.page-features {
  display: block;
}

.page-features .mono {
  font-family: var(--font-mono);
}

.page-features img {
  display: block;
  max-width: 100%;
  height: auto;
}

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

/* ---------- 首屏深色指标板 ---------- */
.page-features .feat-hero {
  position: relative;
  overflow: hidden;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding-block: var(--space-6) var(--section-y-lg);
}

.page-features .feat-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-features .feat-hero__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center right;
  opacity: 0.32;
}

.page-features .feat-hero__scrim {
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.page-features .feat-hero__inner {
  position: relative;
  z-index: 1;
}

.page-features .feat-hero__crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  margin-bottom: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-contrast-ink);
}

.page-features .feat-hero__crumb a {
  color: var(--color-contrast-ink);
  text-decoration: underline;
  text-decoration-thickness: var(--border-thin);
  text-underline-offset: 4px;
}

.page-features .feat-hero__crumb a:hover {
  color: var(--color-contrast-accent);
  text-decoration-thickness: 2px;
}

.page-features .feat-hero__eyebrow {
  margin: 0 0 var(--space-3);
  padding-left: var(--space-2);
  border-left: 3px solid var(--color-contrast-accent);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  color: var(--color-contrast-ink);
}

.page-features .feat-hero__title {
  margin: 0 0 var(--space-6);
  max-width: 14ch;
  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-contrast-ink);
  overflow-wrap: break-word;
}

.page-features .feat-hero__body {
  display: grid;
  gap: var(--space-6);
  align-items: end;
}

.page-features .feat-hero__lede {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
}

.page-features .feat-hero__stamp {
  margin: var(--space-3) 0 0;
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

.page-features .feat-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4) var(--space-3);
  margin: 0;
}

.page-features .feat-hero__stat {
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid color-mix(in srgb, var(--color-contrast-ink) 32%, transparent);
}

.page-features .feat-hero__stat-label {
  margin: 0 0 var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-contrast-ink);
  opacity: 0.78;
}

.page-features .feat-hero__stat-num {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--color-contrast-ink);
}

.page-features .feat-hero__stat-unit {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-body);
  letter-spacing: 0;
  color: var(--color-contrast-ink);
  opacity: 0.8;
}

.page-features .feat-hero__stat-caliber {
  margin: var(--space-1) 0 0;
  font-size: var(--text-xs);
  line-height: 1.5;
  color: var(--color-contrast-ink);
  opacity: 0.62;
}

/* ---------- 指标分组 ---------- */
.page-features .feat-group {
  padding-block: var(--section-y);
}

.page-features .feat-group + .feat-group,
.page-features .feat-notes,
.page-features .feat-paths {
  border-top: 3px double var(--color-line);
}

.page-features .feat-group__top {
  display: grid;
  gap: var(--space-4);
}

.page-features .feat-group__head {
  display: grid;
  gap: var(--space-2);
}

.page-features .feat-group__no {
  display: inline-block;
  align-self: start;
  padding: var(--space-1) var(--space-3);
  border: var(--border-thin) solid var(--color-primary);
  border-radius: var(--radius-pill);
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
}

.page-features .feat-group__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

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

.page-features .feat-group__figure {
  margin: 0;
}

.page-features .figure__cap {
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

.page-features .feat-group__strip {
  margin: var(--space-6) 0 0;
}

/* 折叠控制条 */
.page-features .feat-fold {
  margin-top: var(--space-6);
}

.page-features .feat-fold__bar {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  min-height: var(--space-4);
  padding: var(--space-1) var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-pill);
  background-color: var(--color-surface);
  color: var(--color-primary);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  cursor: pointer;
  list-style: none;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.page-features .feat-fold__bar::-webkit-details-marker {
  display: none;
}

.page-features .feat-fold__bar:hover {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary);
}

.page-features .feat-fold[open] > .feat-fold__bar {
  border-color: var(--color-primary);
}

/* 指标行 */
.page-features .feat-rows {
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-features .feat-row {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-2);
  border-bottom: 1px dotted var(--color-line);
  transition: background-color 0.18s ease;
}

.page-features .feat-row:hover,
.page-features .feat-row:focus-within {
  background-color: var(--color-primary-soft);
}

.page-features .feat-row__no {
  justify-self: start;
  padding: 0;
  border: 0;
  border-bottom: var(--border-thin) dotted currentColor;
  background: none;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-primary);
  cursor: pointer;
  transition: color 0.18s ease, border-bottom-width 0.18s ease;
}

.page-features .feat-row__no:hover {
  color: var(--color-accent);
  border-bottom: 2px solid currentColor;
}

.page-features .feat-row__name {
  margin: 0 0 var(--space-1);
  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 .feat-row__desc {
  margin: 0;
  max-width: 62ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features .feat-caliber {
  margin-top: var(--space-2);
}

.page-features .feat-caliber > summary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding-bottom: 2px;
  border-bottom: var(--border-thin) dotted var(--color-line);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
  cursor: pointer;
  list-style: none;
}

.page-features .feat-caliber > summary::-webkit-details-marker {
  display: none;
}

.page-features .feat-caliber > summary::before {
  content: "+";
  font-family: var(--font-mono);
  color: var(--color-primary);
}

.page-features .feat-caliber[open] > summary::before {
  content: "−";
}

.page-features .feat-caliber > summary:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.page-features .feat-caliber p {
  margin: var(--space-2) 0 0;
  max-width: 62ch;
  padding-left: var(--space-2);
  border-left: 2px solid var(--color-primary-soft);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

.page-features .feat-row__value {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1);
}

.page-features .feat-row__num {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--color-primary);
}

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

.page-features .feat-row__flag {
  font-size: var(--text-xs);
}

.page-features .feat-row__bar {
  flex: 1 0 100%;
  width: 100%;
  height: var(--space-1);
  margin-top: var(--space-1);
  border-radius: var(--radius-pill);
  background-color: var(--color-surface-deep);
  overflow: hidden;
}

.page-features .feat-row__bar i {
  display: block;
  height: 100%;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary);
  transform-origin: left center;
  transition: transform 0.18s ease, background-color 0.18s ease;
}

.page-features .feat-row:hover .feat-row__bar i {
  transform: scaleX(1.08);
}

.page-features .feat-row--key .feat-row__bar i {
  background-color: var(--color-accent);
}

.page-features .feat-row__bar--w95 i { width: 95%; }
.page-features .feat-row__bar--w88 i { width: 88%; }
.page-features .feat-row__bar--w78 i { width: 78%; }
.page-features .feat-row__bar--w62 i { width: 62%; }
.page-features .feat-row__bar--w52 i { width: 52%; }
.page-features .feat-row__bar--w46 i { width: 46%; }
.page-features .feat-row__bar--w40 i { width: 40%; }
.page-features .feat-row__bar--w99 i { width: 99%; }
.page-features .feat-row__bar--w34 i { width: 34%; }

/* 检索组：旁注列 9:3 */
.page-features .feat-group__split {
  display: grid;
  gap: var(--space-6);
}

.page-features .feat-group__aside {
  display: grid;
  gap: var(--space-3);
  align-content: start;
}

.page-features .feat-group__aside-note {
  margin: 0;
  padding-top: var(--space-2);
  border-top: 2px solid var(--color-primary);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

/* ---------- 口径说明 ---------- */
.page-features .feat-notes {
  padding-block: var(--section-y);
  background-color: var(--color-surface-alt);
}

.page-features .feat-notes__head {
  display: grid;
  gap: var(--space-2);
}

.page-features .feat-notes__list {
  margin: var(--space-6) 0 0;
  padding: 0;
}

.page-features .feat-notes__item {
  display: grid;
  gap: var(--space-1);
  padding-block: var(--space-3);
  border-top: 1px dotted var(--color-line);
}

.page-features .feat-notes__key {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  color: var(--color-primary);
}

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

/* ---------- 延伸入口 ---------- */
.page-features .feat-paths {
  padding-block: var(--section-y);
}

.page-features .feat-paths__head {
  display: grid;
  gap: var(--space-2);
}

.page-features .feat-paths__grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.page-features .feat-path {
  display: block;
  padding: var(--space-3) var(--space-2) var(--space-4);
  border-top: 3px solid var(--color-line);
  text-decoration: none;
  color: inherit;
  transition: border-top-color 0.18s ease, background-color 0.18s ease;
}

.page-features .feat-path:hover,
.page-features .feat-path:focus-visible {
  border-top-color: var(--color-primary);
  background-color: var(--color-surface-alt);
}

.page-features .feat-path__no {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-ink-muted);
}

.page-features .feat-path__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-features .feat-path__desc {
  margin: 0 0 var(--space-3);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features .feat-path__cue {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-primary);
}

.page-features .feat-path:hover .feat-path__cue {
  color: var(--color-accent);
}

.page-features .feat-paths__back {
  margin: var(--space-6) 0 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-features .feat-paths__back a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: var(--border-thin);
  text-underline-offset: 4px;
}

.page-features .feat-paths__back a:hover {
  color: var(--color-accent);
  text-decoration-thickness: 2px;
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-features .feat-hero {
    padding-block: var(--space-8) var(--section-y-lg);
  }

  .page-features .feat-hero__body {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: var(--space-8);
    align-items: end;
  }

  .page-features .feat-hero__stats {
    gap: var(--space-4);
  }

  .page-features .feat-hero__stat-num {
    font-size: calc(var(--text-figure) * 0.8);
  }

  .page-features .feat-group {
    padding-block: var(--section-y-lg);
  }

  .page-features .feat-group__top {
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: start;
    gap: var(--space-6);
  }

  .page-features .feat-row {
    grid-template-columns: 80px minmax(0, 1fr) 224px;
    gap: var(--space-4);
    align-items: start;
  }

  .page-features .feat-notes__item {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: var(--space-4);
    align-items: baseline;
  }
}

@media (min-width: 960px) {
  .page-features .feat-group__split {
    grid-template-columns: minmax(0, 9fr) minmax(0, 3fr);
    gap: var(--space-8);
  }

  .page-features .feat-paths__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--gutter);
    align-items: start;
  }

  .page-features .feat-path:nth-child(1) {
    grid-column: 1 / span 5;
  }

  .page-features .feat-path:nth-child(2) {
    grid-column: 7 / span 4;
    margin-top: var(--space-6);
  }

  .page-features .feat-path:nth-child(3) {
    grid-column: 11 / span 2;
    margin-top: var(--space-8);
  }
}
<<<END>>>