:root{--fg:#1a1a1a;--muted:#6b6b6b;--bg:#fdfdfb;--line:#e4e4df;--accent:#0b5cad;--card:#f4f4ef;--ok:#1b7f3b;--warn:#b0641b;--band:rgba(11,92,173,.12)}
@media (prefers-color-scheme:dark){:root{--fg:#e8e8e3;--muted:#9a9a94;--bg:#111210;--line:#2a2b27;--accent:#7fb3ff;--card:#1a1b18;--ok:#5fd08a;--warn:#e6a35c;--band:rgba(127,179,255,.16)}}
*{box-sizing:border-box}
html{font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;color:var(--fg);background:var(--bg)}
body{margin:0}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
main{max-width:42rem;margin:0 auto;padding:1.5rem 1.25rem 4rem}
main.wide{max-width:72rem}
.nav{max-width:72rem;margin:0 auto;padding:1rem 1.25rem;display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px solid var(--line)}
.nav .brand{font-weight:600;color:var(--fg)}
.nav nav a{margin-left:1.1rem;color:var(--muted)}
.nav nav a:hover{color:var(--accent)}
footer{max-width:72rem;margin:0 auto;padding:1.5rem 1.25rem;border-top:1px solid var(--line);color:var(--muted);font-size:.9rem;display:flex;gap:1.5rem;flex-wrap:wrap}
h1{font-size:1.7rem;line-height:1.25;margin:.5rem 0 1rem}
h2{font-size:1.25rem;margin:2rem 0 .6rem}
h3{font-size:1.05rem;margin:0 0 .3rem}
p.meta,.desc{color:var(--muted)}
.intro p{font-size:1.15rem}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));gap:1rem;margin:1.5rem 0}
.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:1rem 1.1rem;color:var(--fg)}
.card:hover{text-decoration:none;border-color:var(--accent)}
.card p{margin:.2rem 0 .6rem;color:var(--muted);font-size:.95rem}
.tag{font-size:.75rem;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}
.tag.live::before{content:"●";color:var(--ok);margin-right:.35rem}
.postlist{list-style:none;padding:0}.postlist li{margin:.4rem 0}.postlist time{color:var(--muted);font-variant-numeric:tabular-nums;margin-right:.6rem}
code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em}
pre{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:.9rem 1rem;overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:.92rem;margin:1rem 0}
th,td{text-align:left;padding:.4rem .6rem;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--muted);font-weight:600}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
blockquote{margin:1rem 0;padding:.2rem 1rem;border-left:3px solid var(--line);color:var(--muted)}
/* sentinel */
.controls{display:flex;gap:1rem;flex-wrap:wrap;align-items:end;margin:1rem 0 .5rem}
.controls label{display:flex;flex-direction:column;font-size:.85rem;color:var(--muted)}
.controls input,.controls select{font:inherit;padding:.3rem .5rem;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--fg)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(20rem,1fr));gap:1rem}
.panel{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:.8rem .9rem}
.panel h3{font-size:.95rem;margin:0 0 .2rem;font-family:ui-monospace,Menlo,monospace;font-weight:600}
.panel .sub{font-size:.8rem;color:var(--muted);margin:0 0 .4rem}
.panel svg{width:100%;height:120px;display:block}
.panel .kv{display:flex;gap:1rem;font-size:.82rem;color:var(--muted);flex-wrap:wrap}
.panel .kv b{color:var(--fg);font-weight:600}
.step{font-size:.82rem;margin-top:.4rem}
.step.hi{color:var(--warn)}
.note{font-size:.85rem;color:var(--muted)}
.status{font-size:.9rem;color:var(--muted);margin:.2rem 0 1rem}