.page-rankings {
  --rk-rule: var(--border-thin) solid var(--color-line);
  --rk-dark-rule: var(--border-thin) solid var(--color-contrast-line);
  --rk-scope-col: calc(var(--space-8) * 3);
}

/* ---------- 首屏 ---------- */

.page-rankings .rk-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: var(--space-6) 0 var(--space-8);
  background: var(--color-surface);
  border-bottom: var(--rk-rule);
}

.page-rankings .rk-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(158deg, color-mix(in srgb, var(--color-primary-soft) 78%, transparent) 0%, transparent 44%),
    linear-gradient(206deg, color-mix(in srgb, var(--color-highlight) 60%, transparent) 0%, transparent 26%);
}

.page-rankings .rk-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-rankings .rk-crumbs a {
  color: var(--color-primary);
  text-decoration: none;
}

.page-rankings .rk-crumbs a:hover {
  color: var(--color-focus);
}

.page-rankings .rk-crumbs li + li::before {
  content: "/";
  margin-right: var(--space-1);
  color: var(--color-line);
}

.page-rankings .rk-crumbs li[aria-current="page"] {
  color: var(--color-ink-soft);
}

.page-rankings .rk-hero-head {
  max-width: 68ch;
}

.page-rankings .rk-hero-title {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.028em;
  color: var(--color-ink);
  margin: var(--space-2) 0 var(--space-3);
}

.page-rankings .rk-hero-lead {
  color: var(--color-ink-soft);
  max-width: var(--measure);
  margin: 0;
}

.page-rankings .rk-hero-body {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

@media (min-width: 1024px) {
  .page-rankings .rk-hero-body {
    grid-template-columns: minmax(0, 1.9fr) minmax(0, 1fr);
    align-items: start;
  }
}

/* 表格骨架 */

.page-rankings .rk-skel {
  background: var(--color-surface);
  border: var(--rk-rule);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}

.page-rankings .rk-skel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-1) var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-deep);
  border-bottom: var(--rk-rule);
}

.page-rankings .rk-skel-title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  letter-spacing: 0.06em;
  color: var(--color-ink);
}

.page-rankings .rk-skel-note {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-rankings .rk-skel-table {
  width: 100%;
  min-width: 460px;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.page-rankings .rk-skel-table caption {
  text-align: left;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-rankings .rk-skel-table thead th {
  padding: var(--space-2) var(--space-3);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  letter-spacing: 0.08em;
  text-align: right;
  white-space: nowrap;
}

.page-rankings .rk-skel-table thead th:first-child {
  text-align: left;
}

.page-rankings .rk-skel-table tbody th {
  text-align: left;
  padding: var(--space-2) var(--space-3);
  font-weight: var(--weight-body);
  color: var(--color-ink-soft);
  white-space: nowrap;
}

.page-rankings .rk-skel-table tbody td {
  padding: var(--space-2) var(--space-3);
  text-align: right;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-lg);
  line-height: 1.2;
  color: var(--color-ink);
  white-space: nowrap;
}

.page-rankings .rk-skel-table tbody tr + tr {
  border-top: var(--rk-rule);
}

.page-rankings .rk-skel-table tbody tr:nth-child(even) {
  background: var(--color-surface-alt);
}

.page-rankings .rk-delta {
  color: var(--color-accent);
  box-shadow: inset var(--border-thin) 0 0 var(--color-accent);
}

/* 关键数字面板 */

.page-rankings .rk-side {
  display: grid;
  gap: var(--space-3);
}

.page-rankings .rk-keypanel {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  box-shadow: var(--shadow-2);
}

.page-rankings .rk-keypanel-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.16em;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

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

.page-rankings .rk-key {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-top: var(--space-2);
  border-top: var(--rk-dark-rule);
}

.page-rankings .rk-key-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-contrast-ink);
}

.page-rankings .rk-key-label {
  font-size: var(--text-sm);
  line-height: 1.4;
  color: color-mix(in srgb, var(--color-contrast-ink) 68%, transparent);
}

.page-rankings .rk-key--signal .rk-key-num {
  color: var(--color-contrast-accent);
}

/* ---------- 榜单通用 ---------- */

.page-rankings .rk-board {
  border-bottom: var(--rk-rule);
}

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

.page-rankings .rk-board-head {
  display: grid;
  gap: var(--space-3);
  align-items: start;
}

@media (min-width: 1024px) {
  .page-rankings .rk-board-head {
    grid-template-columns: minmax(0, 1.75fr) minmax(0, 1fr);
  }
}

.page-rankings .rk-h2 {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 800;
  line-height: var(--leading-heading);
  letter-spacing: -0.018em;
  color: var(--color-ink);
  margin: var(--space-2) 0 var(--space-3);
}

.page-rankings .rk-board-lead {
  margin: 0 0 var(--space-3);
  max-width: var(--measure);
  color: var(--color-ink-soft);
  line-height: var(--leading-body);
}

.page-rankings .rk-scope {
  display: grid;
  gap: 0;
  border-top: var(--rk-rule);
}

.page-rankings .rk-scope .stat-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: var(--rk-rule);
  font-size: var(--text-sm);
}

.page-rankings .rk-scope .stat-key {
  color: var(--color-ink-muted);
}

.page-rankings .rk-scope .stat-val {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--color-ink);
  text-align: right;
}

.page-rankings .rk-board-figure,
.page-rankings .rk-hero-figure {
  margin: 0;
}

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

/* ---------- 对比表 ---------- */

.page-rankings .rk-table-wrap {
  margin-top: var(--space-4);
  background: var(--color-surface);
  border: var(--rk-rule);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
}

.page-rankings .rk-table {
  width: 100%;
  min-width: 880px;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.page-rankings .rk-table caption,
.page-rankings .rk-caption {
  text-align: left;
  padding: var(--space-3);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
  border-bottom: var(--rk-rule);
}

.page-rankings .rk-table thead th {
  padding: var(--space-2) var(--space-3);
  background: var(--color-primary-soft);
  color: var(--color-ink);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-sm);
  text-align: right;
  white-space: nowrap;
  border-bottom: var(--rk-rule);
}

.page-rankings .rk-table thead th.rk-th-name {
  text-align: left;
}

.page-rankings .rk-table thead th.rk-th-group {
  text-align: center;
  background: var(--color-surface-deep);
  letter-spacing: 0.14em;
}

.page-rankings .rk-table thead th.rk-th-note {
  text-align: left;
}

.page-rankings .rk-table tbody th,
.page-rankings .rk-table tfoot th {
  text-align: left;
  padding: var(--space-2) var(--space-3);
  font-weight: var(--weight-body);
  color: var(--color-ink);
  white-space: nowrap;
}

.page-rankings .rk-table tbody td,
.page-rankings .rk-table tfoot td {
  padding: var(--space-2) var(--space-3);
  text-align: right;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-base);
  color: var(--color-ink);
  white-space: nowrap;
}

.page-rankings .rk-table tbody tr:nth-child(odd) {
  background: var(--color-surface-alt);
}

.page-rankings .rk-table tbody tr:hover {
  background: color-mix(in srgb, var(--color-primary-soft) 62%, var(--color-surface));
}

.page-rankings .rk-table td.rk-delta {
  color: var(--color-accent);
  font-weight: var(--weight-heading);
  box-shadow: inset var(--border-thin) 0 0 var(--color-accent);
}

.page-rankings .rk-table td.rk-note {
  text-align: left;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-rankings .rk-table tfoot th,
.page-rankings .rk-table tfoot td {
  background: var(--color-surface-deep);
  border-top: var(--rk-rule);
  font-weight: var(--weight-heading);
}

.page-rankings .rk-table tfoot th {
  font-family: var(--font-heading);
  letter-spacing: 0.06em;
}

/* ---------- 脚注与回溯链接 ---------- */

.page-rankings .rk-footnote {
  position: relative;
  margin: var(--space-3) 0 0;
  padding: 0 0 0 var(--space-3);
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

.page-rankings .rk-footnote::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.4em;
  bottom: 0.4em;
  width: var(--border-thin);
  background: var(--color-accent);
}

.page-rankings .rk-backlink {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-rankings .rk-backlink a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: var(--border-thin) solid currentColor;
}

.page-rankings .rk-backlink a:hover {
  color: var(--color-focus);
}

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

/* ---------- 选择建议 ---------- */

.page-rankings .rk-choose {
  background: var(--color-surface-deep);
  border-top: var(--rk-rule);
  border-bottom: var(--rk-rule);
}

.page-rankings .rk-choose-head {
  max-width: var(--measure);
}

.page-rankings .rk-advice {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--rk-rule);
}

.page-rankings .rk-advice li {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3) 0;
  border-bottom: var(--rk-rule);
}

@media (min-width: 900px) {
  .page-rankings .rk-advice li {
    grid-template-columns: var(--rk-scope-col) minmax(0, 1fr);
    gap: var(--space-3);
    align-items: baseline;
  }
}

.page-rankings .rk-advice-key {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}

.page-rankings .rk-advice-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-accent);
}

.page-rankings .rk-advice-tag {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-ink);
}

.page-rankings .rk-advice-body {
  margin: 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
  line-height: var(--leading-body);
}

/* ---------- 更新与回溯 ---------- */

.page-rankings .rk-track-grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

@media (min-width: 1024px) {
  .page-rankings .rk-track-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }
}

.page-rankings .rk-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.page-rankings .rk-timeline .timeline-item {
  padding: var(--space-1) 0 var(--space-1) var(--space-3);
  border-left: var(--border-thin) solid var(--color-line);
}

.page-rankings .rk-timeline .timeline-time {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-accent);
}

.page-rankings .rk-timeline-body {
  margin: var(--space-1) 0 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
  line-height: var(--leading-body);
}

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

.page-rankings .rk-ledger-lead {
  margin: 0;
  color: var(--color-ink-soft);
  line-height: var(--leading-body);
}

.page-rankings .rk-links {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  border-top: var(--rk-rule);
}

.page-rankings .rk-links li {
  border-bottom: var(--rk-rule);
}

.page-rankings .rk-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  font-size: var(--text-sm);
  color: var(--color-primary);
  text-decoration: none;
}

.page-rankings .rk-links a::after {
  content: "→";
  flex: none;
  color: var(--color-ink-muted);
}

.page-rankings .rk-links a:hover {
  color: var(--color-focus);
}

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

.page-rankings .rk-ledger .panel-foot {
  border-top: var(--rk-rule);
}

@media (prefers-reduced-motion: reduce) {
  .page-rankings .rk-table tbody tr:hover {
    background: inherit;
  }
}