.page-solutions {
  --sol-step-lead: calc(var(--space-8) + var(--space-2));
  --sol-rule-line: var(--border-thin) solid var(--color-line);
  --sol-soft-line: var(--border-thin) solid var(--color-surface-deep);
}

.page-solutions .sol-hero__kicker {
  margin: 0 0 var(--space-3);
}

.page-solutions .sol-hero__title {
  margin: 0 0 var(--space-4);
  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);
  max-width: 20ch;
}

.page-solutions .sol-hero__lede {
  max-width: var(--measure);
  margin: 0;
  color: var(--color-ink-soft);
}

.page-solutions .sol-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-8);
  align-items: start;
}

.page-solutions .sol-hero__media {
  margin: 0;
}

.page-solutions .sol-hero__media .media__body {
  padding: var(--space-4);
}

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

.page-solutions .sol-hero__stat {
  padding-top: var(--space-2);
  border-top: var(--sol-rule-line);
}

.page-solutions .sol-hero__stat .stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 1;
  color: var(--color-primary);
}

.page-solutions .sol-hero__stat .stat__label {
  display: block;
  margin-top: var(--space-2);
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
}

/* 技能树 SVG */
.page-solutions .sol-tree {
  display: block;
  width: 100%;
  height: auto;
}

.page-solutions .sol-tree__axis,
.page-solutions .sol-tree__tick,
.page-solutions .sol-tree__branch,
.page-solutions .sol-tree__link {
  fill: none;
  stroke: var(--color-contrast-line);
  stroke-width: 1;
}

.page-solutions .sol-tree__node {
  stroke: var(--color-contrast-accent);
  stroke-width: 2;
}

.page-solutions .sol-tree__idx {
  fill: var(--color-contrast-accent);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  text-anchor: middle;
}

.page-solutions .sol-tree__name {
  fill: var(--color-contrast-ink);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-anchor: start;
}

/* 路径区块 */
.page-solutions .sol-path__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2) var(--space-4);
  margin-bottom: var(--space-6);
}

.page-solutions .sol-path__num {
  font-family: var(--font-heading);
  font-size: var(--text-figure);
  line-height: 1;
  color: var(--color-primary);
  display: block;
}

.page-solutions .sol-path__title {
  margin: var(--space-2) 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  max-width: 24ch;
}

.page-solutions .sol-path__intro {
  max-width: var(--measure);
  margin: 0;
  color: var(--color-ink-soft);
}

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

.page-solutions .sol-path__head--flush {
  margin-bottom: 0;
}

.page-solutions .sol-path__figure {
  margin: 0;
}

.page-solutions .sol-path__band {
  margin: 0 0 var(--space-6);
}

.page-solutions .sol-path__band-body {
  padding: var(--space-4);
}

.page-solutions .sol-path__band-text {
  margin: var(--space-2) 0 0;
  color: var(--color-contrast-ink);
  max-width: 40ch;
}

/* 折叠 */
.page-solutions .sol-fold {
  border-top: var(--border-thick) solid var(--color-ink);
  padding-top: var(--space-3);
}

.page-solutions .sol-fold__toggle {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  cursor: pointer;
  list-style: none;
  padding: var(--space-2) 0;
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

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

.page-solutions .sol-fold__chev {
  color: var(--color-primary);
  font-size: var(--text-sm);
}

.page-solutions .sol-fold__txt--open {
  display: none;
}

.page-solutions .sol-fold[open] .sol-fold__txt--open {
  display: inline;
}

.page-solutions .sol-fold[open] .sol-fold__txt--closed {
  display: none;
}

.page-solutions .sol-fold__hint {
  margin-left: auto;
  color: var(--color-ink-muted);
  letter-spacing: 0.08em;
}

/* 步骤 */
.page-solutions .sol-steps {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
}

.page-solutions .sol-step {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
  padding: var(--space-4) 0 0;
  border-top: var(--sol-rule-line);
  margin-bottom: var(--space-6);
}

.page-solutions .sol-step:first-child {
  border-top: none;
}

.page-solutions .sol-step__num {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  line-height: 1;
  color: var(--color-primary);
  letter-spacing: 0.06em;
}

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

.page-solutions .sol-step__body p {
  margin: 0 0 var(--space-3);
  color: var(--color-ink);
  max-width: var(--measure);
}

.page-solutions .sol-step__meta {
  margin: 0;
  display: grid;
  gap: var(--space-1);
  border-top: var(--sol-soft-line);
  padding-top: var(--space-2);
}

.page-solutions .sol-step__meta-row {
  display: grid;
  grid-template-columns: minmax(0, 8ch) minmax(0, 1fr);
  gap: var(--space-2);
  align-items: baseline;
}

.page-solutions .sol-step__meta-row dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.page-solutions .sol-step__meta-row dd {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-solutions .sol-step__note {
  align-self: start;
}

.page-solutions .sol-step:hover .sol-step__note,
.page-solutions .sol-step:focus-within .sol-step__note {
  border-left-color: var(--color-accent);
}

/* 路径二 演示区 */
.page-solutions .sol-demo {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: var(--border-thick) solid var(--color-ink);
}

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

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

.page-solutions .sol-demo__bar {
  margin-top: var(--space-4);
  padding: var(--space-4);
  background: var(--color-surface-alt);
}

.page-solutions .sol-demo__count {
  margin: var(--space-3) 0 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-solutions .sol-demo__count .chip__count {
  color: var(--color-accent);
  font-size: var(--text-lg);
}

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

.page-solutions .sol-demo__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--border-thick) solid var(--color-ink);
}

.page-solutions .sol-demo__item {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3) 0;
  border-bottom: var(--sol-rule-line);
}

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

.page-solutions .sol-demo__name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  color: var(--color-ink);
}

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

.page-solutions .sol-demo__figure {
  margin: 0;
}

.page-solutions .sol-demo__caption {
  color: var(--color-ink-muted);
}

/* 收口区 */
.page-solutions .sol-closing__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-4);
}

.page-solutions .sol-closing__lede {
  margin: 0 0 var(--space-6);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

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

.page-solutions .sol-deviation {
  padding: var(--space-4) 0 0;
  border-top: var(--sol-rule-line);
}

.page-solutions .sol-deviation__idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-primary);
  padding-bottom: var(--space-1);
  border-bottom: var(--border-thin) solid var(--color-primary);
}

.page-solutions .sol-deviation__title {
  margin: var(--space-3) 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-solutions .sol-deviation p {
  margin: 0 0 var(--space-2);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

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

.page-solutions .sol-check {
  display: inline-block;
  width: 0.62em;
  height: 0.34em;
  margin-right: var(--space-1);
  border-left: var(--border-thick) solid var(--color-accent);
  border-bottom: var(--border-thick) solid var(--color-accent);
  transform: rotate(-45deg) translateY(-0.08em);
  vertical-align: middle;
  flex: none;
}

.page-solutions .sol-checks {
  list-style: none;
  margin: var(--space-3) 0 var(--space-6);
  padding: 0;
}

.page-solutions .sol-checks__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: var(--sol-soft-line);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-solutions .sol-checks__item .sol-check {
  margin-top: 0.5em;
}

.page-solutions .sol-closing__note {
  display: block;
}

.page-solutions a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.page-solutions a:hover,
.page-solutions a:focus-visible {
  color: var(--color-primary);
}

/* 响应式 */
@media (min-width: 720px) {
  .page-solutions .sol-path__head {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: start;
  }

  .page-solutions .sol-hero__stat:nth-child(2) {
    margin-left: var(--space-4);
  }

  .page-solutions .sol-hero__stat:nth-child(3) {
    margin-left: var(--space-8);
  }

  .page-solutions .sol-demo__item {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: baseline;
    column-gap: var(--space-4);
  }

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

@media (min-width: 960px) {
  .page-solutions .sol-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-8);
  }

  .page-solutions .sol-path__split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-8);
  }

  .page-solutions .sol-path__split--reverse {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-solutions .sol-step {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    column-gap: var(--space-6);
    padding-left: var(--sol-step-lead);
  }

  .page-solutions .sol-step__num {
    position: absolute;
    left: 0;
    top: var(--space-4);
    font-size: var(--text-3xl);
  }

  .page-solutions .sol-steps--compact .sol-step {
    grid-template-columns: minmax(0, 1fr);
    padding-left: var(--sol-step-lead);
  }

  .page-solutions .sol-steps--compact .sol-step__note {
    margin-top: var(--space-2);
  }

  .page-solutions .sol-demo__split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-8);
  }

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

@media (max-width: 719px) {
  .page-solutions .sol-hero__stat:nth-child(2),
  .page-solutions .sol-hero__stat:nth-child(3) {
    margin-left: 0;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-solutions * {
    animation: none !important;
    transition: none !important;
  }
}