:root {
            --primary-text: #606266;
            --secondary-text: #909399;
            --border-color: #dcdfe6;
            --bg-color: #ffffff;
            --input-height: 32px;
            --btn-green: #67c23a;
            --btn-green-hover: #85ce61;
            --btn-yellow: #e6a23c;
            --btn-yellow-hover: #ebb563;
        }

        body {
            font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
            background-color: #f0f2f5;
            margin: 0;
            padding: 20px;
            color: var(--primary-text);
            font-size: 14px;
        }

        .container {
            background-color: var(--bg-color);
            padding: 20px;
            border-radius: 4px;
            box-shadow: 0 1px 4px rgba(0,0,0,0.1);
        }

        /* 顶部标题栏 */
        .page-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid #ebeef5;
            padding-bottom: 15px;
            margin-bottom: 20px;
        }

        .page-title {
            font-size: 16px;
            font-weight: bold;
            color: #303133;
        }

        /* 表单网格布局 */
        .search-form {
            display: grid;
            grid-template-columns: repeat(4, 1fr); /* 4列布局，模仿截图 */
            gap: 15px 20px; /* 行间距15px，列间距20px */
        }

        /* 响应式：屏幕变窄变成2列或1列 */
        @media (max-width: 1200px) {
            .search-form { grid-template-columns: repeat(3, 1fr); }
        }
        @media (max-width: 900px) {
            .search-form { grid-template-columns: repeat(2, 1fr); }
        }

        .form-item {
            display: flex;
            align-items: center;
        }

        .form-label {
            width: 90px; /* 固定标签宽度 */
            text-align: right;
            padding-right: 12px;
            flex-shrink: 0;
            color: var(--primary-text);
            font-weight: 500;
        }

        .form-content {
            flex-grow: 1;
            position: relative;
            display: flex;
            align-items: center;
        }

        /* 输入框通用样式 */
        input[type="text"],
        input[type="number"],
        input[type="date"],
        select {
            width: 100%;
            height: var(--input-height);
            border: 1px solid var(--border-color);
            border-radius: 4px;
            padding: 0 10px;
            box-sizing: border-box;
            color: #606266;
            outline: none;
            transition: border-color 0.2s;
        }

        input:focus, select:focus {
            border-color: #409eff;
        }

        input::placeholder {
            color: #c0c4cc;
        }

        /* 时间范围选择器模拟 (Start -> End) */
        .date-range-group {
            display: flex;
            align-items: center;
            width: 100%;
        }
        .date-range-group input {
            width: 45%;
        }
        .date-separator {
            width: 10%;
            text-align: center;
            color: var(--secondary-text);
        }

        /* 按钮区域 */
        .action-bar {
            grid-column: 1 / -1; /* 占满整行 */
            display: flex;
            justify-content: flex-end;
            margin-top: 10px;
            padding-top: 10px;
            border-top: 1px dashed #ebeef5;
            gap: 10px;
        }

        .btn {
            display: inline-flex;
            justify-content: center;
            align-items: center;
            line-height: 1;
            height: 32px;
            white-space: nowrap;
            cursor: pointer;
            border: 1px solid transparent;
            text-align: center;
            box-sizing: border-box;
            outline: none;
            margin: 0;
            transition: .1s;
            font-weight: 500;
            padding: 8px 15px;
            font-size: 14px;
            border-radius: 4px;
            color: #fff;
        }

        .btn-green {
            background-color: var(--btn-green);
            border-color: var(--btn-green);
        }
        .btn-green:hover {
            background-color: var(--btn-green-hover);
            border-color: var(--btn-green-hover);
        }

        .btn-yellow {
            background-color: var(--btn-yellow);
            border-color: var(--btn-yellow);
        }
        .btn-yellow:hover {
            background-color: var(--btn-yellow-hover);
            border-color: var(--btn-yellow-hover);
        }

        /* 模拟收起图标 */
        .collapse-link {
            color: #409eff;
            cursor: pointer;
            font-size: 13px;
            margin-left: 10px;
            text-decoration: none;
        }
        
        /* 弹窗遮罩层 */
        .modal-overlay {
            display: none; /* 默认隐藏 */
            position: fixed;
            top: 0; left: 0;
            width: 100%; height: 100%;
            background-color: rgba(0, 0, 0, 0.5); /* 半透明黑底 */
            z-index: 1000;
            justify-content: center;
            align-items: center;
        }

        /* 弹窗主体 */
        .modal-content {
            background: #fff;
            padding: 20px;
            border-radius: 8px;
            width: 800px; /* 较宽的弹窗 */
            max-width: 90%;
            max-height: 90vh;
            overflow-y: auto; /* 内容过多可滚动 */
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
        }

        .modal-header {
            font-size: 18px;
            font-weight: bold;
            margin-bottom: 20px;
            border-bottom: 1px solid #eee;
            padding-bottom: 10px;
        }

        /* 弹窗内的网格表单 */
        .edit-form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr; /* 两列布局 */
            gap: 15px;
        }

        .edit-form-item label {
            display: block;
            margin-bottom: 5px;
            font-weight: 500;
            color: #606266;
        }

        /* 底部按钮区 */
        .modal-footer {
            margin-top: 20px;
            text-align: right;
            border-top: 1px solid #eee;
            padding-top: 15px;
        }