.page-solutions {
  background: var(--color-surface);
  color: var(--color-ink);
  overflow-x: hidden;
}

.page-solutions .sol-crumbs {
  padding-top: var(--space-4);
}

.page-solutions .sol-crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

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

.page-solutions .sol-crumbs a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 140ms linear;
}

.page-solutions .sol-crumbs a:hover,
.page-solutions .sol-crumbs a:focus-visible {
  border-bottom-color: var(--color-accent);
}

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

/* ---------- 首屏 ---------- */

.page-solutions .sol-hero {
  padding: var(--space-6) 0 var(--section-y);
}

.page-solutions .sol-eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-primary);
  text-transform: uppercase;
}

.page-solutions .sol-hero__title {
  margin: var(--space-3) 0 var(--space-4);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  overflow-wrap: break-word;
}

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

.page-solutions .sol-hero__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin-top: var(--space-6);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-solutions .sol-hero__left {
  padding: var(--space-4) var(--space-3);
  background: var(--color-surface-deep);
}

.page-solutions .sol-hero__right {
  padding: var(--space-4) var(--space-3);
  background: var(--color-contrast-surface);
  background-image: repeating-linear-gradient(
    0deg,
    transparent 0 3px,
    color-mix(in srgb, var(--color-contrast-ink) 6%, transparent) 3px 4px
  );
  color: var(--color-contrast-ink);
}

.page-solutions .sol-mini-label {
  margin: 0 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

.page-solutions .sol-mini-label--dark {
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, var(--color-contrast-surface));
}

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

.page-solutions .sol-cap {
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr) auto;
  align-items: baseline;
  gap: var(--space-2);
  padding: calc(var(--space-1) + 2px) 0;
  border-bottom: 1px dotted var(--color-line);
  font-size: var(--text-sm);
}

.page-solutions .sol-cap:last-child {
  border-bottom: 0;
}

.page-solutions .sol-cap__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

.page-solutions .sol-cap--cycle .sol-cap__dot {
  background: transparent;
  border: 1px dashed var(--color-ink-muted);
}

.page-solutions .sol-cap__name {
  color: var(--color-ink);
  overflow-wrap: break-word;
}

.page-solutions .sol-cap__meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  white-space: nowrap;
}

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

.page-solutions .sol-readout {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: calc(var(--space-1) / 2);
  min-width: 0;
}

.page-solutions .sol-readout__value {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--color-contrast-accent);
}

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

.page-solutions .sol-readout__label {
  flex-basis: 100%;
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  line-height: 1.5;
  color: color-mix(in srgb, var(--color-contrast-ink) 72%, var(--color-contrast-surface));
}

.page-solutions .sol-hero__note {
  margin: var(--space-4) 0 0;
  padding-top: var(--space-3);
  border-top: 1px dotted var(--color-contrast-line);
  font-size: var(--text-xs);
  line-height: 1.7;
  color: color-mix(in srgb, var(--color-contrast-ink) 72%, var(--color-contrast-surface));
}

/* ---------- 区块通用 ---------- */

.page-solutions .sol-section {
  padding: var(--section-y) 0;
}

.page-solutions .sol-section + .sol-section {
  border-top: 1px solid var(--color-line);
}

.page-solutions .sol-section--lg {
  padding-bottom: var(--section-y-lg);
}

.page-solutions .sol-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.page-solutions .sol-band__num {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-primary);
}

.page-solutions .sol-band__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

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

.page-solutions .sol-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  align-items: start;
}

.page-solutions .sol-pane {
  min-width: 0;
}

.page-solutions .sol-pane--deep {
  padding: var(--space-4) var(--space-3);
  background: var(--color-surface-deep);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
}

.page-solutions .sol-pane__note {
  margin: var(--space-3) 0 0;
  padding-top: var(--space-2);
  border-top: 1px dotted var(--color-line);
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

.page-solutions .sol-p {
  margin: 0 0 var(--space-3);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
  max-width: var(--measure);
}

.page-solutions .sol-p--tight {
  margin-top: var(--space-4);
  color: var(--color-ink-soft);
}

.page-solutions .sol-spec {
  margin: var(--space-4) 0;
  border-top: 1px solid var(--color-line);
}

.page-solutions .sol-spec__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: calc(var(--space-1) / 2);
  padding: var(--space-2) 0;
  border-bottom: 1px dotted var(--color-line);
}

.page-solutions .sol-spec__k {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-primary);
}

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

/* ---------- 图 ---------- */

.page-solutions .sol-figure {
  margin: 0;
  padding: var(--space-2);
  background: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
}

.page-solutions .sol-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-deep);
  border-radius: var(--radius-sm);
}

.page-solutions .sol-figure figcaption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

.page-solutions .sol-figure--alt {
  background: var(--color-surface);
}

.page-solutions .sol-figure--square img {
  aspect-ratio: 1 / 1;
}

/* ---------- 折叠面板内的验证清单 ---------- */

.page-solutions .accordion {
  margin-top: var(--space-4);
}

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

.page-solutions .sol-verify li {
  padding: var(--space-2) 0;
  border-bottom: 1px dotted var(--color-line);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-solutions .sol-verify li:last-child {
  border-bottom: 0;
}

.page-solutions .sol-verify__k {
  display: inline-block;
  min-width: 5.4em;
  margin-right: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
}

/* ---------- 核对清单四组 ---------- */

.page-solutions .sol-checklist {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.page-solutions .sol-checkgroup {
  padding-left: var(--space-3);
  border-left: 2px solid var(--color-highlight);
}

.page-solutions .sol-checkgroup__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.page-solutions .sol-checkgroup ol {
  margin: 0;
  padding-left: 1.3em;
  font-size: var(--text-sm);
  line-height: 1.72;
  color: var(--color-ink-soft);
}

.page-solutions .sol-checkgroup li + li {
  margin-top: calc(var(--space-1) / 2);
}

/* ---------- 六条轮换线图例 ---------- */

.page-solutions .sol-legend {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--color-line);
}

.page-solutions .sol-legend__row {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) auto;
  align-items: baseline;
  gap: var(--space-2);
  padding: calc(var(--space-1) + 2px) 0;
  border-bottom: 1px dotted var(--color-line);
}

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

.page-solutions .sol-legend__name {
  font-size: var(--text-sm);
  color: var(--color-ink);
  overflow-wrap: break-word;
}

.page-solutions .sol-legend__meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
  white-space: nowrap;
}

/* ---------- 边界两列 ---------- */

.page-solutions .sol-boundary {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
}

.page-solutions .sol-boundary__title {
  margin: 0 0 var(--space-3);
  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-solutions .sol-boundary__col ul {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--color-line);
}

.page-solutions .sol-boundary__col li {
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr);
  gap: var(--space-2);
  padding: calc(var(--space-1) + 3px) 0;
  border-bottom: 1px dotted var(--color-line);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

.page-solutions .sol-boundary__col li::before {
  content: "";
  width: 14px;
  height: 2px;
  margin-top: 0.72em;
  background: var(--color-accent);
}

.page-solutions .sol-boundary--no li::before {
  background: var(--color-ink-muted);
}

/* ---------- 入口图例 ---------- */

.page-solutions .sol-routes {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--color-line);
}

.page-solutions .sol-route {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px dotted var(--color-line);
}

.page-solutions .sol-route__mark {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  line-height: 1.1;
  color: var(--color-primary);
}

.page-solutions .sol-route__title {
  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-solutions .sol-route__desc {
  margin: 0 0 var(--space-2);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-solutions .sol-route__link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid var(--color-accent);
  padding-bottom: 2px;
  transition: color 140ms linear, border-color 140ms linear;
}

.page-solutions .sol-route__link:hover,
.page-solutions .sol-route__link:focus-visible {
  color: var(--color-focus);
  border-bottom-color: var(--color-focus);
}

.page-solutions .sol-closing {
  max-width: var(--measure);
  margin: var(--space-6) 0 0;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-line);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-solutions .sol-closing a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid var(--color-accent);
}

.page-solutions .sol-closing a:hover,
.page-solutions .sol-closing a:focus-visible {
  color: var(--color-focus);
  border-bottom-color: var(--color-focus);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-solutions .sol-spec__row {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: var(--space-3);
  }

  .page-solutions .sol-checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-solutions .sol-hero__split {
    grid-template-columns: 5fr 7fr;
  }

  .page-solutions .sol-hero__left,
  .page-solutions .sol-hero__right {
    padding: var(--space-4);
  }
}

@media (min-width: 900px) {
  .page-solutions .sol-band {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: var(--space-4);
    align-items: start;
  }

  .page-solutions .sol-band__num {
    font-size: var(--text-4xl);
  }

  .page-solutions .sol-split {
    gap: var(--space-6);
  }

  .page-solutions .sol-split--7-5 {
    grid-template-columns: 7fr 5fr;
  }

  .page-solutions .sol-split--5-7 {
    grid-template-columns: 5fr 7fr;
  }

  .page-solutions .sol-split--8-4 {
    grid-template-columns: 8fr 4fr;
  }

  .page-solutions .sol-boundary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0;
  }

  .page-solutions .sol-boundary__col:first-child {
    padding-right: var(--space-6);
  }

  .page-solutions .sol-boundary__col + .sol-boundary__col {
    padding-left: var(--space-6);
    border-left: 1px dotted var(--color-ink-muted);
  }

  .page-solutions .sol-section--lg {
    padding-bottom: var(--section-y-lg);
  }
}

@media (min-width: 1100px) {
  .page-solutions .sol-hero__right {
    padding: var(--space-6) var(--space-4);
  }

  .page-solutions .sol-hero__left {
    padding: var(--space-6) var(--space-4);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-solutions .sol-crumbs a,
  .page-solutions .sol-route__link {
    transition: none;
  }
}
<<<END>>>