:root{color-scheme:dark;font-family:Pretendard,Noto Sans KR,Malgun Gothic,system-ui,sans-serif;background:#080b12;color:#f5f7fb;--cyan: #49dbea;--panel: rgba(17, 23, 36, .88);--line: rgba(152, 181, 216, .18)}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:radial-gradient(circle at 18% 12%,rgba(73,219,234,.12),transparent 28rem),radial-gradient(circle at 82% 78%,rgba(187,112,255,.1),transparent 30rem),#080b12}button{font:inherit;color:inherit}.shell{width:min(1180px,100%);margin:auto;padding:28px 20px 40px}.mast{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:22px}.eyebrow,.mono{font-family:ui-monospace,Cascadia Code,Consolas,monospace}.eyebrow{color:var(--cyan);letter-spacing:.16em;font-size:.72rem}h1{margin:4px 0 0;font-size:clamp(2rem,5vw,4.6rem);line-height:.95;letter-spacing:-.055em}.engine{display:flex;align-items:center;gap:9px;color:#aab7ca}.lamp{width:9px;height:9px;border-radius:99px;background:#58df88;box-shadow:0 0 15px #58df88}.game{display:grid;grid-template-columns:minmax(170px,230px) minmax(280px,420px) minmax(180px,260px);gap:18px;align-items:start}.panel{border:1px solid var(--line);background:var(--panel);border-radius:16px;padding:16px;box-shadow:0 20px 50px #00000040}.board-wrap{position:relative;padding:12px}#board{width:100%;aspect-ratio:1/2;display:block;background:#080d16;border-radius:9px}.overlay{position:absolute;inset:12px;display:grid;place-content:center;text-align:center;padding:28px;background:#05080ed1;border-radius:9px;backdrop-filter:blur(5px)}.overlay[hidden]{display:none}.overlay strong{font-size:1.45rem}.stats{display:grid;gap:10px}.seed-control{margin-top:14px;color:#9eabc0;font-size:.78rem}.seed-control>div{display:grid;grid-template-columns:1fr auto;gap:7px;margin-top:6px}.seed-control input,.seed-control button{min-width:0;border:1px solid var(--line);border-radius:8px;background:#0b111d;color:inherit;padding:8px}.stat{padding:13px 14px;border:1px solid var(--line);border-radius:12px;background:#05091073}.stat span{display:block;color:#8f9caf;font-size:.78rem}.stat strong{font:600 1.45rem ui-monospace,Cascadia Code,Consolas,monospace}.preview-title{margin:0 0 8px;color:#9eabc0;font-size:.82rem}.preview{width:100%;aspect-ratio:1;display:block;margin-bottom:12px}.actions{display:grid;gap:9px;margin-top:14px}.action,.touch button{border:1px solid var(--line);background:#151d2c;border-radius:10px;min-height:44px;cursor:pointer}.action.primary{background:var(--cyan);color:#061116;font-weight:700}.touch{margin-top:18px;display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.touch button{min-height:54px;touch-action:none;font-size:.82rem}details{margin-top:18px}pre{white-space:pre-wrap;word-break:break-word;max-height:240px;overflow:auto;color:#9fb0c8;font:.75rem/1.55 ui-monospace,Cascadia Code,Consolas,monospace}.help{color:#98a5b8;font-size:.86rem;line-height:1.7}@media(max-width:820px){.mast{align-items:start;flex-direction:column}.game{grid-template-columns:minmax(0,1fr) minmax(120px,180px)}.left{order:3;grid-column:1 / -1;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.left .stats{grid-column:1 / -1;grid-template-columns:repeat(4,minmax(0,1fr))}.left .seed-control{grid-column:1 / -1;margin-top:0}.actions,.help{grid-column:1 / -1}}@media(max-width:520px){.shell{padding:18px 12px 28px}.game{grid-template-columns:minmax(0,1fr) 108px;gap:9px}.panel{padding:10px;border-radius:12px}.board-wrap{padding:7px}.overlay{inset:7px}.left .stats{grid-template-columns:repeat(2,minmax(0,1fr))}.touch{grid-template-columns:repeat(4,1fr)}.touch button{font-size:.72rem;padding:4px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}