*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{width:100%;height:100%;overflow:hidden;background:#0b1020;font-family:"Trebuchet MS","Segoe UI",system-ui,sans-serif;color:#fff;user-select:none;-webkit-user-select:none;touch-action:none;overscroll-behavior:none}
body{display:flex;align-items:center;justify-content:center;background:radial-gradient(circle at 50% 30%,#1d3b6e,#0b1020 70%)}
#frame{position:relative;height:100vh;height:100dvh;width:min(100vw,calc(100dvh * 9 / 16));overflow:hidden;background:#7cc8ff;box-shadow:0 0 40px rgba(0,0,0,.6)}
@media (min-width:700px){#frame{height:96dvh;width:calc(96dvh * 9 / 16);border-radius:18px}}
canvas{display:block;width:100%;height:100%}
.hidden{display:none!important}
#hud{position:absolute;inset:0;pointer-events:none;padding:calc(10px + env(safe-area-inset-top)) 12px 0;display:flex;justify-content:space-between;align-items:flex-start}
.hud-left{display:flex;gap:10px;align-items:flex-start}
.icon-btn{pointer-events:auto;width:46px;height:46px;border-radius:12px;border:2px solid rgba(255,255,255,.85);background:rgba(20,40,80,.55);color:#fff;font-size:18px;font-weight:900;cursor:pointer}
.mute{position:absolute;right:12px;bottom:calc(14px + env(safe-area-inset-bottom));z-index:5}
.scores{font-weight:900;font-size:20px;text-shadow:0 2px 0 #1b2f5a,0 0 6px rgba(0,0,0,.4);line-height:1.25}
.scores b{color:#ffd23f}
.scores .best{font-size:15px}
.combo{background:rgba(18,38,78,.88);border:3px solid #fff;border-radius:14px;padding:4px 12px 8px;text-align:center;min-width:104px;transition:transform .12s}
.combo.bump{transform:scale(1.12)}
.combo-label{font-size:13px;font-weight:900;letter-spacing:1px}
.combo-val{font-size:34px;font-weight:900;color:#ffd23f;line-height:1}
.bar{height:8px;border-radius:5px;background:#203552;margin-top:4px;overflow:hidden;border:1px solid #fff}
.bar i{display:block;height:100%;width:0;background:#4ade80;transition:width .15s}
.overlay{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:linear-gradient(180deg,rgba(12,30,70,.35),rgba(10,16,40,.75));text-align:center;padding:24px;cursor:pointer;z-index:4}
.logo{font-size:44px;font-weight:900;line-height:.95;color:#fff;text-shadow:0 4px 0 #1b3a8a,0 8px 18px rgba(0,0,0,.45);letter-spacing:1px}
.logo span{display:block;color:#ffd23f;font-size:62px}
.logo.small{font-size:50px;color:#ffd23f}
.tag{font-size:16px;font-weight:700;line-height:1.4;text-shadow:0 2px 4px rgba(0,0,0,.5)}
.big-btn{font-weight:900;font-size:22px;font-family:inherit;padding:14px 34px;border-radius:16px;border:3px solid #fff;background:linear-gradient(#ffcf3a,#ff9f1a);color:#3b1d00;box-shadow:0 5px 0 #b45309;cursor:pointer}
.pulse{animation:pulse 1s infinite}
@keyframes pulse{50%{transform:scale(1.06)}}
.hint{font-size:12px;opacity:.85}
.best-line,.final{font-size:20px;font-weight:900}
.final b{color:#ffd23f;font-size:34px}
.new-best{color:#4ade80;font-weight:900;font-size:22px;animation:pulse .6s infinite}
#floaters{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.floater{position:absolute;font-weight:900;font-size:22px;color:#ffd23f;text-shadow:0 2px 0 #7a3b00;animation:floatUp .8s ease-out forwards;transform:translate(-50%,-50%)}
@keyframes floatUp{to{opacity:0;margin-top:-70px}}