.page-cases {
  --cases-glass: color-mix(in srgb, var(--color-surface) 74%, transparent);
  --cases-glass-cool: color-mix(in srgb, var(--color-primary-soft) 52%, transparent);
  --cases-hairline: color-mix(in srgb, var(--color-primary) 24%, transparent);
  --cases-hairline-strong: color-mix(in srgb, var(--color-primary) 46%, transparent);
  --cases-deep-glass: color-mix(in srgb, var(--color-contrast-surface) 66%, transparent);
  --cases-deep-hairline: color-mix(in srgb, var(--color-contrast-ink) 20%, transparent);
  display: block;
  background: var(--color-surface);
}

/* ---------- 首屏 ---------- */

.page-cases .cases-hero {
  position: relative;
  overflow: hidden;
  background: var(--color-contrast-surface);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.page-cases .cases-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-cases .cases-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-cases .cases-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.page-cases .cases-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--space-6);
  padding-top: calc(var(--section-y) * 0.62);
  padding-bottom: var(--space-6);
}

.page-cases .cases-hero__lead-col {
  min-width: 0;
}

.page-cases .cases-crumbs {
  margin-bottom: var(--space-4);
}

.page-cases .cases-crumbs ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.page-cases .cases-crumbs li + li::before {
  content: "/";
  margin-right: var(--space-1);
}

.page-cases .cases-crumbs li,
.page-cases .cases-crumbs a {
  color: color-mix(in srgb, var(--color-contrast-ink) 74%, transparent);
  text-decoration: none;
}

.page-cases .cases-crumbs a:hover,
.page-cases .cases-crumbs a:focus-visible {
  color: var(--color-contrast-accent);
}

.page-cases .cases-hero__eyebrow {
  color: var(--color-contrast-accent);
}

.page-cases .cases-hero__title {
  margin: var(--space-2) 0 var(--space-3);
  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-contrast-ink);
  text-wrap: balance;
}

.page-cases .cases-hero__lead {
  margin: 0;
  max-width: 54ch;
  font-size: var(--text-lg);
  line-height: 1.62;
  color: color-mix(in srgb, var(--color-contrast-ink) 88%, transparent);
}

/* 成组大数字 */

.page-cases .cases-figures {
  list-style: none;
  margin: 0;
  padding: var(--space-2) var(--space-3);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-1) var(--space-3);
  border-radius: var(--radius-lg);
  border: var(--border-thin) solid var(--cases-deep-hairline);
  background: var(--cases-deep-glass);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-2);
}

.page-cases .cases-figure {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: var(--space-2) 0;
  border-top: var(--border-thin) solid var(--cases-deep-hairline);
}

.page-cases .cases-figure:nth-child(1),
.page-cases .cases-figure:nth-child(2) {
  border-top: 0;
}

.page-cases .cases-figure__value {
  font-size: var(--text-figure);
  line-height: 1;
  font-weight: 700;
  color: var(--color-contrast-accent);
}

.page-cases .cases-figure__label {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-contrast-ink) 70%, transparent);
}

/* 分组索引条 */

.page-cases .cases-hero__indexwrap {
  position: relative;
  z-index: 1;
  padding-bottom: var(--space-6);
}

.page-cases .cases-index__list {
  list-style: none;
  margin: 0;
  padding: var(--space-2);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
  border-radius: var(--radius-lg);
  border: var(--border-thin) solid var(--cases-deep-hairline);
  background: var(--cases-deep-glass);
  backdrop-filter: blur(14px);
}

.page-cases .cases-index__link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  border: var(--border-thin) solid transparent;
  color: var(--color-contrast-ink);
  text-decoration: none;
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  transition: background-color 200ms ease, border-color 200ms ease, color 200ms ease;
}

.page-cases .cases-index__link:hover,
.page-cases .cases-index__link:focus-visible {
  background: color-mix(in srgb, var(--color-contrast-accent) 16%, transparent);
  border-color: color-mix(in srgb, var(--color-contrast-accent) 52%, transparent);
  color: var(--color-contrast-accent);
}

.page-cases .cases-index__no {
  font-size: var(--text-xs);
  color: var(--color-contrast-accent);
}

.page-cases .cases-index__text {
  min-width: 0;
}

/* ---------- 分组区块 ---------- */

.page-cases .cases-group {
  position: relative;
  padding: var(--section-y) 0 0;
}

.page-cases .cases-group--alt::before,
.page-cases .cases-group--review::before {
  content: "";
  position: absolute;
  inset: calc(var(--section-y) * 0.5) 0 auto 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--cases-hairline-strong) 18%,
    var(--cases-hairline-strong) 62%,
    transparent 100%
  );
}

.page-cases .cases-group__head {
  max-width: 60ch;
}

.page-cases .cases-group__title {
  margin: var(--space-2) 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

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

.page-cases .cases-group__grid {
  margin-top: var(--space-6);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  align-items: stretch;
}

/* ---------- 场景模块卡片 ---------- */

.page-cases .case-card {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: var(--border-thin) solid var(--cases-hairline);
  background:
    linear-gradient(
      158deg,
      var(--cases-glass-cool) 0%,
      var(--cases-glass) 62%
    );
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-1);
  transition: border-color 220ms ease, box-shadow 240ms ease, transform 240ms ease;
}

.page-cases .case-card:hover,
.page-cases .case-card:focus-within {
  border-color: var(--cases-hairline-strong);
  box-shadow: var(--shadow-2);
  transform: translateY(-2px);
}

.page-cases .case-card--feature {
  border-color: color-mix(in srgb, var(--color-accent) 40%, transparent);
}

.page-cases .case-card__media {
  margin: 0;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--color-surface-deep);
}

.page-cases .case-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-cases .case-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
}

.page-cases .case-card__meta {
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.page-cases .case-card__no {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.08em;
}

.page-cases .case-card__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  line-height: 1.28;
  letter-spacing: var(--tracking-heading);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-cases .case-card__scene {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

.page-cases .case-card__rows {
  margin-top: auto;
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--cases-hairline);
}

.page-cases .case-card__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-1) var(--space-2);
  margin: 0 0 var(--space-1);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-cases .case-card__row:last-child {
  margin-bottom: 0;
}

.page-cases .case-card__key {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  font-weight: 600;
  color: var(--color-accent);
  padding-top: 3px;
  white-space: nowrap;
}

/* ---------- 收尾出口 ---------- */

.page-cases .cases-outro {
  padding: var(--section-y-lg) 0 var(--section-y);
}

.page-cases .cases-outro__inner {
  display: grid;
  gap: var(--space-6);
  padding: var(--space-6) var(--space-4);
  border-radius: var(--radius-lg);
  border: var(--border-thin) solid var(--cases-hairline-strong);
  background:
    radial-gradient(
      circle at 12% 8%,
      color-mix(in srgb, var(--color-primary) 18%, transparent) 0%,
      transparent 62%
    ),
    radial-gradient(
      circle at 88% 96%,
      color-mix(in srgb, var(--color-accent) 16%, transparent) 0%,
      transparent 58%
    ),
    var(--color-surface);
}

.page-cases .cases-outro__title {
  margin: var(--space-2) 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

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

.page-cases .cases-outro__paths {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

.page-cases .cases-path {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-height: 44px;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  border: var(--border-thin) solid var(--cases-hairline);
  background: color-mix(in srgb, var(--color-surface) 84%, transparent);
  text-decoration: none;
  transition: border-color 200ms ease, background-color 200ms ease, transform 220ms ease;
}

.page-cases .cases-path:hover,
.page-cases .cases-path:focus-visible {
  border-color: var(--color-accent);
  background: var(--color-primary-soft);
  transform: translateY(-2px);
}

.page-cases .cases-path__kicker {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.page-cases .cases-path__title {
  font-size: var(--text-base);
  line-height: 1.5;
  color: var(--color-ink);
  font-weight: 500;
}

.page-cases .cases-path__hint {
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-cases .cases-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-cases .cases-group__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-cases .case-card--feature {
    grid-column: span 2;
  }

  .page-cases .cases-outro__paths {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-cases .cases-hero__inner {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 1fr);
    align-items: end;
    gap: var(--space-8);
    padding-top: calc(var(--section-y-lg) * 0.72);
    padding-bottom: var(--space-8);
  }

  .page-cases .cases-figures {
    padding: var(--space-3) var(--space-4);
    gap: var(--space-2) var(--space-4);
  }
}

@media (min-width: 1000px) {
  .page-cases .cases-index__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1060px) {
  .page-cases .cases-group__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-cases .case-card--feature {
    grid-column: span 2;
  }

  .page-cases .cases-outro__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
    align-items: start;
    gap: var(--space-8);
    padding: var(--space-8);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-cases .case-card,
  .page-cases .cases-path,
  .page-cases .cases-index__link {
    transition: none;
  }

  .page-cases .case-card:hover,
  .page-cases .case-card:focus-within,
  .page-cases .cases-path:hover,
  .page-cases .cases-path:focus-visible {
    transform: none;
  }
}