* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 导航栏 */
        .navbar {
            background-color: #fff;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        
        .navbar-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
            text-decoration: none;
            color: #333;
        }
        
        .logo img {
            width: 24px;
            height: 24px;
            margin-right: 8px;
        }
        
        .logo span {
            font-weight: bold;
            font-size: 18px;
        }
        
        .nav-links {
            display: flex;
            list-style: none;
        }
        
        .nav-links li {
            margin-left: 24px;
        }
        
        .nav-links a {
            text-decoration: none;
            color: #333;
            font-size: 14px;
            transition: color 0.3s;
        }
        
        .nav-links a:hover {
            color: #409EFF;
        }
        
        .user-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background-color: #f0f0f0;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }
        
        /* 搜索区域 */
        .search-section {
            padding: 80px 0;
            text-align: center;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
        }
        
        .search-logo {
            margin-bottom: 20px;
        }
        
        .search-logo img {
         width: 250px;
            height: 100px;
            margin-bottom: 16px;
        }
        
        .search-logo h1 {
            font-size: 36px;
            font-weight: bold;
            color: #333;
            margin-bottom: 12px;
        }
        
        .search-logo p {
            font-size: 16px;
            color: #666;
            margin-bottom: 32px;
        }
        
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            position: relative;
        }
        
        .search-input {
            width: 100%;
            padding: 16px 24px;
            border: 1px solid #ddd;
            border-radius: 25px;
            font-size: 16px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            outline: none;
            transition: all 0.3s;
        }
        
        .search-input:focus {
            border-color: #409EFF;
            box-shadow: 0 2px 8px rgba(64, 158, 255, 0.3);
        }
        
        .search-btn {
            position: absolute;
            right: 4px;
            top: 50%;
            transform: translateY(-50%);
            background-color: #409EFF;
            color: white;
            border: none;
            border-radius: 20px;
            padding: 12px 24px;
            font-size: 14px;
            font-weight: bold;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        
        .search-btn:hover {
            background-color: #66b1ff;
        }
        
        /* 今日热搜 */
        .hot-search {
            padding: 40px 0;
            background-color: #fff;
        }
        
        .hot-search-container {
            max-width: 1000px;
            margin: 0 auto;
        }
        
        .hot-search-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }
        
        .hot-search-title {
            font-size: 16px;
            font-weight: bold;
            color: #333;
            display: flex;
            align-items: center;
        }
        
        .hot-search-title::before {
            content: "🔥";
            margin-right: 8px;
        }
        
        .hot-search-more {
            font-size: 14px;
            color: #999;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .hot-search-more:hover {
            color: #409EFF;
        }
        
        .hot-search-list {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        
        .hot-search-item {
            display: flex;
            align-items: center;
        }
        
        .hot-search-rank {
            font-size: 14px;
            font-weight: bold;
            margin-right: 8px;
            width: 20px;
            text-align: right;
        }
        
        .hot-search-rank.top3 {
            color: #ff4d4f;
        }
        
        .hot-search-text {
            font-size: 14px;
            color: #333;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .hot-search-text:hover {
            color: #409EFF;
        }
        
        /* 科技资讯 */
        .tech-news {
            padding: 40px 0;
            background-color: #f8f9fa;
        }
        
        .tech-news-container {
            max-width: 1000px;
            margin: 0 auto;
        }
        
        .tech-news-header {
            margin-bottom: 24px;
        }
        
        .tech-news-title {
            font-size: 16px;
            font-weight: bold;
            color: #333;
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }
        
        .tech-news-title::before {
            content: "💻";
            margin-right: 8px;
        }
        
        .tech-news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(480px, 1fr));
            gap: 24px;
        }
        
        .tech-news-card {
            background-color: #fff;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        
        .tech-news-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 4px 16px rgba(0,0,0,0.15);
        }
        
        .tech-news-content {
            padding: 16px;
        }
        
        .tech-news-card h3 {
            font-size: 16px;
            font-weight: bold;
            color: #333;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        
        .tech-news-card p {
            font-size: 14px;
            color: #666;
            line-height: 1.4;
            margin-bottom: 12px;
        }
        
        .tech-news-source {
            font-size: 12px;
            color: #999;
        }
        
        /* 页脚 */
        .footer {
            background-color: #333;
            color: #fff;
            padding: 40px 0;
            text-align: center;
        }
        
        .footer-content {
            max-width: 1000px;
            margin: 0 auto;
        }
        
        .footer-logo {
            font-size: 20px;
            font-weight: bold;
            margin-bottom: 16px;
        }
        
        .footer-links {
            margin-bottom: 24px;
        }
        
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            margin: 0 12px;
            font-size: 14px;
            transition: color 0.3s;
        }
        
        .footer-links a:hover {
            color: #409EFF;
        }
        
        .footer-copyright {
            font-size: 12px;
            color: #999;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .navbar-container {
                flex-direction: column;
                align-items: flex-start;
            }
            
            .nav-links {
                margin-top: 12px;
            }
            
            .nav-links li {
                margin-left: 0;
                margin-right: 16px;
            }
            
            .search-section {
                padding: 60px 0;
            }
            
            .search-logo h1 {
                font-size: 28px;
            }
            
            .search-form {
                max-width: 90%;
            }
            
            .hot-search-list {
                gap: 12px;
            }
            
            .hot-search-item {
                flex-basis: calc(50% - 6px);
            }
            
            .tech-news-grid {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 480px) {
            .search-section {
                padding: 40px 0;
            }
            
            .search-logo h1 {
                font-size: 24px;
            }
            
            .search-logo p {
                font-size: 14px;
            }
            
            .hot-search-item {
                flex-basis: 100%;
            }
        }