/* ==================== 现代专业导航栏设计 ==================== */

/* 导航栏容器 - 纯白背景，微妙阴影 */
.navbar {
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04) !important;
  background: #ffffff !important;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06) !important;
  padding: 0.75rem 0 !important;
  backdrop-filter: blur(10px) !important;
  z-index: 2147483647 !important;
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  width: 100% !important;
  max-width: none !important;
  overflow: visible !important;
  margin: 0 !important;
}

.navbar > .container,
.navbar > .container-fluid {
  overflow: visible !important;
  width: 100% !important;
  max-width: 100% !important;
  padding-left: 15px !important;
  padding-right: 15px !important;
  margin-left: auto !important;
  margin-right: auto !important;
  display: flex !important;
  justify-content: space-between !important;
  align-items: center !important;
  flex-wrap: nowrap !important;
}

.navbar-collapse {
  flex-grow: 0 !important;
  justify-content: flex-end !important;
}

.navbar-nav {
  margin-left: auto !important;
  margin-right: 0 !important;
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
}

.navbar-brand {
  padding-top: 0.5rem !important;
  padding-bottom: 0.5rem !important;
  margin-right: 0 !important;
  margin-left: 50px !important;
  flex-shrink: 0 !important;
  font-weight: 600;
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, system-ui, sans-serif !important;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  padding-left: 0;
  margin-left: 50px;
  color: #003366 !important;
  text-shadow: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (max-width: 991px) {
  .navbar-brand {
    padding-left: 0 !important;
    margin-right: 1rem !important;
  }
  
  .navbar-toggler {
    padding: 0.5rem 0.75rem !important;
    margin-left: auto !important;
    flex-shrink: 0 !important;
  }
  
  .navbar-collapse {
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
  }
}


/* 修改导航链接颜色以适应浅色背景 */



.navbar-dark .navbar-toggler {
  border-color: rgba(0, 51, 102, 0.3) !important;
  padding: 0.5rem 0.75rem;
  font-size: 1.25rem;
  line-height: 1;
  background-color: transparent;
  border: 1px solid rgba(0, 51, 102, 0.3);
  border-radius: 0.25rem;
  transition: all 0.3s ease;
}

@media (max-width: 991px) {
  .navbar-expand-lg > .container,
  .navbar-expand-lg > .container-fluid,
  .navbar-expand-lg > .container-sm,
  .navbar-expand-lg > .container-md,
  .navbar-expand-lg > .container-lg,
  .navbar-expand-lg > .container-xl,
  .navbar-expand-lg > .container-xxl {
    display: block !important;
    padding-left: 0 !important;
    padding-right: 0 !important;
  }
  
  .navbar-expand-lg .navbar-nav {
    flex-direction: column !important;
  }
  
  .navbar-expand-lg .navbar-nav .nav-link {
    padding: 0.75rem 1rem !important;
  }
  
  .navbar-expand-lg .navbar-collapse {
    display: none !important;
    flex-basis: 100% !important;
  }
  
  .navbar-expand-lg .navbar-collapse.show,
  .navbar-expand-lg .navbar-collapse.collapsing {
    display: block !important;
  }
  
  .navbar-expand-lg .navbar-toggler {
    display: block !important;
    margin-left: auto !important;
  }
  
  .navbar-expand-lg .navbar-brand {
    margin-right: 0 !important;
    padding-top: 0.5rem !important;
    padding-bottom: 0.5rem !important;
  }
}

.navbar-dark .navbar-toggler:hover {
  background-color: rgba(0, 51, 102, 0.1);
  border-color: rgba(0, 51, 102, 0.5);
}

.navbar-dark .navbar-toggler:focus {
  box-shadow: 0 0 0 0.25rem rgba(0, 51, 102, 0.25);
}

.navbar-dark .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%280, 51, 102, 1%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}



/* 下拉菜单 - 现代卡片式 */
.dropdown-menu {
  border: none !important;
  border-radius: 10px !important;
  box-shadow: 0 5px 25px rgba(0, 0, 0, 0.15) !important;
  padding: 0.5rem 0 !important;
  margin-top: 0 !important;
  background: #ffffff !important;
  position: absolute;
  z-index: 1000;
  display: block;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
}

/* 实现悬停显示下拉菜单 */
.nav-item.dropdown,
.nav-item.dropdown-hover {
  position: relative;
}

/* 悬停时显示下拉菜单 */
.nav-item.dropdown:hover .dropdown-menu,
.nav-item.dropdown-hover:hover .dropdown-menu {
  display: block;
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* 下拉菜单项 */
.dropdown-item {
  padding: 0.75rem 1.5rem !important;
  color: rgba(0, 51, 102, 0.85) !important;
  font-weight: 700 !important;
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, system-ui, sans-serif !important;
  font-size: 0.95rem;
  letter-spacing: 0.2px;
  transition: all 0.2s ease;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.dropdown-item:hover,
.dropdown-item:focus {
  background: linear-gradient(90deg, rgba(0, 51, 102, 0.08), rgba(0, 51, 102, 0.04)) !important;
  color: #003366 !important;
  font-weight: 700 !important;
  transform: translateX(3px) !important;
}

.dropdown-item:last-child {
  border-bottom: none !important;
}


/* 语言切换图标样式 */
.nav-link.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* 调整下拉菜单位置 */
.dropdown-menu[data-bs-popper] {
  top: 100%;
  left: auto;
  right: 0;
  margin-top: 0;
}

.navbar-logo {
  height: 32px;
  width: auto;
  max-height: 32px;
  margin-right: 30px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar:hover .navbar-logo {
  transform: scale(1.03);
}

.brand-slogan {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-left: 15px;
  border-left: 2px solid rgba(0, 51, 102, 0.25);
  margin-left: 5px;
}

.slogan-line {
  font-size: 0.65rem;
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, system-ui, sans-serif !important;
  font-weight: 600;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  line-height: 1.2;
  color: rgba(0, 51, 102, 0.85);
  text-shadow: none;
}

.slogan-line:first-child {
  color: rgba(0, 51, 102, 0.9);
  margin-bottom: 4px;
}

@media (max-width: 991px) {
  .brand-slogan {
    display: flex !important;
    flex-direction: column;
    justify-content: center;
    padding-left: 10px;
    border-left: 2px solid rgba(0, 51, 102, 0.3);
    margin-left: 5px;
  }
  .slogan-line {
    font-size: 0.55rem;
    letter-spacing: 0.3px;
  }
}

@media (max-width: 576px) {
  .brand-slogan {
    display: none !important;
  }
}

.nav-link {
  font-weight: 700 !important;
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, system-ui, sans-serif !important;
  color: #2c3e50 !important;
  text-shadow: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  padding: 10px 18px !important;
  letter-spacing: -0.8px !important;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  width: 0;
  height: 2.5px;
  background: #2c3e50;
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform: translateX(-50%);
  border-radius: 2px;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 70%;
}

.nav-link:hover {
  color: #2c3e50 !important;
}

.nav-link.active {
  color: #2c3e50 !important;
  font-weight: 700;
}

/* ==================== 隐藏导航菜单 ==================== */
/* 隐藏整个导航栏 */
/* .navbar {
  display: none !important;
} */

/* 为内容区域添加顶部间距，因为没有导航栏了 */
body {
  padding-top: 0 !important;
}

/* 确保页面从顶部开始 */
.quote-main,
section,
main {
  padding-top: 2rem !important;
}