:root{color-scheme:light;--primary: #2563eb;--primary-strong: #1d4ed8;--surface: #ffffff;--surface-muted: #f4f7fb;--surface-active: #eef5ff;--text: #14213d;--text-muted: #64748b;--border: #dbe3ef;--danger: #b42318;--danger-soft: #fee4e2;--success: #0f9f6e;--warning: #f59e0b;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);--shadow-lg: 0 20px 45px rgba(15, 23, 42, .14)}:root.dark{color-scheme:dark;--primary: #60a5fa;--primary-strong: #93c5fd;--surface: #111827;--surface-muted: #0b1220;--surface-active: #172033;--text: #e5e7eb;--text-muted: #9ca3af;--border: #263348;--danger: #f87171;--danger-soft: #3f1f23;--success: #34d399;--warning: #fbbf24}*{box-sizing:border-box}html,body{margin:0;min-height:100%}body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--surface-muted);color:var(--text);letter-spacing:0}button,input,textarea,select{font:inherit}code{font-family:Cascadia Code,SFMono-Regular,Consolas,monospace}.notice{padding:12px 14px;border-radius:8px;border:1px solid var(--border);background:var(--surface);font-weight:700}.notice.error{background:var(--danger-soft);border-color:transparent;color:var(--danger)}