:root {
  color-scheme: dark;
  --bg:#08090b;
  --surface:#111318;
  --text:#f4f4f5;
  --muted:#a2a7b0;
  --line:#272a31;
  --accent:#b9b5ff;
  --accent-bg:#1b1a2e;
  --max:1040px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}
a{color:var(--accent)}
a:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.wrap{width:min(var(--max),calc(100% - 40px));margin:auto}
.nav{border-bottom:1px solid var(--line);background:#08090b}
.nav-in{min-height:66px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{color:var(--text);text-decoration:none;font-weight:800;letter-spacing:-.03em;font-size:20px}
.nav-links{display:flex;gap:18px;flex-wrap:wrap;font-size:14px}
.nav-links a{text-decoration:none;color:var(--muted)}
.hero{padding:78px 0 54px}
.kicker{display:inline-block;padding:6px 10px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
h1{max-width:850px;margin:18px 0;font-size:clamp(38px,6vw,64px);line-height:1.02;letter-spacing:-.05em}
.hero p{max-width:760px;color:var(--muted);font-size:19px}
.cta{display:inline-flex;margin-top:16px;padding:12px 17px;border-radius:10px;background:#f4f4f5;color:#111318;text-decoration:none;font-weight:800}
main{padding-bottom:60px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:25px 0 50px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px}
.card h2{margin-top:0}.card p,.muted{color:var(--muted)}
article{max-width:820px}article h2{font-size:27px;margin-top:52px;line-height:1.2}article h3{font-size:19px;margin-top:30px}
ul{padding-left:20px}li{margin:8px 0}
.note{padding:16px 18px;background:var(--accent-bg);border-left:3px solid var(--accent);border-radius:8px;margin:25px 0}
details{border-top:1px solid var(--line);padding:18px 0}summary{cursor:pointer;font-weight:750}
.footer{border-top:1px solid var(--line);padding:30px 0 50px;color:var(--muted);font-size:13px}.footer a{margin-right:14px}
.breadcrumbs{font-size:13px;color:var(--muted);padding-top:22px}
@media(max-width:800px){.grid{grid-template-columns:1fr}.nav-in{align-items:flex-start;padding:14px 0;flex-direction:column}.hero{padding-top:55px}}