*{margin:0;padding:0;box-sizing:border-box;font-family:"Microsoft Yahei",SimSun;}
ul,dl{list-style:none;}
a{text-decoration:none;color:#333;}
a:hover{color:#c00;}
img{display:block;width:100%;border:0;}
.clearfix::after{content:"";display:block;clear:both;visibility:hidden;height:0;}
/* 全局居中容器，全站统一 */
.wrap{width:1240px;margin:0 auto;}
/* 1. 顶部黑色全局导航栏 */
.top-nav{height:50px;background:#000;}
.top-nav .wrap{display:flex;align-items:center;height:50px;gap:36px;}
.top-nav .logo-yellow{width:60px;}
.top-nav a{color:#fff;font-size:16px;}
.top-nav a:hover{color:#fff;}
.top-nav .more{margin-left:auto;}
.top-nav .right-bar{display:flex;gap:24px;align-items:center;}
.top-nav .btn-box{border:1px #999 solid;padding:4px 12px;color:#fff;font-size:14px;}
/* 2. 顶部通栏广告 */
.top-banner{width:100%;height:160px;background:#222;margin:16px 0;}
/* 3. 头部LOGO+订阅+搜索 */
.channel-header{padding:12px 0 20px;display:flex;align-items:center;justify-content:space-between;}
.logo-text{display:flex;align-items:center;gap:12px;font-size:32px;font-weight:bold;}
.logo-text span.blue{color:#0066cc;}
.subscribe-btn{background:#ffcc00;color:#000;padding:6px 14px;border-radius:4px;font-size:14px;font-weight:bold;}
.top-search{width:460px;height:40px;background:#f4f4f4;border-radius:2px;display:flex;align-items:center;padding:0 16px;}
.top-search input{flex:1;border:0;background:transparent;outline:none;font-size:14px;}
/* 4. 二级栏目导航 */
.sub-nav{border-bottom:2px #000 solid;margin-bottom:24px;}
.sub-nav ul{display:flex;gap:40px;line-height:42px;}
.sub-nav li.active{border-bottom:3px #c00 solid;color:#c00;font-weight:bold;}
/* 页面主体：左主内容 + 右侧热点精选 */
.body-main{display:flex;gap:30px;margin-bottom:40px;}
.main-left{width:900px;}
.main-right{width:280px;}
/* 首屏焦点图文模块 */
.focus-block{display:flex;gap:24px;margin-bottom:36px;}
.focus-big{width:620px;}
.focus-big img{height:320px;object-fit:cover;margin-bottom:10px;}
.focus-big h3{font-size:20px;line-height:1.4;margin-bottom:8px;}
.focus-list{flex:1;}
.focus-list li{padding:10px 0;border-bottom:1px #eee;}
.focus-list li:last-child{border:0;}
.focus-list li a{font-size:16px;}
/* 三图小缩略新闻 */
.three-img-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px;margin-bottom:40px;}
.small-img-item img{height:160px;margin-bottom:8px;}
.small-img-item p{font-size:14px;line-height:1.4;}
/* 通用模块标题 */
.mod-title{font-size:24px;font-weight:bold;margin-bottom:18px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px #ddd;padding-bottom:8px;}
.mod-title a{font-size:14px;color:#666;}
/* 热点视频模块 */
.video-block{margin-bottom:40px;}
.video-three{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px;margin-bottom:16px;}
.video-item img{height:200px;margin-bottom:8px;}
.video-item p{font-size:14px;}
/* 双栏并排模块 */
.double-col{display:flex;gap:30px;margin-bottom:40px;}
.double-col .col{flex:1;}
.double-list li{padding:8px 0;font-size:15px;}
/* 单栏图文条目 */
.one-col-item{display:flex;gap:16px;margin-bottom:20px;}
.one-col-item .thumb{width:260px;height:160px;flex-shrink:0;}
.one-col-item .info h4{font-size:18px;margin-bottom:8px;}
.one-col-item .meta{font-size:13px;color:#777;margin-bottom:10px;}
/* 右侧边栏通用卡片 */
.side-card{margin-bottom:30px;}
.side-title{font-size:20px;font-weight:bold;border-bottom:1px #ddd;padding-bottom:8px;margin-bottom:16px;display:flex;justify-content:space-between;}
.side-list li{display:flex;gap:12px;padding:10px 0;border-bottom:1px #f5f5f5;}
.side-list li img{width:100px;height:70px;flex-shrink:0;}
.side-list li p{font-size:14px;line-height:1.4;}
/* 底部友情链接区域 */
.link-area{margin:60px 0 40px;}
.link-area .mod-title{border:0;}
.link-tags{display:flex;flex-wrap:wrap;gap:12px;row-gap:10px;font-size:14px;line-height:26px;}
.link-tags a{color:#666;}
.link-tags a:hover{color:#c00;}
/* 底部版权 */
.footer{text-align:center;padding:30px 0;color:#777;font-size:13px;line-height:26px;border-top:1px #eee;}
/* 返回顶部悬浮 */
.gotop{position:fixed;right:40px;bottom:60px;width:48px;height:48px;background:#c00;color:#fff;text-align:center;line-height:48px;cursor:pointer;z-index:999;}