.page-rankings {
  --rk-row-indent: var(--space-3);
  --rk-side-col: 232px;
}

/* ---------- 首屏 ---------- */
.page-rankings .rk-hero {
  padding-top: var(--space-6);
}

.page-rankings .rk-hero .breadcrumb {
  margin-bottom: var(--space-4);
}

.page-rankings .rk-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: end;
}

.page-rankings .rk-hero__kicker {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-3);
  font-size: var(--text-xs);
  letter-spacing: 0.24em;
  color: var(--color-primary);
}

.page-rankings .rk-hero__kicker::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--color-primary);
}

.page-rankings .rk-hero__title {
  font-size: var(--text-display);
  line-height: 1.04;
  letter-spacing: 0.06em;
  margin: 0 0 var(--space-3);
}

.page-rankings .rk-hero__lede {
  font-size: var(--text-lg);
  line-height: 1.85;
  color: var(--color-ink);
  max-width: var(--measure);
  margin: 0 0 var(--space-3);
}

.page-rankings .rk-hero__note {
  font-size: var(--text-sm);
  line-height: 1.85;
  color: var(--color-ink-muted);
  max-width: var(--measure);
  margin: 0;
  padding-left: var(--space-3);
  border-left: var(--border-thin) solid var(--color-line);
}

.page-rankings .rk-hero__figure {
  margin: 0;
}

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

/* ---------- 数字带 ---------- */
.page-rankings .rk-band {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: var(--space-6);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-rankings .rk-band__cell {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-4) var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-rankings .rk-band__cell:first-child {
  border-top: 0;
}

.page-rankings .rk-band__figure {
  font-family: var(--font-heading);
  font-size: var(--text-figure);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  letter-spacing: 0.02em;
}

.page-rankings .rk-band__label {
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  color: var(--color-contrast-accent);
}

/* ---------- 维度跳转条 ---------- */
.page-rankings .rk-dims {
  margin-top: var(--space-6);
  border-top: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-rankings .rk-dims__inner {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-rankings .rk-dims__link {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-2);
  text-decoration: none;
  color: var(--color-ink);
  transition: background-color 0.18s ease-out;
}

.page-rankings .rk-dims__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 2px;
  height: 0;
  transform: translateY(-50%);
  background: var(--color-primary);
  transition: height 0.18s ease-out;
}

.page-rankings .rk-dims__link:hover,
.page-rankings .rk-dims__link:focus-visible {
  background: var(--color-primary-soft);
}

.page-rankings .rk-dims__link:hover::before,
.page-rankings .rk-dims__link:focus-visible::before {
  height: 30px;
}

.page-rankings .rk-dims__no {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.18em;
  color: var(--color-primary);
}

.page-rankings .rk-dims__name {
  font-size: var(--text-lg);
  letter-spacing: var(--tracking-heading);
}

.page-rankings .rk-dims__range {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  font-variant-numeric: tabular-nums;
}

/* ---------- 目录表头 ---------- */
.page-rankings .rk-thead {
  display: none;
}

/* ---------- 分组 ---------- */
.page-rankings .rk-group__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: start;
}

.page-rankings .rk-group__figure {
  margin: 0;
}

.page-rankings .rk-group--alt .rk-list--full {
  background: var(--color-surface-alt);
  padding: 0 var(--space-3);
}

.page-rankings .rk-list--full .rk-item {
  padding-left: var(--space-3);
}

/* ---------- 条目行 ---------- */
.page-rankings .rk-list {
  border-top: var(--border-thin) solid var(--color-line);
}

.page-rankings .rk-item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  padding: var(--rk-row-indent) 0 var(--rk-row-indent) var(--space-4);
  border-bottom: var(--border-thin) solid var(--color-line);
  transition: background-color 0.18s ease-out;
}

.page-rankings .rk-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 0;
  height: 1px;
  transform: translateY(-50%);
  background: var(--color-primary);
  transition: width 0.18s ease-out;
}

.page-rankings .rk-item:hover {
  background: var(--color-primary-soft);
}

.page-rankings .rk-item:hover::before,
.page-rankings .rk-item:focus-within::before {
  width: 24px;
}

.page-rankings .rk-item__no {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  line-height: 1;
  color: var(--color-primary);
}

.page-rankings .rk-item__title {
  font-size: var(--text-xl);
  line-height: 1.35;
  letter-spacing: var(--tracking-heading);
  margin: 0 0 var(--space-1);
}

.page-rankings .rk-item__desc {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: 56ch;
}

.page-rankings .rk-item__side {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-1);
}

.page-rankings .rk-tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-rankings .rk-item__freq {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.page-rankings .rk-item__caliber summary {
  list-style: none;
  cursor: pointer;
  display: inline-block;
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
  border-bottom: var(--border-thin) dashed var(--color-line);
  padding-bottom: 2px;
}

.page-rankings .rk-item__caliber summary::-webkit-details-marker {
  display: none;
}

.page-rankings .rk-item__caliber summary::after {
  content: " ＋";
  color: var(--color-primary);
}

.page-rankings .rk-item__caliber[open] summary::after {
  content: " －";
}

.page-rankings .rk-item__caliber p {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  line-height: 1.8;
  color: var(--color-ink-soft);
  text-align: left;
  max-width: 40ch;
}

/* ---------- 微型柱条 ---------- */
.page-rankings .rk-bars {
  display: block;
  margin-top: var(--space-2);
  max-width: 100%;
}

.page-rankings .rk-bars rect {
  fill: var(--color-accent);
  opacity: 0.85;
}

/* ---------- 口径说明 ---------- */
.page-rankings .rk-caliber__grid {
  row-gap: var(--space-6);
}

.page-rankings .rk-caliber__col {
  padding-top: var(--space-3);
  border-top: var(--border-thick) solid var(--color-primary);
}

.page-rankings .rk-caliber__col--out {
  border-top-color: var(--color-line);
}

.page-rankings .rk-caliber__title {
  margin: 0;
  font-size: var(--text-2xl);
  letter-spacing: var(--tracking-heading);
}

.page-rankings .rk-caliber__list {
  list-style: none;
  margin: var(--space-2) 0 0;
  padding: 0;
}

.page-rankings .rk-caliber__list li {
  position: relative;
  padding-left: var(--space-3);
  margin-bottom: var(--space-2);
  font-size: var(--text-base);
  line-height: 1.85;
  color: var(--color-ink);
}

.page-rankings .rk-caliber__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.9em;
  width: 12px;
  height: 1px;
  background: var(--color-primary);
}

.page-rankings .rk-caliber__col--out .rk-caliber__list li::before {
  background: var(--color-line);
}

/* ---------- 更新节奏 ---------- */
.page-rankings .rk-rhythm__rows {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-rankings .rk-rhythm__row {
  padding: var(--space-4);
  background: var(--color-surface-alt);
  border-left: 3px solid var(--color-primary);
}

.page-rankings .rk-rhythm__row:last-child {
  border-left-color: var(--color-accent);
}

.page-rankings .rk-rhythm__key {
  margin: 0 0 var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.22em;
  color: var(--color-ink-muted);
}

.page-rankings .rk-rhythm__main {
  margin: 0 0 var(--space-2);
  font-size: var(--text-2xl);
  line-height: 1.35;
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-rankings .rk-rhythm__sub {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.85;
  color: var(--color-ink-soft);
}

.page-rankings .rk-rhythm__foot {
  margin: var(--space-4) 0 0;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  line-height: 1.85;
  color: var(--color-ink-muted);
}

/* ---------- 延伸入口 ---------- */
.page-rankings .rk-next__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-rankings .rk-next__title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-3xl);
  line-height: 1.25;
  letter-spacing: var(--tracking-heading);
}

.page-rankings .rk-next__text {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: 34ch;
}

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

.page-rankings .rk-next__list li {
  border-top: var(--border-thin) solid var(--color-line);
}

.page-rankings .rk-next__list li:last-child {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-rankings .rk-next__list a {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-2) var(--space-3) var(--space-3);
  text-decoration: none;
  color: var(--color-ink);
  font-size: var(--text-xl);
  letter-spacing: var(--tracking-heading);
  transition: background-color 0.18s ease-out;
}

.page-rankings .rk-next__list a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 0;
  height: 1px;
  transform: translateY(-50%);
  background: var(--color-primary);
  transition: width 0.18s ease-out;
}

.page-rankings .rk-next__list a:hover,
.page-rankings .rk-next__list a:focus-visible {
  background: var(--color-primary-soft);
}

.page-rankings .rk-next__list a:hover::before,
.page-rankings .rk-next__list a:focus-visible::before {
  width: 24px;
}

.page-rankings .rk-next__list a span {
  font-size: var(--text-sm);
  line-height: 1.8;
  letter-spacing: 0;
  color: var(--color-ink-muted);
}

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

/* ---------- 平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-rankings .rk-band {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-rankings .rk-band__cell {
    border-top: 0;
    border-left: var(--border-thin) solid var(--color-contrast-line);
  }

  .page-rankings .rk-band__cell:first-child {
    border-left: 0;
  }

  .page-rankings .rk-dims__inner {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-rankings .rk-thead {
    display: grid;
    grid-template-columns: 64px minmax(0, 1fr) var(--rk-side-col);
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    background: var(--color-contrast-surface);
    color: var(--color-contrast-ink);
    font-size: var(--text-xs);
    letter-spacing: 0.18em;
  }

  .page-rankings .rk-thead__side {
    text-align: right;
  }

  .page-rankings .rk-item {
    grid-template-columns: 64px minmax(0, 1fr) var(--rk-side-col);
    gap: var(--space-3);
    padding-left: var(--rk-row-indent);
    align-items: start;
  }

  .page-rankings .rk-item__side {
    align-items: flex-end;
    text-align: right;
  }

  .page-rankings .rk-rhythm__rows {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-6);
  }
}

@media (min-width: 900px) {
  .page-rankings .rk-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-6);
  }

  .page-rankings .rk-group__body--media-right {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-6);
  }

  .page-rankings .rk-group__body--media-left {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: var(--space-6);
  }

  .page-rankings .rk-next__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: var(--space-6);
  }
}

/* ---------- 减少动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-rankings .rk-dims__link,
  .page-rankings .rk-dims__link::before,
  .page-rankings .rk-item,
  .page-rankings .rk-item::before,
  .page-rankings .rk-next__list a,
  .page-rankings .rk-next__list a::before {
    transition: none;
  }
}