@import url('color.css');

.head {
    width: 100%;
    clear: both;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 999;
    height: 90px;
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
}

.head_height {
    height: 90px;
}

/* 容器使用Flexbox布局 */
.head-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 15px;
    box-sizing: border-box;
}


/* #region logo栏*/
.headlogo {
    flex: 0 0 300px;
    height: 60px;
    display: flex;
    align-items: center;
}

.headlogo img {
    height: 60px;
}
/*#endregion*/


/* #region 导航主菜单 */
.headnav {
    display: flex;
    flex: 1;
    height: 60px;
    line-height: 60px;
}

.headnav .nav-item {
    margin-right: 10px;
}

.headnav .nav-item:last-child {
    margin-right: 0;
}

.headnav .nav-item .nav-link {
    display: block;
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    font-size: var(--font-size-title);
    color: var(--color-primary);
}

.headnav .nav-item .nav-link:hover {
    color: var(--color-secondary);
}

/* 下划线效果 */
.headnav .nav-item .nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 4px;
    left: 0;
    background: linear-gradient(to right, var(--color-secondary), var(--color-secondary));
    transition: width 0.3s ease;
}

/* 鼠标悬停时显示下划线 */
.headnav .nav-item .nav-link:hover::after {
    width: 100%;
}
.headnav .active .nav-link {
    color: var(--color-secondary);
}

/*#endregion*/


    /* #region 主菜单下面的下拉二级菜单 */
    .headnav .has-dropdown {
      position: relative;
    }

    /* 下拉菜单默认样式 + 平滑动画 */
    .headnav .dropdown-menu {
      position: absolute;
      top: 60px;
      left: 0;
      min-width: 160px;
      background: var(--color-bg-primary);
      border: 1px solid var(--color-border);
      border-radius: 4px;
      box-shadow: 0 4px 12px rgba(0,0,0,0.15);
      z-index: 99999;

      /* 🔥 核心：纯CSS淡入淡出动画（替代JS fade） */
      opacity: 0;
      visibility: hidden;
      transform: translateY(10px);
      transition: all 0.03s ease; /* 平滑速度 */
    }

    /* 鼠标悬浮时显示（纯CSS） */
    .headnav .has-dropdown:hover .dropdown-menu {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    /* 下拉项样式 */
    .headnav .dropdown-item {
      display: block;
      padding: 12px 16px;
      line-height: 1.4;
      text-decoration: none;
      color: var(--color-primary);
      font-size: var(--font-size-normal);
      white-space: nowrap;
      background: var(--color-bg-primary);
      border-bottom: 1px solid var(--color-bg-secondary);
    }
    .headnav .dropdown-item:last-child {
      border-bottom: none;
    }
    .headnav .dropdown-item:hover {
      background: var(--color-bg-secondary);
      color: var(--color-secondary);
    }
    .headnav .dropdown-item i {
        margin-right: 8px;
        font-size: var(--font-size-small);
    }

    /*#endregion*/

 /* #region 搜索框和语言 */
.headver {
    flex: 0 0 200px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

    /* #region 语言下拉菜单样式*/
        
    /* 语言选择器容器 */
    .language-selector {
        position: relative;
        display: inline-block;
    }
        
    /* 当前选中语言样式 */
    .current-language {
        display: flex;
        align-items: center;
        cursor: pointer;
        padding: 8px 12px;
        border: 1px solid var(--color-border);
        border-radius: 4px;
        background-color: var(--color-bg-primary);
        color: var(--color-primary);
        font-size: 14px;
        transition: all 0.2s ease;
    }
        
    .current-language:hover {
        background-color: var(--color-bg-secondary);
        border-color: var(--color-primary-light);
    }
        
    /* 下拉箭头 */
    .current-language::after {
        content: '';
        display: inline-block;
        width: 0;
        height: 0;
        margin-left: 8px;
        border-left: 4px solid transparent;
        border-right: 4px solid transparent;
        border-top: 4px solid var(--color-primary);
        transition: transform 0.3s ease;
    }
        
    /* 下拉菜单 */
    .language-dropdown {
        position: absolute;
        top: 100%;
        right: 0;
        min-width: 140px;
        background-color: var(--color-bg-primary);
        border: 1px solid var(--color-border);
        border-radius: 4px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all 0.3s ease;
        z-index: 1000;
    }
        
    /* 下拉菜单项 */
    .language-option {
        display: block;
        padding: 10px 16px;
        text-decoration: none;
        color: var(--color-primary);
        font-size: 14px;
        transition: background-color 0.2s ease;
        border-bottom: 1px solid var(--color-bg-secondary);
    }
        
    .language-option:last-child {
        border-bottom: none;
    }
        
    .language-option:hover {
        background-color: var(--color-bg-secondary);
        color: var(--color-secondary);
    }
        
    /* 激活状态 - 当前选中语言项 */
    .language-option.active {
        background-color: rgba(15, 52, 96, 0.1);
        color: var(--color-primary);
        font-weight: 500;
    }
        
    /* 下拉菜单交互效果 */
    .language-selector:focus-within .language-dropdown,
    .language-selector:hover .language-dropdown {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
        
    .language-selector:focus-within .current-language,
    .language-selector:hover .current-language {
        background-color: var(--color-bg-secondary);
        border-color: var(--color-primary-light);
    }
        
    .language-selector:focus-within .current-language::after {
        transform: rotate(180deg);
    }
        
    /* 移除默认焦点样式 */
    .language-selector:focus {
        outline: none;
    }

     /*#endregion*/


    /* #region 头部搜索模块 */
    .head-search {
      position: relative;
      display: flex;
      align-items: center;
      height: 60px;
      margin-right: 20px;
    }

    /* 搜索图标 */
    .search-toggle {
      width: 40px;
      height: 40px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--color-primary);
      border-radius: 4px;
      font-size: 16px;
    }
    .search-toggle:hover {
      background-color: var(--color-bg-secondary);
      color: var(--color-secondary);
    }

    /* 搜索框默认隐藏，在图标下方 */
    .search-box {
      position: absolute;
      top: 100%;
      right: 0;
      width: 280px;
      height: 44px;
      margin-top: 5px;
  
      display: flex;
      align-items: center;
      padding: 0 10px;
  
      background: var(--color-bg-primary);
      border: 1px solid var(--color-border);
      border-radius: 4px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  
      opacity: 0;
      visibility: hidden;
      transform: translateY(8px);
      transition: all 0.25s ease;
      z-index: 1001;
    }

    /* 鼠标悬浮时显示 */
    .head-search:hover .search-box {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    /* 搜索输入框 */
    .search-input {
      flex: 1;
      height: 100%;
      border: none;
      outline: none;
      padding: 0 8px;
      font-size: 14px;
      background: transparent;
      color: var(--color-primary);
    }
    .search-input::placeholder {
      color: #999;
    }

    /* 搜索按钮 */
    .search-btn {
      height: 32px;
      padding: 0 12px;
      border: none;
      border-radius: 4px;
      background: var(--color-secondary);
      color: #fff;
      font-size: 14px;
      cursor: pointer;
      white-space: nowrap;
    }
    .search-btn:hover {
      background: #0c3b72;
    }
 
    /* #endregion */


/* 当屏幕宽度大于1500px且小于等于1700px时，宽度为1400px */
@media (min-width: 1501px) and (max-width: 1700px) {
    .headnav .nav-item { padding:0px 10px; }
}

/* 当屏幕宽度大于1700px时，宽度为1600px */
@media (min-width: 1701px) {
    .headnav .nav-item { padding: 0px 20px; }
}







 /* 页脚 */
        .footer {
            padding: 80px 0 40px;
            background: #08223f;
            color: var(--white);            
        }

        .footer-wrap {
            display: grid;
            grid-template-columns: 2.5fr 1.5fr 1.5fr 2fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            font-size: 20px;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background: var(--secondary);
        }

        .footer-col p {
            color: #b0b8c1;
            margin-bottom: 20px;
            line-height: 1.7;
        }

        .footer-col ul li{
            margin-bottom: 15px;
            color: #b0b8c1;
            transition: color 0.3s ease;
        }
          .footer-col ul li a{            
            color: #b0b8c1;
            transition: color 0.3s ease;
        }

        .footer-col ul li:hover {
            color: var(--secondary);
            cursor: pointer;
        }

        .footer-col .qrcode {
            display: flex;
            gap: 20px;
        }

        .footer-col .qrcode-item {
            text-align: center;
        }

        .footer-col .qrcode-item img {
            width: 100px;
            height: 100px;
            border-radius: 4px;
            margin-bottom: 10px;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid #1a3a66;
            color: #b0b8c1;
            font-size: 14px;
        }