:root{--bg:#071516;--panel:#0d2222;--grid:#244242;--mint:#a8ffcf;--hot:#ff6e4a;--text:#eaf5ec;--muted:#8da4a1}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 70% 0,#123231 0,transparent 38%),var(--bg);color:var(--text);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;min-height:100vh}main{width:min(1180px,calc(100% - 40px));margin:auto;padding-bottom:70px}header{height:88px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--grid);font-size:12px}.logo{font:800 20px Arial;display:flex;align-items:center;gap:9px}.logo i{width:13px;height:13px;border-radius:50%;background:var(--mint);box-shadow:0 0 18px var(--mint)}.logo span{color:var(--muted);font:10px monospace;letter-spacing:.18em}.session{color:var(--muted)}.session b{color:var(--text)}.hero{display:grid;grid-template-columns:1fr auto;align-items:end;padding:54px 0 35px}.kicker{font-size:10px;letter-spacing:.2em;color:var(--mint)}h1{font:700 clamp(48px,7.5vw,92px)/.92 Arial,sans-serif;letter-spacing:-.06em;margin:12px 0 24px}h1 span{color:var(--mint)}.copy>p:last-child{max-width:560px;color:var(--muted);line-height:1.7;font-size:13px}.round{display:flex;align-items:baseline;color:var(--muted)}.round span{writing-mode:vertical-lr;font-size:9px;letter-spacing:.16em;margin-right:12px}.round strong{font-size:70px;color:var(--text)}.round small{font-size:14px}.stage{display:grid;grid-template-columns:minmax(0,1fr) 285px;background:var(--panel);border:1px solid var(--grid)}.canvas-wrap{position:relative;min-height:480px;display:grid;place-items:center;background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:36px 36px;overflow:hidden}#field{width:100%;height:100%;display:block;cursor:crosshair}.canvas-wrap #hint{position:absolute;bottom:20px;color:var(--muted);font-size:11px;pointer-events:none;background:var(--bg);padding:7px 10px}aside{border-left:1px solid var(--grid);padding:22px}.readout{border-bottom:1px solid var(--grid);padding:13px 0;display:flex;justify-content:space-between;align-items:baseline}.readout label{font-size:10px;color:var(--muted);letter-spacing:.1em}.readout strong{font:600 23px Arial}.readout.accent strong{color:var(--hot)}button{width:100%;border:0;background:var(--mint);color:#09201b;padding:16px;margin-top:22px;font:800 12px monospace;letter-spacing:.08em;cursor:pointer}button:disabled{opacity:.35;cursor:not-allowed}.secondary{margin-top:9px;background:transparent;color:var(--mint);border:1px solid var(--grid)}#status{font-size:10px;line-height:1.6;color:var(--muted);margin-top:20px}.summary{margin-top:36px;border-top:1px solid var(--grid);padding-top:35px;display:grid;grid-template-columns:1fr auto;gap:20px}.summary[hidden]{display:none}.summary h2{font:700 36px Arial;margin:8px 0}.summary>div>p:last-child{color:var(--muted);font-size:11px}.score{text-align:right}.score span{display:block;font-size:10px;color:var(--muted)}.score strong{font:700 48px Arial;color:var(--mint)}#review{grid-column:1/-1;width:100%;height:260px;background:var(--panel);border:1px solid var(--grid)}#again{grid-column:1/-1;width:200px;margin:0 0 0 auto}@media(max-width:720px){main{width:min(100% - 24px,1180px)}header{height:68px}.session{font-size:9px}.hero{padding-top:35px}.round{display:none}.stage{grid-template-columns:1fr}.canvas-wrap{min-height:330px}aside{border-left:0;border-top:1px solid var(--grid)}.summary{grid-template-columns:1fr}.score{text-align:left}#again{width:100%}}