:root{color-scheme:dark;--bg:#0d141c;--panel:#151f2a;--line:#263544;--muted:#9aabba;--text:#eef3f7;--accent:#78d6c6}
*{box-sizing:border-box}
body{margin:0;background:radial-gradient(ellipse at 50% -20%,#1d3440 0,transparent 48%),var(--bg);color:var(--text);font:16px/1.6 "Segoe UI",system-ui,sans-serif;min-height:100vh;display:flex;flex-direction:column}
.topbar{height:68px;border-bottom:1px solid #ffffff12;display:flex;align-items:center;justify-content:space-between;padding:0 max(20px,calc((100vw - 860px)/2))}
.brand{display:flex;align-items:center;gap:11px;color:var(--text);text-decoration:none;font-size:13px;letter-spacing:.18em;font-weight:700}
.brand-mark{display:grid;place-items:center;width:33px;height:33px;border:1px solid var(--accent);border-radius:50%;color:var(--accent);font-family:Georgia,serif;font-size:20px;letter-spacing:0}
nav a{color:var(--muted);text-decoration:none;font-size:14px;margin-left:18px}
nav a:hover,nav a[aria-current]{color:var(--text)}
main{flex:1;width:100%;max-width:760px;margin:56px auto 72px;padding:0 20px}
.eyebrow{font-size:11px;letter-spacing:.19em;color:var(--accent);font-weight:700;margin:0 0 10px;text-transform:uppercase}
h1{font-size:clamp(30px,5vw,44px);letter-spacing:-.03em;line-height:1.15;margin:0 0 16px}
h2{font-size:19px;margin:36px 0 8px}
p,li{color:#d7e1e7}
.lead{font-size:18px;color:var(--muted);max-width:620px}
.card{background:linear-gradient(145deg,#182430,#141d27);border:1px solid var(--line);border-radius:11px;padding:18px 22px;margin:26px 0}
.card p{margin:0}
ul{padding-left:22px}
li{margin:4px 0}
a{color:var(--accent)}
code{background:#0d151d;border:1px solid #ffffff10;border-radius:5px;padding:1px 6px;font-size:14px}
footer{text-align:center;color:#71818f;border-top:1px solid #ffffff10;padding:18px;font-size:13px}
@media(max-width:560px){.topbar{padding:0 16px}nav a{margin-left:12px}main{margin-top:36px}}