:root{--game-accent:#187a72;--arcade-ink:#243b3b;--arcade-paper:#f8faf8;--arcade-line:#dce5e1}
*{box-sizing:border-box}
html,body.arcade-page{margin:0;min-height:100%;letter-spacing:0}
body.arcade-page{background:var(--arcade-paper);color:var(--arcade-ink);font:500 14px/1.5 'Zen Maru Gothic','M PLUS Rounded 1c',sans-serif;display:flex;flex-direction:column;min-height:100svh;overflow-x:hidden}
button,input,select{font:inherit}
button,a,select,input{-webkit-tap-highlight-color:transparent}
button{cursor:pointer}
button:disabled{cursor:default;opacity:.45}
button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid var(--game-accent);outline-offset:3px}
button svg,a svg{width:20px;height:20px;flex-shrink:0}
[hidden]{display:none!important}
.arcade-header{height:66px;flex-shrink:0;display:flex;align-items:center;gap:20px;padding:10px 24px;background:#fff;border-bottom:1px solid var(--arcade-line);position:relative;z-index:3}
.arcade-brand{color:var(--arcade-ink);display:flex;align-items:center;gap:8px;text-decoration:none;font-weight:800;white-space:nowrap}
.arcade-brand img{width:34px;height:34px;border-radius:6px}
.arcade-header h1{margin:0;font-size:18px;font-weight:800;line-height:1.25;flex:1;min-width:0;overflow-wrap:anywhere}
.arcade-tools{display:flex;gap:6px;flex-shrink:0}
.arcade-icon{border:1px solid var(--arcade-line);background:#fff;color:var(--arcade-ink);width:40px;height:40px;border-radius:7px;display:grid;place-items:center;padding:0}
.arcade-icon:hover,.arcade-button:hover{background:#eef4f1}
.arcade-stage{height:calc(100svh - 190px);min-height:370px;position:relative;width:100%;overflow:hidden;isolation:isolate;background:#dceff2}
.arcade-canvas{display:block;position:absolute;inset:0;width:100%;height:100%;touch-action:none;outline:none}
.arcade-hud{position:absolute;top:16px;left:50%;transform:translateX(-50%);display:flex;align-items:center;justify-content:center;gap:0;max-width:calc(100% - 32px);z-index:2;pointer-events:none;background:rgba(255,255,255,.93);border:1px solid rgba(255,255,255,.7);border-radius:8px;box-shadow:0 4px 18px #254d4910;overflow:hidden}
.arcade-stat{min-width:96px;padding:8px 20px;text-align:center;border-right:1px solid #dce5e1;display:flex;flex-direction:column;align-items:center}
.arcade-stat:last-child{border-right:0}
.arcade-stat>span{font-size:11px;font-weight:700;color:#617674;white-space:nowrap}
.arcade-stat>strong{font-size:22px;font-weight:900;line-height:1.2;font-variant-numeric:tabular-nums;white-space:nowrap}
.arcade-status{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);margin:0;padding:6px 14px;background:rgba(255,255,255,.91);border-radius:6px;font-weight:700;font-size:13px;max-width:calc(100% - 32px);text-align:center;pointer-events:none;z-index:2;min-height:31px}
.arcade-status:empty{display:none}
.arcade-overlay{position:absolute;inset:0;display:flex;justify-content:center;align-items:center;z-index:8;background:#153c381c;padding:20px}
.arcade-dialog{width:300px;max-width:100%;background:rgba(255,255,255,.97);border:1px solid #fff;border-radius:8px;padding:24px;text-align:center;box-shadow:0 12px 50px #143e3624}
.arcade-dialog h2{font-size:21px;line-height:1.4;margin:0 0 18px;font-weight:900}
.arcade-result-score{font-size:40px;line-height:1.2;font-weight:900;overflow-wrap:anywhere;margin:12px 0;color:var(--game-accent)}
.arcade-result-detail{margin:12px 0 20px;font-size:14px;color:#576c69}
.arcade-start{border:0;border-radius:7px;background:var(--game-accent);color:#fff;font-weight:800;min-height:46px;padding:10px 30px;width:100%;font-size:16px}
.arcade-start:hover{filter:brightness(1.08)}
.arcade-controls{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:14px;padding:14px 20px;min-height:78px;background:#fff;border-top:1px solid var(--arcade-line);position:relative;z-index:4}
.arcade-button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 16px;border:1px solid var(--arcade-line);border-radius:7px;background:#fff;color:var(--arcade-ink);font-weight:800;white-space:nowrap;touch-action:manipulation}
.arcade-button--primary{background:var(--game-accent);border-color:var(--game-accent);color:#fff}
.arcade-button--primary:hover{background:var(--game-accent);filter:brightness(1.1)}
.arcade-range{display:flex;align-items:center;gap:10px;max-width:210px;flex:1 1 145px;font-size:12px;font-weight:700}
.arcade-range>span{white-space:nowrap}
.arcade-range input{width:100%;min-width:65px;height:32px;accent-color:var(--game-accent);cursor:pointer}
.arcade-footer{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:46px;padding:7px 24px;border-top:1px solid var(--arcade-line);font-size:11px;color:#607772;background:var(--arcade-paper)}
.arcade-footer a{color:inherit;text-decoration:none}
.arcade-footer a:hover{text-decoration:underline}
.arcade-footer{flex-wrap:wrap}
.arcade-volume{display:flex;align-items:center;gap:5px;flex:0 0 88px;height:30px}
.arcade-volume svg{width:16px;height:16px;flex-shrink:0}
.arcade-volume input{width:66px;min-width:0;height:30px;accent-color:var(--game-accent);cursor:pointer}
.arcade-switcher{display:flex;align-items:center;gap:8px}
.arcade-switcher select{background:transparent;color:var(--arcade-ink);border:0;max-width:185px;padding:3px 20px 3px 0;font-size:12px;cursor:pointer}
.arcade-load-error{position:absolute;inset:0;display:grid;place-content:center;text-align:center;background:#f8faf8;z-index:20;padding:24px}
.arcade-load-error a{color:var(--game-accent)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:640px){
 .arcade-header{height:60px;padding:8px 12px;gap:10px}
 .arcade-brand span{display:none}.arcade-brand img{width:30px;height:30px}
 .arcade-header h1{font-size:15px}.arcade-tools{gap:4px}
 .arcade-icon{width:34px;height:36px;border-color:transparent}.arcade-icon svg{width:19px;height:19px}
 .arcade-stage{height:calc(100svh - 196px);min-height:345px}
 .arcade-hud{top:10px;max-width:calc(100% - 20px)}
 .arcade-stat{min-width:74px;padding:7px 12px}.arcade-stat>strong{font-size:20px}.arcade-stat>span{font-size:10px}
 .arcade-controls{gap:8px;padding:10px 12px;min-height:90px}.arcade-button{padding:9px 12px;font-size:12px;gap:6px}
 .arcade-range{flex-basis:120px;max-width:170px;gap:5px}
 .arcade-footer{padding:6px 12px;gap:8px;font-size:10px}.arcade-switcher>span{display:none}
 .arcade-status{font-size:12px;bottom:10px}
}
@media(max-height:500px) and (orientation:landscape){
 .arcade-header{height:48px}.arcade-stage{min-height:260px;height:calc(100svh - 108px)}
 .arcade-controls{min-height:60px;padding:6px 12px}.arcade-footer{display:none}
 .arcade-hud{top:8px;left:12px;transform:none}.arcade-stat{padding:4px 10px;min-width:65px}.arcade-stat>strong{font-size:18px}
 .arcade-dialog{padding:16px;width:270px}.arcade-dialog h2{font-size:18px;margin-bottom:12px}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}