*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:#f8fafc;color:#0f172a}
.top{background:#fff;border-bottom:1px solid #e2e8f0;padding:14px 16px;display:flex;justify-content:space-between}
.brand{font-weight:800;text-decoration:none;color:inherit}.nav a{margin-left:10px;color:#64748b;text-decoration:none;font-size:.85rem}
.sheet{max-width:920px;margin:0 auto;padding:18px 16px 40px}.heroimg{height:220px;border-radius:14px;background:linear-gradient(135deg,#94a3b8,#e2e8f0);margin-bottom:14px}
.facts{display:grid;gap:10px;margin:14px 0}@media(min-width:700px){.facts{grid-template-columns:repeat(4,1fr)}}
.fact{background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:12px}.btn{display:inline-block;background:#0284c7;color:#fff!important;text-decoration:none;padding:11px 16px;border-radius:8px;font-weight:700}
footer{padding:16px;color:#64748b;font-size:.85rem}