:root {
            --primary-color: #4361ee;
            --secondary-color: #3f37c9;
            --accent-color: #4895ef;
            --dark-color: #1b263b;
            --light-color: #f8f9fa;
            --success-color: #4cc9f0;
            --warning-color: #f8961e;
            --danger-color: #f72585;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }
        
        body {
            background-color: #f8fafc;
            color: #1e293b;
            line-height: 1.6;
        }
        
        .container {
            width: 1200px;
            margin: 0 auto;
        }
        
        /* 头部样式 */
        header {
            background-color: white;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 15px 0;
        }
        
        .header-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-color);
        }
        
        .logo-icon {
            font-size: 28px;
            color: var(--accent-color);
        }
        
        nav ul {
            display: flex;
            gap: 25px;
            list-style: none;
        }
        
        nav ul li a {
            color: var(--dark-color);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
            position: relative;
        }
        
        nav ul li a:hover {
            color: var(--primary-color);
        }
        
        nav ul li a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary-color);
            transition: width 0.3s;
        }
        
        nav ul li a:hover::after {
            width: 100%;
        }
        
        .header-actions {
            display: flex;
            gap: 15px;
        }
        
        .btn {
            display: inline-block;
            padding: 10px 20px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s;
            cursor: pointer;
        }
        
        .btn-outline {
            border: 1px solid var(--primary-color);
            color: var(--primary-color);
        }
        
        .btn-outline:hover {
            background-color: var(--primary-color);
            color: white;
        }
        
        .btn-primary {
            background-color: var(--primary-color);
            color: white;
            border: 1px solid var(--primary-color);
        }
        
        .btn-primary:hover {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
        }
        
        /* 英雄区域 */
        .hero {
            background: linear-gradient(135deg, #4361ee 0%, #3a0ca3 100%);
            color: white;
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background: url('https://images.unsplash.com/photo-1551434678-e076c223a692?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1470&q=80') no-repeat center/cover;
            opacity: 0.2;
        }
        
        .hero-content {
            width: 60%;
            position: relative;
            z-index: 1;
        }
        
        .hero h1 {
            font-size: 42px;
            line-height: 1.2;
            margin-bottom: 20px;
        }
        
        .hero p {
            font-size: 18px;
            margin-bottom: 30px;
            opacity: 0.9;
        }
        
        .hero-buttons {
            display: flex;
            gap: 15px;
        }
        
        /* 服务特色 */
        .features {
            padding: 80px 0;
            background-color: white;
        }
        
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        
        .section-header h2 {
            font-size: 32px;
            color: var(--dark-color);
            margin-bottom: 15px;
        }
        
        .section-header p {
            color: #64748b;
            max-width: 700px;
            margin: 0 auto;
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        
        .feature-card {
            background-color: var(--light-color);
            border-radius: 10px;
            padding: 30px;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        
        .feature-icon {
            font-size: 36px;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        
        .feature-card h3 {
            font-size: 20px;
            margin-bottom: 15px;
            color: var(--dark-color);
        }
        
        .feature-card p {
            color: #64748b;
        }
        
        /* 文章列表区域 */
        .articles {
            padding: 80px 0;
            background-color: #f8fafc;
        }
        
        .articles-container {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
        }
        
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        
        .article-item {
            background-color: white;
            border-radius: 8px;
            padding: 25px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        
        .article-item:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        
        .article-item h3 {
            font-size: 18px;
            margin-bottom: 10px;
            color: var(--dark-color);
        }
        
        .article-item h3 a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .article-item h3 a:hover {
            color: var(--primary-color);
        }
        
        .article-meta {
            display: flex;
            gap: 15px;
            color: #64748b;
            font-size: 14px;
            margin-bottom: 10px;
        }
        
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        .article-excerpt {
            color: #64748b;
            margin-bottom: 15px;
        }
        
        .read-more {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: gap 0.3s;
        }
        
        .read-more:hover {
            gap: 8px;
        }
        
        /* 侧边栏 */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        
        .sidebar-widget {
            background-color: white;
            border-radius: 8px;
            padding: 25px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }
        
        .widget-title {
            font-size: 18px;
            color: var(--dark-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid #e2e8f0;
        }
        
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        
        .tag {
            display: inline-block;
            background-color: #e2e8f0;
            color: #64748b;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 14px;
            text-decoration: none;
            transition: all 0.3s;
        }
        
        .tag:hover {
            background-color: var(--primary-color);
            color: white;
        }
        
        /* 简洁文章列表 */
        .simple-article-list {
            list-style: none;
        }
        
        .simple-article-item {
            padding: 12px 0;
            border-bottom: 1px dashed #e2e8f0;
        }
        
        .simple-article-item:last-child {
            border-bottom: none;
        }
        
        .simple-article-item a {
            color: #475569;
            text-decoration: none;
            transition: color 0.3s;
            display: block;
        }
        
        .simple-article-item a:hover {
            color: var(--primary-color);
        }
        
        /* 页脚 */
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 60px 0 30px;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-col h3 {
            font-size: 18px;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-col h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background-color: var(--accent-color);
        }
        
        .footer-col p {
            color: #94a3b8;
            margin-bottom: 20px;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 12px;
        }
        
        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.3s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .footer-links a:hover {
            color: white;
        }
        
        .footer-links i {
            font-size: 14px;
        }
        
        .social-links {
            display: flex;
            gap: 15px;
        }
        
        .social-links a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: rgba(255,255,255,0.1);
            color: white;
            transition: all 0.3s;
        }
        
        .social-links a:hover {
            background-color: var(--accent-color);
            transform: translateY(-3px);
        }
        
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #94a3b8;
            font-size: 14px;
        }