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

.page-features-advanced .adv-h2 {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  margin: 0 0 var(--space-2);
}

/* ---------- 面包屑与前导 ---------- */
.page-features-advanced .adv-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  margin-bottom: var(--space-4);
}

.page-features-advanced .adv-crumb a {
  color: var(--color-ink-soft);
  text-decoration: none;
  padding-bottom: 1px;
  border-bottom: var(--border-thin) solid transparent;
}

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

.page-features-advanced .adv-crumb__sep {
  color: var(--color-ink-muted);
}

.page-features-advanced .adv-intro__eyebrow {
  color: var(--color-ink-muted);
  margin: 0 0 var(--space-2);
}

.page-features-advanced .adv-intro__title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-3);
  max-width: 22ch;
}

.page-features-advanced .adv-intro__lede {
  max-width: var(--measure);
  color: var(--color-ink-soft);
  margin: 0;
}

/* ---------- 定位条 ---------- */
.page-features-advanced .adv-locator {
  background: var(--color-primary);
  color: var(--color-primary-ink);
  padding-top: calc(var(--space-4) + var(--space-1));
  padding-bottom: calc(var(--space-4) + var(--space-1));
}

.page-features-advanced .adv-locator__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  align-items: center;
}

.page-features-advanced .adv-locator__text {
  margin: 0;
  max-width: 62ch;
  font-size: var(--text-base);
  color: var(--color-primary-ink);
}

.page-features-advanced .adv-locator__side {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin: 0;
}

.page-features-advanced .adv-locator__code {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-lg);
  letter-spacing: 0.04em;
  color: var(--color-primary-ink);
}

.page-features-advanced .adv-locator__back {
  display: inline-block;
  font-size: var(--text-sm);
  color: var(--color-primary-ink);
  text-decoration: none;
  padding: var(--space-1) var(--space-2);
  border: var(--border-thin) solid currentColor;
  border-radius: var(--radius-sm);
}

.page-features-advanced .adv-locator__back:hover,
.page-features-advanced .adv-locator__back:focus-visible {
  background: var(--color-primary-ink);
  color: var(--color-primary);
}

/* ---------- 尺规分隔 ---------- */
.page-features-advanced .ruler {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.page-features-advanced .ruler__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-accent);
  letter-spacing: 0.08em;
}

.page-features-advanced .ruler__ticks {
  flex: 1 1 auto;
  height: 10px;
  background-image: repeating-linear-gradient(
    to right,
    var(--color-ink-muted) 0,
    var(--color-ink-muted) 1px,
    transparent 1px,
    transparent 12px
  );
  opacity: 0.55;
}

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

.page-features-advanced .adv-trend .ruler__ticks {
  background-image: repeating-linear-gradient(
    to right,
    var(--color-contrast-line) 0,
    var(--color-contrast-line) 1px,
    transparent 1px,
    transparent 12px
  );
  opacity: 1;
}

/* ---------- 双栏对比 ---------- */
.page-features-advanced .adv-panel__lead {
  max-width: var(--measure);
  margin-bottom: var(--space-4);
}

.page-features-advanced .adv-panel__text {
  margin: 0;
  color: var(--color-ink-soft);
}

.page-features-advanced .adv-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-features-advanced .adv-col {
  padding: var(--space-4) var(--space-3);
}

.page-features-advanced .adv-col--primary {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-features-advanced .adv-col--deep {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-features-advanced .adv-col__tag {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.85;
}

.page-features-advanced .adv-col__title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
}

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

.page-features-advanced .adv-defs__row {
  display: grid;
  grid-template-columns: 6.5em 1fr;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-top: var(--border-thin) solid currentColor;
  border-top-color: color-mix(in srgb, currentColor 26%, transparent);
}

.page-features-advanced .adv-defs__row:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-features-advanced .adv-defs dt {
  font-size: var(--text-sm);
  opacity: 0.82;
}

.page-features-advanced .adv-defs dd {
  margin: 0;
  font-size: var(--text-base);
}

.page-features-advanced .adv-col--primary .adv-defs dd .num,
.page-features-advanced .adv-col--deep .adv-defs dd .num {
  color: inherit;
  font-family: var(--font-mono);
  font-weight: 700;
}

/* ---------- 图形容器 ---------- */
.page-features-advanced .adv-figure {
  margin: 0;
}

.page-features-advanced .adv-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.page-features-advanced .adv-figure figcaption {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  line-height: 1.5;
}

.page-features-advanced .adv-trend .adv-figure figcaption {
  color: var(--color-contrast-ink);
  opacity: 0.75;
}

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

/* ---------- 对阵样本 ---------- */
.page-features-advanced .adv-sampling {
  background: var(--color-surface-alt);
}

.page-features-advanced .adv-sampling__lede {
  max-width: var(--measure);
  color: var(--color-ink-soft);
  margin: 0 0 var(--space-4);
}

.page-features-advanced .adv-sampling__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

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

.page-features-advanced .adv-rules .data-row {
  padding: var(--space-3) 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-features-advanced .adv-rules .data-row:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-features-advanced .adv-rules .data-row__id,
.page-features-advanced .adv-outputs__list .data-row__id,
.page-features-advanced .adv-conds .data-row__id {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--space-1);
}

.page-features-advanced .adv-rules .data-row__title,
.page-features-advanced .adv-outputs__list .data-row__title,
.page-features-advanced .adv-conds .data-row__title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
}

.page-features-advanced .adv-rules .data-row__meta,
.page-features-advanced .adv-conds .data-row__meta {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  line-height: 1.6;
}

/* ---------- 样本刻度 ---------- */
.page-features-advanced .adv-scale {
  margin-top: var(--space-6);
  padding: var(--space-3) 0 0;
  display: grid;
  gap: var(--space-2);
}

.page-features-advanced .adv-scale__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.page-features-advanced .adv-scale__marks {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: baseline;
}

.page-features-advanced .adv-scale__mark {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  padding-bottom: 4px;
  border-bottom: 3px solid var(--color-surface-deep);
  min-width: 2.2em;
  text-align: center;
}

.page-features-advanced .adv-scale__mark--gate {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.page-features-advanced .adv-scale__hint {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

/* ---------- 输出条目 ---------- */
.page-features-advanced .adv-outputs__lede {
  max-width: var(--measure);
  color: var(--color-ink-soft);
  margin: 0 0 var(--space-4);
}

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

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

.page-features-advanced .adv-out {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
  padding: var(--space-3);
  background: var(--color-surface-alt);
  border-radius: var(--radius-sm);
  transition: background-color 200ms ease-out;
}

.page-features-advanced .adv-out__body {
  min-width: 0;
}

.page-features-advanced .adv-outputs__list .data-row__meta {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  line-height: 1.6;
}

.page-features-advanced .adv-out__tag {
  justify-self: start;
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
}

.page-features-advanced .adv-out.is-hit {
  background: var(--color-highlight);
}

.page-features-advanced .adv-out.is-hit .data-row__id {
  color: var(--color-focus);
}

.page-features-advanced .filter-empty {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-features-advanced .adv-outputs__note {
  margin: var(--space-4) 0 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-features-advanced .adv-outputs__note a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-accent);
}

/* ---------- 走势带 ---------- */
.page-features-advanced .adv-trend {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

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

.page-features-advanced .adv-trend__lede {
  max-width: var(--measure);
  color: var(--color-contrast-ink);
  opacity: 0.82;
  margin: 0 0 var(--space-4);
}

.page-features-advanced .adv-trend__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.page-features-advanced .adv-trend__figures {
  display: grid;
  gap: var(--space-4);
}

.page-features-advanced .adv-fig {
  display: grid;
  grid-template-columns: auto auto;
  align-items: baseline;
  gap: var(--space-1) var(--space-2);
}

.page-features-advanced .adv-fig__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-figure);
  line-height: 0.95;
  color: var(--color-contrast-accent);
  letter-spacing: -0.02em;
}

.page-features-advanced .adv-fig__unit {
  font-size: var(--text-lg);
  color: var(--color-contrast-ink);
  opacity: 0.7;
}

.page-features-advanced .adv-fig__desc {
  grid-column: 1 / -1;
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  opacity: 0.82;
  line-height: 1.65;
}

.page-features-advanced .adv-trend__note {
  margin: 0;
  padding-top: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  opacity: 0.7;
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

/* ---------- 适用条件 ---------- */
.page-features-advanced .adv-limits__lede {
  max-width: var(--measure);
  color: var(--color-ink-soft);
  margin: 0 0 var(--space-4);
}

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

.page-features-advanced .adv-conds .data-row {
  padding: var(--space-3);
  background: var(--color-surface-deep);
  border-radius: var(--radius-sm);
}

.page-features-advanced .adv-fold {
  margin-top: var(--space-4);
  background: var(--color-surface-alt);
  border-radius: var(--radius-sm);
}

.page-features-advanced .adv-fold summary {
  padding: var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  cursor: pointer;
  list-style: none;
}

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

.page-features-advanced .adv-fold summary::before {
  content: "▚ ";
  font-family: var(--font-mono);
  color: var(--color-accent);
}

.page-features-advanced .adv-fold[open] summary::before {
  content: "▞ ";
}

.page-features-advanced .adv-fold summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-features-advanced .adv-fold .collapse__body {
  padding: 0 var(--space-3) var(--space-3);
}

.page-features-advanced .adv-fold .collapse__body p {
  margin: 0 0 var(--space-2);
  max-width: var(--measure);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  line-height: 1.7;
}

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

/* ---------- 相邻主题 ---------- */
.page-features-advanced .adv-next {
  background: var(--color-surface-alt);
}

.page-features-advanced .adv-next__title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  margin: 0 0 var(--space-3);
}

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

.page-features-advanced .adv-next__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-1) var(--space-3);
  align-items: baseline;
  padding: var(--space-3);
  background: var(--color-surface);
  border-radius: var(--radius-sm);
}

.page-features-advanced .adv-next__code {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  letter-spacing: 0.1em;
}

.page-features-advanced .adv-next__item a {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
}

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

.page-features-advanced .adv-next__desc {
  grid-column: 2 / -1;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  line-height: 1.6;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-features-advanced .adv-locator__inner {
    grid-template-columns: 1fr auto;
    gap: var(--space-4);
  }

  .page-features-advanced .adv-cols {
    grid-template-columns: 1fr 1fr;
  }

  .page-features-advanced .adv-out {
    grid-template-columns: auto 1fr auto;
    align-items: start;
    gap: var(--space-3);
  }

  .page-features-advanced .adv-out__tag {
    justify-self: end;
  }

  .page-features-advanced .adv-next__item {
    grid-template-columns: auto 1fr auto;
    align-items: baseline;
  }

  .page-features-advanced .adv-next__desc {
    grid-column: 3 / -1;
    max-width: 34ch;
  }
}

@media (min-width: 960px) {
  .page-features-advanced .adv-sampling__grid {
    grid-template-columns: 1.15fr 1fr;
    align-items: start;
  }

  .page-features-advanced .adv-trend__layout {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .page-features-advanced .adv-intro__title {
    font-size: var(--text-3xl);
  }

  .page-features-advanced .adv-intro__lede {
    font-size: var(--text-lg);
  }
}

@media (max-width: 480px) {
  .page-features-advanced .adv-defs__row {
    grid-template-columns: 1fr;
    gap: var(--space-1);
  }

  .page-features-advanced .adv-fig {
    grid-template-columns: 1fr;
  }

  .page-features-advanced .adv-scale__marks {
    gap: var(--space-1);
  }
}