:root{--bg: #f6f7f9;--surface: #ffffff;--text: #1a1d23;--muted: #5c6470;--border: #e2e5eb;--primary: #2563eb;--primary-hover: #1d4ed8;--danger: #dc2626;--danger-hover: #b91c1c;--radius: 8px;--shadow: 0 1px 2px rgba(0, 0, 0, .06)}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button{font:inherit;cursor:pointer}input,textarea{font:inherit}