footer {
  background: #222;
  color: #fff;
  font-size: 14px;
}

/* 第一行整体布局 */
.footer-top-modern {
  display: flex;
  justify-content: center; /* 三栏居中分布 */
  align-items: stretch; /* 让竖线拉满高度 */
  padding: 40px 30px;
  max-width: 1200px;
  margin: 0 auto;
  gap: 40px;
  box-sizing: border-box;
}

/* 左边导航区域 */
.footer-brand-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0 auto;
  text-align: left;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 10px 40px;
}

.footer-nav a {
  color: #bbb;
  text-decoration: none;
  font-size: 1rem;
  padding: 5px 0;
  transition: color 0.3s ease;
}

.footer-nav a:hover {
  color: #fff;
}

/* 中间竖线 */
.footer-separator {
  width: 1px;
  background-color: white;
}

/* 右边联系信息 */
.footer-contact {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start; /* 左对齐 */
  margin: 0 auto;
  text-align: left;
  padding: 10px 40px;
}

.footer-contact h3 {
  font-size: 1.2rem;
  margin-bottom: 15px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  color: #ccc;
}

.contact-item span {
  word-break: break-word;
}

/* 社交按钮 */
.footer-socials {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 15px;
}

.footer-socials .social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 39px;
  height: 39px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.15);
  transition: all 0.3s ease;
}

.footer-socials .social-link img {
  width: 30px;
  height: 30px;
}

.footer-socials .social-link:hover {
  background-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-3px);
}

/* 第二行版权信息 */
.footer-bottom {
  text-align: center;
  padding: 15px 20px;
  font-size: 0.9rem;
  color: #888;
}

/* 响应式 */
@media (max-width: 768px) {
  /* 隐藏左侧导航和中间竖线 */
  .footer-brand-nav,
  .footer-separator {
    display: none;
  }

  /* 右边 Contact 居中容器但文字靠左 */
  .footer-contact {
    width: 100%;
    max-width: 350px; /* 控制文字宽度，视觉居中 */
    align-items: flex-start; /* 左对齐 */
    text-align: left;
    padding: 0; /* 移除多余 padding */
  }

  /* 确保 span 文字在手机上左对齐 */
  .footer-contact .contact-item span {
    text-align: left;
    display: block;
  }

  /* 社交按钮在手机上居中 */
  .footer-socials {
    justify-content: left;
    width: 100%;
  }
}