.page-features {
  --feat-hairline: var(--color-line);
  --feat-soft: color-mix(in srgb, var(--color-primary) 9%, transparent);
  --feat-veil: color-mix(in srgb, var(--color-surface) 76%, transparent);
}

/* ---------- 首屏 ---------- */
.page-features .feat-hero {
  position: relative;
  overflow: hidden;
  padding-block: var(--space-4) var(--space-6);
  background-image: linear-gradient(135deg, var(--color-primary-soft) 0%, var(--color-highlight) 46%, var(--color-surface) 100%);
  border-bottom: var(--border-thin) solid var(--feat-hairline);
}

.page-features .feat-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, var(--feat-soft) 0 1px, transparent 1px 104px),
    repeating-linear-gradient(0deg, var(--feat-soft) 0 1px, transparent 1px 104px);
}

.page-features .feat-hero > .container {
  position: relative;
  z-index: 1;
}

.page-features .breadcrumb ol {
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-features .breadcrumb li + li::before {
  content: "/";
  margin-inline-end: var(--space-1);
  color: var(--color-ink-muted);
}

.page-features .breadcrumb a {
  color: var(--color-ink-soft);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--feat-hairline);
}

.page-features .breadcrumb a:hover,
.page-features .breadcrumb a:focus-visible {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.page-features .feat-hero__grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: minmax(0, 1fr);
  margin-top: var(--space-2);
}

.page-features .feat-hero__copy h1 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  max-width: 15ch;
}

.page-features .feat-hero__copy .lede {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features .feat-hero__figures {
  display: grid;
  gap: var(--space-2);
  align-content: start;
}

.page-features .feat-hero__figures .stat {
  display: grid;
  gap: 2px;
  padding: var(--space-3);
  border: var(--border-thin) solid var(--feat-hairline);
  border-radius: var(--radius-sm);
  background: var(--feat-veil);
}

.page-features .stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-ink);
}

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

.page-features .stat--accent .stat__num {
  color: var(--color-accent);
}

/* ---------- 首屏索引 ---------- */
.page-features .cap-index {
  margin-top: var(--space-6);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--feat-hairline);
}

.page-features .cap-index__label {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.page-features .cap-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
  grid-template-columns: minmax(0, 1fr);
}

.page-features .cap-index__link {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin) solid var(--feat-hairline);
  border-radius: var(--radius-sm);
  background: var(--feat-veil);
  color: var(--color-ink);
  text-decoration: none;
  transition: border-color 180ms ease-out, color 180ms ease-out;
}

.page-features .cap-index__link .mono {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
}

.page-features .cap-index__name {
  font-weight: 600;
  flex: 1 1 auto;
}

.page-features .cap-index__count {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  white-space: nowrap;
}

.page-features .cap-index__link:hover,
.page-features .cap-index__link:focus-visible {
  border-color: var(--color-primary);
  color: var(--color-primary);
  outline: none;
}

/* ---------- 能力区块 ---------- */
.page-features .feat-section {
  padding-block: var(--section-y);
}

.page-features .cap-block {
  scroll-margin-top: 96px;
}

.page-features .cap-block + .cap-block,
.page-features .feat-dict {
  border-top: var(--border-thin) solid var(--feat-hairline);
}

.page-features .cap-head {
  max-width: 68ch;
}

.page-features .eyebrow {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

.page-features .cap-head h2 {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-features .cap-head__lead {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 能力条：5:7 非对称 ---------- */
.page-features .cap-rows {
  margin-top: var(--space-6);
}

.page-features .cap-row {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: minmax(0, 1fr);
  padding-block: var(--space-4);
  border-top: var(--border-thin) solid var(--feat-hairline);
}

.page-features .cap-row:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-features .cap-row__aside {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.page-features .cap-idx {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 600;
  color: color-mix(in srgb, var(--color-primary) 55%, var(--color-ink-muted));
}

.page-features .cap-row__time {
  margin: 0;
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-features .cap-row__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);
  color: var(--color-ink);
}

.page-features .cap-row__body > p {
  margin: 0 0 var(--space-3);
  max-width: 62ch;
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features .cap-row__range {
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--space-3);
  border-left: var(--border-thin) solid var(--feat-hairline);
  display: grid;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-features .tag {
  display: inline-block;
  padding: 3px var(--space-2);
  border-radius: var(--radius-sm);
  background: var(--color-surface-deep);
  color: var(--color-ink-soft);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

/* 当前锚点段落：左侧短色条状态 */
.page-features .cap-block:target .cap-row__aside::before {
  content: "";
  display: block;
  width: 28px;
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
}

/* ---------- 展开组 ---------- */
.page-features .disclosure {
  margin-top: var(--space-3);
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--feat-hairline);
}

.page-features .disclosure__toggle {
  appearance: none;
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  transition: color 180ms ease-out;
}

.page-features .disclosure__toggle::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: var(--text-base);
  line-height: 1;
  display: inline-block;
  width: 1em;
}

.page-features .disclosure[data-open] .disclosure__toggle::before {
  content: "–";
}

.page-features .disclosure__toggle:hover,
.page-features .disclosure__toggle:focus-visible {
  color: var(--color-focus);
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.page-features .disclosure__panel {
  display: none;
  margin-top: var(--space-2);
  opacity: 0;
  transition: opacity 240ms ease-out;
}

.page-features .disclosure[data-open] .disclosure__panel {
  display: block;
  opacity: 1;
}

.page-features .disclosure__body {
  max-width: 66ch;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

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

.page-features .disclosure--wide {
  margin-top: var(--space-4);
  padding: var(--space-3);
  border: var(--border-thin) solid var(--feat-hairline);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

/* ---------- 图片与展签 ---------- */
.page-features .figure {
  position: relative;
  margin: 0;
}

.page-features .figure__media {
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-surface-deep);
}

.page-features .figure__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-features .plate {
  position: absolute;
  left: var(--space-2);
  bottom: var(--space-2);
  max-width: calc(100% - var(--space-4));
  padding: 3px var(--space-2);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-surface-deep) 90%, transparent);
  color: var(--color-ink-soft);
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
}

.page-features .plate--tr {
  left: auto;
  right: var(--space-2);
  top: var(--space-2);
  bottom: auto;
}

/* ---------- 首发区块的图文分栏 ---------- */
.page-features .cap-head--split {
  max-width: none;
}

.page-features .cap-head__figure {
  margin-top: var(--space-4);
}

.page-features .cap-head__figure .figure__media {
  aspect-ratio: 1 / 1;
}

/* ---------- 补时区块 ---------- */
.page-features .stop-band {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: minmax(0, 1fr);
  margin-top: var(--space-4);
}

.page-features .stop-band__main .figure__media {
  aspect-ratio: 1000 / 560;
}

.page-features .stop-band__side .figure__media {
  aspect-ratio: 800 / 600;
}

/* ---------- 同步区块 ---------- */
.page-features .sync-figure {
  margin-top: var(--space-4);
}

.page-features .sync-figure .figure__media {
  aspect-ratio: 1200 / 600;
}

/* ---------- 词典与简史对照 ---------- */
.page-features .dict-grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: minmax(0, 1fr);
  margin-top: var(--space-4);
}

.page-features .dict-card {
  padding: var(--space-4);
  border: var(--border-thin) solid var(--feat-hairline);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  display: grid;
  gap: var(--space-2);
  align-content: start;
}

.page-features .dict-card--alt {
  background: var(--color-surface-alt);
}

.page-features .dict-card__num {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-primary);
}

.page-features .dict-card h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-features .dict-card p {
  margin: 0;
  max-width: 34ch;
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features .dict-more {
  margin: var(--space-4) 0 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-features .dict-more a {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
  border-bottom: var(--border-thin) solid currentColor;
}

/* ---------- 适合谁 ---------- */
.page-features .feat-fit {
  background: var(--color-surface-alt);
  border-top: var(--border-thin) solid var(--feat-hairline);
}

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

.page-features .fit-list li {
  padding-left: var(--space-3);
  border-left: var(--border-thin) solid var(--feat-hairline);
  line-height: var(--leading-body);
  font-size: var(--text-base);
  color: var(--color-ink-soft);
}

.page-features .fit-list strong {
  color: var(--color-ink);
  font-weight: 600;
}

/* ---------- 收尾出口 ---------- */
.page-features .feat-cta {
  padding-block: var(--section-y-lg);
  border-top: var(--border-thin) solid var(--feat-hairline);
  background: var(--color-surface);
}

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

.page-features .feat-cta__head h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  max-width: 18ch;
}

.page-features .feat-cta__links {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: minmax(0, 1fr);
}

.page-features .cta-card {
  display: grid;
  gap: var(--space-1);
  align-content: start;
  padding: var(--space-3);
  border: var(--border-thin) solid var(--feat-hairline);
  border-left: 6px solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: inherit;
  text-decoration: none;
  transition: border-color 180ms ease-out, background-color 180ms ease-out;
}

.page-features .cta-card__k {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-features .cta-card__t {
  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 .cta-card__d {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features .cta-card:hover,
.page-features .cta-card:focus-visible {
  border-left-color: var(--color-accent);
  background: var(--color-surface-alt);
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-features .feat-cta__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-muted);
}

.page-features .feat-cta__note a {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
  border-bottom: var(--border-thin) solid currentColor;
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 760px) {
  .page-features .cap-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-features .dict-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-features .feat-cta__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-features .feat-hero {
    padding-block: var(--space-6) var(--space-8);
  }

  .page-features .feat-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: var(--space-8);
    align-items: start;
    margin-top: var(--space-4);
  }

  .page-features .feat-hero__figures {
    margin-top: var(--space-8);
  }

  .page-features .cap-index__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-features .cap-row {
    grid-template-columns: 5fr 7fr;
    gap: var(--space-6);
    padding-block: var(--space-6);
  }

  .page-features .cap-row__aside {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
    position: sticky;
    top: 96px;
  }

  .page-features .cap-block:target .cap-row__aside::before {
    width: 34px;
  }

  .page-features .cap-head--split {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: var(--space-8);
    align-items: center;
  }

  .page-features .cap-head__figure {
    margin-top: 0;
  }

  .page-features .stop-band {
    grid-template-columns: 7fr 5fr;
    gap: var(--space-6);
    align-items: start;
  }

  .page-features .stop-band__side {
    margin-top: var(--space-8);
  }

  .page-features .feat-cta__grid {
    grid-template-columns: 5fr 7fr;
    gap: var(--space-8);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-features .disclosure__panel,
  .page-features .cap-index__link,
  .page-features .disclosure__toggle,
  .page-features .cta-card {
    transition: none;
  }
}
</main>