:root{--text: #1d1d1f;--secondary: #424245;--muted: #636366;--surface: #fff;--surface-soft: #f0f0f3;--background: #f5f5f7;--line: #00000014;--line-strong: #0000001f;--green: #0f6745;--typed-color: #67a389;--accent: #2fb57f;--accent-soft: #e5f4ec;--glow: #2fb57f4d;--glass: #ffffffb8;--glass-strong: #ffffffe0;--highlight: #ffffffcc;--primary-top: #3a3a3c;--primary-bottom: #1d1d1f;--primary-text: #fff;--shadow-card: 0 1px 1px #0000000a, 0 8px 24px -8px #0000001a, 0 32px 64px -32px #0000002e;--ease-out: cubic-bezier(.22, 1, .36, 1);--ease-spring: cubic-bezier(.34, 1.4, .64, 1);font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,Helvetica Neue,Hiragino Sans,Hiragino Kaku Gothic ProN,Noto Sans JP,Meiryo,sans-serif;color:var(--text);background:var(--background);font-synthesis:none;font-feature-settings:"palt" 1}*{box-sizing:border-box}body{margin:0}button,textarea{font:inherit}button{color:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}button:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px}kbd{font-family:inherit;display:inline-flex;align-items:center;justify-content:center;min-width:24px;height:24px;padding:0 7px;font-size:11px;font-weight:500;color:var(--muted);background:linear-gradient(180deg,var(--surface),var(--surface-soft));border:1px solid var(--line);border-radius:6px;box-shadow:0 1px 0 var(--line-strong),inset 0 1px 0 var(--highlight);white-space:nowrap}main{width:calc(100% - 48px);max-width:900px;margin:0 auto}.segmented{position:relative;display:inline-flex;border-radius:12px;background:var(--surface-soft);box-shadow:inset 0 0 0 1px var(--line);padding:4px;gap:4px}.segmented button{position:relative;z-index:1;border:0;background:none;color:var(--muted);font-size:12px;min-height:38px;min-width:79px;padding:8px 16px;border-radius:9px;transition:color .2s}.segmented button:hover{color:var(--text)}.segmented button[aria-pressed=true],.segment-glide{background:var(--surface);color:var(--text);font-weight:500;box-shadow:0 1px 2px #0000000f,0 3px 10px -2px #0000001a}.segmented.is-gliding button[aria-pressed=true]{background:none;box-shadow:none}.segment-glide{position:absolute;z-index:0;border-radius:9px;pointer-events:none}.primary,.secondary{position:relative;overflow:hidden;isolation:isolate;border-radius:14px;min-height:50px;padding:13px 19px;font-size:13px;font-weight:500;display:flex;align-items:center;justify-content:space-between;gap:18px;border:1px solid var(--line)}.primary{background:linear-gradient(180deg,var(--primary-top),var(--primary-bottom));color:var(--primary-text);border-color:transparent;box-shadow:inset 0 1px #ffffff26,0 1px 2px #00000026,0 10px 24px -10px #0000006b}.primary:after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(105deg,transparent 35%,#ffffff2e 50%,transparent 65%);transform:translate(-110%);transition:transform .7s var(--ease-out)}.primary:hover:after,.primary:focus-visible:after{transform:translate(110%)}.primary kbd{background:#ffffff1a;border-color:#ffffff26;box-shadow:none;color:#e5e5ea}.secondary{background:var(--glass);color:var(--secondary);box-shadow:inset 0 1px 0 var(--highlight),0 1px 2px #0000000a;-webkit-backdrop-filter:blur(20px) saturate(160%);backdrop-filter:blur(20px) saturate(160%)}.primary:hover,.secondary:hover{transform:translateY(-1px)}.secondary:hover{background:var(--glass-strong);color:var(--text);border-color:var(--line-strong);box-shadow:inset 0 1px 0 var(--highlight),0 6px 18px -8px #00000026}.screen-header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px 0;margin-bottom:30px}.screen-header h1{font-size:28px;font-weight:700;letter-spacing:-.03em;margin:0}.small-brand{font-size:18px;font-weight:650;letter-spacing:-.6px}.back-button{display:flex;align-items:center;gap:13px;border:0;background:transparent;color:var(--muted);min-height:44px;font-size:12px;padding:6px 0 6px 12px}.back-button:hover{color:var(--text)}.game-card,.panel{position:relative;background:var(--glass);border:1px solid var(--line);border-radius:28px;overflow:hidden;-webkit-backdrop-filter:blur(28px) saturate(170%);backdrop-filter:blur(28px) saturate(170%);box-shadow:inset 0 1px 0 var(--highlight),var(--shadow-card)}.save-status{font-size:11px;color:var(--muted);text-align:center;margin:18px 0;line-height:1.9}.sr-only{position:absolute;clip:rect(0,0,0,0);clip-path:inset(50%);height:1px;width:1px;overflow:hidden;white-space:nowrap}@media(max-width:600px){main{width:calc(100% - 32px)}.screen-header{padding:16px 0;margin-bottom:22px}.game-card,.panel{border-radius:18px}.screen-header h1{font-size:23px}.small-brand{font-size:16px}.back-button{font-size:11px;gap:9px}.segmented button{font-size:11px;padding:8px 13px;min-height:38px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}button{transition:background .2s,color .2s,border-color .2s,box-shadow .25s,transform .25s var(--ease-out)}button:active{transform:scale(.97)}@media(prefers-reduced-motion:reduce){button:active{transform:none}}:root{color-scheme:light}body{-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}button,input,textarea{touch-action:manipulation}.icon{width:19px;height:19px;flex:0 0 auto}.small-brand{display:inline-flex;align-items:center;gap:10px}.brand-mark{display:block;width:29px;height:29px;color:var(--text);filter:drop-shadow(0 2px 4px #0000001f)}.brand-mark svg{width:100%;height:100%}@media(max-width:600px){.brand-mark{width:25px;height:25px}}.text-button:hover{color:var(--text)}.text-button{display:inline-flex;align-items:center;gap:10px;font-size:11px;color:var(--muted);border:none;background:none;padding:10px;min-height:44px}.muted-note{color:var(--muted);font-size:11px;line-height:1.8}button:disabled{opacity:.4;cursor:default}@media(max-width:600px){.text-button{font-size:10px;gap:6px}}:root{--reading-scale: 1;--danger: #b4412f;--success-border: #9fd2b7}:root[data-theme=dark]{color-scheme:dark;--text: #f5f5f7;--secondary: #d2d2d7;--muted: #a1a1a6;--background: #050507;--surface: #1c1c1f;--surface-soft: #232327;--line: #ffffff17;--line-strong: #ffffff26;--green: #6ad9a8;--typed-color: #346b51;--accent: #4fd197;--accent-soft: #4fd1971f;--glow: #4fd19759;--glass: #1c1c1fa8;--glass-strong: #2a2a2ed9;--highlight: #ffffff12;--primary-top: #fdfdfd;--primary-bottom: #dcdce1;--primary-text: #1d1d1f;--shadow-card: 0 1px 1px #00000066, 0 12px 32px -12px #000000b3, 0 40px 80px -40px #000000cc;--logo-ink: #050507;--danger: #ff9d8a;--success-border: #3f8a66}:root[data-theme=dark] .primary kbd{color:#48484a;background:#0000000d;border-color:#0000001a}:root[data-theme=dark] .segmented button[aria-pressed=true],:root[data-theme=dark] .segment-glide{background:#3a3a3e;box-shadow:inset 0 1px #ffffff14,0 3px 10px -2px #00000080}:root[data-theme=dark] .is-new-best{border-color:var(--success-border)}:root[data-theme=dark] .has-error #input-status{color:var(--danger)}:root[data-motion=off] *{transition:none!important;animation:none!important}:root[data-motion=off] button:active{transform:none}.quick-controls,.utility-controls{display:flex;justify-content:flex-end;margin-top:14px}.quick-controls .text-button{padding-right:3px}@media(max-width:600px){.utility-controls{margin-top:8px}}input[type=range]{appearance:none;background:transparent;cursor:pointer}input[type=range]::-webkit-slider-runnable-track{height:3px;border-radius:3px;background:var(--line)}input[type=range]::-webkit-slider-thumb{appearance:none;height:18px;width:18px;margin-top:-7.5px;border-radius:50%;background:#fff;box-shadow:0 0 0 .5px #0000002e,0 2px 6px #0003}input[type=range]::-moz-range-track{height:3px;border-radius:3px;background:var(--line)}input[type=range]::-moz-range-thumb{height:18px;width:18px;border:0;border-radius:50%;background:#fff;box-shadow:0 0 0 .5px #0000002e,0 2px 6px #0003}input:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}body{padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right)}:root{scroll-padding-top:16px}@media(display-mode:standalone){.screen-header{padding-top:max(24px,env(safe-area-inset-top))}}.segmented{flex-wrap:wrap}@media(max-width:600px){.segmented{display:flex}.segmented button{flex:1;min-width:0;padding:8px 7px;font-size:10px}}.segment-word{display:inline-block;white-space:nowrap}.back-button,.text-button{border-radius:10px}button.small-brand{border:0;background:none;padding:6px 8px 6px 0;min-height:44px;color:var(--text);border-radius:10px}button.small-brand:hover{opacity:.75}body{position:relative;isolation:isolate;background:var(--background)}body:before,body:after{content:"";position:fixed;pointer-events:none;z-index:-1}body:before{inset:-25vmax;background:radial-gradient(38vmax 30vmax at 22% 18%,var(--aura-1),transparent 70%),radial-gradient(34vmax 28vmax at 82% 26%,var(--aura-2),transparent 70%),radial-gradient(42vmax 32vmax at 58% 88%,var(--aura-3),transparent 72%);animation:aura-drift 38s ease-in-out infinite alternate;transition:opacity .9s var(--ease-out)}body:after{inset:0;opacity:var(--grain-opacity);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .5 0 0 0 0 .5 0 0 0 0 .5 0 0 0 .55 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}:root{--aura-1: #bfe8d4;--aura-2: #d9dcf7;--aura-3: #f3e3d3;--grain-opacity: .16}:root[data-theme=dark]{--aura-1: #0f3b2b;--aura-2: #1b1f45;--aura-3: #241a33;--grain-opacity: .12}:root[data-view=game] body:before{opacity:.55;animation-play-state:paused}@keyframes aura-drift{0%{transform:translateZ(0) rotate(0) scale(1)}50%{transform:translate3d(3vmax,-2vmax,0) rotate(8deg) scale(1.06)}to{transform:translate3d(-3vmax,2vmax,0) rotate(-6deg) scale(1.02)}}@keyframes title-shine{0%{background-position:100% 0}to{background-position:0% 0}}@keyframes caret-blink{0%,45%{opacity:1}55%,to{opacity:.15}}@keyframes halo-breathe{0%,to{opacity:.55;transform:scale(.94)}50%{opacity:.9;transform:scale(1.04)}}@keyframes caret-breathe{0%,40%{opacity:1}70%,to{opacity:.35}}@keyframes badge-shine{0%{background-position:150% 0}to{background-position:-50% 0}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}:root[data-motion=off] *:before,:root[data-motion=off] *:after{animation:none!important;transition:none!important}:root[data-motion=gentle] body:before{animation-duration:80s}.menu-screen{position:relative;width:calc(100% - 48px);max-width:430px;min-height:100svh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:50px 0}.title-mark{position:relative;isolation:isolate;width:76px;height:76px;background:none;color:var(--text);border-radius:16px;line-height:1;text-align:center;font-size:49px;font-weight:700;letter-spacing:-4px;margin-bottom:24px}.menu-screen h1{font-size:clamp(39px,5vw,49px);letter-spacing:-.045em;margin:0 0 15px;font-weight:700;background:linear-gradient(100deg,var(--text) 0 40%,var(--accent) 50%,var(--text) 60% 100%);background-size:250% 100%;background-position:0% 0;-webkit-background-clip:text;background-clip:text;color:transparent;animation:title-shine 2.4s var(--ease-out) .35s both;padding:0 .04em}.title-description{font-size:13px;color:var(--secondary);text-align:center;line-height:2;letter-spacing:.02em;margin:0 0 25px}.menu-buttons{width:100%;max-width:320px;display:flex;flex-direction:column;gap:11px;margin-top:25px}.menu-summary{display:flex;gap:16px;font-size:11px;color:var(--muted);margin:25px 0 0}.best-score{display:flex;align-items:baseline;margin:20px 0 0;font-size:11px;color:var(--muted);padding:10px 18px;border-radius:999px;background:var(--glass);box-shadow:inset 0 0 0 1px var(--line),inset 0 1px 0 var(--highlight)}.best-score strong{font-size:21px;color:var(--text);font-weight:600;letter-spacing:-.02em;margin-left:12px;font-variant-numeric:tabular-nums}.best-score small{font-size:10px;margin-left:6px}.menu-controls{font-size:10px;color:var(--muted);margin:28px 0 0;display:flex;gap:5px;align-items:center}.menu-controls>span{margin:0 4px}.menu-controls kbd{font-size:10px;height:21px;min-width:21px}.app-version{position:absolute;bottom:max(14px,env(safe-area-inset-bottom));margin:0;color:var(--muted);font-size:10px;line-height:1.2;letter-spacing:.04em}.app-version button{appearance:none;border:0;background:none;padding:8px;color:inherit;font:inherit;letter-spacing:inherit;cursor:pointer}@media(max-width:600px){.menu-screen{width:calc(100% - 48px);padding:35px 0}.title-description{font-size:12px}.menu-controls,.menu-summary{font-size:10px}}@media(max-width:360px){.title-description{font-size:11px}}.menu-label{display:inline-flex;align-items:center;gap:13px}.title-mark svg{width:100%;height:100%;filter:drop-shadow(0 14px 22px #0000002e) drop-shadow(0 2px 4px #0000001f)}.menu-buttons .primary{min-height:56px}@media(max-width:600px){.title-mark{width:64px;height:64px;margin-bottom:20px}.menu-screen{padding:32px 0 max(32px,env(safe-area-inset-bottom))}}.menu-auxiliary{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.menu-auxiliary .secondary{min-height:44px;font-size:12px;padding:10px 13px;gap:8px}.menu-auxiliary .menu-label{gap:9px}.title-mark:before{content:"";position:absolute;inset:-45%;z-index:-1;border-radius:50%;background:radial-gradient(closest-side,var(--glow),transparent);filter:blur(6px);animation:halo-breathe 6s ease-in-out infinite}.title-mark .logo-caret{fill:var(--accent);animation:caret-blink 1.1s steps(1,end) infinite}.menu-screen{padding-bottom:calc(max(14px,env(safe-area-inset-bottom)) + 44px)}.game-screen{max-width:900px;padding-bottom:25px}.game-hud{display:flex;justify-content:space-between;align-items:center;padding:29px 35px 0}.question-counter{display:flex;align-items:center;gap:8px;font-variant-numeric:tabular-nums}.question-counter strong{font-size:23px;font-weight:600;letter-spacing:-.02em}.question-counter>span{font-size:13px;color:var(--muted)}.progress-dots{display:flex;gap:6px;margin-left:18px}.progress-dots span{height:5px;width:5px;background:var(--line-strong);border-radius:3px;transition:width .45s var(--ease-spring),background .3s}.progress-dots .current{background:var(--text);width:20px}.progress-dots .done{background:var(--accent)}.live-timer{display:flex;align-items:baseline;gap:7px;font-variant-numeric:tabular-nums}.live-timer>span{font-size:30px;font-weight:600;color:var(--text);letter-spacing:-.03em;transition:color .3s}.question-complete #timer{color:var(--green)}.live-timer small{font-size:12px;color:var(--muted)}.question-body{padding:38px 38px 31px}.sentence{font-size:25px;font-weight:500;letter-spacing:.06em;line-height:2.8;margin:0;overflow-wrap:anywhere}ruby{ruby-position:over}rt{font-size:11px;letter-spacing:.3px;font-weight:400;color:var(--muted);line-height:1.4}.input-wrap{margin:0 32px 26px;border:1px solid var(--line);background:var(--surface-soft);border-radius:10px;overflow:hidden;transition:border-color .15s,box-shadow .15s}.input-wrap:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}.input-wrap textarea{display:block;width:100%;min-height:98px;resize:vertical;border:0;outline:none;padding:18px 21px 8px;background:transparent;color:var(--text);font-size:18px;line-height:1.8;letter-spacing:.7px}.input-wrap textarea::placeholder{color:var(--muted);font-size:15px}.input-meta{display:flex;justify-content:space-between;gap:12px;padding:6px 20px 13px;color:var(--muted);font-size:11px;min-height:34px}.input-meta>span:last-child{white-space:nowrap;font-variant-numeric:tabular-nums}[data-input-method=roman] .input-meta{display:grid;grid-template-columns:minmax(4.5em,1fr) minmax(0,auto) minmax(4.5em,1fr)}[data-input-method=roman] #input-status{grid-column:2;text-align:center}[data-input-method=roman] #character-count{justify-self:end}.has-error .input-wrap{border-color:var(--danger)}.has-error #input-status{color:var(--danger)}.question-complete .input-wrap{border-color:var(--success-border);background:var(--accent-soft)}.question-complete #input-status{color:var(--green)}.game-meta{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding:17px 34px;font-size:11px;color:var(--muted)}.game-meta>span:first-child{display:flex;gap:8px;align-items:center}.status-dot{width:6px;height:6px;border-radius:50%;background:var(--muted)}.status-dot.running{background:var(--accent);box-shadow:0 0 0 3px var(--accent-soft),0 0 10px var(--glow);animation:caret-breathe 1.6s ease-in-out infinite alternate}.game-controls{display:flex;align-items:center;justify-content:space-between;margin:17px 3px 0;font-size:11px;color:var(--muted);gap:12px}.game-controls>span:last-child{display:flex;align-items:center;gap:6px}.control-divider{margin:0 4px;color:var(--line-strong)}@media(min-width:1000px){.game-screen .screen-header{margin-bottom:70px}.game-screen .game-card{min-height:410px}}@media(max-width:600px){.game-hud{padding:23px 23px 0}.question-counter strong{font-size:21px}.question-counter>span{font-size:12px}.progress-dots{margin-left:10px;gap:5px}.live-timer>span{font-size:24px}.question-body{padding:28px 24px 24px}.sentence{font-size:21px;letter-spacing:.6px;line-height:2.8}rt{font-size:10px}.input-wrap{margin:0 20px 22px}.input-wrap textarea{min-height:95px;font-size:17px;padding:16px 16px 7px}.input-wrap textarea::placeholder{font-size:14px}.input-meta{font-size:10px;padding:6px 16px 12px}.game-meta{padding:15px 22px;font-size:10px}.game-controls{font-size:10px;margin-top:13px}.game-controls kbd{font-size:10px;height:22px;min-width:22px}.game-controls .control-divider{margin:0 1px}}@media(max-width:360px){.question-body{padding:27px 20px 20px}.sentence{font-size:19px}.game-controls{font-size:9px}.game-controls>span:last-child{gap:4px}.progress-dots{margin-left:4px}}.precision-track{position:relative;height:2px;background:var(--line)}.precision-track>span{display:block;width:100%;height:100%;background:linear-gradient(90deg,transparent,var(--accent) 40%,var(--green));transform:scaleX(var(--progress, 0));transform-origin:left;transition:transform .22s var(--ease-out)}.precision-track:after{content:"";position:absolute;top:50%;left:calc(var(--progress, 0) * 100%);width:64px;height:14px;margin:-7px 0 0 -64px;border-radius:50%;background:radial-gradient(closest-side at 85% 50%,var(--glow),transparent);opacity:min(1,calc(var(--progress, 0) * 30));transition:left .22s var(--ease-out),opacity .3s;pointer-events:none}.live-timer>.completion-symbol{display:inline-flex;width:22px;height:22px;align-self:center;color:var(--green);opacity:0}.completion-symbol svg{width:100%;height:100%}.question-complete .completion-symbol{opacity:1}.precision-track{margin-top:24px}@media(max-width:600px){.precision-track{margin-top:19px}}.game-screen .sentence{text-align:center;font-size:calc(25px * var(--reading-scale))}@media(max-width:600px){.game-screen .sentence{font-size:calc(21px * var(--reading-scale))}}@media(max-width:360px){.game-screen .sentence{font-size:calc(19px * var(--reading-scale))}}.game-controls>span:first-child{display:inline-flex;align-items:center;gap:10px}.game-controls .text-button{padding:6px 4px;min-height:44px;font-size:10px}:root[data-compact-game=true] .game-screen{padding-bottom:8px}:root[data-compact-game=true] .game-screen .screen-header{margin-bottom:6px;padding:max(6px,env(safe-area-inset-top)) 0 6px}:root[data-compact-game=true] 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