:root{
  --bg:#0b0f14;--line:#1e2a36;--ink:#eaf1f7;--muted:#8ba0b3;--accent:#4fd1c5;--accent-2:#7c9cff;--radius:16px;
}
*{box-sizing:border-box}
html,body{margin:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:
    radial-gradient(1100px 600px at 80% -10%, rgba(124,156,255,.14), transparent 60%),
    radial-gradient(900px 500px at 0% 110%, rgba(79,209,197,.12), transparent 55%),
    var(--bg);
  color:var(--ink);min-height:100vh;padding:48px 24px;line-height:1.65;
}
.wrap{max-width:720px;margin:0 auto}
.back{display:inline-flex;align-items:center;gap:8px;color:var(--muted);text-decoration:none;font-size:14px;margin-bottom:28px;transition:color .2s}
.back:hover{color:var(--ink)}
h1{font-size:clamp(26px,5vw,38px);letter-spacing:-.02em;margin:0 0 8px}
.sub{color:var(--muted);margin:0 0 36px;font-size:15px}
h2{font-size:19px;margin:34px 0 10px;color:var(--ink)}
p,li{color:#c6d3df;font-size:15px}
.card{background:linear-gradient(180deg, rgba(255,255,255,.03), transparent);border:1px solid var(--line);border-radius:var(--radius);padding:14px 20px;margin:16px 0}
.placeholder{color:var(--accent);font-weight:600}
a.inline{color:var(--accent-2);text-decoration:none;border-bottom:1px solid transparent}
a.inline:hover{border-color:var(--accent-2)}
footer{max-width:720px;margin:48px auto 0;padding-top:22px;border-top:1px solid var(--line);color:var(--muted);font-size:13px;display:flex;gap:18px;flex-wrap:wrap}
footer a{color:var(--muted);text-decoration:none}
footer a:hover{color:var(--ink)}