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minmax(0,1fr);padding:16px}.unit-actions{grid-column:2;justify-items:start}.unit-status{justify-content:flex-start}.section-heading{flex-direction:column;align-items:flex-start}.section-heading-actions{justify-content:space-between;width:100%}.memory-grid{grid-template-columns:repeat(2,1fr)}.level-mastery-grid,.current-progress-card{grid-template-columns:1fr}.progress-ring-copy{text-align:left}.practice-grid{grid-template-columns:1fr}.leitner-game-card{gap:28px;padding:24px 20px 34px}.leitner-game-copy .button-primary{width:100%}.leitner-gates{grid-template-columns:repeat(5,minmax(42px,1fr));padding-bottom:2px;overflow-x:auto}.settings-row{grid-template-columns:1fr;gap:10px;padding:17px 0}.select-control{width:100%}.result-stats{grid-template-columns:repeat(2,1fr)}.result-stat:nth-child(2){border-right:0}.result-stat:nth-child(-n+2){border-bottom:1px solid var(--line)}.result-actions{flex-direction:column}.result-actions a,.result-actions 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auto;display:grid}.session-count{color:var(--ink-faint);font-family:var(--font-geist-mono);letter-spacing:.05em;flex-direction:column;gap:3px;font-size:11px;display:flex}.session-count span{color:var(--accent-dark);letter-spacing:.1em;text-transform:uppercase;font-size:9px;font-weight:700}.session-count strong{color:var(--ink);font-variant-numeric:tabular-nums;align-items:center;gap:6px;font-size:13px;display:inline-flex}.session-count.expired strong{color:var(--accent-dark)}.session-meta{align-items:center;gap:10px;display:flex}.session-language-key{border:1px solid var(--line);background:var(--surface);border-radius:7px;flex:none;gap:3px;padding:3px;display:inline-flex;position:relative}@supports (color:color-mix(in lab, red, red)){.session-language-key{background:color-mix(in srgb, var(--surface) 76%, transparent)}}.session-language-key{cursor:help;outline:none}.session-language-key>span:not(.language-key-tooltip){width:16px;height:16px;font-family:var(--font-geist-sans);border-radius:4px;place-items:center;font-size:9px;font-weight:780;line-height:1;display:grid}.language-key-ja{color:var(--sage);background:var(--sage-soft)}.language-key-zh{color:var(--ink-soft);background:var(--surface-soft)}.language-key-tooltip{z-index:20;border:1px solid var(--line);width:max-content;max-width:210px;color:var(--ink-soft);background:var(--surface);box-shadow:var(--shadow);letter-spacing:0;opacity:0;pointer-events:none;visibility:hidden;border-radius:8px;padding:7px 9px;font-size:10px;font-weight:620;line-height:1.4;transition:all .13s;position:absolute;top:calc(100% + 7px);left:0;transform:translateY(-3px)}.session-language-key:hover .language-key-tooltip,.session-language-key:focus-visible .language-key-tooltip{opacity:1;visibility:visible;transform:translateY(0)}.session-language-key:focus-visible{outline:2px solid var(--accent)}@supports (color:color-mix(in lab, red, red)){.session-language-key:focus-visible{outline:2px solid color-mix(in srgb, var(--accent) 35%, transparent)}}.session-language-key:focus-visible{outline-offset:2px}.session-progress{height:4px}.session-progress .progress-fill{transition:width .25s linear}.session-actions{justify-self:end;align-items:center;gap:2px;display:flex}.pause-button,.exit-button{color:var(--ink-soft);cursor:pointer;background:0 0;border:0;border-radius:8px;align-items:center;gap:7px;padding:8px 10px;font-size:12px;display:inline-flex}.pause-button:hover{color:var(--ink);background:var(--surface-soft)}.exit-button{color:var(--ink-faint)}.exit-button:hover{color:var(--accent-dark);background:var(--accent)}@supports (color:color-mix(in lab, red, red)){.exit-button:hover{background:color-mix(in srgb, var(--accent) 8%, transparent)}}.practice-stage{place-items:center;width:min(850px,100% - 36px);min-height:calc(100vh - 150px);margin:0 auto;padding:55px 0 80px;display:grid}.practice-core{text-align:center;width:100%;max-width:710px}.card-type-label{color:var(--ink-faint);letter-spacing:.14em;text-transform:uppercase;align-items:center;gap:7px;margin-bottom:28px;font-size:10px;font-weight:750;display:inline-flex}.card-type-label:before,.card-type-label:after{background:var(--line-strong);content:"";width:18px;height:1px}.leitner-track-wrap{width:min(460px,100%);margin:0 auto 18px}.leitner-track{grid-template-columns:1.45fr repeat(5,1fr);gap:5px;display:grid}.leitner-track>span{border:1px solid var(--line);min-width:0;height:31px;color:var(--ink-faint);background:var(--surface-soft);border-radius:8px;justify-content:center;align-items:center;gap:2px;display:flex}@supports (color:color-mix(in lab, red, red)){.leitner-track>span{background:color-mix(in srgb, var(--surface-soft) 78%, transparent)}}.leitner-track>span{font-family:var(--font-geist-mono);font-size:10px;transition:all .18s}.leitner-track>span small{text-transform:uppercase;font-size:7px}.leitner-track>span.is-current{border-color:var(--line-strong);color:var(--ink);background:var(--surface)}.leitner-track>span.is-target{border-color:var(--sage)}@supports (color:color-mix(in lab, red, red)){.leitner-track>span.is-target{border-color:color-mix(in srgb, var(--sage) 64%, var(--line))}}.leitner-track>span.is-target{color:var(--sage);background:var(--sage-soft);box-shadow:inset 0 -2px 0 var(--sage)}@supports (color:color-mix(in lab, red, red)){.leitner-track>span.is-target{box-shadow:inset 0 -2px 0 color-mix(in srgb, var(--sage) 35%, transparent)}}.leitner-track>.leitner-track-unboxed{font-family:var(--font-geist-sans);font-size:8px;font-weight:700}.leitner-track-wrap p{color:var(--ink-faint);margin:7px 0 0;font-size:9px}.prompt-primary{letter-spacing:-.06em;min-height:90px;margin:0;font-family:Yu Mincho,Noto Serif JP,Songti TC,serif;font-size:clamp(54px,9vw,90px);font-weight:520;line-height:1.16}.prompt-primary.language-ja,.prompt-secondary.language-ja,.feedback-answer .language-ja{color:var(--sage)}.prompt-primary.language-zh,.prompt-secondary.language-zh,.feedback-answer .language-zh{color:var(--ink-soft)}.prompt-primary.compact{font-size:clamp(42px,7vw,68px)}.prompt-primary.dense{letter-spacing:-.045em;font-size:clamp(31px,5vw,48px);line-height:1.25}.prompt-primary.extra-compact{letter-spacing:-.035em;font-size:clamp(25px,4vw,38px);line-height:1.3}.prompt-secondary{color:var(--ink-faint);margin:9px 0 0;font-size:14px}.retype-romaji-guide{color:var(--ink-faint);justify-content:center;align-items:baseline;gap:7px;margin:8px 0 0;display:flex}.retype-romaji-guide span{letter-spacing:.11em;text-transform:uppercase;font-size:9px;font-weight:750}.retype-romaji-guide code{color:var(--ink-soft);font-family:var(--font-geist-mono);letter-spacing:.04em;font-size:12px}.word-kind-badge{border:1px solid var(--line);color:var(--ink-soft);background:var(--surface-soft);border-radius:7px;margin-top:11px;padding:5px 8px;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.word-kind-badge{background:color-mix(in srgb, var(--surface-soft) 80%, transparent)}}.word-kind-badge{letter-spacing:.06em;font-size:10px;font-weight:700}.word-kind-badge+.prompt-instruction{margin-top:17px}.prompt-instruction{color:var(--ink-soft);margin:28px 0 12px;font-size:13px}.typing-input-wrap{max-width:560px;margin:0 auto;position:relative}.typing-input{z-index:1;border:1px solid var(--line-strong);resize:none;color:#0000;width:100%;min-height:76px;caret-color:var(--ink);text-align:center;background:var(--surface);font-family:var(--font-geist-mono);letter-spacing:.08em;border-radius:17px;outline:none;padding:17px 56px 17px 24px;font-size:clamp(24px,5vw,34px);font-weight:520;line-height:1.22;transition:border-color .15s,box-shadow .15s;display:block;position:relative;overflow:hidden;box-shadow:0 12px 35px #2c312b12}.typing-input:focus{border-color:var(--sage);box-shadow:0 0 0 4px var(--sage), 0 16px 38px #2c312b14}@supports (color:color-mix(in lab, red, red)){.typing-input:focus{box-shadow:0 0 0 4px color-mix(in srgb, var(--sage) 12%, transparent), 0 16px 38px #2c312b14}}.typing-input:focus-visible{outline:none}.typing-input.invalid{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent)}@supports (color:color-mix(in lab, red, red)){.typing-input.invalid{box-shadow:0 0 0 4px color-mix(in srgb, var(--accent) 10%, transparent)}}.typing-input.composing{color:var(--ink)}.typing-input:lang(ja),.typing-value-layer:lang(ja){letter-spacing:.02em;font-family:Noto Sans JP,Hiragino Sans,Yu 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0;font-size:11px}.practice-tools{justify-content:center;gap:6px;margin-top:17px;display:flex}.tool-button{color:var(--ink-faint);cursor:pointer;background:0 0;border:0;border-radius:9px;align-items:center;gap:7px;padding:8px 11px;font-size:11px;display:inline-flex}.tool-button:hover{color:var(--ink);background:var(--surface-soft)}.key-hint{border:1px solid var(--line);background:var(--surface);font-family:var(--font-geist-mono);border-radius:5px;padding:2px 5px;font-size:9px}.hint-box{max-width:500px;color:var(--sage);background:var(--sage-soft);border-radius:10px;margin:13px auto 0;padding:11px 14px;font-size:12px}.feedback-card{border:1px solid var(--line);background:var(--surface);max-width:620px;box-shadow:var(--shadow);text-align:left;border-radius:24px;margin:0 auto;padding:34px}.feedback-label{color:var(--sage);letter-spacing:.08em;align-items:center;gap:8px;margin-bottom:24px;font-size:12px;font-weight:760;display:flex}.feedback-label.error{color:var(--accent-dark)}.feedback-answer{border-bottom:1px solid var(--line);grid-template-columns:1fr 1fr;gap:24px;padding-bottom:26px;display:grid}.feedback-answer>div>span{color:var(--ink-faint);letter-spacing:.08em;text-transform:uppercase;margin-bottom:7px;font-size:10px;display:block}.feedback-answer>div>strong{font-family:Yu Mincho,Noto Serif 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Sans,sans-serif;font-size:17px;font-weight:650;line-height:1.55}.feedback-example-reading{color:var(--ink-faint);margin:0;font-family:Noto Sans JP,Hiragino Sans,sans-serif;font-size:11px;line-height:1.5}.feedback-example-translation{color:var(--ink-soft);margin:2px 0 0;font-size:12px;line-height:1.6}.feedback-action{justify-content:flex-end;margin-top:24px;display:flex}.retype-label{color:var(--accent-dark);margin:20px 0 10px;font-size:12px;font-weight:700}.paused-overlay{z-index:60;background:var(--paper);place-items:center;padding:24px;display:grid;position:fixed;inset:0}@supports (color:color-mix(in lab, red, red)){.paused-overlay{background:color-mix(in srgb, var(--paper) 84%, transparent)}}.paused-overlay{-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.paused-card{text-align:center;width:min(440px,100%);padding:40px}.paused-card h2{letter-spacing:-.04em;margin:20px 0 8px;font-family:Yu Mincho,serif;font-size:33px}.paused-card p{color:var(--ink-faint);margin:0 0 24px;font-size:13px}.paused-actions{flex-wrap:wrap;justify-content:center;gap:9px;display:flex}.time-up-overlay{z-index:80;background:var(--paper);place-items:center;padding:24px;display:grid;position:fixed;inset:0}@supports (color:color-mix(in lab, red, red)){.time-up-overlay{background:color-mix(in srgb, var(--paper) 90%, transparent)}}.time-up-overlay{-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}.time-up-card{text-align:center;width:min(430px,100%);padding:40px}.time-up-icon{width:52px;height:52px;color:var(--paper);background:var(--accent);box-shadow:0 12px 32px var(--accent);border-radius:50%;place-items:center;margin:0 auto 18px;display:grid}@supports (color:color-mix(in lab, red, red)){.time-up-icon{box-shadow:0 12px 32px color-mix(in srgb, var(--accent) 28%, transparent)}}.time-up-card .eyebrow{color:var(--accent-dark);margin:0}.time-up-card h2{letter-spacing:-.04em;margin:8px 0;font-family:Yu 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transparent)}}.exit-overlay{-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.exit-card{text-align:center;width:min(430px,100%);padding:38px}.exit-icon{width:48px;height:48px;color:var(--accent-dark);background:var(--accent);border-radius:15px;place-items:center;margin:0 auto;display:grid}@supports (color:color-mix(in lab, red, red)){.exit-icon{background:color-mix(in srgb, var(--accent) 11%, transparent)}}.exit-card h2{letter-spacing:-.04em;margin:20px 0 8px;font-family:Yu Mincho,serif;font-size:31px}.exit-card>p{color:var(--ink-faint);margin:0;font-size:13px;line-height:1.7}.exit-card .status-message{margin-top:16px}.exit-actions{justify-content:center;gap:9px;margin-top:26px;display:flex}@media (max-width:620px){.session-header{grid-template-columns:74px minmax(0,1fr) 74px;gap:12px;width:calc(100% - 28px)}.session-meta{flex-direction:column;align-items:flex-start;gap:3px}.session-language-key{padding:2px}.session-language-key>span:not(.language-key-tooltip){width:14px;height:14px;font-size:8px}.pause-button span,.exit-button span{display:none}.pause-button,.exit-button{padding:8px}.practice-stage{align-items:start;padding-top:50px}.prompt-primary{min-height:75px}.typing-input{height:68px;padding-left:14px;font-size:24px}.feedback-card{padding:24px 20px}.feedback-answer{grid-template-columns:1fr;gap:17px}.exit-actions{flex-direction:column-reverse}.exit-actions button{width:100%}.time-up-card{padding:32px 24px}.time-up-card>.button-primary{width:100%}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}