.page-features-advanced {
  --adv-seam: 3px;
  display: block;
}

/* ============ 页面上下文区 ============ */
.page-features-advanced .adv-intro {
  background: var(--color-surface);
  padding: var(--space-6) 0 var(--space-8);
  border-bottom: var(--border-thick) solid var(--color-primary);
}

.page-features-advanced .adv-intro .breadcrumb {
  margin-bottom: var(--space-4);
}

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

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

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

.page-features-advanced .adv-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* 深色数据夹层 */
.page-features-advanced .adv-facts {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-left: var(--border-thick) solid var(--color-contrast-accent);
  padding: var(--space-4);
}

.page-features-advanced .adv-facts__label {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
  margin-bottom: var(--space-3);
}

.page-features-advanced .adv-facts__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-features-advanced .adv-fact {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-features-advanced .adv-fact__num {
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.1;
  color: var(--color-contrast-accent);
}

.page-features-advanced .adv-fact__text {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.84;
}

/* ============ 通用区块头 ============ */
.page-features-advanced .adv-section__head {
  max-width: var(--measure);
  margin-bottom: var(--space-6);
}

.page-features-advanced .adv-section__head h2 {
  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);
  margin: var(--space-2) 0 var(--space-2);
}

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

/* ============ 双栏对照 ============ */
.page-features-advanced .adv-compare {
  background: var(--color-surface-alt);
  padding: var(--space-8) 0;
  border-bottom: var(--border-thick) solid var(--color-line);
}

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

.page-features-advanced .adv-cols {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-features-advanced .adv-cols__pane--player {
  background: var(--color-surface);
  padding: var(--space-4);
}

.page-features-advanced .adv-cols__pane--team {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: var(--space-4);
}

.page-features-advanced .adv-cols__badge {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.16em;
  padding: 2px var(--space-1);
  border: var(--border-thin) solid currentColor;
  margin-bottom: var(--space-2);
}

.page-features-advanced .adv-cols__pane--player .adv-cols__badge {
  color: var(--color-primary);
}

.page-features-advanced .adv-cols__pane--team .adv-cols__badge {
  color: var(--color-contrast-accent);
}

.page-features-advanced .adv-cols__pane-head h3 {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  margin-bottom: var(--space-1);
}

.page-features-advanced .adv-cols__pane-head p {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
  margin-bottom: var(--space-3);
}

.page-features-advanced .adv-cols__pane--team .adv-cols__pane-head p {
  color: var(--color-contrast-ink);
  opacity: 0.74;
}

.page-features-advanced .adv-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-features-advanced .adv-entry {
  padding: var(--space-3) 0;
  border-top: var(--border-thin) solid var(--color-line);
  transition: transform 180ms ease, border-color 180ms ease;
}

.page-features-advanced .adv-entry:first-child {
  border-top-color: var(--color-ink);
  border-top-width: var(--border-thick);
}

.page-features-advanced .adv-cols__pane--team .adv-entry {
  border-top-color: var(--color-contrast-line);
}

.page-features-advanced .adv-cols__pane--team .adv-entry:first-child {
  border-top-color: var(--color-contrast-accent);
}

.page-features-advanced .adv-entry:hover {
  transform: translateX(4px);
}

.page-features-advanced .adv-entry__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  margin-bottom: var(--space-1);
}

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

.page-features-advanced .adv-cols__pane--team .adv-entry__body {
  color: var(--color-contrast-ink);
  opacity: 0.82;
}

.page-features-advanced .adv-entry__meta {
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  line-height: 1.2;
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

.page-features-advanced .adv-cols__pane--team .adv-entry__meta {
  color: var(--color-contrast-accent);
  opacity: 0.9;
}

.page-features-advanced .adv-compare__quote {
  margin-top: var(--space-6);
}

/* ============ 三步流程 ============ */
.page-features-advanced .adv-steps-section {
  background: var(--color-surface);
  padding: var(--space-8) 0;
}

.page-features-advanced .adv-steps {
  border-bottom: var(--border-thick) solid var(--color-ink);
}

.page-features-advanced .adv-step {
  border-top: var(--border-thick) solid var(--color-ink);
}

.page-features-advanced .adv-step__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1) var(--space-3);
  padding: var(--space-3) 0;
  cursor: pointer;
  list-style: none;
}

.page-features-advanced .adv-step__summary::-webkit-details-marker {
  display: none;
}

.page-features-advanced .adv-step__num {
  flex: 0 0 auto;
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.1;
  color: var(--color-primary);
}

.page-features-advanced .adv-step__title {
  flex: 1 1 auto;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-features-advanced .adv-step__time {
  flex: 0 0 auto;
  margin-left: auto;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-features-advanced .adv-step[open] .adv-step__num {
  color: var(--color-accent);
}

.page-features-advanced .adv-step__body {
  max-width: var(--measure);
  padding-bottom: var(--space-4);
}

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

.page-features-advanced .adv-step__body p + p {
  margin-top: var(--space-2);
}

.page-features-advanced .adv-steps__figure {
  margin-top: var(--space-6);
  max-width: 720px;
}

/* ============ 适用场景 + 筛选 ============ */
.page-features-advanced .adv-scenes {
  background: var(--color-surface-alt);
  padding: var(--space-8) 0;
  border-top: var(--border-thick) solid var(--color-line);
}

.page-features-advanced .adv-scenes .filter-bar {
  margin-bottom: var(--space-4);
}

.page-features-advanced .adv-scene-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.page-features-advanced .adv-scene:last-child {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-features-advanced .adv-scene__tag {
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.14em;
  color: var(--color-primary);
}

.page-features-advanced .adv-scene__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin-bottom: var(--space-1);
}

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

.page-features-advanced .adv-scene__meta {
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

.page-features-advanced .adv-follow {
  align-self: start;
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 6px var(--space-2);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
  line-height: 1.2;
  cursor: pointer;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-features-advanced .adv-follow[aria-pressed="true"] {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.page-features-advanced .adv-follow__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: var(--border-thin) solid currentColor;
  background: transparent;
}

.page-features-advanced .adv-follow[aria-pressed="true"] .adv-follow__dot {
  background: currentColor;
}

/* ============ 对照表 ============ */
.page-features-advanced .adv-versus {
  background: var(--color-surface);
  padding: var(--space-8) 0;
}

.page-features-advanced .adv-table-wrap {
  overflow-x: auto;
  border-top: var(--border-thick) solid var(--color-ink);
  border-bottom: var(--border-thick) solid var(--color-ink);
}

.page-features-advanced .adv-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: var(--text-base);
}

.page-features-advanced .adv-table caption {
  text-align: left;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  padding: var(--space-2) 0;
}

.page-features-advanced .adv-table th,
.page-features-advanced .adv-table td {
  text-align: left;
  vertical-align: top;
  padding: var(--space-3) var(--space-2);
  line-height: var(--leading-body);
}

.page-features-advanced .adv-table thead th {
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thick) solid var(--color-line);
}

.page-features-advanced .adv-table thead th:nth-child(3) {
  color: var(--color-primary);
}

.page-features-advanced .adv-table tbody tr {
  border-top: var(--border-thin) solid var(--color-line);
}

.page-features-advanced .adv-table tbody th {
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-features-advanced .adv-table tbody td {
  color: var(--color-ink-soft);
}

/* ============ 常见误用 ============ */
.page-features-advanced .adv-pitfalls {
  background: var(--color-surface-deep);
  padding: var(--space-8) 0;
}

.page-features-advanced .adv-pitfalls__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-features-advanced .adv-pitfall {
  padding: var(--space-4) 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-features-advanced .adv-pitfall:last-child {
  border-bottom: var(--border-thin) solid var(--color-line);
}

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

.page-features-advanced .adv-pitfall__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin-bottom: var(--space-1);
}

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

.page-features-advanced .adv-pitfall__fix {
  margin-top: var(--space-2);
  max-width: var(--measure);
  padding: var(--space-2);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink);
  background: var(--color-highlight);
  border-left: var(--border-thick) solid var(--color-accent);
}

.page-features-advanced .adv-pitfall__fix strong {
  color: var(--color-accent);
  margin-right: var(--space-1);
}

.page-features-advanced .adv-pitfall__fix a {
  color: var(--color-primary);
  text-decoration: underline;
}

/* ============ 收尾出口 ============ */
.page-features-advanced .adv-exit {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: var(--space-8) 0;
}

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

.page-features-advanced .adv-exit h2 {
  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-contrast-ink);
  margin: var(--space-2) 0 var(--space-3);
}

.page-features-advanced .adv-exit__body > p {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.84;
  max-width: var(--measure);
}

.page-features-advanced .adv-exit .eyebrow {
  color: var(--color-contrast-accent);
}

.page-features-advanced .adv-exit__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.page-features-advanced .adv-exit .btn--ghost {
  color: var(--color-contrast-ink);
  border-color: var(--color-contrast-line);
  background: transparent;
}

.page-features-advanced .adv-exit__contact {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  letter-spacing: 0.01em;
  opacity: 1;
}

.page-features-advanced .adv-exit__contact a {
  color: var(--color-contrast-accent);
  text-decoration: underline;
}

.page-features-advanced .adv-exit__figure .figure__caption {
  color: var(--color-contrast-ink);
  opacity: 0.76;
}

/* ============ 焦点可见 ============ */
.page-features-advanced a:focus-visible,
.page-features-advanced button:focus-visible,
.page-features-advanced summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* ============ 断点 ============ */
@media (min-width: 760px) {
  .page-features-advanced .adv-scene {
    grid-template-columns: 120px minmax(0, 1fr) auto;
    align-items: start;
    gap: var(--space-3);
    padding: var(--space-4) 0;
  }

  .page-features-advanced .adv-scene__tag {
    padding-top: 6px;
  }

  .page-features-advanced .adv-scene__main {
    grid-column: 2;
  }

  .page-features-advanced .adv-follow {
    grid-column: 3;
    justify-self: end;
  }
}

@media (min-width: 960px) {
  .page-features-advanced .adv-intro {
    padding: var(--space-8) 0 var(--space-8);
  }

  .page-features-advanced .adv-intro__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: var(--space-8);
  }

  .page-features-advanced .adv-cols {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-features-advanced .adv-cols::after {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: var(--adv-seam);
    transform: translateX(-50%);
    border-left: var(--border-thin) solid var(--color-line);
    border-right: var(--border-thin) solid var(--color-contrast-line);
    pointer-events: none;
  }

  .page-features-advanced .adv-cols__pane--player {
    padding: var(--space-6) var(--space-4) var(--space-6) 0;
  }

  .page-features-advanced .adv-cols__pane--team {
    padding: var(--space-6) 0 var(--space-6) var(--space-4);
  }

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

@media (min-width: 1200px) {
  .page-features-advanced .adv-compare,
  .page-features-advanced .adv-steps-section,
  .page-features-advanced .adv-scenes,
  .page-features-advanced .adv-versus,
  .page-features-advanced .adv-pitfalls {
    padding-top: var(--section-y-lg);
    padding-bottom: var(--section-y-lg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-features-advanced .adv-entry,
  .page-features-advanced .adv-follow {
    transition: none;
  }

  .page-features-advanced .adv-entry:hover {
    transform: none;
  }
}
<<<END>>>