/* ===== BMI页面特有样式 ===== */
        .tool-hero {
            background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
            color: #fff;
            padding: 40px 20px 32px;
            text-align: center;
        }
        .tool-hero h1 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .tool-hero p {
            font-size: 15px;
            opacity: 0.9;
            max-width: 520px;
            margin: 0 auto;
        }

        main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 32px 20px 48px;
        }

        /* 工具主体区域 */
        .tool-main {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-bottom: 32px;
        }

        /* 计算表单 */
        .calc-panel {
            background: #fff;
            border: 1px solid #e5e7eb;
            border-radius: 10px;
            padding: 28px;
        }
        .calc-panel h2 {
            font-size: 18px;
            font-weight: 700;
            color: #1f2937;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: #374151;
            margin-bottom: 6px;
        }
        .form-group input, .form-group select {
            width: 100%;
            padding: 12px 14px;
            border: 1px solid #d1d5db;
            border-radius: 8px;
            font-size: 15px;
            outline: none;
            transition: border-color 0.2s;
        }
        .form-group input:focus, .form-group select:focus {
            border-color: #2563eb;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }
        .calc-btn {
            width: 100%;
            padding: 14px;
            background: #2563eb;
            color: #fff;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            margin-top: 6px;
        }
        .calc-btn:hover { background: #1d4ed8; }

        /* 结果面板 */
        .result-panel {
            background: #fff;
            border: 1px solid #e5e7eb;
            border-radius: 10px;
            padding: 28px;
            display: flex;
            flex-direction: column;
        }
        .result-panel h2 {
            font-size: 18px;
            font-weight: 700;
            color: #1f2937;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .result-empty {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #9ca3af;
            font-size: 14px;
            min-height: 160px;
        }
        .result-content {
            display: none;
        }
        .result-content.active {
            display: block;
        }
        .bmi-number {
            text-align: center;
            margin-bottom: 16px;
        }
        .bmi-number .value {
            font-size: 48px;
            font-weight: 700;
            color: #1f2937;
            line-height: 1.2;
        }
        .bmi-number .label {
            font-size: 14px;
            color: #6b7280;
        }
        .bmi-status {
            text-align: center;
            padding: 10px 20px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .status-thin { background: #fef3c7; color: #92400e; }
        .status-normal { background: #d1fae5; color: #065f46; }
        .status-overweight { background: #fee2e2; color: #991b1b; }
        .status-obese { background: #fecaca; color: #7f1d1d; }

        .ideal-weight {
            background: #f8fafc;
            border: 1px solid #e5e7eb;
            border-radius: 8px;
            padding: 16px;
            margin-bottom: 16px;
        }
        .ideal-weight h4 {
            font-size: 14px;
            font-weight: 600;
            color: #1f2937;
            margin-bottom: 8px;
        }
        .ideal-weight p {
            font-size: 13px;
            color: #4b5563;
            line-height: 1.6;
        }
        .ideal-weight .range {
            font-weight: 700;
            color: #2563eb;
        }

        .result-tips {
            font-size: 13px;
            color: #6b7280;
            line-height: 1.6;
            padding: 12px;
            background: #f9fafb;
            border-radius: 6px;
        }

        /* 知识说明区 */
        .info-section {
            background: #fff;
            border: 1px solid #e5e7eb;
            border-radius: 10px;
            padding: 28px;
            margin-bottom: 24px;
        }
        .info-section h2 {
            font-size: 18px;
            font-weight: 700;
            color: #1f2937;
            margin-bottom: 16px;
        }
        .info-section h3 {
            font-size: 16px;
            font-weight: 600;
            color: #1f2937;
            margin: 20px 0 10px;
        }
        .info-section p {
            font-size: 14px;
            color: #4b5563;
            line-height: 1.8;
            margin-bottom: 10px;
        }
        .info-section ul {
            margin-left: 20px;
            color: #4b5563;
            font-size: 14px;
            line-height: 1.8;
        }
        .info-section ul li {
            margin-bottom: 6px;
        }

        /* BMI标准表格 */
        .bmi-table {
            width: 100%;
            border-collapse: collapse;
            margin: 12px 0;
            font-size: 14px;
        }
        .bmi-table th, .bmi-table td {
            padding: 10px 12px;
            text-align: left;
            border-bottom: 1px solid #e5e7eb;
        }
        .bmi-table th {
            background: #f9fafb;
            font-weight: 600;
            color: #374151;
        }
        .bmi-table td {
            color: #4b5563;
        }
        .tag-thin { color: #92400e; font-weight: 500; }
        .tag-normal { color: #065f46; font-weight: 500; }
        .tag-overweight { color: #991b1b; font-weight: 500; }
        .tag-obese { color: #7f1d1d; font-weight: 500; }

        /* 相关工具推荐 */
        .related-tools {
            background: #fff;
            border: 1px solid #e5e7eb;
            border-radius: 10px;
            padding: 24px;
            margin-bottom: 24px;
        }
        .related-tools h2 {
            font-size: 17px;
            font-weight: 700;
            color: #1f2937;
            margin-bottom: 16px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 12px;
        }
        .related-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 14px;
            background: #f8fafc;
            border: 1px solid #e5e7eb;
            border-radius: 8px;
            font-size: 14px;
            color: #374151;
            transition: all 0.2s;
        }
        .related-item:hover {
            background: #eff6ff;
            border-color: #3b82f6;
            color: #2563eb;
            text-decoration: none;
        }
        .related-item .icon {
            font-size: 20px;
        }

        /* 移动端 */
        @media (max-width: 768px) {
            .tool-hero { padding: 32px 16px 24px; }
            .tool-hero h1 { font-size: 22px; }
            .tool-hero p { font-size: 14px; }
            .tool-main { grid-template-columns: 1fr; }
            .calc-panel, .result-panel { padding: 20px; }
            .form-row { grid-template-columns: 1fr; }
            .bmi-number .value { font-size: 40px; }
            .related-grid { grid-template-columns: 1fr; }
        }

        /* ===== 日历查询结果样式 ===== */
.calendar-result {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.result-row {
    display: flex;
    align-items: center;
    padding: 10px 14px;
    background: #f8fafc;
    border-radius: 6px;
    border-left: 3px solid #e5e7eb;
    transition: all 0.2s;
}
.result-row.highlight {
    background: #eff6ff;
    border-left-color: #2563eb;
}
.result-row.holiday {
    background: #fef2f2;
    border-left-color: #ef4444;
}
.result-label {
    font-size: 13px;
    color: #6b7280;
    width: 72px;
    flex-shrink: 0;
    font-weight: 500;
}
.result-value {
    font-size: 15px;
    color: #1f2937;
    font-weight: 600;
}