* {
            box-sizing: border-box;
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
        }
        .conversion-container {
            max-width: 1200px;
            margin: 20px auto;
            padding: 0 10px;
        }
        h2 {
            margin-bottom: 10px;
            font-size: 20px;
        }
        .instruction {
            font-size: 14px;
            color: #666;
            margin-bottom: 20px;
            line-height: 1.5;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            table-layout: fixed;
            margin-bottom: 20px; /* 表格和按钮之间留间距 */
        }
        th, td {
            padding: 10px 8px;
            text-align: left;
            border-bottom: 1px solid #ddd;
            vertical-align: middle;
        }
        th {
            font-weight: bold;
            border-top: 2px solid #000;
            background-color: #f8f8f8;
            font-size: 14px;
        }
        .input-wrap {
            display: flex;
            align-items: center;
            gap: 4px;
            width: 100%;
        }
        input[type="number"] {
            width: 70px;
            padding: 5px;
            border: 1px solid #ccc;
            border-radius: 3px;
            font-size: 13px;
            outline: none;
        }
        input[type="number"]:focus {
            border-color: #66afe9;
        }
        .unit {
            font-size: 12px;
            color: #333;
            white-space: nowrap;
        }
        .remove-btn {
            background-color: #ff9f43;
            border: none;
            padding: 9px 20px;
            color: #fff;
            border-radius: 4px;
            cursor: pointer;
            margin-bottom: 30px; /* 按钮和说明文字之间留间距 */
            font-size: 14px;
            transition: background-color 0.2s;
        }
        .remove-btn:hover {
            background-color: #ff8c00;
        }
        /* 新增说明文字样式 */
        .conversion-desc {
            border-top: 1px solid #eee;
            padding-top: 25px;
            font-size: 14px;
            line-height: 1.6;
            color: #333;
        }
        .conversion-desc h3 {
            font-size: 16px;
            margin: 20px 0 10px;
            color: #222;
            font-weight: bold;
        }
        .conversion-desc h3:first-child {
            margin-top: 0;
        }
        .conversion-desc p {
            margin-bottom: 12px;
        }
        /* 列宽控制 */
        th:nth-child(1), td:nth-child(1) { width: 15%; }
        th:nth-child(2), td:nth-child(2) { width: 15%; }
        th:nth-child(3), td:nth-child(3) { width: 15%; }
        th:nth-child(4), td:nth-child(4) { width: 15%; }
        th:nth-child(5), td:nth-child(5) { width: 15%; }
        th:nth-child(6), td:nth-child(6) { width: 15%; }