:root{--ink:#17212b;--muted:#66727e;--line:#d9dee3;--soft:#f4f6f7;--paper:#fff;--accent:#167c65;--accent-dark:#0f614f;--warn:#9a5d00}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--soft);font:15px/1.55 system-ui,"Microsoft YaHei",sans-serif}.topbar{height:64px;padding:0 28px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}.brand,.top-actions{display:flex;align-items:center;gap:10px}.brand-mark{display:grid;place-items:center;width:32px;height:32px;background:var(--ink);color:#fff;font-weight:800;border-radius:5px}.top-actions{gap:8px}button{font:inherit}.primary{border:0;border-radius:5px;background:var(--accent);color:#fff;padding:10px 17px;font-weight:700;cursor:pointer}.primary:hover{background:var(--accent-dark)}.icon-button{width:38px;height:38px;border:1px solid var(--line);background:#fff;border-radius:5px;cursor:pointer;font-size:20px}.upload-view{max-width:980px;margin:0 auto;padding:64px 24px}.upload-copy{max-width:700px;margin-bottom:32px}.eyebrow{color:var(--accent);font-weight:800;margin:0 0 8px}.upload-copy h1{font-size:38px;line-height:1.22;margin:0 0 14px;letter-spacing:0}.upload-copy>p:last-child{font-size:17px;color:var(--muted);margin:0}.dropzone{height:280px;border:2px dashed #aab5bd;background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;cursor:pointer;border-radius:7px}.dropzone.drag{border-color:var(--accent);background:#edf8f4}.dropzone input{display:none}.upload-icon{display:grid;place-items:center;width:54px;height:54px;border-radius:50%;background:#e9f4f1;color:var(--accent);font-size:27px;font-weight:700}.dropzone strong{font-size:18px}.dropzone small{color:var(--muted)}.workflow{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px}.workflow div{display:flex;align-items:center;gap:10px;border-top:1px solid var(--line);padding-top:14px}.workflow b{color:var(--accent)}.loading-view{height:calc(100vh - 64px);display:flex;flex-direction:column;justify-content:center;align-items:center}.loader{width:42px;height:42px;border:4px solid #dce7e3;border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-view h2{margin:18px 0 3px}.loading-view p{color:var(--muted);margin:0}.editor-view{height:calc(100vh - 64px);display:grid;grid-template-columns:280px 1fr}.sidebar{background:#fff;border-right:1px solid var(--line);padding:18px;overflow:auto}.file-summary{display:flex;gap:10px;align-items:center;padding-bottom:16px;border-bottom:1px solid var(--line)}.file-summary>div{min-width:0}.file-summary strong,.file-summary small{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-summary small{color:var(--muted)}.file-icon{display:grid;place-items:center;flex:0 0 36px;height:42px;border-radius:4px;background:#e8f2ef;color:var(--accent);font-weight:800}.warning{margin:14px 0;padding:10px;background:#fff6df;color:var(--warn);font-size:13px;border-left:3px solid #d89614}.side-title{display:flex;align-items:center;justify-content:space-between;margin:18px 0 9px;font-weight:800}.side-title .icon-button{width:30px;height:30px;font-size:18px}.sidebar nav{display:grid;gap:5px}.nav-item{display:flex;align-items:center;width:100%;gap:9px;border:0;background:transparent;text-align:left;padding:9px;border-radius:4px;cursor:pointer}.nav-item:hover,.nav-item.active{background:#eaf3f0;color:var(--accent)}.nav-number{width:25px;height:25px;display:grid;place-items:center;border:1px solid currentColor;border-radius:50%;font-size:12px}.nav-item span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.workspace{min-width:0;overflow:auto;padding:24px 30px 60px}.document-bar{max-width:900px;margin:0 auto 16px;display:flex;justify-content:space-between;gap:20px}.document-bar>input{min-width:0;flex:1;border:0;background:transparent;font-size:24px;font-weight:800;padding:5px}.view-tabs{display:flex;border:1px solid var(--line);border-radius:5px;overflow:hidden;background:#fff}.view-tabs button{border:0;border-right:1px solid var(--line);background:#fff;padding:7px 14px;cursor:pointer}.view-tabs button:last-child{border:0}.view-tabs button.active{background:var(--ink);color:#fff}.question-card{max-width:900px;margin:0 auto 16px;background:#fff;border:1px solid var(--line);border-radius:6px;padding:22px}.card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.card-head strong{font-size:17px}.delete-button{border:0;background:transparent;color:#a43b3b;cursor:pointer}.field{display:block;margin:0 0 14px}.field>span{display:block;font-size:13px;font-weight:700;color:#53606b;margin-bottom:5px}.field textarea,.field input{width:100%;border:1px solid #cfd6dc;border-radius:4px;padding:10px 11px;font:inherit;resize:vertical}.stem-input{min-height:112px}.option-row{display:grid;grid-template-columns:36px 1fr 34px;gap:8px;margin-bottom:7px}.option-label{display:grid;place-items:center;background:#eef2f3;border-radius:4px;font-weight:800}.option-row input{width:100%;border:1px solid #cfd6dc;border-radius:4px;padding:9px}.remove-option{border:0;background:transparent;color:#8a3434;font-size:18px;cursor:pointer}.add-option{border:1px dashed #aeb8bf;background:#fff;padding:8px 12px;border-radius:4px;cursor:pointer}.answer-grid{display:grid;grid-template-columns:1fr 2fr;gap:12px;margin-top:17px;padding-top:17px;border-top:1px solid var(--line)}.question-images{display:flex;gap:10px;overflow:auto;margin:12px 0}.question-images img{height:130px;max-width:230px;object-fit:contain;border:1px solid var(--line)}#previewFrame{display:block;width:min(100%,900px);height:calc(100vh - 150px);margin:0 auto;border:1px solid var(--line);background:#fff}.toast{position:fixed;right:24px;bottom:24px;background:#17212b;color:#fff;padding:11px 16px;border-radius:5px;box-shadow:0 8px 30px #0003}@media(max-width:760px){.topbar{padding:0 14px}.upload-view{padding:36px 16px}.upload-copy h1{font-size:29px}.workflow{grid-template-columns:1fr}.editor-view{display:block;height:auto}.sidebar{border-right:0;border-bottom:1px solid var(--line)}.workspace{padding:18px 12px}.answer-grid{grid-template-columns:1fr}.document-bar{align-items:flex-start;flex-direction:column}.editor-view .sidebar nav{display:flex;overflow:auto}.nav-item{min-width:120px}}
.brand-button{padding:0;border:0;background:transparent;color:var(--ink);cursor:pointer}.header-actions{display:flex;align-items:center;gap:8px}.secondary{border:1px solid var(--line);border-radius:5px;background:#fff;color:var(--ink);padding:10px 14px;font-weight:700;cursor:pointer}.secondary:hover{background:#f5f7f7}.document-fields{min-width:0;flex:1}.document-fields>#documentTitle{width:100%;border:0;background:transparent;font-size:24px;font-weight:800;padding:5px}.metadata-fields{display:flex;gap:8px;margin-top:5px}.metadata-fields input,.library-filters input,.library-filters select{min-width:0;border:1px solid var(--line);border-radius:4px;background:#fff;padding:8px 10px;font:inherit}.metadata-fields input:first-child{max-width:180px}.metadata-fields input:last-child{flex:1}.nav-select{width:15px;height:15px;margin:0;accent-color:var(--accent)}.card-actions{display:flex;gap:12px;align-items:center}.question-select{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--muted)}.question-select input{accent-color:var(--accent)}.library-view{max-width:1100px;margin:0 auto;padding:42px 24px 80px}.library-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:24px}.library-head h1{margin:0;font-size:30px}.library-filters{display:grid;grid-template-columns:minmax(200px,2fr) 1fr 1fr;gap:10px;margin-bottom:20px}.library-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.library-card{background:#fff;border:1px solid var(--line);border-radius:6px;padding:18px}.library-card h2{font-size:17px;margin:0 0 8px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.library-meta{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0 18px}.pill{padding:2px 7px;border-radius:999px;background:#eaf3f0;color:var(--accent);font-size:12px}.pill.category{background:#eef2f3;color:#53606b}.library-card footer{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:13px}.library-card .card-buttons{display:flex;gap:8px}.text-button{border:0;background:transparent;color:var(--accent);font-weight:700;cursor:pointer;padding:5px}.text-button.danger{color:#a43b3b}.library-empty{color:var(--muted);padding:36px 0;text-align:center}@media(max-width:760px){.topbar{height:auto;min-height:64px;padding:8px 14px;align-items:flex-start}.header-actions{max-width:100%;flex-wrap:wrap;justify-content:flex-end;gap:5px}.header-actions>.secondary,.top-actions .secondary{display:block;padding:7px 9px}.top-actions{gap:4px}.top-actions .primary{padding:7px 9px}.editor-view{height:calc(100vh - 80px)}.metadata-fields{width:100%;flex-direction:column}.metadata-fields input:first-child{max-width:none}.library-view{padding:32px 16px}.library-head{align-items:flex-start;flex-direction:column}.library-filters,.library-list{grid-template-columns:1fr}}
:where([hidden]){display:none!important}
.library-tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:16px}.library-tabs button{border:0;background:transparent;border-bottom:2px solid transparent;padding:10px 14px;color:var(--muted);font-weight:700;cursor:pointer}.library-tabs button.active{color:var(--ink);border-bottom-color:var(--accent)}.library-filter-panel{display:grid;gap:12px;margin-bottom:16px}.filter-row{display:flex;align-items:flex-start;gap:14px}.filter-label{width:44px;flex:0 0 44px;color:var(--muted);font-weight:700;padding-top:5px}.filter-row>input{flex:1;border:1px solid var(--line);border-radius:4px;background:#fff;padding:8px 10px;font:inherit}.filter-checks{display:flex;flex-wrap:wrap;gap:7px}.filter-checks label{display:flex;align-items:center;gap:4px;padding:4px 8px;background:#f1f5f4;border-radius:4px;font-size:13px}.filter-checks input,.library-check input,.library-toolbar input{accent-color:var(--accent)}.library-toolbar{display:flex;align-items:center;gap:14px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:10px 0;margin-bottom:16px;color:var(--muted);font-size:13px}.library-toolbar label{display:flex;align-items:center;gap:6px}.library-toolbar #librarySelectionSummary{margin-right:auto}.question-library-card{position:relative;padding-top:42px}.library-check{position:absolute;right:14px;top:14px;display:flex;align-items:center;gap:4px;color:var(--muted);font-size:12px}.question-snippet{margin:0;color:var(--ink);line-height:1.55;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}@media(max-width:760px){.filter-row{flex-direction:column;gap:6px}.filter-label{width:auto}}
.upload-modes{display:flex;gap:8px;margin:0 0 14px}.upload-modes button{border:1px solid var(--line);background:#fff;border-radius:5px;padding:8px 12px;cursor:pointer}.upload-modes button.active{background:var(--ink);border-color:var(--ink);color:#fff}
.batch-settings{margin:0 0 14px;padding:14px 16px;background:#fff;border:1px solid var(--line);border-radius:6px}.batch-settings>span{display:block;font-weight:700}.batch-starts{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;margin-top:10px}.batch-starts label{display:flex;align-items:center;gap:7px;min-width:0;color:var(--muted);font-size:13px;font-weight:700}.batch-start{flex:1;width:auto;min-width:0;border:1px solid var(--line);border-radius:4px;padding:7px 8px;font:inherit;color:var(--ink)}@media(max-width:760px){.batch-starts{grid-template-columns:1fr}.batch-starts label{justify-content:space-between}.batch-start{max-width:190px}}
.preset-tags{margin:0 0 14px;padding:14px 16px;background:#fff;border:1px solid var(--line);border-radius:6px}.preset-tags>label{display:flex;align-items:center;gap:10px;font-weight:700}.preset-tags select{border:1px solid var(--line);border-radius:4px;background:#fff;padding:7px 9px;font:inherit}.preset-tag-groups{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:12px}.preset-tag-groups>div>span{display:block;color:var(--muted);font-size:13px;font-weight:700;margin-bottom:6px}.tag-checkboxes{display:flex;flex-wrap:wrap;gap:7px}.tag-checkboxes label{display:flex;align-items:center;gap:4px;padding:3px 7px;background:#f1f5f4;border-radius:4px;font-size:13px}.tag-checkboxes input{accent-color:var(--accent)}@media(max-width:760px){.preset-tag-groups{grid-template-columns:1fr}}
.settings-dialog{width:min(420px,calc(100vw - 32px));border:1px solid var(--line);border-radius:6px;padding:22px;box-shadow:0 18px 60px #0004}.settings-dialog::backdrop{background:#17212b88}.settings-dialog h2{font-size:19px;margin:0 0 18px}.settings-note{margin:-8px 0 16px;color:var(--muted);font-size:13px}.dialog-actions{display:flex;justify-content:flex-end;gap:8px}
.card-actions select,.subquestion-head select{border:1px solid var(--line);border-radius:4px;background:#fff;padding:6px 8px;font:inherit;color:var(--ink)}.subquestion-field{padding-top:14px;border-top:1px solid var(--line)}.subquestion-editor{margin:10px 0;padding:12px;border:1px solid #dfe4e7;border-radius:5px;background:#fafbfb}.subquestion-head{display:flex;align-items:center;gap:8px;margin-bottom:8px}.subquestion-head strong{margin-right:auto}.subquestion-editor>textarea{width:100%;min-height:70px;border:1px solid #cfd6dc;border-radius:4px;padding:9px 10px;font:inherit;resize:vertical}.sub-options{margin-top:8px}.remove-subquestion{border:0;background:transparent;color:#a43b3b;cursor:pointer}.add-sub-option{border:0;background:transparent;color:var(--accent);cursor:pointer;padding:4px 0;font-weight:700}