/* 关于我们页悬浮胶囊导航（参考恒歌科技n_nav样式） */
.about-nav-sticky {
  position: relative;
  z-index: 99;
  width: 100%;
  transform: translateY(-50%);
  padding: 0 1rem;
}

.about-nav-box {
  position: relative;
  z-index: 1;
  border-radius: 2.5rem;
  background: #fff;
  box-shadow: 0 4px 12px rgba(61,61,61,.1);
  margin: 0 auto;
  max-width: 1200px;
}

/* 模糊蓝色光晕（恒歌风格） */
.about-nav-box::after {
  content: "";
  display: block;
  width: 100%;
  height: 200%;
  position: absolute;
  left: 0;
  top: 0;
  z-index: -1;
  opacity: .1;
  background: #4C64B4;
  filter: blur(100px);
  border-radius: 2.5rem;
  pointer-events: none;
}

.about-nav-list {
  display: flex;
  justify-content: space-around;
  align-items: center;
  height: 4.25rem;
  padding: 0 2rem;
  list-style: none;
  margin: 0;
}

.about-nav-list li a {
  font-size: 1.05rem;
  white-space: nowrap;
  color: rgba(61,61,61,0.5);
  position: relative;
  z-index: 1;
  display: flex;
  height: 3.125rem;
  padding: 0 1.5rem;
  align-items: center;
  justify-content: center;
  border-radius: 1.625rem;
  transition: 0.5s;
  text-decoration: none;
}

/* 渐变背景（激活态） */
.about-nav-list li a::before {
  content: "";
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 1.625rem;
  position: absolute;
  opacity: 0;
  visibility: hidden;
  z-index: -1;
  left: 0;
  top: 0;
  transition: 0.5s;
  background: linear-gradient(102deg, #53D7E5 0%, #2659FF 99%);
}

.about-nav-list li a.active {
  color: #fff;
}

.about-nav-list li a.active::before {
  opacity: 1;
  visibility: visible;
}

/* 响应式：小屏幕优化 */
@media (max-width: 1024px) {
  .about-nav-list {
    padding: 0 1rem;
  }

  .about-nav-list li a {
    font-size: 0.95rem;
    padding: 0 1.2rem;
  }
}

@media (max-width: 768px) {
  .about-nav-sticky {
    display: none;
  }
}

/* Tab面板容器 */
.about-tab-container {
  width: 100%;
}

.about-tab-panel {
  display: none;
}

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

/* 联系方式列表样式 */
.contact-info-list {
  display: flex;
  flex-direction: column;
}

.contact-item {
  display: flex;
  align-items: baseline;
  padding: 1.25rem 0;
  border-bottom: 1px solid rgba(61,61,61,.1);
}

.contact-item:last-child {
  border-bottom: none;
}

.contact-label {
  min-width: 80px;
  font-size: 1.1rem;
  color: var(--c-blue);
  font-weight: 500;
  flex-shrink: 0;
}

.contact-value {
  font-size: 1rem;
  color: var(--c-text);
  line-height: 1.6;
}