:root{font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,sans-serif;color:#28312d;background:#f4f1e9;font-synthesis:none;--bg: #f4f1e9;--surface: #fffdf8;--surface-muted: #f0eee7;--text: #28312d;--muted: #68716c;--border: #d9ddd5;--accent: #557363;--accent-dark: #3f5e4e;--accent-soft: #dfe8e1;--warm: #c48b3c;--warm-soft: #f6ead5;--danger: #a64b48;--danger-soft: #f7e5e2;--shadow: 0 5px 18px rgba(48, 60, 52, .06)}*{box-sizing:border-box}html,body,#root{min-width:0;min-height:100%;margin:0}body{overflow-x:hidden;background:var(--bg);color:var(--text)}button,input,select,textarea{max-width:100%;font:inherit}button{min-height:44px;padding:0 16px;border:0;border-radius:10px;background:var(--accent);color:#fff;font-weight:700;cursor:pointer}button:active{transform:translateY(1px)}button:disabled{opacity:.5;cursor:not-allowed}.app-shell{width:min(100%,960px);min-height:100vh;margin:0 auto;padding:24px 16px 48px}.app-header{margin:10px 2px 22px}.app-header h1{margin:4px 0 16px;font-size:clamp(1.65rem,6vw,2.35rem)}.eyebrow{margin:0;color:var(--accent-dark);font-size:.72rem;font-weight:800;letter-spacing:.1em}.language-tabs{display:flex;width:fit-content;gap:10px;padding:5px;border:1px solid var(--border);border-radius:13px;background:var(--surface-muted)}.language-tabs button{min-width:92px;min-height:42px;background:transparent;color:var(--muted)}.language-tabs button.active{background:var(--accent-soft);color:var(--accent-dark);box-shadow:0 1px 4px #303c341a}.panel{margin:14px 0;padding:18px;border:1px solid var(--border);border-radius:14px;background:var(--surface);box-shadow:var(--shadow)}.panel h2{margin:2px 0 14px;font-size:1.08rem}.section-heading,.category-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.create-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(130px,.55fr) auto;gap:9px}input,select,textarea{min-height:44px;border:1px solid #cbd2ca;border-radius:10px;background:#fff;color:var(--text);padding:0 12px}.secondary,.format-tabs button,.quiet{background:var(--surface-muted);color:var(--accent-dark)}.quiet{min-height:40px;padding:0 11px;font-size:.82rem}.danger-text{color:var(--danger)}.notice{padding:11px 12px;border-radius:9px;background:var(--accent-soft);color:var(--accent-dark);line-height:1.5}.category-list{display:flex;flex-direction:column;gap:12px}.category-panel{width:100%;margin:0}.category-title{display:flex;flex:1;min-width:0;align-items:center;justify-content:space-between;gap:12px;padding:0;background:transparent;color:var(--text);text-align:left}.category-title small{flex:none;color:var(--muted);font-weight:500}.category-actions{display:flex;flex:none;gap:6px}.book-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;margin-top:14px}.book-row{display:flex;align-items:center;gap:7px;min-width:0;padding:8px;border:1px solid var(--border);border-radius:11px;background:var(--surface-muted)}.book-open{flex:1;min-width:0;background:transparent;color:var(--text);text-align:left;overflow-wrap:anywhere}.empty-hint,.hint,.storage-note{color:var(--muted);font-size:.85rem;line-height:1.55}.import-workflow{min-width:0;margin-bottom:14px}.import-workflow>.panel{margin-top:10px}.import-targets{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;padding:14px;border:1px solid var(--border);border-radius:12px;background:var(--surface)}.import-targets label{display:grid;gap:5px;min-width:0;color:var(--muted);font-size:.8rem}.import-warning{padding:10px 12px;background:var(--warm-soft);color:#79551f;border-radius:9px}.file-button{min-height:40px;display:inline-grid;align-items:center;padding:0 12px;border:1px solid var(--border);border-radius:10px;color:var(--accent-dark);font-size:.85rem;font-weight:700;cursor:pointer}.file-button input{display:none}.format-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.format-tabs button{min-height:38px}.format-tabs button.active{background:var(--accent-soft);color:var(--accent-dark)}textarea{display:block;width:100%;min-height:160px;margin:12px 0 8px;padding:12px;resize:vertical;line-height:1.5}.counts{display:flex;gap:8px;margin:14px 0 8px}.counts span{padding:6px 9px;border-radius:7px;background:var(--surface-muted);font-size:.85rem}.preview ul{padding:0;list-style:none}.preview li{display:flex;gap:12px;padding:8px 0;border-bottom:1px solid var(--border)}.error{color:var(--danger)}.review-header{position:sticky;top:0;z-index:2;padding:12px 0;background:var(--bg)}.review-header h2{margin:2px 0 8px;font-size:1.15rem}.review-meta{display:flex;gap:14px;color:var(--muted);font-size:.85rem}.progress-track{height:7px;margin-top:10px;overflow:hidden;border-radius:99px;background:#d9ddd5}.progress-track i{display:block;height:100%;border-radius:inherit;background:var(--accent);transition:width .15s}.review-tools,.button-row{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}.word-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.word-row{display:flex;min-width:0;min-height:180px;flex-direction:column;justify-content:space-between;gap:12px;padding:14px;border:1px solid var(--border);border-left:4px solid #aebbb3;border-radius:12px;background:var(--surface);box-shadow:var(--shadow)}.word-main{min-width:0}.word-line{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px}.word-line strong{font-size:1.05rem}.word-line small{color:var(--muted)}.error-badge{padding:3px 6px;border-radius:6px;background:var(--surface-muted);color:var(--muted);font-size:.75rem}.meaning-toggle{min-height:40px;margin-top:8px;padding:0 9px;background:var(--accent-soft);color:var(--accent-dark);font-size:.8rem}.word-meaning{margin:8px 0 0;color:#515d56;line-height:1.55;overflow-wrap:anywhere;white-space:pre-wrap}.word-actions{margin-top:auto}.word-actions>.quiet{display:block;margin:0 0 7px auto}.answer-buttons{display:flex;gap:7px}.answer-buttons button{flex:1;min-width:0;padding:0 9px}.known{background:var(--accent)}.unknown{background:var(--danger)}.error-1{border-left-color:var(--warm)}.error-2{border-left-color:#bd7048}.error-3,.error-4{border-left-color:var(--danger)}.error-4{background:#fff9f7}.error-2 .error-badge,.error-3 .error-badge,.error-4 .error-badge{background:var(--danger-soft);color:#873d38}.weak-group{padding:12px 0;border-top:1px solid var(--border)}.weak-group-title{display:flex;align-items:center;gap:8px}.weak-word{display:grid;grid-template-columns:minmax(80px,.8fr) 1fr;gap:4px 10px;padding:9px 0 0;font-size:.88rem}.weak-word span,.weak-word em,.muted{color:var(--muted);font-style:normal}.weak-word em{grid-column:1/-1;font-size:.76rem}.result-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}.result-grid span{padding:13px;border-radius:10px;background:var(--surface-muted);color:var(--muted)}.result-grid b{display:block;margin-top:4px;color:var(--text);font-size:1.3rem}@media(max-width:620px){.app-shell{padding:18px 12px 40px}.language-tabs{width:100%}.language-tabs button{flex:1}.create-row,.import-targets{grid-template-columns:1fr}.section-heading{align-items:flex-start}.category-heading{align-items:stretch;flex-direction:column}.category-actions{justify-content:flex-end}.book-grid,.word-list{grid-template-columns:1fr}.word-row{min-height:0}.file-button{width:100%}.counts{gap:5px}.counts span{flex:1;padding:6px 3px;text-align:center}.review-meta{justify-content:space-between;gap:4px}.review-tools button{flex:1 1 calc(50% - 4px);padding:0 8px}.preview li{flex-direction:column;gap:3px}}@media(min-width:900px){.book-grid,.word-list{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(hover:none){button:hover{filter:none}}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,.file-button:focus-within{outline:3px solid rgba(85,115,99,.32);outline-offset:2px}.book-detail h1{margin:4px 0 8px;overflow-wrap:anywhere}