*,:after,:before{box-sizing:border-box}:root{--bg:#f4f7fa;--surface:#ffffff;--border:#e2e8f0;--text:#1a1a2e;--text-muted:#64748b;--accent:#00b4ff;--accent-dark:#0097a7;--accent-soft:#e8f7ff;--danger:#dc2626;--radius:12px;--shadow:0 4px 24px rgba(0,0,0,0.06)}body,html{margin:0;padding:0;min-height:100%;font-family:Lexend,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text)}button,input,textarea{font:inherit}a{color:var(--accent-dark)}