:root{--bg:#f8fafc;--fg:#0f172a;--mut:#64748b;--card:#fff;--line:#e2e8f0;--acc:#4f46e5;--acc2:#0ea5e9;--band:#eef2ff}
@media(prefers-color-scheme:dark){:root{--bg:#0b1020;--fg:#e5e7eb;--mut:#94a3b8;--card:#111936;--line:#1f2a4d;--acc:#818cf8;--acc2:#38bdf8;--band:#101936}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--fg)}
a{color:var(--acc);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}.narrow{max-width:720px}.center{text-align:center}
.top{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:60px;position:relative}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--fg);font-size:18px}.brand:hover{text-decoration:none}
nav{display:flex;gap:22px}nav a{color:var(--mut);font-size:15px}nav a.on,nav a:hover{color:var(--fg);text-decoration:none}
.mn-t,.mn-b{display:none}
h1{font-size:clamp(28px,5vw,46px);line-height:1.15;margin:.2em 0 .5em;letter-spacing:-.02em}
h2{font-size:clamp(22px,3.4vw,30px);margin:0 0 .7em;letter-spacing:-.01em}h3{margin:0 0 .35em;font-size:18px}
.hero{padding:72px 0 56px;background:radial-gradient(900px 300px at 15% -10%,color-mix(in srgb,var(--acc2) 22%,transparent),transparent),radial-gradient(700px 300px at 90% 0,color-mix(in srgb,var(--acc) 22%,transparent),transparent)}
.kicker{color:var(--acc);font-weight:600;letter-spacing:.06em;text-transform:uppercase;font-size:13px;margin:0}
.lead{font-size:clamp(17px,2.2vw,20px);color:var(--mut);max-width:680px}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.btn{display:inline-block;background:linear-gradient(135deg,var(--acc2),var(--acc));color:#fff;border:0;border-radius:10px;padding:12px 20px;font:inherit;font-weight:600;cursor:pointer}
.btn:hover{text-decoration:none;filter:brightness(1.08)}.btn.ghost{background:transparent;color:var(--fg);border:1px solid var(--line)}
.block{padding:48px 20px}.band{background:var(--band);padding:40px 0;margin:16px 0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px}.card p{margin:0;color:var(--mut)}
.card .tag{display:inline-block;font-size:12px;color:var(--acc);border:1px solid var(--line);border-radius:999px;padding:2px 10px;margin-bottom:10px}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px}
.steps b{display:inline-grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--acc);color:#fff;margin-bottom:8px}.steps p{margin:0;color:var(--mut)}
.more{margin-top:18px}.muted{color:var(--mut)}
.list{padding-left:20px}.list li{margin:.4em 0}
.form{display:grid;gap:14px;margin-top:20px}.form label{display:grid;gap:6px;font-size:14px;color:var(--mut)}
.form input,.form textarea{font:inherit;color:var(--fg);background:var(--card);border:1px solid var(--line);border-radius:10px;padding:11px 12px;width:100%}
.form input:focus,.form textarea:focus{outline:2px solid var(--acc);border-color:transparent}
.status{margin:0;min-height:1.4em}.status.ok{color:#16a34a}.status.err{color:#dc2626}
footer{border-top:1px solid var(--line);margin-top:40px;padding:28px 0 20px;color:var(--mut);font-size:14px}
.foot{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}.foot p{margin:.3em 0 0}
.links{display:flex;gap:16px;flex-wrap:wrap}.links a{color:var(--mut)}
.note{margin-top:18px;font-size:13px}
@media(max-width:720px){
 .mn-b{display:grid;gap:5px;cursor:pointer;padding:10px}.mn-b i{display:block;width:22px;height:2px;background:var(--fg);border-radius:2px}
 nav{display:none;position:absolute;top:60px;left:0;right:0;flex-direction:column;gap:0;background:var(--bg);border-bottom:1px solid var(--line);padding:6px 20px 12px}
 nav a{padding:12px 0;border-bottom:1px solid var(--line)}.mn-t:checked~nav{display:flex}
 .hero{padding:48px 0 36px}.block{padding:34px 20px}
}