/* CSS Document */
@charset "utf-8";
*{
	margin:0;
	padding:0;
	}
body{
	font: normal 100% Helvetica, Arial,sans-serif;
	margin:0 auto;
	background: linear-gradient(to right, #020B30,#A3ABC9,#243373, #0A38F7,#6F83D9);
	font-family:"Microsoft YaHei","微软雅黑";
	}
a {
	color:#000;
	text-decoration:none;
	}
a:hover{
    color:red;
    text-decoration:none;
	}
img{
	border:none;
	}
ul{
	list-style:none;
	}
u{
	color:#000;
	text-decoration:none;
	}
b{
	color:#000;
	text-decoration:none;
	font-weight:none;
	}
/*头部框架 */
.headbox{
	display: flex;
            justify-content: space-between;
            align-items: center;
            height: var(--header-height);
            background: white;
            padding: 0 3%;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 100;
	}
.logo{
	text-align:center;
	height:120px;
	}
.logo p{
	font-size:22px;
	}
.logo p a{
	color:#F5EDEB;
	height:120px;
	line-height:120px;
	}
/*正文框架*/
.t_main{
	display: flex;
    flex-wrap: wrap;
    gap: 20px;
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 20px;
		}
.t_main .main_side{
	flex: 1;
    min-width: 300px;
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);}
.t_main .main_newbox{
	flex: 2;
    min-width: 300px;
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);}
/*正文左侧*/
.main_side ul{
	list-style:none;
	}
.main_side ul li{
	line-height:45px;
	height:45px;
	margin-bottom:5px;
	text-align:center;
	}
.main_side ul li a{
	font-size:100%;
	color:#000;
	text-align:center;
	font-weight:bold;
	height:45px;
	display: inline-block;
	position: relative;
	line-height:45px;
	}
.main_side ul li a:hover{
	color:#FFF;
	text-decoration:none;
	max-width:300px;
	height:45px;
	background:#A0522D;
	text-align:center;
	}

/*正文右侧*/
.main_newbox h1{
	font-size:21px;
	text-align:center;
	line-height:25px;
	margin-top:10px;
	height:50px;
	margin-bottom:10px;
	font-weight:bold;
	}
.main_newbox p{
	line-height:35px;
	margin:10px 30px 20px 30px;
	font-size:17px;
	font:微软雅黑;
	}
.main_newbox p img{
	max-width: 100%;
    height: auto;
	margin:10px;
	}

/* 版权 */
.copyright{
	    display: flex;
        flex-wrap: wrap;
        gap: 20px;
        max-width: 1200px;
        margin: 20px auto;
        padding: 0 20px;
	}
.copyright .copynav{
	width:1200px;
	float:left;
	text-align:center;
	border-radius: 8px;
	background:#FFF;
	}
.copynav p{
	font-size:14px;
	color:#000;
	line-height:30px;
	}
.copynav p a{
	font-size:14px;
	color:#000;
	margin-right:5px;
	}
.copynav p a span{
	color:#000;
	}
.copynav .div{
	float:left;
	}
/* 平板设备适配 */
 @media (max-width: 768px) {
.t_main {
        flex-direction: column;
            }
            
.main_side,
.main_newbox {
        flex: none;
        width: 100%;
            }
        }

/* 手机设备适配 */
@media (max-width: 480px) {
.t_main {
                padding: 0 10px;
            }
            
.main_side,
.main_newbox {
                padding: 15px;
            }
            
            h1 {
                font-size: 1.5rem;
            }
    /* 设备适配尺寸调整 */
        @media screen and (max-width: 1200px) {
            .main-content {
                max-width: 1000px;
            }
        }

        @media screen and (max-width: 992px) {
            /* 平板样式调整 */
            :root {
                --header-height: 60px;
            }
            
            .nav-menu li {
                margin-left: 18px;
            }
            
            .ad-banner {
                max-width: 180px;
            }
        }

        @media screen and (max-width: 768px) {
            /* 移动设备样式 */
            .nav-menu {
                display: none;
            }

            .hamburger-menu {
                display: flex;
            }

            .logo-text {
                font-size: 1.2rem;
            }
            
            .logo-ad {
                border-right: none;
                padding-right: 10px;
            }
            
            .header-content {
                justify-content: flex-end;
                padding-left: 10px;
            }
            
            .ad-banner {
                display: none;
            }
        }