:root{--bg-primary: #ffffff;--bg-secondary: #f7f8fa;--bg-elevated: #ffffff;--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #94a3b8;--border-color: #e2e8f0;--border-strong: #cbd5e1;--accent: #2563eb;--accent-hover: #1d4ed8;--accent-soft: #dbeafe;--success: #16a34a;--warning: #d97706;--danger: #dc2626;--warning-text: #92400e;--danger-text: #b91c1c;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .05);--shadow-md: 0 4px 12px rgba(15, 23, 42, .08);--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--space-7: 48px;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, "Helvetica Neue", sans-serif;--font-size-xs: 12px;--font-size-sm: 13px;--font-size-base: 15px;--font-size-lg: 18px;--font-size-xl: 24px;--sidebar-width: 240px;--sidebar-rail-width: 44px;--header-height: 64px}@media (prefers-color-scheme: dark){:root{--bg-primary: #0b1220;--bg-secondary: #111a2e;--bg-elevated: #131d33;--text-primary: #e2e8f0;--text-secondary: #94a3b8;--text-muted: #64748b;--border-color: #1f2a44;--border-strong: #2c3a5a;--accent-soft: #1e3a8a;--warning-text: #fbbf24;--danger-text: #f87171;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow-md: 0 4px 12px rgba(0, 0, 0, .45)}}*{box-sizing:border-box}[hidden]{display:none!important}html,body{margin:0;padding:0;background:var(--bg-secondary);color:var(--text-primary);font-family:var(--font-sans);font-size:var(--font-size-base);line-height:1.5;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover);text-decoration:underline}h1,h2,h3,h4{margin:0 0 var(--space-3) 0;line-height:1.2}h1{font-size:var(--font-size-xl)}h2{font-size:var(--font-size-lg)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:10px 18px;border-radius:var(--radius-md);font-weight:600;font-size:var(--font-size-base);border:1px solid 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transparent;left:0;z-index:20;display:none;width:max-content;max-width:260px;padding:var(--space-2) var(--space-3);border:1px solid var(--border-color);border-radius:var(--radius-md);background:var(--bg-elevated);box-shadow:var(--shadow-md);color:var(--text-secondary);font-size:var(--font-size-sm);font-weight:400;line-height:1.45;text-transform:none;letter-spacing:normal;white-space:normal}.tip:hover .tip-bubble,.tip:focus-within .tip-bubble{display:block}.tip-trigger[data-tip-dismissed]+.tip-bubble{display:none}.tip{position:static}.tip-bubble{left:var(--space-4);right:var(--space-4);width:auto;max-width:none}