/* roulang page: index */
:root {
  --bg: #F3F6FA;
  --bg-alt: #E7EEF5;
  --card: #FFFFFF;
  --text: #1B2836;
  --muted: #5E7082;
  --line: #D5E0EA;
  --primary: #3E6F8E;
  --primary-deep: #1E455C;
  --accent: #B86A58;
  --shadow: 0 10px 28px rgba(30,69,92,.08);
  --shadow-hover: 0 16px 32px rgba(30,69,92,.14);
  --radius: 12px;
  --radius-btn: 8px;
  --container: 1120px;
  --header-h: 74px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
}
img { max-width: 100%; display: block; border: 0; }
button, input, select, textarea { font-family: inherit; font-size: 16px; color: var(--text); }
h1, h2, h3, p, ul, ol, dl, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--primary-deep); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.nav-wrap { min-height: var(--header-h); display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--primary-deep); text-decoration: none; font-weight: 700; line-height: 1.35; }
.brand:hover { color: var(--primary-deep); }
.brand-mark { width: 34px; height: 34px; flex: 0 0 34px; }
.brand-name { font-size: 16px; }
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 24px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(184,106,88,.14);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  white-space: nowrap;
}
.badge-blue { background: rgba(62,111,142,.12); color: var(--primary-deep); }
.nav-toggle {
  display: none;
  border: 1px solid var(--primary);
  background: #fff;
  color: var(--primary-deep);
  border-radius: var(--radius-btn);
  min-height: 40px;
  padding: 0 14px;
  cursor: pointer;
}
.nav-toggle:hover { background: var(--bg-alt); }
.site-nav ul { display: flex; align-items: center; gap: 6px; margin: 0; }
.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 12px;
  color: var(--text);
  text-decoration: none;
  border-radius: 8px;
}
.site-nav a:hover { color: var(--primary-deep); background: var(--bg); }
.site-nav a.is-active { color: var(--primary-deep); box-shadow: inset 0 -2px 0 var(--accent); border-radius: 0; background: transparent; }
.crumbbar { background: #fff; border-bottom: 1px solid var(--line); }
.crumbs { padding: 10px 0 12px; }
.crumbs ol { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; color: var(--muted); font-size: 13px; }
.crumbs li { display: inline-flex; align-items: center; gap: 8px; }
.band { padding: 72px 0; }
.band-alt { background: var(--bg-alt); }
.section-head { margin-bottom: 22px; max-width: 760px; }
.section-head h2 { font-size: 26px; line-height: 1.4; color: var(--primary-deep); font-weight: 700; text-align: left; }
.section-head p, .lead { margin-top: 10px; color: var(--text); }
h1 { font-size: 38px; line-height: 1.28; color: var(--primary-deep); font-weight: 700; text-align: left; }
h3 { font-size: 18px; line-height: 1.5; color: var(--primary-deep); font-weight: 700; }
.sub { margin-top: 8px; color: var(--muted); font-size: 15px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--primary);
  text-decoration: none;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.btn:active { transform: translateY(1px); }
a.btn-primary, .btn-primary { background: var(--primary); color: #fff; }
a.btn-primary:hover, .btn-primary:hover { background: var(--primary-deep); border-color: var(--primary-deep); color: #fff; }
a.btn-ghost, .btn-ghost { background: transparent; color: var(--primary-deep); }
a.btn-ghost:hover, .btn-ghost:hover { background: var(--bg-alt); color: var(--primary-deep); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.card, .info-box, .metric, .node, .entry-main, .entry-side a, .news-feature, .assure, .qa, .article-row, .faq-item, .week, .form-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card, .info-box, .news-feature, .assure, .form-card, .entry-main { padding: 22px; }
.card { transition: transform .2s ease, box-shadow .2s ease; }
.card:hover, .entry-main:hover, .news-feature:hover, .article-row:hover, .week:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}
.stack { display: grid; gap: 16px; }
.point-bar {
  margin-top: 16px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr .8fr;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.point-bar div { padding: 16px 18px; border-right: 1px solid var(--line); }
.point-bar div:last-child { border-right: 0; }
.point-bar strong { display: block; color: var(--primary-deep); }
.point-bar span { color: var(--muted); font-size: 14px; }
.info-box { border-top: 3px solid var(--accent); }
.info-top { display: flex; justify-content: space-between; gap: 8px; align-items: center; margin-bottom: 12px; }
.info-box dl { margin: 0; }
.info-row, .def-row, .cmp-row { display: grid; grid-template-columns: 92px 1fr; gap: 10px; padding: 9px 0; border-top: 1px solid var(--line); }
.info-row dt, .def-row dt, .cmp-row dt { color: var(--muted); }
.info-row dd, .def-row dd, .cmp-row dd { margin: 0; }
.stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
.stat { background: var(--bg); border-radius: 10px; padding: 10px 12px; }
.stat b { display: block; color: var(--accent); font-size: 26px; line-height: 1.2; }
.stat span { color: var(--muted); font-size: 13px; }
.metric-row { margin-top: 16px; display: flex; gap: 16px; }
.metric { flex: 1; padding: 16px 18px; }
.metric:nth-child(1) { flex: 1.45; }
.metric:nth-child(2) { flex: 1.05; }
.metric:nth-child(3) { flex: .8; }
.metric b { display: block; font-size: 28px; color: var(--accent); line-height: 1.2; }
.metric span { color: var(--muted); }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.cmp-card h3 { margin-bottom: 8px; }
.pick { border-color: rgba(184,106,88,.45); }
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; position: relative; }
.node { padding: 18px; position: relative; }
.node-index { color: var(--accent); font-weight: 700; font-size: 13px; }
.node p { margin-top: 8px; color: var(--text); }
.entry-layout { display: grid; grid-template-columns: 1.5fr .9fr; gap: 16px; }
.entry-side { display: grid; gap: 16px; }
.entry-side a, .article-row {
  display: block;
  padding: 16px 18px;
  color: var(--text);
  text-decoration: none;
}
.entry-side a:hover, .article-row:hover { color: var(--primary-deep); }
.cover-img { width: 100%; aspect-ratio: 16/10; object-fit: cover; border-radius: var(--radius); border: 1px solid var(--line); }
.scene-block + .scene-block { margin-top: 28px; }
.scene-copy h3 { margin-bottom: 8px; }
.defs { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 8px 22px 12px; }
.news-item { display: grid; grid-template-columns: 108px 1fr; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.news-item:last-child { border-bottom: 0; }
.news-item time { color: var(--accent); font-size: 14px; }
.news-item a { font-weight: 700; }
.news-item p { color: var(--muted); font-size: 15px; }
.assure-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 16px; }
.assure-full { grid-column: 1 / -1; }
.icon-dot { width: 36px; height: 36px; border-radius: 50%; background: rgba(62,111,142,.12); color: var(--primary-deep); display: inline-flex; align-items: center; justify-content: center; font-weight: 700; margin-bottom: 8px; }
.qa-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 16px; }
.qa { padding: 18px; }
.qa + .qa { margin-top: 0; }
.qa h3 { font-size: 17px; margin-bottom: 6px; }
.article-list { display: grid; gap: 12px; }
.article-row { grid-template-columns: auto 1fr; }
.idx { color: var(--accent); font-weight: 700; margin-right: 8px; }
.faq-item { overflow: hidden; }
.faq-item + .faq-item { margin-top: 12px; }
.faq-q {
  width: 100%;
  text-align: left;
  background: #fff;
  border: 0;
  padding: 16px 18px;
  color: var(--primary-deep);
  font-weight: 700;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.faq-q:hover { color: var(--primary); }
.faq-a { background: var(--bg-alt); padding: 0 18px 16px; color: var(--text); }
.faq-item [hidden] { display: none; }
.calendar { display: grid; gap: 12px; }
.week { padding: 16px 18px; display: grid; grid-template-columns: 180px 1fr auto; gap: 12px; align-items: center; }
.week p { color: var(--muted); }
.form-card { max-width: 820px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field-full { grid-column: 1 / -1; }
label { color: var(--primary-deep); font-weight: 700; }
input, select, textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius-btn);
  background: #fff;
  padding: 8px 12px;
}
textarea { min-height: 120px; resize: vertical; }
.is-error { border-color: var(--accent) !important; }
.form-tip { color: var(--accent); min-height: 1.5em; }
.form-ok { background: rgba(62,111,142,.1); color: var(--primary-deep); border-radius: 8px; padding: 12px 14px; margin-bottom: 12px; }
.agree { display: flex; gap: 8px; align-items: flex-start; margin: 4px 0 12px; }
.agree input { width: 18px; height: 18px; min-height: 18px; margin-top: 4px; }
.site-footer { background: var(--primary-deep); color: #E7EEF5; padding: 42px 0 28px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr .8fr .8fr; gap: 24px; }
.site-footer a { color: #fff; text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; text-underline-offset: 3px; }
.site-footer h2 { font-size: 18px; color: #fff; margin-bottom: 8px; }
.site-footer p, .site-footer li { color: #D5E0EA; }
.site-footer ul { display: grid; gap: 6px; }
.copy { margin-top: 22px; padding-top: 14px; border-top: 1px solid rgba(255,255,255,.16); color: #D5E0EA; font-size: 14px; }
@media (min-width: 64em) {
  body { font-size: 17px; }
}
@media (max-width: 1024px) {
  .entry-layout, .qa-grid, .assure-grid, .foot-grid { grid-template-columns: 1fr 1fr; }
  .assure-full { grid-column: 1 / -1; }
  .point-bar { grid-template-columns: 1fr 1fr; }
  .timeline { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .band { padding: 40px 0; }
  .nav-toggle { display: inline-flex; }
  .nav-wrap { flex-wrap: wrap; padding: 10px 0; }
  .site-nav { display: none; width: 100%; padding-bottom: 10px; }
  .site-nav.is-open { display: block; }
  .site-nav ul { flex-direction: column; align-items: stretch; }
  .metric-row, .form-grid, .entry-layout, .qa-grid, .assure-grid, .foot-grid, .week { grid-template-columns: 1fr; display: grid; }
  .metric-row { display: grid; }
  .metric { flex: auto; }
  .news-item { grid-template-columns: 1fr; gap: 2px; }
  .point-bar { grid-template-columns: 1fr; }
  .point-bar div { border-right: 0; border-bottom: 1px solid var(--line); }
  h1 { font-size: 28px; }
  h2, .section-head h2 { font-size: 24px; }
}
@media (max-width: 520px) {
  .container { width: min(var(--container), calc(100% - 28px)); }
  .brand-name { font-size: 14px; }
  .hero-actions, .btn { width: 100%; }
  .info-row, .def-row, .cmp-row { grid-template-columns: 1fr; gap: 2px; }
  .stat b, .metric b { font-size: 24px; }
  .timeline { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .card, .btn, .entry-main, .news-feature, .article-row, .week { transition: none; }
}

/* roulang page: category1 */
:root {
 --bg: #F3F6FA;
 --bg-alt: #E7EEF5;
 --card: #FFFFFF;
 --text: #1B2836;
 --muted: #5E7082;
 --line: #D5E0EA;
 --primary: #3E6F8E;
 --primary-deep: #1E455C;
 --accent: #B86A58;
 --shadow: 0 10px 28px rgba(30,69,92,.08);
 --shadow-hover: 0 16px 32px rgba(30,69,92,.14);
 --radius: 12px;
 --radius-btn: 8px;
 --container: 1120px;
 --header-h: 74px;
}
/* roulang page: category1 */
html { scroll-behavior: smooth; }
*, *::before, *::after { box-sizing: border-box; }
body {
 margin: 0;
 background: var(--bg);
 color: var(--text);
 font-family: "PingFang SC", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
 font-size: 16px;
 line-height: 1.75;
}
img { max-width: 100%; display: block; border: 0; }
button, input, select, textarea { font-family: inherit; font-size: 16px; color: var(--text); }
button { cursor: pointer; }
a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--primary-deep); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
 outline: 2px solid var(--primary);
 outline-offset: 2px;
}
p { margin: 0 0 10px; max-width: 68ch; }
h1, h2, h3 { margin: 0; text-align: left; font-weight: 700; color: var(--primary-deep); }
h1 { font-size: 36px; line-height: 1.35; margin-bottom: 10px; }
h2 { font-size: 26px; line-height: 1.4; }
h3 { font-size: 20px; line-height: 1.45; margin-bottom: 8px; }
ul, ol { margin: 0; padding: 0; }
.container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
.site-header {
 position: sticky;
 top: 0;
 z-index: 40;
 background: #fff;
 border-bottom: 1px solid var(--line);
}
.nav-wrap { min-height: var(--header-h); display: flex; align-items: center; justify-content: space-between; gap: 18px; position: relative; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--primary-deep); text-decoration: none; font-weight: 700; line-height: 1.35; max-width: calc(100% - 88px); }
.brand:hover { color: var(--primary-deep); }
.brand-mark { width: 34px; height: 34px; flex: 0 0 34px; }
.brand-name { font-size: 16px; }
.badge {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 min-height: 24px;
 padding: 0 10px;
 border-radius: 999px;
 background: rgba(184,106,88,.14);
 color: var(--accent);
 font-size: 12px;
 font-weight: 700;
 white-space: nowrap;
}
.badge-blue { background: rgba(62,111,142,.12); color: var(--primary-deep); }
.nav-toggle {
 display: none;
 border: 1px solid var(--primary);
 background: #fff;
 color: var(--primary-deep);
 border-radius: var(--radius-btn);
 min-height: 40px;
 padding: 0 14px;
}
.nav-toggle:hover { background: var(--bg-alt); }
.nav-toggle:active { transform: translateY(1px); }
.site-nav ul { display: flex; align-items: center; gap: 6px; list-style: none; margin: 0; }
.site-nav a {
 display: inline-flex;
 align-items: center;
 min-height: 42px;
 padding: 0 12px;
 color: var(--text);
 text-decoration: none;
 border-radius: 8px;
}
.site-nav a:hover { color: var(--primary-deep); background: var(--bg); }
.site-nav a.is-active { color: var(--primary-deep); box-shadow: inset 0 -2px 0 var(--accent); border-radius: 0; background: transparent; }
.crumb-bar { background: #fff; border-bottom: 1px solid var(--line); }
.crumb-inner { min-height: 52px; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 8px 0; }
.crumb { display: flex; flex-wrap: wrap; gap: 0; list-style: none; font-size: 14px; color: var(--muted); }
.crumb li { display: inline-flex; align-items: center; }
.crumb li + li::before { content: "/"; margin: 0 8px; color: var(--line); }
.crumb a { color: var(--primary); text-decoration: none; }
.crumb a:hover { color: var(--primary-deep); text-decoration: underline; }
.crumb [aria-current="page"] { color: var(--primary-deep); font-weight: 700; }
.section { padding: 72px 0; }
.section.alt { background: var(--bg-alt); }
.section-head { margin-bottom: 22px; max-width: 760px; }
.section-head p, .lead { margin-top: 10px; color: var(--text); }
.head-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.page-head { padding-top: 48px; }
.btn {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 min-height: 44px;
 padding: 0 18px;
 border-radius: var(--radius-btn);
 border: 1px solid var(--primary);
 text-decoration: none;
 background: transparent;
 color: var(--primary-deep);
 transition: background .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.btn:hover { background: var(--bg-alt); color: var(--primary-deep); }
.btn:active { transform: translateY(1px); }
a.btn-primary, .btn-primary { background: var(--primary); color: #fff; }
a.btn-primary:hover, .btn-primary:hover { background: var(--primary-deep); border-color: var(--primary-deep); color: #fff; }
a.btn-ghost, .btn-ghost { background: #fff; color: var(--primary-deep); }
a.btn-ghost:hover, .btn-ghost:hover { background: var(--bg-alt); color: var(--primary-deep); }
.card, .entry-card, .toc, .more-bar, .qa, .article-row, .faq-item {
 background: var(--card);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
}
.entry-card, .qa, .more-bar { padding: 22px; }
.entry-card { transition: transform .2s ease, box-shadow .2s ease; margin-bottom: 16px; }
.entry-card:hover, .article-row:hover, .more-bar:hover {
 transform: translateY(-2px);
 box-shadow: var(--shadow-hover);
}
.entry-card:active { transform: translateY(0); }
.entry-list { display: block; }
.entry-layout { display: grid; grid-template-columns: 220px 1fr; gap: 18px; align-items: center; }
.entry-meta { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 8px; }
.entry-meta time { color: var(--accent); font-size: 14px; }
.entry-card p { color: var(--text); font-size: 16px; }
.entry-card .btn { margin-top: 8px; }
.cover {
 width: 100%;
 aspect-ratio: 16/10;
 border-radius: var(--radius);
 border: 1px solid var(--line);
 background: #E7EEF5;
 position: relative;
 overflow: hidden;
}
.cover span { position: absolute; display: block; }
.cover-a span:first-child { width: 58%; height: 70%; left: 10%; top: 15%; background: #fff; border: 1px solid var(--line); border-radius: 8px; }
.cover-a span:last-child { width: 22%; height: 22%; right: 10%; bottom: 14%; background: rgba(184,106,88,.35); border-radius: 999px; }
.cover-b span:first-child { width: 34%; height: 78%; left: 12%; top: 11%; background: rgba(62,111,142,.22); border-radius: 8px; }
.cover-b span:last-child { width: 40%; height: 46%; right: 10%; bottom: 16%; background: #fff; border: 1px solid var(--line); border-radius: 8px; }
.cover-c span:first-child { width: 72%; height: 18%; left: 14%; top: 28%; background: #fff; border-radius: 999px; }
.cover-c span:last-child { width: 48%; height: 18%; left: 14%; top: 54%; background: rgba(62,111,142,.28); border-radius: 999px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
 border: 1px solid var(--line);
 background: #fff;
 color: var(--primary-deep);
 border-radius: 999px;
 min-height: 36px;
 padding: 0 14px;
 transition: border-color .2s ease, background .2s ease, color .2s ease;
}
.chip:hover { border-color: var(--primary); color: var(--primary); }
.chip.is-on { border-color: var(--accent); color: var(--accent); background: rgba(184,106,88,.12); }
.field label { display: block; margin-bottom: 6px; color: var(--muted); font-size: 14px; }
select {
 width: 100%;
 min-height: 44px;
 border: 1px solid var(--line);
 border-radius: var(--radius-btn);
 padding: 8px 12px;
 background: #fff;
}
select:hover { border-color: var(--primary); }
.filter-bar { margin-top: 4px; }
.toc { padding: 8px 16px 12px; position: sticky; top: 92px; }
.toc-title { font-size: 14px; color: var(--muted); padding: 12px 0 4px; }
.toc a {
 display: block;
 padding: 10px 0;
 border-top: 1px solid var(--line);
 color: var(--primary-deep);
 text-decoration: none;
 font-weight: 700;
}
.toc a:hover { color: var(--primary); }
.toc a[hidden] { display: none; }
.more-bar { display: flex; justify-content: space-between; align-items: center; gap: 18px; }
.scope-grid h3 { margin-bottom: 4px; }
.def-row { display: grid; grid-template-columns: 92px 1fr; gap: 10px; padding: 10px 0; border-top: 1px solid var(--line); }
.def-row dt { color: var(--muted); margin: 0; }
.def-row dd { margin: 0; }
.article-list { display: grid; gap: 12px; }
.article-row {
 display: grid;
 grid-template-columns: 108px 1fr;
 gap: 12px;
 align-items: center;
 padding: 16px 18px;
 color: var(--text);
 text-decoration: none;
 transition: transform .2s ease, box-shadow .2s ease;
}
.article-row time { color: var(--accent); font-size: 14px; }
.article-row span { font-weight: 700; color: var(--primary-deep); }
.article-row:hover span { color: var(--primary); }
.qa-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.qa h3 { font-size: 17px; }
.faq-item { overflow: hidden; }
.faq-item + .faq-item { margin-top: 12px; }
.faq-q {
 width: 100%;
 text-align: left;
 background: #fff;
 border: 0;
 padding: 16px 18px;
 color: var(--primary-deep);
 font-weight: 700;
 display: flex;
 justify-content: space-between;
 gap: 12px;
 align-items: center;
}
.faq-q::after { content: "+"; color: var(--accent); font-size: 20px; line-height: 1; }
.faq-q[aria-expanded="true"]::after { content: "–"; }
.faq-q:hover { color: var(--primary); }
.faq-a { background: var(--bg-alt); padding: 0 18px 16px; color: var(--text); }
.faq-item [hidden] { display: none; }
.site-footer { background: var(--primary-deep); color: #E7EEF5; padding: 48px 0 28px; }
.site-footer h2 { color: #fff; font-size: 18px; margin-bottom: 10px; }
.site-footer p { color: #E7EEF5; max-width: none; }
.site-footer a { color: #fff; }
.site-footer a:hover { color: #fff; }
.site-footer ul { list-style: none; }
.site-footer li + li { margin-top: 6px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr .8fr .8fr; gap: 24px; }
.copy { margin-top: 22px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.15); color: #D5E0EA; font-size: 14px; }
@media (max-width: 1024px) {
 .toc { position: static; margin-bottom: 16px; }
 .entry-layout { grid-template-columns: 180px 1fr; }
}
@media (max-width: 768px) {
 .section { padding: 40px 0; }
 .page-head { padding-top: 32px; }
 h1 { font-size: 28px; }
 h2 { font-size: 24px; }
 .nav-toggle { display: inline-flex; }
 .site-nav { display: none; position: absolute; left: 0; right: 0; top: 100%; background: #fff; border-bottom: 1px solid var(--line); padding: 8px 0 14px; }
 .site-nav.is-open { display: block; }
 .site-nav ul { flex-direction: column; align-items: stretch; }
 .site-nav a { width: 100%; }
 .crumb-inner { align-items: flex-start; flex-direction: column; }
 .entry-layout, .qa-grid, .foot-grid { grid-template-columns: 1fr; }
 .more-bar { flex-direction: column; align-items: flex-start; }
 .article-row { grid-template-columns: 92px 1fr; }
}
@media (max-width: 520px) {
 .container { width: min(var(--container), calc(100% - 28px)); }
 .brand-name { font-size: 14px; }
 .def-row { grid-template-columns: 72px 1fr; }
 .article-row { grid-template-columns: 1fr; gap: 4px; }
 .entry-card, .qa, .more-bar { padding: 16px; }
}