/* 关于我们页面 */
.about-page {
  padding-top: var(--header-height, 72px);
  min-height: 100vh;
  background: #f9fafb;
}

/* 顶部横幅 */
.about-banner {
  width: 100%;
  height: 600px;
  background: #0a0a1e;
  background-image: url('../img/c02b4d6eecc65f1e8cc30640b81612e9.webp');
  background-size: cover;
  background-position: center bottom;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-banner__inner {
  position: relative;
  text-align: center;
  color: #fff;
  padding: 0 24px;
  max-width: 700px;
}

.about-banner__title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: 3px;
  color: #fff;
}

.about-banner__text {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 2;
  letter-spacing: 0.5px;
}

.about-layout {
  display: flex;
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 24px;
  gap: 0;
}

/* 左侧Tab导航 */
.about-nav {
  width: 160px;
  flex-shrink: 0;
  padding-right: 24px;
  border-right: 1px solid #f1f5f9;
  position: sticky;
  top: 100px;
  align-self: flex-start;
}

.about-nav__item {
  display: block;
  padding: 16px 24px;
  font-size: 18px;
  color: #4b5563;
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: all 0.2s;
  margin-bottom: 2px;
  border-radius: 0 4px 4px 0;
}

.about-nav__item:hover {
  color: #1d2129;
  background: #f5f7fa;
}

.about-nav__item.is-active {
  color: #096ddd;
  font-weight: 600;
  border-left-color: #096ddd;
  background: #eff6ff;
}

/* 右侧内容区 */
.about-content {
  flex: 1;
  min-width: 0;
  padding-left: 40px;
}

.about-panel {
  display: none;
}

.about-panel.is-active {
  display: block;
}

.about-panel h2 {
  font-size: 20px;
  font-weight: 700;
  color: #1d2129;
  margin: 32px 0 14px;
  padding-bottom: 0;
  border-bottom: none;
}

.about-panel h2:first-child {
  margin-top: 0;
}

.about-panel h3 {
  font-size: 16px;
  font-weight: 600;
  color: #1d2129;
  margin: 24px 0 10px;
}

.about-panel p {
  font-size: 14px;
  color: #666;
  line-height: 2;
  margin-bottom: 8px;
}

.about-panel strong {
  color: #1d2129;
}

/* 响应式 */
@media (max-width: 768px) {
  .about-layout {
    flex-direction: column;
    padding: 20px 16px;
    gap: 20px;
  }

  .about-nav {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid #f1f5f9;
    padding-right: 0;
    padding-bottom: 12px;
    position: static;
    display: flex;
    overflow-x: auto;
    gap: 0;
  }

  .about-nav__item {
    border-left: none;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
    padding: 8px 14px;
    font-size: 13px;
    border-radius: 0;
  }

  .about-nav__item.is-active {
    border-left-color: transparent;
    border-bottom-color: #096ddd;
  }

  .about-content {
    padding-left: 0;
  }
}