:root { color-scheme: dark; --bg: #0f172a; --panel: #162033; --text: #f8fafc; --muted: #cbd5e1; --line: #334155; --accent: #38d9d2; }
* { box-sizing: border-box; }
body { margin: 0; font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: radial-gradient(circle at 85% 0%, rgba(56,217,210,.18), transparent 28%), var(--bg); color: var(--text); line-height: 1.62; }
a { color: var(--accent); }
header { border-bottom: 1px solid var(--line); background: rgba(15,23,42,.86); position: sticky; top: 0; backdrop-filter: blur(12px); }
.nav { max-width: 980px; margin: 0 auto; padding: 18px 22px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 900; letter-spacing: .08em; color: var(--accent); }
.brand img { width: 42px; height: 42px; border-radius: 11px; }
nav { display: flex; gap: 18px; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; font-weight: 700; font-size: 14px; }
main { max-width: 980px; margin: 0 auto; padding: 54px 22px 72px; }
.card { background: rgba(22,32,51,.82); border: 1px solid var(--line); border-radius: 20px; padding: 34px; box-shadow: 0 20px 60px rgba(0,0,0,.24); }
h1 { font-size: clamp(34px, 5vw, 58px); line-height: 1.02; margin: 0 0 12px; letter-spacing: 0; }
h2 { margin-top: 34px; padding-top: 24px; border-top: 1px solid var(--line); font-size: 24px; }
h3 { margin-top: 26px; font-size: 20px; }
p, li { color: var(--muted); font-size: 16px; }
ul { padding-left: 22px; }
code { color: var(--accent); background: rgba(56,217,210,.1); padding: 2px 5px; border-radius: 6px; }
.footer { color: #94a3b8; font-size: 13px; margin-top: 28px; }
@media (max-width: 720px) { .nav { align-items: flex-start; flex-direction: column; } .card { padding: 24px; } nav { gap: 12px; } }