:root{color:#1f2d2e;background:linear-gradient(160deg,#f8f3e7,#e8f5f4);font-family:Trebuchet MS,Segoe UI,sans-serif}body{margin:0}.shell{max-width:1100px;margin:0 auto;padding:40px 20px}header h1{margin:0;font-size:2.2rem}.grid{margin-top:28px;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.card{background:#fff;border-radius:16px;padding:18px;border:1px solid #dce8e8}button{border:0;border-radius:999px;background:#0f3d3e;color:#f7f4e8;padding:10px 14px}