@font-face{font-family:KHDot;src:url(./KH-Dot-Akihabara-16-CrpghjiV.ttf) format("truetype");font-display:swap}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%}body{background:#000;overflow:hidden;font-family:KHDot,Segoe UI,sans-serif;touch-action:none;overscroll-behavior:none}#game-wrap{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center}canvas{display:block;width:auto;height:auto;max-width:100vw;max-height:100vh;aspect-ratio:960 / 900}@media(max-aspect-ratio:960/900){canvas{width:100vw;height:auto}}@media(min-aspect-ratio:960/900){canvas{height:100vh;width:auto}}@media(hover:hover)and (pointer:fine){.mobile-only{display:none!important}}@media(hover:none),(pointer:coarse){.pc-only{display:none!important}}#ui-overlay{position:fixed;top:env(safe-area-inset-top,10px);left:50%;transform:translate(-50%);color:#fff;font-size:14px;pointer-events:none;text-align:center;text-shadow:1px 1px 3px rgba(0,0,0,.8);z-index:10}#start-screen,#gameover-screen{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;text-align:center;z-index:30;padding:16px;background:#0006}#start-screen h1,#gameover-screen h1{font-size:clamp(28px,6vw,48px);margin-bottom:10px;color:#ff6b35;text-shadow:2px 2px 5px rgba(0,0,0,.7)}#gameover-screen h1{color:#f44;font-size:clamp(26px,5.5vw,42px)}#start-screen p,#gameover-screen p{font-size:clamp(14px,2.5vw,18px);margin-bottom:14px;color:#adf;max-width:90vw;line-height:1.5}.hint{font-size:clamp(12px,2vw,14px)!important;color:#8bd!important}#gameover-screen .depth-result{font-size:clamp(20px,4vw,28px);color:#fc0;margin-bottom:16px}.game-btn{padding:14px 36px;font-size:clamp(18px,3vw,22px);background:linear-gradient(135deg,#ff6b35,#e04500);color:#fff;border:none;border-radius:8px;cursor:pointer;transition:transform .1s;-webkit-tap-highlight-color:transparent}.game-btn:hover{transform:scale(1.05)}.game-btn:active{transform:scale(.97)}.hidden{display:none!important}#best-record{font-size:clamp(13px,2.4vw,16px);color:#fc6;margin-bottom:14px;min-height:20px}#ranking-title{font-size:clamp(13px,2.4vw,16px);color:#fc6;margin-bottom:6px}#ranking-list{margin:0 auto 16px;width:min(360px,90vw);text-align:left;background:#0000004d;border-radius:6px;padding:8px 0}.rank-row{display:flex;align-items:center;font-size:clamp(12px,2.2vw,14px);padding:4px 14px;color:#acd;font-variant-numeric:tabular-nums}.rank-row.current{background:#ffdc002e;color:#ffeb55;font-weight:700}.rank-num{width:32px;color:#8ac}.rank-row.current .rank-num{color:#ffeb55}.rank-depth{flex:1}.rank-score{text-align:right;min-width:80px}.font-credit{position:absolute;right:12px;bottom:12px;font-size:11px;color:#ffffff73;text-align:right;line-height:1.4}.font-credit a{color:#b4dcffa6;text-decoration:underline}.font-credit a:hover{color:#fff}