/* ============================================================
   Puchuan — section-about-content.css
   关于我们：介绍 / 核心信息 / 发展历程时间线 / 价值观
   ============================================================ */

.about-content-section .about-section {
  margin: 0 auto;
  max-width: 72rem;
  padding: 3rem 1.5rem;
}

/* 公司介绍区 */
.about-intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.about-intro-card {
  padding: 2rem;
}

.about-intro-para {
  margin-top: 0.75rem;
  font-size: 0.9375rem;
  line-height: 1.9;
  color: var(--color-text-secondary);
}

/* 使命 / 愿景卡片 */
.mission-vision-grid {
  display: grid;
  gap: 1.5rem;
  align-content: start;
}

.mission-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  box-shadow: var(--shadow-glow-icon);
}

.mission-icon svg {
  width: 22px;
  height: 22px;
  color: var(--color-on-primary);
}

.mission-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.mission-text {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  line-height: 1.625;
  color: var(--color-text-secondary);
}

/* 区块小标签（eyebrow） */
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--color-primary-tint-8);
  border: 1px solid var(--color-primary-border-soft);
  color: var(--color-primary-600);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.section-eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--gradient-primary);
}

/* 区块标题 */
.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

/* 核心信息卡 */
.facts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.fact-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 0;
}

.fact-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  flex: none;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  box-shadow: var(--shadow-glow-icon);
}

.fact-icon svg {
  width: 20px;
  height: 20px;
  color: var(--color-on-primary);
}

.fact-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.fact-value {
  margin-top: 4px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.5;
}

/* 垂直时间线 */
.timeline-wrap {
  margin: 0 auto;
  max-width: 48rem;
  padding: 3rem 1.5rem;
}

.timeline-rail {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.timeline-rail::before {
  content: '';
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 24px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(
    180deg,
    rgba(37, 99, 235, 0.6) 0%,
    rgba(14, 165, 233, 0.45) 55%,
    rgba(37, 99, 235, 0.08) 100%
  );
}

.timeline-item {
  position: relative;
  padding-left: 72px;
  padding-bottom: 28px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 30px;
  width: 20px;
  height: 20px;
  border-radius: 999px;
  background: var(--color-surface);
  border: 3px solid var(--color-primary);
  box-shadow: var(--shadow-glow-timeline);
  z-index: 1;
}

.timeline-card {
  margin-bottom: 0;
}

.timeline-year {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  border-radius: 999px;
  background: var(--gradient-primary);
  color: var(--color-on-primary);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow: var(--shadow-glow-logo);
}

.timeline-title {
  margin: 12px 0 8px;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.4;
}

.timeline-desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

/* 价值观卡片 */
.values-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.value-card {
  margin-bottom: 0;
  text-align: center;
}

.value-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  box-shadow: var(--shadow-glow-icon);
}

.value-icon svg {
  width: 26px;
  height: 26px;
  color: var(--color-on-primary);
}

.value-title {
  margin: 0 0 8px;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.value-desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

/* 响应式 */
@media (min-width: 768px) {
  .about-intro-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .about-intro-card {
    grid-column: span 3 / span 3;
  }

  .mission-vision-grid {
    grid-column: span 2 / span 2;
  }

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

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

  .section-title {
    font-size: 2.25rem;
  }
}

@media (min-width: 1024px) {
  .facts-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .values-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .timeline-item::before {
    box-shadow: none;
  }
}