:root{color-scheme:light}*{box-sizing:border-box}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:#f5f7fb;color:#1f2937}a{color:inherit;text-decoration:none}.container{max-width:980px;margin:0 auto;padding:24px}.card{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:18px}.grid{display:grid;grid-gap:16px;gap:16px}.grid.two{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}button,input,select,textarea{width:100%;padding:10px 12px;border-radius:8px;border:1px solid #d1d5db;margin-top:6px}button{background:#0f172a;color:#fff;font-weight:600;cursor:pointer}