/* Page 16 - 嘉华发展历程 专属样式 */
.page16-banner {
  background-color: var(--primary-color);
}

.page16-main {
  padding: 60px 0 80px;
}

.intro-section {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 64px;
}

.intro-section .section-title {
  font-size: 30px;
  margin-bottom: 16px;
}

.intro-section .section-title::after {
  width: 56px;
  border-radius: 2px;
}

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

/* 时间轴核心样式 */
.timeline-section {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px 0;
}

.timeline-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  margin-bottom: 48px;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.timeline-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.timeline-dot {
  position: absolute;
  left: 50%;
  top: 24px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary-color);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--primary-color);
  transform: translateX(-50%);
  z-index: 2;
}

.timeline-content.left,
.timeline-content.right {
  width: 45%;
}

.timeline-year {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent-gold);
  line-height: 1;
}

.timeline-year.year-left {
  position: absolute;
  left: calc(50% + 40px);
  top: 22px;
  text-align: left;
}

.timeline-year.year-right {
  position: absolute;
  right: calc(50% + 40px);
  top: 22px;
  text-align: right;
}

.timeline-card {
  background: #fff;
  border-radius: var(--border-radius);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  padding: 24px 28px;
  transition: all 0.3s ease;
}

.timeline-card:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
  transform: translateY(-2px);
}

.timeline-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 10px;
}

.timeline-card p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
  margin: 0;
}

/* 展望区域 */
.timeline-outro {
  max-width: 800px;
  margin: 64px auto 0;
  padding: 32px 40px;
  background: var(--secondary-color);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--primary-color);
}

.timeline-outro p {
  font-size: 16px;
  color: var(--text-color);
  line-height: 1.8;
  margin: 0;
  text-align: center;
}

/* 响应式 - 平板端 */
@media (max-width: 1024px) {
  .page16-main {
    padding: 50px 0 60px;
  }

  .intro-section {
    margin-bottom: 48px;
  }

  .timeline-section {
    max-width: 90%;
  }

  .timeline-content.left,
  .timeline-content.right {
    width: 43%;
  }
}

/* 响应式 - 移动端 */
@media (max-width: 768px) {
  .page16-main {
    padding: 36px 0 50px;
  }

  .intro-section {
    margin-bottom: 40px;
  }

  .intro-section .section-title {
    font-size: 24px;
  }

  .intro-text {
    font-size: 15px;
  }

  /* 移动端时间线改为左侧单侧布局 */
  .timeline-line {
    left: 30px;
    transform: none;
  }

  .timeline-item {
    margin-bottom: 32px;
  }

  .timeline-dot {
    left: 30px;
    transform: translateX(-50%);
    top: 16px;
  }

  .timeline-content.left,
  .timeline-content.right {
    width: calc(100% - 70px);
    margin-left: auto;
    margin-right: 0;
  }

  .timeline-year.year-left,
  .timeline-year.year-right {
    position: static;
    text-align: left;
    margin-bottom: 10px;
    font-size: 18px;
  }

  .timeline-card {
    padding: 20px;
  }

  .timeline-card h3 {
    font-size: 16px;
  }

  .timeline-card p {
    font-size: 14px;
  }

  .timeline-outro {
    margin-top: 40px;
    padding: 24px 20px;
  }

  .timeline-outro p {
    font-size: 15px;
  }
}