:root{--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;--bg: #ffffff;--bg-soft: #f7f8fa;--bg-panel: #fbfcfd;--bg-hover: #eef1f6;--bg-active: #e2e9f3;--bg-overlay: rgba(15, 22, 36, .4);--fg: #1a2233;--fg-muted: #5b6678;--fg-subtle: #8a93a3;--fg-inverse: #ffffff;--border: #e3e7ee;--border-strong: #c8d0dd;--accent: #2d6cdf;--accent-soft: #e6efff;--danger: #d24b4b;--success: #2f8a4f;--shadow-sm: 0 1px 2px rgba(15, 22, 36, .06);--shadow-md: 0 4px 14px rgba(15, 22, 36, .08);--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--radius-sm: 4px;--radius: 6px;--radius-lg: 10px;--text-xs: 11px;--text-sm: 13px;--text-base: 14px;--text-md: 15px;--text-lg: 18px;--text-xl: 22px;--header-h: 48px;--sidebar-w: 280px}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%;background:var(--bg);color:var(--fg);font-family:var(--font-sans);font-size:var(--text-base);line-height:1.5;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}body{overflow:hidden}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button{font-family:inherit;font-size:inherit;cursor:pointer}input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}:focus-visible{outline:2px solid var(--accent);outline-offset:1px;border-radius:2px}