.page-features {
  --cap-row-alt: color-mix(in srgb, var(--color-surface-deep) 55%, var(--color-surface));
  --cap-row-hi: color-mix(in srgb, var(--color-highlight) 72%, var(--color-surface));
}

/* ---------- 首屏 ---------- */
.page-features .cap-hero {
  padding-block: var(--space-4) var(--space-6);
}

.page-features .cap-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-features .cap-hero__title {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  margin: var(--space-3) 0 var(--space-3);
}

.page-features .cap-hero__lede {
  max-width: 46ch;
}

.page-features .cap-hero__note {
  margin-top: var(--space-3);
  max-width: 48ch;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
  border-left: var(--border-thick) solid var(--color-primary);
  padding-left: var(--space-2);
}

.page-features .cap-hero__block {
  position: relative;
  overflow: hidden;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: var(--border-thick) solid var(--color-primary);
}

.page-features .cap-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}

.page-features .cap-hero__block::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.page-features .cap-hero__block-inner {
  position: relative;
  z-index: 1;
  padding: var(--space-4) var(--space-3) var(--space-6);
}

.page-features .cap-hero__block-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
  padding-bottom: var(--space-1);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-features .cap-hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.page-features .cap-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-top: var(--space-2);
  border-top: var(--border-thin) dotted var(--color-contrast-line);
}

.page-features .cap-hero__num {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--color-contrast-ink);
}

.page-features .cap-hero__unit {
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  opacity: 0.82;
}

/* ---------- 通用小标题 ---------- */
.page-features .cap-h2 {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: var(--space-2) 0 var(--space-3);
  max-width: 22ch;
}

/* ---------- 结构示意 ---------- */
.page-features .cap-structure__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-features .cap-structure__text {
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

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

.page-features .cap-stack__box {
  fill: color-mix(in srgb, var(--color-primary) 14%, var(--color-surface));
  stroke: var(--color-primary);
  stroke-width: 1;
}

.page-features .cap-stack__box--mid {
  fill: color-mix(in srgb, var(--color-primary) 26%, var(--color-surface));
}

.page-features .cap-stack__box--deep {
  fill: color-mix(in srgb, var(--color-primary) 42%, var(--color-surface));
}

.page-features .cap-stack__label {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  fill: var(--color-ink);
}

.page-features .cap-stack__val {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  fill: var(--color-ink-soft);
}

.page-features .cap-stack__caption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-ink-muted);
  padding-top: var(--space-1);
  border-top: var(--border-thin) dotted var(--color-line);
}

/* ---------- 对照表 ---------- */
.page-features .cap-matrix__head {
  margin-bottom: var(--space-4);
}

.page-features .cap-matrix__lead {
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-features .cap-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.page-features .cap-table__caption {
  text-align: left;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
  padding-bottom: var(--space-2);
}

.page-features .cap-table thead th {
  text-align: left;
  vertical-align: bottom;
  padding: var(--space-2) var(--space-2) var(--space-2) 0;
  border-bottom: var(--border-thick) solid var(--color-ink);
  font-weight: 400;
}

.page-features .cap-table thead th:first-child {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-ink);
}

.page-features .cap-table thead th:not(:first-child) {
  position: relative;
}

.page-features .cap-table thead th:not(:first-child)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
}

.page-features .cap-table tbody th {
  text-align: left;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--text-sm);
  color: var(--color-ink);
  padding: var(--space-3) var(--space-3) var(--space-3) 0;
  border-bottom: var(--border-thin) dotted var(--color-line);
  white-space: nowrap;
}

.page-features .cap-table tbody td {
  padding: var(--space-3) var(--space-3) var(--space-3) 0;
  border-bottom: var(--border-thin) dotted var(--color-line);
  color: var(--color-ink-soft);
  line-height: 1.7;
  vertical-align: top;
}

.page-features .cap-table tbody tr:nth-child(even) td,
.page-features .cap-table tbody tr:nth-child(even) th {
  background: var(--cap-row-alt);
}

.page-features .cap-table tbody tr:hover td,
.page-features .cap-table tbody tr:hover th {
  background: var(--cap-row-hi);
  color: var(--color-ink);
}

.page-features .cap-table tbody tr:hover th {
  color: var(--color-accent);
}

.page-features .cap-table .mono {
  display: inline-block;
  margin-top: 2px;
  color: var(--color-ink);
  font-size: var(--text-xs);
}

.page-features .cap-meter {
  display: block;
  width: 84px;
  height: 6px;
  background: var(--color-surface-deep);
  position: relative;
  margin-bottom: var(--space-1);
}

.page-features .cap-meter__bar {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--w, 0%);
  background: var(--color-primary);
}

/* ---------- 横向主题带 ---------- */
.page-features .cap-band {
  margin-block: var(--space-6);
}

.page-features .cap-band__inner {
  padding-block: var(--space-6);
}

.page-features .cap-band__lead {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  line-height: 1.55;
  color: var(--color-contrast-ink);
  max-width: 58ch;
  margin-top: var(--space-3);
}

.page-features .cap-band__meta {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
}

.page-features .cap-band__link {
  color: var(--color-contrast-accent);
}

/* ---------- 差异说明 ---------- */
.page-features .cap-notes__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-3);
}

.page-features .cap-notes__list {
  display: grid;
  gap: var(--space-3);
}

.page-features .cap-notes .sidenote {
  padding: var(--space-3);
}

.page-features .cap-notes .sidenote__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.page-features .cap-notes .sidenote p {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

/* ---------- 选择建议 ---------- */
.page-features .cap-paths__lead {
  max-width: var(--measure);
  color: var(--color-ink-soft);
  margin-bottom: var(--space-4);
}

.page-features .cap-paths__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: var(--border-thick) solid var(--color-ink);
}

.page-features .cap-path {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
  padding: var(--space-4) 0;
  border-bottom: var(--border-thin) dotted var(--color-line);
}

.page-features .cap-path__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.page-features .cap-path__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-ink);
  margin: 0;
}

.page-features .cap-path__body {
  max-width: 44ch;
  color: var(--color-ink-soft);
}

.page-features .cap-path__meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

.page-features .cap-path__meta:first-of-type {
  color: var(--color-accent);
}

/* ---------- 案例合集 ---------- */
.page-features .cap-cases__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-features .cap-cases__lead {
  max-width: var(--measure);
  color: var(--color-ink-soft);
  margin-bottom: var(--space-4);
}

.page-features .cap-cases__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-features .cap-case {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-features .cap-case .panel {
  border: 0;
  background: transparent;
}

.page-features .cap-case__summary {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num name"
    "num use";
  gap: 2px var(--space-3);
  align-items: baseline;
  padding: var(--space-3) 0;
  cursor: pointer;
  list-style: none;
}

.page-features .cap-case__summary::-webkit-details-marker {
  display: none;
}

.page-features .cap-case__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
  letter-spacing: 0.06em;
}

.page-features .cap-case__name {
  grid-area: name;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-ink);
}

.page-features .cap-case__use {
  grid-area: use;
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  letter-spacing: 0.04em;
}

.page-features .cap-case__summary:hover .cap-case__name {
  color: var(--color-accent);
}

.page-features .cap-case .panel__body {
  padding: 0 0 var(--space-4) var(--space-4);
  border-left: var(--border-thick) solid var(--color-primary-soft);
}

.page-features .cap-case__dl {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1) 0;
  margin: 0;
}

.page-features .cap-case__dl dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-top: var(--space-2);
}

.page-features .cap-case__dl dd {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-ink-soft);
}

/* ---------- 相关入口 ---------- */
.page-features .cap-exit__lead {
  max-width: var(--measure);
  color: var(--color-ink-soft);
  margin-bottom: var(--space-4);
}

.page-features .cap-exit__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-features .cap-exit__item {
  border-bottom: var(--border-thin) dotted var(--color-line);
}

.page-features .cap-exit__link {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  padding: var(--space-3) 0 var(--space-3) var(--space-3);
  border-left: var(--border-thick) solid transparent;
  text-decoration: none;
  transition: border-color 150ms ease-out, background-color 150ms ease-out;
}

.page-features .cap-exit__link:hover,
.page-features .cap-exit__link:focus-visible {
  border-left-color: var(--color-primary);
  background: var(--color-primary-soft);
}

.page-features .cap-exit__name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-ink);
}

.page-features .cap-exit__desc {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

.page-features .cap-exit__link:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

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

/* ---------- 图片容器统一约束 ---------- */
.page-features .figure__frame img,
.page-features .cap-hero__bg {
  max-width: 100%;
  display: block;
}

/* ---------- 媒体查询：≥768px ---------- */
@media (min-width: 768px) {
  .page-features .cap-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-features .cap-paths__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--space-6);
  }

  .page-features .cap-path {
    padding-block: var(--space-4);
  }

  .page-features .cap-exit__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--space-6);
  }

  .page-features .cap-case__dl {
    grid-template-columns: 128px 1fr;
    column-gap: var(--space-3);
  }

  .page-features .cap-case__dl dt {
    margin-top: var(--space-2);
  }
}

/* ---------- 媒体查询：≥1024px ---------- */
@media (min-width: 1024px) {
  .page-features .cap-hero {
    padding-block: var(--space-6) var(--space-8);
  }

  .page-features .cap-hero__grid {
    grid-template-columns: repeat(12, 1fr);
    gap: var(--gutter);
    align-items: start;
  }

  .page-features .cap-hero__main {
    grid-column: 1 / 7;
    padding-top: var(--space-3);
  }

  .page-features .cap-hero__block {
    grid-column: 6 / 13;
    margin-top: var(--space-8);
  }

  .page-features .cap-hero__block-inner {
    padding: var(--space-6) var(--space-6) var(--space-8);
  }

  .page-features .cap-structure__grid {
    grid-template-columns: repeat(12, 1fr);
  }

  .page-features .cap-structure .col-main {
    grid-column: 1 / 9;
  }

  .page-features .cap-structure .col-aside {
    grid-column: 10 / 13;
  }

  .page-features .cap-notes__grid {
    grid-template-columns: repeat(12, 1fr);
    gap: var(--gutter);
  }

  .page-features .cap-notes .col-main {
    grid-column: 1 / 9;
  }

  .page-features .cap-notes .col-aside {
    grid-column: 9 / 13;
  }

  .page-features .cap-cases__grid {
    grid-template-columns: repeat(12, 1fr);
    gap: var(--gutter);
  }

  .page-features .cap-cases .col-main {
    grid-column: 1 / 9;
  }

  .page-features .cap-cases .col-aside {
    grid-column: 9 / 13;
  }

  .page-features .cap-band__inner {
    padding-block: var(--space-8);
  }
}
</final>

.page-features {
  --w: 1rem;
}