:root{--bg:#f5f5f7;--surface:#fff;--text:#1d1d1f;--text-2:#6e6e73;--text-3:#86868b;--sep:rgba(60,60,67,.18);--accent:#0071e3;--fill:rgba(118,118,128,.12);--mono:ui-monospace,"SF Mono",SFMono-Regular,"Geist Mono Variable",Menlo,Consolas,monospace;--ui:-apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","Inter Variable",system-ui,"Segoe UI",Roboto,Arial,sans-serif;color-scheme:light}
@media(prefers-color-scheme:dark){:root{--bg:#000;--surface:#1c1c1e;--text:#f5f5f7;--text-2:#a1a1a6;--text-3:#86868b;--sep:rgba(84,84,88,.6);--accent:#2997ff;--fill:rgba(118,118,128,.24);color-scheme:dark}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:400 17px/1.55 var(--ui);letter-spacing:-.011em;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:3px}
header.site{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:12px 24px;border-bottom:.5px solid var(--sep);background:color-mix(in srgb,var(--bg) 80%,transparent);position:sticky;top:0;backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px)}
header.site a.brand{color:var(--text);font-weight:600;letter-spacing:-.02em}header.site nav{display:flex;gap:18px;font-size:.92rem}
main{max-width:760px;margin:0 auto;padding:48px 24px 96px}
h1{font-size:clamp(2rem,5vw,3rem);line-height:1.08;letter-spacing:-.035em;font-weight:700;margin:0 0 16px;text-wrap:balance}
h2{font-size:1.5rem;letter-spacing:-.025em;margin:44px 0 10px;line-height:1.2}h3{font-size:1.1rem;margin:22px 0 6px}
p{margin:0 0 14px;color:var(--text-2)}.lead{font-size:1.25rem;line-height:1.42;color:var(--text-2);margin-bottom:26px}
.crumbs{font-size:.85rem;color:var(--text-3);margin-bottom:18px}.crumbs a{color:var(--text-3)}
.cta{display:inline-block;margin:6px 0 4px;padding:11px 24px;border-radius:980px;background:var(--accent);color:#fff;font-weight:500}.cta:hover{text-decoration:none;filter:brightness(1.08)}
pre{margin:14px 0 22px;padding:16px 18px;overflow:auto;border-radius:14px;background:var(--surface);color:var(--text);font:400 13px/1.6 var(--mono);letter-spacing:0;white-space:pre-wrap;overflow-wrap:anywhere;box-shadow:0 0 0 .5px var(--sep)}
ul.list{list-style:none;margin:0 0 18px;padding:0;background:var(--surface);border-radius:14px;overflow:hidden}ul.list li{padding:12px 18px;border-top:.5px solid var(--sep);color:var(--text-2)}ul.list li:first-child{border-top:0}ul.list strong{color:var(--text);font-weight:600}
ul.plain{margin:0 0 18px;padding-left:20px;color:var(--text-2)}ul.plain li{margin:6px 0}
details{background:var(--surface);border-radius:14px;padding:14px 18px;margin:8px 0}summary{cursor:pointer;font-weight:600;color:var(--text)}details p{margin:10px 0 0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;list-style:none;margin:0 0 18px;padding:0}.grid a{display:block;height:100%;padding:16px;border-radius:16px;background:var(--surface);color:var(--text);font-weight:600}.grid a:hover{text-decoration:none;box-shadow:0 0 0 .5px var(--sep),0 12px 28px rgba(0,0,0,.08)}.grid span{display:block;margin-top:4px;color:var(--text-2);font-weight:400;font-size:.9rem}
footer.site{max-width:760px;margin:0 auto;padding:0 24px 56px;color:var(--text-3);font-size:.88rem}