.page-rankings {
  --rk-scan: color-mix(in srgb, var(--color-contrast-ink) 6%, transparent);
  --rk-dim: color-mix(in srgb, var(--color-contrast-ink) 72%, transparent);
  --rk-faint: color-mix(in srgb, var(--color-contrast-ink) 58%, transparent);
  --rk-soft-bg: color-mix(in srgb, var(--color-contrast-ink) 7%, transparent);
}

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

/* ---------- 首屏 ---------- */
.page-rankings .rk-hero {
  position: relative;
  overflow: hidden;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: calc(var(--space-6) + var(--space-4)) 0 var(--section-y);
  border-bottom: var(--border-thick) solid var(--color-primary);
}

.page-rankings .rk-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    180deg,
    var(--rk-scan) 0 1px,
    transparent 1px 7px
  );
}

.page-rankings .rk-hero > .container {
  position: relative;
  z-index: 1;
}

.page-rankings .rk-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  margin: 0 0 var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--rk-faint);
}

.page-rankings .rk-breadcrumb__link {
  color: inherit;
  text-decoration: none;
  border-bottom: var(--border-thin) solid color-mix(in srgb, var(--color-contrast-ink) 36%, transparent);
}

.page-rankings .rk-breadcrumb__link:hover {
  color: var(--color-contrast-accent);
  border-bottom-color: var(--color-contrast-accent);
}

.page-rankings .rk-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: end;
}

.page-rankings .rk-eyebrow {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  color: var(--color-contrast-accent);
}

.page-rankings .rk-hero__title {
  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: 0.012em;
  color: var(--color-contrast-ink);
  text-wrap: balance;
}

.page-rankings .rk-hero__desc {
  max-width: 48ch;
  margin: 0;
  color: var(--rk-dim);
}

.page-rankings .rk-hero__viz {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.page-rankings .rk-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0 0 var(--space-3);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-rankings .rk-stat-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-rankings .rk-stat-item__num {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-contrast-ink);
  letter-spacing: 0.01em;
}

.page-rankings .rk-stat-item__unit {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-contrast-accent);
}

.page-rankings .rk-stat-item__note {
  font-size: var(--text-xs);
  line-height: 1.5;
  color: var(--rk-faint);
}

.page-rankings .rk-hero__figure {
  position: relative;
  margin: 0;
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-rankings .rk-hero__figure .figure__frame {
  position: relative;
  aspect-ratio: 1000 / 600;
  overflow: hidden;
}

.page-rankings .rk-hero__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-rankings .rk-hero__figure .figure__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: var(--overlay-scrim);
}

/* ---------- 通用区块 ---------- */
.page-rankings .rk-section {
  padding: var(--section-y) 0;
}

.page-rankings .rk-section--alt {
  background: var(--color-surface-alt);
}

.page-rankings .rk-section--deep {
  position: relative;
  overflow: hidden;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: var(--border-thick) solid var(--color-primary);
  border-bottom: var(--border-thick) solid var(--color-primary);
}

.page-rankings .rk-section--deep::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    180deg,
    var(--rk-scan) 0 1px,
    transparent 1px 7px
  );
}

.page-rankings .rk-section--deep > .container {
  position: relative;
  z-index: 1;
}

.page-rankings .rk-head .section-head__num {
  font-family: var(--font-mono);
  color: var(--color-accent);
  letter-spacing: 0.14em;
}

.page-rankings .rk-head--deep .section-head__num {
  color: var(--color-contrast-accent);
}

.page-rankings .rk-head--deep .section-head__lead {
  color: var(--rk-dim);
}

/* ---------- 对照方法 ---------- */
.page-rankings .rk-method__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.page-rankings .rk-prose p {
  margin: 0 0 var(--space-3);
}

.page-rankings .rk-prose a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: var(--border-thin);
  text-underline-offset: 3px;
}

.page-rankings .rk-prose a:hover {
  color: var(--color-accent);
}

.page-rankings .rk-callout {
  background: var(--color-surface);
  border-left: var(--border-thick) solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  box-shadow: var(--shadow-2);
}

.page-rankings .rk-callout__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-rankings .rk-callout__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-rankings .rk-callout__list li {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-1) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-xs);
  line-height: 1.55;
}

.page-rankings .rk-callout__list li:last-child {
  border-bottom: 0;
}

.page-rankings .rk-callout__k {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-rankings .rk-callout__v {
  text-align: right;
  color: var(--color-ink);
}

/* ---------- 分组标题 ---------- */
.page-rankings .rk-group-head {
  margin: 0 0 var(--space-4);
  padding-left: var(--space-3);
  border-left: var(--border-thick) solid var(--color-primary);
}

.page-rankings .rk-group-head--accent {
  border-left-color: var(--color-accent);
}

.page-rankings .rk-group-head__num {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-accent);
}

.page-rankings .rk-group-head .h-section {
  margin: 0 0 var(--space-2);
}

.page-rankings .rk-group-head__lead {
  max-width: var(--measure);
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 对照表 ---------- */
.page-rankings .rk-table-wrap {
  margin: 0 0 var(--space-6);
  background: var(--color-surface);
  border: var(--border-thick) solid var(--color-contrast-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-2);
}

.page-rankings .rk-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: var(--text-sm);
  color: var(--color-ink);
}

.page-rankings .rk-table__caption {
  caption-side: top;
  padding: var(--space-2) var(--space-3);
  text-align: left;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
  background: var(--color-surface-deep);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-rankings .rk-table thead th {
  padding: var(--space-2) var(--space-3);
  text-align: left;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.05em;
  color: var(--color-contrast-ink);
  background: var(--color-contrast-surface);
  border-right: var(--border-thin) solid var(--color-contrast-line);
  white-space: nowrap;
}

.page-rankings .rk-table thead th:last-child {
  border-right: 0;
}

.page-rankings .rk-table tbody th {
  width: 168px;
  padding: var(--space-2) var(--space-3);
  text-align: left;
  font-weight: 700;
  color: var(--color-ink);
  background: var(--color-surface-deep);
  border-right: var(--border-thick) solid var(--color-primary);
  border-bottom: var(--border-thin) solid var(--color-line);
  line-height: 1.55;
}

.page-rankings .rk-table tbody td {
  padding: var(--space-2) var(--space-3);
  vertical-align: top;
  line-height: 1.6;
  border-right: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
  transition: background-color 0.15s linear;
}

.page-rankings .rk-table tbody td:last-child {
  border-right: 0;
}

.page-rankings .rk-table tbody tr:nth-child(odd):not(.rk-resolve) {
  background: var(--color-surface-deep);
}

.page-rankings .rk-table tbody tr:not(.rk-resolve):hover td,
.page-rankings .rk-table tbody tr:not(.rk-resolve):hover th {
  background: var(--color-highlight);
}

.page-rankings .rk-resolve td {
  padding: var(--space-2) var(--space-3);
  background: var(--color-primary-soft);
  border-left: var(--border-thick) solid var(--color-primary);
  border-right: 0;
  border-bottom: var(--border-thick) solid var(--color-surface);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink);
}

.page-rankings .rk-resolve__tag {
  display: inline-block;
  margin-right: var(--space-1);
  padding: 1px var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-primary-ink);
  background: var(--color-primary);
  border-radius: var(--radius-sm);
}

.page-rankings .rk-inline-figure {
  margin: 0 auto;
  max-width: 100%;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
}

.page-rankings .rk-inline-figure .figure__frame {
  position: relative;
  overflow: hidden;
}

.page-rankings .rk-inline-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 取用建议（深色区） ---------- */
.page-rankings .rk-advice {
  list-style: none;
  margin: 0 0 var(--space-8);
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.page-rankings .rk-advice__item {
  padding: var(--space-3) var(--space-3) var(--space-3) var(--space-4);
  background: var(--rk-soft-bg);
  border-left: var(--border-thick) solid var(--color-contrast-accent);
  border-radius: var(--radius-md);
}

.page-rankings .rk-advice__num {
  display: block;
  margin-bottom: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-contrast-accent);
}

.page-rankings .rk-advice__title {
  display: block;
  margin-bottom: 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-contrast-ink);
}

.page-rankings .rk-advice__text {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--rk-dim);
}

.page-rankings .rk-section--deep a {
  color: var(--color-contrast-accent);
  text-decoration: underline;
  text-decoration-thickness: var(--border-thin);
  text-underline-offset: 3px;
}

.page-rankings .rk-section--deep a:hover {
  color: var(--color-contrast-ink);
}

/* ---------- 热力条带 ---------- */
.page-rankings .rk-heat-block {
  padding-top: var(--space-6);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-rankings .rk-heat-block__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-ink);
}

.page-rankings .rk-heat-block__lead {
  max-width: var(--measure);
  margin: 0 0 var(--space-4);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--rk-dim);
}

.page-rankings .rk-heat__track {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  height: clamp(48px, 8vw, 84px);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-rankings .rk-heat__seg {
  display: block;
  background: var(--color-primary);
  border-right: var(--border-thin) solid var(--color-contrast-surface);
}

.page-rankings .rk-heat__seg:last-child {
  border-right: 0;
}

.page-rankings .rk-heat__track:hover .rk-heat__seg {
  background: color-mix(in srgb, var(--color-primary) 82%, var(--color-contrast-accent));
}

.page-rankings .rk-heat__legend {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--space-2);
}

.page-rankings .rk-heat__legend li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.page-rankings .rk-heat__name {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-contrast-accent);
}

.page-rankings .rk-heat__val {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-contrast-ink);
}

.page-rankings .rk-heat__unit {
  font-size: var(--text-xs);
  line-height: 1.45;
  color: var(--rk-faint);
}

.page-rankings .rk-heat__note {
  margin: var(--space-3) 0 0;
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--rk-faint);
}

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
  .page-rankings .rk-hero__stats {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .page-rankings .rk-stat-item {
    flex-direction: row;
    align-items: baseline;
    flex-wrap: wrap;
    gap: var(--space-1);
    padding-bottom: var(--space-1);
    border-bottom: var(--border-thin) solid var(--color-contrast-line);
  }

  .page-rankings .rk-stat-item:last-child {
    border-bottom: 0;
  }

  .page-rankings .rk-stat-item__note {
    flex: 1 1 100%;
  }

  .page-rankings .rk-heat__legend {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3);
  }
}

@media (min-width: 900px) {
  .page-rankings .rk-hero__grid {
    grid-template-columns: 5fr 7fr;
    gap: calc(var(--space-6) + var(--space-2));
  }

  .page-rankings .rk-method__grid {
    grid-template-columns: 8fr 4fr;
    gap: var(--space-6);
  }

  .page-rankings .rk-inline-figure {
    max-width: 74%;
  }

  .page-rankings .rk-advice {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }
}
<<<END>>>
</<PAGE_CSS>