.page-features-advanced {
  --pa-edge: 8px;
  --pa-hair: 1px;
}

/* ── 子页定位条 ───────────────────────────── */
.page-features-advanced .section--flush-top.subpage-locator {
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

.page-features-advanced .locator-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2) var(--space-4);
}

.page-features-advanced .breadcrumbs {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  min-width: 0;
}

.page-features-advanced .breadcrumbs a {
  color: var(--color-ink-soft);
  text-decoration: none;
}

.page-features-advanced .breadcrumbs a:hover,
.page-features-advanced .breadcrumbs a:focus-visible {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-features-advanced .breadcrumbs [aria-current="page"] {
  color: var(--color-ink);
  font-weight: var(--weight-heading);
}

.page-features-advanced .crumb-sep {
  padding-inline: var(--space-1);
  color: var(--color-line);
}

.page-features-advanced .jump-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--text-sm);
}

.page-features-advanced .jump-list a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 40%, transparent);
  padding-bottom: 2px;
}

.page-features-advanced .jump-list a:hover,
.page-features-advanced .jump-list a:focus-visible {
  border-bottom-color: var(--color-accent);
  color: var(--color-accent);
}

.page-features-advanced .subpage-context {
  margin: var(--space-3) 0 0;
  padding-left: var(--space-3);
  border-left: var(--border-thick) solid var(--color-accent);
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ── 通用标题层级 ─────────────────────────── */
.page-features-advanced h1 {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: 1.1;
  letter-spacing: var(--tracking-heading);
  margin: 0 0 var(--space-3);
}

.page-features-advanced h2 {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: clamp(28px, 4.2vw, var(--text-2xl));
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  margin: 0 0 var(--space-3);
}

.page-features-advanced h3 {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.2;
  letter-spacing: var(--tracking-heading);
  margin: 0 0 var(--space-2);
}

.page-features-advanced h4 {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  line-height: 1.3;
  margin: 0 0 var(--space-1);
}

.page-features-advanced p {
  margin: 0;
}

.page-features-advanced .section-head {
  max-width: var(--measure);
  margin-bottom: var(--space-6);
}

.page-features-advanced .section-head p {
  color: var(--color-ink-soft);
  line-height: var(--leading-body);
}

.page-features-advanced .prose {
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ── 首屏 ─────────────────────────────────── */
.page-features-advanced .advanced-intro {
  padding-block: var(--section-y);
}

.page-features-advanced .intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  align-items: start;
}

.page-features-advanced .intro-main {
  min-width: 0;
}

.page-features-advanced .intro-main .lead {
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: 1.55;
  color: var(--color-ink-soft);
  margin: 0;
}

.page-features-advanced .intro-anchor {
  min-width: 0;
  color: var(--color-primary-ink);
}

.page-features-advanced .intro-anchor .panel-title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  margin: 0 0 var(--space-3);
}

.page-features-advanced .anchor-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-features-advanced .anchor-list li {
  display: grid;
  gap: 2px;
  padding-bottom: var(--space-2);
  border-bottom: var(--pa-hair) solid color-mix(in srgb, var(--color-primary-ink) 32%, transparent);
}

.page-features-advanced .anchor-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-features-advanced .anchor-key {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.1;
}

.page-features-advanced .anchor-plan {
  font-size: var(--text-sm);
  opacity: 0.86;
}

/* ── 三种口径 ─────────────────────────────── */
.page-features-advanced .caliber-figure {
  margin: 0 0 var(--space-6);
  border-radius: 0;
}

.page-features-advanced .caliber-figure img {
  aspect-ratio: 1160 / 420;
  object-fit: cover;
  width: 100%;
  height: auto;
}

.page-features-advanced .caliber-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
}

.page-features-advanced .caliber-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  border-radius: 0;
  border-top: var(--pa-edge) solid var(--color-primary);
  background: var(--color-surface);
  min-width: 0;
}

.page-features-advanced .caliber-card--mid {
  background: var(--color-primary-soft);
}

.page-features-advanced .caliber-card--accent {
  border-top-color: var(--color-accent);
}

.page-features-advanced .dot-strip {
  display: block;
  width: 100%;
  max-width: 148px;
  height: auto;
  margin-bottom: var(--space-1);
}

.page-features-advanced .dot {
  fill: var(--color-primary);
}

.page-features-advanced .dot--off {
  fill: none;
  stroke: var(--color-primary);
  stroke-width: 1.6;
  opacity: 0.4;
}

.page-features-advanced .caliber-card--accent .dot {
  fill: var(--color-accent);
}

.page-features-advanced .caliber-card--accent .dot--off {
  stroke: var(--color-accent);
}

.page-features-advanced .caliber-q {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-features-advanced .caliber-eg {
  margin-top: auto;
  padding-top: var(--space-2);
  border-top: var(--pa-hair) solid var(--color-line);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features-advanced .caliber-eg .num {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

/* ── 分组与跨期对照 ───────────────────────── */
.page-features-advanced .compare-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  align-items: start;
}

.page-features-advanced .compare-text {
  min-width: 0;
}

.page-features-advanced .compare-text > h3:not(:first-child) {
  margin-top: var(--space-6);
}

.page-features-advanced .compare-sub {
  padding-top: var(--space-4);
  border-top: var(--pa-hair) solid var(--color-line);
}

.page-features-advanced .point-list {
  display: grid;
  gap: var(--space-4);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-features-advanced .point-list > li {
  padding-left: var(--space-3);
  border-left: var(--border-thick) solid var(--color-primary);
  min-width: 0;
}

.page-features-advanced .point-list > li p {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features-advanced .point-list > .point-list-alert {
  border-left-color: var(--color-accent);
}

.page-features-advanced .compare-figure {
  margin: 0;
  border-radius: 0;
  min-width: 0;
}

.page-features-advanced .compare-figure img {
  aspect-ratio: 960 / 540;
  object-fit: cover;
  width: 100%;
  height: auto;
}

/* ── 四步使用顺序 ─────────────────────────── */
.page-features-advanced .steps-section .steps-head {
  max-width: var(--measure);
  margin-bottom: var(--space-6);
}

.page-features-advanced .steps-list {
  list-style: none;
  counter-reset: pa-step;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-features-advanced .steps-list > li {
  counter-increment: pa-step;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: var(--space-3);
  row-gap: var(--space-1);
  padding-block: var(--space-4);
  border-top: var(--pa-hair) solid var(--color-line);
  min-width: 0;
}

.page-features-advanced .steps-list > li::before {
  content: counter(pa-step, decimal-leading-zero);
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.1;
  color: var(--color-primary);
}

.page-features-advanced .steps-list > li h3 {
  margin: 0;
  font-size: var(--text-lg);
}

.page-features-advanced .steps-list > li p {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ── 深墨注意事项 ─────────────────────────── */
.page-features-advanced .notes-section {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-features-advanced .notes-head {
  max-width: var(--measure);
  margin-bottom: var(--space-6);
}

.page-features-advanced .notes-head h2 {
  color: var(--color-contrast-ink);
}

.page-features-advanced .notes-head p {
  color: color-mix(in srgb, var(--color-contrast-ink) 78%, transparent);
  line-height: var(--leading-body);
}

.page-features-advanced .notes-figure {
  margin: 0 0 var(--space-6);
  border-radius: 0;
}

.page-features-advanced .notes-figure img {
  aspect-ratio: 960 / 360;
  object-fit: cover;
  width: 100%;
  height: auto;
  opacity: 0.9;
}

.page-features-advanced .notes-figure .media-frame-caption {
  color: color-mix(in srgb, var(--color-contrast-ink) 76%, transparent);
}

.page-features-advanced .caution-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
}

.page-features-advanced .caution-list > li {
  padding: var(--space-4);
  border-left: var(--pa-edge) solid var(--color-contrast-accent);
  background: color-mix(in srgb, var(--color-contrast-ink) 6%, transparent);
  min-width: 0;
}

.page-features-advanced .caution-list h3 {
  color: var(--color-contrast-ink);
  font-size: var(--text-lg);
  margin: 0 0 var(--space-2);
}

.page-features-advanced .caution-list p {
  color: color-mix(in srgb, var(--color-contrast-ink) 82%, transparent);
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

/* ── 结尾出口 ─────────────────────────────── */
.page-features-advanced .final-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  align-items: start;
}

.page-features-advanced .final-lead {
  min-width: 0;
}

.page-features-advanced .final-lead .lead {
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  margin: 0;
}

.page-features-advanced .exit-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
}

.page-features-advanced .exit-list > li {
  display: grid;
  gap: 4px;
  padding: var(--space-3) 0 var(--space-3) var(--space-3);
  border-left: var(--border-thick) solid var(--color-primary);
  min-width: 0;
}

.page-features-advanced .exit-list > li:nth-child(2) {
  border-left-color: var(--color-accent);
}

.page-features-advanced .exit-link {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  color: var(--color-primary);
  text-decoration: none;
  overflow-wrap: break-word;
}

.page-features-advanced .exit-list > li:nth-child(2) .exit-link {
  color: var(--color-accent);
}

.page-features-advanced .exit-link:hover,
.page-features-advanced .exit-link:focus-visible {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-features-advanced .exit-note {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

/* ── 响应式 ───────────────────────────────── */
@media (min-width: 721px) {
  .page-features-advanced .caliber-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-features-advanced .caution-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 901px) {
  .page-features-advanced .intro-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 3fr);
    gap: var(--space-8);
  }

  .page-features-advanced .compare-grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
    gap: var(--space-8);
  }

  .page-features-advanced .final-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--space-8);
  }
}

@media (max-width: 900px) {
  .page-features-advanced .steps-list > li::before {
    grid-row: auto;
  }

  .page-features-advanced .steps-list > li {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-features-advanced * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}
<<<END>>>