/* 基础样式 */
    * {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    
    body {
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        line-height: 1.6;
        color: #333;
        background-color: #f5f7fa;
        padding: 20px;
    }
    
    .container {
        max-width: 1200px;
        margin: 0 auto;
        background-color: #fff;
        border-radius: 10px;
        box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
        padding: 30px;
    }
    
    .header {
        text-align: center;
        margin-bottom: 30px;
        padding-bottom: 20px;
        border-bottom: 1px solid #eee;
        position: relative;
    }
    
    .header h1 {
        color: #2c3e50;
        margin-bottom: 10px;
    }
    
    /* 新邮件标记 */
    .new-badge {
        background-color: #e74c3c;
        color: white;
        padding: 3px 8px;
        border-radius: 4px;
        font-size: 12px;
        margin-left: 10px;
    }
    
    /* 时间信息 */
    .time-info {
        background-color: #e1f0fa;
        padding: 8px 15px;
        border-radius: 4px;
        margin-bottom: 15px;
        font-size: 14px;
        color: #3498db;
    }
    
    /* 账号统计 */
    .account-stats {
        background-color: #f8f9fa;
        border-radius: 8px;
        padding: 20px;
        margin-bottom: 30px;
    }
    
    .account-stats h2 {
        margin-bottom: 15px;
        color: #3498db;
    }
    
    .stats-container {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 15px;
    }
    
    .account-stat {
        background-color: #e1f0fa;
        border-radius: 8px;
        padding: 15px;
        border-left: 4px solid #3498db;
        transition: transform 0.3s;
    }
    
    .account-stat:hover {
        transform: translateY(-3px);
    }
    
    .account-name {
        font-weight: bold;
        font-size: 18px;
        margin-bottom: 5px;
        color: #2c3e50;
    }
    
    .account-email {
        color: #7f8c8d;
        font-size: 14px;
        margin-bottom: 8px;
    }
    
    .account-count, .account-check {
        font-size: 14px;
        color: #2c3e50;
    }
    
    /* 搜索区域 */
    .search-section {
        background-color: #f8f9fa;
        border-radius: 8px;
        padding: 25px;
        margin-bottom: 30px;
    }
    
    .search-section h2 {
        margin-bottom: 20px;
        color: #3498db;
    }
    
    .form-group {
        margin-bottom: 20px;
    }
    
    label {
        display: block;
        margin-bottom: 8px;
        font-weight: 600;
        color: #2c3e50;
    }
    
    input[type="text"] {
        width: 100%;
        padding: 12px 15px;
        border: 1px solid #ddd;
        border-radius: 5px;
        font-size: 16px;
        transition: border-color 0.3s;
    }
    
    input[type="text"]:focus {
        border-color: #3498db;
        outline: none;
        box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
    }
    
    .btn {
        background-color: #3498db;
        color: white;
        border: none;
        padding: 12px 25px;
        border-radius: 5px;
        cursor: pointer;
        font-size: 16px;
        font-weight: 600;
        transition: background-color 0.3s;
    }
    
    .search-btn {
        width: 100%;
    }
    
    .btn:hover {
        background-color: #2980b9;
    }
    
    /* 标签样式 */
    .suggestions {
        margin-top: 25px;
    }
    
    .suggestions p {
        margin-bottom: 10px;
        color: #7f8c8d;
    }
    
    .tag-container {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .tag {
        background-color: #e1f0fa;
        color: #3498db;
        padding: 8px 15px;
        border-radius: 20px;
        font-size: 14px;
        cursor: pointer;
        transition: all 0.3s;
    }
    
    .tag:hover {
        background-color: #3498db;
        color: white;
    }
    
    /* 结果区域 */
    .results-section {
        margin-bottom: 30px;
    }
    
    .result-info {
        background-color: #e8f4fd;
        padding: 15px;
        border-radius: 5px;
        margin-bottom: 20px;
    }
    
    .result-info p {
        margin-bottom: 5px;
    }
    
    .email-list {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
        gap: 20px;
    }
    
    .email-item {
        border: 1px solid #eee;
        border-radius: 8px;
        padding: 20px;
        background-color: #fff;
        box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        transition: transform 0.3s, box-shadow 0.3s;
        position: relative;
    }
    
    .email-item:hover {
        transform: translateY(-5px);
        box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    }
    
    .email-header {
        display: flex;
        justify-content: space-between;
        margin-bottom: 10px;
    }
    
    .email-subject {
        font-weight: 600;
        font-size: 18px;
        color: #2c3e50;
        flex: 1;
    }
    
    .email-account {
        background-color: #e1f0fa;
        color: #3498db;
        padding: 3px 8px;
        border-radius: 4px;
        font-size: 12px;
        align-self: flex-start;
    }
    
    .email-meta {
        margin-bottom: 10px;
    }
    
    .meta-item {
        display: flex;
        margin-bottom: 5px;
        font-size: 14px;
    }
    
    .meta-label {
        font-weight: 600;
        color: #7f8c8d;
        min-width: 60px;
    }
    
    .meta-value {
        flex: 1;
    }
    
    .email-preview {
        color: #555;
        margin-bottom: 15px;
        font-size: 14px;
        line-height: 1.5;
    }
    
    .email-actions {
        text-align: right;
    }
    
    /* 所有收件人区域 */
    .all-recipients {
        margin-bottom: 30px;
    }
    
    .all-recipients h2 {
        margin-bottom: 15px;
        color: #3498db;
    }
    
    .recipient-list {
        list-style: none;
        max-height: 300px;
        overflow-y: auto;
        border: 1px solid #eee;
        border-radius: 5px;
        padding: 10px;
    }
    
    .recipient-list li {
        padding: 10px 15px;
        border-bottom: 1px solid #f0f0f0;
    }
    
    .recipient-list li:last-child {
        border-bottom: none;
    }
    
    .recipient-link {
        text-decoration: none;
        color: #3498db;
        display: block;
        padding: 8px 0;
    }
    
    .recipient-link:hover {
        color: #2980b9;
        text-decoration: underline;
    }
    
    .no-results {
        text-align: center;
        padding: 30px;
        color: #7f8c8d;
        font-size: 18px;
    }
    
    /* 邮件详情页 */
    .email-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 20px;
        padding-bottom: 15px;
        border-bottom: 1px solid #eee;
    }
    
    .subject {
        font-size: 24px;
        font-weight: bold;
        color: #2c3e50;
    }
    
    .account-badge {
        background-color: #3498db;
        color: white;
        padding: 5px 10px;
        border-radius: 4px;
        font-size: 14px;
    }
    
    .email-meta {
        background-color: #f8f9fa;
        border-radius: 8px;
        padding: 15px;
        margin-bottom: 20px;
    }
    
    .email-body {
        margin-bottom: 30px;
        padding: 20px;
        border: 1px solid #eee;
        border-radius: 8px;
        background-color: #fff;
    }
    
    .email-footer {
        text-align: center;
        margin-top: 20px;
    }
    
    .back-btn {
        display: inline-block;
        padding: 10px 20px;
        text-decoration: none;
    }
    
    .attachments {
        margin-top: 20px;
        padding: 15px;
        border: 1px solid #eee;
        border-radius: 8px;
        background-color: #f8f9fa;
    }
    
    .attachment-item {
        margin-bottom: 8px;
        padding: 8px;
        background-color: #fff;
        border-radius: 4px;
    }
    
    .attachment-account {
        font-size: 12px;
        color: #7f8c8d;
        margin-left: 10px;
    }