@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700&display=swap');
:root{color-scheme:dark;--bg:#0b111a;--panel:#0e1722;--line:#263542;--mint:#60fbd5;--red:#ff677f;--text:#eaf1f5;--muted:#9aaab8;font-family:'Noto Sans JP',sans-serif;color:var(--text);background:var(--bg);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button{font:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}button:disabled{opacity:.4;cursor:default}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,canvas:focus-visible{outline:3px solid var(--mint);outline-offset:4px}[hidden]{display:none!important}::selection{color:var(--bg);background:var(--mint)}
.masthead{max-width:1360px;margin:auto;padding:24px 4%;display:flex;align-items:center;gap:28px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:0;font:700 25px 'Space Grotesk',sans-serif;letter-spacing:-1px}.brand>span{color:#8d9cac;font-weight:400}.brand small{font-size:12px;font-weight:500;letter-spacing:0;margin-left:12px;color:var(--mint);border:1px solid #367663;border-radius:3px;padding:3px 6px}.edition{color:var(--muted);font-size:13px}.header-actions{margin-left:auto;display:flex;gap:22px}.header-actions button{background:none;border:0;color:#c1ccd5;min-height:36px;padding:4px 0;font-size:13px}.header-actions button:hover{color:var(--mint)}main{max-width:1360px;margin:auto;padding:21px 4% 25px}.topline{display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;margin-bottom:14px}.topline p{margin:0;color:#b9c9d2;letter-spacing:.03em}.topline>span{font:500 13px 'Space Grotesk','Noto Sans JP',sans-serif;color:#7b919d}.game-shell{display:grid;grid-template-columns:minmax(0,1fr) 282px;border:1px solid #334552;background:var(--panel);border-radius:6px;overflow:hidden}.arena-panel{min-width:0;border-right:1px solid #334552;display:flex;flex-direction:column}.arena-header{height:62px;display:flex;justify-content:space-between;align-items:center;padding:0 28px;border-bottom:1px solid var(--line);gap:20px;background:#0f1b27}.round-label{display:flex;gap:7px;align-items:baseline;font-family:'Space Grotesk','Noto Sans JP',sans-serif}.round-label>span{font-size:27px;font-weight:600}.round-label small{font-size:12px;color:#8099a7}.keys{display:flex;align-items:center;gap:9px;color:var(--mint)}.keys strong{font:500 18px 'Space Grotesk',sans-serif}.key-dot{font-size:28px;line-height:1}.time{display:flex;align-items:baseline;gap:7px;font-variant-numeric:tabular-nums}.time strong{font:500 30px 'Space Grotesk',sans-serif;letter-spacing:-1px}.time span{font-size:12px;color:var(--muted)}.time.urgent{color:var(--red)}.arena{width:100%;aspect-ratio:1;min-height:530px;position:relative;overflow:hidden;background:#0c1722;isolation:isolate}#field{position:absolute;left:0;top:50%;transform:translateY(-50%);width:100%;height:auto;aspect-ratio:1;touch-action:none;user-select:none;-webkit-user-select:none;display:block}.overlay{position:absolute;inset:0;display:grid;place-items:center;z-index:3;background:radial-gradient(ellipse at center,#0a1624f2 25%,#0c1722c2 74%,#0c172266);overflow:auto;padding:28px 24px}.overlay[hidden]{display:none}.screen{text-align:center;width:min(100%,460px);margin:auto}.eyebrow{font:500 12px 'Space Grotesk','Noto Sans JP',sans-serif;letter-spacing:.16em;color:#99afb9;margin:0 0 23px}.screen h1{font-size:clamp(39px,4.65vw,65px);font-weight:900;line-height:1.27;letter-spacing:-.055em;margin:0 0 25px}.screen h1 em{color:var(--red);font-style:normal}.intro-lead{font-size:18px;line-height:1.85;margin:0 0 27px;color:#bccdd6}.intro-rules{display:grid;grid-template-columns:1fr 1fr;gap:13px 16px;font-size:13px;margin:0 auto 28px;max-width:330px;text-align:left}.intro-rules>span{display:flex;align-items:center;gap:8px}.intro-rules>span:last-child{grid-column:1/-1;justify-content:center}.intro-rules i{width:11px;height:11px;display:inline-block;flex:none}.legend-current{border:2px solid var(--mint);border-radius:50%;background:var(--mint)}.legend-light{border:2px solid var(--mint);transform:rotate(45deg)}.legend-past{border:2px solid var(--red);border-radius:50%;background:var(--red)}.primary-button{border:1px solid var(--mint);background:var(--mint);color:#071512;border-radius:3px;min-height:56px;width:100%;display:flex;align-items:center;justify-content:center;gap:24px;padding:14px 20px;font-size:16px;font-weight:800;line-height:1.5;transition:background .15s,transform .15s}.primary-button:hover{background:#a3ffe8;transform:translateY(-2px)}.primary-button:active{transform:translateY(1px)}.primary-button>span{font-size:23px;line-height:1}.intro-footnote{font-size:12px;line-height:1.7;color:#7f99a6;margin:18px 0 0}.arena-footer{min-height:73px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 24px;border-top:1px solid var(--line);background:#0f1b27}.arena-footer p{margin:0;color:#bacad3;font-size:14px;line-height:1.8}.lives{display:flex;gap:6px;flex:none}.lives>span{display:block;width:13px;height:13px;border-radius:3px;background:var(--mint);box-shadow:0 0 10px #60fbd520}.lives>span.empty{background:none;border:1px solid #445967;box-shadow:none}.round-track{display:flex;border-top:1px solid var(--line);height:34px}.round-track>span{flex:1;display:grid;place-items:center;font:500 12px 'Space Grotesk',sans-serif;color:#6c8896;border-right:1px solid #26354255}.round-track>span:last-child{border-right:0}.round-track>span.current{color:var(--mint);background:#60fbd50d}.round-track>span.done{color:#0b111a;background:#60fbd5b0}.round-track>span.failed{color:var(--red);background:#ff677f19}.side-panel{padding:27px 23px 23px;display:flex;flex-direction:column;gap:24px;background:#0d1620;min-width:0}.score-block{border-bottom:1px solid var(--line);padding-bottom:25px}.score-block h2{margin:0;font-size:13px;font-weight:500;color:#b8cbd6}.score-block p{font:500 60px 'Space Grotesk',sans-serif;letter-spacing:-3px;line-height:1.1;margin:10px 0 5px;font-variant-numeric:tabular-nums}.score-block>span{font:500 12px 'Space Grotesk',sans-serif;letter-spacing:.1em;color:#6f8997}.memory-heading{display:flex;justify-content:space-between;align-items:center;gap:10px}.memory-heading h2{font-size:14px;font-weight:600;margin:0}.memory-heading>span{font-size:12px;color:var(--red)}.memories{display:flex;flex-direction:column;gap:10px;margin-top:-9px}.memory-empty{padding:25px 6px 27px;text-align:center;border:1px dashed #304451}.memory-empty>span{font-size:35px;color:#426272}.memory-empty p{font-size:13px;margin:12px 0 7px;color:#aec1ce}.memory-empty small{font-size:12px;line-height:1.7;color:#6f8a99;display:block}.memory-card{display:grid;grid-template-columns:minmax(0,1fr) 79px;gap:7px;align-items:center;padding:10px 12px;border:1px solid #4d3444;background:#ff677f05;border-radius:3px}.memory-card strong{font-size:12px;font-weight:600;display:block;color:#ff9dae;margin-bottom:5px}.memory-card small{font-size:12px;color:#9aaeb9;line-height:1.5}.memory-card canvas{width:79px;height:46px}.memory-card.candidate{border-color:#ad677d}.memory-card.deleted{border-color:#304250;background:#30425022}.memory-card.deleted strong{color:#768e9c;text-decoration:line-through}.memory-card.deleted canvas{opacity:.35}.eraser-info{padding-top:21px;border-top:1px solid var(--line);font-size:13px;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}.eraser-info>b{color:var(--mint);font-size:13px}.eraser-info>p{font-size:12px;line-height:1.8;color:#79929f;margin:3px 0 0;flex-basis:100%}.narration{font-size:12px;line-height:2;color:#76909e;margin:0;margin-top:auto;padding-top:6px}.under-game{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-top:16px;font-size:12px;color:#92a6b4}.under-game p{margin:0;line-height:1.8}.under-game button{background:none;color:#adbdc7;border:0;border-bottom:1px solid #344c5a;padding:5px 0;font-size:12px;min-height:32px;white-space:nowrap}footer{display:flex;align-items:center;justify-content:space-between;gap:16px;border-top:1px solid #223542;margin-top:24px;padding-top:16px;font-size:12px;line-height:1.8;color:#6b8594}
.screen h2{font-size:clamp(29px,3.4vw,44px);font-weight:900;line-height:1.42;letter-spacing:-.045em;margin:0 0 18px;white-space:pre-line}.screen .screen-description{font-size:14px;line-height:1.9;color:#aec3cd;margin:0 0 22px;white-space:pre-line}.screen .screen-meta{font:500 14px 'Space Grotesk','Noto Sans JP',sans-serif;color:var(--mint);margin:0 0 17px;line-height:1.6}.choice-buttons{display:flex;flex-direction:column;gap:12px}.secondary-button{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;min-height:64px;border:1px solid #725161;background:#ff677f0d;color:#ffc5d0;border-radius:3px;padding:12px 17px;font-size:14px;font-weight:600;line-height:1.5}.secondary-button small{font-size:12px;font-weight:400;color:#a68896}.secondary-button:hover{background:#ff677f18;border-color:#ff9bad}.secondary-button:disabled{opacity:.3}.result-score{font:500 42px 'Space Grotesk',sans-serif;line-height:1.15;color:var(--mint);margin:12px 0 17px}.result-score span{font-size:13px;letter-spacing:.07em;color:#8ba4ae;margin-left:8px}.save-button{min-height:44px;background:none;color:#9bb3c0;border:0;padding:10px 0;font-size:13px}.save-button:hover{color:var(--mint)}.save-status{font-size:12px;line-height:1.6;margin:7px 0 0;color:#9eb2bc}.screen.result h2{color:var(--red)}.screen.result.win h2{color:var(--mint)}.screen.pause h2{color:var(--mint)}.notice{position:absolute;z-index:4;top:18px;left:50%;transform:translateX(-50%);padding:10px 15px;border:1px solid #54766c;background:#0b1e22ef;color:var(--mint);font-size:13px;font-weight:600;text-align:center;max-width:90%;pointer-events:none;width:max-content}.notice.hit{border-color:#91566b;background:#2b1122ef;color:#ffbac9}.countdown{position:absolute;z-index:5;inset:0;background:#0b1522d9;display:grid;place-content:center;text-align:center;font:500 90px 'Space Grotesk',sans-serif;color:var(--mint);pointer-events:none}.countdown small{display:block;font:500 14px 'Noto Sans JP',sans-serif;color:#aabcc7;letter-spacing:.05em;margin-top:10px}.noscript{position:fixed;bottom:20px;left:20px;right:20px;padding:25px;background:white;color:black;z-index:10}
@media(min-width:1300px){.game-shell{grid-template-columns:minmax(0,1fr) 300px}.side-panel{padding:32px 28px}.arena{max-height:790px}.screen{max-width:490px}}
@media(max-width:1030px){.game-shell{grid-template-columns:minmax(0,1fr) 246px}.side-panel{padding:23px 18px;gap:21px}.arena{min-height:510px}.screen h1{font-size:45px}.screen{max-width:380px}.intro-lead{font-size:16px}.edition{display:none}.score-block p{font-size:51px}.memory-card{grid-template-columns:minmax(0,1fr) 65px;padding:9px}.memory-card canvas{width:65px;height:40px}.arena-header{padding:0 21px}.arena-footer{padding:14px 19px}.arena-footer p{font-size:13px}.lives{gap:5px}.lives>span{width:11px;height:11px}.screen h2{font-size:33px}}
@media(max-width:740px){.masthead{padding:17px 20px;gap:12px}.brand{font-size:22px}.brand small{margin-left:8px}.header-actions{gap:17px}.header-actions button{font-size:12px}main{padding:16px 14px 20px}.topline{font-size:12px;margin-bottom:12px}.topline>span{font-size:12px}.game-shell{grid-template-columns:1fr}.arena-panel{border-right:0}.arena{min-height:460px}.arena-header{height:53px;padding:0 19px}.round-label>span{font-size:24px}.time strong{font-size:28px}.keys strong{font-size:16px}.key-dot{font-size:24px}.overlay{padding:22px 21px}.screen{max-width:360px}.screen h1{font-size:40px;line-height:1.27;margin-bottom:16px}.eyebrow{margin-bottom:17px}.intro-lead{font-size:16px;line-height:1.7;margin-bottom:21px}.intro-rules{font-size:13px;gap:11px 12px;margin-bottom:23px;max-width:304px}.intro-footnote{font-size:12px;margin-top:15px}.primary-button{min-height:52px;padding:12px 16px;font-size:15px;gap:18px}.arena-footer{min-height:70px;padding:12px 16px}.arena-footer p{font-size:13px}.round-track{height:30px}.side-panel{border-top:1px solid #334552;display:grid;grid-template-columns:1fr 1fr;gap:17px 20px;padding:19px}.score-block{border-bottom:0;padding:0}.score-block h2{font-size:12px}.score-block p{font-size:40px;margin-top:5px}.score-block>span{display:none}.eraser-info{border-top:0;padding:0;font-size:12px;display:block}.eraser-info>b{margin-left:8px;font-size:12px}.eraser-info>p{font-size:12px;margin-top:7px;line-height:1.6}.memory-heading,.memories,.narration{display:none}.under-game{font-size:12px;align-items:flex-start;gap:12px}.under-game p{max-width:70%}.under-game button{font-size:12px;min-height:32px}footer{font-size:12px;align-items:flex-start;margin-top:19px}footer>span:last-child{display:none}.screen h2{font-size:32px;line-height:1.4;margin-bottom:15px}.screen .screen-description{font-size:14px;line-height:1.8;margin-bottom:18px}.screen .screen-meta{font-size:13px;margin-bottom:15px}.secondary-button{min-height:62px;font-size:14px;padding:10px 13px}.secondary-button small{font-size:12px}.result-score{font-size:37px;margin:8px 0 17px}.screen.result .screen-description{font-size:13px}.notice{top:14px;font-size:12px;padding:9px 12px}.countdown{font-size:77px}}
@media(max-width:380px){.masthead{padding:15px}.brand{font-size:20px}.header-actions{gap:13px}.brand small{font-size:12px;padding:2px 4px}main{padding:13px 10px}.arena{min-height:450px}.screen h1{font-size:34px}.overlay{padding:21px 17px}.screen h2{font-size:29px}.intro-rules{gap:10px;font-size:12px}.intro-lead{font-size:15px}.primary-button{font-size:14px}.side-panel{padding:17px 15px;gap:14px}.eraser-info>b{margin-left:4px}.time strong{font-size:25px}.arena-header{padding:0 16px}.round-label>span{font-size:22px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}