body {
    padding-top: 60px; /* 为了给导航栏留出空间 */
}
nav{
  background-color:#f47920;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}
.nav-link{
    color:#eeeeee;
}
.active{
    color:#ffffff !important;
    font-weight:bold;
}
nav a:hover {
    font-weight:bold;
    color: #ffffff !important;
}
.navbar-toggler{
  padding:2px 4px;
  font-size: 16px;
}
.to_cooperation{
  background-color: #f47920;
  font-size: 16px;
  border-radius:4px;
  text-decoration:none;
  color: #ffffff;
  padding:10px 0;
  display: inline-block;
  width:50%;
}
/* 底部样式 */
footer {
    background: #f47920;
    color: #eeeeee;
    padding: 60px 5% 30px;
}
footer a{
  text-decoration: none;
  color: #eeeeee;
}
footer a:hover {
    color: #dddddd;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}
.footer-column{
    margin-top:25px;
}
.footer-column h3 {
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.footer-column ul {
    list-style: none;
    padding-left:unset;
}

.footer-column ul li {
    margin-bottom: 10px;
}

.footer-column ul li a {
    color: #eeeeee;
}
.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #cccccc;
    color: #eeeeee;
}

@media (min-width: 576px) {
    .copyright {
        font-size: 14px;
    }
}
@media (max-width: 575px) {
    .copyright {
        font-size: 12px;
    }
}
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='rgba(255, 255, 255, 1)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
}
.navbar-toggler {
    color:#ffffff;
  border-color: rgba(255, 255, 255, 1); /* 白色边框 */
}
@font-face {
    font-family: 'JiangxiZhuokai'; /* 自定义一个字体名称 */
    src: url('JiangxiZhuokai.ttf') format('truetype'); /* 字体文件的路径和格式 */
}
/* 新增样式：导航锚点和二级菜单 */
        .sub-menu {
            position: absolute;
            background: rgba(0,0,0,0.9);
            border-radius: 5px;
            padding: 10px 0;
            min-width: 200px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
            display: none;
            z-index: 1000;
        }
        
        .nav-item.dropdown:hover .sub-menu {
            display: block;
        }
        
        .sub-menu a {
            display: block;
            padding: 8px 20px;
            color: rgba(255,255,255,0.8);
            text-decoration: none;
            transition: all 0.3s;
        }
        
        .sub-menu a:hover {
            background: rgba(255,255,255,0.1);
            color: white;
            padding-left: 25px;
        }
        
        .sub-menu a i {
            margin-right: 10px;
            width: 20px;
            text-align: center;
        }
        
        .sub-menu-divider {
            border-top: 1px solid rgba(255,255,255,0.2);
            margin: 5px 0;
        }
        
        /* 移动端导航菜单样式 */
        .mobile-submenu {
            padding-left: 20px;
            display: none;
        }
        
        .mobile-submenu.show {
            display: block;
        }
        
        .mobile-submenu a {
            display: block;
            padding: 8px 15px;
            color: rgba(255,255,255,0.8);
            text-decoration: none;
        }
        
        .mobile-submenu a:hover {
            color: white;
        }
        
        .mobile-submenu a i {
            margin-right: 10px;
            width: 20px;
            text-align: center;
        }
        
        /* 固定在顶部的快速导航 */
        .quick-nav {
            position: fixed;
            top: 80px;
            right: 20px;
            z-index: 999;
            background: rgba(0,0,0,0.85);
            border-radius: 10px;
            padding: 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
            display: none;
        }
        
        .quick-nav.show {
            display: block;
        }
        
        .quick-nav a {
            display: block;
            padding: 8px 15px;
            color: rgba(255,255,255,0.8);
            text-decoration: none;
            border-radius: 5px;
            margin-bottom: 5px;
            transition: all 0.3s;
            text-align: center;
            font-size: 14px;
        }
        
        .quick-nav a:hover, .quick-nav a.active {
            background: var(--primary);
            color: white;
        }
        
        @media (max-width: 768px) {
            .quick-nav {
                top: 70px;
                right: 10px;
                padding: 10px;
                display:none;
            }
            
            .quick-nav a {
                padding: 6px 12px;
                margin: 3px;
                font-size: 12px;
                flex: 1;
                min-width: 80px;
            }
        }
        /* 移动端下拉菜单样式 */
        @media (max-width: 992px) {
            .navbar-collapse {
                padding: 15px;
                border-radius: 0 0 10px 10px;
            }
            
            .sub-menu {
                position: static;
                background: transparent;
                box-shadow: none;
                display: block !important;
                opacity: 1 !important;
                transform: none !important;
                padding: 0;
                margin: 10px 0 0 20px;
            }
            
            .sub-menu a {
                color: rgba(255, 255, 255, 0.8) !important;
                padding: 8px 0;
            }
            
            .sub-menu a:hover {
                color: white !important;
                background: transparent;
            }
            
            .navbar-toggler {
                border: none;
                color: white;
            }
        }