:root{--fg:#17202a;--muted:#5b6670;--bd:#dde3e8;--bg:#fff;--soft:#f4f7f8;--acc:#0e6b78;--acc2:#0a4f59;--warn:#9a5b00;--code:#0f1b22;--codefg:#e6edf3}
@media (prefers-color-scheme:dark){:root{--fg:#e6edf3;--muted:#9aa7b2;--bd:#2a353d;--bg:#0f161b;--soft:#162027;--acc:#4fb3c0;--acc2:#7cd0db;--warn:#e0a84a;--code:#0a1014}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;color:var(--fg);background:var(--bg)}
.wrap{max-width:960px;margin:0 auto;padding:0 20px}
a{color:var(--acc)}a:hover{color:var(--acc2)}
a:focus-visible{outline:3px solid var(--acc);outline-offset:2px;border-radius:3px}
.top{border-bottom:1px solid var(--bd)}
.top .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 20px;padding-top:14px;padding-bottom:14px}
.brand{font-weight:800;font-size:1.2rem;color:var(--fg);text-decoration:none;letter-spacing:-.01em}.brand span{color:var(--acc)}
nav{display:flex;flex-wrap:wrap;gap:4px 18px}
nav a{color:var(--muted);text-decoration:none;font-size:.95rem}nav a:hover,nav a[aria-current]{color:var(--fg)}nav a[aria-current]{font-weight:600}
main.wrap{padding-top:36px;padding-bottom:56px}
h1{font-size:clamp(1.7rem,4vw,2.4rem);line-height:1.2;letter-spacing:-.02em;margin:0 0 .5em}
h2{font-size:1.3rem;line-height:1.3;margin:1.8em 0 .5em}
.lead{font-size:1.15rem;color:var(--muted);max-width:46em}
.hero{padding:24px 0 12px}.hero h1{max-width:18em}
.cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:24px 0}
.btn{display:inline-block;padding:10px 18px;border:1px solid var(--bd);border-radius:8px;text-decoration:none;color:var(--fg);font-weight:600;background:var(--soft)}
.btn.pri{background:var(--acc);border-color:var(--acc);color:#fff}
@media (prefers-color-scheme:dark){.btn.pri{color:#06191c}}
.btn:hover{border-color:var(--acc)}.btn.pri:hover{background:var(--acc2);color:#fff}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px;margin:28px 0}
.card{display:flex;flex-direction:column;border:1px solid var(--bd);border-radius:12px;padding:20px;text-decoration:none;color:var(--fg);background:var(--bg)}
.card:hover{border-color:var(--acc)}.card h2{margin:0 0 .4em;font-size:1.15rem}.card p{margin:0 0 1em;color:var(--muted);flex:1}.card span{color:var(--acc);font-weight:600}
.prose{max-width:720px}
.prose li{margin:.3em 0}
.crumb{margin:0 0 .5em;font-size:.95rem}
.meta,.note{color:var(--muted);font-size:.9rem}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;font-size:.88em;background:var(--soft);padding:.1em .35em;border-radius:4px}
pre{background:var(--code);color:var(--codefg);padding:14px 16px;border-radius:8px;overflow-x:auto;line-height:1.5}
pre code{background:none;padding:0;color:inherit;font-size:.85rem;word-break:break-all;white-space:pre-wrap}
blockquote{margin:1em 0;padding:.6em 1em;border-left:4px solid var(--acc);background:var(--soft);font-family:Georgia,"Times New Roman",serif}
.box{border:1px solid var(--bd);border-left:4px solid var(--warn);border-radius:8px;padding:4px 16px;background:var(--soft);margin:1.2em 0}
.unc{display:inline-block;font-size:.7rem;font-weight:700;letter-spacing:.04em;color:var(--warn);border:1px solid currentColor;border-radius:4px;padding:0 .4em;vertical-align:.1em;white-space:nowrap}
table{border-collapse:collapse;width:100%;font-size:.95rem;margin:1em 0;display:block;overflow-x:auto}
th,td{border:1px solid var(--bd);padding:8px 10px;text-align:left;vertical-align:top}th{background:var(--soft)}
.list{list-style:none;padding:0;margin:24px 0;max-width:720px}
.list li{padding:16px 0;border-bottom:1px solid var(--bd)}.list li:first-child{border-top:1px solid var(--bd)}
.list a{display:block;text-decoration:none;font-size:1.1rem}.list span{display:block;color:var(--muted);font-size:.95rem;margin-top:4px}
.src{font-size:.92rem;color:var(--muted)}
.foot{border-top:1px solid var(--bd);color:var(--muted);font-size:.88rem}.foot .wrap{padding-top:20px;padding-bottom:28px}.foot p{margin:.4em 0;max-width:60em}