:root{--bg:#141414;--surface-1:#1c1c1c;--surface-2:#242424;--surface-3:#2e2e2e;--gold:#dfb017;--gold-soft:#f0cf5e;--gold-tint:#dfb0171f;--text:#f4f4f4;--text-dim:#b5b5b5;--text-mute:#7d7d7d;--line:#333;--line-soft:#2a2a2a;--success:#4ade80;--danger:#f87171;--font-lat:Aptos, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-jp:"Yu Gothic", "Noto Sans JP", sans-serif;color:var(--text);background:var(--bg);font-family:var(--font-lat);font-size:15px}@font-face{font-family:Aptos;src:url(/fonts/aptos.ttf)format("truetype");font-weight:100 900;font-display:swap}*{box-sizing:border-box}body{background:var(--bg);min-width:320px;margin:0}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}:focus-visible{outline:2px solid var(--gold);outline-offset:2px}.app-shell{background:var(--bg);align-items:stretch;min-height:100vh;display:flex}.sidebar{background:var(--surface-1);border-right:1px solid var(--line-soft);flex-direction:column;flex:none;width:240px;height:100vh;padding:0;display:flex;position:sticky;top:0}.brand{color:var(--gold);align-items:center;gap:10px;padding:18px 16px 14px;display:flex}.brand-mark{object-fit:cover;border-radius:8px;flex:none;width:38px;height:38px;display:block}.brand-copy{gap:2px;min-width:0;display:grid}.brand strong{letter-spacing:.06em;font-size:13px;font-weight:700}.brand small{color:var(--text-mute);font-size:11px}.brand.compact{display:none}.brand-link{cursor:pointer;text-align:left;font:inherit;background:0 0;border:0}.nav-list{flex-direction:column;flex:1;gap:2px;padding:8px 12px 8px 0;display:flex;overflow:auto}.nav-item{min-height:44px;color:var(--text-dim);text-align:left;background:0 0;border:0;border-left:3px solid #0000;border-radius:0 8px 8px 0;align-items:center;gap:11px;padding:10px 16px;font-weight:500;text-decoration:none;transition:background .15s ease-out,color .15s ease-out,border-color .15s 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0;border-radius:8px;flex:none;place-items:center;display:grid}.icon-button:hover{background:var(--surface-2);color:var(--text)}.danger-hover:hover{color:var(--danger)}.main{flex:1;width:100%;min-width:0;max-width:1120px;margin:0 auto;padding:clamp(16px,3vw,32px) clamp(16px,3vw,32px) 96px}.mobile-header{border-bottom:1px solid var(--line-soft);justify-content:space-between;align-items:center;display:none}.user-pill{background:var(--surface-2);border:1px solid var(--line);color:var(--text-dim);border-radius:10px;max-width:58vw;padding:5px 10px}.user-pill strong,.user-pill span{text-overflow:ellipsis;white-space:nowrap;display:block;overflow:hidden}.user-pill strong{font-size:11px;font-weight:500}.user-pill span{color:var(--text-mute);margin-top:1px;font-size:10px}.page{padding:0}.page-head{justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:24px;display:flex}h1{margin:0;font-size:28px;line-height:34px}h2{font-size:20px;line-height:26px}.page-head 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12px}input::placeholder{color:var(--text-mute)}.form-error{color:var(--danger);margin:0}.primary-button,.secondary-button,.ghost-button{border-radius:8px;min-height:44px;padding:0 16px;font-weight:700}.primary-button{background:var(--gold);color:#141414;border:0}.primary-button:hover{background:var(--gold-soft)}.print-button{align-items:center;gap:8px;display:inline-flex}.button-icon{fill:none;stroke:currentColor;stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round;width:18px;height:18px}.secondary-button{border:1px solid var(--line);color:var(--text);background:0 0}.ghost-button{color:var(--text-dim);background:0 0;border:0}.danger-text,.secondary-button.danger{color:var(--danger)}.secondary-button.success{color:var(--success)}.stat-grid{grid-template-columns:repeat(6,minmax(120px,1fr));gap:12px;margin-bottom:20px;display:grid}.stat-card,.info-panel,.shortcut-card,.progress-panel{background:var(--surface-1);border:0;border-radius:14px}.stat-card{padding:16px}.stat-card 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#00000059}.kanji-tile.selected{border-color:var(--gold);background:var(--surface-2)}.tile-kanji{font-family:var(--font-jp);margin-bottom:6px;font-size:38px;line-height:1.1}.kanji-tile p{min-height:18px;color:var(--text-dim);white-space:nowrap;text-overflow:ellipsis;margin:4px 0 0;font-size:13px;line-height:18px;overflow:hidden}.kanji-tile .badge{display:none}.check{width:20px;height:20px;accent-color:var(--gold);position:absolute;top:10px;left:10px}.section-kanji{font-family:var(--font-jp);color:var(--gold)}.phonetic-group{margin-top:28px}.phonetic-group-head{justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:14px;display:flex}.phonetic-group-head h2{margin:0;font-size:20px;font-weight:700}.phonetic-group-head p{color:var(--text-dim);margin:6px 0 0}.phonetic-group-head p strong{color:var(--text);letter-spacing:.03em}.phonetic-group-head>span{background:var(--surface-3);color:var(--text-dim);border-radius:999px;flex:none;padding:6px 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button.active{background:var(--gold);color:#141414;font-weight:700}.segmented.wide{margin-bottom:18px}.reading-search{max-width:420px;height:48px;margin-bottom:16px}.reading-pills{flex-wrap:wrap;gap:8px;margin-bottom:28px;display:flex}.reading-pill{border:1px solid var(--line);background:var(--surface-3);min-height:36px;color:var(--text);border-radius:999px;align-items:center;gap:7px;padding:8px 14px;font-size:13px;font-weight:500;transition:border-color .15s ease-out,background .15s ease-out;display:inline-flex}.reading-pill:hover{border-color:var(--gold)}.reading-pill.active{border-color:var(--gold);background:var(--gold);color:#141414}.reading-pill span:nth-child(2){font-family:var(--font-jp);opacity:.75}.reading-pill span:nth-child(3){opacity:.6}.reading-selected h2{margin:0 0 4px;font-size:20px;font-weight:700}.reading-selected>p{color:var(--text-mute);margin:0 0 20px;font-size:13px}.reading-series-list{flex-direction:column;gap:24px;display:flex}.reading-series-head{align-items:baseline;gap:10px;margin-bottom:12px;display:flex}.reading-series-head span:first-child{font-family:var(--font-jp);color:var(--gold);font-size:28px;font-weight:600}.reading-series-head span:last-child{color:var(--text-mute);font-size:13px}.quiz-card{background:var(--surface-1);border:1px solid var(--line-soft);text-align:center;border-radius:20px;max-width:560px;margin:0;padding:40px 28px;transition:border-color .2s ease-out;box-shadow:0 1px #ffffff08,0 8px 24px #00000059}.quiz-card.revealed{border-color:var(--line)}.quiz-setup{background:var(--surface-1);border-radius:20px;max-width:560px;padding:28px}.quiz-setup label{margin-bottom:8px;display:block}.quiz-size-options{gap:8px;margin-bottom:20px;display:flex}.quiz-size-options button{border:1px solid var(--line);background:var(--surface-3);height:44px;color:var(--text);border-radius:8px;flex:1;font-weight:700}.quiz-size-options button.active{border-color:var(--gold);background:var(--gold);color:#141414}.quiz-setup select{height:48px}.quiz-start{width:100%;margin-top:24px}.quiz-active{max-width:560px}.quiz-status{color:var(--text-dim);justify-content:space-between;align-items:center;margin-bottom:12px;font-size:13px;display:flex}.score-right{color:var(--success)}.score-wrong{color:var(--danger)}.quiz-progress{background:var(--surface-3);border-radius:999px;height:6px;margin-bottom:20px;overflow:hidden}.quiz-progress span{background:var(--gold);border-radius:inherit;height:100%;transition:width .4s ease-out;display:block}.answer-box{gap:12px;animation:.2s ease-out reveal;display:grid}.answer-box p{margin:0;font-size:18px}.quiz-series{color:var(--text-mute);font-size:13px}.answer-actions{justify-content:center;gap:10px;display:flex}.quiz-reveal{margin-top:24px;padding:0 28px}.quiz-mark{background:0 0;border-radius:8px;min-height:48px;padding:0 24px;font-weight:700}.quiz-mark.correct{border:1px solid var(--success);color:var(--success)}.quiz-mark.correct:hover{background:#4ade801a}.quiz-mark.wrong{border:1px solid var(--danger);color:var(--danger)}.quiz-mark.wrong:hover{background:#f871711a}.quiz-back{color:var(--text-mute);background:0 0;border:0;margin-top:16px;font-size:13px}.quiz-back:hover{color:var(--text)}.quiz-finished{background:var(--surface-1);text-align:center;border-radius:20px;max-width:560px;padding:36px 28px;animation:.25s ease-out reveal}.quiz-finished>div{color:var(--text-dim);letter-spacing:.06em;text-transform:uppercase;font-size:13px}.quiz-finished>strong{color:var(--gold);margin-top:8px;font-size:56px;line-height:1;display:block}.quiz-finished p{color:var(--text-dim);margin:10px 0 24px}.progress-panel{margin-bottom:14px;padding:18px}.progress-head{justify-content:space-between;margin-bottom:12px;display:flex}.progress-head span{color:var(--text-dim)}.progress-bar{background:var(--surface-3);border-radius:999px;height:10px;overflow:hidden}.progress-bar span{border-radius:inherit;background:var(--success);height:100%;transition:width .4s;display:block}.progress-summary-grid{grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;margin-bottom:16px;display:grid}.progress-stat{background:var(--surface-1);border-radius:14px;padding:16px 18px}.progress-stat strong{color:var(--text);font-size:28px;line-height:1.1;display:block}.progress-stat.success strong{color:var(--success)}.progress-stat.gold strong{color:var(--gold)}.progress-stat span{color:var(--text-dim);margin-top:4px;font-size:13px;display:block}.progress-main-bar{margin-bottom:24px}.progress-tools{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:20px;display:flex}.progress-filter{background:var(--surface-1);border-radius:8px;gap:4px;padding:4px;display:flex}.progress-filter button{height:36px;color:var(--text-dim);background:0 0;border:0;border-radius:6px;padding:0 16px;font-size:13px;font-weight:700}.progress-filter button.active{background:var(--gold);color:#141414}.progress-tools input{flex:1;min-width:160px;max-width:280px;height:44px}.progress-tools .secondary-button,.progress-tools .ghost-button{font-size:13px}.progress-tool-spacer{flex:1}.progress-list{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:10px;display:grid}.progress-row{background:var(--surface-1);min-height:62px;color:var(--text);text-align:left;border:0;border-radius:12px;align-items:center;gap:12px;padding:12px 14px;transition:background .15s ease-out;display:flex}.progress-row:hover{background:var(--surface-2)}.progress-check{border:1.5px solid var(--line);color:#141414;border-radius:6px;flex:none;place-items:center;width:22px;height:22px;font-size:14px;font-weight:800;transition:background .15s ease-out,border-color .15s ease-out;display:grid}.progress-check.checked{border-color:var(--gold);background:var(--gold)}.progress-kanji{color:var(--text);font-family:var(--font-jp);flex:none;font-size:26px;font-weight:500}.progress-copy{min-width:0}.progress-copy span{display:block}.progress-copy span:first-child{color:var(--text-dim);letter-spacing:.03em;font-size:13px}.progress-copy span:last-child{color:var(--text-mute);text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.load-more-wrap{text-align:center;margin-top:20px}.level-toggle{background:var(--surface-1);border-radius:8px;gap:4px;width:fit-content;margin-bottom:8px;padding:4px;display:flex}.level-toggle button{height:40px;color:var(--text-dim);background:0 0;border:0;border-radius:6px;padding:0 20px;font-size:15px;font-weight:700}.level-toggle button.active{background:var(--gold);color:#141414}.level-count{color:var(--text-mute);margin:0 0 20px;font-size:13px}.cheat-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;display:grid}.cheat-card{background:var(--surface-1);border:0;border-radius:14px;padding:18px 20px}.cheat-induk{float:left;font-family:var(--font-jp);color:var(--gold);margin-right:14px;font-size:40px;font-weight:600;line-height:1}.cheat-body{min-height:42px;margin-bottom:12px}.cheat-body strong{font-size:15px;display:block}.cheat-body strong span{font-family:var(--font-jp)}.cheat-body small{color:var(--text-dim);letter-spacing:.03em;font-size:13px}.cheat-body p{color:var(--text-mute);margin:2px 0 0;font-size:13px}.kanji-chips{clear:both;flex-wrap:wrap;gap:6px;display:flex}.kanji-chips button{font-family:var(--font-jp);background:var(--surface-3);color:var(--text);border:0;border-radius:6px;padding:4px 7px;font-size:18px}.kanji-chips button:hover{background:var(--surface-2);color:var(--gold)}.kanji-chips button 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