:root { --bg:#f2f6f7; --panel:#fff; --fg:#10222a; --muted:#5d7079; --line:#dbe4e7; --brand:#0e9f8e; --dark:#0e2a35; }
@media (prefers-color-scheme: dark) { :root { --bg:#0b171c; --panel:#12232a; --fg:#e3eef1; --muted:#93a8b0; --line:#23383f; --brand:#5eead4; } }
* { box-sizing:border-box; }
[hidden] { display:none !important; }
body { margin:0; background:var(--bg); color:var(--fg); font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif; }
a { color:var(--brand); }
.top { background:var(--dark); padding:14px 16px; display:flex; justify-content:space-between; align-items:center; }
.brand { color:#fff; text-decoration:none; font-weight:800; font-size:20px; display:flex; gap:10px; align-items:center; }
.tabs a { color:#c4d7dc; text-decoration:none; font-weight:700; padding:4px 10px; border-radius:999px; margin-left:4px; }
.tabs a.on { background:#5eead4; color:#062a2f; }
main { max-width:960px; margin:0 auto; padding:0 16px 40px; }
.hero { padding:48px 0 28px; }
.hero h1 { font-size:clamp(28px,5vw,42px); line-height:1.15; margin:0 0 14px; }
.hero p { font-size:18px; color:var(--muted); max-width:680px; }
.btn { display:inline-block; padding:10px 18px; border-radius:10px; background:var(--brand); color:#fff; font-weight:700; text-decoration:none; }
.btn.disabled { background:var(--line); color:var(--muted); }
.grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); gap:14px; margin-bottom:14px; }
.card { background:var(--panel); border:1px solid var(--line); border-radius:14px; padding:18px; }
.card h3 { margin:0 0 6px; font-size:17px; } .card p { margin:0; color:var(--muted); font-size:15px; }
.prem { background:linear-gradient(135deg, rgba(94,234,212,.16), rgba(255,200,61,.10)); }
.prem h2 { margin:0 0 6px; font-size:20px; }
footer { margin-top:32px; font-size:14px; } .muted { color:var(--muted); font-size:13px; }