*{box-sizing:border-box}
:root{--paper:#f6efe6;--ink:#2b1d14;--muted:#8a7768;--line:#e7d9c6;--gold:#c89a2e;--panel:#fffaf1;--shadow:rgba(43,29,20,.12)}
@media(prefers-color-scheme:dark){
  :root{--paper:#1b140f;--ink:#f6efe6;--muted:#b8a898;--line:#3a2a1c;--panel:#241a12;--shadow:rgba(0,0,0,.4)}
}
html,body{margin:0;min-height:100vh}
body{
  background:
    radial-gradient(900px 500px at 20% 0%, rgba(200,154,46,.10), transparent 60%),
    radial-gradient(800px 600px at 90% 100%, rgba(120,80,30,.08), transparent 60%),
    var(--paper);
  color:var(--ink);
  font-family: ui-sans-system, system-ui, -apple-system, Segoe UI, Roboto, Inter, sans-serif;
  display:flex;flex-direction:column;
}
.back{margin:18px 24px 0;color:var(--muted);text-decoration:none;font-size:14px}
.back:hover{color:var(--ink)}
.head{max-width:1100px;width:100%;margin:0 auto;padding:8px 24px 0}
.eyebrow{letter-spacing:.14em;text-transform:uppercase;font-size:12px;color:var(--gold);margin:0 0 6px}
h1{margin:0;font-size:42px;letter-spacing:-.02em;line-height:1;font-weight:800}
.lede{color:var(--muted);max-width:60ch;line-height:1.55;margin:10px 0 0}
.layout{
  max-width:1100px;width:100%;margin:0 auto;
  display:grid;grid-template-columns:320px 1fr;
  gap:20px; padding:20px 24px 28px; flex:1;
}
.controls{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:16px;
  padding:16px;
  box-shadow:0 10px 30px var(--shadow);
  align-self:start;
  position:sticky; top:16px;
}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px}
.stats div{border:1px solid var(--line);border-radius:12px;padding:10px}
.stats span{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);display:block}
.stats strong{font-size:18px}
.status{font-size:14px;color:#8a5a1a;min-height:22px;margin:6px 0 10px}
@media(prefers-color-scheme:dark){.status{color:#f0c070}}
.btns{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:12px}
button{
  border:1px solid var(--line);
  background:var(--paper);
  color:var(--ink);
  padding:9px 12px;border-radius:10px;
  font:600 14px/1 system-ui; cursor:pointer;
}
button:hover{border-color:var(--gold)}
button:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
button.ghost{background:transparent}
.hint{font-size:13px;color:var(--muted);line-height:1.5;margin:6px 0 0}
.hint kbd{
  border:1px solid var(--line);border-bottom-width:2px;
  background:var(--panel);padding:1px 6px;border-radius:6px;font-size:12px;color:var(--ink)
}
.dim{opacity:.85}
.stage{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:16px;
  padding:10px;
  box-shadow:0 10px 30px var(--shadow);
  display:grid;place-items:center;
}
#board{width:100%;height:auto;max-width:860px;aspect-ratio:860/560;display:block;border-radius:12px;background:linear-gradient(180deg, #fbf6ee, #efe3cc);border:1px solid var(--line)}
@media(prefers-color-scheme:dark){#board{background:linear-gradient(180deg, #2a1b0f, #1b120c)}}
.foot{
  display:flex;justify-content:space-between;gap:12px;
  padding:14px 24px 20px;color:var(--muted);font-size:13px;
  border-top:1px solid var(--line);max-width:1100px;width:100%;margin:0 auto;
}
.foot a{color:var(--muted);text-decoration:none}
.foot a:hover{color:var(--ink)}
@media(max-width:860px){
  .layout{grid-template-columns:1fr}
  .controls{position:static}
  h1{font-size:34px}
}
@media(prefers-reduced-motion:reduce){*{animation:none !important;transition:none !important}}