/* ========== 完全复用统一的全局样式 ========== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
        }

        body {
            background-color: #f5f7fa;
            padding: 0;
            min-width: 1200px; /* 电脑端最小宽度 */
        }

        /* ========== 统一风格的导航栏 ========== */
        .navbar {
            background-color: #28a745; /* 统一绿色导航栏 */
            color: #fff;
            padding: 15px 20px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 999;
        }
        .navbar-container {
            max-width: 1920px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .navbar-logo {
            font-size: 20px;
            font-weight: 700;
        }
        .navbar-menu {
            display: flex;
            gap: 30px;
        }
        .navbar-menu a {
            color: #fff;
            text-decoration: none;
            font-size: 14px;
            transition: opacity 0.3s;
        }
        .navbar-menu a:hover {
            opacity: 0.8;
            text-decoration: underline;
        }

        /* ========== 统一风格的页脚 ========== */
        .footer {
            background-color: #333;
            color: #ccc;
            padding: 20px 15px;
            margin-top: 40px;
        }
        .footer-container {
            max-width: 1920px;
            margin: 0 auto;
        }
        .footer-copyright {
            text-align: center;
            font-size: 12px;
            color: #999;
            line-height: 1.6;
        }

        /* ========== 容器样式（适配统一风格） ========== */
        .container {
            width: 98%;
            max-width: 1920px;
            margin: 0 auto;
            padding: 0 15px;
        }
        .container-inner {
            background: #fff;
            border-radius: 12px;
            box-shadow: 0 2px 15px rgba(0,0,0,0.05);
            padding: 30px;
            margin-top: 20px;
            margin-bottom: 20px;
        }

        /* ========== 模块样式（统一风格） ========== */
        .module {
            background: #fff;
            padding: 25px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            margin-bottom: 25px;
        }
        .title-btn-container {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 1px solid #e5e9f0;
        }
        .title-btn-container h2 {
            margin: 0;
            color: #2c3e50;
            font-size: 20px;
            padding-left: 10px;
            border-left: 4px solid #28a745;
        }
        .card-link-btn {
            display: inline-block;
            padding: 10px 20px;
            background: #28a745;
            color: #fff;
            text-decoration: none;
            border-radius: 4px;
            font-size: 14px;
            transition: background-color 0.2s;
        }
        .card-link-btn:hover {
            background: #218838;
        }

        /* ========== 表单样式（统一风格） ========== */
        .form-group {
            margin-bottom: 15px;
        }
        .form-group label {
            display: block;
            margin-bottom: 5px;
            color: #2c3e50;
            font-weight: 600;
            font-size: 14px;
        }
        .form-control {
            width: 100%;
            padding: 10px 15px;
            border: 1px solid #e5e9f0;
            border-radius: 4px;
            font-size: 14px;
            color: #333;
        }
        .form-control:focus {
            outline: none;
            border-color: #28a745;
            box-shadow: 0 0 0 2px rgba(40, 167, 69, 0.2);
        }
        .btn {
            display: inline-block;
            padding: 10px 20px;
            background-color: #28a745;
            color: #fff;
            border: none;
            border-radius: 4px;
            font-size: 14px;
            cursor: pointer;
            transition: background-color 0.2s;
            -webkit-tap-highlight-color: transparent;
            touch-action: manipulation;
        }
        .btn:hover {
            background-color: #218838;
        }

        /* ========== 结果区域样式 ========== */
        .result-area {
            margin-top: 25px;
            padding: 20px;
            background: #f8f9fa;
            border-radius: 8px;
            border: 1px solid #e5e9f0;
        }
        .result-table {
            width: 100%;
            border-collapse: collapse;
            margin: 10px 0;
        }
        .result-table th, .result-table td {
            padding: 12px 15px;
            border: 1px solid #e5e9f0;
            text-align: left;
        }
        .result-table th {
            background-color: #f0f8f4;
            color: #28a745;
            font-weight: 600;
        }
        .result-table tr:nth-child(even) {
            background-color: #f8f9fa;
        }

        /* ========== 状态样式 ========== */
        .delay-low { color: #28a745; font-weight: 500; }
        .delay-mid { color: #f59e0b; font-weight: 500; }
        .delay-high { color: #ef4444; font-weight: 500; }
        .error-msg { color: #ef4444; margin-bottom: 10px; padding: 8px; background: #fff1f0; border-radius: 4px; }

        /* ========== 历史记录样式（关键修改：统一风格） ========== */
        .history-display-area {
            margin-top: 20px;
            padding: 20px;
            background: #f8f9fa; /* 统一浅色背景 */
            border-radius: 8px;
            border: 1px solid #e5e9f0;
        }
        .history-display-area h4 {
            font-size: 15px;
            font-weight: 600;
            color: #333; /* 统一标题颜色 */
            margin-bottom: 10px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .history-items {
            display: flex;
            flex-wrap: wrap;
            gap: 8px; /* 统一间距 */
            max-height: 150px; /* 固定高度 */
            overflow-y: auto; /* 垂直滚动 */
            padding-right: 5px; /* 滚动条内边距 */
        }
        .history-item {
            text-decoration: none;
            color: #333; /* 统一文字颜色 */
            cursor: pointer;
            display: inline-block;
            padding: 6px 12px; /* 统一内边距 */
            background: #fff; /* 统一背景色 */
            border: 1px solid #ddd; /* 统一边框 */
            border-radius: 4px;
            font-size: 13px; /* 统一字体大小 */
            transition: all 0.2s;
            white-space: nowrap; /* 禁止换行 */
            margin: 0; /* 重置margin */
        }
        .history-item:hover {
            background: #e8f4f8; /* 统一hover背景 */
            border-color: #28a745; /* 统一hover边框色 */
            color: #28a745; /* 统一hover文字色 */
        }

        /* ========== 文章模块样式 ========== */
        .mod-article {
            margin-top: 20px;
        }
        .mod-article .hd {
            margin-bottom: 15px;
        }
        .mod-article .title {
            color: #28a745;
            font-size: 18px;
            font-weight: 600;
        }
        .mod-article .bd {
            line-height: 1.8;
            color: #555;
        }
        .mod-article .bd p {
            margin-bottom: 10px;
        }

        /* ========== 保留路由追踪页面特有的样式 ========== */
        .result-loading {
            text-align: center;
            color: #28a745;
            font-size: 14px;
            padding: 20px;
        }

        /* ========== 响应式适配（统一逻辑） ========== */
        @media only screen and (max-width: 767px) {
            body {
                min-width: unset;
                width: 100%;
                overflow-x: hidden;
            }
            .container {
                width: 100%;
                padding: 0 10px;
            }
            .container-inner {
                padding: 15px;
                margin: 10px auto;
                border-radius: 8px;
            }
            .navbar {
                padding: 10px 15px;
            }
            .navbar-container {
                flex-direction: column;
                gap: 10px;
                align-items: flex-start;
            }
            .navbar-menu {
                gap: 10px;
                flex-wrap: wrap;
                width: 100%;
            }
            .navbar-menu a {
                font-size: 12px;
            }
            .title-btn-container {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .card-link-btn {
                width: 100%;
                text-align: center;
            }
            .module {
                padding: 15px;
                margin-bottom: 15px;
            }
            .btn {
                width: 100%;
            }
            
            /* ========== 核心修改：手机端历史记录样式 ========== */
            .history-items {
                display: flex;
                flex-wrap: wrap;
                gap: 8px;
                max-height: 150px; /* 固定高度 */
                overflow-y: auto;   /* 垂直滚动 */
                padding-right: 5px; /* 滚动条内边距 */
                flex-direction: row; /* 保持横向排列 */
            }
            .history-item {
                padding: 6px 12px;
                background: #fff;
                border: 1px solid #ddd;
                border-radius: 4px;
                font-size: 13px;
                color: #333;
                cursor: pointer;
                transition: all 0.2s;
                white-space: nowrap;
                text-decoration: none;
                width: auto; /* 重置宽度 */
                margin: 0; /* 重置margin */
                text-align: left; /* 重置对齐方式 */
            }
            
            .result-table {
                font-size: 12px;
            }
            .result-table th, .result-table td {
                padding: 8px 10px;
            }
        }
        /* 表格响应式优化 */
.result-table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed; /* 固定表格布局，防止列宽错乱 */
}
.result-table th, .result-table td {
    padding: 12px 8px; /* 减小内边距 */
    word-wrap: break-word; /* 长文本换行 */
    font-size: 13px;
}
/* 移动端表格横向滚动 */
@media only screen and (max-width: 767px) {
    .result-area {
        overflow-x: auto; /* 横向滚动 */
    }
    .result-table {
        min-width: 600px; /* 保证表格最小宽度 */
    }
}
/* 图2样式 - 核心布局 */
        .traceroute-container { margin-bottom: 24px; }
        .traceroute-top { display: flex; gap: 12px; align-items: center; margin-bottom: 20px; }
        .traceroute-input { flex: 1; padding: 16px 20px; border: 1px solid #e5e7eb; border-radius: 12px; font-size: 16px; background: #fff; }
        .traceroute-btn { padding: 16px 40px; background: #22c55e; color: #fff; border: none; border-radius: 12px; font-size: 18px; cursor: pointer; transition: background 0.3s; }
        .traceroute-btn:hover { background: #16a34a; }
        
        /* 选项区样式 */
        .traceroute-options { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; margin-bottom: 20px; }
        .option-group { display: flex; align-items: center; gap: 12px; }
        .option-group label { font-size: 16px; color: #374151; }
        .node-select { padding: 12px 16px; border: 1px solid #e5e7eb; border-radius: 12px; font-size: 16px; min-width: 280px; }
        .dns-group { display: flex; align-items: center; gap: 16px; }
        .radio-label { display: flex; align-items: center; gap: 8px; cursor: pointer; font-size: 16px; color: #374151; }
        .radio-label input[type="radio"] { width: 20px; height: 20px; accent-color: #2563eb; }
        .dns-input { padding: 12px 16px; border: 1px solid #e5e7eb; border-radius: 12px; font-size: 16px; min-width: 280px; }