/* ========================================
   关于我们页样式
   ======================================== */

.about-page {
  background: var(--color-bg);
}

.about-page .header {
  background: var(--color-primary);
  color: var(--color-white);
  border-bottom: 1px solid var(--color-white-25);
}

.about-hero {
  position: relative;
  color: var(--color-white);
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: flex-end;
}

.about-hero-media {
  position: absolute;
  inset: 0;
}

.about-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.about-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(2, 6, 23, .25), rgba(2, 6, 23, .65));
}

.about-hero-content {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  padding: 16px 0 32px 16px;
  width: 100%;
}

.about-hero-content h1 {
  margin: 0;
  max-width: var(--layout-max);
  margin-left: auto;
  margin-right: auto;
  padding: 0 16px;
  font-size: clamp(32px, 4.2vw, 54px);
  line-height: 1.3;
  font-weight: 900;
}

.about-hero-content h1 .subtitle {
  font-size: 0.7em;
  font-weight: 600;
  opacity: .9;
}


.section {
  padding: 56px 0;
}

.intro {
  background: var(--color-light-gray);
  padding: 40px 0 32px;
}

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}

.intro-content {
  padding: 0 16px;
}

.intro-content h2 {
  margin: 0 0 20px;
  font-size: clamp(26px, 3vw, 38px);
}

.intro-media {
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--effect-shadow-lg);
}

.intro-media img {
  width: 100%;
  height: auto;
  display: block;
}

.intro-text {
  margin: 0 0 16px;
  color: var(--color-text);
  line-height: 1.8;
}

.intro-text:last-child {
  margin-bottom: 0;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.product-card {
  background: var(--color-white);
  border-radius: 14px;
  padding: 18px 18px 20px;
  border: 1px solid var(--color-border);
  box-shadow: var(--effect-shadow-lg);
}

.product-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 10px;
  display: block;
  margin-bottom: 12px;
}

.product-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.product-card p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.7;
}

.section-head {
  text-align: center;
  margin-bottom: 28px;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(26px, 3vw, 38px);
}

.section-head p {
  margin: 10px 0 0;
  color: var(--color-muted);
}

.stats {
  background: var(--color-light-gray);
  padding: 32px 0 56px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.stat-card {
  background: var(--color-white);
  border-radius: 14px;
  padding: 20px;
  text-align: center;
  box-shadow: var(--effect-shadow-lg);
  border: 1px solid var(--color-border);
}

.stat-value {
  font-size: 28px;
  font-weight: 900;
  color: var(--color-primary);
}

.stat-label {
  margin-top: 6px;
  color: var(--color-muted);
  font-size: 14px;
}

.story-grid,
.value-grid,
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.story {
  text-align: center;
}

.story .story-grid {
  grid-template-columns: repeat(2, 1fr);
  max-width: 700px;
  margin: 0 auto;
}

.story-card,
.value-card,
.team-card {
  background: var(--color-white);
  border-radius: 14px;
  padding: 22px;
  border: 1px solid var(--color-border);
  box-shadow: var(--effect-shadow-lg);
}

.story-card h3,
.value-card h3,
.team-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.story-card p,
.value-card p,
.team-card p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.7;
}

.timeline {
  background: var(--color-light-gray);
}

.timeline-list {
  display: grid;
  gap: 14px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 16px;
  padding: 18px 20px;
  border-radius: 12px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  box-shadow: var(--effect-shadow-lg);
}

.timeline-year {
  font-weight: 900;
  color: var(--color-primary);
  font-size: 18px;
}

.timeline-content {
  color: var(--color-text);
  line-height: 1.6;
}

.partners {
  padding-bottom: 72px;
}

.partner-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.partner-pill {
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  box-shadow: var(--effect-shadow-lg);
  font-size: 14px;
  color: var(--color-muted);
}

.cta {
  background: var(--color-primary-dark);
  color: var(--color-white);
  padding: 56px 0;
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.cta h2 {
  margin: 0 0 8px;
  font-size: clamp(24px, 3vw, 34px);
}

.cta p {
  margin: 0;
  color: var(--color-white-65);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-white);
  color: var(--color-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--color-white);
  border-color: var(--color-white-40);
}

.btn-light {
  background: var(--color-white);
  color: var(--color-primary-dark);
}

@media (max-width: 1024px) {
  .about-hero {
    min-height: 280px;
  }

  .intro-grid {
    grid-template-columns: 1fr;
  }

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

  .product-grid,
  .story-grid,
  .team-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .about-hero {
    min-height: 240px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }
}