* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
            padding: 20px;
            color: #333;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        /* 头部样式 */
        .header {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            background: linear-gradient(90deg, #1a3a5f 0%, #2c5a8a 100%);
            border-radius: 12px 12px 0 0;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
            color: white;
            margin-bottom: 30px;
            position: relative;
            overflow: hidden;
        }
        
        .header::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #4CAF50, #2196F3, #FFC107);
        }
        
        .logo {
            width: 80px;
            height: 80px;
            margin-right: 20px;
            background: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
            overflow: hidden;
        }
        
        .logo img {
            width: 75%;
            height: 75%;
            object-fit: contain;
        }
        
        .header-content h1 {
            font-size: 32px;
            margin-bottom: 8px;
            font-weight: 700;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
        }
        
        .header-content p {
            font-size: 16px;
            opacity: 0.9;
            text-align: center;
        }
        
        /* 联系信息 */
        .contact-bar {
            background: #fff;
            padding: 15px 20px;
            border-radius: 10px;
            margin-bottom: 30px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 25px;
        }
        
        .contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 16px;
            color: #1a3a5f;
        }
        
        .contact-item i {
            color: #4CAF50;
            font-size: 18px;
        }
        
        /* 搜索区域 */
        .search-container {
            background: #fff;
            border-radius: 12px;
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
        }
        
        .search-title {
            text-align: center;
            margin-bottom: 25px;
            color: #1a3a5f;
            font-size: 24px;
            font-weight: 600;
            position: relative;
            padding-bottom: 15px;
        }
        
        .search-title::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, #4CAF50, #2196F3);
            border-radius: 2px;
        }
        
        .search-form {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            max-width: 900px;
            margin: 0 auto;
        }
        
        .input-group {
            display: flex;
            flex-direction: column;
            flex: 1;
            min-width: 250px;
        }
        
        .input-group label {
            margin-bottom: 8px;
            font-weight: 500;
            color: #1a3a5f;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .input-group label i {
            color: #4CAF50;
        }
        
        .input-group input {
            padding: 14px 18px;
            border: 2px solid #e1e8ed;
            border-radius: 8px;
            font-size: 16px;
            transition: all 0.3s ease;
        }
        
        .input-group input:focus {
            border-color: #2196F3;
            outline: none;
            box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.2);
        }
        
        .search-btn {
            background: linear-gradient(90deg, #4CAF50 0%, #2E7D32 100%);
            color: white;
            border: none;
            padding: 14px 35px;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 10px rgba(76, 175, 80, 0.3);
            align-self: flex-end;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .search-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(76, 175, 80, 0.4);
        }
        
        /* 结果表格 */
        .results-container {
            background: #fff;
            border-radius: 12px;
            padding: 25px;
            margin-bottom: 30px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            overflow: hidden;
        }
        
        .results-title {
            font-size: 22px;
            color: #1a3a5f;
            margin-bottom: 20px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        /* 添加表格容器用于移动端滚动 */
        .table-container {
            overflow-x: auto;
            border-radius: 8px;
            box-shadow: 0 0 0 1px #e1e8ed;
            margin-top: 10px;
        }
        
        table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px; /* 确保在小屏幕上表格不会被压缩 */
        }
        
        thead {
            background: linear-gradient(90deg, #2c5a8a 0%, #1a3a5f 100%);
            color: white;
        }
        
        th {
            padding: 16px 15px;
            text-align: center;
            font-weight: 600;
            font-size: 17px;
        }
        
        tbody tr {
            border-bottom: 1px solid #e1e8ed;
            transition: background-color 0.2s;
        }
        
        tbody tr:nth-child(even) {
            background-color: #f8fafc;
        }
        
        tbody tr:hover {
            background-color: #edf7ff;
        }
        
        td {
            padding: 14px 15px;
            text-align: center;
            font-size: 16px;
            color: #444;
        }
        
        /* 证书展示 */
        .certificate-container {
            background: #fff;
            border-radius: 12px;
            padding: 25px;
            margin-bottom: 30px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
        }
        
        .certificate-title {
            font-size: 22px;
            color: #1a3a5f;
            margin-bottom: 20px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .certificate-preview {
            width: 100%;
            height: 400px;
            background: linear-gradient(135deg, #f8fafc 0%, #e4f0f9 100%);
            border: 2px dashed #c2d6e6;
            border-radius: 10px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: #7a9cbc;
            font-size: 18px;
            overflow: hidden;
        }
        
        .certificate-preview i {
            font-size: 60px;
            margin-bottom: 20px;
            color: #c2d6e6;
        }
        
        /* 返回按钮 */
        .footer {
            text-align: center;
            margin-top: 20px;
        }
        
        .home-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(90deg, #2196F3 0%, #1976D2 100%);
            color: white;
            text-decoration: none;
            padding: 14px 35px;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 4px 10px rgba(33, 150, 243, 0.3);
        }
        
        .home-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(33, 150, 243, 0.4);
        }
        
        /* 动画效果 */
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .search-container, .results-container, .certificate-container {
            animation: fadeIn 0.6s ease-out;
        }
        
        .highlight {
            background-color: #fff9c4 !important;
            font-weight: 600;
            color: #1a3a5f;
        }
        
        /* 证书图片样式 */
        .certificate-preview img {
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
        }
        
        /* 加载动画 */
        .loader {
            width: 48px;
            height: 48px;
            border: 5px solid #f3f3f3;
            border-top: 5px solid #3498db;
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin: 20px auto;
            display: none;
        }
        
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        /* 手机专用样式 */
        @media (max-width: 768px) {
            body {
                padding: 10px;
            }
            
            .header {
                flex-direction: column;
                text-align: center;
                padding: 15px;
            }
            
            .logo {
                margin-right: 0;
                margin-bottom: 15px;
            }
            
            .header-content h1 {
                font-size: 24px;
            }
            
            .header-content p {
                font-size: 14px;
            }
            
            .contact-bar {
                flex-direction: column;
                gap: 12px;
                padding: 12px;
                text-align: center;
            }
            
            .contact-item {
                justify-content: center;
                font-size: 14px;
            }
            
            .search-container {
                padding: 20px;
            }
            
            .search-title {
                font-size: 20px;
                margin-bottom: 20px;
            }
            
            .search-form {
                flex-direction: column;
                gap: 15px;
            }
            
            .input-group {
                min-width: 100%;
            }
            
            .search-btn {
                width: 100%;
                justify-content: center;
                margin-top: 5px;
            }
            
            .results-container, .certificate-container {
                padding: 20px;
            }
            
            .results-title, .certificate-title {
                font-size: 20px;
            }
            
            th, td {
                padding: 12px 8px;
                font-size: 14px;
            }
            
            .certificate-preview {
                height: 300px;
                font-size: 16px;
            }
            
            .home-btn {
                width: 100%;
                justify-content: center;
            }
        }
        
        /* 小屏手机样式 */
        @media (max-width: 480px) {
            .header-content h1 {
                font-size: 20px;
            }
            
            .contact-item span {
                font-size: 13px;
            }
            
            .search-title {
                font-size: 18px;
            }
            
            .search-btn {
                font-size: 16px;
                padding: 12px 20px;
            }
            
            .results-title, .certificate-title {
                font-size: 18px;
            }
            
            th, td {
                padding: 10px 6px;
                font-size: 13px;
            }
            
            .certificate-preview {
                height: 250px;
                font-size: 14px;
            }
            
            .certificate-preview i {
                font-size: 50px;
            }
            
            .home-btn {
                padding: 12px 20px;
                font-size: 16px;
            }
        }
        
        /* 移动端触摸优化 */
        input, button {
            -webkit-appearance: none;
            -moz-appearance: none;
            appearance: none;
            font-size: 16px; /* 防止iOS上字体缩小 */
        }
        
        .search-btn:active {
            transform: translateY(1px);
            box-shadow: 0 2px 5px rgba(76, 175, 80, 0.3);
        }
        
        /* 移动端表格行点击效果 */
        tbody tr {
            cursor: pointer;
        }
        
        tbody tr:active {
            background-color: #dbeafe !important;
        }
        
        /* 无结果提示 */
        .no-results {
            text-align: center;
            padding: 40px 20px;
            color: #7f8c8d;
        }
        
        .no-results i {
            font-size: 48px;
            margin-bottom: 15px;
            color: #bdc3c7;
        }