body{background-color:#87ceeb;margin:0;overflow:hidden}canvas{display:block}#info{text-align:center;color:#fff;text-shadow:1px 1px 2px #00000080;z-index:100;white-space:nowrap;text-overflow:ellipsis;background-color:#00000080;border-radius:5px;width:auto;min-width:200px;max-width:90%;padding:8px 12px;font-family:Arial,sans-serif;position:fixed;top:10px;left:50%;overflow:hidden;transform:translate(-50%)}.control-item{align-items:center;margin:4px 0;line-height:1.35;display:flex}.key-badge{color:#fff;text-align:center;background-color:#4a69bd;border-radius:4px;min-width:45px;margin-right:8px;padding:2px 6px;font-family:monospace;font-size:13px}.control-subhead{opacity:.85;border-top:1px solid #ffffff2e;margin:6px 0 3px;padding-top:6px;font-size:13px;font-weight:700}#authUI{flex-flow:wrap;justify-content:flex-end;gap:6px;display:flex}.provider-btn{color:#fff;cursor:pointer;-webkit-tap-highlight-color:transparent;touch-action:manipulation;-webkit-user-select:none;user-select:none;background-color:#ffffff1a;border:1px solid #ffffff2e;border-radius:8px;flex-direction:column;justify-content:center;align-items:center;gap:3px;width:60px;padding:7px 4px;font-size:11px;font-weight:600;line-height:1;transition:transform .1s,background-color .2s,border-color .2s;display:flex}.provider-btn:hover{background-color:#fff3}.provider-btn:active{transform:scale(.96)}.provider-icon{pointer-events:none;width:22px;height:22px;display:block}.provider-label{pointer-events:none}.provider-google{border-bottom:2px solid #4285f4}.provider-github{border-bottom:2px solid #6e5494}.provider-apple{border-bottom:2px solid #ccc}.provider-guest{border-bottom:2px solid 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#ffffff4d}.mini-avatar{vertical-align:middle;border-radius:50%;width:20px;height:20px;margin-right:5px}.current-user-score{background-color:#4caf5033;font-weight:700}#startGameContainer{box-sizing:border-box;z-index:2000;color:#fff;background-color:#000c;flex-direction:column;justify-content:safe center;align-items:center;width:100%;height:100%;padding:10px 10px 30px;font-family:Arial,sans-serif;display:flex;position:fixed;top:0;left:0;overflow-y:auto}#gameTitle{color:#fff;text-shadow:0 0 10px #87ceeb,0 0 20px #4caf50;letter-spacing:2px;text-align:center;margin-bottom:10px;font-size:42px;animation:2s infinite pulse}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.05)}to{transform:scale(1)}}#controlsGuide{text-align:left;touch-action:pan-y;-webkit-overflow-scrolling:touch;background-color:#ffffff1a;border-radius:10px;max-width:500px;max-height:240px;margin-bottom:15px;padding:10px 20px;overflow-y:auto}#controlsGuide h3{text-align:center;margin-top:0;margin-bottom:8px;font-size:16px}.control-row{justify-content:space-between;margin:6px 0;font-size:14px;display:flex}.key{background-color:#fff3;border-radius:4px;padding:1px 6px;font-family:monospace;font-weight:700}#difficultyPicker{flex-direction:column;gap:8px;width:280px;margin-bottom:14px;display:flex}#difficultyPicker .difficulty-heading{color:#cfd8e3;text-align:center;letter-spacing:.06em;text-transform:uppercase;font-size:12px}.difficulty-option{color:#fff;cursor:pointer;text-align:left;-webkit-tap-highlight-color:transparent;touch-action:manipulation;background-color:#ffffff0f;border:2px solid #ffffff24;border-radius:8px;flex-direction:column;align-items:flex-start;gap:2px;padding:8px 12px;font-family:inherit;transition:background-color .2s,border-color .2s,transform 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env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));color:#fff;background:#0c121cf0;flex-direction:column;justify-content:center;align-items:center;font-family:Arial,sans-serif;position:fixed;inset:0;overflow:hidden}#gameOverContent{overscroll-behavior:contain;-webkit-overflow-scrolling:touch;text-align:center;width:min(100%,440px);min-height:0;overflow:hidden auto}#gameOverContent>*{box-sizing:border-box;max-width:100%}#gameOverMessage{margin:4px 0 8px;font-size:clamp(26px,6vw,36px)}#gameOverDetail{margin:0 0 10px;font-size:16px;line-height:1.4}#gameOverContent #bestTimeDisplay{margin:8px 0 12px}#gameOverContent #courseResult{text-align:left;width:100%}#gameOverContent #authContainer{width:fit-content;margin:12px auto;position:static}#gameOverActions{background:#111925;border-top:1px solid #ffffff2e;flex-direction:column;flex-shrink:0;align-items:stretch;gap:10px;width:min(100%,440px);padding-top:12px;display:flex}#gameOverOverlay 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#finishDifficultyPicker{flex:1}}#startMenu{flex-direction:column;align-items:center;gap:10px;width:280px;margin-bottom:10px;display:flex}.menu-button{color:#fff;cursor:pointer;text-align:center;-webkit-tap-highlight-color:transparent;touch-action:manipulation;background-color:#4caf50;border:none;border-radius:8px;min-width:220px;padding:12px 20px;font-size:16px;transition:background-color .3s,transform .2s;position:relative}.menu-button:after{content:"";opacity:0;background-color:#fff3;border-radius:8px;transition:opacity 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system-ui,sans-serif;display:none}.install-prompt-install{color:#0b1020;cursor:pointer;background:#dff4ff;border:none;border-radius:999px;padding:5px 14px;font:600 13px system-ui,sans-serif}.install-prompt-install:hover{background:#fff}.install-prompt-dismiss{color:#dff4ffb3;cursor:pointer;background:0 0;border:none;border-radius:50%;width:24px;height:24px;padding:0;font-size:18px;line-height:1}.install-prompt-dismiss:hover{color:#fff}.sw-update-banner{color:#fff4d6eb;background:#ffd6782e;border:1px solid #ffe09666;border-radius:999px;align-self:center;align-items:center;gap:10px;margin:10px auto 0;padding:6px 8px 6px 14px;font:500 13px system-ui,sans-serif;display:flex}.sw-update-reload{color:#201a0b;cursor:pointer;background:#ffe08a;border:none;border-radius:999px;padding:5px 14px;font:600 13px system-ui,sans-serif}.sw-update-reload:hover{background:#fff0c0}body.start-screen-active #authContainer{z-index:2001}#aboutGamePanel{text-align:center;background-color:#000000b3;border-radius:10px;max-width:600px;margin-top:10px;margin-bottom:10px;padding:15px;font-size:14px;display:none}#aboutGamePanel h3{color:#ff7979;margin-top:0;margin-bottom:10px;font-size:18px}#aboutGamePanel p{margin-bottom:8px;line-height:1.4}#keyboardHint{opacity:.8;margin-top:8px;font-size:14px;font-style:italic}#gameCanvas{display:none;position:fixed;inset:0;overflow:hidden}#gameCanvas>canvas{max-width:100%;max-height:100%}@media (height<=650px){#gameTitle{margin-bottom:5px;font-size:32px}#controlsGuide{max-height:120px;margin-bottom:10px}#startLeaderboard{max-height:104px;margin-bottom:8px}.menu-button{padding:8px 16px;font-size:14px}}@media (width<=480px){#gameTitle{font-size:28px}#controlsGuide{max-width:90%;padding:8px 15px}}@media (width<=768px){.menu-button{min-height:44px;padding:12px 24px}}body.intro-active #controlsInfo,body.intro-active #gameStatsContainer,body.intro-active #courseHud,body.intro-active #resetBtn,body.intro-active #cameraToggleBtn,body.intro-active #cameraControls,body.intro-active .touch-control{display:none!important}.visually-hidden{clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline-offset:3px;outline:3px solid #74d9ff}.physics-era-notice{color:#cce8fa;max-width:560px;margin:10px auto 16px;font-size:13px;line-height:1.45}:root{--hud-left:max(10px, env(safe-area-inset-left));--hud-right:max(10px, env(safe-area-inset-right));--hud-top:max(10px, env(safe-area-inset-top));--hud-bottom:max(12px, env(safe-area-inset-bottom));--hud-column:min(280px, calc((100vw - var(--hud-left) - var(--hud-right) - 8px) / 2));--hud-surface:#141f2bdb}#hudLeft,#hudRight{z-index:200;top:var(--hud-top);width:var(--hud-column);pointer-events:none;flex-direction:column;gap:8px;display:flex;position:fixed}#hudLeft{left:var(--hud-left);align-items:flex-start}#hudRight{right:var(--hud-right);align-items:flex-end}body.start-screen-active #hudRight{z-index:2001}body.start-screen-active #gameStatsContainer{visibility:hidden}#controlsContainer{z-index:200;width:100%;position:relative}#gameStatsContainer{z-index:100;width:100%;position:relative}#authContainer{box-sizing:border-box;background:var(--hud-surface);z-index:999;pointer-events:auto;border-radius:12px;max-width:100%;padding:6px;font-family:Arial,sans-serif;position:relative}#authUI{justify-content:center;gap:4px}.provider-btn{box-sizing:border-box;width:60px;min-height:44px}#profileUI{flex-wrap:wrap;justify-content:flex-end;gap:4px}#profileChip,#logoutBtn{min-height:44px}#profileChip{max-width:100%}#profileName{min-width:0}#profileUI.guest #profileChip:after{content:"";border-bottom:2px solid;border-right:2px solid;flex:none;width:8px;height:8px;margin:0 8px;display:block;transform:translateY(-2px)rotate(45deg)}#profileUI.guest #profileChip[aria-expanded=true]:after{transform:translateY(2px)rotate(225deg)}.hud-panel{box-sizing:border-box;background:var(--hud-surface);color:#fff;pointer-events:auto;border:1px solid #fff3;border-radius:12px;font:14px/1.4 Arial,sans-serif;overflow:hidden;box-shadow:0 3px 14px #00000024}.hud-panel-header{cursor:pointer;-webkit-user-select:none;user-select:none;touch-action:pan-y;-webkit-tap-highlight-color:transparent;align-items:center;gap:8px;min-height:44px;padding-left:12px;display:flex}.hud-panel-header h3{white-space:nowrap;text-overflow:ellipsis;min-width:0;margin:0;font:600 14px/1.3 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.12s;display:block;transform:translateY(-2px)rotate(45deg)}[aria-expanded=true]>.panel-chevron{transform:translateY(2px)rotate(225deg)}.hud-panel :focus-visible{outline-offset:-3px;outline:3px solid #a5d8ff}#controlsInfo.collapsed,#gameStatsContainer.collapsed,#cameraControls.collapsed{width:max-content;max-width:100%}#controlsInfo.collapsed>#controlsContent,#gameStatsContainer.collapsed>#gameStatsContent,#cameraControls.collapsed>#cameraControlsContent{display:none}#controlsContent,#gameStatsContent,#cameraControlsContent{box-sizing:border-box;overscroll-behavior:contain;touch-action:pan-y;-webkit-overflow-scrolling:touch;border-top:1px solid #ffffff29;padding:10px;overflow:auto}#controlsContent{max-height:max(64px,100dvh - 410px)}#gameStatsContent{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;max-height:max(64px,100dvh - 280px);display:grid}.stat-item{flex-direction:column;min-width:0;display:flex}.stat-label{color:#c2cfdd;font-size:11px}.stat-value{overflow-wrap:anywhere;font-size:13px;font-weight:600}#currentTime,#airScoreValue{font-variant-numeric:tabular-nums}#liveRunSummary{color:#d6e7f6;white-space:nowrap;flex-shrink:0;justify-content:space-between;align-items:center;gap:12px;padding:0 10px 8px;font-size:12px;display:flex}#courseHud{top:var(--hud-top);width:min(420px,100vw - 620px);position:fixed;left:50%;transform:translate(-50%)}#resetBtn,#cameraToggleBtn{bottom:var(--hud-bottom);color:#fff;cursor:pointer;touch-action:manipulation;z-index:100;border:1px solid #fff3;border-radius:12px;min-height:44px;padding:10px 16px;font:600 14px/1.3 Arial,sans-serif;position:fixed}body.game-active #localModeNotice{display:none}#resetBtn{left:var(--hud-left);background:#26753b;width:80px}#cameraToggleBtn{left:calc(var(--hud-left) + 90px);background:#365aa6}#cameraControls{left:var(--hud-left);bottom:calc(var(--hud-bottom) + 56px);width:min(380px, calc(100vw - var(--hud-left) - var(--hud-right)));z-index:100;position:fixed}#cameraControls.collapsed{max-width:calc(100vw - var(--hud-left) - var(--hud-right))}#cameraControlsContent{max-height:calc(100dvh - var(--hud-top) - var(--hud-bottom) - 210px);flex-direction:column;gap:8px;display:flex}#cameraControls .cam-row{align-items:center;gap:6px;display:flex}#cameraControls .cam-modes{grid-template-columns:repeat(3,minmax(0,1fr));display:grid}#cameraControlsContent button{color:#fff;cursor:pointer;touch-action:manipulation;background:#365aa6;border:1px solid #ffffff26;border-radius:8px;flex-shrink:0;min-width:44px;min-height:44px;padding:6px 8px;font:13px/1.2 Arial,sans-serif}#cameraControlsContent button:hover{background:#456bbb}#cameraControlsContent button[aria-pressed=true]{color:#1a2432;background:#f6c35a;font-weight:700}#cameraControlsContent 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