:root{--bg: #0f1115;--bg-elevated: #171a21;--bg-hover: #1e2230;--border: #262b38;--text: #e8eaf0;--text-dim: #8b93a7;--accent: #4f8cff;--accent-contrast: #ffffff;--success: #3ecf6e;--danger: #ff4f5e;--warning: #ffc24f;--game-light-off: #2a1215;--game-light-on: #ff2733;--game-ball: #6b7488;--game-ball-target: #ffc24f;--game-go: #3ecf6e;--game-nogo: #ff4f5e;--radius: 14px;--radius-sm: 8px;--gap: 14px;--font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-mono: ui-monospace, "Cascadia Mono", "SF Mono", Consolas, monospace}*,*:before,*:after{box-sizing:border-box}html{color-scheme:dark;overscroll-behavior-y:none}body{margin:0;min-height:100dvh;background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.5;-webkit-font-smoothing:antialiased;touch-action:manipulation}h1,h2,h3{margin:0 0 .5em;line-height:1.2}a{color:var(--accent);text-decoration:none}button{font:inherit;color:inherit;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 18px;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent}button.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-contrast);font-weight:600}button.danger{background:transparent;border-color:var(--danger);color:var(--danger)}button:disabled{opacity:.45;cursor:default}.container{max-width:720px;margin:0 auto;padding:0 var(--gap) calc(var(--gap) * 2)}.app-header{display:flex;align-items:center;justify-content:space-between;padding:var(--gap);max-width:720px;margin:0 auto}.app-header .brand{font-size:1.15rem;font-weight:700;color:var(--text)}.app-header nav{display:flex;gap:calc(var(--gap) * 1.25)}.app-header nav a{color:var(--text-dim);font-size:.9rem}.app-header nav a[aria-current=page]{color:var(--text)}.card{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius);padding:var(--gap)}.test-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:var(--gap)}.test-card{display:flex;flex-direction:column;gap:8px;color:var(--text);-webkit-tap-highlight-color:transparent}.test-card:active{background:var(--bg-hover)}.test-card .icon{width:34px;height:34px;color:var(--accent)}.test-card .name{font-weight:600}.test-card .meta{font-size:.78rem;color:var(--text-dim);font-variant-numeric:tabular-nums}.game-stage{position:fixed;inset:0;background:var(--bg);touch-action:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;overscroll-behavior:none;display:flex;flex-direction:column}body.game-locked .app-header{pointer-events:none;opacity:.3}.countdown-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:clamp(4rem,25vw,9rem);font-weight:800;font-variant-numeric:tabular-nums;color:var(--text);background:var(--bg);z-index:10}.pause-overlay{position:absolute;inset:0;display:flex;flex-direction:column;gap:var(--gap);align-items:center;justify-content:center;background:color-mix(in srgb,var(--bg) 88%,transparent);z-index:20}.results{display:flex;flex-direction:column;gap:var(--gap);align-items:center;text-align:center;padding:calc(var(--gap) * 2) var(--gap)}.results .score{font-size:3rem;font-weight:800;font-variant-numeric:tabular-nums}.results .stat-row{display:flex;gap:calc(var(--gap) * 2);justify-content:center;color:var(--text-dim);font-size:.9rem;font-variant-numeric:tabular-nums}.results .stat-row b{color:var(--text);display:block;font-size:1.1rem}.footnote{font-size:.72rem;color:var(--text-dim);max-width:40ch}.f1-wrap{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:calc(var(--gap) * 2.5);padding:var(--gap)}.f1-status{font-size:.9rem;letter-spacing:.08em}.f1-board{display:flex;gap:clamp(8px,3vw,18px)}.f1-col{display:flex;flex-direction:column;gap:clamp(6px,2vw,12px);padding:clamp(6px,2vw,12px);background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-sm)}.f1-light{width:clamp(26px,9vw,52px);aspect-ratio:1;border-radius:50%;background:var(--game-light-off)}.f1-col.on .f1-light{background:var(--game-light-on);box-shadow:0 0 16px color-mix(in srgb,var(--game-light-on) 55%,transparent)}.f1-msg{min-height:2.6em;font-size:1.6rem;font-weight:700;text-align:center}.f1-msg.time{color:var(--text);font-variant-numeric:tabular-nums}.f1-msg.jump{color:var(--danger);font-size:2.1rem;letter-spacing:.05em}#config-rows{display:flex;flex-direction:column;gap:10px}.cfg-row{display:flex;align-items:center;justify-content:space-between;gap:var(--gap);font-size:.9rem}.cfg-ctrl{display:flex;align-items:center;gap:6px}.cfg-ctrl button{width:40px;padding:8px 0;font-size:1.1rem;line-height:1}.cfg-ctrl input{width:58px;text-align:center;font-size:1rem;padding:8px 4px;background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:var(--radius-sm);-moz-appearance:textfield;appearance:textfield}.cfg-ctrl input::-webkit-outer-spin-button,.cfg-ctrl input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.cfg-advanced summary{cursor:pointer;color:var(--text-dim);font-size:.85rem;padding:6px 0;user-select:none;-webkit-user-select:none;-webkit-tap-highlight-color:transparent}.cfg-advanced[open] summary{color:var(--text)}.cfg-advanced-rows{display:flex;flex-direction:column;gap:10px;padding-top:8px}.mot-top{display:flex;justify-content:space-between;align-items:center;gap:var(--gap);padding:calc(var(--gap) * .75) var(--gap);font-size:.9rem}.mot-hint{font-size:.85rem;text-align:right}.mot-arena{flex:1;min-height:0;position:relative;display:flex}.mot-canvas{flex:1;min-height:0;width:100%;display:block}.mot-countdown{position:absolute;top:4%;left:0;right:0;text-align:center;font-size:clamp(2.6rem,12vw,4.5rem);font-weight:800;font-variant-numeric:tabular-nums;color:var(--text);opacity:.9;pointer-events:none}.mot-bottom{padding:var(--gap);padding-bottom:calc(var(--gap) + env(safe-area-inset-bottom,0px));display:flex;justify-content:center;min-height:72px}.mot-bottom button{min-width:60%;font-size:1.05rem}.gng-top{padding:var(--gap);text-align:center;font-size:.9rem}.gng-arena{flex:1;display:flex;align-items:center;justify-content:center}.gng-stim{width:clamp(110px,38vw,220px);aspect-ratio:1;border-radius:50%}.gng-stim.go{background:var(--game-go)}.gng-stim.nogo{background:var(--game-nogo)}.ds-top{padding:var(--gap);text-align:center;font-size:1rem;min-height:3em}.ds-display{flex:1;display:flex;align-items:center;justify-content:center}.ds-digit{font-size:clamp(5rem,30vw,10rem);font-weight:800;font-variant-numeric:tabular-nums}.ds-input{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:calc(var(--gap) * 1.5);padding:var(--gap);padding-bottom:calc(var(--gap) + env(safe-area-inset-bottom,0px))}.ds-typed{font-size:1.6rem;min-height:1.5em;letter-spacing:.1em}.ds-pad{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;width:min(320px,90vw)}.ds-pad button{font-size:1.5rem;padding:14px 0;touch-action:none}.rot-top{display:flex;justify-content:space-between;padding:calc(var(--gap) * .75) var(--gap);font-size:.9rem;min-height:2.4em}.rot-views{flex:1;display:flex;gap:var(--gap);padding:0 var(--gap);min-height:0}@media(orientation:portrait){.rot-views{flex-direction:column}}.rot-view{flex:1;min-width:0;min-height:0;position:relative;border:2px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--bg-elevated)}.rot-view canvas{width:100%;height:100%;display:block;touch-action:none}.rot-view.correct{border-color:var(--success)}.rot-view.wrong{border-color:var(--danger)}.rot-buttons{display:flex;gap:var(--gap);padding:var(--gap);padding-bottom:calc(var(--gap) + env(safe-area-inset-bottom,0px))}.rot-buttons button{flex:1;font-size:1.05rem;font-weight:600;padding:14px 0}.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}.dim{color:var(--text-dim)}