/* Shared shell and a small semantic palette; each archive keeps its own layout. */
:root{
  color-scheme:light;--page:#fff;--surface:#fff;--surface-muted:#f5f7f9;--hover:#f0f3f7;
  --text:#262626;--muted:#68727d;--subtle:#646e79;--line:#e1e6eb;--strong-line:#ccd4dd;
  --accent:#213c5b;--accent-hover:#335679;--accent-text:#365774;--on-accent:#fff;
  --selected:#edf2f7;--focus:#466b91;--danger:#a93042;--danger-bg:#fff0f2;--warning:#945b24;
  --site-header-height:121px;
  font-family:system-ui,-apple-system,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;
  color:var(--text);background:var(--page);font-synthesis:none;scroll-padding-top:calc(var(--site-header-height) + 16px)
}
:root[data-theme=dark]{
  color-scheme:dark;--page:#0d141d;--surface:#131e2b;--surface-muted:#182534;--hover:#1c2c3f;
  --text:#e5ebf2;--muted:#a6b3c4;--subtle:#8e9eb1;--line:#2a394c;--strong-line:#40546c;
  --accent:#95bdec;--accent-hover:#b5d3f7;--accent-text:#a7c8ef;--on-accent:#0c1929;
  --selected:#1c3048;--focus:#8ab5e9;--danger:#ffa0ad;--danger-bg:#3b202c;--warning:#e4b27c
}
*{box-sizing:border-box}
body{margin:0;background:var(--page);color:var(--text)}
/* Keyboard users can bypass the common header and blog's category rail. */
:focus-visible{outline:2px solid var(--focus);outline-offset:3px}
.skip-link{position:fixed;top:8px;left:16px;z-index:100;padding:12px 18px;border-radius:6px;background:var(--accent);color:var(--on-accent);font-size:14px;font-weight:700;text-decoration:none;transform:translateY(-160%)}
.skip-link:focus{transform:none}
main:focus{outline:none}
.archive-header{position:sticky;top:0;z-index:20;width:100%;background:var(--page);border-bottom:1px solid var(--line)}
.site-masthead,.site-tabs{width:min(1200px,calc(100% - 48px));margin:0 auto}
.site-masthead{height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.site-title{display:inline-flex;align-items:baseline;gap:8px;color:var(--text);text-decoration:none;font-size:26px;line-height:1.2;font-weight:800;letter-spacing:-.8px;white-space:nowrap}
.site-title span{color:var(--accent-text)}
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:40px;padding:7px 12px;border:1px solid var(--line);border-radius:20px;background:var(--surface);color:var(--muted);font:600 12px/1.5 system-ui,sans-serif;cursor:pointer;flex-shrink:0}
.theme-toggle:hover{background:var(--hover);color:var(--text)}
#theme-icon{font-size:17px;line-height:1}
.site-tabs{height:48px;display:flex;align-items:stretch;gap:28px;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:none}
.site-tabs::-webkit-scrollbar{display:none}
.site-tabs a{display:flex;align-items:center;flex:0 0 auto;position:relative;padding:0 1px;border-bottom:3px solid transparent;text-decoration:none;font-size:14px;line-height:1.5;font-weight:600;color:var(--muted);white-space:nowrap}
.site-tabs a:hover{color:var(--text)}
.site-tabs a[aria-current=page]{color:var(--accent-text);border-bottom-color:var(--accent-text)}
.archive-header :focus-visible{outline:2px solid var(--focus);outline-offset:-3px;border-radius:3px}
.module-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:54px;padding-top:8px}
.module-label{margin:0;font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--muted)}
.module-toolbar button{min-height:40px}
.module-links{display:flex;gap:18px;align-items:center;justify-content:flex-end;min-height:48px;font-size:12px}
.module-links a{color:var(--muted)}
.home-page{width:min(900px,calc(100% - 48px));margin:0 auto;padding:64px 0;min-height:calc(100dvh - var(--site-header-height))}
.home-page .module-label{margin-bottom:20px}
.home-page h1{font-size:clamp(24px,4vw,36px);line-height:1.4;letter-spacing:-1px;margin:0 0 18px;font-weight:700}
.home-page p{font-size:15px;line-height:1.8;color:var(--muted)}
.home-page .home-note{font-size:12px;margin-top:40px;max-width:560px}
/* Inputs and native dialogs retain the archive's existing sizes and behaviors. */
.primary,.toast{color:var(--on-accent)}
.primary:hover{color:var(--on-accent)}
.score,.rating-value{color:var(--text)}
.stats-popover{top:calc(var(--site-header-height) + 90px)}
.modal::backdrop{background:#050c16a6}
.search-panel::backdrop{background:#050c1680}
.footer,.site-footer{color:var(--subtle)}
body[data-module=curiosity] .shell{min-height:calc(100dvh - var(--site-header-height))}
body[data-module=curiosity] .intro{margin:28px 0}
body[data-module=admin] main{min-height:calc(100dvh - var(--site-header-height) - 54px)}
/* Blog: a left category rail and a right list/article, with the same order in the DOM. */
body[data-module=blog] .site-layout{max-width:1200px;grid-template-columns:260px minmax(0,1fr);column-gap:44px;min-height:calc(100dvh - var(--site-header-height));align-items:start}
body[data-module=blog] .sidebar{padding:32px 24px 40px 0;border-left:0;border-right:1px solid var(--line);min-height:calc(100dvh - var(--site-header-height));position:sticky;top:var(--site-header-height);max-height:calc(100dvh - var(--site-header-height));overflow-y:auto;scrollbar-width:thin}
body[data-module=blog] .main-column{padding:34px 0 70px}
body[data-module=blog] .section-heading{border-bottom:1px solid var(--line);align-items:center;padding-bottom:22px}
body[data-module=blog] .section-heading h1{font-size:21px}
body[data-module=blog] .post-item{padding:28px 0}
.category-panel{padding:14px 12px;border:1px solid var(--line);border-radius:9px;background:var(--surface-muted);margin-bottom:24px}
.category-panel>summary{font-size:13px;font-weight:700;cursor:pointer;line-height:1.6;padding:4px 0;color:var(--text)}
.category-tree,.category-tree ul{list-style:none;margin:0;padding:0}
.category-tree{margin-top:10px}
.category-tree ul{margin-left:10px;padding-left:10px;border-left:1px solid var(--strong-line)}
.category-tree li{margin:2px 0}
.category-tree .side-link{min-height:40px;padding:8px;border-radius:5px;align-items:center;font-size:12px;color:var(--muted);font-weight:400}
.category-tree .side-link span:first-child{min-width:0;overflow-wrap:anywhere}
.category-tree .side-link .num{color:var(--subtle);font-variant-numeric:tabular-nums;flex-shrink:0}
.category-tree .side-link:hover{background:var(--hover);color:var(--text)}
.category-tree .side-link[aria-pressed=true]{background:var(--selected);color:var(--accent-text);font-weight:700}
.category-tree .side-link[data-ancestor=true]{color:var(--accent-text)}
.side-section>summary{font-size:12px;font-weight:650;cursor:pointer;padding:4px 0;margin-bottom:12px;color:var(--muted)}
.sidebar .blog-manage{display:inline-flex;align-items:center;min-height:44px;font-size:12px;color:var(--muted)}
/* Vditor's editor and content themes follow the shared palette, including late-loaded content CSS. */
:root .article-content.vditor-reset{color:var(--text);background:var(--page)}
:root .article-content.vditor-reset :is(h1,h2,h3,h4,h5,h6){color:var(--text);border-color:var(--line)}
:root .article-content.vditor-reset :is(blockquote,hr,td,th){border-color:var(--line)}
:root .article-content.vditor-reset :is(pre,code){background:var(--surface-muted)}
:root .article-content.vditor-reset a{color:var(--accent-text)}
:root .article-content.vditor-reset table tr{background:var(--page);border-color:var(--line)}
:root .article-content.vditor-reset table tr:nth-child(2n){background:var(--surface-muted)}
:root .article-content.vditor-reset blockquote{color:var(--muted)}
:root .vditor{--panel-background-color:var(--surface);--textarea-background-color:var(--surface);--toolbar-background-color:var(--surface-muted);--toolbar-icon-color:var(--muted);--text-color:var(--text);--border-color:var(--line)}
:root .vditor-toolbar{background:var(--surface-muted)!important}
:root .vditor :is(.vditor-wysiwyg,.vditor-ir,.vditor-sv,.vditor-preview){color:var(--text);background:var(--surface)}
@media(max-width:900px){body[data-module=blog] .site-layout{grid-template-columns:220px minmax(0,1fr);column-gap:24px}body[data-module=blog] .sidebar{padding-right:16px}}
@media(max-width:680px){
  :root{--site-header-height:109px}
  .site-masthead,.site-tabs{width:calc(100% - 28px)}
  .site-masthead{height:60px}.site-title{font-size:22px}.theme-toggle{min-height:44px;padding:6px 10px}
  .site-tabs{gap:23px}.site-tabs a{font-size:13px}
  .module-toolbar{min-height:48px;padding-top:4px}
  .home-page{width:calc(100% - 32px);padding-top:36px}
  body[data-module=blog] .site-layout{display:flex;flex-direction:column;padding:0 16px;gap:0}
  body[data-module=blog] .sidebar{position:static;max-height:none;min-height:0;display:block;width:100%;border:0;border-bottom:1px solid var(--line);padding:16px 0 0;order:0;overflow:visible}
  body[data-module=blog] .main-column{width:100%;padding-top:24px;order:1}
  .category-panel{margin-bottom:16px;padding:10px 12px}
  .category-panel>summary{min-height:44px;display:list-item;padding:10px 0}
  .category-tree{max-height:300px;overflow:auto;overscroll-behavior:contain}
  .category-tree .side-link{min-height:44px}
  body[data-module=blog] .sidebar>.side-section{display:none}
  body[data-module=blog] .sidebar>.blog-manage{display:none}
  .category-panel[open]~.side-section{display:block!important;margin:0 0 18px}
  .category-panel[open]~.blog-manage{display:inline-flex!important}
  body[data-module=blog] .sidebar .side-search{display:none!important}
  .article-header h1{font-size:26px}
  body :is(input:not([type=checkbox]):not([type=range]),select,textarea){font-size:16px}
  body :is(.text-button,.side-section>summary,.pager button,.clear-filter,.mobile-clear-filter){min-height:44px}
  body[data-module=blog] .article-actions{flex-wrap:wrap}
}
@media(prefers-reduced-motion:no-preference){.theme-toggle,.site-tabs a{transition:color .15s,background-color .15s}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media(forced-colors:active){.site-tabs a[aria-current=page],.category-tree .side-link[aria-pressed=true]{outline:2px solid Highlight;outline-offset:-2px}}