*{box-sizing:border-box} :root{color-scheme:dark;--ink:#e9f1f4;--dim:#aebfc7;--aqua:#81efd3;--line:#2b414d}body{margin:0;background:#0b141c;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",Meiryo,sans-serif;line-height:1.75}a{color:var(--aqua);text-underline-offset:4px}button,a{touch-action:manipulation}button{font:inherit;cursor:pointer}button:disabled{opacity:.4;cursor:default}button:focus-visible,a:focus-visible,canvas:focus-visible{outline:3px solid #ffd367;outline-offset:4px}header,main,footer{width:min(1200px,calc(100% - 40px));margin:auto}header{display:flex;justify-content:space-between;padding:20px 0;border-bottom:1px solid var(--line);font-size:.9rem}header a{text-decoration:none}.heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:28px}.eyebrow{font-size:.72rem;letter-spacing:.18em;color:var(--aqua);font-weight:700}h1{font-size:clamp(1.5rem,3vw,2.15rem);margin:3px 0 0;line-height:1.4}h1 span{font-weight:400}.intro{color:var(--dim);margin:10px 0 22px}.help-link{white-space:nowrap;font-size:.9rem}#game{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#060b10}#game-frame{position:relative;width:100%;aspect-ratio:8/5;background:#050a10}canvas{display:block;width:100%;height:100%;outline:0}.overlay{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:24px;background:linear-gradient(140deg,rgba(8,24,35,.92),rgba(7,16,24,.94)),url('preview.jpg') center/cover}.overlay[hidden]{display:none}.overlay h2{font-size:clamp(1.2rem,2.4vw,2rem);margin:12px 0}.overlay p{color:var(--dim);margin:10px 0 20px}#launch,#retry{background:var(--aqua);color:#0c2926;border:0;padding:13px 44px;border-radius:6px;font-weight:800;min-height:50px}#launch:hover,#retry:hover{background:#b1ffe9}.small{font-size:.83rem;color:var(--dim)}.toolbar{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:12px 18px;font-size:.82rem;color:var(--dim);background:#101e28}#fullscreen{white-space:nowrap;background:#1d3342;color:var(--ink);border:1px solid #3b5260;border-radius:5px;min-height:36px;padding:3px 16px}progress{width:min(360px,80%);height:12px;accent-color:var(--aqua)}.info{display:grid;grid-template-columns:1.15fr 1fr;gap:48px;margin:48px 0 60px;scroll-margin-top:20px}.info h2{margin:5px 0 14px;font-size:1.4rem}.info h3{margin-top:30px}.info p,.info li{color:var(--dim);font-size:.92rem}.info ol{padding-left:22px}.info li{padding:0 0 13px 5px}table{border-collapse:collapse;width:100%;font-size:.9rem}th,td{padding:12px 10px;border-bottom:1px solid var(--line);text-align:left}thead{color:var(--aqua);font-size:.8rem}tbody th{font-weight:500;width:42%}td{color:var(--dim)}footer{border-top:1px solid var(--line);padding:22px 0;color:var(--dim);font-size:.8rem;display:flex;justify-content:space-between;gap:12px}#game-frame:fullscreen{width:100vw;height:100vh;display:grid;place-items:center;background:#000}#game-frame:fullscreen canvas{width:min(100vw,160vh);height:min(100vh,62.5vw)}@media(min-width:900px){#game{width:min(100%,calc((100vh - 110px)*1.6));margin-inline:auto}}@media(max-width:700px){header,main,footer{width:calc(100% - 24px)}.heading{align-items:flex-start}.heading h1 span{display:block}.info{grid-template-columns:1fr;gap:24px}.overlay{padding:12px}.overlay p{font-size:.8rem;margin:6px 0 10px}#launch{padding:8px 24px}.toolbar{padding:10px;font-size:.75rem}.help-link{font-size:.8rem}footer{flex-wrap:wrap}}

.toolbar span{min-width:0;overflow-wrap:anywhere}