:root{--color-bg:#fff;--color-surface:#f7f7f8;--color-border:#e2e2e6;--color-text:#1a1a1e;--color-text-muted:#6b6b74;--color-primary:#2f5fdb;--color-primary-text:#fff;--color-danger:#c53030;--color-danger-surface:#fdecec;--radius:8px;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-6:24px}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,sans-serif;color:var(--color-text);background:var(--color-bg)}.screen{min-height:100dvh;padding:var(--space-4);max-width:640px;margin:0 auto}a{color:var(--color-primary)}