/* ==========================================================================
   应用案例页面
   ========================================================================== */

.cases-hero {
  background: #081220;
}

.cases-hero__bg {
  background:
    linear-gradient(135deg, rgba(6, 16, 28, 0.92) 0%, rgba(10, 33, 57, 0.75) 46%, rgba(10, 37, 64, 0.52) 100%),
    var(--xf-cases-hero-bg, none);
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
}

.cases-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(42rem, 1.1fr);
  gap: 5rem;
  align-items: center;
  padding-block: 7rem;
}

.cases-hero h1 {
  max-width: 66rem;
  font-size: var(--fs-h1);
  margin-bottom: var(--space-3);
}

.cases-hero p {
  max-width: 64rem;
}

.cases-hero__actions {
  gap: 1.2rem;
  margin-top: 3rem;
}

.cases-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2.6rem;
}

.cases-hero__chips span {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 1rem 1.4rem;
  border-radius: var(--radius-pill);
  color: #e8f2fa;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  font-size: var(--fs-sm);
  font-weight: 800;
  backdrop-filter: blur(10px);
}

.cases-hero__chips svg {
  width: 1.6rem;
  height: 1.6rem;
}

.hero-case {
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: var(--shadow-float);
}

.hero-case img {
  width: 100%;
  height: 26rem;
  object-fit: cover;
}

.hero-case div {
  padding: 2.8rem;
}

.hero-case span {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--color-accent-soft);
  font-size: var(--fs-sm);
  font-weight: 800;
}

.hero-case h2 {
  font-size: var(--fs-h3);
  margin-bottom: 1rem;
}

.hero-case p {
  color: #c2d1df;
  font-size: var(--fs-base);
  line-height: 1.8;
}

.case-toolbar {
  display: grid;
  grid-template-columns: minmax(32rem, 40rem) minmax(0, 1fr);
  gap: 2rem;
  align-items: end;
  margin-bottom: var(--space-4);
}

.case-toolbar .section__head {
  margin: 0;
  text-align: left;
}

.case-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem;
  justify-content: flex-end;
  min-width: 0;
}

.case-filter,
.case-filter-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 4.6rem;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-line);
  background: #fff;
  color: var(--color-text);
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  transition: border-color var(--dur-fast) var(--ease),
    background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease),
    box-shadow var(--dur-fast) var(--ease);
}

.case-filter-toggle {
  color: var(--color-text);
  background: var(--color-bg-soft);
}

@media (hover: hover) {
  .case-filter:hover,
  .case-filter-toggle:hover {
    border-color: rgba(10, 37, 64, 0.24);
    background: #fff;
    box-shadow: var(--shadow-sm);
  }
}

.case-filter[hidden] {
  display: none;
}

.case-filter.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-text-inverse);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.case-tile {
  display: grid;
  grid-template-rows: 19rem 1fr;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-sm);
}

.case-tile.is-hidden {
  display: none;
}

.case-tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-tile div {
  padding: 2rem;
}

.case-tile span {
  display: inline-block;
  margin-bottom: 0.8rem;
  color: var(--color-cta);
  font-size: var(--fs-xs);
  font-weight: 800;
}

.case-tile h3 {
  color: var(--color-ink);
  font-size: var(--fs-lg);
  margin-bottom: 0.8rem;
}

.case-tile p {
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  line-height: 1.75;
}

.case-tile__link {
  display: inline-flex;
  margin-top: 1.4rem;
}

.case-method__inner {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(42rem, 1.15fr);
  gap: 4rem;
  align-items: center;
}

.case-method__copy p {
  margin-top: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--fs-lg);
  line-height: 1.85;
}

.case-method__cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem;
}

.case-method-card {
  padding: 2.2rem;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-sm);
}

.case-method-card span {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--color-cta);
  font-size: var(--fs-sm);
  font-weight: 900;
}

.case-method-card h3 {
  color: var(--color-ink);
  font-size: var(--fs-h4);
  margin-bottom: 0.8rem;
}

.case-method-card p {
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  line-height: 1.8;
}

.case-request {
  background: var(--grad-dark);
}

.case-request__inner {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(42rem, 1.18fr);
  gap: 4rem;
  align-items: start;
}

.request-copy h2 {
  color: var(--color-text-inverse);
  font-size: var(--fs-h2);
  margin-bottom: var(--space-2);
}

.request-copy p {
  color: var(--color-dark-copy-subtle);
  font-size: var(--fs-lg);
  line-height: 1.8;
}

@media (max-width: 1360px) {
  .case-toolbar {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .case-filters {
    justify-content: flex-start;
  }
}

@media (max-width: 1200px) {
  .cases-hero__inner,
  .case-method__inner,
  .case-request__inner {
    grid-template-columns: 1fr;
  }

  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .cases-hero__inner {
    padding-block: 5.6rem;
    transform: translateY(2.4rem);
  }

  .hero-case img {
    height: 20rem;
  }

  .cases-hero__actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .case-grid,
  .case-method__cards {
    grid-template-columns: 1fr;
  }
}