/* 响应式设计 - 移动端优先 */

/* 移动端汉堡菜单按钮 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 3px 0;
    transition: 0.3s;
    transform-origin: center;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* 移动端导航菜单 */
.mobile-nav {
    display: none;
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: #fff;
    z-index: 1000;
    transition: left 0.3s ease;
    overflow-y: auto;
}

.mobile-nav.active {
    left: 0;
}

.mobile-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-nav ul li {
    border-bottom: 1px solid #eee;
}

.mobile-nav ul li a {
    display: block;
    padding: 15px 20px;
    color: #333;
    text-decoration: none;
    font-size: 16px;
}

.mobile-nav ul li a:hover {
    background-color: #f5f5f5;
}

.mobile-nav .submenu {
    display: none;
    background-color: #f9f9f9;
}

.mobile-nav .submenu.active {
    display: block;
}

.mobile-nav .submenu a {
    padding-left: 40px;
    font-size: 14px;
}

.mobile-nav .menu-item-has-children > a::after {
    content: '+';
    float: right;
    font-size: 20px;
    line-height: 1;
}

.mobile-nav .menu-item-has-children.active > a::after {
    content: '-';
}

/* 平板和手机端样式 */
@media screen and (max-width: 1024px) {
    .layout-main {
        min-width: auto;
        width: 100%;
    }
    
    .header .navbar .topbar {
        max-width: 100%;
        padding: 0 20px;
    }
    
    .header .navbar .topbar .logo {
        width: auto;
        flex: 1;
    }
    
    .header .navbar .topbar .menu {
        display: none;
    }
    
    .header .navbar .topbar .btn {
        width: auto;
        display: flex;
        align-items: center;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-nav {
        display: block;
    }
    
    /* Banner响应式 */
    .banner ul li a .text {
        bottom: 50px;
    }
    
    .banner ul li a .text h1 {
        font-size: 28px;
    }
    
    .banner ul li a .text h2 {
        font-size: 18px;
    }
    

}

@media screen and (max-width: 768px) {
    .header {
        height: 60px;
    }
    
    .header .navbar {
        height: 60px;
    }
    
    .header .navbar .topbar {
        height: 60px;
        padding: 0 15px;
    }
    
    .header .navbar .topbar .logo {
        margin-top: 15px;
        height: 30px;
    }
    
    .mobile-nav {
        top: 60px;
        height: calc(100vh - 60px);
    }
    
    .index-box {
        top: 60px;
    }
    
    .banner ul li a .text {
        bottom: 30px;
    }
    
    .banner ul li a .text h1 {
        font-size: 24px;
    }
    
    .banner ul li a .text h2 {
        font-size: 16px;
    }
    
  
}

@media screen and (max-width: 480px) {
    .header .navbar .topbar {
        padding: 0 10px;
    }
    
    .banner ul li a .text h1 {
        font-size: 20px;
    }
    
    .banner ul li a .text h2 {
        font-size: 14px;
    }
    
  
}

/* 确保图片响应式 */
img {
    max-width: 100%;
    height: auto;
}

/* 容器响应式 */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 15px;
}