:root {
  color-scheme: light;
  --paper: #faf9f6; --cover: #e8eef1; --ink: #24313e; --ink-soft: #596571;
  --muted: #5d6a76; --rule: #d9dee2; --accent: #2e65ad;
  /* Obsidian-compatible category colors for figures in published notes. */
  --color-blue: #2e65ad; --color-cyan: #348591; --color-green: #5e8450;
  --color-yellow: #a77b2a; --color-orange: #b5683e; --color-red: #ab5149;
  --color-pink: #a75d7d; --color-purple: #795f9b;
  --sidebar-width: 360px; --art-size: 264px; --content-pad: clamp(30px, 3.2vw, 60px);
  --serif: "Iowan Old Style", "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}
body[data-channel="essay"] { --cover: #eee8e3; --ink: #312e2c; --ink-soft: #675f59; --muted: #6f6660; --rule: #ded7d0; --accent: #8a604c; }
body[data-channel="hidden"] { --cover: #f0e5de; --ink: #392e2c; --ink-soft: #6b5852; --muted: #765e54; --rule: #dfd2c9; --accent: #984f41; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scrollbar-gutter: stable; }
body { margin: 0; min-width: 320px; background: var(--paper); color: var(--ink); font-family: var(--serif); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
img { max-width: 100%; }
button, input, select { font: inherit; }
button, select { cursor: pointer; }
[hidden] { display: none !important; }
::selection { background: color-mix(in srgb, var(--accent) 16%, var(--paper)); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: -80px; left: 16px; z-index: 100; background: var(--paper); padding: 12px 18px; font: 14px var(--sans); }
.skip-link:focus { top: 12px; }
.site-shell { display: grid; grid-template-columns: var(--sidebar-width) minmax(0,1fr); min-height: 100svh; }
.site-sidebar { position: sticky; top: 0; height: 100svh; min-height: 620px; display: flex; flex-direction: column; padding: 60px 48px 30px; border-right: 1px solid var(--rule); background-color: var(--cover); background-image: url('/img/paper-grain.svg'); background-blend-mode: soft-light; }
.site-brand { display: flex; align-items: center; gap: 14px; white-space: nowrap; }
.site-seal { flex: none; width: 40px; height: 40px; }
.site-brand-name { font: 600 23px/1.3 var(--serif); letter-spacing: .01em; }
.sidebar-identity { margin-top: clamp(82px, 13vh, 145px); }
.sidebar-title { margin: 0; font: 500 64px/1.3 var(--serif); letter-spacing: .01em; overflow-wrap: anywhere; }
.geometry { position: relative; width: var(--art-size); height: var(--art-size); margin: 58px auto 0; }
.geometry-canvas, .essay-art, .home-art { position: absolute; inset: 0; display: block; width: 100%; height: 100%; object-fit: contain; }
.geometry-canvas { opacity: 1; transition: opacity .35s; }
.essay-art, .home-art { opacity: 0; pointer-events: none; transition: opacity .35s; }
body[data-art="essay"] .geometry-canvas, body[data-art="home"] .geometry-canvas { opacity: 0; pointer-events: none; }
body[data-art="essay"] .essay-art { opacity: 1; }
body[data-art="home"] .home-art { opacity: 1; }
.sidebar-copyright { margin-top: auto; padding-top: 40px; color: var(--muted); font: 12px/1.5 var(--sans); }
.site-main { min-width: 0; min-height: 100svh; padding: 56px var(--content-pad) 30px; display: flex; flex-direction: column; }
.site-main > main { min-width: 0; flex: 1; }
.site-header { display: flex; align-items: center; margin-bottom: 38px; }
.site-nav { display: flex; gap: 30px; font: 20px/1.5 var(--serif); }
.site-nav a { padding-bottom: 12px; border-bottom: 2px solid transparent; color: var(--ink-soft); }
.site-nav a[aria-current] { border-color: var(--accent); color: var(--accent); }
.site-footer { display: none; padding-top: 36px; color: var(--muted); font: 12px/1.5 var(--sans); }
.section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; padding-bottom: 24px; border-bottom: 1px solid var(--rule); }
.section-heading h2 { margin: 0; font-size: 28px; font-weight: 500; }
.section-heading > a { font: 14px var(--sans); color: var(--accent); }
.page-home .sidebar-title { max-width: 230px; font-size: 64px; line-height: 1.25; }
.page-home .geometry { margin-top: 26px; }
.home-art { transform: scale(1.18); }
.entry-meta { display: flex; align-items: baseline; gap: 22px; color: var(--muted); font: 13px/1.6 var(--sans); }
.entry-meta > span { color: var(--accent); }
/* Homepage: a publication index with one clear headline. */
.page-home .site-header { justify-content: space-between; gap: 24px; margin-bottom: 0; }
.page-home .site-nav { gap: 30px; font: 15px/1.5 var(--sans); }
.page-home .site-nav a { padding-bottom: 11px; }
.rss-subscribe { display: inline-flex; flex: none; align-items: center; gap: 9px; min-height: 36px; padding: 7px 15px; border: 1px solid #cbd4d9; border-radius: 0; color: var(--ink-soft); font: 12px/1.5 var(--sans); transition: border-color .2s, background-color .2s; }
.rss-subscribe svg { width: 16px; height: 16px; color: #995d46; stroke-width: 1.65; }
.rss-subscribe:hover { color: var(--ink); border-color: #aebdc6; background: #f0f3f3; }
.home-spotlight { display: grid; grid-template-columns: 118px minmax(0,1fr); gap: 42px; min-height: 176px; margin: 88px 0 62px; }
.home-dateline { padding: 7px 24px 0 0; border-right: 1px solid var(--rule); color: var(--muted); font: 12px/1.6 var(--sans); }
.home-dateline time { display: grid; margin-top: 18px; font: 13px/1.7 var(--sans); font-variant-numeric: tabular-nums; }
.home-dateline::after { display: block; content: ''; width: 34px; margin-top: 22px; border-bottom: 2px solid var(--accent); }
.home-lead { min-width: 0; }
.home-lead h2 { margin: 0 0 22px; font: 500 34px/1.4 var(--serif); overflow-wrap: anywhere; }
.home-lead p { max-width: 40em; margin: 0; color: var(--ink-soft); font: 15px/1.8 var(--sans); overflow-wrap: anywhere; }
.home-read-more { display: inline-flex; align-items: center; gap: 7px; margin-top: 28px; color: var(--accent); font: 13px/1.5 var(--sans); }
.home-read-more svg, .home-index-footer svg { width: 16px; height: 16px; stroke-width: 1.5; }
.home-read-more:hover, .home-index-footer a:hover { text-decoration: underline; text-underline-offset: 5px; }
.home-no-posts { margin: 0; align-self: center; color: var(--ink-soft); font: 15px/1.8 var(--sans); }
.home-index { border-top: 1px solid var(--rule); }
.home-channel { --channel-ink: #8e513e; display: grid; grid-template-columns: 60px 160px minmax(0,1fr) 20px; align-items: center; min-height: 116px; padding: 22px 12px 22px 0; border-bottom: 1px solid var(--rule); }
.home-channel[data-home-channel="tech"] { --channel-ink: #2e65ad; }
.home-channel-number { display: flex; align-items: center; height: 50px; border-right: 1px solid var(--rule); color: var(--muted); font: 11px/1.5 var(--sans); font-variant-numeric: tabular-nums; }
.home-channel h2 { margin: 0; padding-left: 36px; color: var(--channel-ink); font: 500 24px/1.4 var(--sans); }
.home-channel-description { color: var(--ink-soft); font: 13px/1.6 var(--sans); }
.home-channel > svg { width: 20px; height: 20px; color: var(--channel-ink); stroke-width: 1.4; transition: transform .2s; }
.home-channel:hover h2 { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 7px; }
.home-channel:hover > svg { transform: translateX(3px); }
.home-index-footer { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding-top: 20px; color: var(--muted); font: 12px/1.6 var(--sans); }
.home-index-footer a { display: inline-flex; align-items: center; gap: 6px; color: var(--accent); }
.archive-tools { display: flex; gap: 16px; align-items: center; }
.search-box { flex: 1; min-width: 0; }
input[type="search"], select { width: 100%; min-height: 46px; background: transparent; color: var(--ink); border: 1px solid var(--rule); border-radius: 5px; padding: 10px 15px; font: 14px/1.5 var(--sans); }
input[type="search"]::placeholder { color: var(--muted); }
.sort-control { width: 148px; flex: none; }
.archive-navigation { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 32px 0 0; border-bottom: 1px solid var(--rule); }
.archive-channels { display: flex; gap: 30px; font: 17px/1.5 var(--sans); }
.archive-channels > a { padding: 12px 0 17px; border-bottom: 2px solid transparent; color: var(--ink-soft); }
.archive-channels > a[aria-current] { color: var(--accent); border-color: var(--accent); }
.topic-control { width: 148px; margin-bottom: 10px; }
.archive-caption { display: flex; justify-content: space-between; gap: 16px; padding: 24px 0 18px; color: var(--muted); font: 13px/1.6 var(--sans); }
.entry-list { padding: 0; margin: 0; list-style: none; border-top: 1px solid var(--rule); }
.entry { border-bottom: 1px solid var(--rule); position: relative; }
.entry-link { display: grid; grid-template-columns: 104px minmax(0,1fr) 64px; align-items: baseline; gap: 24px; padding: 28px 0; }
.entry-link:hover h2 { color: var(--accent); }
.entry-date { color: var(--muted); font: 13px/1.5 var(--sans); font-variant-numeric: tabular-nums; }
.entry-body { min-width: 0; }
.entry-body h2 { margin: 0; font: 500 25px/1.45 var(--serif); overflow-wrap: anywhere; }
.entry-body p { margin: 8px 0 0; color: var(--ink-soft); font: 15px/1.65 var(--sans); overflow-wrap: anywhere; }
.entry-category { color: var(--muted); font: 13px/1.5 var(--sans); text-align: right; }
body[data-channel="essay"] .entry-link { grid-template-columns: 104px minmax(0,1fr); padding-block: 32px; }
body[data-channel="essay"] .entry-category { display: none; }
body[data-channel="tech"] .entry-link { grid-template-columns: minmax(0,1fr) 90px 88px; gap: 20px; padding-block: 23px; }
body[data-channel="tech"] .entry-body { grid-column: 1; grid-row: 1; }
body[data-channel="tech"] .entry-body h2 { font-size: 25px; }
body[data-channel="tech"] .entry-body p { font-size: 15px; margin-top: 5px; }
body[data-channel="tech"] .entry-category { grid-column: 2; grid-row: 1; text-align: left; }
body[data-channel="tech"] .entry-date { grid-column: 3; grid-row: 1; text-align: right; font-size: 12px; }
body[data-channel="hidden"] .entry-link { grid-template-columns: 104px minmax(0,1fr); }
body[data-channel="hidden"] .entry-body { border-left: 2px solid var(--accent); padding-left: 20px; }
.archive-empty, .search-empty { margin: 0; border-block: 1px solid var(--rule); padding: 48px 0; color: var(--ink-soft); font: 16px/1.8 var(--sans); }
.text-button { background: transparent; border: 0; padding: 8px 12px; color: var(--accent); font: 14px var(--sans); text-decoration: underline; text-underline-offset: .2em; }
/* Reading chrome stays outside the document's shared Obsidian typography. */
.nw-site-article .site-header { display: none; }
.reader-toolbar { margin-bottom: 38px; font: 15px/1.6 var(--sans); }
.reader-toolbar a { color: var(--accent); }
.reader-layout { display: grid; grid-template-columns: minmax(0,740px); gap: 36px; align-items: start; }
.reader-layout.has-toc { grid-template-columns: minmax(0,740px) minmax(150px,190px); }
.article-main { min-width: 0; max-width: 740px; }
body.notes-workbench.nw-site-article .nw-document { width: 100%; max-width: var(--nw-width,740px); margin: 0; padding: 0; overflow-wrap: anywhere; font-family: var(--nw-serif); font-size: var(--nw-font-size,17px); line-height: var(--nw-line-height,1.75); }
body.nw-site-article .nw-document h1.nw-article-title { margin: 0 0 .45em; font-size: clamp(2rem, 3vw, 2.4rem); overflow-wrap: anywhere; }
.article-metadata { display: flex; flex-wrap: wrap; gap: 8px 16px; color: var(--muted); font: 13px/1.5 var(--sans); margin: 0 0 32px; }
.article-metadata > :empty { display: none; }
.reader-toc { position: sticky; top: 42px; min-width: 0; color: var(--ink-soft); font: 13px/1.7 var(--sans); }
.reader-toc details { border-left: 1px solid var(--rule); padding-left: 20px; }
.reader-toc summary { list-style: none; font: 500 17px var(--serif); color: var(--ink); margin-bottom: 20px; cursor: pointer; }
.reader-toc summary::-webkit-details-marker { display: none; }
.reader-toc nav { display: grid; gap: 12px; max-height: calc(100svh - 240px); overflow-y: auto; margin-left: -22px; padding-left: 22px; }
.reader-toc a { display: block; position: relative; overflow-wrap: anywhere; }
.reader-toc a[data-level="3"] { padding-left: 14px; font-size: 12px; }
.reader-toc a[data-level="2"] { padding-left: 10px; }
.reader-toc a[aria-current] { color: var(--accent); }
.reader-toc a[aria-current]::before { position: absolute; left: -21px; top: .2em; height: 1.4em; border-left: 2px solid var(--accent); content: ''; }
.reader-toc .toc-top { display: block; margin-top: 28px; padding: 18px 0 0; border: 0; border-top: 1px solid var(--rule); background: none; color: var(--muted); font: inherit; text-align: left; }
.reading-progress { position: fixed; top: 0; left: var(--sidebar-width); right: 0; height: 2px; z-index: 25; background: transparent; pointer-events: none; }
.reading-progress > span { display: block; height: 100%; width: 100%; background: var(--accent); transform: scaleX(0); transform-origin: left; }
.article-footer { display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--rule); margin-top: 46px; padding-top: 24px; font: 14px/1.6 var(--sans); color: var(--accent); }
body.notes-workbench.nw-site-article .nw-document :is(h2,h3,h4) { scroll-margin-top: 36px; }
body.notes-workbench.nw-site-article .nw-document pre { position: relative; padding-top: 2.4em; }
.code-copy { position: absolute; top: 8px; right: 10px; padding: 4px 8px; border: 0; background: transparent; color: var(--ink-soft); font: 12px/1.4 var(--sans); }
.reader-announcement { margin: 0; }
/* Reuse the supplied hidden-category illustration in the same art slot. */
.geometry .margin-bombs { width: 100%; height: 100%; object-fit: contain; overflow: visible; }
.margin-bombs [data-expression] { display: none; }
.margin-bombs[data-mood="neutral"] [data-expression="neutral"], .margin-bombs[data-mood="thinking"] [data-expression="thinking"], .margin-bombs[data-mood="bold"] [data-expression="bold"], .margin-bombs[data-mood="wink"] [data-expression="wink"], .margin-bombs[data-mood="blink"] [data-expression="blink"] { display: inline; }
.page-heading h1 { font-size: 36px; font-weight: 500; }
.not-found h1 { font-size: 36px; }
@media (max-width: 1250px) {
  :root { --sidebar-width: 280px; --art-size: 210px; --content-pad: 32px; }
  .site-sidebar { padding-inline: 30px; }
  .site-brand-name { font-size: 19px; }
  .reader-layout.has-toc { grid-template-columns: minmax(0,1fr); }
  .reader-toc { position: sticky; top: 0; grid-row: 1; z-index: 20; background: var(--paper); padding-block: 12px; border-bottom: 1px solid var(--rule); }
  .reader-toc details { border-left: 0; padding: 0; }
  .reader-toc summary { list-style: disclosure-closed; margin: 0; font: 14px/1.5 var(--sans); }
  .reader-toc details[open] summary { list-style: disclosure-open; }
  .reader-toc nav { max-height: 35svh; margin: 18px 0 0; padding-left: 18px; }
  .reader-toc .toc-top { display: none; }
  .reader-layout { gap: 24px; }
  body.notes-workbench.nw-site-article .nw-document :is(h2,h3,h4) { scroll-margin-top: 68px; }
}
@media (max-width: 900px) {
  :root { --sidebar-width: 224px; --art-size: 176px; --content-pad: 26px; }
  .site-sidebar { padding: 40px 24px 24px; }
  .site-brand { gap: 10px; }
  .site-brand-name { font-size: 16px; }
  .site-seal { width: 30px; height: 30px; }
  .sidebar-title { font-size: 42px; }
  .page-home .sidebar-title { font-size: 50px; }
  .entry-link, body[data-channel="essay"] .entry-link { grid-template-columns: 78px minmax(0,1fr); gap: 16px; }
  .entry-category { display: none; }
  .entry-date { font-size: 11px; }
  body[data-channel="tech"] .entry-link { grid-template-columns: minmax(0,1fr) 76px; }
  body[data-channel="tech"] .entry-date { grid-column: 2; font-size: 11px; }
  .entry-body h2 { font-size: 22px; }
  .site-main { padding-top: 42px; }
  .home-spotlight { grid-template-columns: 76px minmax(0,1fr); gap: 24px; margin-top: 64px; margin-bottom: 44px; }
  .home-dateline { padding-right: 14px; }
  .home-lead h2 { font-size: 30px; }
  .home-channel { grid-template-columns: 38px 114px minmax(0,1fr) 18px; min-height: 100px; }
  .home-channel h2 { padding-left: 22px; font-size: 22px; }
}
@media (max-width: 640px) {
  :root { --sidebar-width: 0px; --content-pad: 22px; --art-size: 88px; }
  .site-shell { display: block; }
  .site-sidebar { position: relative; height: auto; min-height: 0; padding: 24px 22px 22px; border-right: 0; border-bottom: 1px solid var(--rule); }
  .sidebar-identity { display: flex; justify-content: space-between; align-items: center; margin-top: 26px; min-height: 88px; }
  .sidebar-title { font-size: 38px; }
  .page-home .sidebar-title { max-width: 3.6em; font-size: 42px; }
  .geometry, .page-home .geometry { margin: 0; flex: none; }
  .sidebar-copyright { display: none; }
  .site-main { padding-top: 24px; min-height: 60svh; }
  .site-header { margin-bottom: 26px; }
  .site-nav { font-size: 18px; }
  .site-footer { display: block; }
  .archive-tools { gap: 10px; }
  .sort-control { width: 115px; }
  input[type="search"], select { padding-inline: 10px; font-size: 14px; }
  input[type="search"] { font-size: 16px; }
  .archive-navigation { gap: 12px; padding-top: 20px; flex-wrap: wrap; }
  .archive-channels { gap: 26px; font-size: 15px; }
  .topic-control { width: 124px; }
  .entry-link, body[data-channel="essay"] .entry-link, body[data-channel="tech"] .entry-link, body[data-channel="hidden"] .entry-link { display: flex; flex-wrap: wrap; gap: 8px; padding: 22px 0; }
  .entry-date, body[data-channel="tech"] .entry-date { order: 0; font-size: 12px; text-align: left; }
  .entry-body, body[data-channel="tech"] .entry-body { order: 2; flex: 0 0 100%; }
  body[data-channel="tech"] .entry-category { display: block; order: 1; margin-left: auto; font-size: 12px; }
  .entry-body h2, body[data-channel="tech"] .entry-body h2 { font-size: 25px; }
  .entry-body p { font-size: 14px; }
  .section-heading h2 { font-size: 25px; }
  .page-home .site-header { gap: 16px; }
  .page-home .site-nav { gap: 26px; }
  .rss-subscribe { gap: 7px; padding-inline: 12px; }
  .home-spotlight { grid-template-columns: minmax(0,1fr); gap: 20px; min-height: 0; margin: 38px 0 38px; }
  .home-dateline { display: flex; align-items: baseline; gap: 16px; padding: 0; border: 0; font-size: 11px; }
  .home-dateline time { display: flex; gap: 5px; margin: 0; font-size: 12px; }
  .home-dateline::after { display: none; }
  .home-lead h2 { margin-bottom: 16px; font-size: 28px; }
  .home-lead p { font-size: 14px; }
  .home-read-more { margin-top: 22px; }
  .home-channel { grid-template-columns: 30px 104px minmax(0,1fr) 18px; min-height: 92px; padding: 20px 0; }
  .home-channel-number { font-size: 10px; }
  .home-channel h2 { padding-left: 20px; font-size: 22px; }
  .home-channel-description { font-size: 12px; }
  .home-index-footer { font-size: 11px; }
  .reader-toolbar { margin-bottom: 28px; font-size: 14px; }
  .nw-site-article .sidebar-identity { margin-top: 12px; min-height: 48px; }
  .nw-site-article .sidebar-title { font-size: 25px; }
  .nw-site-article .geometry { width: 56px; height: 56px; }
  .nw-site-article .site-sidebar { padding-bottom: 16px; }
  .reader-layout.has-toc { gap: 28px; }
  .reading-progress { left: 0; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; } }
@media print {
  .site-shell, .reader-layout.has-toc { display: block; }
  .site-sidebar, .site-header, .site-footer, .reader-toc, .reader-toolbar, .reading-progress, .code-copy, .article-footer { display: none !important; }
  .site-main { padding: 0; min-height: 0; }
  body { background: white; }
}