* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft YaHei", sans-serif;
        }

        body {
            background-color: #f5f7fa;
            padding: 20px;
        }

        .query-card {
            max-width: 1000px;
            margin: 50px auto;
            background: #fff;
            padding: 40px 30px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }

        .query-title {
            font-size: 26px;
            color: #2c3e50;
            margin-bottom: 8px;
            text-align: center;
        }

        .query-subtitle {
            font-size: 15px;
            color: #7f8c8d;
            margin-bottom: 20px;
            text-align: center;
        }

        .tips-title {
            font-size: 13px;
            color: #666;
            margin-bottom: 10px;
        }

        #codeInput {
            width: 100%;
            height: 120px;
            padding: 15px;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-size: 14px;
            resize: vertical;
            margin-bottom: 15px;
            outline: none;
        }

        #codeInput:focus {
            border-color: #2d8cf0;
        }

        .btn-group {
            display: flex;
            gap: 10px;
            margin-bottom: 30px;
            flex-wrap: wrap;
        }

        .btn {
            padding: 12px 24px;
            border: none;
            border-radius: 6px;
            font-size: 15px;
            cursor: pointer;
            transition: all 0.3s;
        }

        .btn-query {
            background: #2d8cf0;
            color: #fff;
        }

        .btn-query:hover {
            background: #1b79e0;
        }

        .btn-clear {
            background: #f5f7fa;
            color: #666;
        }

        /* 包裹样式 */
        .package {
            border: 1px solid #eee;
            border-radius: 8px;
            padding: 20px;
            margin-bottom: 20px;
            background: #fafbfc;
        }

        .package-header {
            font-weight: bold;
            color: #2d8cf0;
            margin-bottom: 15px;
            font-size: 16px;
        }

        .info-table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 15px;
            font-size: 14px;
        }

        .info-table td {
            padding: 8px 5px;
            border-bottom: 1px dashed #eee;
        }

        .info-table td:first-child {
            width: 120px;
            color: #666;
        }

        .track-box {
            border-left: 2px solid #2d8cf0;
            padding-left: 20px;
            margin-left: 5px;
        }

        .track-item {
            position: relative;
            padding: 12px 0;
        }

        .track-item::before {
            content: "";
            width: 8px;
            height: 8px;
            background: #2d8cf0;
            border-radius: 50%;
            position: absolute;
            left: -25px;
            top: 16px;
        }

        .track-date {
            color: #2d8cf0;
            font-weight: bold;
            margin-bottom: 4px;
        }

        .track-location {
            font-size: 12px;
            color: #888;
        }

        .track-content {
            margin-top: 4px;
        }

        .loading {
            text-align: center;
            color: #2d8cf0;
            padding: 20px;
        }

        .empty {
            text-align: center;
            color: #999;
            padding: 20px;
        }

        .error {
            color: #f56c6c;
            padding: 10px 0;
        }