:root{--bg:#f2f4f7;--surface:#fff;--text:#0f172a;--muted:#64748b;--accent:#0f766e}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at top right,#d9f3ef 0,var(--bg) 40%);color:var(--text);font-family:Segoe UI,SF Pro Display,sans-serif}main{max-width:1080px;margin:0 auto;padding:24px}.card{background:var(--surface);border:1px solid #dbe3ed;border-radius:14px;padding:18px;box-shadow:0 10px 24px rgba(15,23,42,.06)}a{color:var(--accent);text-decoration:none}.grid{display:grid;grid-gap:14px;gap:14px}@media (min-width:900px){.grid.cols-3{grid-template-columns:repeat(3,1fr)}}