:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#05060f;--panel:#0b0f24db;--panel-solid:#0b0f24;--panel-border:#78a0ff3d;--text:#eef2ff;--text-dim:#aab5d8;--accent:#5ef2ff;--accent-strong:#19c6dc;--accent-2:#ff6bd5;--good:#4ef0a6;--warn:#ffd166;--danger:#ff5d73;--focus:#ffd166;--radius:14px;--font-ui:system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;--font-mono:ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;--font-jp:"Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", Meiryo, "Noto Sans CJK JP", "Noto Sans JP", "Source Han Sans JP", sans-serif}*,:before,:after{box-sizing:border-box}[hidden]{display:none!important}html,body{background:var(--bg);height:100%;color:var(--text);font-family:var(--font-ui);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;margin:0;line-height:1.45;overflow:hidden}[lang=ja]{font-family:var(--font-jp)}kbd{font-family:var(--font-mono);border:1px solid var(--panel-border);background:#ffffff0f;border-bottom-width:2px;border-radius:5px;padding:.05em .4em;font-size:.85em}:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.app{flex-direction:column;height:100dvh;display:flex}.stage{flex:1;min-height:0;position:relative;overflow:hidden}.game-canvas{width:100%;height:100%;display:block;position:absolute;inset:0}.top-bar{z-index:5;padding:max(10px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) 0 max(12px, env(safe-area-inset-left));pointer-events:none;justify-content:space-between;align-items:flex-start;gap:8px;display:flex;position:absolute;top:0;left:0;right:0}.top-bar>*{pointer-events:auto}.hud-stats{flex-wrap:wrap;gap:6px;display:flex}.app[data-screen=menu] .hud-stats,.app[data-screen=gameover] .hud-stats,.app[data-screen=menu] #btn-pause,.app[data-screen=gameover] #btn-pause{visibility:hidden}.hud-item{background:var(--panel);border:1px solid var(--panel-border);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border-radius:10px;min-width:70px;padding:4px 10px 5px;position:relative}.hud-label{letter-spacing:.12em;text-transform:uppercase;color:var(--text-dim);font-size:.66rem;font-weight:600;display:block}.hud-value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;white-space:nowrap;font-size:1.15rem;font-weight:700;display:block}.hud-value small{color:var(--warn);font-size:.75em}.hud-combo.is-active{border-color:#ffd16699;box-shadow:0 0 18px #ffd1662e}.hud-combo.bump{animation:.35s ease-out bump}.combo-timer{background:#ffffff14;border-radius:2px;height:2px;position:absolute;bottom:2px;left:8px;right:8px;overflow:hidden}.combo-timer span{background:var(--warn);transform-origin:0;height:100%;display:block;transform:scaleX(0)}.hud-lives{min-width:120px}.lives-bar{background:#ffffff1a;border-radius:4px;width:100%;height:8px;margin:4px 0 2px;display:block;overflow:hidden}.lives-bar span{background:var(--good);transform-origin:0;height:100%;transition:transform .3s,background-color .3s;display:block}.lives-bar[data-state=warn] span{background:var(--warn)}.lives-bar[data-state=danger] span{background:var(--danger)}.hud-lives-text{font-family:var(--font-mono);color:var(--text-dim);font-size:.75rem}.top-actions{gap:6px;display:flex}.icon-btn{width:44px;height:44px;color:var(--text);background:var(--panel);border:1px solid var(--panel-border);cursor:pointer;border-radius:10px;place-items:center;padding:0;font-size:1.1rem;display:inline-grid}.icon-btn:hover{border-color:var(--accent)}.damage-vignette{z-index:4;pointer-events:none;opacity:0;position:absolute;inset:0;box-shadow:inset 0 0 120px 30px #ff32508c}.damage-vignette.is-hit{animation:.6s ease-out vignette}.level-banner{z-index:6;text-align:center;pointer-events:none;background:#080b1ed1;border:1px solid #ffd16680;border-radius:18px;width:min(92%,520px);padding:14px 20px 16px;position:absolute;top:16%;left:50%;transform:translate(-50%);box-shadow:0 0 40px #ffd16626}.level-banner.is-showing{animation:3.2s ease-out forwards banner-in}.level-banner-kicker{letter-spacing:.3em;text-transform:uppercase;color:var(--warn);margin:0;font-size:.8rem;font-weight:700}.level-banner-title{margin:2px 0 0;font-size:clamp(1.4rem,4vw,2rem);font-weight:800}.level-banner-desc{color:var(--text-dim);margin:2px 0 0}.level-banner-kana{flex-wrap:wrap;justify-content:center;gap:8px;margin:12px 0 0;padding:0;list-style:none;display:flex}.level-banner-kana li{background:#5ef2ff14;border:1px solid #5ef2ff59;border-radius:10px;justify-items:center;min-width:52px;padding:6px 8px;display:grid}.level-banner-kana span{font-size:1.8rem;line-height:1.1}.level-banner-kana small{font-family:var(--font-mono);color:var(--accent);font-size:.95rem}.combo-pop{z-index:6;letter-spacing:.06em;color:var(--warn);text-shadow:0 0 18px #ffd16699,0 2px #3a2400;white-space:nowrap;opacity:0;pointer-events:none;font-size:clamp(1.4rem,5vw,2.4rem);font-weight:900;position:absolute;top:30%;left:50%;transform:translate(-50%)}.combo-pop.is-popping{animation:1s ease-out forwards combo-pop}.row-flash{z-index:6;text-align:center;pointer-events:none;background:#1e0812e0;border:1px solid #ff5d738c;border-radius:14px;max-width:calc(100% - 24px);padding:8px 14px 10px;position:absolute;bottom:14px;left:50%;transform:translate(-50%);box-shadow:0 0 30px #ff5d7333}.row-flash.is-showing{animation:2.4s ease-out forwards row-flash}.row-flash-title{letter-spacing:.2em;color:#ff8a9a;margin:0 0 6px;font-size:.75rem;font-weight:700}.row-flash-kana{justify-content:center;gap:6px;margin:0;padding:0;list-style:none;display:flex}.row-flash-kana li{border:1px solid #ffffff24;border-radius:9px;justify-items:center;min-width:46px;padding:4px 6px;display:grid}.row-flash-kana li.is-missed{border-color:var(--danger);background:#ff5d7338;box-shadow:0 0 14px #ff5d7373}.row-flash-kana span{font-size:1.5rem;line-height:1.15}.row-flash-kana small{font-family:var(--font-mono);color:var(--accent);font-size:.9rem;font-weight:700}.row-flash-kana li.is-missed small{color:#fff}.screen{z-index:10;background:radial-gradient(#05060f59,#05060fd1);place-items:center;padding:72px 16px 16px;display:grid;position:absolute;inset:0;overflow-y:auto}.panel{background:var(--panel);border:1px solid var(--panel-border);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:20px;width:min(560px,100%);padding:24px;animation:.35s ease-out panel-in;box-shadow:0 20px 60px #00000080,inset 0 0 0 1px #ffffff05}.panel-small{text-align:center;width:min(360px,100%)}.title{text-align:center;margin:0;line-height:1.05;display:grid}.title-jp{letter-spacing:.2em;color:var(--accent);font-size:clamp(1rem,3.5vw,1.25rem);font-weight:700}.title-main{letter-spacing:.02em;background:linear-gradient(90deg, var(--accent), #b8a6ff 55%, var(--accent-2));color:#0000;-webkit-background-clip:text;background-clip:text;font-size:clamp(2.2rem,9vw,3.4rem);font-weight:900}.tagline{text-align:center;color:var(--text-dim);margin:10px 0 18px}.tagline strong{color:var(--text)}.records{grid-template-columns:1fr 1fr;gap:8px;margin-bottom:16px;display:grid}.records>div{text-align:center;border:1px solid var(--panel-border);background:#ffffff0a;border-radius:12px;padding:8px 12px}.records-label{letter-spacing:.1em;text-transform:uppercase;color:var(--text-dim);font-size:.72rem;display:block}.records-value{font-family:var(--font-mono);font-size:1.3rem;font-weight:700}.menu-row{justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px;display:flex}.menu-row label{font-weight:600}select{max-width:62%;min-height:44px;font:inherit;color:var(--text);background:var(--panel-solid);border:1px solid var(--panel-border);border-radius:10px;padding:8px 12px}.btn{min-height:44px;font:inherit;color:var(--text);border:1px solid var(--panel-border);cursor:pointer;background:#ffffff0f;border-radius:12px;padding:10px 20px;font-weight:700;transition:transform .12s,border-color .15s,background-color .15s}.btn:hover{border-color:var(--accent);background:#5ef2ff14}.btn:active{transform:translateY(1px)scale(.99)}.btn-primary{color:#03121a;background:linear-gradient(180deg, var(--accent), var(--accent-strong));border-color:#0000;box-shadow:0 6px 24px #5ef2ff40}.btn-primary:hover{background:linear-gradient(180deg, #8ff6ff, var(--accent))}.btn-large{letter-spacing:.06em;width:100%;min-height:54px;font-size:1.25rem}.btn-ghost{background:0 0}.btn-small{min-height:36px;color:var(--text-dim);padding:6px 12px;font-size:.85rem;font-weight:600}.practice{border:1px dashed var(--panel-border);background:#ffffff08;border-radius:12px;margin-top:14px;padding:12px}.practice-title{margin:0 0 8px;font-weight:700}.practice-row{gap:8px;display:flex}.practice-row select{flex:1;min-width:0;max-width:none}.practice-hint{color:var(--text-dim);margin:6px 0 0;font-size:.8rem}.app[data-mode=practice] .gameover-title{color:var(--accent);text-shadow:0 0 24px #5ef2ff73}.keyboard-notice{color:var(--warn);background:#ffd16614;border:1px solid #ffd16659;border-radius:10px;margin:14px 0 0;padding:10px 12px;font-size:.9rem}.fold{border-top:1px solid var(--panel-border);margin-top:14px;padding-top:10px}.fold summary{cursor:pointer;min-height:32px;font-weight:700}.howto{color:var(--text-dim);margin:8px 0 0;padding-left:1.2em}.howto li+li{margin-top:4px}.legend{flex-wrap:wrap;gap:8px;margin:8px 0;font-size:.78rem;display:flex}.legend-item{border:1px solid;border-radius:999px;padding:2px 8px}.kana-grid{grid-template-columns:repeat(5,1fr);gap:4px;margin-bottom:10px;display:grid}.kana-cell{border:1px solid;border-radius:8px;justify-items:center;padding:4px 2px;display:grid}.kana-cell-empty{border-color:#0000}.kana-cell-kana{font-size:1.35rem;line-height:1.15}.kana-cell-romaji{font-family:var(--font-mono);color:var(--text-dim);font-size:.72rem}.mastery-new{color:var(--text-dim);border-color:#ffffff24}.mastery-weak{background:#ff5d731f;border-color:#ff5d7399}.mastery-ok{background:#ffd16614;border-color:#ffd1668c}.mastery-good{background:#4ef0a61a;border-color:#4ef0a699}.toggle{cursor:pointer;align-items:center;gap:10px;min-height:44px;margin-top:12px;display:flex}.panel-small .toggle{justify-content:center}.toggle input{width:20px;height:20px;accent-color:var(--accent)}.screen-title{letter-spacing:.2em;text-transform:uppercase;margin:0 0 16px;font-size:2rem}.actions{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:18px;display:flex}.actions .btn{flex:140px}.gameover-title{text-align:center;letter-spacing:.12em;color:var(--danger);text-shadow:0 0 24px #ff5d7380;margin:0;font-size:clamp(2.2rem,10vw,3.4rem);font-weight:900}.new-record{text-align:center;color:var(--warn);margin:4px 0 0;font-weight:800;animation:1.2s ease-in-out infinite pulse}.stats-grid{grid-template-columns:repeat(2,1fr);gap:8px;margin:18px 0 0;display:grid}.stat{border:1px solid var(--panel-border);background:#ffffff0a;border-radius:12px;padding:8px 12px}.stat-main{text-align:center;grid-column:1/-1}.stat dt{letter-spacing:.08em;text-transform:uppercase;color:var(--text-dim);font-size:.72rem}.stat dd{font-family:var(--font-mono);margin:0;font-size:1.3rem;font-weight:700}.stat-main dd{color:var(--accent);font-size:2.2rem}.review{margin-top:18px}.review h3{letter-spacing:.08em;text-transform:uppercase;color:var(--warn);margin:0 0 8px;font-size:1rem}.review-list{gap:6px;margin:0;padding:0;list-style:none;display:grid}.review-list li{background:#ff5d7312;border:1px solid #ff5d734d;border-radius:10px;grid-template-columns:auto auto 1fr;align-items:center;gap:12px;padding:6px 12px;display:grid}.review-list li.review-empty{text-align:center;color:var(--good);background:#4ef0a614;border-color:#4ef0a659;display:block}.review-kana{font-size:1.8rem;line-height:1.1}.review-romaji{font-family:var(--font-mono);color:var(--accent);font-size:1.05rem;font-weight:700}.review-info{color:var(--text-dim);justify-self:end;font-size:.85rem}.controls{z-index:8;padding:10px max(16px, env(safe-area-inset-right)) max(10px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));border-top:1px solid var(--panel-border);background:linear-gradient(#070918f2,#05060ffa);position:relative}.app[data-screen=menu] .controls .input-row,.app[data-screen=menu] .controls .input-hint{visibility:hidden}.app[data-screen=menu] .virtual-keyboard,.app[data-screen=gameover] .virtual-keyboard{display:none}.input-row{align-items:center;gap:8px;max-width:560px;margin:0 auto;display:flex}.input-prompt{font-family:var(--font-mono);color:var(--accent);font-size:1.8rem;font-weight:700}.answer-input{min-width:0;height:54px;font-family:var(--font-mono);letter-spacing:.12em;color:var(--text);caret-color:var(--accent);background:#0a0e22f2;border:2px solid #5ef2ff73;border-radius:12px;flex:1;padding:0 16px;font-size:1.7rem;font-weight:700;transition:border-color .15s,box-shadow .15s}.answer-input::placeholder{letter-spacing:.02em;color:#aab5d899;font-size:1.1rem;font-weight:400}.answer-input:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 4px #5ef2ff33,0 0 24px #5ef2ff33}.answer-input:focus-visible{outline:none}.answer-input:disabled{opacity:.55}.answer-input.is-ok{animation:.3s ease-out input-ok}.answer-input.is-error{animation:.35s ease-out input-error}.input-hint{text-align:center;max-width:560px;color:var(--text-dim);margin:6px auto 0;font-size:.8rem}.virtual-keyboard{gap:6px;max-width:560px;margin:8px auto 0;display:grid}.vk-row{gap:6px;display:flex}.vk-key{min-width:0;min-height:46px;font-family:var(--font-mono);color:var(--text);border:1px solid var(--panel-border);touch-action:manipulation;-webkit-user-select:none;user-select:none;cursor:pointer;background:#ffffff12;border-radius:10px;flex:1;padding:0;font-size:1.2rem;font-weight:700}.vk-key:active{background:#5ef2ff40}.vk-vowel{color:var(--accent);border-color:#5ef2ff73}.vk-action{color:var(--warn);flex:1.3}@keyframes bump{40%{transform:scale(1.12)}}@keyframes vignette{0%{opacity:1}to{opacity:0}}@keyframes banner-in{0%{opacity:0;transform:translate(-50%)translateY(-12px)scale(.92)}10%{opacity:1;transform:translate(-50%)translateY(0)scale(1.03)}16%{transform:translate(-50%)scale(1)}85%{opacity:1}to{opacity:0;transform:translate(-50%)translateY(-6px)}}@keyframes combo-pop{0%{opacity:0;transform:translate(-50%,10px)scale(.6)}20%{opacity:1;transform:translate(-50%)scale(1.15)}35%{transform:translate(-50%)scale(1)}to{opacity:0;transform:translate(-50%,-30px)scale(1)}}@keyframes row-flash{0%{opacity:0;transform:translate(-50%)translateY(10px)}8%{opacity:1;transform:translate(-50%)translateY(0)}80%{opacity:1}to{opacity:0}}@keyframes panel-in{0%{opacity:0;transform:translateY(12px)scale(.98)}to{opacity:1;transform:none}}@keyframes pulse{50%{opacity:.55}}@keyframes input-ok{0%{border-color:var(--good);box-shadow:0 0 0 6px #4ef0a659}}@keyframes input-error{0%,to{transform:translate(0)}20%{border-color:var(--danger);transform:translate(-8px)}40%{border-color:var(--danger);transform:translate(7px)}60%{border-color:var(--danger);transform:translate(-5px)}80%{transform:translate(3px)}}.reduce-motion *,.reduce-motion :before,.reduce-motion :after{transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}.reduce-motion .level-banner.is-showing,.reduce-motion .row-flash.is-showing{animation:none!important}.reduce-motion .answer-input.is-error{border-color:var(--danger);animation:none!important}@media (width<=640px){.hud-item{min-width:0;padding:3px 8px 4px}.hud-label{letter-spacing:.08em;font-size:.58rem}.hud-value{font-size:.95rem}.hud-lives{min-width:84px}.icon-btn{width:40px;height:40px}.panel{padding:18px 16px}.answer-input{height:48px;font-size:1.4rem}.input-hint{display:none}.review-list li{grid-template-columns:auto auto}.review-info{grid-column:1/-1;justify-self:start}}@media (height<=520px){.level-banner{padding:8px 14px;top:8%}.level-banner-kana span{font-size:1.3rem}.input-hint{display:none}.vk-key{min-height:38px}}