.page-solutions {
  display: block;
  background-color: var(--color-surface);
}

/* ============ 首屏 ============ */
.page-solutions .sol-hero {
  position: relative;
  overflow: hidden;
  border-bottom: var(--border-thin) solid var(--color-line);
  background:
    radial-gradient(120% 92% at 84% 10%,
      color-mix(in srgb, var(--color-primary) 22%, transparent) 0%,
      transparent 60%),
    radial-gradient(90% 70% at 6% 96%,
      color-mix(in srgb, var(--color-accent) 9%, transparent) 0%,
      transparent 62%),
    var(--color-surface);
}

.page-solutions .sol-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--color-line) var(--border-thin), transparent var(--border-thin)),
    linear-gradient(to bottom, var(--color-line) var(--border-thin), transparent var(--border-thin));
  background-size: var(--space-8) var(--space-8);
  opacity: 0.42;
  pointer-events: none;
}

.page-solutions .sol-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  padding-top: var(--space-6);
  padding-bottom: var(--space-8);
}

.page-solutions .sol-hero__col {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.page-solutions .sol-hero__col .breadcrumb {
  margin-bottom: var(--space-2);
}

.page-solutions .sol-hero__title {
  margin: 0;
  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);
  color: var(--color-ink);
  text-wrap: balance;
}

.page-solutions .sol-hero__sub {
  margin: 0;
  max-width: 44ch;
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-solutions .sol-hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-3);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
}

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

.page-solutions .sol-hero__num {
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-primary);
}

.page-solutions .sol-hero__lab {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-ink-muted);
}

.page-solutions .sol-hero__block {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: var(--border-thin) solid var(--color-primary);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg,
      color-mix(in srgb, var(--color-primary) 26%, var(--color-surface-alt)) 0%,
      var(--color-surface-alt) 44%,
      var(--color-surface-deep) 100%);
  box-shadow: 0 0 44px -20px var(--color-primary);
}

.page-solutions .sol-hero__block::before {
  content: "";
  position: absolute;
  inset: var(--space-3);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 42%, transparent);
  border-radius: var(--radius-md);
}

.page-solutions .sol-hero__block::after {
  content: "";
  position: absolute;
  right: var(--space-3);
  bottom: var(--space-3);
  width: var(--space-6);
  height: var(--space-6);
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-primary) 0%, color-mix(in srgb, var(--color-primary) 45%, var(--color-accent)) 100%);
  box-shadow: 0 0 28px -6px var(--color-primary);
}

.page-solutions .sol-hero__blockmark {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

/* ============ 通用区块头 ============ */
.page-solutions .sol-head {
  max-width: var(--measure);
  margin-bottom: var(--space-8);
  padding-left: var(--space-3);
  border-left: var(--border-thin) solid var(--color-primary);
}

.page-solutions .sol-head--accent {
  border-left-color: var(--color-accent);
}

.page-solutions .sol-head__title {
  margin: var(--space-2) 0 0;
  padding-left: var(--space-3);
  border-left: var(--border-thin) solid var(--color-primary);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-solutions .sol-head__title--accent {
  border-left-color: var(--color-accent);
}

.page-solutions .sol-head--accent .sol-head__title {
  border-left-color: var(--color-accent);
}

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

/* ============ 桌型分段标签 ============ */
.page-solutions .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-solutions .tab {
  appearance: none;
  padding: var(--space-1) var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-solutions .tab:hover {
  color: var(--color-ink);
  border-color: color-mix(in srgb, var(--color-accent) 60%, transparent);
}

.page-solutions .tab[aria-selected="true"] {
  color: var(--color-ink);
  border-color: var(--color-accent);
  box-shadow: 0 0 20px -8px var(--color-accent);
}

.page-solutions .tab:focus-visible {
  outline: var(--border-thin) solid var(--color-focus);
  outline-offset: var(--space-1);
}

/* ============ 方案块 ============ */
.page-solutions .sol-plan {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: start;
}

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

.page-solutions .sol-plan__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-solutions .sol-plan__kicker {
  margin: 0;
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

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

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

/* ============ 字段清单 ============ */
.page-solutions .sol-facts {
  margin: var(--space-3) 0 0;
}

.page-solutions .sol-facts__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

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

.page-solutions .sol-facts__k {
  margin: 0;
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

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

/* ============ 禁手区 ============ */
.page-solutions .sol-ban {
  border-top: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
}

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

.page-solutions .sol-ban__lead {
  margin: var(--space-3) 0 0;
  max-width: 52ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-solutions .sol-ban__list {
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-2);
}

.page-solutions .sol-ban__list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-2);
  align-items: baseline;
  padding: var(--space-2) var(--space-3);
  border-left: var(--border-thin) solid var(--color-accent);
  background: color-mix(in srgb, var(--color-surface-deep) 55%, transparent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-ink);
}

.page-solutions .sol-ban__n {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-accent);
  line-height: 1.2;
}

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

/* ============ 段位阶梯 ============ */
.page-solutions .sol-stair {
  position: relative;
  overflow: hidden;
  border-top: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
  background: var(--color-surface);
}

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

.page-solutions .sol-stair__scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg,
      color-mix(in srgb, var(--color-surface) 80%, transparent) 0%,
      color-mix(in srgb, var(--color-surface) 90%, transparent) 100%),
    linear-gradient(90deg,
      color-mix(in srgb, var(--color-surface) 70%, transparent) 0%,
      transparent 80%);
}

.page-solutions .sol-stair__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  padding-top: var(--section-y);
  padding-bottom: var(--section-y);
}

.page-solutions .sol-route {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-left: var(--space-3);
  border-left: var(--border-thin) solid var(--color-accent);
}

.page-solutions .sol-route__k {
  margin: 0;
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.page-solutions .sol-route__title {
  margin: 0;
  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-route__body {
  margin: 0;
  max-width: 46ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ============ 残局与赛季双卡 ============ */
.page-solutions .sol-pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.page-solutions .sol-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
  border: var(--border-thin) solid var(--color-line);
  border-top: var(--border-thin) solid var(--color-accent);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface-alt) 78%, transparent);
}

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

.page-solutions .sol-card .sol-facts {
  margin-top: var(--space-2);
}

.page-solutions .sol-card__link {
  margin: var(--space-4) 0 0;
}

/* ============ 对照表 ============ */
.page-solutions .sol-compare-sec {
  border-top: var(--border-thin) solid var(--color-line);
}

.page-solutions .sol-compare {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
  font-size: var(--text-base);
}

.page-solutions .sol-compare__cap {
  padding: 0 0 var(--space-3);
  text-align: left;
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-solutions .sol-compare th,
.page-solutions .sol-compare td {
  padding: var(--space-3);
  text-align: left;
  vertical-align: top;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-solutions .sol-compare thead th {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.06em;
  white-space: nowrap;
  color: var(--color-ink-soft);
  border-bottom: var(--border-thin) solid var(--color-primary);
}

.page-solutions .sol-compare tbody th {
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  white-space: nowrap;
}

.page-solutions .sol-compare tbody td {
  color: var(--color-ink-soft);
  line-height: 1.6;
}

.page-solutions .sol-compare tbody td .mono {
  color: var(--color-ink);
}

.page-solutions .sol-compare tbody tr:nth-child(odd) {
  background: var(--color-surface-alt);
}

.page-solutions .sol-compare tbody tr:hover {
  background: color-mix(in srgb, var(--color-primary) 13%, var(--color-surface-alt));
}

.page-solutions .sol-compare tbody tr:hover th {
  color: var(--color-primary);
}

/* ============ 折叠说明 ============ */
.page-solutions .sol-fold {
  margin-top: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface-deep) 62%, transparent);
}

.page-solutions .sol-fold > summary {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-ink-soft);
  cursor: pointer;
  list-style: none;
}

.page-solutions .sol-fold > summary::-webkit-details-marker {
  display: none;
}

.page-solutions .sol-fold > summary::before {
  content: "";
  flex: none;
  width: var(--space-1);
  height: var(--space-1);
  border-right: var(--border-thin) solid var(--color-primary);
  border-bottom: var(--border-thin) solid var(--color-primary);
  transform: rotate(-45deg);
  transition: transform 0.2s ease;
}

.page-solutions .sol-fold[open] > summary::before {
  transform: rotate(45deg);
}

.page-solutions .sol-fold > summary:focus-visible {
  outline: var(--border-thin) solid var(--color-focus);
  outline-offset: calc(var(--space-1) * -1);
}

.page-solutions .sol-fold p {
  margin: 0;
  padding: 0 var(--space-3) var(--space-3);
  max-width: 62ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ============ 下一步出口 ============ */
.page-solutions .sol-exit {
  border-top: var(--border-thin) solid var(--color-line);
  background: color-mix(in srgb, var(--color-surface-alt) 55%, var(--color-surface));
}

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

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

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

.page-solutions .sol-exit__list {
  margin: var(--space-6) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-solutions .sol-exit__list li {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-solutions .sol-exit__link {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-4) var(--space-2);
  text-decoration: none;
  transition: background 0.2s ease, padding-left 0.2s ease;
}

.page-solutions .sol-exit__link:hover,
.page-solutions .sol-exit__link:focus-visible {
  background: color-mix(in srgb, var(--color-primary) 10%, transparent);
  padding-left: var(--space-3);
}

.page-solutions .sol-exit__link:focus-visible {
  outline: var(--border-thin) solid var(--color-focus);
  outline-offset: calc(var(--space-1) * -1);
}

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

.page-solutions .sol-exit__note {
  margin: var(--space-6) 0 0;
  max-width: 58ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-solutions .sol-hero__stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-solutions .sol-facts__row {
    grid-template-columns: 8em 1fr;
    gap: var(--space-3);
    align-items: baseline;
  }

  .page-solutions .sol-ban__list li {
    grid-template-columns: 2.5em 1fr;
  }
}

@media (min-width: 900px) {
  .page-solutions .sol-hero__inner {
    grid-template-columns: 3fr 2fr;
    align-items: end;
    gap: var(--space-8);
    padding-top: var(--space-8);
    padding-bottom: var(--section-y);
  }

  .page-solutions .sol-hero__title {
    max-width: 10em;
  }

  .page-solutions .sol-hero__block {
    aspect-ratio: 5 / 4;
  }

  .page-solutions .sol-plan {
    grid-template-columns: 3fr 2fr;
    gap: var(--space-8);
  }

  .page-solutions .sol-ban__grid {
    grid-template-columns: 3fr 2fr;
    gap: var(--space-8);
    align-items: center;
  }

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

  .page-solutions .sol-pair {
    grid-template-columns: 3fr 2fr;
    gap: var(--space-8);
    align-items: start;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-solutions .tab,
  .page-solutions .sol-fold > summary::before,
  .page-solutions .sol-exit__link {
    transition: none;
  }
}