*{box-sizing:border-box}body{margin:0;background:var(--color-background);color:var(--color-text);font-family:var(--font-family-sans);line-height:1.65}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button,select,input:not([type=checkbox]){min-height:48px;border:1px solid var(--color-border);border-radius:8px;padding:10px 16px;background:var(--color-surface);color:var(--color-text)}button{cursor:pointer;font-weight:600}button:hover{background:var(--color-primary-soft)}button:disabled{opacity:.55;cursor:default}button.primary{background:var(--color-primary);color:white;border-color:var(--color-primary)}a{color:var(--color-primary)}:focus-visible{outline:3px solid var(--color-focus);outline-offset:3px}[hidden]{display:none!important}.kanji-header{max-width:1120px;margin:auto;padding:20px 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid var(--color-border-light)}.kanji-brand{text-decoration:none;font-weight:800;font-size:24px}.kanji-brand span{display:block;font-size:12px;font-weight:500;color:var(--color-text-secondary)}nav{display:flex;align-items:center;gap:12px}nav button{border:0}main{max-width:920px;padding:30px 28px 56px;margin:auto;min-height:70vh}h1{font-size:36px;line-height:1.4;margin:10px 0 22px;letter-spacing:.025em}h2{font-size:20px;margin:28px 0 14px}.eyebrow,.muted{color:var(--color-text-secondary);font-size:14px}.eyebrow{letter-spacing:.08em}#message:empty{display:none}#message{background:var(--color-primary-soft);padding:12px 16px;border-radius:8px}.grade-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}.grade-grid button{padding:18px 6px;font-size:19px}.grade-grid button[aria-pressed=true]{border:2px solid var(--color-primary);background:var(--color-primary-soft);color:var(--color-primary)}.summary-strip{margin:20px 0;padding:16px 0;border-bottom:1px solid var(--color-border-light)}.setup-row{display:flex;gap:24px;flex-wrap:wrap;margin-bottom:24px}label{display:flex;align-items:center;gap:10px}#start{min-width:240px}.learning-heading{display:flex;align-items:center;justify-content:space-between}progress{width:100%;height:8px;accent-color:var(--color-primary);margin:12px 0}.instruction{font-size:22px;margin:14px 0}.question-sentence{font-size:30px;line-height:1.8;margin:12px 0 20px;overflow-wrap:anywhere}.question-sentence u{text-decoration-thickness:2px;text-underline-offset:8px;color:var(--color-primary);font-weight:700}canvas{display:block;width:100%;height:auto;aspect-ratio:3;background:var(--color-surface);border:2px solid var(--color-primary);border-radius:12px;touch-action:none}.writing-tools{display:flex;justify-content:flex-end;gap:10px;margin-top:10px}.answer-tools{display:flex;gap:12px;flex-wrap:wrap}.answer-tools button{min-width:130px}#feedback{min-height:30px;margin:12px 0;font-weight:600}.choices{display:grid;grid-template-columns:1fr 1fr;gap:12px}.choices button{font-size:24px;min-height:68px}.result-counts{display:flex;gap:24px;flex-wrap:wrap;margin:24px 0;font-size:24px}.result-row,.set-row{padding:16px 0;border-bottom:1px solid var(--color-border-light);display:flex;align-items:center;gap:12px;flex-wrap:wrap}.set-row strong{flex:1;min-width:130px}#result-list{margin-bottom:24px}#stroke-demo{display:flex;flex-wrap:wrap;gap:4px;margin:10px 0}#stroke-demo svg{width:96px;height:96px;border:1px solid var(--color-border);background:var(--color-surface-subtle)}#practice-ink{margin:16px 0}.editor-fields{display:flex;gap:18px;flex-wrap:wrap;margin:20px 0}.editor-fields label{display:grid;flex:1}.photo-label{display:block;margin:20px 0}.photo-label input{display:block;max-width:100%;margin-top:8px}#photo-preview{max-width:100%;max-height:360px;object-fit:contain}fieldset{border:1px solid var(--color-border);border-radius:10px;margin:24px 0;padding:20px}fieldset label{display:grid;grid-template-columns:120px minmax(0,1fr);margin:10px 0}fieldset input,fieldset select{width:100%;min-width:0}fieldset legend{font-weight:700}#parent-progress{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:24px}#parent-progress p{padding:16px;background:var(--color-surface-subtle);margin:0;border-radius:8px}details{margin:20px 0}summary{min-height:48px;cursor:pointer}#character-progress{max-width:100%;overflow-wrap:anywhere}#character-progress p{border-bottom:1px solid var(--color-border-light);padding:8px 0;font-size:14px}footer{display:flex;justify-content:center;flex-wrap:wrap;gap:20px;padding:24px;font-size:13px;border-top:1px solid var(--color-border-light)}#editor>button,#result>button{margin:6px 4px 6px 0}#expert-unlock{width:24px;height:24px}.error{color:var(--color-error)}@media(max-width:640px){.kanji-header{padding:14px 16px;align-items:flex-start}.kanji-brand{font-size:20px}nav{gap:4px;flex-wrap:wrap;justify-content:flex-end;max-width:170px}nav button,nav a{font-size:12px;padding:8px;min-height:44px}main{padding:22px 16px 36px}h1{font-size:28px}.grade-grid{grid-template-columns:repeat(3,1fr)}.grade-grid button{padding:12px}.setup-row{gap:12px}.setup-row label{width:100%;justify-content:space-between}#start{width:100%;margin-bottom:10px}.question-sentence{font-size:24px}.instruction{font-size:18px}canvas{aspect-ratio:2;height:190px}.answer-tools{gap:8px}.answer-tools button{min-width:0;flex:1;padding:10px}.choices button{font-size:20px}#parent-progress{grid-template-columns:repeat(2,1fr)}fieldset{padding:12px}fieldset label{grid-template-columns:1fr;gap:4px}.editor-fields{display:block}.editor-fields label{margin-bottom:12px}.result-counts{gap:14px;font-size:21px}}@media(max-height:750px) and (min-width:641px){main{padding-top:16px}.question-sentence{margin:6px 0 12px}#ink{max-height:220px}.instruction{margin:8px 0}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
.result-detail{flex:1;min-width:0;overflow-wrap:anywhere}.result-detail p{margin:4px 0}.result-detail u{text-underline-offset:4px}#catalog-coverage,#session-history{overflow-wrap:anywhere}#parent .setup-row{margin-top:16px}#parent .setup-row select{max-width:100%}
#ink-hint{margin:0 0 6px}#ink{background-image:linear-gradient(to right,transparent calc(100% - 1px),var(--color-border-light) 0);background-size:calc(100% / var(--slots,2)) 100%}.is-learning main{max-width:960px;padding-top:16px}.is-learning .kanji-header{padding-top:10px;padding-bottom:10px}.is-learning footer{display:none}.is-learning .question-sentence{font-size:clamp(24px,3.4vw,34px);margin:8px 0 16px}.is-learning .instruction{color:var(--color-text-secondary);font-size:18px}.is-learning .writing-tools button{min-height:44px;padding:6px 12px}.is-learning #feedback{margin:8px 0;min-height:28px}.is-learning .answer-tools .primary{min-width:170px}.is-learning #counter{font-weight:700;font-variant-numeric:tabular-nums}@media(max-width:640px){.is-learning .kanji-header{padding:8px 12px}.is-learning main{padding:12px}.is-learning .question-sentence{line-height:1.7;margin:6px 0 12px}.is-learning #ink{height:180px}.is-learning nav{max-width:150px}.is-learning .instruction{font-size:16px;margin:8px 0}.is-learning .answer-tools .primary{min-width:0;flex:2}.is-learning #quit{padding:6px 10px;min-height:44px}.is-learning progress{margin:8px 0}.is-learning .writing-tools{margin-top:6px}}

.square-input{display:flex;flex-wrap:wrap;gap:12px}.square-input>div{width:min(100%,240px)}.square-input canvas{width:100%;height:auto;aspect-ratio:1;touch-action:none}.square-input button{margin-top:6px}.square-input[hidden]{display:none}

.square-input{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px}.square-input>div{width:auto;min-width:0}.square-input label{display:block}.square-input canvas{margin-top:6px}.square-input button{width:100%}

.square-input{max-width:600px}.square-input>div{max-width:280px}
#ink-trial>label{flex-wrap:wrap;margin:12px 0}#ink-writer{max-width:100%;min-width:0}#ink-trial-packs{gap:10px}#ink-trial-packs button{max-width:100%;white-space:normal;overflow-wrap:anywhere}#ink-trial summary{cursor:pointer;min-height:44px;padding:10px 0}

.square-input,.square-input canvas,.square-input button{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
#learning,#practice{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}

.square-input *{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}.square-input>div{touch-action:none}
.answer-images{display:flex;flex-wrap:wrap;gap:8px}.answer-images img{width:100px;height:100px;border:1px solid var(--color-border)}#self-answer{font-size:36px;letter-spacing:.15em}#self-check{padding:16px;border:2px solid var(--color-primary);border-radius:12px;margin:16px 0}#self-check button{margin:8px 8px 8px 0}#self-check label{flex-wrap:wrap}#self-check select{max-width:100%}.result-detail select{margin:8px}.result-detail button{margin:4px}
.parent-comparison{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}.parent-comparison>div{min-width:0}#parent-preview img{width:min(140px,100%);height:auto}#self-check h2{margin-top:0}@media(max-width:520px){.parent-comparison{grid-template-columns:1fr;gap:8px}}

.batch-grading .result-row{display:block;padding:20px 0}.batch-grading .result-row>strong{display:block;margin-bottom:12px}.batch-grading .printed-answer{font-size:28px;line-height:1.6;margin:12px 0}.batch-grading .answer-images{margin:12px 0}.batch-grading .answer-images img{width:120px;height:120px}.batch-grading [data-advisory]{color:var(--color-text-secondary);font-size:14px;margin:12px 0}#grading-end{margin-top:20px}

.word-meaning{line-height:1.8;overflow-wrap:anywhere;border-left:3px solid var(--color-primary);padding-left:12px;margin:12px 0}


#meaning-help{margin:0 0 16px}#meaning-toggle{min-height:44px;touch-action:manipulation;display:inline-flex;align-items:center;gap:6px}#meaning-toggle[aria-expanded=true]{border-color:var(--color-primary)}#meaning-text{max-width:65ch}

/* Keep handwriting, its controls, and the next action in one visual group. */
#writing{max-width:860px;margin-inline:auto}
.square-input{max-width:860px;grid-template-columns:repeat(auto-fit,minmax(min(100%,170px),1fr))}
.square-input>div{max-width:none}
.writing-tools{justify-content:flex-start}
.answer-tools{margin-top:10px}
#pending-home,#pending-parent{margin:18px 0;padding:16px;border:1px solid var(--color-primary);border-radius:12px;background:var(--color-primary-soft)}
#pending-home p,#pending-parent p{margin:0 0 12px}
#ink-trial{margin-top:24px}
#ink-settings{margin:20px 0}
#grading-navigation{display:flex;align-items:center;gap:8px;flex-wrap:wrap;position:sticky;top:0;z-index:3;background:var(--color-background);padding:8px 0;border-bottom:1px solid var(--color-border-light)}
#grading-position{margin-right:auto;font-weight:700}
.batch-grading .result-row{max-width:760px;margin-inline:auto}
.batch-grading .result-detail{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);column-gap:14px}
.batch-grading .result-detail>*{order:10}
.batch-grading .result-detail>p:first-child{grid-column:1/-1;order:0}
.batch-grading .printed-answer{grid-column:1;order:1;margin:12px 0}
.batch-grading .answer-images{grid-column:2;order:2;margin:12px 0}
.batch-grading .answer-images img{width:min(100%,150px);height:auto;aspect-ratio:1;object-fit:contain}
.batch-grading .result-detail>.word-meaning{grid-column:1/-1;order:3}
.batch-grading .result-detail>.result-meaning{grid-column:1/-1;order:3;margin:4px 0}
.batch-grading .result-meaning summary{min-height:44px;display:flex;align-items:center;color:var(--color-primary)}
.batch-grading .result-detail>[data-advisory]{grid-column:1/-1;order:4}
#meaning-help{position:relative}
#meaning-text:not([hidden]){position:absolute;top:100%;left:0;z-index:4;width:min(440px,calc(100vw - 32px));max-height:35vh;overflow:auto;margin:4px 0;background:var(--color-surface);border:1px solid var(--color-primary);border-radius:10px;padding:12px;box-shadow:0 4px 12px #20324d22}
@media(max-width:640px){.square-input{grid-template-columns:repeat(auto-fit,minmax(min(100%,140px),1fr))}.square-input canvas{aspect-ratio:1;height:auto}.batch-grading .result-detail{column-gap:8px}.batch-grading .printed-answer{font-size:clamp(22px,6vw,28px)}#grading-navigation button{min-height:44px;padding:8px}}
@media(max-width:640px){.kanji-header{flex-wrap:wrap}.kanji-brand span{display:none}.kanji-header nav{max-width:none;width:100%;justify-content:space-between}.kanji-header nav button,.kanji-header nav a{font-size:13px}}
.underline-editor,.alternative-editor{margin:12px 0 18px;padding:12px;background:var(--color-surface-subtle);border-radius:10px}
.underline-editor .question-sentence{font-size:20px;margin:0 0 10px}
.alternative-entry{display:flex;align-items:center;gap:8px;margin:8px 0}
.alternative-entry label{flex:1;min-width:0;grid-template-columns:120px minmax(0,1fr)}
.alternative-entry button{min-width:48px}
@media(max-width:640px){.alternative-entry{align-items:flex-end}.alternative-entry label{grid-template-columns:1fr}}
.editor-workspace{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,3fr);gap:24px;align-items:start}
#photo-section{position:sticky;top:12px;min-width:0;max-height:calc(100vh - 24px);overflow:auto}
#photo-section[hidden]+#question-editor{grid-column:1/-1}
#photo-preview{width:100%;max-height:min(70vh,720px);object-fit:contain;background:var(--color-surface-subtle)}
#question-editor{min-width:0}
.editor-review-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:8px 0;border-bottom:1px solid var(--color-border-light)}
@media(max-width:760px){.editor-workspace{display:block}#photo-section{position:static;max-height:none;overflow:visible}#photo-preview{max-height:420px}}

/* Start, handwriting, and review each keep one clear primary action. */
.kanji-home-heading{display:flex;align-items:center;justify-content:space-between;gap:8px;max-width:520px}
.kanji-home-heading h1{font-size:clamp(25px,3vw,34px);margin:4px 0 8px}
.kanji-home-heading .eyebrow{margin:0}
.kanji-home-heading img{width:clamp(76px,20vw,120px);height:auto;aspect-ratio:3/2;object-fit:contain;flex:none}
#account-note{margin:0 0 12px;color:var(--color-text-secondary)}
#home>#start{margin:0 0 8px;min-height:56px;font-size:19px}
.pending-session-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 0;border-top:1px solid var(--color-border-light)}
.pending-session-row:first-child{border-top:0}
.pending-session-row span{min-width:0;overflow-wrap:anywhere}
#square-pages{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:10px 0}
#square-page-status{margin-right:auto;font-weight:700}
.kanji-stamp-card{max-width:400px;padding:12px 16px;margin:16px 0;background:var(--color-surface-subtle);border:1px solid var(--color-border);border-radius:10px}
.kanji-stamp-card>span{font-size:13px;margin-left:8px}
.kanji-stamp-slots{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px;margin:10px 0 4px}
.kanji-stamp-slots span{display:grid;place-items:center;min-height:44px;border:1px dashed var(--color-border);border-radius:8px}
.kanji-stamp-slots .is-filled{background:#fff5d9;border:1px solid #e7b938;color:#8b641a;font-size:22px}
#result-effort{font-weight:600;margin:0 0 8px}
#meaning-panel:not([hidden]){position:fixed;inset:auto 12px 12px;z-index:20;width:min(440px,calc(100vw - 24px));max-height:45vh;overflow:auto;margin:auto;padding:12px 16px;background:var(--color-surface);border:2px solid var(--color-primary);border-radius:12px;box-shadow:0 8px 30px #20324d33}
#meaning-panel #meaning-text{position:static;width:auto;max-height:none;overflow:visible;margin:8px 0 0;padding:0;border:0;box-shadow:none}
#meaning-close{float:right;min-height:44px}
@media(max-width:640px){.pending-session-row{align-items:stretch;flex-direction:column}.pending-session-row button{width:100%}#home>#start{width:100%}}
@media(max-width:350px){.kanji-home-heading img{width:60px}.kanji-home-heading h1{font-size:23px}}
#grade-answer .answer-images img{width:clamp(64px,18vw,120px)}
#grade-answer .answer-images.is-long{grid-column:1/-1}


.parent-lock-dialog{width:min(420px,calc(100vw - 24px));max-height:90dvh;overflow:auto;border:2px solid var(--color-primary);border-radius:16px;padding:20px}.parent-lock-dialog::backdrop{background:#20324d66}.parent-lock-dialog form,#parent-lock-settings form{display:grid;gap:12px}.parent-lock-dialog label,#parent-lock-settings label{display:flex;flex-direction:column;gap:6px}.parent-lock-dialog input,#parent-lock-settings input{width:100%;min-width:0;font-size:20px;letter-spacing:.18em}.parent-lock-dialog button{min-height:48px;margin:6px 0;width:100%}.parent-lock-dialog h2{font-size:24px;margin:0 0 16px}#parent-lock-settings button{margin:8px 8px 8px 0}#parent-lock-settings [role=status]{font-size:16px}
.parent-lock-dialog>a{display:flex;align-items:center;justify-content:center;min-height:44px;touch-action:manipulation}
/* Outside the lesson header: one persistent device-level sound control. */
.sound-toggle{position:fixed;z-index:40;top:max(8px,env(safe-area-inset-top));right:max(8px,env(safe-area-inset-right));width:44px;height:44px;min-height:44px;padding:8px;display:grid;place-items:center;background:var(--color-surface);touch-action:manipulation}
.kanji-header{padding-right:64px}
.learning-heading,.practice-heading{padding-right:56px}
.sound-toggle svg{pointer-events:none}
#guest-format>label{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:20px}