.page-solutions {
  --sol-glass: color-mix(in srgb, var(--color-surface) 82%, transparent);
  --sol-ink-on-night: color-mix(in srgb, var(--color-contrast-ink) 82%, transparent);
  --sol-ink-on-primary: color-mix(in srgb, var(--color-primary-ink) 82%, transparent);
  --sol-hair-on-primary: color-mix(in srgb, var(--color-primary-ink) 30%, transparent);
}

/* ---------- 首屏 ---------- */
.page-solutions .sol-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--color-primary);
  color: var(--color-primary-ink);
  padding-block: var(--space-6) var(--section-y);
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

.page-solutions .sol-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -30% -12% auto -12%;
  height: 110%;
  background: radial-gradient(58% 68% at 80% 10%,
    color-mix(in srgb, var(--color-contrast-accent) 40%, transparent),
    transparent 72%);
  pointer-events: none;
}

.page-solutions .sol-breadcrumb {
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
}

.page-solutions .sol-breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  align-items: center;
}

.page-solutions .sol-breadcrumb li + li::before {
  content: "/";
  margin-right: var(--space-1);
  color: var(--sol-hair-on-primary);
}

.page-solutions .sol-breadcrumb a {
  color: var(--sol-ink-on-primary);
  text-decoration: none;
}

.page-solutions .sol-breadcrumb a:hover {
  color: var(--color-primary-ink);
}

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

.page-solutions .sol-eyebrow {
  color: var(--color-contrast-accent);
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin: 0;
}

.page-solutions .sol-title {
  font-size: var(--text-display);
  font-weight: 800;
  line-height: 1.03;
  letter-spacing: -0.012em;
  margin: var(--space-3) 0 0;
  max-width: 20ch;
}

.page-solutions .sol-lede {
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--sol-ink-on-primary);
  max-width: 44ch;
  margin: var(--space-4) 0 0;
}

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

.page-solutions .sol-lineup > li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  align-items: start;
  border-top: var(--border-thin) solid var(--sol-hair-on-primary);
  padding-top: var(--space-2);
}

.page-solutions .sol-lineup-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: 1;
  color: var(--color-contrast-accent);
}

.page-solutions .sol-lineup-name {
  margin: 0 0 4px;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-primary-ink);
}

.page-solutions .sol-lineup p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--sol-ink-on-primary);
}

.page-solutions .sol-hero-panel {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
}

.page-solutions .sol-panel-kicker {
  margin: 0;
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
  color: var(--color-primary-ink);
  opacity: 0.85;
}

.page-solutions .sol-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--sol-hair-on-primary);
}

.page-solutions .sol-metric-num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-figure);
  font-weight: 700;
  line-height: 0.95;
  color: var(--color-primary-ink);
}

.page-solutions .sol-metric-label {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--sol-ink-on-primary);
}

.page-solutions .sol-panel-note {
  margin: var(--space-3) 0 0;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--sol-hair-on-primary);
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--sol-ink-on-primary);
}

/* ---------- 通用章节骨架 ---------- */
.page-solutions .sol-section-head {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.page-solutions .chapter-number {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  line-height: 1;
}

.page-solutions .chapter-title {
  margin: 0;
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

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

/* ---------- 能力筛选 ---------- */
.page-solutions .sol-caps-section {
  background: var(--color-surface);
}

.page-solutions .sol-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

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

.page-solutions .sol-cap {
  position: relative;
  display: grid;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-3) var(--space-3) var(--space-4);
  background: var(--sol-glass);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-1);
  backdrop-filter: blur(8px);
}

.page-solutions .sol-cap::before {
  content: "";
  position: absolute;
  left: var(--space-2);
  top: var(--space-3);
  bottom: var(--space-3);
  width: 3px;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
}

.page-solutions .sol-cap--custom::before {
  background: var(--color-accent);
}

.page-solutions .sol-cap-lead {
  display: grid;
  gap: var(--space-1);
  justify-items: start;
  align-content: start;
}

.page-solutions .sol-cap-idx {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.page-solutions .sol-cap-title {
  margin: 0;
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-solutions .sol-cap-line {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-accent);
  letter-spacing: 0.04em;
}

.page-solutions .sol-spec {
  margin: 0;
  display: grid;
  gap: 6px;
}

.page-solutions .sol-spec-row {
  display: grid;
  gap: 2px;
  padding-top: 6px;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-solutions .sol-spec-row dt {
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-solutions .sol-spec-row dd {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink);
}

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

.page-solutions .sol-more summary {
  cursor: pointer;
  list-style: none;
  font-size: var(--text-sm);
  color: var(--color-accent);
  letter-spacing: 0.02em;
}

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

.page-solutions .sol-more summary::before {
  content: "＋ ";
  font-family: var(--font-mono);
}

.page-solutions .sol-more[open] summary::before {
  content: "－ ";
}

.page-solutions .sol-more p {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
  border-left: 3px solid var(--color-highlight);
  padding-left: var(--space-2);
}

/* ---------- 包装规格线 ---------- */
.page-solutions .sol-pack-section {
  background: var(--color-surface-alt);
}

.page-solutions .sol-split {
  display: grid;
  gap: var(--space-6);
  align-items: start;
}

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

.page-solutions .sol-scale::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--color-line);
}

.page-solutions .sol-scale > li {
  position: relative;
  padding-bottom: var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-solutions .sol-scale > li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-solutions .sol-scale > li::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-4) + 2px);
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-primary);
}

.page-solutions .sol-scale-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.page-solutions .sol-scale-idx {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

.page-solutions .sol-scale-head h3 {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-ink);
}

.page-solutions .sol-scale p {
  margin: var(--space-1) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-solutions .sol-scale-meta {
  font-size: var(--text-sm) !important;
  color: var(--color-ink-muted) !important;
  letter-spacing: 0.02em;
}

/* ---------- 周期对照 ---------- */
.page-solutions .sol-cycle-section {
  background: var(--color-surface-deep);
}

.page-solutions .sol-cycle-grid {
  display: grid;
  gap: var(--space-6);
  align-items: start;
}

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

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

.page-solutions .sol-cross {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}

.page-solutions .sol-cross > li {
  position: relative;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-solutions .sol-cross > li::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

.page-solutions .sol-cross-num {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: 1;
  color: var(--color-ink);
}

.page-solutions .sol-cross-num span {
  font-size: var(--text-sm);
  font-weight: 500;
  margin-left: 6px;
  color: var(--color-ink-muted);
}

.page-solutions .sol-cross > li p:last-child {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

/* ---------- 定制方案线 ---------- */
.page-solutions .sol-custom-section {
  background: var(--color-surface);
}

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

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

.page-solutions .sol-steps > li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-solutions .sol-steps .num {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.1;
}

.page-solutions .sol-steps h3 {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-ink);
}

.page-solutions .sol-steps p {
  margin: var(--space-1) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-solutions .sol-gate {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.page-solutions .sol-gate-card {
  padding: var(--space-4);
  border-radius: var(--radius-md);
}

.page-solutions .sol-gate-card h3 {
  margin: 0 0 var(--space-2);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-ink);
}

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

.page-solutions .sol-gate-card li {
  position: relative;
  padding-left: var(--space-3);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

.page-solutions .sol-gate-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 2px;
  background: var(--color-primary);
}

.page-solutions .sol-gate-card--accent li::before {
  background: var(--color-accent);
}

/* ---------- 跨端 ---------- */
.page-solutions .sol-cross-section {
  background: var(--color-contrast-surface);
}

.page-solutions .sol-cross-section .chapter-number {
  color: var(--color-contrast-accent);
}

.page-solutions .sol-cross-section .chapter-title {
  color: var(--color-contrast-ink);
}

.page-solutions .sol-night-grid {
  display: grid;
  gap: var(--space-6);
  align-items: start;
}

.page-solutions .sol-night-text .lede {
  margin: var(--space-2) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--sol-ink-on-night);
  max-width: var(--measure);
}

.page-solutions .sol-night-text > p:last-child {
  margin: var(--space-2) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--sol-ink-on-night);
  max-width: var(--measure);
}

.page-solutions .sol-night-panel {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border-color: var(--color-contrast-accent);
}

.page-solutions .sol-night-kicker {
  margin: 0;
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
  color: var(--color-contrast-accent);
}

.page-solutions .sol-night-figure {
  margin: var(--space-2) 0 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-figure);
  font-weight: 700;
  line-height: 0.95;
  color: var(--color-contrast-accent);
  text-shadow: 0 0 28px color-mix(in srgb, var(--color-contrast-accent) 45%, transparent);
}

.page-solutions .sol-night-caption {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--sol-ink-on-night);
}

/* ---------- 行业入口 ---------- */
.page-solutions .sol-industry-section {
  background: var(--color-surface-alt);
}

.page-solutions .sol-entry {
  display: block;
  margin-top: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
}

.page-solutions .sol-entry .chapter-number {
  color: var(--color-accent);
}

.page-solutions .sol-entry .chapter-title {
  margin-top: var(--space-2);
}

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

.page-solutions .sol-scenes {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.page-solutions .sol-scenes li {
  font-size: var(--text-sm);
  padding: 4px var(--space-2);
  border-radius: var(--radius-pill);
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface);
  color: var(--color-ink-muted);
  transition: color 200ms ease, border-color 200ms ease, background-color 200ms ease;
}

.page-solutions .sol-entry:hover .sol-scenes li,
.page-solutions .sol-entry:focus-visible .sol-scenes li {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: var(--color-highlight);
}

.page-solutions .sol-entry-cta {
  display: inline-block;
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: 2px;
}

.page-solutions .sol-entry:hover .sol-entry-cta {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ---------- 图片 ---------- */
.page-solutions .sol-media {
  position: relative;
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface-deep);
  box-shadow: var(--shadow-1);
}

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

.page-solutions .sol-media--pack { aspect-ratio: 1100 / 780; }
.page-solutions .sol-media--flow { aspect-ratio: 1240 / 560; }
.page-solutions .sol-media--cross { aspect-ratio: 1200 / 700; }
.page-solutions .sol-media--cycle { aspect-ratio: 1080 / 620; }
.page-solutions .sol-media--industry { aspect-ratio: 1200 / 640; }

.page-solutions .sol-media .media-caption {
  position: absolute;
  left: var(--space-2);
  bottom: var(--space-2);
  margin: 0;
  padding: 4px var(--space-2);
  border-radius: var(--radius-pill);
  background: var(--color-highlight);
  color: var(--color-ink);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  line-height: 1.6;
}

.page-solutions .sol-media .media-caption--top {
  top: var(--space-2);
  bottom: auto;
}

.page-solutions .sol-cross-section .sol-media {
  margin-top: var(--space-6);
  background: var(--color-contrast-line);
}

.page-solutions .sol-cross-section .sol-media .media-caption {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-accent);
}

/* ---------- 收束 ---------- */
.page-solutions .sol-outro {
  background: var(--color-surface);
}

.page-solutions .sol-outro-inner {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-6) var(--space-4);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-primary);
  background: var(--color-primary-soft);
}

.page-solutions .sol-outro-inner h2 {
  margin: 0;
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

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

.page-solutions .sol-outro-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-1);
}

.page-solutions .sol-outro-note a {
  color: var(--color-accent);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-solutions .sol-gate {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-solutions .sol-hero {
    padding-block: var(--space-8) var(--section-y-lg);
  }

  .page-solutions .sol-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    column-gap: var(--space-6);
    align-items: start;
  }

  .page-solutions .sol-hero-panel {
    margin-top: var(--space-8);
  }

  .page-solutions .sol-cap {
    grid-template-columns: minmax(0, 3.5fr) minmax(0, 8.5fr);
    column-gap: var(--space-4);
    align-items: start;
  }

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

  .page-solutions .sol-spec {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--space-3);
  }

  .page-solutions .sol-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    column-gap: var(--space-6);
  }

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

  .page-solutions .sol-cycle-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    column-gap: var(--space-6);
  }

  .page-solutions .sol-night-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    column-gap: var(--space-6);
  }

  .page-solutions .sol-media--flow {
    position: sticky;
    top: var(--space-6);
  }

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

@media (min-width: 1100px) {
  .page-solutions .sol-spec {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-solutions .sol-metrics {
    gap: var(--space-3);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-solutions .sol-scenes li,
  .page-solutions .sol-entry-cta {
    transition: none;
  }
}
</main>