:root {
  --bg: #0b0d12;
  --panel: #11151d;
  --panel-2: #171c25;
  --line: #293140;
  --line-soft: #1d2430;
  --text: #f4f6f8;
  --muted: #99a5b5;
  --teal: #42d6c4;
  --amber: #f2bd58;
  --coral: #ff786a;
  --sidebar-width: 264px;
  --toc-width: 220px;
  --article-width: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }

.docs-topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  height: 66px;
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(280px, 620px) 1fr;
  align-items: center;
  gap: 26px;
  padding: 0 26px;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 13, 18, 0.94);
  backdrop-filter: blur(18px);
}
.docs-brand-row, .docs-brand { display: flex; align-items: center; }
.docs-brand { gap: 11px; }
.docs-brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: #07100f;
  background: var(--teal);
  font-size: 18px;
  font-weight: 900;
}
.docs-brand > span:last-child { display: grid; line-height: 1.2; }
.docs-brand strong { font-size: 14px; }
.docs-brand small { color: var(--muted); font-size: 11px; margin-top: 2px; }
.docs-search {
  height: 40px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel);
}
.docs-search:focus-within { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(66, 214, 196, 0.12); }
.docs-search > span { color: var(--muted); font-size: 22px; line-height: 1; }
.docs-search input { flex: 1; min-width: 0; border: 0; outline: 0; color: var(--text); background: transparent; }
.docs-search input::placeholder { color: #778396; }
kbd {
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-bottom-color: #3a4557;
  border-radius: 4px;
  color: var(--muted);
  background: var(--panel-2);
  font: 11px/1.4 inherit;
}
.home-link { justify-self: end; color: var(--muted); font-weight: 650; font-size: 13px; }
.home-link:hover { color: var(--amber); }
.icon-button { border: 0; color: var(--text); background: transparent; cursor: pointer; }
.mobile-nav-button { display: none; width: 36px; height: 36px; margin-right: 8px; }

.docs-shell {
  min-height: calc(100vh - 66px);
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, var(--article-width)) var(--toc-width);
  justify-content: center;
}
.docs-sidebar {
  position: sticky;
  top: 66px;
  align-self: start;
  height: calc(100vh - 66px);
  overflow-y: auto;
  padding: 28px 22px 56px 26px;
  border-right: 1px solid var(--line-soft);
  background: #0e1117;
  scrollbar-width: thin;
  scrollbar-color: #374257 transparent;
}
.sidebar-intro { padding: 0 8px 22px; border-bottom: 1px solid var(--line-soft); }
.sidebar-intro span, .content-eyebrow {
  color: var(--teal);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
}
.sidebar-intro p { margin: 7px 0 0; color: var(--muted); font-size: 12px; line-height: 1.65; }
.docs-nav { padding-top: 18px; }
.nav-group + .nav-group { margin-top: 24px; }
.nav-group-title { display: flex; align-items: center; justify-content: space-between; padding: 0 8px 7px; font-weight: 750; }
.nav-group-title small { color: var(--muted); font-weight: 600; }
.nav-group-title > a {
  min-height: 0;
  display: inline;
  margin: 0;
  padding: 0;
  color: #edf4f5;
  background: transparent;
}
.nav-group-title > a::before { display: none; }
.nav-group-title > a:hover { color: var(--teal); background: transparent; transform: none; }
.nav-group-content { overflow: hidden; }
.nav-group-content > p { margin: -2px 8px 8px; color: #788497; font-size: 11px; line-height: 1.5; }
.nav-group-actions { display: inline-flex; align-items: center; gap: 6px; }
.nav-group-toggle {
  width: 24px;
  height: 24px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.025);
  cursor: pointer;
}
.nav-group-toggle i {
  width: 7px;
  height: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  transition: transform 0.2s ease;
}
.nav-group-toggle:hover { border-color: var(--teal); color: var(--teal); }
.nav-group.is-collapsed .nav-group-toggle i { transform: translateX(-2px) rotate(-45deg); }
.nav-group a {
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 7px 9px;
  border-left: 2px solid transparent;
  color: #aeb8c6;
  font-size: 13px;
  line-height: 1.45;
}
.nav-group a:hover { color: var(--text); background: #151a23; }
.nav-group a.active { color: var(--text); border-left-color: var(--teal); background: #182029; }
.nav-group a b { flex: 0 0 auto; color: var(--amber); font-size: 10px; }
.sidebar-empty { padding: 14px 8px; color: var(--muted); font-size: 13px; }
.docs-scrim { display: none; }

.docs-main { min-width: 0; padding: 60px clamp(28px, 3vw, 54px) 96px; }
.article-header { position: relative; overflow: hidden; padding: 30px 32px; border: 1px solid var(--line); border-radius: 12px; background: rgba(17, 21, 29, 0.78); }
.article-header-content { position: relative; z-index: 2; }
.article-header.has-cover .article-header-content { min-height: 350px; display: flex; flex-direction: column; justify-content: flex-end; }
.article-breadcrumb { display: flex; gap: 8px; color: var(--muted); font-size: 12px; }
.article-breadcrumb a:hover { color: var(--teal); }
.article-header h1, .search-results h1 {
  margin: 16px 0 12px;
  max-width: 760px;
  font-size: clamp(30px, 4.2vw, 48px);
  line-height: 1.16;
  letter-spacing: 0;
}
.article-summary { max-width: 720px; margin: 0; color: #bbc4d0; font-size: 17px; line-height: 1.75; }
.article-meta { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 18px; color: #7f8a9a; font-size: 12px; }
.article-meta span + span::before { content: "·"; margin-right: 20px; }
.article-cover { position: absolute; top: 0; bottom: 0; left: 50%; z-index: 0; width: 100%; max-width: 100%; margin: 0; transform: translateX(-50%); }
.article-cover img { display: block; width: 100%; height: 100%; max-height: none; object-fit: cover; }
.article-cover > span { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(7, 9, 13, 0.2), rgba(7, 9, 13, 0.9) 88%), linear-gradient(90deg, rgba(8, 10, 14, 0.34), transparent 52%); }
.article-cover[data-cover-width="50"] { width: 50%; }
.article-cover[data-cover-width="55"] { width: 55%; }
.article-cover[data-cover-width="60"] { width: 60%; }
.article-cover[data-cover-width="65"] { width: 65%; }
.article-cover[data-cover-width="70"] { width: 70%; }
.article-cover[data-cover-width="75"] { width: 75%; }
.article-cover[data-cover-width="80"] { width: 80%; }
.article-cover[data-cover-width="85"] { width: 85%; }
.article-cover[data-cover-width="90"] { width: 90%; }
.article-cover[data-cover-width="95"] { width: 95%; }
.article-cover[data-cover-width="100"] { width: 100%; }
.article-cover[data-cover-fit="contain"] { background: rgba(8, 10, 15, 0.78); }
.article-cover[data-cover-fit="contain"] img { object-fit: contain; }

.knowledge-rendered { margin-top: 18px; padding: 28px 32px 38px; border: 1px solid var(--line-soft); border-radius: 12px; color: #dce2e9; background: rgba(14, 18, 24, 0.76); font-size: 16px; box-shadow: 0 24px 70px rgba(0, 0, 0, 0.2); backdrop-filter: blur(22px); }
.knowledge-rendered > *:first-child { margin-top: 0; }
.knowledge-rendered h1, .knowledge-rendered h2, .knowledge-rendered h3, .knowledge-rendered h4 { color: #f7f9fb; line-height: 1.32; letter-spacing: 0; }
.knowledge-rendered h1 { margin: 46px 0 18px; font-size: 32px; }
.knowledge-rendered h2 { margin: 46px 0 16px; padding-bottom: 10px; border-bottom: 1px solid var(--line); font-size: 25px; }
.knowledge-rendered h3 { margin: 34px 0 13px; font-size: 20px; }
.knowledge-rendered h4 { margin: 28px 0 10px; font-size: 17px; color: var(--amber); }
.knowledge-rendered p { margin: 14px 0; }
.knowledge-rendered a { color: var(--teal); text-decoration: underline; text-underline-offset: 3px; }
.knowledge-rendered strong { color: #fff; }
.knowledge-rendered [data-text-color="teal"] { color: #43e2d1; }
.knowledge-rendered [data-text-color="coral"] { color: #ff7168; }
.knowledge-rendered [data-text-color="amber"] { color: #f6c453; }
.knowledge-rendered [data-text-color="blue"] { color: #67a8ff; }
.knowledge-rendered [data-text-color="violet"] { color: #b58cff; }
.knowledge-rendered [data-text-color="pink"] { color: #ff83c6; }
.knowledge-rendered [data-text-color="green"] { color: #76d98b; }
.knowledge-rendered [data-text-color="muted"] { color: #9ca9bb; }
.knowledge-rendered aside[data-highlight] {
  --highlight-color: #9ca9bb;
  margin: 22px 0;
  padding: 16px 18px;
  border: 1px solid color-mix(in srgb, var(--highlight-color) 28%, transparent);
  border-left: 3px solid var(--highlight-color);
  border-radius: 6px;
  color: #e7ecf3;
  background: color-mix(in srgb, var(--highlight-color) 9%, #0d131e);
}
.knowledge-rendered aside[data-highlight="teal"] { --highlight-color: #43e2d1; }
.knowledge-rendered aside[data-highlight="blue"] { --highlight-color: #67a8ff; }
.knowledge-rendered aside[data-highlight="amber"] { --highlight-color: #f6c453; }
.knowledge-rendered aside[data-highlight="coral"] { --highlight-color: #ff7168; }
.knowledge-rendered aside[data-highlight="violet"] { --highlight-color: #b58cff; }
.knowledge-rendered aside[data-highlight="green"] { --highlight-color: #76d98b; }
.knowledge-rendered aside[data-highlight="neutral"] { --highlight-color: #9ca9bb; }
.knowledge-rendered aside[data-highlight] > :first-child { margin-top: 0; }
.knowledge-rendered aside[data-highlight] > :last-child { margin-bottom: 0; }
.knowledge-rendered ul, .knowledge-rendered ol { margin: 14px 0; padding-left: 26px; }
.knowledge-rendered li { margin: 6px 0; }
.knowledge-rendered blockquote { margin: 20px 0; padding: 13px 18px; border-left: 3px solid var(--amber); color: #c4ccd6; background: #151820; }
.knowledge-rendered code { padding: 2px 5px; border-radius: 4px; color: #ffd38a; background: #1d2028; font-family: Consolas, "SFMono-Regular", monospace; font-size: 0.9em; }
.knowledge-rendered pre { position: relative; overflow-x: auto; margin: 22px 0; padding: 20px; border: 1px solid #303746; border-radius: 7px; background: #080a0f; }
.knowledge-rendered pre code { padding: 0; color: #d6deeb; background: transparent; }
.copy-code-button { position: absolute; top: 8px; right: 8px; padding: 4px 9px; border: 1px solid var(--line); border-radius: 5px; color: var(--muted); background: #171b23; cursor: pointer; font-size: 11px; }
.copy-code-button:hover { color: var(--text); border-color: var(--teal); }
.knowledge-rendered img { max-width: 100%; height: auto; display: block; margin: 26px auto; border: 1px solid var(--line); border-radius: 7px; cursor: zoom-in; transition: border-color 0.18s ease, filter 0.18s ease; }
.knowledge-rendered img:hover { border-color: var(--teal); filter: brightness(1.05); }
.knowledge-rendered img[data-width="20"] { width: 20%; }
.knowledge-rendered img[data-width="25"] { width: 25%; }
.knowledge-rendered img[data-width="30"] { width: 30%; }
.knowledge-rendered img[data-width="35"] { width: 35%; }
.knowledge-rendered img[data-width="40"] { width: 40%; }
.knowledge-rendered img[data-width="45"] { width: 45%; }
.knowledge-rendered img[data-width="50"] { width: 50%; }
.knowledge-rendered img[data-width="55"] { width: 55%; }
.knowledge-rendered img[data-width="60"] { width: 60%; }
.knowledge-rendered img[data-width="65"] { width: 65%; }
.knowledge-rendered img[data-width="70"] { width: 70%; }
.knowledge-rendered img[data-width="75"] { width: 75%; }
.knowledge-rendered img[data-width="80"] { width: 80%; }
.knowledge-rendered img[data-width="85"] { width: 85%; }
.knowledge-rendered img[data-width="90"] { width: 90%; }
.knowledge-rendered img[data-width="95"] { width: 95%; }
.knowledge-rendered img[data-width="100"] { width: 100%; }
.knowledge-rendered img[data-align="left"] { margin-left: 0; margin-right: auto; }
.knowledge-rendered img[data-align="center"] { margin-left: auto; margin-right: auto; }
.knowledge-rendered img[data-align="right"] { margin-left: auto; margin-right: 0; }
.knowledge-rendered table { display: block; width: 100%; overflow-x: auto; margin: 22px 0; border-collapse: collapse; font-size: 14px; }
.knowledge-rendered th, .knowledge-rendered td { padding: 10px 12px; border: 1px solid var(--line); text-align: left; }
.knowledge-rendered th { color: #fff; background: var(--panel-2); }
.knowledge-rendered hr {
  height: 1px;
  margin: 32px 0;
  border: 0;
  background: rgba(137, 154, 179, 0.48);
}

.knowledge-rendered li::marker { color: var(--teal); font-weight: 800; }

body.knowledge-lightbox-open { overflow: hidden; }
.knowledge-lightbox[hidden] { display: none; }
.knowledge-lightbox {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  padding: 18px 22px 20px;
  color: var(--text);
  background: rgba(3, 5, 9, 0.94);
  backdrop-filter: blur(18px);
}
.knowledge-lightbox-toolbar {
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.knowledge-lightbox-toolbar > span { overflow: hidden; color: var(--muted); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.knowledge-lightbox-toolbar > div { display: flex; align-items: center; gap: 7px; }
.knowledge-lightbox-toolbar button {
  width: 36px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--text);
  background: rgba(18, 24, 34, 0.9);
  cursor: pointer;
  font-weight: 850;
}
.knowledge-lightbox-toolbar button:hover,
.knowledge-lightbox-toolbar button:focus-visible { border-color: var(--teal); color: var(--teal); outline: 0; }
.knowledge-lightbox-stage { min-height: 0; display: grid; place-items: center; overflow: hidden; cursor: zoom-out; touch-action: none; }
.knowledge-lightbox-stage.is-draggable { cursor: grab; }
.knowledge-lightbox-stage.is-dragging { cursor: grabbing; }
.knowledge-lightbox-stage img { display: block; max-width: min(94vw, 1500px); max-height: calc(100vh - 128px); object-fit: contain; user-select: none; will-change: transform; }
.knowledge-lightbox-caption { min-height: 22px; margin: 8px auto 0; color: #c5ceda; font-size: 13px; text-align: center; }

.article-neighbors { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 64px; padding-top: 24px; border-top: 1px solid var(--line); }
.article-neighbors a { min-width: 0; padding: 14px; border: 1px solid var(--line); border-radius: 7px; background: var(--panel); }
.article-neighbors a:hover { border-color: var(--teal); }
.article-neighbors small { display: block; color: var(--muted); font-size: 11px; }
.article-neighbors span { display: block; margin-top: 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.article-neighbors .next { text-align: right; }

.docs-toc { position: sticky; top: 66px; align-self: start; max-height: calc(100vh - 66px); overflow-y: auto; padding: 58px 24px 40px; }
.toc-title { margin-bottom: 12px; color: var(--text); font-size: 12px; font-weight: 750; }
.toc-content ul { margin: 0; padding: 0; list-style: none; }
.toc-content ul ul { padding-left: 10px; }
.toc-content a { display: block; padding: 5px 0 5px 10px; border-left: 1px solid var(--line); color: #7f8b9b; font-size: 12px; line-height: 1.45; }
.toc-content a:hover, .toc-content a.active { color: var(--teal); border-left-color: var(--teal); }
.toc-top { display: inline-block; margin-top: 22px; color: #778396; font-size: 11px; }

.search-results h1 { margin-top: 10px; }
.search-count { color: var(--muted); }
.result-list { margin-top: 30px; border-top: 1px solid var(--line); }
.result-item { display: flex; align-items: center; justify-content: space-between; gap: 22px; padding: 24px 4px; border-bottom: 1px solid var(--line); }
.result-item:hover h2 { color: var(--teal); }
.result-item > div > span { color: var(--amber); font-size: 11px; }
.result-item h2 { margin: 5px 0; font-size: 20px; letter-spacing: 0; }
.result-item p { margin: 0; color: var(--muted); }
.result-item > strong { color: var(--teal); font-size: 22px; }
.docs-empty-state { padding: 38px 28px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); text-align: center; }
.docs-empty-state strong { display: block; font-size: 19px; }
.docs-empty-state p { color: var(--muted); }
.docs-empty-state a { display: inline-block; margin-top: 10px; color: var(--teal); font-weight: 700; }
.page-empty { max-width: 580px; margin: 14vh auto 0; }
.empty-code { display: block; color: var(--amber); font-size: 48px; font-weight: 900; }

.knowledge-home-page .docs-shell {
  grid-template-columns: var(--sidebar-width) minmax(0, 1180px);
}

.nav-type-heading {
  margin: 20px 8px 8px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
}

.nav-type-heading:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.nav-type-heading a { display: flex; justify-content: space-between; color: var(--teal); font-size: 11px; font-weight: 850; }
.nav-type-heading small { color: var(--muted); font-weight: 600; }

.nav-group-title > a {
  min-width: 0;
  display: inline;
  margin: 0;
  padding: 0;
  color: inherit;
  background: transparent;
  font-weight: inherit;
}
.nav-group-title > a::before { display: none; }
.nav-group-title > a:hover { color: var(--teal); transform: none; }

.knowledge-home { display: grid; gap: 22px; }
.knowledge-home-hero,
.home-content-section,
.related-docs {
  border: 1px solid rgba(255, 255, 255, 0.105);
  border-radius: 12px;
  background: rgba(17, 21, 28, 0.72);
  box-shadow: 0 24px 72px rgba(0, 0, 0, 0.22), inset 0 1px rgba(255, 255, 255, 0.035);
  backdrop-filter: blur(24px) saturate(1.08);
}

.knowledge-home-hero { padding: clamp(30px, 5vw, 58px); }
.knowledge-home-hero > h1 { max-width: none; margin: 10px 0 12px; font-size: 52px; line-height: 1.08; }
.knowledge-home-hero > p { max-width: 720px; margin: 0; color: #aeb9c7; font-size: 17px; }
.home-portal-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 32px; }
.home-portal {
  position: relative;
  overflow: hidden;
  min-height: 210px;
  display: flex;
  flex-direction: column;
  padding: 24px;
  border: 1px solid rgba(66, 214, 196, 0.2);
  border-radius: 9px;
  background: rgba(10, 15, 21, 0.72);
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}
.home-portal.is-tool { border-color: rgba(242, 189, 88, 0.25); }
.home-portal:hover { transform: translateY(-3px); border-color: var(--teal); background: rgba(18, 27, 34, 0.9); }
.home-portal.is-tool:hover { border-color: var(--amber); }
.home-portal > span { color: var(--teal); font-size: 10px; font-weight: 850; text-transform: uppercase; }
.home-portal.is-tool > span { color: var(--amber); }
.home-portal strong { margin-top: 8px; font-size: 24px; }
.home-portal p { margin: 8px 0 22px; color: var(--muted); font-size: 13px; }
.home-portal small { margin-top: auto; color: #b7c0cb; }
.home-portal small b { float: right; color: var(--teal); font-size: 18px; }

.home-content-section { padding: 28px; }
.home-content-section + .home-content-section { margin-top: 2px; }
.home-section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; }
.home-section-heading span,
.related-docs-heading span { color: var(--teal); font-size: 10px; font-weight: 850; text-transform: uppercase; }
.home-section-heading h2,
.related-docs-heading h2 { margin: 3px 0 4px; font-size: 26px; }
.home-section-heading p { max-width: 630px; margin: 0; color: var(--muted); font-size: 13px; }
.home-section-heading > a { flex: 0 0 auto; color: var(--teal); font-size: 12px; font-weight: 750; }
.home-category-links { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0; }
.home-category-links a { padding: 7px 10px; border: 1px solid var(--line); border-radius: 6px; color: #c4ccd7; background: rgba(9, 12, 17, 0.55); font-size: 12px; }
.home-category-links a:hover { border-color: var(--teal); color: var(--text); }
.home-category-links small { margin-left: 7px; color: var(--muted); }
.featured-doc-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 22px; }
.featured-doc-card { min-width: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 8px; background: rgba(9, 12, 17, 0.62); transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease; }
.featured-doc-card:hover { border-color: rgba(66, 214, 196, 0.55); }
.featured-doc-card:hover { transform: translateY(-2px); background: rgba(14, 19, 26, 0.82); }
.featured-doc-card img { width: 100%; aspect-ratio: 16 / 9; display: block; object-fit: cover; }
.featured-doc-card > div { padding: 16px; }
.featured-doc-card span { color: var(--amber); font-size: 10px; }
.featured-doc-card h3 { margin: 5px 0 7px; font-size: 16px; line-height: 1.35; }
.featured-doc-card p { display: -webkit-box; overflow: hidden; margin: 0; color: var(--muted); font-size: 12px; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.featured-doc-card small { display: block; margin-top: 14px; color: #758196; }
.latest-doc-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 18px; margin-top: 20px; border-top: 1px solid var(--line-soft); }
.latest-doc-list a { min-width: 0; display: flex; justify-content: space-between; gap: 12px; padding: 12px 2px; border-bottom: 1px solid var(--line-soft); }
.latest-doc-list span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.latest-doc-list small { flex: 0 0 auto; color: var(--muted); }
.home-section-empty { margin-top: 22px; padding: 24px; border: 1px dashed var(--line); border-radius: 8px; color: var(--muted); text-align: center; }

.public-filter-bar { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.public-filter-bar a { padding: 6px 10px; border: 1px solid var(--line); border-radius: 6px; color: var(--muted); font-size: 12px; }
.public-filter-bar a.active { border-color: var(--teal); color: var(--text); background: rgba(66, 214, 196, 0.08); }
.public-filter-bar .clear-filter { margin-left: auto; color: var(--amber); }
.public-tag-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.public-tag-list em { color: var(--teal); font-size: 11px; font-style: normal; }

.article-taxonomy { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 15px; }
.article-taxonomy a { padding: 4px 8px; border: 1px solid rgba(66, 214, 196, 0.2); border-radius: 5px; color: var(--teal); background: rgba(8, 12, 17, 0.52); font-size: 11px; }
.article-taxonomy .article-series { border-color: rgba(242, 189, 88, 0.25); color: var(--amber); }
.related-docs { margin-top: 20px; padding: 26px; }
.related-doc-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 18px; }
.related-doc-grid a { min-width: 0; display: grid; padding: 16px; border: 1px solid var(--line); border-radius: 7px; background: rgba(9, 12, 17, 0.6); }
.related-doc-grid a:hover { border-color: var(--teal); }
.related-doc-grid small { color: var(--amber); }
.related-doc-grid strong { margin: 5px 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.related-doc-grid span { overflow: hidden; color: var(--muted); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }

@media (max-width: 1640px) {
  .docs-shell { grid-template-columns: var(--sidebar-width) minmax(0, 1fr); }
  .docs-toc { display: none; }
}
@media (max-width: 820px) {
  .docs-topbar { grid-template-columns: auto minmax(0, 1fr); gap: 12px; padding: 0 14px; }
  .mobile-nav-button { display: inline-grid; place-items: center; }
  .docs-brand small { display: none; }
  .docs-search kbd, .home-link { display: none; }
  .docs-shell { display: block; }
  .docs-sidebar { position: fixed; left: 0; top: 66px; z-index: 25; width: min(86vw, 320px); transform: translateX(-105%); transition: transform 0.2s ease; box-shadow: 18px 0 45px rgba(0, 0, 0, 0.42); }
  .docs-nav-open .docs-sidebar { transform: translateX(0); }
  .docs-scrim { position: fixed; inset: 66px 0 0; z-index: 20; background: rgba(0, 0, 0, 0.56); }
  .docs-nav-open .docs-scrim { display: block; }
  .docs-main { padding: 42px 22px 72px; }
  .article-header { padding: 24px; }
  .article-header.has-cover .article-header-content { min-height: 310px; }
  .knowledge-rendered { padding: 24px; }
  .knowledge-lightbox { padding: 12px 14px 16px; }
  .knowledge-lightbox-stage img { max-width: 96vw; max-height: calc(100vh - 116px); }
  .home-portal-grid,
  .featured-doc-grid { grid-template-columns: 1fr; }
  .latest-doc-list { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .docs-topbar { grid-template-columns: auto 1fr; }
  .docs-brand > span:last-child { display: none; }
  .docs-main { padding-left: 16px; padding-right: 16px; }
  .article-header h1, .search-results h1 { font-size: 31px; }
  .article-summary { font-size: 15px; }
  .article-meta span + span::before { display: none; }
  .article-neighbors { grid-template-columns: 1fr; }
  .article-neighbors .next { text-align: left; }
  .article-cover[data-cover-width] { width: 100%; }
  .article-header { padding: 20px; border-radius: 10px; }
  .article-header.has-cover .article-header-content { min-height: 280px; }
  .knowledge-rendered { padding: 22px 20px 30px; border-radius: 10px; }
  .knowledge-lightbox-toolbar > span { display: none; }
  .knowledge-lightbox-toolbar { justify-content: flex-end; }
  .knowledge-home-hero,
  .home-content-section,
  .related-docs { padding: 22px 20px; }
  .knowledge-home-hero > h1 { font-size: 34px; }
  .home-section-heading { align-items: flex-start; flex-direction: column; }
  .related-doc-grid { grid-template-columns: 1fr; }
  .public-filter-bar .clear-filter { margin-left: 0; }
}

/* AI music atmosphere */
body {
  position: relative;
  background: #080a0e;
}

.knowledge-video-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background: #080a0e;
}

.knowledge-video-layer video,
.knowledge-background-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  min-width: 100%;
  min-height: 100%;
  object-fit: cover;
  object-position: center center;
  opacity: 0.26;
  filter: saturate(1.35) contrast(1.16) brightness(0.64);
  transform: scale(1.025);
  animation: ambientVideoDrift 22s ease-in-out infinite alternate;
}

.knowledge-background-image {
  opacity: 0.58;
  filter: saturate(1.08) contrast(1.04) brightness(0.74);
}

.knowledge-video-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 8, 12, 0.54), rgba(6, 8, 12, 0.76));
}

.knowledge-video-layer.has-image .knowledge-video-shade {
  background:
    linear-gradient(180deg, rgba(5, 8, 12, 0.42), rgba(5, 8, 12, 0.68)),
    linear-gradient(90deg, rgba(6, 10, 15, 0.34), rgba(8, 12, 18, 0.12) 46%, rgba(6, 10, 15, 0.3));
}

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  height: 2px;
  background: rgba(255, 255, 255, 0.06);
}

.reading-progress span {
  width: 100%;
  height: 100%;
  display: block;
  transform: scaleX(0);
  transform-origin: left center;
  background: var(--teal);
  box-shadow: 0 0 14px rgba(66, 214, 196, 0.8), 0 0 28px rgba(242, 189, 88, 0.28);
  transition: transform 0.08s linear;
}

.docs-topbar {
  background: rgba(8, 10, 14, 0.82);
  border-bottom-color: rgba(90, 214, 202, 0.2);
  box-shadow: 0 12px 42px rgba(0, 0, 0, 0.24);
}

.docs-shell {
  position: relative;
  z-index: 2;
}

.docs-brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  color: #07100f;
  background: rgba(66, 214, 196, 0.96);
  box-shadow: 0 0 28px rgba(66, 214, 196, 0.3), inset 0 0 0 1px rgba(255, 255, 255, 0.4);
}

.docs-brand-mark i {
  width: 3px;
  border-radius: 3px;
  background: #08110f;
  animation: brandEqualizer 1.15s ease-in-out infinite alternate;
}

.docs-brand-mark i:nth-child(1) { height: 9px; animation-delay: -0.2s; }
.docs-brand-mark i:nth-child(2) { height: 18px; animation-delay: -0.65s; }
.docs-brand-mark i:nth-child(3) { height: 13px; animation-delay: -0.4s; }
.docs-brand-mark i:nth-child(4) { height: 7px; animation-delay: -0.85s; }

.docs-brand strong {
  color: #f7fbfb;
  text-shadow: 0 0 18px rgba(66, 214, 196, 0.24);
}

.docs-search {
  border-color: rgba(112, 129, 151, 0.32);
  background: rgba(15, 19, 26, 0.72);
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.035);
}

.docs-search:focus-within {
  border-color: rgba(66, 214, 196, 0.72);
  box-shadow: 0 0 0 3px rgba(66, 214, 196, 0.11), 0 0 30px rgba(66, 214, 196, 0.08);
}

.topbar-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 18px;
}

.home-link {
  justify-self: auto;
  padding-left: 16px;
  border-left: 1px solid var(--line);
}

[data-spectrum] {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  overflow: hidden;
}

[data-spectrum] > i {
  display: block;
  height: calc(18% + (var(--phase) * 4%));
  min-height: 3px;
  border-radius: 2px;
  background: var(--teal);
  opacity: 0.72;
  transform-origin: center;
  animation: spectrumPulse 1.1s ease-in-out infinite alternate;
  animation-delay: calc(var(--bar) * -73ms);
}

[data-spectrum] > i:nth-child(3n) { background: var(--amber); opacity: 0.88; }
[data-spectrum] > i:nth-child(5n) { background: var(--coral); opacity: 0.72; }

.topbar-spectrum {
  width: 74px;
  height: 22px;
}

.topbar-spectrum > i { width: 3px; }

.docs-sidebar {
  border-right-color: rgba(66, 214, 196, 0.12);
  background: rgba(10, 13, 18, 0.82);
  backdrop-filter: blur(22px);
}

.sidebar-intro {
  position: relative;
  padding-top: 4px;
  padding-bottom: 24px;
  border-bottom-color: rgba(255, 255, 255, 0.09);
}

.sidebar-intro::before {
  content: "";
  position: absolute;
  left: 8px;
  bottom: -1px;
  width: 54px;
  height: 1px;
  background: var(--teal);
  box-shadow: 0 0 12px rgba(66, 214, 196, 0.62);
}

.sidebar-signal {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.sidebar-spectrum {
  width: 78px;
  height: 24px;
}

.sidebar-spectrum > i { width: 3px; }

.nav-group-title {
  color: #edf4f5;
  font-size: 13px;
}

.nav-group-title small {
  min-width: 22px;
  height: 20px;
  display: inline-grid;
  place-items: center;
  border: 1px solid rgba(66, 214, 196, 0.18);
  border-radius: 5px;
  color: var(--teal);
  background: rgba(66, 214, 196, 0.05);
  font-size: 10px;
}

.nav-group a {
  position: relative;
  margin: 2px 0;
  border-left: 0;
  border-radius: 5px;
  transition: color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

.nav-group a::before {
  content: "";
  width: 5px;
  height: 5px;
  flex: 0 0 auto;
  border: 1px solid #687589;
  border-radius: 50%;
}

.nav-group a > span { flex: 1; }
.nav-group a:hover { transform: translateX(2px); }

.nav-group a.active {
  color: #f8ffff;
  border-left-color: transparent;
  background: rgba(66, 214, 196, 0.105);
  box-shadow: inset 2px 0 var(--teal), 0 0 24px rgba(66, 214, 196, 0.045);
}

.nav-group a.active::before {
  border-color: var(--teal);
  background: var(--teal);
  box-shadow: 0 0 11px rgba(66, 214, 196, 0.8);
  animation: signalBlink 1.8s ease-in-out infinite;
}

.docs-main {
  border-left: 1px solid rgba(255, 255, 255, 0.075);
  border-right: 1px solid rgba(255, 255, 255, 0.075);
  background: rgba(9, 12, 17, 0.68);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.24), inset 0 1px rgba(255, 255, 255, 0.025);
  backdrop-filter: blur(24px) saturate(1.12);
}

.article-header {
  position: relative;
  overflow: hidden;
  padding: 30px 32px;
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(18, 22, 30, 0.72);
  box-shadow: 0 22px 64px rgba(0, 0, 0, 0.26), inset 0 1px rgba(255, 255, 255, 0.045);
  backdrop-filter: blur(26px) saturate(1.12);
}

.article-header::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 32%;
  height: 1px;
  background: var(--amber);
  box-shadow: 0 0 16px rgba(242, 189, 88, 0.46);
}

.article-signal-label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 28px;
  color: var(--teal);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.article-signal-label i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 13px rgba(66, 214, 196, 0.92);
  animation: signalBlink 1.55s ease-in-out infinite;
}

.article-signal-label b {
  margin-left: 3px;
  padding: 2px 6px;
  border: 1px solid rgba(242, 189, 88, 0.28);
  border-radius: 4px;
  color: var(--amber);
  background: rgba(242, 189, 88, 0.06);
  font-size: 9px;
  letter-spacing: 0;
}

.article-header h1 {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin-top: 11px;
  color: #f8fbff;
  text-shadow: 0 8px 32px rgba(0, 0, 0, 0.46), 0 0 34px rgba(66, 214, 196, 0.08);
}

.article-summary {
  position: relative;
  z-index: 1;
  color: #c4ced9;
}

.article-meta span:first-child { color: var(--teal); }

.article-spectrum {
  height: 58px;
  margin-top: 24px;
  padding: 8px 0;
  justify-content: stretch;
  border-top: 1px solid rgba(255, 255, 255, 0.055);
  border-bottom: 1px solid rgba(255, 255, 255, 0.055);
  opacity: 0.72;
}

.article-spectrum > i {
  min-width: 2px;
  max-width: 8px;
  flex: 1;
}

.article-cover {
  position: absolute;
  overflow: hidden;
  border-radius: 0;
  box-shadow: none;
}

.article-cover::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--teal);
  box-shadow: 0 0 18px rgba(66, 214, 196, 0.58);
}

.knowledge-rendered {
  border-color: rgba(255, 255, 255, 0.105);
  color: #d9e1e9;
  background: rgba(17, 21, 28, 0.72);
  box-shadow: 0 24px 72px rgba(0, 0, 0, 0.22), inset 0 1px rgba(255, 255, 255, 0.035);
  backdrop-filter: blur(26px) saturate(1.1);
}

.knowledge-rendered h2 {
  position: relative;
  padding-left: 16px;
  border-bottom-color: rgba(255, 255, 255, 0.11);
}

.knowledge-rendered h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.18em;
  width: 4px;
  height: 0.96em;
  border-radius: 3px;
  background: var(--teal);
  box-shadow: 0 0 13px rgba(66, 214, 196, 0.46);
}

.knowledge-rendered h3 { color: #f6d99e; }

.knowledge-rendered blockquote {
  border-left-color: var(--amber);
  background: rgba(21, 25, 33, 0.78);
  box-shadow: inset 0 0 26px rgba(242, 189, 88, 0.025);
}

.knowledge-rendered pre {
  border-color: rgba(66, 214, 196, 0.2);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.22), inset 0 1px rgba(255, 255, 255, 0.03);
}

.knowledge-rendered table { background: rgba(10, 13, 18, 0.62); }
.knowledge-rendered tr { transition: background 0.15s ease; }
.knowledge-rendered tbody tr:hover { background: rgba(66, 214, 196, 0.055); }

.article-neighbors a {
  position: relative;
  overflow: hidden;
  background: rgba(17, 21, 29, 0.72);
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.article-neighbors a:hover {
  transform: translateY(-2px);
  background: rgba(25, 31, 40, 0.84);
}

.docs-toc {
  background: rgba(9, 12, 17, 0.56);
  backdrop-filter: blur(14px);
}

.toc-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.toc-heading .toc-title { margin: 0; }

.toc-heading > span {
  color: var(--coral);
  font-size: 8px;
  font-weight: 850;
  letter-spacing: 0.12em;
  animation: signalBlink 1.8s ease-in-out infinite;
}

.toc-content a {
  border-left-color: rgba(255, 255, 255, 0.12);
  transition: color 0.16s ease, border-color 0.16s ease, padding-left 0.16s ease;
}

.toc-content a:hover,
.toc-content a.active {
  padding-left: 14px;
  text-shadow: 0 0 14px rgba(66, 214, 196, 0.25);
}

.search-visual-row {
  display: flex;
  align-items: center;
  gap: 18px;
}

.search-spectrum {
  width: min(320px, 50%);
  height: 34px;
  justify-content: stretch;
}

.search-spectrum > i { flex: 1; min-width: 2px; }

.result-item {
  position: relative;
  padding-left: 14px;
  transition: background 0.18s ease, padding-left 0.18s ease;
}

.result-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 30px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 10px rgba(66, 214, 196, 0.65);
}

.result-item:hover {
  padding-left: 20px;
  background: rgba(66, 214, 196, 0.035);
}

.docs-empty-state {
  background: rgba(14, 18, 24, 0.78);
  backdrop-filter: blur(16px);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.24);
}

@keyframes spectrumPulse {
  0% { transform: scaleY(0.24); opacity: 0.42; }
  55% { transform: scaleY(1); opacity: 0.9; }
  100% { transform: scaleY(0.52); opacity: 0.62; }
}

@keyframes brandEqualizer {
  0% { transform: scaleY(0.45); }
  100% { transform: scaleY(1); }
}

@keyframes signalBlink {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 1; }
}

@keyframes ambientVideoDrift {
  0% { transform: scale(1.025) translate3d(-0.3%, -0.2%, 0); }
  100% { transform: scale(1.055) translate3d(0.4%, 0.25%, 0); }
}

@media (max-width: 820px) {
  .topbar-actions { display: none; }
  .docs-main { background: rgba(8, 11, 16, 0.82); }
  .article-spectrum { height: 48px; }
  .knowledge-video-layer video { opacity: 0.2; }
  .knowledge-background-image { opacity: 0.52; }
  .knowledge-video-layer.has-image .knowledge-video-shade {
    background: linear-gradient(180deg, rgba(5, 8, 12, 0.46), rgba(5, 8, 12, 0.72));
  }
}

@media (max-width: 520px) {
  .article-signal-label { margin-top: 22px; }
  .article-spectrum { gap: 2px; }
  .article-spectrum > i:nth-child(even) { display: none; }
  .search-spectrum { width: 42%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* Public visual direction: music editorial rhythm with restrained anime accents. */
:root {
  --bg: #070a12;
  --panel: #0d1320;
  --panel-2: #131b2a;
  --line: rgba(255, 255, 255, 0.15);
  --line-soft: rgba(255, 255, 255, 0.09);
  --text: #f5f2e9;
  --muted: #929caf;
  --teal: #43e2d1;
  --amber: #ffd45a;
  --coral: #ff4f8b;
}

.knowledge-video-layer video,
.knowledge-background-image {
  opacity: 0.32;
  filter: saturate(1.02) contrast(1.05) brightness(0.66);
  animation: none;
}

.knowledge-background-image { opacity: 0.48; }
.knowledge-video-shade {
  background: linear-gradient(180deg, rgba(5, 8, 15, 0.58), rgba(5, 8, 15, 0.8));
}
.knowledge-video-layer.has-image .knowledge-video-shade {
  background:
    linear-gradient(90deg, rgba(5, 8, 15, 0.7), rgba(5, 8, 15, 0.34) 50%, rgba(5, 8, 15, 0.62)),
    linear-gradient(180deg, rgba(5, 8, 15, 0.34), rgba(5, 8, 15, 0.72));
}

.reading-progress span { box-shadow: none; }
.docs-topbar {
  border-bottom-color: var(--line);
  background: rgba(7, 10, 18, 0.92);
  box-shadow: none;
}
.docs-brand-mark {
  border-radius: 5px;
  background: var(--teal);
  box-shadow: none;
}
.docs-brand-mark i { border-radius: 0; animation: none; }
.docs-brand strong { text-shadow: none; }
.docs-search {
  border-radius: 5px;
  background: rgba(13, 19, 32, 0.88);
  box-shadow: none;
}
.docs-search:focus-within { box-shadow: 0 0 0 2px rgba(67, 226, 209, 0.16); }
[data-spectrum] > i { border-radius: 0; animation: none; }

.docs-sidebar {
  border-right-color: var(--line-soft);
  background: rgba(7, 10, 18, 0.88);
  backdrop-filter: blur(16px);
}
.sidebar-intro::before { background: var(--coral); box-shadow: none; }
.nav-group-title small {
  border: 0;
  border-radius: 2px;
  color: #081016;
  background: var(--teal);
}
.nav-group a { border-radius: 3px; }
.nav-group a::before { border-radius: 0; transform: rotate(45deg); }
.nav-group a.active {
  color: var(--text);
  background: rgba(67, 226, 209, 0.09);
  box-shadow: inset 3px 0 var(--teal);
}
.nav-group a.active::before { box-shadow: none; animation: none; }

.docs-main {
  border-color: var(--line-soft);
  background: rgba(7, 10, 18, 0.78);
  box-shadow: none;
  backdrop-filter: blur(18px);
}
.home-content-section,
.article-header,
.knowledge-rendered,
.docs-empty-state {
  border-radius: 6px;
  box-shadow: none;
  backdrop-filter: none;
}
.home-content-section {
  position: relative;
  border-color: var(--line);
  background: rgba(13, 19, 32, 0.92);
}
.home-content-section::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--teal);
}
.home-content-section:nth-child(3n+2)::before { background: var(--coral); }
.home-content-section:nth-child(3n)::before { background: var(--amber); }
.featured-doc-card {
  border-radius: 5px;
  background: #090d16;
}
.featured-doc-card:hover { transform: translateY(-3px); border-color: var(--teal); background: #0d1421; }

.article-header {
  border-color: var(--line);
  background: rgba(13, 19, 32, 0.9);
  box-shadow: none;
  backdrop-filter: none;
}
.article-header::after { height: 3px; width: 38%; background: var(--coral); box-shadow: none; }
.article-signal-label { letter-spacing: 0; }
.article-signal-label i { border-radius: 0; transform: rotate(45deg); box-shadow: none; animation: none; }
.article-header h1 { text-shadow: 0 3px 18px rgba(0, 0, 0, 0.7); }
.article-cover::after { height: 3px; background: var(--teal); box-shadow: none; }
.article-spectrum { opacity: 0.78; }

.knowledge-rendered {
  border-color: var(--line);
  color: #dce1e9;
  background: rgba(10, 15, 25, 0.94);
  box-shadow: none;
}
.knowledge-rendered h2::before { border-radius: 0; background: var(--teal); box-shadow: none; }
.knowledge-rendered h3 { color: var(--amber); }
.knowledge-rendered blockquote { background: #131927; box-shadow: none; }
.knowledge-rendered pre { border-color: rgba(67, 226, 209, 0.24); box-shadow: none; }
.copy-code-button { border-radius: 3px; }
.article-neighbors a, .related-doc-grid a { border-radius: 4px; background: rgba(13, 19, 32, 0.94); }
.article-neighbors a:hover, .related-doc-grid a:hover { transform: translateY(-2px); border-color: var(--teal); }
.docs-toc { background: rgba(7, 10, 18, 0.72); backdrop-filter: blur(10px); }
.toc-heading > span { color: var(--coral); letter-spacing: 0; animation: none; }
.toc-content a:hover, .toc-content a.active { text-shadow: none; }
.result-item::before { border-radius: 0; transform: rotate(45deg); box-shadow: none; }

@media (max-width: 820px) {
  .docs-main { background: rgba(7, 10, 18, 0.9); }
  .knowledge-video-layer video { opacity: 0.23; }
}

/* Knowledge member access */
.knowledge-login-page {
  min-height: 100svh;
  overflow-x: hidden;
  background: #070a12;
}
.knowledge-login-backdrop,
.knowledge-login-backdrop video,
.knowledge-login-backdrop > div {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
}
.knowledge-login-backdrop { z-index: -1; overflow: hidden; }
.knowledge-login-backdrop video { object-fit: cover; opacity: 0.44; filter: saturate(0.82) contrast(1.08); }
.knowledge-login-backdrop > div { background: rgba(4, 7, 14, 0.64); }
.knowledge-login-topbar {
  width: min(1180px, calc(100% - 48px));
  height: 76px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(67, 226, 209, 0.18);
}
.knowledge-login-topbar > a:last-child { color: var(--muted); font-size: 0.8rem; font-weight: 700; }
.knowledge-login-topbar > a:last-child:hover { color: var(--amber); }
.knowledge-login-shell {
  width: min(1180px, calc(100% - 48px));
  min-height: calc(100svh - 76px);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(350px, 0.75fr);
  align-items: center;
  gap: clamp(48px, 8vw, 110px);
  padding: 56px 0 84px;
}
.knowledge-login-scene { min-width: 0; }
.login-scene-index,
.login-scene-copy > p:first-child,
.login-panel-heading > span {
  color: var(--teal);
  font: 800 0.68rem/1.2 Consolas, monospace;
  text-transform: uppercase;
}
.login-scene-copy { margin-top: clamp(80px, 14vh, 150px); }
.login-scene-copy h1 {
  max-width: 720px;
  margin: 14px 0 28px;
  font-size: clamp(3rem, 6vw, 5.7rem);
  line-height: 0.98;
  letter-spacing: 0;
}
.login-scene-copy h1 span { display: block; }
.login-scene-copy h1 span:last-child { color: var(--amber); }
.login-spectrum { height: 36px; display: flex; align-items: center; gap: 4px; overflow: hidden; }
.login-spectrum i { flex: 1; min-width: 2px; height: 26px; background: var(--teal); transform-origin: center; will-change: transform; }
.login-spectrum i:nth-child(4n) { background: var(--coral); }
.login-spectrum i:nth-child(7n) { background: var(--amber); }
.login-scene-note { max-width: 600px; margin: 20px 0 0; color: #b5bfcd; }
.knowledge-login-panel {
  position: relative;
  padding: 34px;
  border: 1px solid rgba(67, 226, 209, 0.34);
  border-radius: 6px;
  background: rgba(8, 12, 21, 0.92);
  box-shadow: 8px 8px 0 rgba(255, 120, 106, 0.64);
  backdrop-filter: blur(18px);
  will-change: transform, opacity;
}
.knowledge-login-panel::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 3px; background: var(--teal); }
.login-panel-heading h2 { margin: 8px 0 6px; font-size: 1.9rem; letter-spacing: 0; }
.login-panel-heading p { margin: 0; color: var(--muted); font-size: 0.84rem; }
.knowledge-login-error {
  margin-top: 20px;
  padding: 10px 12px;
  border-left: 3px solid var(--coral);
  color: #ffd3ce;
  background: rgba(255, 120, 106, 0.1);
  font-size: 0.82rem;
}
.knowledge-login-panel form { display: grid; gap: 18px; margin-top: 28px; }
.knowledge-login-panel label > span { display: block; margin-bottom: 7px; color: #cbd3de; font-size: 0.76rem; font-weight: 700; }
.knowledge-login-panel input {
  width: 100%;
  height: 48px;
  padding: 0 13px;
  border: 1px solid #303a4b;
  border-radius: 4px;
  outline: 0;
  color: var(--text);
  background: #090d16;
}
.knowledge-login-panel input:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(66, 214, 196, 0.12); }
.knowledge-password-field { position: relative; }
.knowledge-password-field input { padding-right: 62px; }
.knowledge-password-field button { position: absolute; top: 5px; right: 5px; height: 38px; padding: 0 11px; border: 0; color: var(--teal); background: transparent; cursor: pointer; font-size: 0.72rem; font-weight: 800; }
.knowledge-login-submit {
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 17px;
  border: 0;
  border-radius: 4px;
  color: #07100f;
  background: var(--teal);
  cursor: pointer;
  font-weight: 900;
  will-change: transform;
}
.knowledge-login-submit b { font-size: 1.2rem; will-change: transform; }
.login-account-note { display: flex; gap: 10px; margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line-soft); }
.login-account-note > span { width: 8px; height: 8px; margin-top: 7px; flex: 0 0 auto; background: var(--amber); transform: rotate(45deg); }
.login-account-note p { margin: 0; color: var(--muted); font-size: 0.76rem; }

@media (max-width: 860px) {
  .knowledge-login-shell { grid-template-columns: 1fr; gap: 38px; padding-top: 42px; }
  .login-scene-copy { margin-top: 44px; }
  .login-scene-copy h1 { font-size: clamp(2.7rem, 11vw, 4.4rem); }
  .knowledge-login-panel { width: 100%; max-width: 520px; }
}

@media (max-width: 560px) {
  .knowledge-login-topbar,
  .knowledge-login-shell { width: min(100% - 28px, 1180px); }
  .knowledge-login-topbar { height: 66px; }
  .knowledge-login-shell { min-height: calc(100svh - 66px); padding: 34px 0 58px; }
  .knowledge-login-scene { display: none; }
  .knowledge-login-panel { padding: 26px 22px; box-shadow: 5px 5px 0 rgba(255, 120, 106, 0.64); }
}

/* Member and Pro article states */
.knowledge-member-summary { display: grid; justify-items: end; line-height: 1.15; }
.knowledge-member-summary span { max-width: 130px; overflow: hidden; color: #dce4ed; font-size: 0.75rem; font-weight: 750; text-overflow: ellipsis; white-space: nowrap; }
.knowledge-member-summary b { margin-top: 3px; color: var(--muted); font: 800 0.56rem/1 Consolas, monospace; }
.knowledge-member-summary b.is-pro { color: var(--amber); }
.knowledge-logout-button,
.sidebar-member button {
  padding: 0;
  border: 0;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font-size: 0.72rem;
  font-weight: 700;
}
.knowledge-logout-button:hover,
.sidebar-member button:hover { color: var(--coral); }
.sidebar-member {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
}
.sidebar-member > div { display: grid; min-width: 0; }
.sidebar-member strong { overflow: hidden; font-size: 0.75rem; text-overflow: ellipsis; white-space: nowrap; }
.sidebar-member span { margin-top: 2px; color: var(--amber); font-size: 0.62rem; }
.nav-article-badges { display: flex; align-items: center; flex: 0 0 auto; gap: 5px; }
.pro-content-badge {
  display: inline-block;
  padding: 2px 5px;
  border: 1px solid rgba(242, 189, 88, 0.44);
  border-radius: 2px;
  color: var(--amber);
  background: rgba(242, 189, 88, 0.08);
  font: 800 0.58rem/1.25 Consolas, monospace;
  vertical-align: middle;
}
.card-pro-badge { margin-left: 7px; }
.latest-doc-list span .pro-content-badge { margin-left: 7px; }
.related-doc-grid small .pro-content-badge { margin-left: 6px; }
.pro-access-state {
  max-width: 660px;
  margin: clamp(60px, 12vh, 130px) auto 0;
  padding: clamp(30px, 5vw, 54px);
  border: 1px solid rgba(242, 189, 88, 0.42);
  border-radius: 6px;
  background: rgba(9, 13, 22, 0.94);
  box-shadow: 8px 8px 0 rgba(255, 120, 106, 0.5);
  text-align: left;
}
.pro-access-signal { height: 38px; display: flex; align-items: center; gap: 5px; margin-bottom: 24px; }
.pro-access-signal i { width: 5px; height: 20px; background: var(--amber); transform-origin: center; }
.pro-access-signal i:nth-child(2), .pro-access-signal i:nth-child(4) { height: 30px; background: var(--teal); }
.pro-access-signal i:nth-child(3) { height: 38px; background: var(--coral); }
.pro-access-state > span { color: var(--amber); font: 800 0.68rem/1 Consolas, monospace; }
.pro-access-state h1 { margin: 12px 0 8px; font-size: clamp(2rem, 5vw, 3.3rem); line-height: 1.06; letter-spacing: 0; }
.pro-access-state > strong { display: block; color: #dce4ed; }
.pro-access-state > p { max-width: 540px; margin: 20px 0 0; color: var(--muted); }
.pro-access-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.pro-access-actions a { padding: 10px 14px; border: 1px solid var(--teal); border-radius: 4px; color: #06100f; background: var(--teal); font-size: 0.78rem; font-weight: 850; }
.pro-access-actions a.secondary { color: var(--text); border-color: var(--line); background: transparent; }
.pro-access-state > small { display: block; margin-top: 22px; color: #788497; }

@media (max-width: 820px) {
  .pro-access-state { margin-top: 38px; }
}
/* Protected article downloads */
.article-resources {
  margin-top: 30px;
  padding: 24px 28px;
  border: 1px solid rgba(112, 140, 170, .28);
  border-radius: 8px;
  background: rgba(9, 14, 22, .82);
  backdrop-filter: blur(14px);
}
.article-resources-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 16px; }
.article-resources-heading span { color: #43e2d1; font-size: 10px; font-weight: 800; text-transform: uppercase; }
.article-resources-heading h2 { margin: 3px 0 0; font-size: 21px; letter-spacing: 0; }
.article-resources-heading p { margin: 0; color: #8795a8; font-size: 12px; }
.article-resource-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.article-resource-item {
  min-height: 82px;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) 32px;
  align-items: center;
  gap: 13px;
  padding: 13px;
  border: 1px solid rgba(104, 128, 158, .25);
  border-radius: 6px;
  color: #edf4fb;
  background: rgba(16, 23, 34, .8);
  text-decoration: none;
  transition: transform .18s ease, border-color .18s ease, background-color .18s ease;
}
.article-resource-item:hover { transform: translateY(-2px); border-color: rgba(67, 226, 209, .68); background: rgba(15, 34, 41, .92); }
.article-resource-type {
  width: 46px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(103, 168, 255, .48);
  border-radius: 5px;
  color: #7ab4ff;
  background: rgba(28, 56, 83, .42);
  font-size: 10px;
  font-weight: 800;
}
.article-resource-copy { min-width: 0; }
.article-resource-copy strong,
.article-resource-copy small,
.article-resource-copy em { display: block; overflow-wrap: anywhere; }
.article-resource-copy strong { color: #f4f7fb; font-size: 14px; }
.article-resource-copy small { margin-top: 4px; color: #a4afbd; font-size: 12px; line-height: 1.45; }
.article-resource-copy em { margin-top: 5px; color: #69788c; font-size: 10px; font-style: normal; }
.article-resource-download { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; color: #43e2d1; background: rgba(67, 226, 209, .1); font-size: 17px; }

@media (max-width: 760px) {
  .article-resources { padding: 20px 16px; }
  .article-resource-grid { grid-template-columns: 1fr; }
  .article-resources-heading { align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  .article-resource-item { transition: none; }
  .article-resource-item:hover { transform: none; }
}

/* Knowledge home alignment and category navigation */
.docs-nav .nav-group {
  position: relative;
  padding: 0 4px 14px;
  border: 0;
  border-bottom: 1px solid rgba(104, 128, 158, 0.18);
  border-radius: 0;
  background: transparent;
}
.docs-nav .nav-group + .nav-group { margin-top: 15px; }
.docs-nav .nav-group-title {
  min-height: 36px;
  gap: 8px;
  padding: 0 2px 6px;
  border-bottom: 0;
}
.docs-nav .nav-group-title > a {
  min-width: 0;
  display: block;
  overflow: hidden;
  color: #dce5ef;
  font-size: 13px;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.docs-nav .nav-group-title > a::before { display: none; }
.docs-nav .nav-group-title > a:hover { color: #f3f7fb; }
.docs-nav .nav-group-title small {
  min-width: 21px;
  height: 20px;
  border: 1px solid rgba(126, 143, 164, 0.28);
  border-radius: 3px;
  color: #91a0b3;
  background: transparent;
  font-weight: 750;
}
.docs-nav .nav-group-toggle {
  width: 24px;
  height: 24px;
  border-color: transparent;
  color: #77869a;
  background: transparent;
}
.docs-nav .nav-group-toggle:hover {
  border-color: rgba(126, 143, 164, 0.22);
  color: #c7d1dd;
}
.docs-nav .nav-group-content { padding-top: 3px; }
.docs-nav .nav-group-content > p {
  margin: 0 5px 6px;
  padding: 0 3px 7px;
  border-bottom: 0;
  color: #77869a;
}
.docs-nav .nav-group-content > a {
  margin: 3px 0;
  padding-left: 8px;
  padding-right: 8px;
}
.docs-nav .nav-group-content > a::before { display: none; }
.docs-nav .nav-group-content > a.active {
  border-left-color: #8c9bad;
  background: rgba(126, 143, 164, 0.08);
  box-shadow: none;
}

.featured-doc-grid { align-items: stretch; gap: 14px; }
.featured-doc-card {
  height: 100%;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
}
.featured-doc-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border-bottom: 1px solid var(--line-soft);
  background: #101827;
}
.featured-doc-card .featured-doc-media img {
  width: 100%;
  height: 100%;
  aspect-ratio: auto;
  object-fit: cover;
  transition: transform 0.35s ease;
}
.featured-doc-card:hover .featured-doc-media img { transform: scale(1.025); }
.featured-doc-placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 14px;
  color: #7590aa;
  background: #101827;
}
.featured-doc-placeholder i {
  width: 54px;
  height: 4px;
  display: block;
  color: var(--teal);
  background: currentColor;
  box-shadow: 0 -10px #ff786a, 0 10px #f4c35d;
}
.featured-doc-placeholder b { font: 800 10px/1 Consolas, monospace; letter-spacing: 0; }
.featured-doc-card > .featured-doc-body {
  min-height: 184px;
  display: flex;
  flex-direction: column;
  padding: 16px;
}
.featured-doc-category { min-height: 18px; display: flex; align-items: center; gap: 7px; }
.featured-doc-card .featured-doc-category > span { color: var(--amber); font-size: 10px; font-weight: 750; }
.featured-doc-card h3 {
  min-height: 43px;
  display: -webkit-box;
  overflow: hidden;
  margin: 7px 0 7px;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}
.featured-doc-card p {
  min-height: 38px;
  line-height: 1.6;
}
.featured-doc-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: auto;
  padding-top: 13px;
  border-top: 1px solid var(--line-soft);
}
.featured-doc-card .featured-doc-meta small { margin: 0; color: #758196; }
.featured-doc-meta time { flex: 0 0 auto; color: #758196; font-size: 10px; }
.latest-doc-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
}
.latest-doc-heading strong { font-size: 13px; }
.latest-doc-heading span { color: #6f7d91; font: 700 9px/1 Consolas, monospace; }
.latest-doc-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px 14px;
  margin-top: 8px;
  border-top: 0;
}
.latest-doc-list a {
  min-height: 45px;
  align-items: center;
  padding: 10px 0;
}

@media (max-width: 820px) {
  .featured-doc-card > .featured-doc-body { min-height: 170px; }
  .latest-doc-list { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .featured-doc-card .featured-doc-media img { transition: none; }
  .featured-doc-card:hover .featured-doc-media img { transform: none; }
}