.page-solutions {
  --sol-chip-border: var(--border-thick);
  --sol-path-y: 30px;
}

/* ---------- 首屏 ---------- */
.page-solutions .sol-hero {
  position: relative;
  overflow: hidden;
  padding-top: var(--space-8);
  padding-bottom: 0;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-solutions .sol-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-solutions .sol-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.55;
}

.page-solutions .sol-hero__scrim {
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.page-solutions .sol-hero__inner {
  position: relative;
  z-index: 1;
}

.page-solutions .sol-hero__title {
  margin: var(--space-3) 0 var(--space-4);
  font-size: var(--text-display);
  line-height: 1.02;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-solutions .sol-hero__lead {
  max-width: 62ch;
  margin: 0;
  color: var(--color-contrast-ink);
  font-size: var(--text-lg);
  line-height: var(--leading-body);
}

/* ---------- 数字带 ---------- */
.page-solutions .sol-belt {
  position: relative;
  z-index: 1;
  margin-top: var(--space-8);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
  background-color: color-mix(in srgb, var(--color-contrast-surface) 82%, #000);
}

.page-solutions .sol-belt__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4) 0;
  margin: 0;
  padding: var(--space-6) 0;
  list-style: none;
}

.page-solutions .sol-belt__cell {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: 0 var(--space-3);
  border-left: var(--border-thin) solid var(--color-contrast-line);
}

.page-solutions .sol-belt__cell:nth-child(odd) {
  border-left: 0;
  padding-left: 0;
}

.page-solutions .sol-belt__num {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  line-height: 1;
  color: var(--color-contrast-accent);
}

.page-solutions .sol-belt__unit {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-contrast-ink);
  opacity: 0.86;
}

/* ---------- 业务色块条 ---------- */
.page-solutions .sol-strip {
  background-color: var(--color-surface);
  padding: var(--space-6) 0 var(--space-8);
}

.page-solutions .sol-strip__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-solutions .sol-chip {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-height: 132px;
  padding: var(--space-3) var(--space-3) var(--space-4);
  border: var(--sol-chip-border) solid var(--color-ink);
  box-shadow: var(--shadow-1);
  text-decoration: none;
  transition: box-shadow 180ms ease, transform 180ms ease, border-color 180ms ease;
}

.page-solutions .sol-chip__idx {
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.7;
}

.page-solutions .sol-chip__name {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  line-height: 1.1;
  letter-spacing: var(--tracking-heading);
}

.page-solutions .sol-chip__hint {
  font-size: var(--text-sm);
  line-height: 1.5;
  opacity: 0.86;
}

.page-solutions .sol-chip__go {
  margin-top: auto;
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 160ms ease;
}

.page-solutions .sol-chip--primary {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-solutions .sol-chip--accent {
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-solutions .sol-chip--highlight {
  background-color: var(--color-highlight);
  color: var(--color-ink);
}

.page-solutions .sol-chip--soft {
  background-color: var(--color-primary-soft);
  color: var(--color-ink);
}

.page-solutions .sol-chip--contrast {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-solutions .sol-chip:hover,
.page-solutions .sol-chip:focus-visible {
  z-index: 4;
  box-shadow: var(--shadow-2);
  transform: translate(-4px, -4px);
  border-color: var(--color-accent);
}

.page-solutions .sol-chip:hover .sol-chip__go,
.page-solutions .sol-chip:focus-visible .sol-chip__go {
  opacity: 1;
}

/* ---------- 业务陈列 ---------- */
.page-solutions .sol-business {
  background-color: var(--color-surface);
  padding-top: var(--space-2);
}

.page-solutions .sol-business__head {
  max-width: 62ch;
  margin-bottom: var(--space-8);
}

.page-solutions .sol-business__title {
  margin-top: var(--space-2);
  margin-bottom: var(--space-3);
}

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

.page-solutions .sol-biz {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  padding: var(--space-6) 0;
  border-top: var(--border-thick) double var(--color-ink);
}

.page-solutions .sol-biz:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.page-solutions .sol-biz__idx {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
}

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

.page-solutions .sol-biz__facts {
  display: grid;
  grid-template-columns: 1fr;
  margin: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-solutions .sol-biz__facts dt {
  padding: var(--space-2) 0 var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  border-bottom: 0;
}

.page-solutions .sol-biz__facts dd {
  margin: 0;
  padding: 0 0 var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
  color: var(--color-ink);
  line-height: var(--leading-body);
}

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

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

.page-solutions .sol-biz--wide .sol-biz__body {
  border-left: var(--border-thick) solid var(--color-accent);
  padding-left: var(--space-3);
}

/* ---------- 接力路径 ---------- */
.page-solutions .sol-path-section {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-solutions .sol-path__head {
  max-width: 60ch;
  margin-bottom: var(--space-8);
}

.page-solutions .sol-path__title {
  margin-top: var(--space-2);
  margin-bottom: var(--space-3);
  color: var(--color-contrast-ink);
}

.page-solutions .sol-path__lead {
  margin: 0;
  color: var(--color-contrast-ink);
  opacity: 0.88;
}

.page-solutions .sol-path {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-solutions .sol-path__svg {
  display: none;
}

.page-solutions .sol-path__node {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3);
  border: var(--border-thick) solid var(--color-contrast-line);
  background-color: color-mix(in srgb, var(--color-contrast-surface) 70%, #000);
}

.page-solutions .sol-path__step {
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
}

.page-solutions .sol-path__name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-lg);
  line-height: 1.2;
  color: var(--color-contrast-ink);
}

.page-solutions .sol-path__desc {
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-contrast-ink);
  opacity: 0.82;
}

/* ---------- 延伸方案 ---------- */
.page-solutions .sol-extend {
  background-color: var(--color-surface);
}

.page-solutions .sol-extend__head {
  max-width: 54ch;
  margin-bottom: var(--space-6);
}

.page-solutions .sol-extend__title {
  margin-top: var(--space-2);
  margin-bottom: 0;
}

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

.page-solutions .sol-extend__item {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  border: var(--border-thick) solid var(--color-ink);
  box-shadow: var(--shadow-2);
  background-color: var(--color-surface-alt);
  color: var(--color-ink);
  text-decoration: none;
  transition: box-shadow 180ms ease, transform 180ms ease, border-color 180ms ease;
}

.page-solutions .sol-extend__item:hover,
.page-solutions .sol-extend__item:focus-visible {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-2);
  transform: translate(-4px, -4px);
}

.page-solutions .sol-extend__name {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  line-height: 1.15;
  letter-spacing: var(--tracking-heading);
}

.page-solutions .sol-extend__desc {
  margin: 0;
  color: var(--color-ink-soft);
  line-height: var(--leading-body);
}

.page-solutions .sol-extend__go {
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
}

/* ---------- 行动出口 ---------- */
.page-solutions .sol-exit {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  padding: var(--space-8) 0;
}

.page-solutions .sol-exit__kicker {
  margin: 0 0 var(--space-4);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: 1.15;
  letter-spacing: var(--tracking-heading);
  color: var(--color-primary-ink);
}

.page-solutions .sol-exit__list {
  display: grid;
  grid-template-columns: 1fr;
  border-top: var(--border-thin) solid var(--color-primary-ink);
}

.page-solutions .sol-exit__link {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3) 0;
  border-bottom: var(--border-thin) solid var(--color-primary-ink);
  color: var(--color-primary-ink);
  text-decoration: none;
  transition: background-color 160ms ease, padding-left 160ms ease;
}

.page-solutions .sol-exit__link:hover,
.page-solutions .sol-exit__link:focus-visible {
  background-color: var(--color-contrast-surface);
  padding-left: var(--space-2);
}

.page-solutions .sol-exit__label {
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.page-solutions .sol-exit__text {
  font-size: var(--text-base);
  line-height: 1.5;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 720px) {
  .page-solutions .sol-biz__facts {
    grid-template-columns: minmax(96px, 140px) minmax(0, 1fr);
    column-gap: var(--space-3);
  }

  .page-solutions .sol-biz__facts dt {
    padding: var(--space-3) 0;
    border-bottom: var(--border-thin) solid var(--color-line);
  }

  .page-solutions .sol-biz__facts dd {
    padding: var(--space-3) 0;
  }
}

@media (min-width: 900px) {
  .page-solutions .sol-belt__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-solutions .sol-belt__cell {
    padding: 0 var(--space-4);
  }

  .page-solutions .sol-belt__cell:nth-child(odd) {
    padding-left: var(--space-4);
    border-left: var(--border-thin) solid var(--color-contrast-line);
  }

  .page-solutions .sol-belt__cell:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .page-solutions .sol-strip__inner {
    grid-template-columns: repeat(9, minmax(0, 1fr));
    padding-top: 0;
  }

  .page-solutions .sol-chip {
    min-height: 172px;
  }

  .page-solutions .sol-chip:nth-child(1) {
    grid-column: span 4;
  }

  .page-solutions .sol-chip:nth-child(2) {
    grid-column: span 5;
    margin-top: var(--space-3);
  }

  .page-solutions .sol-chip:nth-child(3) {
    grid-column: span 3;
  }

  .page-solutions .sol-chip:nth-child(4) {
    grid-column: span 6;
    margin-top: var(--space-1);
  }

  .page-solutions .sol-chip:nth-child(5) {
    grid-column: span 9;
    min-height: 108px;
  }

  .page-solutions .sol-biz {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
    gap: var(--space-6);
    padding: var(--space-8) 0;
  }

  .page-solutions .sol-biz--flip {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  }

  .page-solutions .sol-biz--flip .sol-biz__media {
    order: -1;
  }

  .page-solutions .sol-biz:nth-of-type(2n) {
    margin-left: var(--space-4);
  }

  .page-solutions .sol-biz--wide {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    margin-left: 0;
  }

  .page-solutions .sol-path {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
    padding-top: var(--space-6);
    color: var(--color-contrast-line);
  }

  .page-solutions .sol-path__svg {
    display: block;
    position: absolute;
    top: var(--space-3);
    left: var(--space-3);
    right: var(--space-3);
    width: calc(100% - var(--space-6));
    height: 2px;
    color: var(--color-contrast-accent);
  }

  .page-solutions .sol-path__node {
    border-top-color: var(--color-contrast-accent);
  }

  .page-solutions .sol-extend__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--space-4);
  }

  .page-solutions .sol-extend__item:nth-child(2) {
    margin-top: var(--space-6);
  }

  .page-solutions .sol-exit__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: var(--space-4);
  }

  .page-solutions .sol-exit__link {
    border-bottom: 0;
    border-left: var(--border-thin) solid var(--color-primary-ink);
    padding-left: var(--space-3);
  }

  .page-solutions .sol-exit__link:first-child {
    border-left: 0;
    padding-left: 0;
  }

  .page-solutions .sol-exit__link:hover,
  .page-solutions .sol-exit__link:focus-visible {
    padding-left: var(--space-4);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-solutions .sol-chip,
  .page-solutions .sol-extend__item,
  .page-solutions .sol-exit__link,
  .page-solutions .sol-chip__go {
    transition: none;
  }

  .page-solutions .sol-chip:hover,
  .page-solutions .sol-chip:focus-visible,
  .page-solutions .sol-extend__item:hover,
  .page-solutions .sol-extend__item:focus-visible {
    transform: none;
  }
}