:root {
            --primary-color: #E06D53; /* 温暖柔和的陶土红/珊瑚粉 */
            --primary-hover: #D05C43;
            --secondary-color: #4A6B82; /* 沉稳的黛蓝 */
            --bg-light: #FAF8F5; /* 暖米白背景 */
            --card-bg: #FFFFFF;
            --text-dark: #2C3E50;
            --text-muted: #7F8C8D;
            --accent-light: #FFF5F2;
            --border-color: #EAE5DF;
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            --radius: 12px;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

        body {
            background-color: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.6;
        }

        .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 1. Header 导航 */
        header {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary-color);
            text-decoration: none;
        }

        .logo span {
            font-size: 0.85rem;
            font-weight: 400;
            color: var(--text-muted);
            border-left: 1px solid var(--border-color);
            padding-left: 10px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .btn-link {
            color: var(--text-dark);
            text-decoration: none;
            font-size: 0.9rem;
        }

        .btn-primary-sm {
            background: var(--primary-color);
            color: #fff;
            padding: 8px 18px;
            border-radius: 20px;
            text-decoration: none;
            font-size: 0.85rem;
            font-weight: 600;
        }

        /* 面包屑 */
        .breadcrumb {
            padding: 20px 0 10px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .breadcrumb a {
            color: var(--text-muted);
            text-decoration: none;
        }

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

        /* 专栏页 Header */
        .category-hero {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 35px 25px;
            border: 1px solid var(--border-color);
            margin-bottom: 30px;
            box-shadow: var(--shadow);
        }

        .category-hero h1 {
            font-size: 1.8rem;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .category-hero p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* 分类筛选 Tab */
        .filter-tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 20px;
            padding-top: 15px;
            border-top: 1px solid var(--border-color);
        }

        .tag-btn {
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            text-decoration: none;
            color: var(--text-dark);
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            transition: all 0.2s ease;
        }

        .tag-btn.active, .tag-btn:hover {
            background: var(--primary-color);
            color: #fff;
            border-color: var(--primary-color);
        }

        /* 2. 列表页双栏布局 */
        .list-layout {
            display: grid;
            grid-template-columns: 1fr;
            gap: 30px;
            margin-bottom: 50px;
        }

        @media (min-width: 992px) {
            .list-layout {
                grid-template-columns: 2.8fr 1.2fr;
            }
        }

        /* 文章列表 */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .article-item {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 25px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow);
            transition: transform 0.2s ease;
        }

        .article-item:hover {
            transform: translateY(-2px);
        }

        .item-category {
            font-size: 0.75rem;
            color: var(--secondary-color);
            font-weight: 700;
            background: #F0F4F8;
            padding: 3px 10px;
            border-radius: 10px;
            display: inline-block;
            margin-bottom: 10px;
        }

        .item-title {
            font-size: 1.2rem;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .item-title a {
            color: var(--text-dark);
            text-decoration: none;
        }

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

        .item-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 15px;
            line-height: 1.5;
        }

        .item-meta {
            display: flex;
            justify-content: space-between;
            font-size: 0.8rem;
            color: #A0AEC0;
        }

        /* 分页器 */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 35px;
        }

        .page-link {
            padding: 8px 14px;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            color: var(--text-dark);
            text-decoration: none;
            font-size: 0.85rem;
        }

        .page-link.active, .page-link:hover {
            background: var(--primary-color);
            color: #fff;
            border-color: var(--primary-color);
        }

        /* 侧边栏 */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .sidebar-card {
            background: var(--card-bg);
            padding: 25px;
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow);
        }

        .sidebar-card h3 {
            font-size: 1.1rem;
            color: var(--text-dark);
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--bg-light);
        }

        .btn-cta {
            display: inline-block;
            background: var(--primary-color);
            color: #fff;
            padding: 12px 28px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            font-size: 0.95rem;
            box-shadow: 0 4px 15px rgba(224, 109, 83, 0.25);
            text-align: center;
        }

        /* 3. SEO 恋爱知识专栏推荐版块 */
        .seo-blog-section {
            background: var(--card-bg);
            border-radius: 20px;
            padding: 40px 25px;
            border: 1px solid var(--border-color);
            margin: 40px 0;
            box-shadow: var(--shadow);
        }

        .blog-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            margin-bottom: 25px;
            border-bottom: 2px solid var(--bg-light);

            padding-bottom: 15px;
        }

        .blog-header h2 {
            font-size: 1.4rem;
            color: var(--text-dark);
        }

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

        @media (min-width: 768px) {
            .blog-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .blog-card {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            background: var(--bg-light);
            padding: 20px;
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
        }

        .blog-tag {
            font-size: 0.75rem;
            color: var(--secondary-color);
            font-weight: 700;
            margin-bottom: 8px;
            display: inline-block;
        }

        .blog-card h3 {
            font-size: 1rem;
            line-height: 1.4;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .blog-card h3 a {
            color: inherit;
            text-decoration: none;
        }

        .blog-card h3 a:hover {
            color: var(--primary-color);
        }

        .blog-snippet {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 15px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .blog-meta {
            font-size: 0.75rem;
            color: #A0AEC0;
            display: flex;
            justify-content: space-between;
        }

        /* Footer */
        footer {
            background: #232B32;
            color: #A0AEC0;
            padding: 40px 0 20px;
            margin-top: 60px;
            text-align: center;
            font-size: 0.85rem;
        }

        .footer-cta {
            padding: 30px 0;
            border-bottom: 1px solid #323D47;
            margin-bottom: 20px;
        }

        .footer-cta h3 {
            color: #FFF;
            margin-bottom: 15px;
            font-size: 1.3rem;
        }

        .btn-primary {
            display: inline-block;
            background: var(--primary-color);
            color: #fff;
            font-size: 1.1rem;
            font-weight: 600;
            padding: 16px 36px;
            border-radius: 50px;
            text-decoration: none;
            box-shadow: 0 6px 20px rgba(224, 109, 83, 0.3);
        }

        .disclaimer {
            max-width: 800px;
            margin: 0 auto;
            line-height: 1.5;
            color: #718096;
            font-size: 0.75rem;
        }