:root{--font-display: "Arial Black", "Helvetica Neue", Impact, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", sans-serif;--font-ui: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", "Segoe UI", system-ui, sans-serif;--orange: #ff8a1f;--yellow: #ffd23f;--ink: #111418;--safe-t: env(safe-area-inset-top, 0px);--safe-b: env(safe-area-inset-bottom, 0px);--safe-l: env(safe-area-inset-left, 0px);--safe-r: env(safe-area-inset-right, 0px)}*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden;background:#101317;color:#fff;font-family:var(--font-ui);touch-action:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;-webkit-tap-highlight-color:transparent;overscroll-behavior:none}#game{position:fixed;inset:0;width:100%;height:100%;display:block;touch-action:none}.hidden{display:none!important}button{font-family:var(--font-display);border:none;cursor:pointer;touch-action:manipulation}.outline{text-shadow:0 3px 0 var(--ink),0 0 2px var(--ink)}#hud{position:fixed;inset:0;pointer-events:none;z-index:10}.hud-top{position:absolute;top:0;left:0;right:0;display:flex;justify-content:space-between;align-items:flex-start;padding:calc(10px + var(--safe-t)) calc(14px + var(--safe-r)) 0 calc(14px + var(--safe-l))}.hud-score .lbl{font-family:var(--font-display);font-size:13px;letter-spacing:.18em;color:var(--yellow);text-shadow:0 2px 0 var(--ink)}#score{font-family:var(--font-display);font-style:italic;font-size:clamp(28px,6vw,46px);line-height:1;-webkit-text-stroke:1.5px var(--ink);paint-order:stroke fill;text-shadow:0 4px 0 var(--ink);min-width:4ch}.hud-timer{position:absolute;left:50%;top:calc(8px + var(--safe-t));transform:translate(-50%);width:70px;height:70px;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle at 35% 30%,#3a3f47,#15181c 70%);border:4px solid #fff;box-shadow:0 4px 0 var(--ink),0 6px 18px #00000059}#timer{font-family:var(--font-display);font-size:32px;line-height:1}.hud-timer.warn{border-color:#ff3b3b;background:radial-gradient(circle at 35% 30%,#a8141c,#4a0508 70%)}.hud-timer.tick{animation:tick .5s ease-out}@keyframes tick{0%{transform:translate(-50%) scale(1.3)}to{transform:translate(-50%) scale(1)}}.hud-buttons{display:flex;gap:8px;pointer-events:auto}.icon-btn{width:44px;height:44px;border-radius:12px;background:#0f12168c;color:#fff;font-size:22px;line-height:1;border:2px solid rgba(255,255,255,.35);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}.icon-btn:active{transform:scale(.92)}.combo{position:absolute;right:calc(14px + var(--safe-r));top:calc(66px + var(--safe-t));text-align:right;opacity:0;transform:translate(30px);transition:opacity .2s,transform .2s}.combo.show{opacity:1;transform:none}.combo.bump .combo-main{animation:bump .25s ease-out}@keyframes bump{0%{transform:scale(1.35) rotate(-4deg)}to{transform:scale(1) rotate(0)}}.combo-main{font-family:var(--font-display);font-style:italic;display:flex;align-items:baseline;justify-content:flex-end;gap:6px;transform-origin:right center;-webkit-text-stroke:1.5px var(--ink);paint-order:stroke fill;text-shadow:0 3px 0 var(--ink)}#combo-count{font-size:40px;line-height:1;color:var(--yellow)}.combo-lbl{font-size:16px}#combo-mult{font-size:30px;color:#fff;background:var(--orange);padding:0 8px;border-radius:8px;-webkit-text-stroke:0;text-shadow:0 2px 0 rgba(0,0,0,.4);box-shadow:0 3px 0 var(--ink)}.combo[data-tier="3"] #combo-mult{background:#ff5a1f}.combo[data-tier="4"] #combo-mult{background:#ff2d6f}.combo[data-tier="5"] #combo-mult{background:linear-gradient(90deg,#b84dff,#ff2d95)}.combo-bar{margin-top:6px;margin-left:auto;width:150px;height:7px;border-radius:4px;background:#00000073;overflow:hidden}#combo-fill{width:100%;height:100%;background:linear-gradient(90deg,var(--yellow),var(--orange));transform-origin:left center}.hud-speed{position:absolute;left:50%;bottom:calc(14px + var(--safe-b));transform:translate(-50%);font-family:var(--font-display);font-style:italic;font-size:24px;text-shadow:0 2px 0 var(--ink);opacity:.9}.hud-speed small{font-size:12px;margin-left:3px;opacity:.8}#popups,#center-text{position:absolute;inset:0;overflow:hidden}.pop{position:absolute;font-family:var(--font-display);font-style:italic;font-size:24px;color:#fff;white-space:nowrap;-webkit-text-stroke:1.5px var(--ink);paint-order:stroke fill;text-shadow:0 3px 0 var(--ink);transform:translate(-50%,-50%);animation:popRise .95s cubic-bezier(.2,.9,.3,1) forwards}.pop.big{font-size:32px;color:var(--yellow)}.pop.huge{font-size:42px;color:#ffb21f}.pop.label{font-size:30px;color:#ff4d3d;animation-duration:1.1s}.pop.label.big{font-size:40px;color:#ffcf1f;-webkit-text-stroke:2px #6a1300}.pop.boost{font-size:34px;color:#ffb000;animation-duration:.7s}@keyframes popRise{0%{transform:translate(-50%,-50%) scale(.3) rotate(var(--rot, 0deg));opacity:0}15%{transform:translate(-50%,-70%) scale(1.25) rotate(var(--rot, 0deg));opacity:1}30%{transform:translate(-50%,-80%) scale(1) rotate(var(--rot, 0deg))}to{transform:translate(-50%,-190%) scale(.95) 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