/* 基础样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft YaHei", sans-serif;
        }
        
        body {
            background: linear-gradient(to bottom, #f1f8e9, #e8f5e9);
            color: #2e7d32;
            line-height: 1.6;
        }
        
        a {
            text-decoration: none;
            color: inherit;
        }
        
        ul {
            list-style: none;
        }
        
        .container {
            width: 1200px;
            margin: 0 auto;
        }
        
        /* 顶部导航栏 - 绿色主题 */
        .top-nav {
            background: linear-gradient(to right, #1b5e20, #2e7d32);
            color: white;
            padding: 12px 0;
            box-shadow: 0 4px 12px rgba(46, 125, 50, 0.3);
        }
        
        .top-nav .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .school-name {
            font-size: 22px;
            font-weight: bold;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.2);
        }
        
        .search-box {
            display: flex;
        }
        
        .search-box input {
            padding: 8px 15px;
            border: none;
            border-radius: 25px 0 0 25px;
            width: 250px;
            font-size: 14px;
            outline: none;
            transition: all 0.3s;
        }
        
        .search-box input:focus {
            box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.5);
        }
        
        .search-box button {
            background: #4caf50;
            color: white;
            border: none;
            padding: 8px 20px;
            border-radius: 0 25px 25px 0;
            cursor: pointer;
            transition: all 0.3s;
            font-weight: 500;
        }
        
        .search-box button:hover {
            background: #388e3c;
            transform: translateX(2px);
        }
        





        /* 主导航 - 绿色渐变 */
        .main-nav {
            background: linear-gradient(to right, #2e7d32, #4caf50);
            box-shadow: 0 3px 10px rgba(76, 175, 80, 0.2);
            width:100%;
            height:46px; 
            float:left;
            position:relative; 
            z-index:10000;
            margin-bottom: 10px;
        }

        #menu {  
        width:1200px;
        clear: both ; 
        font-size:16px;
        height:46px;
        margin:0 auto;
 
       }
        .main-nav ul {
            display: flex;
            justify-content: space-around;
        }
        
        .main-nav li {
            /*padding: 16px 0;*/
            /*position: relative;*/
        }
        
        .main-nav a {
            color: white;
            font-weight: bold;
            padding: 0px 33px;
            transition: all 0.3s;
            border-radius: 5px;
             position: relative;
            overflow: hidden;
        }
        
        .main-nav a::before {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 3px;
            background: white;
            transition: all 0.3s;
            transform: translateX(-50%);
        }
        
        .main-nav a:hover {
            background-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        
        .main-nav a:hover::before {
            width: 80%;
        }
        
/*menu部分*/ 
.menu-nav{} 
#menu ul {
  list-style: none;  
}
li.l1-nav {
  float: left;  
  position: relative; 
  left: 0px;
  top: 0px;
  height:46px; 
  line-height:46px;
  text-align:center;  
}

a.l1-nav {
  display: block;
  text-align: center;
  text-decoration: none;
  height: 46px;
  line-height: 46px;
  color:#fff;
  float:left;
  font-size:15px;
  letter-spacing: 2px;
}

li.l1-nav:hover a.l1-nav, a.l1-nav:hover {  
  color: #fff;
  height:46px; 
  line-height:46px; 
  background:#ffffff42;
}

ul.l2-nav {
  visibility: hidden;
  position: absolute;  /* 第二级菜单相对于第一级菜单绝对定位 */
  top: 46px;
  flex-direction: column;
}
@media screen and (max-width: 768px)

li.l2-nav {
  float: left;  
  position: relative; /* 这里把第二级菜单项设成相对定位，以使得它包含的三级菜单相对它自己定位 */
  left: 0px;
  top: 0px;
  width:120px;
}

a.l2-nav {  
  display: block; /* 把a设成块级显示 */
  text-align: center;
  width: 165%;
  font-size:14px;
  height: 40px;
  line-height: 40px;
  color: #fff;
  background:#8BC34A;
  opacity:0.7;
  text-decoration:none;
  font-size:15px;
  letter-spacing: 2px;
}

li.l2-nav:hover a.l2-nav, a.l2-nav:hover {  
  color: #fff;
  background-color:#338537;
}

/* 这是控制菜单显示与隐藏的重点 */
a.l1-nav:hover ul.l2-nav, li.l1-nav:hover ul.l2-nav {
  visibility: visible;
}














        /* 轮播图区域 - 修改为1200px * 359px */
        .banner-slider {
            position: relative;
            width: 1200px;
            height: 400px;
            overflow: hidden;
            margin: 0 auto 0px;
            border-radius: 10px;
            box-shadow: 0 8px 25px rgba(76, 175, 80, 0.15);
        }
        
        .slides-container {
            display: flex;
            width: 500%;
            height: 100%;
            transition: transform 0.6s ease-in-out;
        }
        
        .slide {
            width: 100%;
            height: 100%;
            position: relative;
        }
        
        .slide img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            filter: brightness(0.9);
           /* position: relative;*/
           /* z-index: -1;*/
        }
        
        .slide-content {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            background: linear-gradient(to top, rgba(46, 125, 50, 0.8), transparent);
            color: white;
            padding: 25px;
        }
        
        .slide-title {
            font-size: 28px;
            font-weight: bold;
            margin-bottom: 8px;
            text-shadow: 2px 2px 8px rgba(0,0,0,0.6);
        }
        
        .slide-desc {
            font-size: 16px;
            opacity: 0.95;
            max-width: 600px;
        }
        
        .slider-controls {
            position: absolute;
            bottom: 15px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 8px;
        }
        
        .slider-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: rgba(255,255,255,0.5);
            cursor: pointer;
            transition: all 0.3s;
            border: 2px solid transparent;
        }
        
        .slider-dot.active {
            background: white;
            transform: scale(1.2);
            border-color: rgba(255,255,255,0.8);
        }
        
        .slider-nav {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 100%;
            display: flex;
            justify-content: space-between;
            padding: 0 20px;
        }
        
        .slider-nav-btn {
            width: 45px;
            height: 45px;
            background: rgba(76, 175, 80, 0.7);
            color: white;
            border: none;
            border-radius: 50%;
            font-size: 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s;
            backdrop-filter: blur(5px);
        }
        
        .slider-nav-btn:hover {
            background: rgba(56, 142, 60, 0.9);
            transform: scale(1.1);
        }
        







         /* 主要内容区域 */
        .main-content {
            display: flex;
            margin: 25px 0;
            gap: 20px;
        }
        
        /* 左侧内容 - 旅管动态和学习专栏垂直排列 */
        .left-content {
            flex: 3;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        
        .left-section {
            background: white;
            border-radius: 10px;
            box-shadow: 0 6px 20px rgba(76, 175, 80, 0.1);
            overflow: hidden;
            transition: transform 0.3s;
            flex: 1; /* 新增：确保高度一致 */
        }
        
        .left-section:hover {
            transform: translateY(-5px);
        }
        
        .section-title {
            background: linear-gradient(to right, #2e7d32, #4caf50);
            color: white;
            padding: 15px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .section-title h2 {
            font-size: 18px;
            font-weight: bold;
            letter-spacing: 2px;
        }
        
        .more-link {
            font-size: 14px;
            transition: all 0.3s;
            padding: 5px 10px;
            border-radius: 3px;
        }
        
        .more-link:hover {
            background: rgba(255,255,255,0.2);
            transform: translateX(3px);
        }
        
        .news-list, .study-list {
            padding: 15px 20px;
        }
        
        .news-item, .study-item {
            padding: 12px 0;
            border-bottom: 1px dashed #e0f2e0;
            display: flex;
            transition: all 0.3s;
            border-radius: 5px;
            padding-left: 8px;
        }
        
        .news-item:hover, .study-item:hover {
            background: #f1f8e9;
            transform: translateX(5px);
        }
        
        .news-item:last-child, .study-item:last-child {
            border-bottom: none;
        }
        
        .news-date {
            color: #2e7d32;
            width: 111px;
            font-weight: bold;
            font-size: 14px;
        }
        
        .news-title, .study-title {
            flex: 1;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            font-size: 15px;
            color: #388e3c;
            letter-spacing: 1px;
        }
        
        .study-item {
            display: flex;
            align-items: center;
        }
        
        .study-category {
            color: #2e7d32;
            width: 98px;
            font-weight: bold;
            font-size: 14px;
            background: #e8f5e9;
            padding: 3px 8px;
            border-radius: 3px;
            text-align: center;
            margin-right: 10px;
        }
        
        /* 右侧内容 */
        .right-content {
            flex: 2;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        
        .right-section {
            background: white;
            border-radius: 10px;
            box-shadow: 0 6px 20px rgba(76, 175, 80, 0.1);
            overflow: hidden;
            transition: transform 0.3s;
            flex: 1; /* 新增：确保高度一致 */
        }
        
        .right-section:hover {
            transform: translateY(-5px);
        }
        
        .notice-list, .special-list {
            padding: 15px 20px;
        }
        
        .notice-item, .special-item {
            padding: 10px 0;
            border-bottom: 1px dashed #e0f2e0;
            transition: all 0.3s;
            border-radius: 5px;
            padding-left: 8px;
            color: #388e3c;
            font-size: 15px;
            line-height: 28px;
        }
        
        .notice-item2, .special-item2 {
            transition: all 0.3s;
            border-radius: 5px;
           display: inline-block;
           background-color: #a7cdf2;
           padding: 6px 10px;
           font-size: 16px;
            color: #333;
           border-top: 2px solid #d4e6d4;
           border-bottom: 2px solid #d4e6d4;
           float: left;
           line-height: 47px;
           width: 284px;
           color: white;
           margin-top: 6px;

        }

        .notice-item:hover, .special-item:hover {
            background: #f1f8e9;
            transform: translateX(5px);
        }
        
        .notice-item:last-child, .special-item:last-child {
            border-bottom: none;
        }
        
        /* 活动图片区域 */
        .activity-section {
            background: white;
            border-radius: 10px;
            box-shadow: 0 6px 20px rgba(76, 175, 80, 0.1);
            margin: 25px 0;
            padding: 25px;
            overflow: hidden;
        }
        
        .activity-title {
            text-align: center;
            margin-bottom: 20px;
            color: #2e7d32;
            font-size: 22px;
            font-weight: bold;
            position: relative;
            padding-bottom: 12px;
           letter-spacing: 10px;
        }
        
        .activity-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 180px;
            height: 3px;
            background: linear-gradient(to right, #2e7d32, #4caf50);
            border-radius: 2px;
        }
        
        .activity-images-container {
            position: relative;
            overflow: hidden;
            width: 100%;
            height: 213px;
            border-radius: 8px;
            border: 1px solid;
        }
        
        .activity-images {
            display: flex;
            position: absolute;
            left: 0;
            transition: transform 0.8s ease-in-out;
            animation: scrollHorizontal 25s linear infinite;
        }
        
        .activity-img {
            width: 300px;
            margin-right: 20px;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 6px 15px rgba(76, 175, 80, 0.2);
            flex-shrink: 0;
            border: 3px solid #e8f5e9;
            transition: all 0.4s;
            letter-spacing: 1px;
        }
        
        .activity-img img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            transition: transform 0.3s;
        }
        
        .activity-img:hover {
            border-color: #4caf50;
            transform: translateY(-8px);
            box-shadow: 0 12px 25px rgba(76, 175, 80, 0.3);
        }
        
        .activity-img:hover img {
            transform: scale(1.05);
        }
        
        @keyframes scrollHorizontal {
            0% {
                transform: translateX(0);
            }
            100% {
                transform: translateX(calc(-300px * 5 - 20px * 5));
            }
        }
        
        /* 友情链接和版权信息 */
        .footer {
            background: linear-gradient(135deg, #2e7d32, #388e3c);
            color: white;
            padding: 35px 0 15px;
            margin-top: 30px;
        }
        
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            margin-bottom: 20px;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(255,255,255,0.2);
            justify-content: center;
            gap: 12px;
           letter-spacing: 1px;
        }
        
        .friend-links a {
            padding: 6px 12px;
            background: rgba(255,255,255,0.1);
            border-radius: 15px;
            transition: all 0.3s;
            font-size: 14px;
        }
        
        .friend-links a:hover {
            background: rgba(255,255,255,0.2);
            transform: translateY(-2px);
        }
        
        .copyright {
            text-align: center;
            font-size: 13px;
            line-height: 1.8;
            opacity: 0.9;
            letter-spacing: 1px;
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            .container {
                width: 95%;
            }
        }
        
        @media (max-width: 768px) {
            .banner-slider {
                height: 280px;
            }
            
            .slide-title {
                font-size: 22px;
            }
            
            .slide-desc {
                font-size: 14px;
            }
            
            .main-content {
                flex-direction: column;
            }
            
            .activity-img {
                width: 250px;
            }
            
            @keyframes scrollHorizontal {
                0% {
                    transform: translateX(0);
                }
                100% {
                    transform: translateX(calc(-250px * 5 - 20px * 5));
                }
            }
            
            .main-nav ul {
                flex-wrap: wrap;
            }
            
            .main-nav > ul > li {
                width: 50%;
                text-align: center;
            }
            
            /* 移动端二级菜单样式 */
            .sub-menu {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                background: rgba(46, 125, 50, 0.8);
                display: none;
            }
            
            .main-nav > ul > li:hover .sub-menu {
                display: block;
            }
            
            /* 移动端学习专栏样式 */
            .study-item {
                flex-direction: column;
                align-items: flex-start;
            }
            
            .study-category {
                width: 100%;
                margin-bottom: 5px;
            }
        }
        
        @media (max-width: 480px) {
            .banner-slider {
                height: 200px;
            }
            
            .slide-title {
                font-size: 18px;
            }
            
            .slide-desc {
                display: none;
            }
            
            .slider-nav {
                display: none;
            }
            
            .activity-img {
                width: 200px;
            }
            
            @keyframes scrollHorizontal {
                0% {
                    transform: translateX(0);
                }
                100% {
                    transform: translateX(calc(-200px * 5 - 20px * 5));
                }
            }
            
            .main-nav > ul > li {
                width: 100%;
            }
            
            .top-nav .container {
                flex-direction: column;
                gap: 12px;
            }
            
            .search-box input {
                width: 180px;
            }
        }