:root{--bg: #14141f;--surface: #1e1e2e;--surface-2: #28283c;--text: #e8e8f0;--text-dim: #9898b0;--accent: #4f8cff;--accent-dim: #2a4a80;--warn: #ffb84f;--danger: #ff6b6b;--ok: #51cf8e;--radius: 10px;color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Segoe UI,Hiragino Sans,Yu Gothic UI,sans-serif;-webkit-font-smoothing:antialiased}#root{max-width:720px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column}.app-header{display:flex;align-items:center;gap:12px;padding:14px 16px;border-bottom:1px solid var(--surface-2);position:sticky;top:0;background:var(--bg);z-index:10}.app-header h1{font-size:18px;margin:0;flex:1}.app-main{flex:1;padding:16px;display:flex;flex-direction:column;gap:16px}button{font:inherit;border:none;border-radius:var(--radius);padding:10px 16px;cursor:pointer;background:var(--surface-2);color:var(--text)}button.primary{background:var(--accent);color:#fff;font-weight:600}button.danger{background:transparent;color:var(--danger);border:1px solid var(--danger)}button.ghost{background:transparent;color:var(--text-dim)}button:disabled{opacity:.4;cursor:default}button.big{padding:16px 24px;font-size:17px}.card{background:var(--surface);border-radius:var(--radius);padding:16px}.card h2{margin:0 0 8px;font-size:16px}.stat-row{display:flex;gap:16px;flex-wrap:wrap}.stat{display:flex;flex-direction:column;gap:2px}.stat .label{font-size:11px;color:var(--text-dim)}.stat .value{font-size:20px;font-weight:700}.session-item{display:flex;flex-direction:column;gap:6px;background:var(--surface);border-radius:var(--radius);padding:14px 16px;cursor:pointer;border:1px solid transparent}.session-item:hover{border-color:var(--accent-dim)}.session-item .title{font-weight:600}.session-item .meta{font-size:12px;color:var(--text-dim);display:flex;gap:12px;flex-wrap:wrap}.session-item .summary{font-size:13px;color:var(--text-dim);white-space:pre-line;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.home-nav{display:flex;flex-direction:column;gap:10px}.home-nav-card{display:flex;align-items:center;gap:14px;width:100%;text-align:left;background:var(--surface);border:1px solid transparent;border-radius:var(--radius);padding:16px;cursor:pointer;color:inherit;font:inherit}.home-nav-card:hover{border-color:var(--accent-dim)}.home-nav-card .icon{font-size:24px}.home-nav-card .body{display:flex;flex-direction:column;gap:3px;flex:1;min-width:0}.home-nav-card .title{font-weight:600;display:flex;align-items:center;gap:8px}.home-nav-card .badge{font-size:11px;font-weight:400;color:var(--text-dim);background:var(--bg);border-radius:999px;padding:2px 8px}.home-nav-card .description{font-size:12px;color:var(--text-dim)}.home-nav-card .chevron{font-size:20px;color:var(--text-dim)}.link-button{background:none;border:none;padding:0;color:var(--accent);cursor:pointer;font:inherit;text-decoration:underline}.ai-summary{margin:0 0 10px;white-space:pre-line;line-height:1.8;font-size:14px}.summary-error{margin:0 0 8px;font-size:13px;color:var(--danger)}.genre-suggest{display:flex;align-items:center;flex-wrap:wrap;gap:6px;margin-top:12px}.genre-suggest .tag-chip{cursor:pointer;color:var(--accent);border:1px solid var(--accent-dim);background:transparent}textarea,input[type=text],input[type=password],input[type=number]{font:inherit;width:100%;background:var(--surface-2);color:var(--text);border:1px solid transparent;border-radius:var(--radius);padding:10px 12px}textarea:focus,input[type=text]:focus,input[type=password]:focus,input[type=number]:focus{outline:none;border-color:var(--accent)}.sync-form{display:flex;flex-direction:column;gap:10px}textarea.body-edit{min-height:40vh;line-height:1.6;resize:vertical}.progress-bar{height:8px;border-radius:4px;background:var(--surface-2);overflow:hidden}.progress-bar>div{height:100%;background:var(--accent);transition:width .2s}.reading-text{line-height:1.9;font-size:17px;white-space:pre-wrap;font-family:Georgia,Times New Roman,serif}.token{cursor:pointer;border-radius:4px;padding:1px}.token:hover{background:var(--surface-2)}.token.selected{background:var(--accent);color:#fff}.token.phrase-start{background:var(--accent-dim);color:#fff}.sentence{cursor:pointer;border-radius:4px;-webkit-tap-highlight-color:transparent}.sentence:hover{background:#4f8cff14}.sentence.active{background:#4f8cff29}.sentence-extra{display:block;margin:6px 0 10px;padding:8px 12px;background:var(--surface-2);border-left:3px solid var(--accent);border-radius:6px;font-size:14px;line-height:1.7;font-family:Segoe UI,Hiragino Sans,Yu Gothic UI,sans-serif}.sentence-extra .translation-loading{color:var(--text-dim)}.sentence-extra .translation-error{color:var(--danger);margin-right:8px}.timer-display{font-size:56px;font-weight:700;text-align:center;font-variant-numeric:tabular-nums;letter-spacing:2px}.step-nav{display:flex;gap:10px;justify-content:space-between;margin-top:4px}.step-indicator{font-size:12px;color:var(--text-dim)}.chip{display:inline-flex;align-items:center;gap:6px;background:var(--surface-2);border-radius:999px;padding:4px 12px;font-size:14px}.chip button{padding:0 4px;background:none;color:var(--text-dim);font-size:15px;line-height:1}.chip-list{display:flex;flex-wrap:wrap;gap:8px}.selection-panel{position:sticky;bottom:0;background:var(--surface);border-top:1px solid var(--surface-2);padding:12px 16px;display:flex;flex-direction:column;gap:10px;border-radius:var(--radius) var(--radius) 0 0}.annotate-item{display:flex;flex-direction:column;gap:8px;background:var(--surface);border-radius:var(--radius);padding:14px 16px}.annotate-item .word{font-weight:700;font-size:17px}.annotate-item .sentence{font-size:13px;color:var(--text-dim);font-style:italic}.annotate-item .fields{display:flex;gap:8px}.empty-note{color:var(--text-dim);text-align:center;padding:32px 0}.capture-buttons{display:flex;flex-direction:column;gap:10px}.image-previews{display:flex;gap:8px;flex-wrap:wrap}.image-preview-item{position:relative}.image-preview-item img{max-height:120px;border-radius:var(--radius);display:block}.image-preview-item .remove-image{position:absolute;top:4px;right:4px;padding:2px 8px;background:#0009;color:#fff;border-radius:999px;font-size:12px}.image-preview-item .crop-image{position:absolute;bottom:4px;left:4px;padding:2px 8px;background:#0009;color:#fff;border-radius:999px;font-size:12px}.crop-backdrop{position:fixed;inset:0;background:#000c;z-index:50;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:16px;gap:12px}.crop-hint{color:#fff;font-size:13px;margin:0}.crop-error{color:var(--danger);font-size:13px;margin:0}.crop-stage{position:relative;touch-action:none;user-select:none;-webkit-user-select:none}.crop-stage img{display:block;max-width:min(92vw,640px);max-height:65vh;border-radius:4px;pointer-events:none}.crop-rect{position:absolute;border:2px solid var(--accent);cursor:move}.crop-shade{position:absolute;background:#0000008c;pointer-events:none}.crop-handle{position:absolute;width:32px;height:32px}.crop-handle:after{content:"";position:absolute;inset:8px;background:var(--accent);border:2px solid #fff;border-radius:4px}.crop-handle.nw{top:-16px;left:-16px;cursor:nwse-resize}.crop-handle.ne{top:-16px;right:-16px;cursor:nesw-resize}.crop-handle.sw{bottom:-16px;left:-16px;cursor:nesw-resize}.crop-handle.se{bottom:-16px;right:-16px;cursor:nwse-resize}.crop-actions{width:100%;max-width:640px}.crop-actions button{background:#ffffff2e;color:#fff}.crop-actions button.ghost{background:#ffffff1a;color:#fff}.crop-actions button.primary{background:var(--accent);color:#fff}.vocab-item,.weak-item{background:var(--surface);border-radius:var(--radius);padding:14px 16px;display:flex;flex-direction:column;gap:8px}.vocab-item.weak{border:1px solid var(--warn)}.vocab-item{position:relative;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}.vocab-item input{-webkit-user-select:text;user-select:text}.vocab-item-head,.weak-item-head{display:flex;align-items:center;gap:10px}.vocab-item .lemma,.weak-item 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button{width:44px;height:64px;border-radius:999px;background:var(--surface-2);border:1px solid var(--accent-dim);font-size:18px;touch-action:none}.review-card{background:var(--surface);border-radius:var(--radius);padding:40px 20px;min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;cursor:pointer;border:1px solid var(--surface-2)}.review-word{font-size:32px;font-weight:700;display:flex;align-items:center;gap:10px;text-align:center}.review-meaning{font-size:22px;text-align:center}.review-hint{font-size:13px;color:var(--text-dim)}.review-actions{display:flex;gap:10px}.review-actions button{flex:1}.review-card.quiz{cursor:default;min-height:140px;padding:28px 20px}.quiz-choices{display:flex;flex-direction:column;gap:10px}.quiz-choice{text-align:left;padding:14px 16px;font-size:16px;background:var(--surface);border:1px solid var(--surface-2)}.quiz-choice.correct{border-color:var(--ok);background:#51cf8e26}.quiz-choice.wrong{border-color:var(--danger);background:#ff6b6b26}.mode-toggle{display:flex;gap:0;border-radius:var(--radius);overflow:hidden;width:fit-content}.mode-toggle button{border-radius:0}.mode-toggle button.active{background:var(--accent);color:#fff}.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-top:12px}.tag-chip{display:inline-flex;align-items:center;gap:4px;font-size:12px;color:var(--text-dim);background:var(--surface-2);border:none;border-radius:999px;padding:3px 10px}button.tag-chip{cursor:pointer}.tag-chip.active{background:var(--accent);color:#fff}.tag-chip button{background:none;padding:0 2px;color:inherit;font-size:12px;line-height:1}button.tag-add{background:none;color:var(--text-dim);font-size:12px;padding:3px 6px;opacity:.7}input.tag-input{width:130px;padding:3px 10px;font-size:12px;border-radius:999px}.tag-filter{display:flex;flex-wrap:wrap;gap:6px}.search-sort-row{display:flex;align-items:center;gap:8px}.search-sort-row input.search-input{font:inherit;flex:1;min-width:0;background:var(--surface-2);color:var(--text);border:1px solid transparent;border-radius:999px;padding:8px 14px}.search-sort-row input.search-input:focus{outline:none;border-color:var(--accent)}.search-sort-row select.sort-select{font:inherit;font-size:13px;background:var(--surface-2);color:var(--text);border:1px solid transparent;border-radius:var(--radius);padding:8px 10px;flex-shrink:0}.search-sort-row select.sort-select:focus{outline:none;border-color:var(--accent)}.tag-row.compact{margin:8px 0 10px}.session-item .tag-row{margin:0}.session-item .tag-chip{color:var(--accent);border:1px solid var(--accent-dim)}.stats-chart{display:block;width:100%;height:auto;margin-top:6px}.stats-chart .chart-grid{stroke:var(--surface-2);stroke-width:1}.stats-chart .chart-label{fill:var(--text-dim);font-size:8px}.stats-chart .chart-line{fill:none;stroke:var(--accent);stroke-width:2;stroke-linejoin:round;stroke-linecap:round}.stats-chart .chart-dot{fill:var(--accent)}.stats-chart .chart-bar{fill:var(--accent-dim)}