/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
ul {
    list-style: none;
}
a {
    text-decoration: none;
    color: #333;
}
.clear {
    clear: both;
}
.wrap {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 0px;
}

/* 头部样式 */
#header {
    background: #fff;
    border-bottom: 1px solid #eee;
    padding: 0px 0;
}
.logo {
    text-align: center;
    margin-bottom: 0px;
}
.logo img {
    max-width: 200px;
    height: auto;
}

/* 桌面端导航样式 */
.mainNav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2px;
}
.mainNav > li {
    position: relative;
    padding: 0 5px;
}
.mainNav > li > a {
    display: block;
    padding: 8px 10px;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s;
}
.mainNav > li.cur > a,
.mainNav > li > a:hover {
    color: #1e88e5;
}
/* 桌面端子菜单 */
.mainNav > li > ul {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 160px;
    background: #fff;
    border-radius: 4px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 999;
}
.mainNav > li:hover > ul {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.mainNav > li > ul > li > a {
    display: block;
    padding: 10px 15px;
    font-size: 13px;
    color: #666;
    transition: background 0.3s;
}
.mainNav > li > ul > li > a:hover {
    background: #f5f7fa;
    color: #1e88e5;
}

/* 手机端菜单样式 */
.mobile-menu-btn {
    display: none;
    position: fixed;
    top: 20px;
    right: 20px;
    width: 36px;
    height: 36px;
    background: #1e88e5;
    border-radius: 4px;
    color: #fff;
    font-size: 20px;
    text-align: center;
    line-height: 36px;
    cursor: pointer;
    z-index: 1001;
}
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #fff;
    z-index: 1000;
    padding-top: 70px;
    overflow-y: auto;
}
.mobile-menu.active {
    display: block;
}
.mobile-menu > li {
    border-bottom: 1px solid #f0f0f0;
}
.mobile-menu > li > a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    font-size: 16px;
    color: #333;
    cursor: pointer; /* 提示可点击 */
	text-decoration: none;
}
/* 手机端加号/减号图标 */
.menu-toggle {
    display: inline-block;
    width: 24px;
    height: 24px;
    text-align: center;
    line-height: 24px;
    font-size: 18px;
    transition: transform 0.3s;
}
/* 手机端子菜单 */
.mobile-submenu {
    display: none;
    background: #f9f9f9;
}
.mobile-submenu.active {
    display: block;
}
.mobile-submenu > li > a {
    display: block;
    padding: 12px 30px;
    font-size: 14px;
    color: #666;
    border-bottom: 1px solid #eee;
}
.mobile-submenu > li:last-child > a {
    border-bottom: none;
}
.mobile-submenu > li > a:hover {
    color: #1e88e5;
}

/* 响应式断点 */
@media (max-width: 768px) {
    /* 隐藏桌面端导航 */
    .mainNav {
        display: none;
    }
    /* 显示手机端菜单按钮和菜单 */
    .mobile-menu-btn {
        display: block;
    }
    .logo {
        text-align: left;
        margin-bottom: 0;
    }
}

@media (min-width: 769px) {
    /* 隐藏手机端元素 */
    .mobile-menu-btn,
    .mobile-menu {
        display: none !important;
    }
}


h5 { text-align:center; }
.showbox { text-align:left;line-height:30px;font-size:16px;border-radius:10px;padding:25px;min-height:350px; }
.showbox img { max-width:100%; }