*{box-sizing:border-box}
:root{
  --bg:#12060a; --panel:#1d0b12; --line:#3a1522;
  --ink:#ffe9de; --muted:#c48a86; --accent:#ff9a3c;
}
html{background:var(--bg)}
body{
  margin:0; min-height:100vh;
  background:radial-gradient(1000px 700px at 60% -10%,rgba(255,120,40,.14),transparent 55%),linear-gradient(180deg,#1a0a10,var(--bg));
  color:var(--ink); font-family:ui-sans-serif,system-ui,-apple-system,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:1000px;width:100%;margin:0 auto;padding:8px 24px 0}
.eyebrow{letter-spacing:.14em;text-transform:uppercase;font-size:12px;color:var(--accent);margin:0 0 6px}
h1{margin:0;font-size:44px;letter-spacing:-.02em;line-height:1;background:linear-gradient(90deg,#fff,#ffd9a0 45%,#ff7a3c);-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{color:var(--muted);max-width:66ch;line-height:1.5;margin:10px 0 0}
.layout{max-width:1000px;width:100%;margin:0 auto;padding:20px 24px 28px;flex:1;display:grid;gap:16px}
.controls{
  background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:12px;display:flex;gap:10px;align-items:center;flex-wrap:wrap;
  box-shadow:0 10px 30px rgba(0,0,0,.4);
}
button{
  border:1px solid var(--line);background:#2a1118;color:var(--ink);
  padding:9px 14px;border-radius:10px;font:600 13px/1 system-ui;cursor:pointer;
}
button:hover{border-color:var(--accent)}
button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
button.ghost{background:transparent}
button kbd{opacity:.55;font-size:10px;margin-left:4px}
.stats{font:12px 'DM Mono',monospace;color:var(--ink);margin:0}
.stats b,.stats span{color:var(--accent)}
.hint{flex:1;min-width:200px;font-size:12px;color:var(--muted);margin:0;text-align:right}
.stage-wrap{position:relative}
canvas{
  width:100%;height:470px;display:block;background:#0b0407;
  border:1px solid var(--line);border-radius:14px;touch-action:none;cursor:crosshair;
}
.overlay{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  text-align:center;background:radial-gradient(circle at 50% 50%,rgba(20,8,10,.55),rgba(8,3,5,.92) 70%);
  border-radius:14px;padding:20px;
}
.overlay h2{margin:0;font-size:40px;letter-spacing:-.04em}
.overlay p{max-width:44ch;color:var(--muted);margin:0;font-size:14px;line-height:1.5}
.overlay.hidden{display:none}
.overlay button{margin-top:10px;font-size:15px;padding:12px 22px;border-color:var(--accent);background:#3a1611;box-shadow:0 0 22px rgba(255,120,40,.35)}
.overlay button kbd{opacity:.5}
.readout{
  background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:12px 14px;font-size:14px;color:var(--ink);min-height:42px;line-height:1.4;
}
.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:1000px;width:100%;margin:0 auto;
}
.foot a{color:var(--muted);text-decoration:none}
.foot a:hover{color:var(--ink)}
@media(max-width:700px){
  h1{font-size:34px}
  canvas{height:340px}
  .hint{text-align:left}
}
button{min-height:44px}
button:disabled{opacity:.45;cursor:default}
a:focus-visible,canvas:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
.stats{padding:9px 12px;border-left:2px solid var(--accent);font-variant-numeric:tabular-nums}
.hint{line-height:1.6;text-align:left;flex-basis:100%}
.stage-wrap::after{content:"hold left to turn  /  hold right to turn";position:absolute;bottom:12px;left:0;right:0;text-align:center;pointer-events:none;color:var(--muted);font:11px monospace}
.stage-wrap:has(.overlay:not(.hidden))::after{display:none}
@media(max-width:700px){
  .head{padding-inline:16px}.layout{padding:14px 16px 22px;gap:12px}
  .lede{font-size:14px}.controls{gap:8px}.stats{font-size:11px}
  .overlay h2{font-size:32px}.foot{flex-wrap:wrap}
  canvas{height:clamp(300px,48svh,420px)}
}
@media(prefers-reduced-motion:reduce){.overlay button{box-shadow:none}}