:root{color-scheme:light;--bg:#ffffff;--surface:#fff;--ink:#1b1b22;--muted:#5c5c6b;--line:#e3e3ea;--brand:#050d80;--tint:#eceefe;--accent:#2547e8;--code:#f1f1f6;--note:#fff7e0;--note-line:#f0c75a;--shadow:0 1px 2px rgba(10,10,40,.06),0 8px 24px rgba(10,10,40,.06)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-text-size-adjust:100%}
a{color:var(--accent)}img{max-width:100%;height:auto}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:var(--surface);padding:8px 12px;z-index:100}
.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:12px;height:60px;padding:0 16px;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);text-decoration:none;white-space:nowrap}.brand em{font-style:normal;color:var(--muted);font-weight:600}
.burger{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:10px;width:40px;height:40px;font-size:18px;cursor:pointer}
.burger{display:none}
.search{position:relative;flex:1;max-width:460px;margin-left:auto}
.search input{width:100%;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink);padding:0 14px;font:inherit;font-size:15px}
#results{position:absolute;left:0;right:0;top:46px;background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);max-height:70vh;overflow:auto}
#results[hidden]{display:none}
#results a{display:block;padding:10px 14px;text-decoration:none;color:var(--ink);border-bottom:1px solid var(--line)}#results a:last-child{border:0}
#results a:hover{background:var(--tint)}#results span{display:block;font-size:13px;color:var(--muted);line-height:1.4}#results p{margin:0;padding:14px;color:var(--muted)}
.layout{display:grid;grid-template-columns:280px minmax(0,1fr) 220px;max-width:1380px;margin:0 auto}
.side{position:sticky;top:60px;align-self:start;height:calc(100vh - 60px);overflow:auto;padding:20px 12px 40px 16px;border-right:1px solid var(--line)}
.side a{display:flex;gap:10px;align-items:baseline;padding:7px 10px;border-radius:10px;color:var(--muted);text-decoration:none;font-size:14.5px;line-height:1.35}
.side a:hover{background:var(--tint);color:var(--ink)}.side a.on{background:var(--tint);color:var(--brand);font-weight:700}
.side .num{min-width:1.6em;font-variant-numeric:tabular-nums;opacity:.7}
main{padding:36px 40px 60px;min-width:0}article{max-width:780px;margin:0 auto}
.toc{position:sticky;top:76px;align-self:start;padding:36px 16px;font-size:13.5px;display:flex;flex-direction:column;gap:6px}
.toc b{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-size:11px;margin-bottom:4px}.toc a{color:var(--muted);text-decoration:none}.toc a:hover{color:var(--accent)}
h1{font-size:2.1rem;line-height:1.2;margin:0 0 .6em;letter-spacing:-.02em}
.chapter{display:block;font-size:.8rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:6px}
h2{font-size:1.45rem;margin:2.2em 0 .6em;letter-spacing:-.01em}h3{font-size:1.15rem;margin:1.8em 0 .5em}
.anchor{margin-left:-1.1em;padding-right:.4em;opacity:0;text-decoration:none;font-weight:400}h2:hover .anchor,h3:hover .anchor{opacity:.5}
.lead{font-size:1.15rem;color:var(--muted)}
p,li{max-width:70ch}li{margin:.3em 0}
code{background:var(--code);padding:.1em .4em;border-radius:6px;font:.88em ui-monospace,SFMono-Regular,Menlo,monospace}
pre{background:var(--code);padding:14px 16px;border-radius:12px;overflow:auto}pre code{background:none;padding:0}
.table-wrap{overflow:auto;margin:1em 0;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:.95rem}th,td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}th{background:var(--tint);font-size:.85rem}tr:last-child td{border:0}
.note{margin:1.4em 0;padding:4px 18px;background:var(--note);border-left:4px solid var(--note-line);border-radius:10px}
figure{margin:1.4em 0;text-align:center}figure img{border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);background:var(--surface);max-height:640px;width:auto}
figcaption{font-size:.85rem;color:var(--muted);margin-top:8px}
.shots{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:flex-start;margin:1.4em 0}.shots figure{margin:0;flex:0 1 260px}.shots figure img{max-height:520px}
.zoom{cursor:zoom-in}
.lightbox{position:fixed;inset:0;z-index:50;background:rgba(5,5,20,.86);display:flex;align-items:center;justify-content:center;padding:20px;cursor:zoom-out}.lightbox[hidden]{display:none}.lightbox img{max-height:100%;max-width:100%;border-radius:12px;background:#fff}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px;margin:1em 0}
.card{display:flex;gap:12px;align-items:center;padding:14px 16px;background:var(--surface);border:1px solid var(--line);border-radius:14px;text-decoration:none;color:var(--ink);transition:transform .12s,box-shadow .12s}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.card .num{flex:none;width:32px;height:32px;border-radius:10px;background:var(--tint);color:var(--brand);display:grid;place-items:center;font-weight:800;font-size:14px}
.steps li{margin:.5em 0}
.pager{display:flex;justify-content:space-between;gap:12px;max-width:780px;margin:48px auto 0}
.pager a{flex:1;max-width:48%;padding:14px 16px;border:1px solid var(--line);border-radius:14px;background:var(--surface);text-decoration:none;color:var(--ink);font-weight:700}
.pager a small{display:block;color:var(--muted);font-weight:500}.pager .next{text-align:right}.pager a:hover{border-color:var(--accent)}
footer{max-width:780px;margin:32px auto 0;color:var(--muted);font-size:.85rem}
@media (max-width:1180px){.layout{grid-template-columns:260px minmax(0,1fr)}.toc{display:none}}
@media (max-width:860px){
 .burger{display:block}.brand em{display:none}.layout{display:block}
 .side{position:fixed;left:0;top:60px;bottom:0;width:min(86vw,320px);height:auto;z-index:15;background:var(--bg);transform:translateX(-102%);transition:transform .2s;box-shadow:var(--shadow)}
 .side.open{transform:none}
 main{padding:24px 16px 48px}h1{font-size:1.7rem}.anchor{display:none}
 .shots figure{flex-basis:44%}.pager a{max-width:none}
}
@media print{.top,.side,.toc,.pager{display:none}.layout{display:block}}