/* MedRoundTable 统一主题 - 医学蓝配色 */
:root {
    --primary: #1e40af;
    --primary-dark: #1e3a8a;
    --primary-light: #3b82f6;
    --secondary: #0f172a;
    --accent: #06b6d4;
    --surface: #f8fafc;
    --surface-elevated: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --nejm-blue: #003366;
    --lancet-red: #bf1e2e;
    --jama-blue: #004793;
    --natmed-purple: #6b4c9a;
    --bmj-blue: #2e5c8a;
}
* { -webkit-tap-highlight-color: transparent; box-sizing: border-box; }
body {
    font-family: 'Inter','Noto Sans SC',-apple-system,BlinkMacSystemFont,sans-serif;
    touch-action: manipulation;
    background: var(--surface);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
    margin: 0;
    padding: 0;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
.btn-primary {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff; border-radius: 16px; font-weight: 600;
    box-shadow: var(--shadow-lg); border: none; cursor: pointer;
    transition: all 0.2s; font-size: 16px;
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.15); }
.card {
    background: var(--surface-elevated);
    border-radius: 20px; padding: 24px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}
.sidebar { background: var(--secondary); }
.sidebar a, .sidebar button { color: #e2e8f0; }
.sidebar a:hover, .sidebar button:hover { background: rgba(255,255,255,0.08); }
.header-bar {
    background: var(--surface-elevated);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    display: flex; align-items: center; gap: 16px;
    position: sticky; top: 0; z-index: 30;
}