:root{
  --bg:#12151a;--card:#1b1f26;--card2:#232830;--border:#2a2f38;
  --text:#f2f1ee;--muted:#9aa1ab;--faint:#6b7280;
  --accent:#e8542c;--green:#22c55e;--red:#ef4444;--amber:#f5a524;--blue:#3fa9f5;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);
  font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
a{color:var(--blue)}
.wrap{max-width:900px;margin:0 auto;padding:0 16px}
.top{position:sticky;top:0;z-index:5;background:rgba(18,21,26,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:56px;flex-wrap:wrap;padding-top:6px;padding-bottom:6px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;font-weight:700}
.brand img{border-radius:8px}
.langs{display:flex;flex-wrap:wrap;gap:4px}
.langs a{color:var(--muted);text-decoration:none;font-size:14px;padding:4px 10px;border-radius:999px;border:1px solid transparent}
.langs a:hover{color:var(--text);border-color:var(--border)}
.langs a.on{color:var(--text);border-color:var(--accent)}
figure{margin:20px 0}
figure img{display:block;width:100%;height:auto;border-radius:12px;border:1px solid var(--border)}
.hero{padding:20px 0 4px}
.hero h1{font-size:30px;line-height:1.2;margin:18px 0 6px}
.lead{color:var(--muted);font-size:17px;margin:0 0 16px}
.play{display:inline-block;background:var(--accent);color:#12151a;font-weight:700;text-decoration:none;padding:11px 20px;border-radius:999px}
.play:hover{filter:brightness(1.08)}
.toc{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0 8px;padding:14px;background:var(--card);border:1px solid var(--border);border-radius:12px}
.toc a{color:var(--text);text-decoration:none;font-size:14px;padding:4px 10px;border-radius:999px;background:var(--card2)}
.toc a:hover{background:var(--border)}
section{padding-top:18px;scroll-margin-top:72px}
h2{font-size:23px;line-height:1.3;margin:22px 0 10px;padding-left:12px;border-left:4px solid var(--accent)}
h3{font-size:18px;margin:22px 0 8px}
p,li{margin:8px 0}
ul,ol{padding-left:22px}
b{color:#fff}
code{background:var(--card2);border:1px solid var(--border);border-radius:6px;padding:1px 6px;font-size:.92em}
.small{color:var(--muted);font-size:14.5px}
ol.steps{list-style:none;padding:0;counter-reset:s}
ol.steps>li{counter-increment:s;position:relative;padding:12px 14px 12px 54px;margin:10px 0;background:var(--card);border:1px solid var(--border);border-radius:10px}
ol.steps>li::before{content:counter(s);position:absolute;left:14px;top:12px;width:26px;height:26px;border-radius:50%;
  background:var(--accent);color:#12151a;font-weight:800;font-size:14px;display:flex;align-items:center;justify-content:center}
.tbl{overflow-x:auto;border:1px solid var(--border);border-radius:10px}
table{border-collapse:collapse;width:100%;font-size:14.5px}
th,td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--border);vertical-align:top}
th{background:var(--card2);color:var(--muted);font-weight:600}
tr:last-child td{border-bottom:0}
td.num{white-space:nowrap;color:var(--muted)}
ul.legend{list-style:none;padding:0;display:grid;gap:8px}
ul.legend li{display:flex;gap:12px;align-items:flex-start;margin:0;background:var(--card);border:1px solid var(--border);border-radius:10px;padding:10px 12px}
.sw{flex:0 0 8px;align-self:stretch;border-radius:4px}
.sw.ok{background:var(--green)}.sw.bad{background:var(--red)}.sw.warn{background:var(--amber)}
.c-ok{color:var(--green)}.c-bad{color:var(--red)}.c-warn{color:var(--amber)}
b.c-ok,b.c-bad,b.c-warn{color:inherit}
b.c-ok{color:var(--green)}b.c-bad{color:var(--red)}b.c-warn{color:var(--amber)}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px}
.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:14px 16px}
.card p{color:var(--muted);margin:6px 0 0}
.badge{display:inline-block;font-size:13px;color:var(--amber);border:1px solid var(--amber);border-radius:999px;padding:1px 10px;margin-bottom:4px}
details{background:var(--card);border:1px solid var(--border);border-radius:10px;margin:8px 0;padding:0 14px}
summary{cursor:pointer;font-weight:600;padding:12px 0;list-style-position:outside}
details p{color:var(--muted)}
.note{background:rgba(245,165,36,.08);border:1px solid rgba(245,165,36,.4);border-radius:12px;padding:4px 16px}
.cta{text-align:center;padding:24px 0 8px}
footer{border-top:1px solid var(--border);margin-top:24px;padding:20px 0;color:var(--muted);font-size:14px}
footer p{margin:4px 0}
.muted{color:var(--faint)}
.picker{text-align:center;padding-top:15vh}
.picker img{border-radius:20px}
.langs.big{justify-content:center;gap:10px;margin-top:20px}
.langs.big a{font-size:17px;border-color:var(--border);padding:10px 18px;color:var(--text)}
@media (max-width:520px){
  body{font-size:15.5px}
  .hero h1{font-size:26px}
  ol.steps>li{padding-left:48px}
  ol.steps>li::before{left:12px}
  .tbl{border:0;overflow:visible}
  table,tbody,tr,td{display:block;width:100%}
  thead{display:none}
  tr{background:var(--card);border:1px solid var(--border);border-radius:10px;margin:8px 0;padding:10px 12px}
  td{border:0;padding:2px 0}
  td[data-l]::before{content:attr(data-l) ": ";color:var(--faint);font-size:13px}
  td.num{white-space:normal}
}
@media print{.top,.toc,.play,.cta{display:none}body{background:#fff;color:#000}}