap;
            transition: all var(--transition-fast);
            flex-shrink: 0;
            border: 1.5px solid transparent;
            background: transparent;
            position: relative;
        }

        .channel-tag:hover {
            color: var(--brand-600);
            background: #f0f4ff;
        }

        .channel-tag.active {
            color: var(--brand-700);
            background: #eef1ff;
            font-weight: 600;
            border-color: rgba(76,110,245,0.25);
        }

        .tag-dot {
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--brand-600);
            opacity: 0;
            transform: scale(0);
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .channel-tag.active .tag-dot {
            opacity: 1;
            transform: scale(1);
            background: var(--brand-600);
        }

        /* ===== 分类 Hero ===== */
        .category-hero {
            position: relative;
            padding: 3.5rem 0 3rem;
            background: linear-gradient(160deg, #1a1b2e 0%, #2d3a5c 40%, #3b4f7a 100%);
            overflow: hidden;
            color: #ffffff;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255,159,28,0.12) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
            pointer-events: none;
        }

        .category-hero-content {
            position: relative;
            z-index: 1;
            max-width: 720px;
        }

        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            padding: 0.35rem 0.9rem;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: 9999px;
            font-size: 0.8rem;
            font-weight: 500;
            color: rgba(255,255,255,0.9);
            margin-bottom: 1.25rem;
            animation: fadeUp 0.6s ease-out both;
        }

        .category-hero h1 {
            font-size: clamp(1.75rem, 4vw, 2.75rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin: 0 0 1rem;
            color: #ffffff;
            animation: fadeUp 0.6s ease-out 0.1s both;
        }

        .category-hero .hero-desc {
            font-size: 1.05rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.8);
            margin: 0 0 1.5rem;
            animation: fadeUp 0.6s ease-out 0.2s both;
        }

        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            animation: fadeUp 0.6s ease-out 0.3s both;
        }

        .hero-stat-item {
            display: flex;
            flex-direction: column;
            gap: 0.15rem;
        }

        .hero-stat-num {
            font-size: 1.75rem;
            font-weight: 800;
            color: #ff9f1c;
            letter-spacing: -0.01em;
        }

        .hero-stat-label {
            font-size: 0.8rem;
            color: rgba(255,255,255,0.65);
        }

        @media (max-width: 640px) {
            .category-hero {
                padding: 2.5rem 0 2rem;
            }
            .hero-stats-row {
                gap: 1.25rem;
            }
            .hero-stat-num {
                font-size: 1.35rem;
            }
        }

        /* ===== 主内容区：两栏布局 ===== */
        .main-layout {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            padding: 2.5rem 0;
        }

        @media (min-width: 1024px) {
            .main-layout {
                grid-template-columns: 1fr 340px;
                gap: 2.5rem;
            }
        }

        @media (min-width: 1200px) {
            .main-layout {
                grid-template-columns: 1fr 380px;
                gap: 3rem;
            }
        }

        /* ===== 文章列表卡片 ===== */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }

        .article-card {
            display: grid;
            grid-template-columns: 1fr;
            background: var(--surface-card);
            border-radius: var(--radius-2xl);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition-smooth);
            border: 1px solid var(--border-light);
        }

        .article-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: #d0d5f0;
        }

        @media (min-width: 640px) {
            .article-card {
                grid-template-columns: 240px 1fr;
            }
        }

        @media (min-width: 768px) {
            .article-card {
                grid-template-columns: 280px 1fr;
            }
        }

        .article-card-img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #e9ecef;
            flex-shrink: 0;
        }

        @media (min-width: 640px) {
            .article-card-img {
                aspect-ratio: auto;
                min-height: 100%;
            }
        }

        .article-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        .article-card-body {
            padding: 1.25rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 0.6rem;
        }

        @media (min-width: 640px) {
            .article-card-body {
                padding: 1.5rem 1.5rem 1.5rem 1.25rem;
            }
        }

        .article-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
        }

        .article-tag {
            display: inline-block;
            padding: 0.2rem 0.65rem;
            font-size: 0.72rem;
            font-weight: 600;
            border-radius: 9999px;
            background: #f0f4ff;
            color: var(--brand-600);
            letter-spacing: 0.01em;
        }

        .article-tag.accent {
            background: #fff9f0;
            color: var(--accent-600);
        }

        .article-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            line-height: 1.4;
            color: var(--ink-primary);
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .article-card:hover .article-card-title {
            color: var(--brand-600);
        }

        .article-card-excerpt {
            font-size: 0.875rem;
            line-height: 1.6;
            color: var(--ink-muted);
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.78rem;
            color: var(--ink-light);
            flex-wrap: wrap;
        }

        .article-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
        }

        /* ===== 侧边栏 ===== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }

        .sidebar-card {
            background: var(--surface-card);
            border-radius: var(--radius-2xl);
            padding: 1.5rem;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
        }

        .sidebar-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--ink-primary);
            margin: 0 0 1rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--border-light);
            letter-spacing: -0.01em;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .tag-cloud-item {
            display: inline-block;
            padding: 0.4rem 0.85rem;
            font-size: 0.8rem;
            font-weight: 500;
            border-radius: 9999px;
            background: var(--surface-muted);
            color: var(--ink-secondary);
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            cursor: pointer;
        }

        .tag-cloud-item:hover {
            background: #eef1ff;
            color: var(--brand-600);
            border-color: rgba(76,110,245,0.2);
        }

        .tag-cloud-item.hot {
            background: #fff9f0;
            color: var(--accent-600);
            font-weight: 600;
            border-color: rgba(255,159,28,0.2);
        }

        .sidebar-article-mini {
            display: flex;
            gap: 0.75rem;
            padding: 0.65rem 0;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .sidebar-article-mini:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .sidebar-article-mini:first-child {
            padding-top: 0;
        }

        .sidebar-article-mini:hover {
            opacity: 0.8;
        }

        .sidebar-mini-img {
            width: 64px;
            height: 48px;
            border-radius: 0.5rem;
            object-fit: cover;
            flex-shrink: 0;
            background: #e9ecef;
        }

        .sidebar-mini-info {
            display: flex;
            flex-direction: column;
            gap: 0.2rem;
            min-width: 0;
        }

        .sidebar-mini-title {
            font-size: 0.82rem;
            font-weight: 600;
            line-height: 1.35;
            color: var(--ink-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .sidebar-mini-date {
            font-size: 0.7rem;
            color: var(--ink-light);
        }

        /* ===== 分页 ===== */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.35rem;
            padding-top: 1rem;
            flex-wrap: wrap;
        }

        .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 2.5rem;
            height: 2.5rem;
            padding: 0 0.75rem;
            font-size: 0.875rem;
            font-weight: 500;
            border-radius: 9999px;
            border: 1.5px solid var(--border-default);
            background: #fff;
            color: var(--ink-secondary);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .page-btn:hover {
            border-color: var(--brand-400);
            color: var(--brand-600);
            background: #f8f9ff;
        }

        .page-btn.active {
            background: var(--brand-600);
            color: #fff;
            border-color: var(--brand-600);
            font-weight: 600;
            pointer-events: none;
        }

        .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* ===== 数据统计板块 ===== */
        .stats-section {
            padding: 3rem 0;
            background: #ffffff;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }

        @media (min-width: 640px) {
            .stats-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 2rem;
            }
        }

        .stat-card {
            text-align: center;
            padding: 1.5rem 1rem;
            background: var(--surface-light);
            border-radius: var(--radius-2xl);
            border: 1px solid var(--border-light);
            transition: all var(--transition-smooth);
        }

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

        .stat-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 3rem;
            height: 3rem;
            border-radius: 50%;
            background: linear-gradient(135deg, #eef1ff, #dbe4ff);
            color: var(--brand-600);
            font-size: 1.3rem;
            margin-bottom: 0.75rem;
        }

        .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--ink-primary);
            letter-spacing: -0.02em;
            line-height: 1;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--ink-muted);
            margin-top: 0.35rem;
        }

        /* ===== CTA 板块 ===== */
        .cta-section {
            padding: 3.5rem 0;
            background: linear-gradient(150deg, #1a1b2e 0%, #2d3058 50%, #1e2040 100%);
            position: relative;
            overflow: hidden;
            color: #ffffff;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -30%;
            left: -15%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(76,110,245,0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255,159,28,0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 600px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 800;
            margin: 0 0 0.75rem;
            letter-spacing: -0.01em;
        }

        .cta-inner p {
            font-size: 1rem;
            color: rgba(255,255,255,0.75);
            margin: 0 0 1.75rem;
            line-height: 1.7;
        }

        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            max-width: 440px;
            margin: 0 auto;
        }

        @media (min-width: 520px) {
            .cta-form {
                flex-direction: row;
            }
        }

        .cta-input {
            flex: 1;
            padding: 0.8rem 1.25rem;
            border-radius: 9999px;
            border: 2px solid rgba(255,255,255,0.25);
            background: rgba(255,255,255,0.1);
            color: #fff;
            font-size: 0.95rem;
            backdrop-filter: blur(4px);
            transition: all var(--transition-fast);
        }

        .cta-input::placeholder {
            color: rgba(255,255,255,0.5);
        }

        .cta-input:focus {
            outline: none;
            border-color: rgba(255,255,255,0.6);
            background: rgba(255,255,255,0.18);
        }

        .cta-btn {
            padding: 0.8rem 2rem;
            border-radius: 9999px;
            border: none;
            background: #ff9f1c;
            color: #1a1b2e;
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .cta-btn:hover {
            background: #ffb84d;
            box-shadow: 0 6px 24px rgba(255,159,28,0.4);
            transform: translateY(-1px);
        }

        /* ===== FAQ 板块 ===== */
        .faq-section {
            padding: 3.5rem 0;
            background: #ffffff;
        }

        .section-header {
            text-align: center;
            margin-bottom: 2.5rem;
        }

        .section-header h2 {
            font-size: clamp(1.4rem, 3vw, 1.85rem);
            font-weight: 800;
            color: var(--ink-primary);
            margin: 0 0 0.5rem;
            letter-spacing: -0.01em;
        }

        .section-header p {
            font-size: 0.95rem;
            color: var(--ink-muted);
            margin: 0;
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .faq-item {
            background: var(--surface-light);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
            overflow: hidden;
        }

        .faq-item:hover {
            border-color: #d0d5f0;
        }

        .faq-question {
            padding: 1.1rem 1.25rem;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--ink-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            user-select: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.3rem;
            font-weight: 400;
            color: var(--brand-600);
            flex-shrink: 0;
            transition: transform var(--transition-fast);
            width: 1.5rem;
            text-align: center;
        }

        .faq-item.open .faq-question::after {
            content: '−';
            transform: rotate(0deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), padding 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            padding: 0 1.25rem;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.25rem 1.1rem;
        }

        .faq-answer p {
            margin: 0;
            font-size: 0.875rem;
            color: var(--ink-secondary);
            line-height: 1.7;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #1a1b2e;
            color: #c9cdd6;
            padding: 2.5rem 0;
            text-align: center;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1.5rem;
            margin-bottom: 1.25rem;
        }

        .footer-links a {
            color: #c9cdd6;
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: #ffffff;
        }

        .site-footer p {
            margin: 0.15rem 0;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 1023px) {
            .sidebar {
                order: -1;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 1rem;
            }
            .sidebar-card {
                flex: 1 1 240px;
                min-width: 200px;
            }
        }

        @media (max-width: 640px) {
            .sidebar {
                order: -1;
                flex-direction: column;
            }
            .sidebar-card {
                flex: 1 1 auto;
            }
            .article-card-body {
                padding: 1rem;
            }
            .article-card-title {
                font-size: 1rem;
            }
            .brand-logo {
                font-size: 1.25rem;
            }
            .brand-logo .logo-icon {
                width: 1.85rem;
                height: 1.85rem;
                font-size: 0.9rem;
            }
        }

        @media (max-width: 480px) {
            .channel-tag {
                padding: 0.4rem 0.7rem;
                font-size: 0.8rem;
            }
            .category-hero h1 {
                font-size: 1.4rem;
            }
            .article-card {
                grid-template-columns: 1fr;
            }
            .article-card-img {
                aspect-ratio: 16/9;
                max-height: 200px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.75rem;
            }
            .stat-num {
                font-size: 1.5rem;
            }
        }