/* Fixed by user instruction, 2026-10-19. See 规则/18-阅读工作区与固定视觉规范.md. */
#tree{--directory-icon-width:14px;--directory-gap:6px}
#tree .directory-row{grid-template-columns:var(--directory-icon-width) var(--directory-number-width,24px) minmax(0,1fr);column-gap:var(--directory-gap);padding:3.5px 6px;min-height:27px;line-height:20px;text-align:left}
#tree .directory-row.file-link{grid-template-columns:var(--directory-icon-width) var(--directory-number-width,24px) minmax(0,1fr) 32px}
#tree .directory-symbol{width:var(--directory-icon-width);height:20px;display:flex;align-items:center;justify-content:center;transform:none}
#tree .directory-symbol svg{width:14px;height:14px;flex:none;transform-origin:center;transition:none}
#tree .directory-number{display:block;width:100%;min-width:0;font-size:inherit;line-height:20px;text-align:left;font-variant-numeric:tabular-nums;white-space:nowrap}
#tree .folder-title,#tree .file-title{grid-column:3;min-width:0;line-height:20px;overflow-wrap:anywhere}
#tree .doc-level{grid-column:4;line-height:20px;white-space:nowrap;text-align:right}
#tree .navigation-folder .directory-row{box-shadow:none}
#tree .domain{margin-bottom:4px}
#reading-workspace{position:absolute;inset:0;display:grid;grid-template-rows:minmax(0,var(--reading-height,65%)) 10px minmax(0,1fr);min-height:0;min-width:0;container:reading / inline-size;overflow:hidden}
#reading-workspace[hidden]{display:none}
#reading-region{position:relative;display:grid;grid-template-columns:200px minmax(0,1fr);min-width:0;min-height:0;overflow:hidden}
#reading-region.toc-hidden{grid-template-columns:0 minmax(0,1fr)}
#reading-region>#reader{grid-column:2;position:relative;min-width:0;min-height:0;padding:28px 28px 48px;overflow:auto;overscroll-behavior:contain}
#reading-region .document{max-width:840px;width:100%;margin:0 auto;font-size:15px;line-height:1.8;color:#fff}
#reading-region .document h1{font-size:30px;line-height:1.4}
#reading-region .document .section-heading{font-size:19px}
.body-heading-number{white-space:nowrap;font-variant-numeric:tabular-nums}
.document [data-body-level]{color:#fff;line-height:1.6;overflow-wrap:anywhere}
.document [data-body-level="2"]{font-size:17px}.document [data-body-level="3"]{font-size:16px}.document [data-body-level="4"],.document [data-body-level="5"],.document [data-body-level="6"],.document [data-body-level="7"]{font-size:15px}
.document>[role="heading"]{margin:16px 0 8px var(--article-indent,0px);font-weight:500}
.doc-section [role="heading"]{margin:16px 0 8px calc(var(--article-indent,32px) - 16px);font-weight:500}
#reading-region>#toc-panel{grid-column:1;grid-row:1;position:relative;inset:auto;width:auto!important;max-height:none;height:100%;padding:22px 8px 16px;background:transparent;border:0;display:flex;flex-direction:column;overflow:hidden}
#reading-region>#toc-panel[hidden]{display:none!important}
#reading-region #toc{max-height:none;min-height:0;flex:1;overflow:auto;scrollbar-width:thin}
#reading-region .toc-toolbar{flex:none;gap:0;padding:0}
#reading-region .toc-toolbar button{flex:1;min-width:0}
#reading-region #toc a{font-size:12px}
#reading-splitter{position:relative;background:#151a22;cursor:row-resize;touch-action:none;user-select:none;border-top:1px solid #748ead30;border-bottom:1px solid #748ead30;z-index:8;outline:none}
#reading-splitter:after{content:"";position:absolute;width:44px;height:2px;background:#8ca7ce88;left:calc(50% - 22px);top:3px}
#reading-splitter:hover,#reading-splitter:focus-visible,.is-resizing #reading-splitter{background:#2e4260}
.is-resizing{user-select:none}.is-resizing #reading-region{pointer-events:none}
#reading-map{position:relative;min-height:0;min-width:0;display:block;overflow:hidden;background:#121518}
.reading-map-header{position:absolute;top:8px;left:12px;right:12px;z-index:5;display:flex;align-items:center;gap:8px;min-height:0;padding:0;border:0;background:transparent;color:#b8c8e2;pointer-events:none}
.reading-map-header h2{font-size:12px;font-weight:500;margin:0;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;min-width:0;flex:1;text-shadow:0 1px 3px #000,0 0 6px #101318}
.reading-map-header #related-count{display:none}
.reading-map-header #mini-range-slot{flex:none;position:static;pointer-events:auto}
.reading-map-header .range-controls{position:static;display:flex;min-height:28px;font-size:10px}
.reading-map-header .range-controls button{min-width:40px;min-height:28px;padding:3px 6px}
.reading-map-header .range-current{padding:3px 8px}
.enter-reading-map{display:flex;align-items:center;gap:5px;flex:none;font-size:11px;padding:5px 8px;color:#bbd0f1;border:1px solid #6f96cb40;background:#171e29ee;pointer-events:auto}
.enter-reading-map svg{width:14px;height:14px}
#reading-map #article-graph{width:100%;height:100%;min-height:0;border:0;position:absolute;inset:0;background-color:#13171c}
#reading-map .article-map-tools{z-index:5;bottom:10px;right:12px}
#reading-map .inline-explorer-detail{max-height:calc(100% - 54px);top:48px;bottom:auto}
.resources-mode #reading-workspace{display:block!important}
.resources-mode #reading-region{display:block;height:100%}
.resources-mode #reading-region>#reader{height:100%;width:100%}
.resources-mode #reading-map,.resources-mode #reading-splitter{display:none!important}
@container reading (max-width:899px){#reading-region>#toc-panel{grid-area:auto}}
@container reading (max-width:1050px){#reading-region{grid-template-columns:180px minmax(0,1fr)}#reading-region.toc-hidden{grid-template-columns:0 minmax(0,1fr)}#reading-region>#reader{padding:24px 22px 40px}}
@container reading (max-width:899px){#reading-region,#reading-region.toc-hidden{grid-template-columns:0 minmax(0,1fr)}#reading-region>#toc-panel{position:absolute;left:0;top:0;bottom:0;width:244px!important;max-width:90%;background:#171c24;border-right:1px solid #7c9cc344;z-index:10}#reading-region>#reader{padding:20px 22px 36px}.reading-map-header{gap:6px;left:8px;right:8px}.reading-map-header h2{font-size:11px}.enter-reading-map span{display:none}.reading-map-header .range-current small{font-size:9px}}
@media(max-width:760px){.toolbar-tools [data-action="toc"]{display:inline-flex!important}#reading-region .document{font-size:14px}#reading-region .document h1{font-size:25px}#reading-region .document .section-heading{font-size:17px}#reading-region>#toc-panel:not([hidden]){display:flex!important}#reading-region #toc a{font-size:13px}.reading-map-header .range-controls button{min-width:30px}.reading-map-header h2{max-width:40vw}}

/* User requested on 2026-10-19: reclaim map area and resize the global directory. */
.workspace{position:relative}
#sidebar-splitter{position:absolute;top:0;bottom:0;left:calc(var(--rail-width) + var(--sidebar-width) - 4px);width:8px;z-index:25;cursor:col-resize;touch-action:none;user-select:none;outline:none}
#sidebar-splitter:after{content:"";position:absolute;top:0;bottom:0;left:3px;width:2px;background:transparent}
#sidebar-splitter:hover:after,#sidebar-splitter:focus-visible:after,.is-sidebar-resizing #sidebar-splitter:after{background:#8aace5}
.sidebar-hidden #sidebar-splitter{display:none}
.is-sidebar-resizing,.is-sidebar-resizing *{cursor:col-resize!important;user-select:none!important}
.is-sidebar-resizing .main,.is-sidebar-resizing #tree{pointer-events:none}
@media(max-width:760px){#sidebar-splitter{display:none}}

.reading-map-header .range-controls{padding:0;border:0;background:transparent;box-shadow:none}

/* Source links remain inline after the user-requested panel removal (2026-10-23). */
.content-citation{display:inline;padding:0 2px;border:0;background:none;color:#abc7ff;font:inherit;font-size:.8em;vertical-align:super;cursor:pointer}.content-citation:focus-visible{outline:1px solid currentColor}