:root{color:#f0f0eb;background:#0d0e0d;font-family:Inter,Segoe UI Variable,Segoe UI,sans-serif;font-synthesis:none;--ink: #f0f0eb;--muted: #858681;--quiet: #555650;--surface: #0d0e0d;--raised: #131412;--accent: #d9f36a;--line: rgba(240, 240, 235, .14)}*{box-sizing:border-box}html,body,#app{width:100%;height:100%;margin:0;overflow:hidden}button,input{font:inherit}button{color:inherit}button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:4px}.shell{position:relative;width:100%;height:100%;min-width:900px;min-height:600px;background:radial-gradient(circle at 50% 30%,#171914 0,var(--surface) 44%)}.topbar{position:absolute;z-index:10;top:0;left:0;right:0;height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 34px;border-bottom:1px solid var(--line)}.brand{font-size:14px;font-weight:760;letter-spacing:.34em}.eyebrow{color:var(--muted);font-size:9px;letter-spacing:.24em;text-transform:uppercase}.screen{position:absolute;inset:73px 0 0;display:grid;place-items:center;padding:32px;animation:enter .42s cubic-bezier(.22,1,.36,1)}.landing{width:min(890px,92vw);display:grid;grid-template-columns:1.15fr .85fr;gap:80px;align-items:end}.hero h1{margin:12px 0 20px;font-size:clamp(72px,11vw,150px);letter-spacing:-.085em;line-height:.82;font-weight:560}.hero p{max-width:410px;color:var(--muted);line-height:1.7;font-size:14px}.fixed-duration{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 3px 20px}.fixed-duration span{display:block;color:var(--muted);font-size:9px;letter-spacing:.2em}.fixed-duration strong{display:block;margin-top:8px;color:var(--accent);font-size:24px;font-weight:560;letter-spacing:-.02em}.fixed-duration p{margin:9px 0 0;color:var(--muted);font-size:9px;letter-spacing:.16em}.primary{width:100%;margin-top:26px;padding:19px 20px;display:flex;justify-content:space-between;border:1px solid var(--ink);background:var(--ink);color:var(--surface);cursor:pointer;font-size:10px;font-weight:760;letter-spacing:.2em}.primary:hover{background:var(--accent);border-color:var(--accent)}.secondary{border:0;border-bottom:1px solid var(--line);padding:10px 0;background:none;color:var(--muted);cursor:pointer;font-size:9px;letter-spacing:.18em}.landing-links{display:flex;gap:20px;margin-top:16px}.stats{margin-top:24px;display:flex;gap:24px;color:var(--muted);font-size:9px;letter-spacing:.15em}.stats strong{display:block;margin-top:6px;color:var(--ink);font-family:Consolas,monospace;font-size:17px;letter-spacing:0}.game{position:absolute;inset:73px 0 0}.hud{position:absolute;z-index:6;left:34px;right:34px;top:20px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center}.hud-center{text-align:center}.hud-right{text-align:right}.hud button{border:0;background:none;color:var(--muted);cursor:pointer;font-size:9px;letter-spacing:.18em}.progress{position:absolute;z-index:7;top:0;left:0;right:0;height:2px;background:#f0f0eb0f}.progress span{display:block;height:100%;width:0;background:var(--accent);transition:width .12s linear}.arena-wrap{position:absolute;inset:66px 34px 34px;overflow:hidden;border:1px solid var(--line);border-radius:3px;background:var(--raised)}canvas{display:block;width:100%;height:100%;cursor:none}.instruction{position:absolute;z-index:5;top:22px;left:0;right:0;text-align:center;pointer-events:none;color:var(--muted);font-size:9px;letter-spacing:.22em}.input-pill{position:absolute;z-index:5;bottom:18px;left:18px;padding:7px 9px;background:#0d0e0dc7;color:var(--muted);font-family:Consolas,monospace;font-size:9px}.diagnostics{position:absolute;z-index:5;right:18px;bottom:18px;padding:7px 9px;background:#0d0e0dd1;color:var(--accent);font-family:Consolas,monospace;font-size:9px}.hidden{display:none!important}.overlay{position:absolute;z-index:20;inset:0;display:grid;place-items:center;background:#0d0e0df0;backdrop-filter:blur(7px);text-align:center}.overlay h2,.transition h2{margin:8px 0;font-size:clamp(56px,9vw,115px);line-height:.9;letter-spacing:-.07em;font-weight:560}.overlay-actions{display:flex;gap:24px;justify-content:center;margin-top:28px}.overlay-actions button{min-width:120px;border:0;border-top:1px solid var(--line);padding:15px 0;background:none;cursor:pointer;font-size:9px;letter-spacing:.17em}.overlay-actions button:first-child{border-color:var(--accent);color:var(--accent)}.transition{position:absolute;z-index:15;inset:0;display:grid;place-items:center;background:var(--surface);text-align:center;animation:enter .22s ease-out}.transition .count{color:var(--accent);font-family:Consolas,monospace;font-size:11px;letter-spacing:.22em}.results-screen{padding-top:22px;padding-bottom:22px}.results{width:min(1080px,94vw);display:grid;grid-template-columns:.92fr 1.08fr;gap:70px;align-items:center}.result-overview{min-width:0}.score-lockup{display:flex;align-items:flex-end;gap:28px;margin:12px 0 18px}.result-score{font-size:clamp(104px,13.5vw,184px);line-height:.78;letter-spacing:-.09em;font-weight:530}.grade{min-width:88px;padding:12px 0 4px;border-top:1px solid var(--line)}.grade span,.grade small{display:block;color:var(--muted);font-size:8px;letter-spacing:.2em}.grade strong{display:block;margin:2px 0;color:var(--accent);font:58px/.95 Consolas,monospace}.result-message,.personal-best{color:var(--accent);font-size:10px;letter-spacing:.22em}.personal-best{display:inline-block;padding:8px 11px;border:1px solid rgba(217,243,106,.4);background:#d9f36a0f}.exercise-scores{display:grid;grid-template-columns:repeat(3,1fr);margin-top:34px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.exercise-scores>div{padding:15px 14px 15px 0;border-right:1px solid var(--line)}.exercise-scores>div:not(:first-child){padding-left:14px}.exercise-scores>div:last-child{border-right:0}.exercise-scores span,.result-meta span{display:block;color:var(--muted);font-size:8px;letter-spacing:.17em}.exercise-scores strong{display:block;margin-top:6px;font:21px Consolas,monospace}.result-details{min-width:0}.result-meta{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);background:var(--raised)}.result-meta>div{padding:13px 16px;border-right:1px solid var(--line)}.result-meta>div:last-child{border:0}.result-meta strong{display:block;margin-top:6px;font:15px Consolas,monospace}.result-meta .positive{color:var(--accent)}.metrics{border-top:1px solid var(--line)}.metric{display:flex;justify-content:space-between;padding:15px 0;border-bottom:1px solid var(--line);font-size:10px;letter-spacing:.17em}.metric span:first-child{color:var(--muted)}.metric-grid{display:grid;grid-template-columns:1fr 1fr;margin-top:14px}.metric-grid .metric{padding:12px 14px 12px 0}.metric-grid .metric:nth-child(odd){border-right:1px solid var(--line)}.metric-grid .metric:nth-child(2n){padding-left:14px}.result-insight{margin:18px 0;padding:14px 16px;border-left:2px solid var(--accent);background:linear-gradient(90deg,rgba(217,243,106,.07),transparent)}.result-insight strong{font-size:10px;letter-spacing:.16em}.result-insight p{margin:7px 0 0;color:var(--muted);font-size:12px;line-height:1.5}.compact-actions{display:grid;grid-template-columns:1fr 1fr;gap:14px}.compact-actions .primary{margin:0}.compact-actions .secondary{border:1px solid var(--line);padding:18px}.primary:disabled{cursor:wait;opacity:.62}.result-footer{display:flex;align-items:center;justify-content:space-between;min-height:31px;margin-top:8px}.result-footer .secondary{border:0;padding:8px 0}.result-footer span{color:var(--muted);font-size:8px;letter-spacing:.12em}.panel{width:min(660px,90vw)}.panel.wide{width:min(960px,92vw)}.panel-title{margin:10px 0 34px;font-size:clamp(46px,6vw,82px);line-height:.95;letter-spacing:-.065em;font-weight:560}.tutorial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}.tutorial-grid article{min-height:190px;padding:25px;background:var(--raised)}.tutorial-grid span,.tutorial-grid p{color:var(--muted);font-size:11px;line-height:1.6}.tutorial-grid h3{margin:38px 0 8px;font-size:22px;letter-spacing:-.03em}.summary-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line)}.summary-grid>div{padding:18px;border-right:1px solid var(--line);color:var(--muted);font-size:9px;letter-spacing:.15em}.summary-grid>div:last-child{border:0}.summary-grid strong{display:block;margin-top:9px;color:var(--ink);font:22px Consolas,monospace;letter-spacing:0}.history-chart{height:190px;margin-top:20px;padding:20px 20px 0;display:flex;align-items:end;gap:7px;border:1px solid var(--line);background:var(--raised)}.history-bar{min-width:6px;flex:1;max-width:35px;background:var(--accent);opacity:.72}.empty-chart{align-self:center;width:100%;text-align:center;color:var(--muted);font-size:9px;letter-spacing:.18em}.difficulty-row{display:grid;grid-template-columns:repeat(3,1fr);margin-top:14px;gap:14px}.difficulty-row>div{display:flex;justify-content:space-between;padding:12px 0;border-top:1px solid var(--line);color:var(--muted);font-size:9px;letter-spacing:.12em}.difficulty-row strong{color:var(--ink);font-family:Consolas,monospace}.settings-panel{max-height:calc(100vh - 130px);overflow:auto;padding-right:8px}.setting{display:grid;grid-template-columns:1fr 1.2fr;align-items:center;gap:24px;padding:16px 0;border-top:1px solid var(--line)}.setting label{font-size:10px;letter-spacing:.15em}.setting small{display:block;margin-top:5px;color:var(--muted);font-size:8px}.setting input[type=range]{width:100%;accent-color:var(--accent)}.text-input{width:100%;border:1px solid var(--line);padding:10px 12px;background:var(--raised);color:var(--ink)}.toggles{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:18px 0;border-top:1px solid var(--line)}.toggles label{color:var(--muted);font-size:9px;letter-spacing:.12em}.toggles input{accent-color:var(--accent)}.calibration{border:1px solid var(--line);padding:7px 16px;background:var(--raised)}.calibration>div{display:flex;justify-content:space-between;padding:9px 0;color:var(--muted);font-size:9px;letter-spacing:.1em}.calibration strong{color:var(--ink)}.settings-actions{display:grid;grid-template-columns:2fr 1fr 1fr;gap:12px;margin-top:18px}.settings-actions .primary{margin:0}.settings-actions .secondary{border:1px solid var(--line);padding:14px}.danger{color:#d98d80}.high-contrast{--muted: #b7b8b2;--line: rgba(240,240,235,.32);--accent: #e7ff74}.reduced-motion *,.reduced-motion *:before,.reduced-motion *:after{animation-duration:1ms!important;transition-duration:1ms!important}@keyframes enter{0%{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:1ms!important;transition-duration:1ms!important}}