.page-solutions {
  --sol-note-width: 100%;
}

/* ---------- 首屏 ---------- */

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

.page-solutions .sol-hero-frame {
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  background-image: repeating-linear-gradient(
    90deg,
    var(--color-line) 0 1px,
    transparent 1px 24px
  );
  background-size: 100% 6px;
  background-repeat: no-repeat;
  background-position: top left;
  padding: var(--space-4) var(--space-3) var(--space-4);
}

/* 关键数字横排 */
.page-solutions .sol-metrics {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  padding-block: var(--space-2) var(--space-4);
  border-bottom: var(--border-thin) solid var(--color-line);
  margin-bottom: var(--space-6);
}

.page-solutions .sol-metric {
  display: grid;
  gap: var(--space-1);
  border-left: 3px solid var(--color-primary);
  padding-left: var(--space-2);
}

.page-solutions .sol-metric-num {
  font-family: var(--font-heading);
  font-size: var(--text-figure);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-surface);
  margin-left: -2px;
}

.page-solutions .sol-metric-label {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  color: var(--color-primary);
}

.page-solutions .sol-metric-note {
  font-size: var(--text-xs);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

/* 标题与索引表 */
.page-solutions .sol-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
}

.page-solutions .sol-hero-copy h1 {
  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: var(--space-2) 0 var(--space-3);
  padding-left: var(--space-3);
  border-left: 3px solid var(--color-primary);
}

.page-solutions .sol-hero-copy .lede {
  max-width: var(--measure);
  font-size: var(--text-base);
}

.page-solutions .sol-index {
  overflow-x: auto;
}

.page-solutions .sol-index-table {
  width: 100%;
  min-width: 320px;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.page-solutions .sol-index-table th,
.page-solutions .sol-index-table td {
  text-align: left;
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  vertical-align: baseline;
}

.page-solutions .sol-index-table thead th {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  padding-block: var(--space-1);
}

.page-solutions .sol-index-table tbody th {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-sm);
  color: var(--color-ink);
  white-space: nowrap;
}

.page-solutions .sol-index-table td {
  color: var(--color-ink-soft);
  font-variant-numeric: tabular-nums;
}

.page-solutions .sol-index-table td.num {
  font-family: var(--font-mono);
  color: var(--color-ink);
}

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

/* ---------- 文档布局 ---------- */

.page-solutions .doc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  padding-block: var(--space-6) var(--section-y);
}

.page-solutions .toc-rail {
  font-family: var(--font-heading);
}

.page-solutions .toc-rail-title {
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  margin: 0 0 var(--space-2);
}

.page-solutions .toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.page-solutions .rail-link {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-1);
  padding: 0 0 var(--space-1);
  border-bottom: 2px solid transparent;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  text-decoration: none;
  transition: color 120ms ease, border-color 120ms ease;
}

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

.page-solutions .rail-link.is-current {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.page-solutions .rail-index {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-solutions .rail-link.is-current .rail-index {
  color: var(--color-primary);
}

/* ---------- 栅格兜底 ---------- */

.page-solutions .grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-4);
}

.page-solutions .grid-12 > [class*="span-"] {
  grid-column: 1 / -1;
}

/* ---------- 方案分组 ---------- */

.page-solutions .sol-group {
  padding-top: var(--space-8);
}

.page-solutions .sol-group:first-child {
  padding-top: 0;
}

.page-solutions .sol-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  align-items: start;
  margin-bottom: var(--space-6);
  padding-left: var(--space-3);
  border-left: 3px solid var(--color-primary);
}

.page-solutions .sol-group-badge {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  line-height: 1;
  font-weight: var(--weight-heading);
  color: var(--color-contrast-ink);
  background: var(--color-contrast-surface);
  border-radius: var(--radius-md);
  padding: var(--space-1) var(--space-2);
}

.page-solutions .sol-group h2 {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-2);
}

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

/* 要点 */
.page-solutions .sol-points {
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-solutions .sol-points li {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-solutions .sol-point-key {
  font-family: var(--font-heading);
  color: var(--color-primary);
}

/* 条目 */
.page-solutions .sol-entries {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.page-solutions .sol-entry {
  background: var(--color-surface-alt);
  border-top: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}

.page-solutions .sol-entry-title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  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-entry-num {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

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

/* 字段展开 */
.page-solutions .disclosure {
  margin-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-solutions .disclosure summary {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  color: var(--color-primary);
  cursor: pointer;
  padding: var(--space-1) 0;
  list-style: none;
}

.page-solutions .disclosure summary::-webkit-details-marker {
  display: none;
}

.page-solutions .disclosure summary::before {
  content: "[+] ";
  font-family: var(--font-mono);
}

.page-solutions .disclosure[open] summary::before {
  content: "[−] ";
}

.page-solutions .sol-fields {
  list-style: none;
  margin: 0 0 var(--space-1);
  padding: var(--space-2);
  background: var(--color-surface-deep);
  border-radius: var(--radius-sm);
  display: grid;
  gap: var(--space-1);
}

.page-solutions .sol-fields li {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-solutions .sol-field-type {
  color: var(--color-ink-muted);
  white-space: nowrap;
}

/* 图片 */
.page-solutions .sol-group-figure {
  margin: 0;
}

.page-solutions .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

/* 窄注释 */
.page-solutions .sol-note {
  max-width: var(--sol-note-width);
  margin-top: var(--space-6);
  padding-left: var(--space-3);
  border-left: 3px solid var(--color-primary);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-solutions .sol-note p {
  margin: 0;
}

.page-solutions .sol-note--alert {
  border-left-color: var(--color-accent);
  background: var(--color-highlight);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: var(--space-2) var(--space-2) var(--space-2) var(--space-3);
  color: var(--color-ink);
}

/* ---------- 对照表 ---------- */

.page-solutions .sol-compare-wrap {
  overflow-x: auto;
}

.page-solutions .sol-compare-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.page-solutions .sol-compare-table th,
.page-solutions .sol-compare-table td {
  text-align: left;
  padding: var(--space-2) var(--space-2) var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  vertical-align: top;
}

.page-solutions .sol-compare-table thead th {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  padding-block: var(--space-1);
}

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

.page-solutions .sol-compare-table tbody th::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  margin-right: var(--space-1);
  vertical-align: middle;
  background: transparent;
  transition: background-color 120ms ease;
}

.page-solutions .sol-compare-table td {
  color: var(--color-ink-soft);
  font-variant-numeric: tabular-nums;
}

.page-solutions .sol-compare-table td.num {
  font-family: var(--font-mono);
  color: var(--color-ink);
}

.page-solutions .sol-compare-table tbody tr {
  transition: background-color 120ms ease;
}

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

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

/* ---------- 选用建议 ---------- */

.page-solutions .sol-picks {
  margin-top: var(--space-6);
}

.page-solutions .sol-picks h3 {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-3);
  padding-left: var(--space-3);
  border-left: 3px solid var(--color-primary);
}

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

.page-solutions .sol-picks li {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-solutions .sol-pick-key {
  font-family: var(--font-heading);
  color: var(--color-primary);
}

/* ---------- 延伸阅读 ---------- */

.page-solutions .sol-links {
  margin-top: var(--space-6);
  display: grid;
  gap: var(--space-2);
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-solutions .sol-links p {
  margin: 0;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-solutions .sol-points li {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: var(--space-3);
    align-items: baseline;
  }

  .page-solutions .sol-picks li {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: var(--space-3);
    align-items: baseline;
  }

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

@media (min-width: 720px) {
  .page-solutions .sol-metrics {
    grid-template-columns: 1fr 1.4fr 1fr 1.2fr;
    gap: var(--space-4);
  }
}

@media (min-width: 900px) {
  .page-solutions .sol-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: var(--space-6);
  }

  .page-solutions .span-5 {
    grid-column: span 5;
  }

  .page-solutions .span-7 {
    grid-column: span 7;
  }

  .page-solutions {
    --sol-note-width: 58%;
  }
}

@media (min-width: 960px) {
  .page-solutions .doc-layout {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: var(--space-6);
  }

  .page-solutions .toc-rail {
    position: sticky;
    top: var(--space-4);
    align-self: start;
  }

  .page-solutions .toc-list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
  }

  .page-solutions .rail-link {
    display: flex;
    padding: var(--space-1) 0 var(--space-1) var(--space-2);
    border-bottom: none;
    border-left: 3px solid transparent;
  }

  .page-solutions .rail-link:hover,
  .page-solutions .rail-link:focus-visible {
    background: var(--color-primary-soft);
  }

  .page-solutions .rail-link.is-current {
    border-left-color: var(--color-primary);
    border-bottom-color: transparent;
    background: var(--color-primary-soft);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-solutions .rail-link,
  .page-solutions .sol-compare-table tbody tr,
  .page-solutions .sol-compare-table tbody th::before {
    transition-duration: 0ms;
  }
}