:root{--color-faded: #9A8F80;--color-fire: #C01B00;--color-fire-muted: #A3341C;--color-fire-tint: #FDF1EE;--color-fire-wash: #F6E7E1;--color-hairline: rgba(60,40,20,.08);--color-ink: #1D1A16;--color-ink-2: #3A352E;--color-line: #CFC6B8;--color-muted: #6F665B;--color-on-fire-fill: rgba(255,255,255,.16);--color-on-fire-fill-soft: rgba(255,255,255,.14);--color-on-fire-rule: rgba(255,255,255,.3);--color-on-fire-strong: rgba(255,255,255,.88);--color-paper: #FBF8F3;--color-paper-2: #E7E1D6;--color-paper-button: #EDE6DA;--color-paper-raised: #FFFDF9;--color-right-fill: #D3EEDC;--color-right-ink: #0B5A2C;--color-scrim: rgba(12,6,4,.62);--color-kimono-ai: #1F3558;--color-kimono-kakishibu: #8A3B1C;--color-kimono-persimmon: #EEA57A;--color-kimono-wash: #E4E7F2;--color-kutani-aubergine: #553366;--color-kutani-glaze: #1E4A3A;--color-kutani-ochre: #E2B13A;--color-kutani-wash: #F1E6F3;--color-water: #1356A7;--color-water-deep: #0E407D;--color-water-wash: #E3ECF7;--color-white: #FFFFFF;--color-wrong-fill: #F9DCD5;--color-wrong-ink: #7E1400;--color-yellow: #FFD60A;--color-yellow-ink: #3A2A00;--color-yellow-soft: #FFE36B;--ui-bg: var(--color-paper-2);--ui-surface: var(--color-paper);--ui-surface-raised: var(--color-paper-raised);--ui-control: var(--color-paper-button);--ui-text: var(--color-ink);--ui-text-2: var(--color-ink-2);--ui-text-muted: var(--color-muted);--ui-chevron: var(--color-faded);--ui-line: var(--color-line);--ui-hairline: var(--color-hairline);--ui-accent: var(--color-fire);--ui-accent-text: var(--color-fire-muted);--ui-accent-wash: var(--color-fire-wash);--ui-selected-row: var(--color-fire-tint);--ui-wrong-fill: var(--color-wrong-fill);--ui-wrong-ink: var(--color-wrong-ink);--ui-right-fill: var(--color-right-fill);--ui-right-ink: var(--color-right-ink);--ui-danger: var(--color-wrong-ink);--ui-placeholder-fill: var(--color-yellow-soft);--ui-placeholder-text: var(--color-yellow-ink);--ui-scrim: var(--color-scrim);--font-ui: Inter, Geist, "Noto Sans JP", "Noto Sans CJK JP", system-ui, sans-serif;--font-display: Geist, Inter, system-ui, -apple-system, sans-serif;--font-ja: "Noto Sans JP", "Noto Sans CJK JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", sans-serif;--size-h1: 64px;--size-h1-mobile: 44px;--size-h2: 44px;--size-h2-mobile: 32px;--size-h3: 22px;--size-h3-mobile: 19px;--size-pitch: 32px;--size-pitch-mobile: 24px;--size-lede: 19px;--size-lede-mobile: 17px;--size-body: 17px;--size-body-mobile: 16px;--size-small: 15px;--size-small-mobile: 14px;--size-kicker: 14px;--size-kicker-mobile: 13px;--space-half: 2px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px;--space-14: 56px;--space-16: 64px;--space-18: 72px;--space-24: 96px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 14px;--radius-xl: 18px;--radius-2xl: 24px;--radius-3xl: 28px;--radius-4xl: 32px;--radius-5xl: 40px;--radius-full: 999px;--shadow-ring: 0 0 0 1px rgba(60,40,20,.08);--shadow-e1: 0 1px 2px rgba(80,20,0,.06);--shadow-e2: 0 10px 24px rgba(40,30,20,.08);--shadow-e3: 0 18px 40px rgba(40,30,20,.16);--shadow-e4: 0 24px 60px rgba(40,30,20,.12);--shadow-device: 0 30px 60px rgba(40,30,20,.2);--shadow-fire-sm: 0 8px 20px rgba(192,27,0,.25);--shadow-fire-lg: 0 24px 60px rgba(120,20,0,.22);--shadow-tab-bar: 0 6px 24px rgba(0,0,0,.1), 0 0 0 .5px rgba(0,0,0,.06);--tap-target-min: 44px;--answer-bar-height: 144px;--answer-bar-pad-top: 16px;--answer-bar-pad-bottom: 14px;--answer-bar-gap: 10px}:root,[data-theme=paper]{--card-screen: var(--color-paper-2);--card-bg: var(--color-paper);--card-card-text: var(--color-ink);--card-headword: var(--color-ink);--card-kana: var(--color-ink);--card-romaji: var(--color-muted);--card-meaning-number: var(--color-muted);--card-rule: var(--color-line);--card-speaker-fill: var(--color-fire-wash);--card-speaker-icon: var(--color-fire);--card-chip-fill: var(--color-paper-button);--card-chip-text: var(--color-ink-2);--card-pos-fill: var(--color-yellow);--card-pos-text: var(--color-yellow-ink);--card-example-text: var(--color-ink);--card-example-translation: var(--color-ink-2)}[data-theme=fire]{--card-screen: var(--color-paper-2);--card-bg: var(--color-fire);--card-card-text: var(--color-white);--card-headword: var(--color-yellow);--card-kana: var(--color-white);--card-romaji: var(--color-on-fire-strong);--card-meaning-number: var(--color-on-fire-strong);--card-rule: var(--color-on-fire-rule);--card-speaker-fill: var(--color-on-fire-fill);--card-speaker-icon: var(--color-white);--card-chip-fill: var(--color-on-fire-fill-soft);--card-chip-text: var(--color-white);--card-pos-fill: var(--color-yellow);--card-pos-text: var(--color-yellow-ink);--card-example-text: var(--color-white);--card-example-translation: var(--color-on-fire-strong)}[data-theme=water]{--card-screen: var(--color-paper-2);--card-bg: var(--color-water);--card-card-text: var(--color-white);--card-headword: var(--color-yellow);--card-kana: var(--color-white);--card-romaji: var(--color-on-fire-strong);--card-meaning-number: var(--color-on-fire-strong);--card-rule: var(--color-on-fire-rule);--card-speaker-fill: var(--color-on-fire-fill);--card-speaker-icon: var(--color-white);--card-chip-fill: var(--color-on-fire-fill-soft);--card-chip-text: var(--color-white);--card-pos-fill: var(--color-yellow);--card-pos-text: var(--color-yellow-ink);--card-example-text: var(--color-white);--card-example-translation: var(--color-on-fire-strong)}[data-theme=kimono]{--card-screen: var(--color-paper-2);--card-bg: var(--color-kimono-persimmon);--card-card-text: var(--color-kimono-ai);--card-headword: var(--color-kimono-ai);--card-kana: var(--color-kimono-ai);--card-romaji: var(--color-kimono-ai);--card-meaning-number: var(--color-kimono-ai);--card-rule: var(--color-kimono-kakishibu);--card-speaker-fill: var(--color-paper-raised);--card-speaker-icon: var(--color-kimono-ai);--card-chip-fill: var(--color-paper-raised);--card-chip-text: var(--color-kimono-ai);--card-pos-fill: var(--color-yellow);--card-pos-text: var(--color-yellow-ink);--card-example-text: var(--color-kimono-ai);--card-example-translation: var(--color-ink-2)}[data-theme=kutani]{--card-screen: var(--color-paper-2);--card-bg: var(--color-kutani-glaze);--card-card-text: var(--color-paper);--card-headword: var(--color-kutani-ochre);--card-kana: var(--color-paper);--card-romaji: var(--color-on-fire-strong);--card-meaning-number: var(--color-on-fire-strong);--card-rule: var(--color-kutani-ochre);--card-speaker-fill: var(--color-on-fire-fill);--card-speaker-icon: var(--color-paper);--card-chip-fill: var(--color-on-fire-fill-soft);--card-chip-text: var(--color-paper);--card-pos-fill: var(--color-kutani-ochre);--card-pos-text: var(--color-yellow-ink);--card-example-text: var(--color-paper);--card-example-translation: var(--color-on-fire-strong)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--ui-bg);color:var(--ui-text);font-family:var(--font-ui);font-size:var(--size-body-mobile);line-height:1.45}button,input{font:inherit;color:inherit}button{cursor:pointer}img{display:block;max-width:100%}:focus{outline:none}:focus-visible{outline:2px solid var(--color-fire);outline-offset:3px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}.shell{width:min(1280px,100%);margin:0 auto;padding:20px 20px 32px}.skip{position:absolute;left:16px;top:-48px;background:var(--ui-surface);color:var(--ui-text);padding:8px 12px;border-radius:var(--radius-md);z-index:10}.skip:focus{top:12px}.home-title{display:flex;align-items:center;gap:12px;margin:8px 0 12px;font-family:var(--font-display);font-weight:800;font-size:var(--size-h1-mobile);letter-spacing:-.045em;line-height:.95}.home-title img{width:56px;height:56px;border-radius:14px;flex:none}.flash{white-space:nowrap}.lede{margin:0 0 24px;font-size:var(--size-lede-mobile);color:var(--ui-text-muted)}.kicker{margin:0;font-size:var(--size-kicker-mobile);font-weight:600;color:var(--ui-text-muted)}.section-kicker{margin-bottom:8px;color:var(--ui-text-2)}.note{margin:0 0 12px;color:var(--ui-text-muted);font-size:var(--size-small-mobile)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;min-height:52px;padding:12px 18px;border:0;border-radius:var(--radius-full);font-weight:700;line-height:1.3;text-align:center;white-space:normal}.btn-primary{background:var(--color-fire);color:var(--color-white)}.btn-quiet{background:var(--ui-surface);color:var(--ui-text);box-shadow:var(--shadow-ring)}.home-col,.end-panel{display:flex;flex-direction:column;gap:12px}.home-grid{display:flex;flex-direction:column;gap:16px}.text-link{display:inline-flex;align-items:center;gap:4px;margin-top:20px;min-height:44px;padding:0;border:0;background:transparent;color:var(--ui-text-2);font-weight:600}.band,.row{display:flex;align-items:center;gap:12px;width:100%;min-height:52px;padding:12px 14px;border:0;background:var(--ui-surface);color:var(--ui-text);text-align:left;box-shadow:var(--shadow-ring)}.band{border-radius:var(--radius-2xl);background:var(--color-fire-tint)}.band strong{display:block;color:var(--ui-accent-text)}.band .label span{color:var(--ui-text-2);font-size:var(--size-small-mobile)}.row{border-radius:0;box-shadow:none}.row svg,.band svg,.btn svg,.text-link svg{flex:none}.home-col .row{border-radius:var(--radius-2xl);box-shadow:var(--shadow-ring)}.label{flex:1;min-width:0;display:flex;flex-direction:column;align-items:flex-start;gap:2px}.name{font-weight:600}.count{color:var(--ui-text-muted);font-size:var(--size-small-mobile)}.group{background:var(--ui-surface);border-radius:var(--radius-2xl);box-shadow:var(--shadow-ring);overflow:hidden}.group .row+.row{box-shadow:inset 0 1px 0 var(--ui-hairline)}.group-title{margin:0 0 8px;font-size:var(--size-h3-mobile);font-weight:700}.group-block{margin-bottom:16px}.set-section{margin-top:28px}.strip{display:block;width:72px;height:6px;flex:none;overflow:hidden;border-radius:var(--radius-full);background:var(--color-paper-button)}.strip .unseen{fill:var(--color-line)}.strip .learning{fill:var(--color-yellow)}.strip .learned{fill:var(--color-right-ink)}.save-note{margin:8px 0 0;color:var(--ui-wrong-ink)}.storage-banner{display:flex;flex-direction:column;gap:12px;margin-bottom:16px;padding:12px 14px;border-radius:var(--radius-lg);background:var(--ui-wrong-fill);color:var(--ui-wrong-ink)}.storage-banner p{margin:0}.skeleton{height:52px;margin-bottom:8px;border-radius:var(--radius-lg);background:var(--color-paper-button)}.error{display:flex;flex-direction:column;gap:12px;padding:16px;border-radius:var(--radius-xl);background:var(--ui-wrong-fill);color:var(--ui-wrong-ink)}.error p{margin:0}.topbar{display:flex;align-items:center;gap:8px;min-height:44px;margin-bottom:16px}.topbar h1{flex:1;min-width:0;margin:0;font-family:var(--font-ui);font-size:var(--size-body-mobile);font-weight:700;letter-spacing:0;line-height:1.25}.topbar img{width:28px;height:28px;border-radius:8px}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;padding:0;border:0;border-radius:var(--radius-full);background:transparent;color:var(--ui-text)}.topbar-end{position:relative;display:flex;align-items:center;gap:8px}.theme-pop{position:absolute;top:calc(100% + 8px);right:0;z-index:20;min-width:220px;padding:12px;border-radius:var(--radius-2xl);background:var(--ui-surface);color:var(--ui-text);box-shadow:var(--shadow-ring),var(--shadow-e2)}.theme-trigger{position:relative;background:var(--reach-wash, var(--ui-control));color:var(--reach-accent, var(--ui-text))}.study[data-theme=paper] .theme-trigger{box-shadow:0 0 0 1.5px var(--color-line)}.theme-dot{position:absolute;right:6px;bottom:6px;width:8px;height:8px;border-radius:var(--radius-full);background:var(--reach-dot, var(--color-ink));box-shadow:0 0 0 2px var(--ui-bg)}.theme-pop[hidden]{display:none!important}.theme-pop-title{margin:0 4px 8px;color:var(--ui-text-muted);font-size:13px;font-weight:600}.themes{display:flex;flex-direction:column;gap:4px}.themes button{display:flex;align-items:center;gap:10px;width:100%;min-height:44px;padding:0 12px;border:0;border-radius:var(--radius-lg);background:transparent;color:var(--ui-text);font-weight:600;text-align:left}.themes button:hover,.themes button[aria-checked=true]{background:var(--ui-control)}.theme-check{display:inline-flex;margin-left:auto;color:var(--color-fire)}.swatch{width:18px;height:18px;flex:none;border-radius:var(--radius-full);box-shadow:var(--shadow-ring)}.swatch-paper{background:var(--color-paper);box-shadow:0 0 0 1.5px var(--color-line)}.swatch-fire{background:var(--color-fire)}.swatch-water{background:var(--color-water)}.swatch-kimono{background:var(--color-kimono-persimmon)}.swatch-kutani{background:var(--color-kutani-glaze)}.card{position:relative;min-height:280px;padding:28px 24px 32px;border-radius:var(--radius-4xl);background:var(--card-bg);color:var(--card-card-text)}.card[data-theme=paper]{box-shadow:var(--shadow-ring),var(--shadow-e2)}.card[data-theme=fire]{box-shadow:var(--shadow-fire-lg)}.card[data-theme=water]{box-shadow:var(--shadow-e3)}.card[data-theme=kimono]{box-shadow:var(--shadow-ring),var(--shadow-e2)}.card[data-theme=kutani]{box-shadow:var(--shadow-e3)}.card-decor{display:none;pointer-events:none}.card[data-theme=kimono] .card-decor{display:block;position:absolute;top:0;right:0;left:0;height:44px;border-radius:var(--radius-4xl) var(--radius-4xl) 0 0;background:url(/textures/kimono-seigaiha.svg) left top / 48px 44px repeat-x}.card[data-theme=kutani] .card-decor{display:block;position:absolute;top:3px;right:3px;bottom:3px;left:3px;border:1.25px solid color-mix(in srgb,var(--color-kutani-ochre) 70%,transparent);border-radius:calc(var(--radius-4xl) - 3px)}.card[data-theme=kutani] .card-decor:after{content:"";position:absolute;top:3px;right:3px;bottom:3px;left:3px;border:.75px solid color-mix(in srgb,var(--color-kutani-ochre) 70%,transparent);border-radius:calc(var(--radius-4xl) - 6px)}.water-bar{display:none}.card[data-theme=water] .water-bar{display:block;height:14px;margin-bottom:20px;border-radius:var(--radius-full);background:var(--color-water-deep);position:relative}.card[data-theme=water] .water-bar:after{content:"";position:absolute;top:4px;right:4px;bottom:4px;left:4px;border-radius:inherit;background:var(--color-white)}.hw-box{width:100%;overflow:hidden}.hw{margin:0;font-family:var(--font-ja);font-weight:900;font-size:96px;line-height:1.05;white-space:nowrap;color:var(--card-headword)}.kana,.kana-more,.example-ja{font-family:var(--font-ja)}.kana{margin:16px 0 0;font-size:30px;font-weight:600;color:var(--card-kana)}.kana-more,.romaji{margin:4px 0 0;font-size:17px;color:var(--card-romaji)}.speaker{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;margin-top:12px;border:0;border-radius:var(--radius-full);background:var(--card-speaker-fill);color:var(--card-speaker-icon)}.chip{display:inline-flex;align-items:center;gap:6px;min-height:44px;margin-top:16px;padding:0 14px;border:0;border-radius:var(--radius-full);background:var(--card-chip-fill);color:var(--card-chip-text);font-size:13px;font-weight:600}.pos{display:inline-flex;align-items:center;min-height:24px;margin-top:16px;padding:0 10px;border-radius:var(--radius-full);background:var(--card-pos-fill);color:var(--card-pos-text);font-size:13px;font-weight:600}.meaning,.meanings{margin:12px 0 0;padding:0;font-size:19px;font-weight:600;color:var(--card-card-text)}.meanings{list-style:none}.meanings li{display:flex;gap:8px;margin-top:8px}.num{color:var(--card-meaning-number);min-width:1.2em}.example-ja{margin:16px 0 0;font-size:19px;color:var(--card-example-text)}.example-en{margin:6px 0 0;font-size:15px;color:var(--card-example-translation)}.ex-mark{text-decoration:underline;text-decoration-color:var(--color-fire);text-decoration-thickness:2px;text-underline-offset:5px;background:none;color:inherit}[data-theme=fire] .ex-mark,[data-theme=water] .ex-mark{padding:0 3px;border-radius:4px;background:var(--color-yellow-soft);color:var(--color-yellow-ink);text-decoration:none}[data-theme=kimono] .ex-mark{text-decoration-color:var(--color-kimono-kakishibu)}[data-theme=kutani] .ex-mark{padding:0 3px;border-radius:4px;background:var(--color-kutani-ochre);color:var(--color-yellow-ink);text-decoration:none}.keyboard-hint{display:none;margin:8px 0 0;color:var(--ui-text-2);font-size:var(--size-small-mobile)}.keyboard-hint kbd{display:inline-block;margin:0 1px;padding:0 6px;border:0;border-radius:6px;background:var(--reach-wash, var(--color-paper-button));color:var(--reach-accent, var(--color-ink));font-family:inherit;font-size:13px;font-weight:700;line-height:1.35;vertical-align:1px}.answer-bar{box-sizing:border-box;display:flex;height:calc(var(--answer-bar-height) + env(safe-area-inset-bottom,0px));padding:var(--answer-bar-pad-top) 16px calc(var(--answer-bar-pad-bottom) + env(safe-area-inset-bottom,0px))}.slot,.choices,.show-answer{height:100%}.slot{display:flex;flex:1}.choices{display:flex;gap:var(--answer-bar-gap);width:100%}.choice,.show-answer{border:0;border-radius:var(--radius-3xl);font-weight:700;font-size:17px}.show-answer{display:inline-flex;align-items:center;justify-content:center;gap:10px;width:100%;background:var(--show-answer-bg, var(--color-fire));color:var(--color-white);box-shadow:var(--shadow-e1),var(--shadow-e2)}.show-answer-key{display:none;padding:2px 8px;border-radius:6px;background:var(--color-on-fire-fill);color:var(--color-white);font-family:inherit;font-size:13px;font-weight:700;line-height:1.35}.choice{display:inline-flex;flex:1;align-items:center;justify-content:center;gap:8px;min-height:44px}.choice.wrong{background:var(--choice-wrong-bg, var(--color-paper-raised));color:var(--choice-wrong-ink, var(--color-ink));box-shadow:0 0 0 1.5px var(--color-line)}.choice.right{background:var(--choice-right-bg, var(--color-right-fill));color:var(--choice-right-ink, var(--color-right-ink));box-shadow:var(--shadow-e1),var(--shadow-e2)}.choice-badge{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;flex:none;border-radius:var(--radius-full);color:var(--color-white)}.choice.wrong .choice-badge{background:var(--color-wrong-ink)}.choice.right .choice-badge{background:var(--color-right-ink)}.study[data-theme=paper]{--reach-wash: var(--color-paper-button);--reach-accent: var(--color-ink);--reach-dot: var(--color-ink-2);--show-answer-bg: var(--color-fire);--choice-wrong-bg: var(--color-paper-raised);--choice-wrong-ink: var(--color-ink);--choice-right-bg: var(--color-right-fill);--choice-right-ink: var(--color-right-ink)}.study[data-theme=fire]{--reach-wash: var(--color-fire-wash);--reach-accent: var(--color-fire-muted);--reach-dot: var(--color-fire);--show-answer-bg: var(--color-fire);--choice-wrong-bg: var(--color-fire-wash);--choice-wrong-ink: var(--color-ink);--choice-right-bg: var(--color-yellow);--choice-right-ink: var(--color-yellow-ink)}.study[data-theme=water]{--reach-wash: var(--color-water-wash);--reach-accent: var(--color-water);--reach-dot: var(--color-water);--show-answer-bg: var(--color-water-deep);--choice-wrong-bg: var(--color-water-wash);--choice-wrong-ink: var(--color-ink);--choice-right-bg: var(--color-yellow);--choice-right-ink: var(--color-yellow-ink)}.study[data-theme=kimono]{--reach-wash: var(--color-kimono-wash);--reach-accent: var(--color-kimono-ai);--reach-dot: var(--color-kimono-ai);--show-answer-bg: var(--color-kimono-ai);--choice-wrong-bg: var(--color-kimono-wash);--choice-wrong-ink: var(--color-ink);--choice-right-bg: var(--color-kimono-ai);--choice-right-ink: var(--color-white)}.study[data-theme=kutani]{--reach-wash: var(--color-kutani-wash);--reach-accent: var(--color-kutani-aubergine);--reach-dot: var(--color-kutani-aubergine);--show-answer-bg: var(--color-kutani-aubergine);--choice-wrong-bg: var(--color-kutani-wash);--choice-wrong-ink: var(--color-ink);--choice-right-bg: var(--color-kutani-ochre);--choice-right-ink: var(--color-yellow-ink)}.study :focus-visible{outline:3px solid var(--color-fire);outline-offset:3px}.study .card :focus-visible{outline-color:var(--card-headword)}.study .card .details:focus-visible{outline:2px solid var(--card-headword);outline-offset:4px}.headline{margin:8px 0 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