.reading-page { --reading-muted: #536b5c; }
.reading-header-tools { display: flex; align-items: center; gap: 24px; }
.page-progress { position: relative; display: flex; align-items: center; gap: 12px; color: var(--reading-muted); cursor: default; }
.page-progress[hidden] { display: none; }
.progress-context { font-size: 12px; }
.progress-dial { width: 40px; height: 40px; display: grid; place-items: center; position: relative; }
.reading-page .progress-dial svg { position: absolute; inset: 0; width: 40px; height: 40px; stroke-width: 2; transform: rotate(-90deg); }
.progress-track { stroke: var(--color-border); }
.progress-fill { stroke: var(--color-accent); stroke-dasharray: 100; stroke-dashoffset: var(--progress-offset, 100); }
.progress-number { font-size: 11px; font-variant-numeric: tabular-nums; color: var(--color-text); }
.progress-tooltip { position: absolute; top: calc(100% + 10px); right: 0; width: max-content; max-width: 240px; padding: 9px 12px; border-radius: 8px; background: var(--color-text); color: var(--color-surface); font-size: 12px; opacity: 0; visibility: hidden; pointer-events: none; }
.page-progress:is(:hover, :focus-visible) .progress-tooltip { opacity: 1; visibility: visible; }
.category-nav a[aria-current="location"] { color: var(--color-accent); text-decoration: underline; text-underline-offset: 6px; }
.experiment-link { display: flex; align-items: center; gap: 12px; padding: 16px 0; font-size: 14px; text-decoration: none; color: var(--color-accent) !important; }
.experiment-link > span { flex: 1; }
.experiment-link > span > span { display: block; margin-top: 3px; color: var(--reading-muted); font-size: 12px; }
.experiment-link:hover > span { text-decoration: underline; text-underline-offset: 4px; }
@media (max-width: 600px) {
  .reading-header-tools { gap: 14px; }
  .progress-context { display: none; }
}
.reading-page a { color: inherit; text-underline-offset: .24em; }
.reading-page svg { width: 20px; height: 20px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.reading-page :where(h1, h2, h3, p) { overflow-wrap: anywhere; }
.reading-page :where([id]) { scroll-margin-top: 108px; }
.reading-header { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 76px; padding: 12px max(32px, calc((100vw - 1376px) / 2)); background: var(--color-bg); border-bottom: 1px solid var(--color-border); }
.site-name { font-size: 16px; font-weight: 600; letter-spacing: .04em; text-decoration: none; }
.back-link { display: inline-flex; align-items: center; gap: 9px; min-height: 44px; color: var(--reading-muted) !important; font-size: 14px; text-decoration: none; }
.back-link:hover, .reading-page a:hover { color: var(--color-accent); }
.breadcrumbs { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; color: var(--reading-muted); font-size: 14px; }
.breadcrumbs a { text-decoration: none; }
.breadcrumbs a:hover { text-decoration: underline; }
.breadcrumbs > span[aria-hidden] { color: #758676; }
.directory-shell { max-width: 1224px; margin: 0 auto; padding: 38px 32px 88px; }
.directory-layout { display: grid; grid-template-columns: 270px minmax(0, 1fr); gap: 90px; margin-top: 55px; align-items: start; }
.directory-intro { position: sticky; top: 121px; }
.directory-intro h1 { margin: 0 0 18px; font-size: 64px; line-height: 1.1; font-weight: 600; letter-spacing: -.03em; }
.directory-lead { margin: 0; font-size: 24px; line-height: 1.65; letter-spacing: .01em; }
.directory-description { max-width: 230px; margin: 18px 0 30px; color: var(--reading-muted); font-size: 15px; line-height: 1.9; }
.category-nav { display: grid; gap: 2px; justify-items: start; }
.category-nav a { display: flex; align-items: center; min-height: 44px; padding: 4px 0; font-size: 15px; text-decoration: none; }
.category-nav a:hover { text-decoration: underline; }
.preview-note { margin: 28px 0 0; font-size: 13px; color: var(--reading-muted); line-height: 1.85; }
.topic-group { padding: 28px 0 22px; border-top: 1px solid var(--color-border); }
.topic-group:first-child { padding-top: 0; border: 0; }
.topic-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; margin-bottom: 12px; }
.topic-heading h2 { margin: 0; font-size: 22px; line-height: 1.5; font-weight: 600; }
.topic-heading p { margin: 0; color: var(--reading-muted); font-size: 13px; }
.article-list { list-style: none; margin: 0; padding: 0; }
.article-pending, .article-link { display: flex; justify-content: space-between; align-items: center; gap: 22px; padding: 18px 0; }
.article-list h3 { margin: 0; font-size: 17px; line-height: 1.6; font-weight: 500; }
.article-list p { margin: 5px 0 0; color: var(--reading-muted); font-size: 14px; line-height: 1.7; }
.pending-label { flex-shrink: 0; color: var(--reading-muted); font-size: 12px; }
.article-link { margin-inline: -18px; padding-inline: 18px; border-radius: 12px; background: #e8f0e4; text-decoration: none; transition: background-color 160ms ease; }
.article-link h3 { font-weight: 600; }
.article-link:hover { background: #dfebdb; }
.article-link svg { margin-right: 3px; }
.reading-footer { display: flex; align-items: center; justify-content: space-between; gap: 20px; max-width: 1160px; margin: 0 auto; padding: 26px 0 36px; border-top: 1px solid var(--color-border); color: var(--reading-muted); font-size: 13px; }
.reading-footer a { display: flex; align-items: center; min-height: 44px; text-decoration: none; }
.reading-layout { display: grid; grid-template-columns: 196px minmax(0, 1fr) 170px; grid-template-areas: "sidebar article toc"; gap: 46px; align-items: start; max-width: 1440px; margin: 0 auto; padding: 38px 32px 70px; }
.reading-sidebar { grid-area: sidebar; }
.reading-toc { grid-area: toc; }
.reading-sidebar, .reading-toc { position: sticky; top: 114px; max-height: calc(100svh - 138px); overflow-y: auto; scrollbar-width: thin; scrollbar-color: #b1c1b0 transparent; }
.navigation-disclosure summary { display: flex; justify-content: space-between; align-items: center; gap: 12px; min-height: 44px; list-style: none; cursor: pointer; font-size: 14px; font-weight: 600; }
.navigation-disclosure summary::-webkit-details-marker { display: none; }
.navigation-disclosure summary svg { width: 16px; height: 16px; transition: transform 160ms ease; }
.navigation-disclosure[open] summary svg { transform: rotate(180deg); }
.article-tree { display: grid; padding-top: 12px; gap: 6px; }
.article-tree a { display: flex; align-items: center; min-height: 44px; padding: 9px 12px; font-size: 14px; text-decoration: none; border-radius: 8px; }
.article-tree .tree-category { color: var(--reading-muted); }
.article-tree .tree-current { margin: -2px 0 6px 8px; padding: 10px 12px; background: #e4eddf; color: var(--color-text); line-height: 1.75; }
.article-tree .tree-return { margin-top: 24px; color: var(--reading-muted); font-size: 13px; text-decoration: underline; }
.toc-links { display: grid; gap: 4px; padding-top: 12px; }
.toc-links a { display: block; padding: 8px 0; font-size: 13px; line-height: 1.6; color: var(--reading-muted); text-decoration: none; }
.toc-links a[aria-current="location"] { font-weight: 600; color: var(--color-text); text-decoration: underline; text-decoration-color: #8da58b; text-decoration-thickness: 1px; }
.article-main { grid-area: article; min-width: 0; max-width: 880px; }
.article-heading { padding: 36px 0 34px; border-bottom: 1px solid var(--color-border); }
.article-heading h1 { margin: 0; font-size: clamp(34px, 3.2vw, 46px); line-height: 1.4; font-weight: 600; letter-spacing: -.025em; text-wrap: balance; }
.article-deck { margin: 22px 0 0; color: var(--reading-muted); font-size: 18px; line-height: 1.9; max-width: 680px; }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 23px; color: var(--reading-muted); font-size: 13px; }
.prose { font-size: 17px; line-height: 1.9; }
.prose section { margin-top: 48px; }
.prose h2 { margin: 0 0 20px; font-size: 25px; line-height: 1.5; font-weight: 600; letter-spacing: -.015em; }
.prose h3 { margin: 28px 0 12px; font-size: 19px; line-height: 1.65; font-weight: 600; }
.prose p { margin: 0 0 18px; }
.prose strong { font-weight: 600; }
.prose :not(pre) > code { padding: 2px 5px; border-radius: 4px; background: #e9eee5; font: .88em/1.6 ui-monospace, "SFMono-Regular", Consolas, monospace; overflow-wrap: anywhere; }
.reading-note { margin: 26px 0; padding: 22px 24px; background: #e9f0e5; border-radius: 12px; }
.reading-note strong { display: block; margin-bottom: 7px; font-size: 15px; }
.reading-note p { margin: 0; font-size: 16px; }
.code-block { margin: 24px 0; border: 1px solid #d3dfcf; border-radius: 12px; overflow: hidden; background: #edf2e8; }
.code-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 50px; padding: 4px 18px; border-bottom: 1px solid #d3dfcf; font-size: 13px; color: var(--reading-muted); }
.copy-code { min-height: 40px; padding: 6px 10px; border: 0; border-radius: 5px; background: transparent; cursor: pointer; font-size: 13px; }
.copy-code:hover { background: #dee8d8; }
.copy-code[hidden] { display: none; }
.code-block pre { margin: 0; padding: 22px; overflow-x: auto; scrollbar-width: thin; scrollbar-color: #a5b69e transparent; font: 13px/1.95 ui-monospace, "SFMono-Regular", Consolas, monospace; tab-size: 4; }
.code-block pre:focus-visible { outline-offset: -3px; }
.code-type { color: #285d66; }
.code-keyword { color: #794862; }
.code-string { color: #53672f; }
.copy-status { margin: 0 !important; padding: 0 18px; font-size: 13px; color: var(--reading-muted); }
.copy-status:not(:empty) { padding-bottom: 12px; }
.table-scroll { margin: 24px 0; overflow-x: auto; scrollbar-width: thin; scrollbar-color: #a5b69e transparent; }
.table-scroll table { width: 100%; min-width: 540px; border-collapse: collapse; text-align: left; font-size: 14px; line-height: 1.8; }
.table-scroll caption { text-align: left; margin-bottom: 12px; color: var(--reading-muted); font-size: 13px; }
.table-scroll th, .table-scroll td { padding: 15px 14px; border-bottom: 1px solid var(--color-border); vertical-align: top; }
.table-scroll th { background: #e9f0e5; font-weight: 600; }
.reflection-list { margin: 16px 0 22px; padding-left: 1.4em; }
.reflection-list li { margin: 10px 0; padding-left: 3px; }
.prose .references { padding-top: 32px; border-top: 1px solid var(--color-border); font-size: 14px; color: var(--reading-muted); }
.references h2 { font-size: 18px; }
.references ul { padding-left: 1.4em; }
.references li { margin: 8px 0; }
.article-end { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-top: 50px; padding-top: 28px; border-top: 1px solid var(--color-border); }
.article-end a { display: flex; align-items: center; gap: 14px; min-height: 52px; font-size: 14px; text-decoration: none; }
.article-end small { display: block; margin-bottom: 5px; color: var(--reading-muted); font-size: 13px; }
@media (min-width: 1101px) {
  .reading-toc { padding-top: 1px; }
}
@media (max-width: 1240px) {
  .reading-layout { grid-template-columns: 170px minmax(0, 1fr) 148px; gap: 28px; }
  .article-main { max-width: none; }
  .directory-layout { gap: 60px; grid-template-columns: 240px minmax(0, 1fr); }
  .reading-footer { margin-inline: 32px; }
}
@media (max-width: 1100px) {
  .reading-layout { grid-template-columns: 180px minmax(0, 1fr); grid-template-areas: "sidebar toc" "sidebar article"; row-gap: 18px; }
  .reading-toc { position: static; max-height: none; border-bottom: 1px solid var(--color-border); padding-bottom: 10px; }
  .reading-toc .toc-links { padding: 4px 0 12px; }
  .reading-toc .toc-links a { min-height: 44px; display: flex; align-items: center; }
  .topic-heading { display: block; }
  .topic-heading p { margin-top: 6px; }
}
@media (max-width: 820px) {
  .reading-header { min-height: 68px; padding-inline: 24px; }
  .reading-layout { grid-template-columns: minmax(0, 1fr); grid-template-areas: "sidebar" "toc" "article"; padding: 18px 24px 56px; gap: 10px; }
  .reading-sidebar { position: static; max-height: none; border-bottom: 1px solid var(--color-border); padding-bottom: 8px; }
  .reading-sidebar .article-tree { padding: 4px 0 12px; }
  .article-tree .tree-return { margin-top: 8px; }
  .article-main { margin-top: 20px; }
  .directory-shell { padding: 28px 24px 56px; }
  .directory-layout { grid-template-columns: minmax(0, 1fr); gap: 38px; margin-top: 36px; }
  .directory-intro { position: static; }
  .directory-intro h1 { font-size: 50px; margin-bottom: 14px; }
  .directory-lead { font-size: 22px; }
  .directory-lead br { display: none; }
  .directory-description { max-width: none; margin: 12px 0 18px; }
  .category-nav { display: flex; flex-wrap: wrap; gap: 8px 24px; }
  .preview-note { margin-top: 14px; }
  .preview-note br { display: none; }
  .topic-group { padding-block: 26px 18px; }
  .topic-heading { display: flex; }
  .topic-heading p { margin: 0; }
  .reading-footer { margin-inline: 24px; }
}
@media (max-width: 520px) {
  .reading-header { padding-inline: 20px; gap: 16px; }
  .site-name { font-size: 15px; }
  .back-link { font-size: 13px; gap: 7px; }
  .directory-shell { padding-inline: 20px; }
  .directory-layout { margin-top: 30px; }
  .directory-intro h1 { font-size: 46px; }
  .topic-heading { display: block; }
  .topic-heading h2 { font-size: 22px; }
  .topic-heading p { margin-top: 6px; }
  .article-link { margin-inline: -10px; padding-inline: 10px; }
  .article-list h3 { font-size: 16px; }
  .article-list p { font-size: 13px; }
  .article-pending, .article-link { gap: 14px; }
  .pending-label { font-size: 12px; }
  .reading-layout { padding-inline: 20px; }
  .article-heading { padding-top: 27px; padding-bottom: 28px; }
  .article-heading h1 { font-size: 32px; line-height: 1.5; }
  .title-break { display: none; }
  .article-deck { font-size: 16px; line-height: 1.85; margin-top: 17px; }
  .article-meta { font-size: 12px; gap: 8px; margin-top: 18px; }
  .prose { font-size: 16px; line-height: 1.9; }
  .prose section { margin-top: 36px; }
  .prose h2 { font-size: 22px; margin-bottom: 17px; }
  .prose h3 { font-size: 18px; }
  .reading-note { padding: 18px; }
  .reading-note p { font-size: 15px; }
  .code-block pre { padding: 18px; }
  .reading-footer { margin-inline: 20px; }
  .article-end { align-items: flex-start; gap: 16px; }
  .article-end a { gap: 8px; font-size: 13px; }
}
@media (prefers-reduced-motion: reduce) {
  .article-link, .navigation-disclosure summary svg { transition: none; }
}