.page-guides-advanced {
  --adv-rail-width: calc(var(--space-8) * 3);
  --adv-num-width: calc(var(--space-8) * 1.5);
  display: block;
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

/* ---------- 页头 ---------- */
.page-guides-advanced .adv-head {
  padding: var(--space-6) 0 var(--space-8);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-guides-advanced .breadcrumb {
  margin-bottom: var(--space-6);
}

.page-guides-advanced .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

.page-guides-advanced .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: var(--space-2);
  color: var(--color-line);
}

.page-guides-advanced .breadcrumb-item a {
  color: var(--color-ink-soft);
  text-decoration: none;
}

.page-guides-advanced .breadcrumb-item a:hover {
  color: var(--color-primary);
}

.page-guides-advanced .adv-head-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
}

.page-guides-advanced .adv-title {
  margin: var(--space-3) 0 0;
  max-width: 26ch;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-guides-advanced .adv-lede {
  margin: var(--space-4) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-guides-advanced .adv-head-meta {
  align-self: end;
  border-top: var(--border-thick) solid var(--color-ink);
  border-bottom: var(--border-thin) solid var(--color-line);
  padding: var(--space-3) 0;
}

.page-guides-advanced .adv-meta-kicker {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-primary);
}

.page-guides-advanced .adv-meta-list {
  margin: 0;
}

.page-guides-advanced .adv-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-guides-advanced .adv-meta-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-guides-advanced .adv-meta-row dt {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-guides-advanced .adv-meta-row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink);
}

/* ---------- 主体布局 ---------- */
.page-guides-advanced .adv-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  padding: var(--space-6) 0 var(--space-8);
}

.page-guides-advanced .adv-rail {
  align-self: start;
}

.page-guides-advanced .adv-rail-title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-guides-advanced .adv-rail-list {
  display: flex;
  gap: var(--space-3);
  margin: 0;
  padding: 0 0 var(--space-2);
  list-style: none;
  overflow-x: auto;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-guides-advanced .adv-rail-link {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-1);
  padding: var(--space-1) 0;
  white-space: nowrap;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  text-decoration: none;
}

.page-guides-advanced .adv-rail-link .mono {
  font-size: var(--text-xs);
  color: var(--color-primary);
}

.page-guides-advanced .adv-rail-link:hover {
  color: var(--color-ink);
}

.page-guides-advanced .adv-rail-link[aria-current] {
  color: var(--color-ink);
  font-weight: 700;
}

.page-guides-advanced .adv-rail-link[aria-current]::after {
  content: "";
  display: inline-block;
  width: calc(var(--space-1) / 2);
  height: calc(var(--space-1) / 2);
  margin-left: var(--space-1);
  background: var(--color-primary);
}

/* ---------- 章节 ---------- */
.page-guides-advanced .adv-section {
  scroll-margin-top: calc(var(--space-8) + var(--space-4));
}

.page-guides-advanced .adv-section + .adv-section {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-guides-advanced .adv-section-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thick) solid var(--color-ink);
}

.page-guides-advanced .adv-section-index {
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.page-guides-advanced .adv-section-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-guides-advanced .adv-section-lede {
  margin: var(--space-4) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 图文分栏 ---------- */
.page-guides-advanced .adv-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.page-guides-advanced .adv-text p {
  margin: 0 0 var(--space-3);
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-guides-advanced .adv-text p:last-of-type {
  margin-bottom: 0;
}

.page-guides-advanced .adv-check {
  margin: var(--space-6) 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-guides-advanced .adv-check li {
  position: relative;
  padding: var(--space-3) 0 var(--space-3) var(--space-4);
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  color: var(--color-ink);
}

.page-guides-advanced .adv-check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: calc(var(--space-3) + var(--space-1));
  width: calc(var(--space-1) / 2);
  height: calc(var(--space-1) / 2);
  background: var(--color-primary);
}

/* ---------- 图片 ---------- */
.page-guides-advanced .adv-figure {
  margin: 0;
}

.page-guides-advanced .adv-figure--band {
  margin-top: var(--space-6);
}

.page-guides-advanced .adv-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--border-thin) solid var(--color-line);
}

.page-guides-advanced .adv-figure figcaption {
  margin-top: var(--space-2);
  padding-left: var(--space-2);
  border-left: var(--border-thin) solid var(--color-primary);
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

/* ---------- 条目 ---------- */
.page-guides-advanced .adv-entries {
  margin: var(--space-6) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-6);
}

.page-guides-advanced .adv-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-guides-advanced .adv-entry-num {
  margin: 0;
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: var(--leading-heading);
  color: var(--color-primary);
}

.page-guides-advanced .adv-entry-body h3 {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-guides-advanced .adv-entry-body > p {
  margin: 0 0 var(--space-3);
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-guides-advanced .adv-entry-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.page-guides-advanced .adv-entry-foot-note {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

/* ---------- 折叠操作要点 ---------- */
.page-guides-advanced .adv-details {
  margin-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-guides-advanced .adv-details > summary {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) 0;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink);
}

.page-guides-advanced .adv-details > summary::-webkit-details-marker {
  display: none;
}

.page-guides-advanced .adv-details > summary::before {
  content: "+";
  flex: none;
  width: var(--space-3);
  height: var(--space-3);
  line-height: var(--space-3);
  text-align: center;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-guides-advanced .adv-details[open] > summary::before {
  content: "−";
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-guides-advanced .adv-details > summary:focus-visible {
  outline: calc(var(--border-thin) * 2) solid var(--color-focus);
  outline-offset: calc(var(--space-1) / 2);
}

.page-guides-advanced .adv-steps {
  margin: 0 0 var(--space-3);
  padding: 0;
  list-style: none;
  counter-reset: advstep;
}

.page-guides-advanced .adv-steps li {
  position: relative;
  counter-increment: advstep;
  padding: var(--space-2) 0 var(--space-2) var(--space-6);
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-guides-advanced .adv-steps li:last-child {
  border-bottom: 0;
}

.page-guides-advanced .adv-steps li::before {
  content: counter(advstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
}

/* ---------- 版本回溯路径 ---------- */
.page-guides-advanced .adv-path-block {
  margin-top: var(--space-6);
  padding: var(--space-4) 0 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-guides-advanced .adv-path-kicker {
  margin: 0;
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-guides-advanced .adv-path {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
}

.page-guides-advanced .adv-path-node {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-1);
  padding-top: var(--space-4);
  border-top: var(--border-thick) solid var(--color-line);
}

.page-guides-advanced .adv-path-node::before {
  content: "";
  position: absolute;
  top: calc(var(--border-thick) * -1);
  left: 0;
  width: var(--space-2);
  height: var(--space-1);
  background: var(--color-primary);
}

.page-guides-advanced .adv-path-ver {
  font-size: var(--text-base);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-ink);
}

.page-guides-advanced .adv-path-year {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-guides-advanced .adv-path-note {
  margin: var(--space-4) 0 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 适用与边界 ---------- */
.page-guides-advanced .adv-limits {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.page-guides-advanced .adv-limits h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-guides-advanced .adv-limit-col--go {
  padding: var(--space-4);
  background: var(--color-surface-alt);
  border-top: var(--border-thick) solid var(--color-primary);
}

.page-guides-advanced .adv-limit-col--go h3 {
  color: var(--color-primary);
}

.page-guides-advanced .adv-limit-col--hold {
  padding: var(--space-4) 0 0;
  border-top: var(--border-thick) solid var(--color-line);
}

.page-guides-advanced .adv-limit-list {
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
}

.page-guides-advanced .adv-limit-list li {
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-guides-advanced .adv-limit-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

/* ---------- 相邻主题入口 ---------- */
.page-guides-advanced .adv-next-list {
  margin: var(--space-6) 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--border-thick) solid var(--color-ink);
}

.page-guides-advanced .adv-next-link {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-1);
  padding: var(--space-4) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  text-decoration: none;
  color: inherit;
}

.page-guides-advanced .adv-next-num {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-primary);
}

.page-guides-advanced .adv-next-body {
  display: block;
}

.page-guides-advanced .adv-next-title {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-guides-advanced .adv-next-desc {
  display: block;
  margin-top: var(--space-1);
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-guides-advanced .adv-next-link:hover .adv-next-title,
.page-guides-advanced .adv-next-link:focus-visible .adv-next-title {
  color: var(--color-primary);
}

.page-guides-advanced .adv-next-link:focus-visible {
  outline: calc(var(--border-thin) * 2) solid var(--color-focus);
  outline-offset: calc(var(--space-1) / 2);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-guides-advanced .adv-entry {
    grid-template-columns: var(--adv-num-width) minmax(0, 1fr);
    gap: var(--space-6);
  }

  .page-guides-advanced .adv-entry-num {
    padding-top: var(--space-1);
  }

  .page-guides-advanced .adv-path {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-guides-advanced .adv-limits {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-8);
  }

  .page-guides-advanced .adv-next-link {
    grid-template-columns: var(--adv-num-width) minmax(0, 1fr);
    gap: var(--space-4);
    align-items: baseline;
  }
}

@media (min-width: 860px) {
  .page-guides-advanced .adv-title {
    font-size: var(--text-3xl);
  }

  .page-guides-advanced .adv-section-title {
    font-size: var(--text-2xl);
  }

  .page-guides-advanced .adv-head-grid {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: end;
  }

  .page-guides-advanced .adv-split {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-guides-advanced .adv-layout {
    grid-template-columns: var(--adv-rail-width) minmax(0, 1fr);
    gap: var(--space-8);
    padding: var(--space-8) 0 var(--space-8);
  }

  .page-guides-advanced .adv-rail {
    position: sticky;
    top: calc(var(--space-8) + var(--space-4));
  }

  .page-guides-advanced .adv-rail-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0 0 0 var(--space-3);
    border-bottom: 0;
    border-left: var(--border-thin) solid var(--color-line);
  }

  .page-guides-advanced .adv-rail-link {
    display: flex;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-guides-advanced .adv-details > summary::before {
    transition: none;
  }
}
<<<END>>>