* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}
body {
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #fff;
    overflow-x: hidden;
}
/* 顶部提示条*/
.top-tip {
    text-align: center;
    color: #ff0000;
    font-size: 30px;
    font-weight: bold;
    padding: 16px 12px;
    border-bottom: 8px solid #ccc;
}
/* 移动端顶栏 */
.mobile-header {
    display: none;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 80;
}
.menu-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    cursor: pointer;
    margin-right: 12px;
}
.menu-btn span {
    width: 100%;
    height: 3px;
    background: #333;
    border-radius: 2px;
}
.mobile-header .page-title {
    font-size: 50px; 
    font-weight: bold;
}
/* 移动端——遮罩层 */
.mask {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 90;
    opacity: 0;
    visibility: hidden;
    transition: 0.3s ease;
}
.mask.show {
    opacity: 1;
    visibility: visible;
}
/* 侧边导航 */
.side-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 180px;
    height: 100vh;
    background: #fff;
    border-right: 1px solid #eee;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 20px 0;
    z-index: 100;
    transition: transform 0.3s ease;
}
.side-nav .nav-title {
    font-size: 20px;
    font-weight: bold;
    padding: 0 20px 16px;
}
.side-nav .cate-group {
    margin-bottom: 16px;
}
.side-nav .cate-title{
    color: #ff0000;
    font-weight: bold;
    font-size: 16px;
    padding: 8px 20px;
}
.cate-group #te{
	color:#ff0000;
	text-decoration: none;
}
.side-nav .cate-item {
    display: block;
	padding: 8px 20px 8px 40px;
    color: #000;
    text-decoration: none;
    font-size: 15px;
}
.side-nav .cate-item:hover {
    background: #f5f5f5;
}
/* 主内容区 */
.main-content {
    min-height: 80%;
	border-bottom: 8px solid #ccc;
}
.main-content iframe {
    width: 100%;
    border: none;
    display: block;
    min-height: calc(100vh - 200px);
}
/* 底部导航+版权*/
.footer {
    margin-left: 210px;
	margin
    border-top: 5px solid #ccc;
    padding: 24px 16px;
    text-align: center;
}
.footer-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 16px;
}
.footer-nav a {
    color: #000;
    text-decoration: none;
    font-size: 16px;
}
.footer-nav a:hover {
    color: #ff0000;
}
.copyright {
    font-size: 16px;
}
/* 移动端适配 */
@media (max-width: 768px) {
	.top-tip{
		display: none;
	}
    .mobile-header {
        display: flex;
    }
	.mobile-header .page-title{
		font-size: 18px;
	}
    .side-nav {
        transform: translateX(-100%);
        width: 50%;
    }
    .side-nav.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
        min-height: 80%;
    }
    .main-content iframe {
        min-height: calc(100vh - 160px);
    }
    .footer {
        margin-left: 0;
    }
    .footer-nav {
        gap: 20px;
    }
    .footer-nav a {
        font-size: 13px;
    }
	.copyright{
		font-size: 13px;
	}
}