.page-cases {
  --case-num-size: calc(var(--text-4xl) * 1.18);
  --case-gutter: var(--space-4);
}

/* ---------- 首屏：错落两列拼接 ---------- */

.page-cases .cases-hero {
  padding: var(--space-6) 0 var(--space-8);
}

.page-cases .cases-hero__grid {
  display: grid;
  gap: var(--gutter);
}

.page-cases .cases-hero__panel {
  padding: var(--space-6) var(--space-4);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2);
}

.page-cases .cases-hero__eyebrow {
  color: var(--color-contrast-accent);
  letter-spacing: 0.14em;
}

.page-cases .cases-hero__title {
  margin: var(--space-3) 0 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-contrast-ink);
  word-break: break-word;
}

.page-cases .cases-hero__sub {
  margin: var(--space-3) 0 0;
  max-width: 44ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.82;
}

.page-cases .cases-hero__figures {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-6);
  margin: var(--space-6) 0 0;
  padding: var(--space-4) 0 0;
  list-style: none;
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-cases .cases-hero__figure {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.page-cases .cases-hero__figureNum {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-contrast-accent);
}

.page-cases .cases-hero__figureCap {
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-contrast-ink);
  opacity: 0.7;
}

/* 右侧三块不等高玻璃卡 */

.page-cases .cases-hero__stack {
  display: grid;
  gap: var(--space-3);
}

.page-cases .hero-card {
  position: relative;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  isolation: isolate;
  padding: var(--space-3);
  min-height: 132px;
  border: var(--border-thin) solid rgba(255, 255, 255, 0.55);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  text-decoration: none;
  color: var(--color-contrast-ink);
  transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
}

.page-cases .hero-card--a { min-height: 188px; }
.page-cases .hero-card--b { min-height: 140px; }
.page-cases .hero-card--c { min-height: 212px; }

.page-cases .hero-card__img {
  position: absolute;
  inset: 0;
  z-index: -3;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-cases .hero-card__scrim {
  position: absolute;
  inset: 0;
  z-index: -2;
  background: var(--overlay-scrim);
}

.page-cases .hero-card__tint {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(120% 110% at 12% 10%, rgba(40, 109, 215, 0.68) 0%, rgba(15, 20, 28, 0.92) 68%),
    linear-gradient(160deg, rgba(39, 171, 216, 0.28) 0%, rgba(15, 20, 28, 0.9) 100%);
}

.page-cases .hero-card__body {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.page-cases .hero-card__num {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--color-primary-ink);
}

.page-cases .hero-card__text {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-contrast-ink);
}

.page-cases .hero-card:hover,
.page-cases .hero-card:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.85);
  box-shadow: var(--shadow-2);
}

/* ---------- 筛选条 ---------- */

.page-cases .cases-filter {
  border-top: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-alt);
}

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

.page-cases .cases-filter__label {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-ink-muted);
}

.page-cases .cases-filter__row {
  display: flex;
  gap: var(--space-1);
  overflow-x: auto;
  padding-bottom: var(--space-1);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-cases .cases-filter__chip {
  flex: 0 0 auto;
  cursor: pointer;
  white-space: nowrap;
}

.page-cases .cases-filter__chip[aria-pressed="true"] {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

/* ---------- 分组暗色带 ---------- */

.page-cases .cases-band {
  padding: var(--space-4) 0;
}

.page-cases .cases-band__inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-2) var(--space-4);
  align-items: baseline;
}

.page-cases .cases-band__num {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--color-contrast-accent);
}

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

.page-cases .cases-band__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-contrast-ink);
}

.page-cases .cases-band__desc {
  margin: var(--space-2) 0 0;
  max-width: 62ch;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.78;
}

.page-cases .cases-band__range {
  grid-column: 2;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-contrast-accent);
}

/* ---------- 分组正文 ---------- */

.page-cases .cases-group__body {
  padding-top: var(--space-6);
  padding-bottom: var(--space-8);
}

.page-cases .cases-group__figure {
  margin: 0 0 var(--space-6);
}

.page-cases .cases-group__figcap {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-contrast-ink);
}

.page-cases .cases-group__intro {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.page-cases .cases-group__introMedia {
  margin: 0;
}

.page-cases .cases-group__note {
  margin: 0;
}

.page-cases .cases-group__noteTitle {
  margin: 0 0 var(--space-2);
  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-cases .cases-group__note p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 案例面板 ---------- */

.page-cases .cases-cards {
  display: grid;
  gap: var(--space-3);
}

.page-cases .case-card {
  padding: var(--space-3);
  border-radius: var(--radius-lg);
}

.page-cases .case-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-cases .case-card__num {
  font-family: var(--font-mono);
  font-size: var(--case-num-size);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--color-primary);
}

.page-cases .case-card__title {
  margin: 0 0 var(--space-3);
  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-cases .case-card__facts {
  display: grid;
  gap: var(--space-2);
  margin: 0;
}

.page-cases .case-card__fact {
  display: grid;
  grid-template-columns: 3.2em minmax(0, 1fr);
  gap: var(--space-2);
  align-items: baseline;
}

.page-cases .case-card__fact dt {
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.12em;
  color: var(--color-accent);
}

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

/* ---------- 结尾窄栏 ---------- */

.page-cases .cases-outro {
  padding: var(--space-8) 0 var(--space-8);
  border-top: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-alt);
}

.page-cases .cases-outro__inner {
  max-width: 40rem;
  margin: 0 auto;
  display: grid;
  gap: var(--space-3);
  justify-items: start;
}

.page-cases .cases-outro__figure {
  width: min(100%, 20rem);
  margin: 0;
}

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

.page-cases .cases-outro__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

/* ---------- 行内链接 ---------- */

.page-cases .cases-inline-link {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-cases .cases-band .cases-inline-link {
  color: var(--color-contrast-accent);
}

.page-cases .cases-inline-link:hover {
  color: var(--color-accent);
}

.page-cases .cases-inline-link:focus-visible,
.page-cases .cases-filter__chip:focus-visible,
.page-cases .hero-card:focus-visible,
.page-cases .case-card:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 768px) {
  .page-cases .cases-hero__panel {
    padding: var(--space-8) var(--space-6);
  }

  .page-cases .cases-filter__inner {
    flex-direction: row;
    align-items: center;
    gap: var(--space-4);
  }

  .page-cases .cases-band__inner {
    grid-template-columns: auto minmax(0, 1fr) auto;
  }

  .page-cases .cases-band__range {
    grid-column: auto;
    align-self: center;
  }

  .page-cases .cases-band__title {
    font-size: var(--text-4xl);
  }

  .page-cases .cases-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--case-gutter);
    align-items: start;
  }

  .page-cases .cases-cards > :nth-child(even) {
    margin-top: var(--space-6);
  }

  .page-cases .case-card {
    padding: var(--space-4);
  }
}

@media (min-width: 1024px) {
  .page-cases .cases-hero {
    padding-top: var(--space-8);
  }

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

  .page-cases .cases-hero__stack {
    gap: var(--space-4);
  }

  .page-cases .cases-group__intro {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-6);
    align-items: center;
  }

  .page-cases .cases-group__intro--flip {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-cases .cases-group__intro--flip .cases-group__introMedia {
    order: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-cases .hero-card {
    transition: none;
  }

  .page-cases .hero-card:hover,
  .page-cases .hero-card:focus-visible {
    transform: none;
  }
}