.page-solutions {
  --sol-track-min: 148px;
}

.page-solutions .sol-crumb {
  padding-block: var(--space-3);
}

.page-solutions .sol-crumb-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-solutions .sol-crumb-item a {
  color: var(--color-ink-soft);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-solutions .sol-crumb-item a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.page-solutions .sol-crumb-sep {
  color: var(--color-line);
}

/* 六段进度轨 */
.page-solutions .sol-track {
  width: 100%;
  background: var(--color-contrast-surface);
  border-block: var(--border-thin) solid var(--color-contrast-line);
}

.page-solutions .sol-track-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(6, minmax(var(--sol-track-min), 1fr));
  overflow-x: auto;
  overscroll-behavior-x: contain;
}

.page-solutions .sol-track-item {
  border-left: var(--border-thin) solid var(--color-contrast-line);
  min-width: 0;
}

.page-solutions .sol-track-item:first-child {
  border-left: 0;
}

.page-solutions .sol-track-link {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3);
  text-decoration: none;
  color: var(--color-contrast-ink);
  min-height: 100%;
  transition: background-color 0.18s ease;
}

.page-solutions .sol-track-link:hover,
.page-solutions .sol-track-link:focus-visible {
  background: color-mix(in srgb, var(--color-contrast-ink) 8%, transparent);
}

.page-solutions .sol-track-tick {
  display: block;
  width: 26px;
  height: 4px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
}

.page-solutions .sol-track-link[data-cat="b"] .sol-track-tick {
  background: color-mix(in srgb, var(--color-primary) 80%, var(--color-contrast-accent));
}

.page-solutions .sol-track-link[data-cat="c"] .sol-track-tick {
  background: color-mix(in srgb, var(--color-primary) 60%, var(--color-contrast-accent));
}

.page-solutions .sol-track-link[data-cat="d"] .sol-track-tick {
  background: color-mix(in srgb, var(--color-primary) 40%, var(--color-contrast-accent));
}

.page-solutions .sol-track-link[data-cat="e"] .sol-track-tick {
  background: color-mix(in srgb, var(--color-primary) 20%, var(--color-contrast-accent));
}

.page-solutions .sol-track-link[data-cat="f"] .sol-track-tick {
  background: var(--color-contrast-accent);
}

.page-solutions .sol-track-num {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  letter-spacing: 0.04em;
  color: var(--color-contrast-accent);
}

.page-solutions .sol-track-act {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: color-mix(in srgb, var(--color-contrast-ink) 72%, transparent);
}

/* 首屏 */
.page-solutions .sol-hero {
  padding-block: var(--space-8) var(--space-6);
}

.page-solutions .sol-hero-inner {
  display: grid;
  gap: var(--space-6);
}

.page-solutions .sol-hero-eyebrow {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin: 0 0 var(--space-3);
}

.page-solutions .sol-hero-title {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-3);
  max-width: 20ch;
}

.page-solutions .sol-hero-lead {
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: var(--measure);
  margin: 0 0 var(--space-4);
}

.page-solutions .sol-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0;
}

.page-solutions .sol-hero-panel {
  background: var(--color-contrast-surface);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  display: grid;
  gap: var(--space-4);
}

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

.page-solutions .sol-figure-cell {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: var(--space-1) var(--space-2);
  padding-bottom: var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-solutions .sol-figure-cell:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-solutions .sol-figure-num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 1;
  color: var(--color-contrast-accent);
}

.page-solutions .sol-figure-label {
  font-size: var(--text-base);
  color: var(--color-contrast-ink);
}

.page-solutions .sol-figure-note {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.page-solutions .sol-hero-figure {
  margin: 0;
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-solutions .sol-hero-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 16 / 7.6;
}

.page-solutions .sol-hero-caption {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 70%, transparent);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

/* 阶段 */
.page-solutions .sol-stage-wrap {
  padding-block: var(--section-y);
}

.page-solutions .sol-stage-wrap--alt {
  background: var(--color-surface-alt);
  border-block: var(--border-thin) solid var(--color-line);
}

.page-solutions .sol-stage {
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  box-shadow: var(--shadow-1);
}

.page-solutions .sol-stage-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  gap: var(--space-2) var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-primary-soft);
  border-bottom: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  cursor: pointer;
  list-style: none;
}

.page-solutions .sol-stage-head::-webkit-details-marker {
  display: none;
}

.page-solutions .sol-stage-head::after {
  content: "";
  width: 8px;
  height: 8px;
  border-right: var(--border-thin) solid var(--color-ink-soft);
  border-bottom: var(--border-thin) solid var(--color-ink-soft);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.page-solutions .sol-stage[open] > .sol-stage-head::after {
  transform: rotate(-135deg);
}

.page-solutions .sol-stage-kicker {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-primary);
}

.page-solutions .sol-stage-title {
  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-stage-range {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

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

.page-solutions .sol-intro {
  display: grid;
  gap: var(--space-4);
  align-items: start;
}

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

.page-solutions .sol-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-solutions .sol-point {
  position: relative;
  padding-left: var(--space-4);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-solutions .sol-point::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 10px;
  height: 3px;
  background: var(--color-primary);
}

/* 步骤 */
.page-solutions .sol-step {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-1);
  scroll-margin-top: var(--space-8);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.page-solutions .sol-step:hover {
  transform: translateY(-2px);
  border-color: var(--color-ink-muted);
}

.page-solutions .sol-step:target {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 var(--border-thin) var(--color-accent), var(--shadow-1);
}

.page-solutions .sol-step-side {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.page-solutions .sol-step-tick {
  width: 22px;
  height: 5px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
}

.page-solutions .sol-step[data-cat="b"] .sol-step-tick {
  background: color-mix(in srgb, var(--color-primary) 80%, var(--color-accent));
}

.page-solutions .sol-step[data-cat="c"] .sol-step-tick {
  background: color-mix(in srgb, var(--color-primary) 60%, var(--color-accent));
}

.page-solutions .sol-step[data-cat="d"] .sol-step-tick {
  background: color-mix(in srgb, var(--color-primary) 40%, var(--color-accent));
}

.page-solutions .sol-step[data-cat="e"] .sol-step-tick {
  background: color-mix(in srgb, var(--color-primary) 20%, var(--color-accent));
}

.page-solutions .sol-step[data-cat="f"] .sol-step-tick {
  background: var(--color-accent);
}

.page-solutions .sol-step-num {
  font-family: var(--font-mono);
  font-size: calc(var(--text-4xl) * 1.5);
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: color-mix(in srgb, var(--color-ink) 22%, transparent);
}

.page-solutions .sol-step:target .sol-step-num {
  color: var(--color-accent);
}

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

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

.page-solutions .sol-step-check {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3);
  background: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
}

.page-solutions .sol-check-block {
  display: grid;
  gap: var(--space-1);
}

.page-solutions .sol-check-block--result {
  padding-top: var(--space-2);
  border-top: var(--border-thin) dashed var(--color-line);
}

.page-solutions .sol-check-label {
  margin: 0;
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.page-solutions .sol-check-block--result .sol-check-label {
  color: var(--color-accent);
}

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

/* 图片 */
.page-solutions .sol-figure {
  margin: 0;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-surface);
}

.page-solutions .sol-figure-media {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-solutions .sol-figure-caption {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
  border-top: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-alt);
}

.page-solutions .sol-figure--inline {
  max-width: 720px;
}

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

/* 区块头 */
.page-solutions .sol-sec-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  align-items: start;
  padding-bottom: var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
  margin-bottom: var(--space-4);
}

.page-solutions .sol-sec-num {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  line-height: 1;
  color: var(--color-highlight);
  -webkit-text-stroke: var(--border-thin) var(--color-accent);
}

.page-solutions .sol-sec-title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-1);
}

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

/* 确认清单 */
.page-solutions .sol-checklist-sec {
  padding-block: var(--section-y-lg);
  background: var(--color-surface-deep);
  border-block: var(--border-thin) solid var(--color-line);
}

.page-solutions .sol-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-solutions .sol-check-item {
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.page-solutions .sol-check-row {
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr);
  align-items: start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
}

.page-solutions .sol-check-input {
  width: 17px;
  height: 17px;
  margin: 2px 0 0;
  accent-color: var(--color-accent);
  cursor: pointer;
}

.page-solutions .sol-check-num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

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

.page-solutions .sol-check-input:checked ~ .sol-check-num {
  color: var(--color-accent);
}

.page-solutions .sol-check-input:checked ~ .sol-check-text {
  color: var(--color-ink-soft);
}

/* 偏差 */
.page-solutions .sol-dev-sec {
  padding-block: var(--section-y);
}

.page-solutions .sol-deviations {
  display: grid;
  gap: var(--space-3);
}

.page-solutions .sol-dev {
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-1);
}

.page-solutions .sol-dev-title {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  margin: 0 0 var(--space-2);
  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-dev-num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-accent);
  border-bottom: 3px solid var(--color-highlight);
}

.page-solutions .sol-dev[data-cat="b"] .sol-dev-num,
.page-solutions .sol-dev[data-cat="e"] .sol-dev-num {
  border-bottom-color: var(--color-primary-soft);
}

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

/* 相关入口 */
.page-solutions .sol-routes-sec {
  padding-block: var(--space-8) var(--section-y-lg);
  background: var(--color-surface-alt);
  border-top: var(--border-thin) solid var(--color-line);
}

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

.page-solutions .sol-route {
  padding: var(--space-4);
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-1);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.page-solutions .sol-route:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
}

.page-solutions .sol-route-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-primary-ink);
  background: var(--color-primary);
  padding: 2px var(--space-1);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-2);
}

.page-solutions .sol-route-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
}

.page-solutions .sol-route-title a {
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-solutions .sol-route-title a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

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

@media (min-width: 720px) {
  .page-solutions .sol-track-list {
    grid-template-columns: repeat(6, 1fr);
    overflow-x: visible;
  }

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

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

@media (min-width: 960px) {
  .page-solutions .sol-hero {
    padding-block: var(--section-y-lg) var(--section-y);
  }

  .page-solutions .sol-hero-inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(320px, 1fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-solutions .sol-intro {
    grid-template-columns: minmax(280px, 1fr) minmax(0, 1.15fr);
    gap: var(--space-6);
  }

  .page-solutions .sol-step {
    grid-template-columns: 120px minmax(0, 1fr) minmax(260px, 320px);
    align-items: start;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-6) var(--space-4) var(--space-4);
  }

  .page-solutions .sol-step-side {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .page-solutions .sol-stage-body {
    padding: var(--space-6);
  }
}

@media (min-width: 1100px) {
  .page-solutions .sol-deviations {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-solutions .sol-routes {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-solutions .sol-step,
  .page-solutions .sol-route,
  .page-solutions .sol-stage-head::after {
    transition: none;
  }

  .page-solutions .sol-step:hover,
  .page-solutions .sol-route:hover {
    transform: none;
  }
}