* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

header {
    background: linear-gradient(135deg, #4a6cf7, #6a82fb);
    color: white;
    padding: 2rem;
    border-radius: 10px;
    margin-bottom: 2rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

h1, h2, h3 {
    margin-bottom: 1rem;
}

.card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-box {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: #4a6cf7;
    margin: 0.5rem 0;
}

.stat-label {
    color: #6c757d;
    font-size: 0.9rem;
}

.status-indicator {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 8px;
}

.status-ok {
    background-color: #28a745;
}

.status-error {
    background-color: #dc3545;
}

.chart-container {
    height: 300px;
    margin: 1rem 0;
}

.tabs {
    display: flex;
    margin-bottom: 1rem;
    border-bottom: 1px solid #dee2e6;
}

.tab {
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    border-bottom: 3px solid transparent;
}

.tab.active {
    border-bottom-color: #4a6cf7;
    color: #4a6cf7;
    font-weight: 600;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.loading {
    text-align: center;
    padding: 2rem;
    color: #6c757d;
}

.error {
    background-color: #f8d7da;
    color: #721c24;
    padding: 1rem;
    border-radius: 5px;
    margin: 1rem 0;
}

.refresh-info {
    text-align: right;
    color: #ffffff;
    font-size: 0.9rem;
    margin-top: 10px;
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    body {
        padding: 10px;
    }
}

.header-content {
    display: flex;
    align-items: center;
    gap: 10px; /* 💡 控制h1和版本号之间的间距 */
}
.header-content h1 {
    margin: 0;
}
.header-content h2 {
    margin: 0;
    font-size: 1.2rem;
    color: #e8e8e8;
}