.wb-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:10px 0 24px}.wb-heading h1{font-size:30px;margin:7px 0 9px}.wb-heading p{color:var(--text-secondary);margin:0;overflow-wrap:anywhere}.wb-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.wb-upload{position:relative;overflow:hidden;cursor:pointer}.wb-upload input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%}.wb-layout{display:grid;grid-template-columns:148px minmax(320px,1fr) 320px;gap:14px;align-items:start}.wb-panel{background:var(--bg-surface);border:1px solid var(--border);border-radius:15px;overflow:hidden;box-shadow:var(--shadow-sm);min-width:0}.wb-panel-heading{display:flex;align-items:center;justify-content:space-between;padding:17px 14px;border-bottom:1px solid var(--border);gap:8px}.wb-panel h2{font-size:15px;margin:0}.wb-panel-heading>span{font-size:12px;color:var(--text-secondary)}.wb-outline,.wb-controls{max-height:calc(100vh - 190px);overflow:auto;scrollbar-width:thin}.wb-outline #wb-nav{display:flex;flex-direction:column;gap:8px;padding:12px}.wb-nav-item{padding:12px 8px;border:1px solid var(--border);border-radius:9px;background:var(--bg-surface);text-align:left;color:var(--text-primary);cursor:pointer}.wb-nav-item small{display:block;margin-top:5px;color:var(--text-secondary);font-size:10px}.wb-nav-item.excluded{opacity:.45}.wb-nav-item.active{border-color:var(--accent);background:var(--accent-soft)}.wb-toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:12px;border-bottom:1px solid var(--border)}.wb-toolbar label{display:flex;align-items:center;gap:8px;font-size:12px;flex:1;min-width:160px}.wb-toolbar select{min-width:0;width:100%;max-width:300px;font-size:12px;padding:7px}.wb-toolbar .button{padding:8px 10px;font-size:12px}.wb-zoom{display:flex;align-items:center;gap:8px;margin-left:auto;font-size:12px}.wb-zoom button{padding:5px;border:0;background:transparent;color:var(--text-secondary);cursor:pointer}.wb-zoom button:hover{color:var(--accent)}.wb-preview-label{padding:9px 14px;font-size:11px;color:var(--text-secondary);border-bottom:1px solid var(--border)}.wb-canvas{height:calc(100vh - 300px);min-height:470px;overflow:auto;padding:24px;background:var(--bg-inset);scrollbar-width:thin}.wb-paper-wrap{margin:0 auto;position:relative}.wb-paper{width:794px;min-height:1123px;box-sizing:border-box;padding:80px;background:#fff;color:#161616;box-shadow:0 2px 15px #11182712;transform-origin:top left;overflow-wrap:break-word;font-family:serif;font-size:14px;line-height:1.5}.wb-paper p{margin:0;min-height:1em;white-space:pre-wrap;color:inherit}.wb-paper img{max-width:100%;height:auto;vertical-align:middle}.wb-paper table{border-collapse:collapse;max-width:100%;width:100%}.wb-paper td{border:1px solid #d9dce0;padding:5px}.wb-paper math{font-family:math;font-size:1em}.wb-unsupported{display:inline;background:#fff2ba;color:#725000;border:1px solid #eed67d;border-radius:3px;padding:2px 4px;font:12px sans-serif}.wb-textbox{display:inline-block;background:#5aa13b;color:#fff;border-radius:2px;padding:0 5px;margin-right:4px;font:12px/1.5 sans-serif;font-weight:600}.wb-textbox-title{display:inline-block;margin-left:10px;color:#5aa13b;font:700 22px/1.4 sans-serif;vertical-align:middle}.wb-empty{text-align:center;padding:90px 0;color:#7c8796;font-family:system-ui}.wb-empty>span{font-size:52px;color:#bbc3cd}.wb-empty h2{font-size:24px;margin:25px 0 15px;color:#3d4652}.wb-empty p{font-size:16px;line-height:1.8}.wb-preview-warnings{padding:0 12px;font-size:12px}.wb-preview-warnings p{padding:8px 10px;background:#fff5cf;color:#755412;border-radius:7px}.wb-selection-tools{display:flex;gap:8px;padding:12px 12px 0}.wb-selection-tools .button{padding:7px 10px;font-size:12px}.wb-operation-note{font-size:11px;line-height:1.7;color:var(--text-secondary);padding:0 14px}.wb-question{margin:10px;border:1px solid var(--border);border-radius:10px;overflow:hidden;background:var(--bg-surface)}.wb-question.active{border-color:var(--accent)}.wb-question.excluded{opacity:.55}.wb-question summary{display:flex;align-items:center;gap:6px;cursor:pointer;padding:12px 9px;background:var(--bg-hover);font-size:12px}.wb-question summary span{flex:1}.wb-question summary input{accent-color:var(--accent)}.wb-question summary button{border:0;border-radius:5px;background:var(--bg-inset);color:var(--text-secondary);padding:4px 6px;cursor:pointer}.wb-question .wb-question-body{padding:12px;font-size:12px;line-height:1.8;overflow-wrap:anywhere}.wb-question-body p{margin:0 0 8px}.wb-question-body small{color:var(--text-secondary)}.wb-school{color:var(--accent);font-size:11px}.wb-export{padding:15px;border-top:1px solid var(--border);background:var(--bg-hover)}.wb-export label{font-size:11px;color:var(--text-secondary)}.wb-export select{width:100%;margin:6px 0 12px;font-size:12px}.wb-export .button{font-size:12px;padding:9px 12px}.wb-download{display:block;margin-top:9px;padding:10px;background:var(--accent-soft);border-radius:8px;overflow-wrap:anywhere;color:var(--accent);font-size:12px}.wb-guide{margin-top:20px;padding:15px 18px;background:var(--bg-surface);border:1px solid var(--border);border-radius:12px;font-size:12px;color:var(--text-secondary);line-height:1.9}.wb-guide summary{cursor:pointer;color:var(--text-primary)}.wb-guide li{margin-bottom:8px}.wb-expanded{position:fixed;inset:12px;z-index:100;background:var(--bg-page);padding:12px;border-radius:18px;overflow:auto}.wb-expanded .wb-canvas{height:calc(100vh - 160px)}.wb-expanded .wb-outline,.wb-expanded .wb-controls{max-height:calc(100vh - 50px)}.wb-paper .wb-focus{outline:2px solid #93b4fa;outline-offset:5px}.wb-panel button:focus-visible,.wb-question summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
@media(min-width:1600px){.wb-layout{grid-template-columns:160px minmax(400px,1fr) 350px}}
@media(max-width:1200px){.wb-layout{grid-template-columns:minmax(300px,1fr) 290px}.wb-outline{display:none}.wb-heading{align-items:flex-start;flex-direction:column}}
@media(max-width:850px){.wb-layout{grid-template-columns:1fr}.wb-controls{max-height:none}.wb-canvas{min-height:340px;height:55vh}.wb-expanded{inset:0;padding:6px;border-radius:0}.wb-expanded .wb-canvas{height:55vh}.wb-heading h1{font-size:25px}.wb-toolbar label{flex-basis:100%}.wb-zoom{margin-left:0}.wb-expanded .wb-controls{max-height:none}}
@media(prefers-reduced-motion:no-preference){.wb-nav-item,.wb-question{transition:border-color .18s,background-color .18s,opacity .18s}}
/* Purpose-specific templates and adjustable, accessible panel separators. */
.wb-context{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:0 0 12px;padding:14px 18px;background:var(--bg-surface);border:1px solid var(--border);border-radius:12px}.wb-context label{display:flex;align-items:center;gap:8px;font-size:12px}.wb-context select{max-width:240px;padding:8px;font-size:12px}.wb-context #wb-pair-note{flex:1}.wb-settings{margin:0 0 16px;border:1px solid var(--border);border-radius:12px;background:var(--bg-surface);padding:14px 18px}.wb-settings>summary{cursor:pointer;font-size:13px;font-weight:600}.wb-setting-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;padding-top:18px}.wb-setting-grid h2{font-size:14px;margin:0 0 10px}.wb-switch{font-size:12px;display:flex;align-items:center;gap:8px;line-height:1.8}.wb-switch input{accent-color:var(--accent)}.wb-setting-grid .button{font-size:12px;padding:8px 12px}.wb-template-summary{font-size:12px;padding:12px;border:1px solid var(--border);border-radius:9px;margin-bottom:10px;overflow-wrap:anywhere}.wb-template-summary strong{display:block;margin-bottom:8px}.wb-template-summary dl{display:grid;grid-template-columns:minmax(90px,1fr) 1fr;gap:7px;margin:8px 0;color:var(--text-secondary)}.wb-template-summary dd{margin:0;color:var(--text-primary)}.wb-template-summary details summary{cursor:pointer;color:var(--accent)}.wb-template-summary .wb-missing{color:#966610}.wb-layout{--wb-left:160px;--wb-right:320px;--wb-left-gap:12px;--wb-right-gap:12px;grid-template-columns:var(--wb-left) var(--wb-left-gap) minmax(320px,1fr) var(--wb-right-gap) var(--wb-right);gap:0}.wb-outline{grid-column:1}.wb-preview{grid-column:3}.wb-controls{grid-column:5}.wb-divider{align-self:stretch;position:relative;cursor:col-resize;touch-action:none;min-height:280px;border-radius:8px}.wb-divider:before{content:'';position:absolute;top:35%;bottom:35%;width:3px;left:calc(50% - 1.5px);border-radius:3px;background:var(--border)}.wb-divider:hover:before,.wb-divider:focus-visible:before{background:var(--accent)}.wb-divider:focus-visible{outline:1px solid var(--accent)}#wb-left-divider{grid-column:2}#wb-right-divider{grid-column:4}.wb-layout.wb-hide-left{--wb-left:0px!important;--wb-left-gap:0px}.wb-layout.wb-hide-right{--wb-right:0px!important;--wb-right-gap:0px}.wb-hide-left .wb-outline,.wb-hide-left #wb-left-divider,.wb-hide-right .wb-controls,.wb-hide-right #wb-right-divider{display:none}.wb-layout.wb-dragging{user-select:none}.wb-paper [data-question-number]{cursor:pointer}.wb-paper [data-question-number].wb-focus{outline:2px solid #93b4fa;outline-offset:2px}.wb-question.active>summary{background:var(--accent-soft)}
@media(max-width:1350px) and (min-width:1101px){.wb-layout{grid-template-columns:minmax(300px,1fr) var(--wb-right-gap) var(--wb-right)}.wb-outline,#wb-left-divider{display:none}.wb-preview{grid-column:1}.wb-controls{grid-column:3}#wb-right-divider{grid-column:2}.wb-context #wb-toggle-outline{display:none}}
@media(max-width:1100px){.wb-layout{grid-template-columns:minmax(0,1fr);gap:14px}.wb-preview,.wb-controls{grid-column:1}.wb-outline,.wb-divider{display:none}.wb-controls{max-height:none}.wb-context #wb-toggle-outline{display:none}.wb-setting-grid{grid-template-columns:1fr}.wb-context #wb-pair-note{flex-basis:100%}.wb-canvas{height:55vh;min-height:340px}.wb-context label{min-width:0}.wb-context select{max-width:100%;min-width:0}.wb-expanded .wb-controls{max-height:none}.wb-expanded .wb-canvas{height:55vh}}
.wb-document-bar{display:flex;gap:12px;justify-content:space-between;align-items:center;margin-bottom:12px;padding:13px 18px;background:var(--bg-surface);border:1px solid var(--border);border-radius:12px}.wb-document-bar label{display:flex;align-items:center;gap:10px;font-size:12px;min-width:0;flex:1}.wb-document-bar select{padding:8px 10px;font-size:12px;max-width:520px;width:100%;min-width:0}.wb-state{font-size:11px;color:var(--text-secondary);border:1px solid var(--border);border-radius:20px;padding:7px 11px;white-space:nowrap;background:var(--bg-inset)}.wb-state.ready{background:var(--accent-soft);color:var(--accent);border-color:var(--accent-soft)}.wb-state.stale{background:#fff4d7;color:#8b6518;border-color:#f1dfaa}.wb-find{padding:12px 14px;display:grid;grid-template-columns:minmax(0,1fr) 92px;gap:8px;border-bottom:1px solid var(--border)}.wb-find label{display:flex;flex-direction:column;gap:6px;font-size:11px;color:var(--text-secondary);min-width:0}.wb-find input,.wb-find select{width:100%;min-width:0;padding:8px 7px;font-size:11px}.wb-find .fineprint{align-self:center}.wb-find .text-button{font-size:11px}.wb-export .wb-actions{display:grid;grid-template-columns:1fr 1fr}.wb-export #wb-export-both{grid-column:1/-1}.wb-download-group{border:1px solid var(--border);border-radius:10px;padding:8px 10px;margin-top:10px;background:var(--bg-surface)}.wb-download-group>strong{font-size:12px}.wb-download-group .wb-download{margin-top:8px}.wb-download-group>small{display:block;color:var(--text-secondary);font-size:11px;line-height:1.7;margin-top:7px}.wb-filter-empty{padding:20px 14px;font-size:12px;color:var(--text-secondary);line-height:1.7}.wb-export #wb-export-note:empty{display:none}.wb-nav-item:disabled{opacity:.55}.wb-question summary button:disabled{opacity:.3}.wb-question .wb-selected-state{font-size:10px;padding:2px 5px;background:var(--bg-inset);color:var(--text-secondary);border-radius:4px}
@media(max-width:600px){.wb-document-bar{align-items:stretch;flex-direction:column;padding:12px}.wb-document-bar label{align-items:flex-start;flex-direction:column;gap:7px}.wb-state{align-self:flex-start}.wb-find{grid-template-columns:minmax(0,1fr) 100px}}
/* Keep toolbar labels intact when the preview shares space with the editor. */
.wb-toolbar label{min-width:230px;white-space:nowrap}.wb-toolbar select{flex:1}.wb-toolbar .button,.wb-zoom,.wb-context label{flex-shrink:0;white-space:nowrap}
@media(max-width:600px){.wb-toolbar label{min-width:0;flex-basis:100%}.wb-zoom{gap:6px;flex-wrap:wrap;white-space:normal}.wb-document-bar label{white-space:nowrap}}

.wb-flow-guide{font-size:13px;color:var(--text-secondary);margin:0 0 16px}.wb-favorite{margin:8px 10px 4px 0}.wb-image-editor{margin:20px 0;border:1px solid var(--border);border-radius:12px;background:var(--bg-surface)}.wb-image-editor>summary{padding:14px;cursor:pointer;font-size:13px;font-weight:600}.wb-image-editor>summary span{color:var(--text-secondary);font-weight:400;margin-left:8px}.wb-image-fields{padding:0 14px 14px;display:grid;gap:12px}.wb-image-fields label{display:grid;gap:7px;font-size:12px;color:var(--text-secondary)}.wb-image-fields select,.wb-image-fields input{width:100%;min-width:0}.wb-image-size{display:grid;grid-template-columns:1fr 1fr;gap:12px}.wb-image-size output{padding:12px 0;font-size:13px;color:var(--text-primary)}.wb-image-original{text-align:center;padding:10px;background:var(--bg-inset);border-radius:8px;max-height:180px;overflow:auto}.wb-image-original img{max-width:180px!important;max-height:150px;object-fit:contain}.wb-image-original:empty{display:none}.wb-image-fields .wb-actions{flex-wrap:wrap}

.wb-image-original img{height:auto!important}

.wb-paper img{height:auto!important}
.wb-paper.wb-editing [data-edit-block]{cursor:text;outline:1px dashed transparent;outline-offset:2px;border-radius:2px}.wb-paper.wb-editing [data-edit-block]:hover{outline-color:#93b4fa;background:#f5f8ff}.wb-paper.wb-editing [data-edit-title]{cursor:pointer}.wb-paper [contenteditable="true"]{outline:2px solid var(--accent)!important;background:#fffdf3!important}.wb-paper .wb-edited{background:#fff4c2}.wb-paper [data-object]{cursor:default}#wb-edit-toggle[aria-pressed="true"]{background:var(--accent);color:#fff;border-color:var(--accent)}.wb-layout-edit{display:flex;flex-wrap:wrap;gap:6px 12px;align-items:center;margin:8px 0 2px;font-size:11px;color:var(--text-secondary)}.wb-layout-edit label{display:flex;align-items:center;gap:5px}.wb-layout-edit input[type=number]{width:52px;padding:3px 5px;font-size:11px}.wb-paper{position:relative}.wb-paper.wb-editing [data-edit-cell]{cursor:text}.wb-paper.wb-editing [data-edit-cell]:hover{background:#f5f8ff}.wb-paper .wb-deleted,.wb-paper .wb-deleted *{text-decoration:line-through;opacity:.5}.wb-paper .wb-deleted{background:#fde8e8!important}.wb-para-tools{position:absolute;z-index:5;display:flex;gap:6px;align-items:center;padding:4px 6px;background:#fff;border:1px solid #d9dce0;border-radius:8px;box-shadow:0 2px 8px #11182722;font:12px/1.4 system-ui,sans-serif;color:#3d4652;white-space:nowrap}.wb-para-tools button{border:0;border-radius:6px;padding:4px 8px;background:#fde8e8;color:#9b1c1c;cursor:pointer;font:inherit}.wb-para-tools button:hover{background:#f9d0d0}.wb-edit-deleted{display:grid;gap:6px}.wb-edit-deleted-row{display:flex;justify-content:space-between;gap:8px;align-items:center;font-size:11px;color:var(--text-secondary);background:var(--bg-inset);border-radius:6px;padding:6px 8px}.wb-edit-deleted-row span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.wb-batch{margin:10px 0;border:1px solid var(--border);border-radius:10px;padding:8px 10px;background:var(--bg-surface)}.wb-batch>summary{cursor:pointer;font-size:12px;font-weight:600}.wb-batch>summary span{font-weight:400;color:var(--text-secondary);margin-left:6px}.wb-batch-list{display:grid;gap:6px;margin:8px 0;max-height:220px;overflow:auto}.wb-batch-item{display:grid;grid-template-columns:auto 1fr auto;gap:6px;align-items:center;font-size:12px}.wb-batch-item small{color:var(--text-secondary)}
@keyframes wb-export-flash{0%,100%{box-shadow:0 0 0 0 transparent}30%,70%{box-shadow:0 0 0 4px var(--accent-soft),0 0 0 6px var(--accent)}}
.wb-export.wb-export-flash{animation:wb-export-flash 1.6s ease 1;border-radius:14px}
@media(prefers-reduced-motion:reduce){.wb-export.wb-export-flash{animation:none;outline:2px solid var(--accent)}}
.wb-export-warning{padding:10px 12px;border-radius:12px;background:#FFFBEB;border:1px solid #FDE68A;color:#92400E;line-height:1.7}
:root[data-theme=dark] .wb-export-warning{background:rgba(245,158,11,.12);border-color:rgba(245,158,11,.35);color:#FCD34D}
.wb-export-paper{margin:0 0 12px;padding:10px 12px;border-radius:12px;background:var(--accent-soft);color:var(--text-primary);font-size:13px;font-weight:650;line-height:1.6}
/* 导出窗口：勾选要导出的文件 */
.wb-export-dialog{width:min(640px,calc(100vw - 32px));max-height:calc(100vh - 40px);padding:0;border:none;border-radius:22px;background:var(--bg-surface);color:var(--text-primary);box-shadow:var(--shadow-lg)}
.wb-export-dialog::backdrop{background:var(--bg-overlay)}
.wb-export-dialog .dialog-header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;padding:20px 24px 14px;border-bottom:1px solid var(--border)}
.wb-export-dialog .dialog-header h2{margin:0 0 4px;font-size:20px}
.wb-export-dialog .wb-export{padding:16px 24px 20px;overflow:auto;max-height:calc(100vh - 170px)}
.wb-pick{display:flex;align-items:center;gap:12px;padding:12px 14px;margin-bottom:10px;border:1.5px solid var(--border);border-radius:14px;cursor:pointer}
.wb-pick:has(input:checked){border-color:var(--accent);background:var(--accent-soft)}
.wb-pick input{width:18px;height:18px;accent-color:var(--accent);flex:none}
.wb-pick span{display:flex;flex-direction:column;gap:3px;min-width:0}
.wb-pick small{color:var(--text-secondary);font-size:12px;overflow-wrap:anywhere}
.wb-pick-answer{flex-wrap:wrap;cursor:default}
.wb-pick-answer>label{display:flex;align-items:center;gap:12px;cursor:pointer;flex:1 1 220px}
.wb-pick-answer select{flex:1 1 200px;min-width:0}
.wb-pick:has(input:disabled){opacity:.6;cursor:not-allowed}
.wb-export-dialog .wb-batch{border:1.5px solid var(--border);border-radius:14px;padding:10px 14px;margin:6px 0 12px}
.wb-export-dialog .wb-batch summary{font-weight:700}
.wb-export-go{justify-content:flex-end}
.wb-export-go .button{min-width:160px}
.wb-legacy-export{display:none}