.page-features-advanced .page-head {
  padding-top: var(--space-6);
}

.page-features-advanced .page-head__title {
  max-width: 24ch;
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-heading);
}

.page-features-advanced .page-head__lead {
  max-width: var(--measure);
}

.page-features-advanced .adv-opening {
  margin-top: var(--space-8);
}

.page-features-advanced .adv-opening img,
.page-features-advanced .adv-cross__figure img,
.page-features-advanced .adv-end__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-features-advanced .adv-index {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.16em;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.page-features-advanced .adv-h2 {
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin-bottom: var(--space-4);
}

.page-features-advanced .adv-p {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: var(--measure);
  margin-bottom: var(--space-3);
}

.page-features-advanced .adv-p:last-child {
  margin-bottom: 0;
}

.page-features-advanced .adv-split {
  display: grid;
  gap: var(--space-6);
}

.page-features-advanced .adv-split__side {
  border-top: var(--border-thin) solid var(--color-line);
  padding-top: var(--space-4);
}

.page-features-advanced .adv-split__side .emphasis {
  max-width: var(--measure);
  border-left: var(--border-thin) solid var(--color-primary);
  padding-left: var(--space-4);
}

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

.page-features-advanced .adv-reading {
  display: grid;
  border-top: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-features-advanced .adv-lane {
  padding: var(--space-6) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-features-advanced .adv-lane:last-child {
  border-bottom: 0;
}

.page-features-advanced .adv-lane__no {
  font-size: var(--text-xs);
  letter-spacing: 0.22em;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.page-features-advanced .adv-lane__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin-bottom: var(--space-2);
}

.page-features-advanced .adv-lane__def {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-4);
  border-bottom: var(--border-thin) solid var(--color-line);
}

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

.page-features-advanced .adv-point__label {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}

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

.page-features-advanced .adv-cross__grid {
  display: grid;
  gap: var(--space-6);
}

.page-features-advanced .adv-cross__figure {
  margin: 0;
}

.page-features-advanced .adv-cross-item {
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
  margin-bottom: var(--space-6);
}

.page-features-advanced .adv-cross-item:last-child {
  margin-bottom: 0;
}

.page-features-advanced .adv-cross-item__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin-bottom: var(--space-2);
}

.page-features-advanced .adv-cross-item p {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features-advanced .adv-chart-block {
  margin-top: var(--space-8);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-features-advanced .adv-chart__caption {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  letter-spacing: 0.02em;
}

.page-features-advanced .adv-chart {
  display: block;
  width: 100%;
  height: auto;
  margin-top: var(--space-4);
}

.page-features-advanced .adv-chart__axis {
  stroke: var(--color-line);
  stroke-width: 1;
}

.page-features-advanced .adv-chart__line {
  fill: none;
  stroke-width: 1.5;
  stroke-linejoin: round;
  stroke-linecap: round;
}

.page-features-advanced .adv-chart__line--a {
  stroke: var(--color-primary);
}

.page-features-advanced .adv-chart__line--b {
  stroke: color-mix(in srgb, var(--color-primary) 50%, transparent);
}

.page-features-advanced .adv-chart__line--c {
  stroke: color-mix(in srgb, var(--color-primary) 26%, transparent);
}

.page-features-advanced .adv-chart__node circle {
  fill: var(--color-surface);
  stroke: var(--color-accent);
  stroke-width: 1.5;
}

.page-features-advanced .adv-chart__legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-features-advanced .adv-chart__key {
  padding-left: var(--space-3);
  border-left: var(--border-thin) solid var(--color-primary);
}

.page-features-advanced .adv-chart__key--b {
  border-left-color: color-mix(in srgb, var(--color-primary) 50%, transparent);
}

.page-features-advanced .adv-chart__key--c {
  border-left-color: color-mix(in srgb, var(--color-primary) 26%, transparent);
}

.page-features-advanced .adv-conclusion {
  margin-top: var(--space-6);
  padding: var(--space-4) var(--space-4) var(--space-4) var(--space-6);
  background-color: var(--color-highlight);
  border-left: var(--border-thin) solid var(--color-primary);
}

.page-features-advanced .adv-conclusion p {
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  max-width: var(--measure);
}

.page-features-advanced .adv-end {
  color: var(--color-contrast-ink);
}

.page-features-advanced .adv-end__inner {
  display: grid;
  gap: var(--space-6);
}

.page-features-advanced .adv-end__title {
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-heading);
  color: var(--color-contrast-ink);
  margin-bottom: var(--space-3);
}

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

.page-features-advanced .adv-end__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.page-features-advanced .adv-end__links .link-more {
  color: var(--color-contrast-accent);
}

.page-features-advanced .adv-end__figure {
  margin: 0;
}

@media (min-width: 780px) {
  .page-features-advanced .adv-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-features-advanced .adv-split__side {
    border-top: 0;
    padding-top: 0;
  }

  .page-features-advanced .adv-cross__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    gap: var(--space-8);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-features-advanced .adv-reading {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-features-advanced .adv-lane {
    padding: var(--space-6) var(--space-4);
    border-bottom: 0;
    border-right: var(--border-thin) solid var(--color-line);
    transition: background-color 220ms ease-out;
  }

  .page-features-advanced .adv-lane:last-child {
    border-right: 0;
  }

  .page-features-advanced .adv-lane:hover {
    background-color: var(--color-surface-alt);
  }

  .page-features-advanced .adv-end__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    gap: var(--space-8);
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-features-advanced .adv-lane {
    transition: none;
  }
}
<<<END>>>