@charset "UTF-8";

/* ===== 顶部导航 ===== */
.header {
  background-color: #1A1A2E;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: #FFFFFF;
  white-space: nowrap;
}

.logo a {
  color: #FFFFFF;
  text-decoration: none;
}

.logo span {
  color: #16C79A;
}

/* ===== 导航菜单 ===== */
.nav-menu {
  display: flex;
  list-style: none;
  gap: 0;
}

.nav-menu li {
  position: relative;
}

.nav-menu a {
  display: block;
  padding: 0 18px;
  color: #FFFFFF;
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 70px;
  transition: all 0.3s ease;
  text-decoration: none;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: #16C79A;
  background-color: rgba(22, 199, 154, 0.1);
}

/* ===== 下拉菜单 ===== */
.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: #1A1A2E;
  min-width: 180px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  border-top: 2px solid #16C79A;
}

.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li {
  display: block;
}

.dropdown-menu a {
  padding: 12px 20px;
  line-height: 1.5;
  font-size: 0.9rem;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.dropdown-menu a:hover {
  background-color: rgba(22, 199, 154, 0.15);
  padding-left: 25px;
}

/* ===== 移动端菜单按钮 ===== */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: #FFFFFF;
  transition: all 0.3s ease;
}

/* ===== 面包屑导航 ===== */
.breadcrumb {
  background-color: #0F0F1A;
  padding: 15px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.breadcrumb .container {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb a {
  color: #16C79A;
  font-size: 0.875rem;
}

.breadcrumb .separator {
  color: #666666;
  font-size: 0.875rem;
}

.breadcrumb .current {
  color: #999999;
  font-size: 0.875rem;
}

/* ===== 分页 ===== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border-radius: 6px;
  font-size: 0.875rem;
  color: #333333;
  background-color: #FFFFFF;
  border: 1px solid #D0D0D5;
  text-decoration: none;
  transition: all 0.3s ease;
}

.pagination a:hover {
  background-color: #16C79A;
  color: #FFFFFF;
  border-color: #16C79A;
}

.pagination .current {
  background-color: #16C79A;
  color: #FFFFFF;
  border-color: #16C79A;
}

.pagination .ellipsis {
  border: none;
  background: none;
  color: #666666;
}

/* ===== 返回顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: 40px;
  right: 40px;
  width: 48px;
  height: 48px;
  background-color: #16C79A;
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 999;
  box-shadow: 0 4px 12px rgba(22, 199, 154, 0.4);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: #0FA07A;
  transform: translateY(-3px);
}

/* ===== 响应式导航 ===== */
@media (max-width: 1024px) {
  .nav-menu {
    gap: 0;
  }
  
  .nav-menu a {
    padding: 0 12px;
    font-size: 0.875rem;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background-color: #1A1A2E;
    flex-direction: column;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  }
  
  .nav-menu.active {
    max-height: 500px;
  }
  
  .nav-menu li {
    width: 100%;
  }
  
  .nav-menu a {
    line-height: 50px;
    padding: 0 20px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
  }
  
  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    display: none;
    box-shadow: none;
    border-top: none;
    background-color: rgba(0,0,0,0.2);
    min-width: auto;
  }
  
  .dropdown.active .dropdown-menu {
    display: block;
  }
  
  .dropdown-menu a {
    padding-left: 40px;
  }
  
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }
}