/* 裁音魔方 · 页面样式（自 pages/articles.html 抽取，修改后请同步对应页面） */
        :root {
            --primary: #4CAF50;
            --primary-light: #81C784;
            --primary-dark: #388E3C;
            --secondary: #8BC34A;
            --accent: #CDDC39;
            --dark-bg: #121212;
            --darker-bg: #0A0A0A;
            --card-bg: #1E1E1E;
            --card-light: #252525;
            --card-border: #333333;
            --text-primary: #FFFFFF;
            --text-secondary: #B0B0B0;
            --success: #4CAF50;
            --warning: #FF9800;
            --error: #F44336;
            --gradient: linear-gradient(135deg, var(--primary), var(--primary-dark));
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Poppins', 'Segoe UI', sans-serif;
        }
        
        body {
            background-color: var(--darker-bg);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        a {
            text-decoration: none;
            color: inherit;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* ===== 导航栏 ===== */
        .navbar {
            position: fixed;
            top: 0;
            width: 100%;
            background-color: rgba(10, 10, 10, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            padding: 20px 0;
            border-bottom: 1px solid rgba(76, 175, 80, 0.1);
            transition: all 0.3s ease;
        }
        
        .navbar.scrolled {
            padding: 15px 0;
            background-color: rgba(10, 10, 10, 0.98);
        }
        
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
        }
        
        .logo i {
            font-size: 28px;
        }
        
        .logo span {
            color: white;
        }
        
        .nav-links {
            display: flex;
            gap: 30px;
        }
        
        .nav-links a {
            font-weight: 500;
            font-size: 16px;
            transition: color 0.3s;
            position: relative;
        }
        
        .nav-links a:hover {
            color: var(--primary);
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: width 0.3s;
        }
        
        .nav-links a:hover::after {
            width: 100%;
        }
        
        .nav-links a.active {
            color: var(--primary);
        }
        
        .nav-links a.active::after {
            width: 100%;
        }
        
        .nav-buttons {
            display: flex;
            gap: 15px;
        }
        
        .btn {
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            border: none;
            font-size: 16px;
        }
        
        .btn-primary {
            background: var(--gradient);
            color: white;
        }
        
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(76, 175, 80, 0.3);
        }
        
        .btn-secondary {
            background-color: transparent;
            color: var(--text-primary);
            border: 1px solid var(--card-border);
        }
        
        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 24px;
            cursor: pointer;
        }
        
        /* ===== 页面头部 ===== */
        .page-header {
            padding: 160px 0 60px;
            background: linear-gradient(180deg, var(--darker-bg) 0%, rgba(18, 18, 18, 0.9) 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        
        .page-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 50% 30%, rgba(76, 175, 80, 0.1) 0%, transparent 50%);
        }
        
        .page-header h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 15px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        
        .page-header p {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }
        
        /* ===== 分类筛选 ===== */
        .category-filter {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-bottom: 40px;
        }
        
        .category-filter a {
            padding: 8px 24px;
            border-radius: 20px;
            border: 1px solid var(--card-border);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s;
        }
        
        .category-filter a:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        
        .category-filter a.active {
            background: var(--gradient);
            border-color: var(--primary);
            color: white;
        }
        
        /* ===== 文章列表 ===== */
        .article-list {
            padding: 20px 0 80px;
        }
        
        .article-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 30px;
        }
        
        .article-card {
            background-color: var(--card-bg);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--card-border);
            transition: all 0.3s;
        }
        
        .article-card:hover {
            transform: translateY(-8px);
            border-color: var(--primary);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
        }
        
        .article-cover {
            height: 200px;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 48px;
            color: rgba(255, 255, 255, 0.2);
            overflow: hidden;
        }
        
        /* 封面实图：<img loading=lazy> 原生懒加载，铺满容器 */
        .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .article-cover .category-tag {
            position: absolute;
            top: 15px;
            left: 15px;
            background: var(--primary);
            color: white;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
        }
        
        .article-body {
            padding: 25px;
        }
        
        .article-meta {
            display: flex;
            gap: 20px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }
        
        .article-meta i {
            margin-right: 5px;
            color: var(--primary);
        }
        
        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 12px;
            line-height: 1.4;
            transition: color 0.3s;
        }
        
        .article-card:hover .article-body h3 {
            color: var(--primary);
        }
        
        .article-body p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        
        .article-footer {
            padding: 15px 25px 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        
        .article-footer .read-more {
            color: var(--primary);
            font-weight: 500;
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: gap 0.3s;
        }
        
        .article-footer .read-more:hover {
            gap: 12px;
        }
        
        .article-footer .read-time {
            color: var(--text-secondary);
            font-size: 13px;
        }
        
        /* ===== 封面颜色 ===== */
        .cover-1 { background: linear-gradient(135deg, #1a3a1a, #2d5a2d); }
        .cover-2 { background: linear-gradient(135deg, #1a2a3a, #2d4a5a); }
        .cover-3 { background: linear-gradient(135deg, #2a1a3a, #4a2d5a); }
        .cover-4 { background: linear-gradient(135deg, #3a2a1a, #5a4a2d); }
        .cover-5 { background: linear-gradient(135deg, #1a3a2a, #2d5a4a); }
        .cover-6 { background: linear-gradient(135deg, #3a1a2a, #5a2d4a); }
        
        /* ===== 分页 ===== */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-top: 50px;
        }
        
        .pagination a {
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: 44px;
            height: 44px;
            padding: 0 16px;
            border-radius: 8px;
            border: 1px solid var(--card-border);
            color: var(--text-secondary);
            transition: all 0.3s;
            font-weight: 500;
        }
        
        .pagination a:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        
        .pagination a.active {
            background: var(--gradient);
            border-color: var(--primary);
            color: white;
        }
        
        .pagination a.prev-next {
            padding: 0 20px;
        }
        
        /* ===== 页脚 ===== */
        .footer {
            background-color: var(--dark-bg);
            padding: 80px 0 40px;
            border-top: 1px solid var(--card-border);
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 40px;
            margin-bottom: 50px;
        }
        
        .footer-column h3 {
            font-size: 18px;
            margin-bottom: 20px;
            color: var(--primary);
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a {
            color: var(--text-secondary);
            transition: color 0.3s;
            font-size: 14px;
        }
        
        .footer-links a:hover {
            color: var(--primary);
        }
        
        .copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid var(--card-border);
            color: var(--text-secondary);
            font-size: 14px;
        }
        
        /* ===== 响应式 ===== */
        @media (max-width: 768px) {
            .navbar {
                padding: 15px 0;
            }
            
            .nav-links, .nav-buttons {
                display: none;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .page-header {
                padding: 140px 0 40px;
            }
            
            .page-header h1 {
                font-size: 32px;
            }
            
            .article-grid {
                grid-template-columns: 1fr;
            }
            
            .article-cover {
                height: 160px;
            }
            
            .category-filter {
                gap: 8px;
            }
            
            .category-filter a {
                padding: 6px 16px;
                font-size: 13px;
            }
        }
        
        /* ===== 移动菜单 ===== */
        .mobile-menu {
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background-color: var(--darker-bg);
            padding: 20px;
            border-top: 1px solid var(--card-border);
            transform: translateY(-100%);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
            z-index: 999;
        }
        
        .mobile-menu.active {
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }
        
        .mobile-nav-links {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-bottom: 30px;
        }
        
        .mobile-nav-links a {
            font-size: 18px;
            padding: 10px 0;
            border-bottom: 1px solid var(--card-border);
        }
        
        .mobile-buttons {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }