:root {
  color-scheme: dark;
  --bg: #071014;
  --surface: #0d171d;
  --surface-2: #122129;
  --text: #f4f7f8;
  --muted: #9cabaf;
  --accent: #35e4c0;
  --border: rgba(255,255,255,.09);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top right, rgba(20,148,176,.22), transparent 32%), var(--bg);
  color: var(--text);
  line-height: 1.6;
}
a { color: var(--accent); }
.wrapper { width: min(920px, calc(100% - 40px)); margin: 0 auto; }
header { padding: 28px 0; border-bottom: 1px solid var(--border); }
.brand { display:flex; align-items:center; gap:12px; text-decoration:none; color:var(--text); font-weight:800; letter-spacing:.08em; }
.mark { width:38px; height:38px; border-radius:12px; display:grid; place-items:center; color:#04100d; background:linear-gradient(135deg,#35e4c0,#3eb6ff); font-weight:900; }
nav { margin-left:auto; display:flex; gap:18px; }
.header-row { display:flex; align-items:center; gap:20px; }
nav a { color:var(--muted); text-decoration:none; font-size:.95rem; }
main { padding: 64px 0 80px; }
.hero { padding: 48px 0 54px; }
h1 { font-size: clamp(2.4rem, 7vw, 4.8rem); line-height:1.02; margin:0 0 18px; letter-spacing:-.045em; }
h2 { margin-top:44px; font-size:1.55rem; }
h3 { margin-top:28px; }
p, li { color: var(--muted); }
.lead { font-size:1.22rem; max-width:680px; }
.card { background:linear-gradient(180deg, rgba(18,33,41,.96), rgba(10,20,25,.96)); border:1px solid var(--border); border-radius:24px; padding:24px; margin:22px 0; }
.button { display:inline-block; padding:12px 18px; border-radius:999px; background:var(--accent); color:#04100d; font-weight:750; text-decoration:none; margin-right:10px; }
.secondary { background:var(--surface-2); color:var(--text); border:1px solid var(--border); }
.small { font-size:.9rem; }
footer { border-top:1px solid var(--border); padding:28px 0 44px; color:var(--muted); font-size:.9rem; }
code { color:var(--text); }
@media (max-width:640px){ nav{display:none;} main{padding-top:34px;} .wrapper{width:min(100% - 28px,920px);} }