.page-solutions {
  --sol-plane-pad: clamp(var(--space-4), 5vw, var(--space-8));
  --sol-hair: calc(var(--space-1) / 4);
}

.page-solutions .crumbs {
  padding-block: var(--space-4) var(--space-2);
}

/* 首屏 */
.page-solutions .sol-hero {
  padding-block: var(--space-2) var(--space-6);
}

.page-solutions .sol-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-solutions .sol-hero__plane {
  background: var(--color-primary);
  color: var(--color-primary-ink);
  padding: var(--sol-plane-pad);
  min-height: calc(var(--space-8) * 4);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: var(--space-3);
}

.page-solutions .sol-hero__eyebrow {
  color: color-mix(in srgb, var(--color-primary-ink) 74%, var(--color-primary));
  margin: 0;
}

.page-solutions .sol-hero__title {
  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);
  margin: 0;
  max-width: 16ch;
}

.page-solutions .sol-hero__lede {
  margin: 0;
  max-width: 44ch;
  color: color-mix(in srgb, var(--color-primary-ink) 86%, var(--color-primary));
}

.page-solutions .sol-hero__ladder {
  position: relative;
  overflow: hidden;
  background: var(--color-surface-alt);
  padding: var(--space-3);
}

.page-solutions .sol-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
}

.page-solutions .sol-hero__ladder-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  height: 100%;
}

.page-solutions .sol-ladder {
  margin: 0;
  display: grid;
  gap: var(--space-2);
}

.page-solutions .sol-ladder__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-solutions .sol-ladder__grid {
  stroke: var(--color-line);
  stroke-width: 1;
  fill: none;
}

.page-solutions .sol-ladder__step {
  stroke: var(--color-primary);
  stroke-width: 1.5;
  fill: none;
  stroke-linejoin: miter;
}

.page-solutions .sol-ladder__dot {
  fill: var(--color-accent);
}

.page-solutions .sol-ladder__cap {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  line-height: var(--leading-body);
}

.page-solutions .sol-rungs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-solutions .sol-rung {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-1);
  width: 100%;
  padding: calc(var(--space-1) * 0.75) var(--space-1);
  background: transparent;
  border: 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  border-right: var(--border-thin) solid var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
  color: var(--color-ink-soft);
  text-align: left;
  cursor: default;
  transition: background-color 200ms ease, color 200ms ease;
}

.page-solutions .sol-rung:nth-child(3n) {
  border-right: 0;
}

.page-solutions .sol-rung:hover,
.page-solutions .sol-rung:focus-visible {
  background: var(--color-highlight);
  color: var(--color-accent);
}

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

.page-solutions .sol-rung__num {
  letter-spacing: 0.04em;
}

.page-solutions .sol-rung__mark {
  width: var(--space-1);
  height: var(--space-1);
  border-radius: var(--radius-pill);
  background: var(--color-line);
  margin-left: auto;
  flex: none;
}

.page-solutions .sol-rung--edge .sol-rung__mark {
  background: var(--color-accent);
}

.page-solutions .sol-rung__tip {
  position: absolute;
  right: 0;
  bottom: calc(100% + var(--sol-hair));
  z-index: 2;
  padding: var(--sol-hair) var(--space-1);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity 200ms ease, visibility 200ms ease;
}

.page-solutions .sol-rung:hover .sol-rung__tip,
.page-solutions .sol-rung:focus-visible .sol-rung__tip {
  opacity: 1;
  visibility: visible;
}

/* 数字暗带 */
.page-solutions .sol-metrics {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding-block: var(--space-6);
  margin-top: var(--space-6);
}

.page-solutions .sol-metrics__inner {
  display: grid;
  gap: var(--space-4);
}

.page-solutions .sol-metrics__item {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}

.page-solutions .sol-metrics__label {
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
}

.page-solutions .sol-metrics__note {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 76%, var(--color-contrast-surface));
}

/* 分组 */
.page-solutions .sol-board {
  margin-top: var(--space-6);
}

.page-solutions .sol-tabs {
  margin-bottom: var(--space-6);
}

.page-solutions .sol-groups {
  display: grid;
  gap: 0;
}

.page-solutions .sol-group {
  position: relative;
  display: grid;
  gap: var(--space-3);
  padding-block: var(--space-6);
  border-top: var(--border-thick) solid var(--color-ink);
}

.page-solutions .sol-group::before {
  content: "";
  position: absolute;
  top: calc(var(--border-thick) * 2);
  left: 0;
  right: 0;
  height: var(--border-thin);
  background: var(--color-line);
}

.page-solutions .sol-group__head {
  display: grid;
  gap: var(--space-2);
  padding-top: var(--space-2);
}

.page-solutions .sol-group__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
}

.page-solutions .sol-group__text {
  margin: 0;
  color: var(--color-ink-soft);
}

.page-solutions .sol-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.page-solutions .sol-point {
  display: grid;
  gap: var(--sol-hair);
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-solutions .sol-point__name {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  letter-spacing: var(--tracking-heading);
}

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

.page-solutions .sol-fig {
  margin: 0;
  display: grid;
  gap: var(--space-1);
}

.page-solutions .sol-fig__cap {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  line-height: var(--leading-body);
}

/* 托管时限条 */
.page-solutions .sol-custody {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.page-solutions .sol-custody__item {
  flex: 1 1 calc(var(--space-8) * 1.6);
  display: grid;
  gap: var(--sol-hair);
  padding-top: var(--space-1);
  border-top: var(--border-thick) solid var(--color-primary);
}

.page-solutions .sol-custody__num {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.page-solutions .sol-custody__unit {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* 结算与回溯两列 */
.page-solutions .sol-split {
  display: grid;
  gap: var(--space-4);
}

.page-solutions .sol-split__col {
  display: grid;
  gap: var(--space-2);
  align-content: start;
}

.page-solutions .sol-split__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  color: var(--color-primary);
}

.page-solutions .sol-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-solutions .sol-list__item {
  display: grid;
  gap: var(--sol-hair);
  padding-block: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
  font-size: var(--text-base);
}

.page-solutions .sol-list__key {
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-solutions .sol-list__val {
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
}

/* 表格 */
.page-solutions .sol-table-wrap {
  margin-top: var(--space-6);
  overflow-x: auto;
}

.page-solutions .sol-plans__cap {
  caption-side: top;
  text-align: left;
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  padding-bottom: var(--space-2);
}

.page-solutions .sol-plans th,
.page-solutions .sol-plans td {
  vertical-align: top;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
}

.page-solutions .sol-plan-name {
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  min-width: calc(var(--space-8) * 2);
}

.page-solutions .sol-plan-more {
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  font-weight: var(--weight-body);
}

.page-solutions .sol-plan-more summary {
  cursor: pointer;
  color: var(--color-accent);
  letter-spacing: 0.02em;
}

.page-solutions .sol-plan-more summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-solutions .sol-plan-more p {
  margin: var(--space-1) 0 0;
  color: var(--color-ink-muted);
  line-height: var(--leading-body);
  max-width: 30ch;
}

.page-solutions .sol-row:hover th,
.page-solutions .sol-row:hover td {
  background: var(--color-highlight);
}

/* 边界说明 */
.page-solutions .sol-limits {
  margin: 0;
  display: grid;
  gap: 0;
  max-width: var(--measure);
}

.page-solutions .sol-limit {
  display: grid;
  gap: var(--sol-hair);
  padding-block: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-solutions .sol-limit:first-child {
  border-top: var(--border-thin) solid var(--color-ink);
}

.page-solutions .sol-limit__term {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  letter-spacing: var(--tracking-heading);
}

.page-solutions .sol-limit__desc {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* 路径区 */
.page-solutions .sol-fig--tail {
  margin-top: var(--space-6);
}

.page-solutions .sol-paths {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-solutions .sol-path {
  display: grid;
  gap: var(--sol-hair);
  padding-block: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-solutions .sol-path__title {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
}

.page-solutions .sol-path__text {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-solutions .sol-outro {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-ink);
}

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

.page-solutions .sol-outro .link,
.page-solutions .sol-path .link {
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-color: var(--color-focus);
  text-underline-offset: 0.2em;
}

.page-solutions .sol-outro .link:hover,
.page-solutions .sol-path .link:hover {
  color: var(--color-accent);
}

.page-solutions .sol-outro .link:focus-visible,
.page-solutions .sol-path .link:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* 响应式 */
@media (min-width: 760px) {
  .page-solutions .sol-metrics__inner {
    grid-template-columns: auto auto;
    align-items: end;
    gap: var(--space-6) var(--space-8);
  }

  .page-solutions .sol-metrics__note {
    grid-column: 1 / -1;
  }

  .page-solutions .sol-paths {
    grid-template-columns: repeat(2, 1fr);
    gap: 0 var(--space-4);
  }

  .page-solutions .sol-path:nth-child(1),
  .page-solutions .sol-path:nth-child(2) {
    border-top: var(--border-thin) solid var(--color-ink);
  }
}

@media (min-width: 900px) {
  .page-solutions .sol-hero__inner {
    grid-template-columns: 7fr 5fr;
    gap: var(--space-6);
    align-items: stretch;
  }

  .page-solutions .sol-hero__plane {
    min-height: calc(var(--space-8) * 6);
  }

  .page-solutions .sol-rungs {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-solutions .sol-group--media {
    grid-template-columns: 5fr 7fr;
    gap: var(--space-6);
    align-items: start;
  }

  .page-solutions .sol-group--media .sol-group__head {
    grid-column: 1;
    grid-row: 1;
  }

  .page-solutions .sol-group--media .sol-points {
    grid-column: 1;
    grid-row: 2;
  }

  .page-solutions .sol-group--media .sol-fig {
    grid-column: 2;
    grid-row: 1 / span 2;
  }

  .page-solutions .sol-group--media-rev {
    grid-template-columns: 7fr 5fr;
    gap: var(--space-6);
    align-items: start;
  }

  .page-solutions .sol-group--media-rev .sol-group__head {
    grid-column: 1;
    grid-row: 1;
  }

  .page-solutions .sol-group--media-rev .sol-points {
    grid-column: 1;
    grid-row: 2;
  }

  .page-solutions .sol-group--media-rev .sol-fig {
    grid-column: 2;
    grid-row: 1 / span 2;
  }

  .page-solutions .sol-group--narrow {
    grid-template-columns: 6fr 6fr;
    column-gap: var(--space-6);
    align-items: start;
  }

  .page-solutions .sol-group--narrow .sol-group__head {
    grid-column: 1;
    grid-row: 1;
  }

  .page-solutions .sol-group--narrow .sol-custody {
    grid-column: 1;
    grid-row: 2;
  }

  .page-solutions .sol-group--narrow .sol-fig {
    grid-column: 2;
    grid-row: 1 / span 2;
  }

  .page-solutions .sol-group--split .sol-split {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }

  .page-solutions .sol-limits {
    max-width: var(--measure);
  }
}

@media (min-width: 1160px) {
  .page-solutions .sol-rungs {
    grid-template-columns: repeat(9, 1fr);
  }

  .page-solutions .sol-rung {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sol-hair);
  }

  .page-solutions .sol-rung:nth-child(3n) {
    border-right: var(--border-thin) solid var(--color-line);
  }

  .page-solutions .sol-rung:last-child {
    border-right: 0;
  }

  .page-solutions .sol-rung__mark {
    margin-left: 0;
  }

  .page-solutions .sol-paths {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-solutions .sol-path:nth-child(3),
  .page-solutions .sol-path:nth-child(4) {
    border-top: var(--border-thin) solid var(--color-ink);
  }
}
<<<END>>>