/* vip3mb00321 仿清华大学官网风格 - PC 样式 */
*{margin:0;padding:0;box-sizing:border-box}
html,body{font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;color:#333;background:#fff;line-height:1.7;font-size:14px}
a{color:#333;text-decoration:none;transition:color .2s}
a:hover{color:#660874}
ul,ol,li{list-style:none}
img{max-width:100%;vertical-align:middle;border:0}
.container{width:1200px;margin:0 auto}
.clearfix:after{content:"";display:block;clear:both}

/* 一体化头部容器（深紫横向渐变） */
.thu-wrap{background:linear-gradient(90deg,#2e0640 0%,#3d0a52 28%,#3a1248 55%,#3d3140 78%,#4a4147 100%);position:relative}
.thu-wrap::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent)}

/* 顶栏（仅右侧快捷链接） */
.thu-topbar{font-size:13px;height:42px;line-height:42px;background:transparent;color:rgba(255,255,255,.85)}
.thu-topbar .container{display:flex;justify-content:flex-end;align-items:center}
.thu-topbar .tb-right{display:flex;align-items:center}
.thu-topbar .tb-right a{color:rgba(255,255,255,.85);padding:0 14px;position:relative;letter-spacing:1px}
.thu-topbar .tb-right a:hover{color:#fff}
.thu-topbar .tb-right a:not(:last-child)::after{content:"";position:absolute;right:0;top:50%;transform:translateY(-50%);width:1px;height:11px;background:rgba(255,255,255,.18)}
.thu-topbar .tb-right a.lang{color:#fff;display:inline-flex;align-items:center;gap:4px}
.thu-topbar .tb-right a.lang .globe{font-size:14px}
.thu-topbar .tb-right a.search-ico{padding:0 12px;display:inline-flex;align-items:center;color:#fff}

/* 搜索浮层 */
.thu-search{position:fixed;left:50%;top:80px;transform:translateX(-50%);z-index:99;display:none;background:#fff;border-top:3px solid #660874;padding:18px;width:480px;max-width:92%;box-shadow:0 8px 30px rgba(0,0,0,.18)}
.thu-search.on{display:block}
.thu-search form{display:flex;border:2px solid #660874}
.thu-search input[type=text]{flex:1;border:0;padding:10px 14px;font-size:14px;outline:none}
.thu-search button{border:0;background:#660874;color:#fff;padding:0 24px;cursor:pointer;font-size:14px}
.thu-search button:hover{background:#81219b}

/* 头部：Logo 与主导航同区 */
.thu-header{background:transparent;color:#fff;padding:0;border-bottom:0}
.thu-header .container{display:flex;align-items:center;justify-content:flex-start;height:96px;gap:20px;flex-wrap:nowrap;min-width:0}
.thu-header .logo{display:flex;align-items:center;color:#fff;flex:1;min-width:0;overflow:hidden;text-decoration:none}
.thu-header .logo img{height:54px;margin-right:14px;flex-shrink:0}
.thu-header .brand{min-width:0;overflow:hidden}
.thu-header .brand h1{font-size:26px;font-weight:600;letter-spacing:6px;color:#fff;line-height:1.1;font-family:"STKaiti","KaiTi","楷体","Source Han Serif","SimSun",serif;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.thu-header .brand p{font-size:13px;letter-spacing:3px;color:rgba(255,255,255,.85);margin-top:6px;font-family:"Times New Roman",serif;text-transform:none;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* 主导航独立行 */
.thu-navbar{background:rgba(0,0,0,.2);border-top:1px solid rgba(255,255,255,.08)}
.thu-navbar .container{min-width:0}
.thu-navbar .thu-nav{flex:1;min-width:0}
.thu-navbar .thu-nav ul{display:flex;align-items:center;justify-content:center;flex-wrap:nowrap;white-space:nowrap;list-style:none;min-width:0;overflow:hidden;margin:0;padding:0}
.thu-navbar .thu-nav li{flex:0 0 auto;flex-shrink:1;min-width:0;text-align:center;position:relative}
.thu-navbar .thu-nav li a{display:block;padding:0 20px;line-height:50px;font-size:16px;color:#fff;font-weight:500;letter-spacing:1.5px;font-family:"Microsoft YaHei",sans-serif;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:160px}
.thu-navbar .thu-nav li:hover>a,.thu-navbar .thu-nav li.active>a{color:#ffd9a0;background:rgba(0,0,0,.18)}
.thu-navbar .thu-nav li::after{content:"";position:absolute;left:50%;bottom:6px;width:0;height:2px;background:#dbaa00;transition:all .3s;transform:translateX(-50%)}
.thu-navbar .thu-nav li:hover::after,.thu-navbar .thu-nav li.active::after{width:60%}

/* 兼容外部 .thu-nav（非 header 嵌入场景，理论不再使用） */
.thu-nav{background:transparent}

/* 主导航：旧嵌入式样式（已废弃，新结构走 .thu-navbar） */
.thu-header .thu-nav{display:none}

/* 兼容外部 .thu-nav（非 header 嵌入场景，理论不再使用） */
.thu-nav{background:transparent}

/* 轮播 */
.thu-slide{position:relative;background:#f3eaf7}
.thu-slide .swiper-container-index{width:100%;height:460px}
.thu-slide .swiper-slide{position:relative}
.thu-slide .swiper-slide img{width:100%;height:460px;object-fit:cover;display:block}
.thu-slide .swiper-slide .caption{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(180deg,rgba(0,0,0,0),rgba(0,0,0,.7));color:#fff;padding:30px 50px;font-size:20px}
.thu-slide .swiper-pagination{bottom:16px}
.thu-slide .swiper-pagination-bullet{width:28px;height:4px;border-radius:0;background:#fff;opacity:.5}
.thu-slide .swiper-pagination-bullet-active{background:#dbaa00;opacity:1}

/* 区块通用 */
.section{padding:50px 0}
.section.cream{background:#faf6fb}
.section-title{display:flex;align-items:flex-end;justify-content:space-between;border-bottom:2px solid #eadaef;margin-bottom:30px;padding-bottom:10px}
.section-title h2{font-size:24px;color:#660874;font-weight:700;position:relative;padding-left:14px}
.section-title h2:before{content:"";position:absolute;left:0;top:6px;width:4px;height:22px;background:#dbaa00}
.section-title h2 em{font-style:normal;font-size:12px;color:#a67eb3;margin-left:10px;font-family:"Times New Roman",serif;letter-spacing:2px;text-transform:uppercase}
.section-title .more{font-size:13px;color:#888}
.section-title .more:hover{color:#660874}

/* 要闻区 */
.thu-news{display:flex;gap:30px}
.thu-news .headline{flex:1.2;display:block;background:#fff;border:1px solid #eee;transition:all .3s}
.thu-news .headline:hover{border-color:#660874;box-shadow:0 6px 16px rgba(102,8,116,.1);transform:translateY(-2px)}
.thu-news .headline .pic{height:280px;overflow:hidden}
.thu-news .headline .pic img{width:100%;height:100%;object-fit:cover;transition:all .5s}
.thu-news .headline:hover .pic img{transform:scale(1.05)}
.thu-news .headline h3{padding:18px 20px 6px;font-size:18px;color:#222;line-height:1.5}
.thu-news .headline p{padding:0 20px;color:#666;font-size:13px;line-height:1.7}
.thu-news .headline .date{display:block;padding:10px 20px 20px;color:#dbaa00;font-size:13px;font-family:"Times New Roman",serif}
.thu-news .list{flex:1.3;display:flex;flex-direction:column}
.thu-news .list li{display:flex;align-items:center;padding:14px 0;border-bottom:1px dashed #eadaef}
.thu-news .list li:last-child{border-bottom:0}
.thu-news .list .date{width:74px;text-align:center;padding-right:16px;border-right:2px solid #660874;color:#660874;flex-shrink:0}
.thu-news .list .date .d{display:block;font-size:24px;font-weight:700;line-height:1}
.thu-news .list .date .m{display:block;font-size:12px;color:#a67eb3;margin-top:4px;font-family:"Times New Roman",serif}
.thu-news .list h4{flex:1;padding-left:16px;font-size:15px;font-weight:400;color:#333;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.thu-news .list h4 a{color:#333}
.thu-news .list li:hover h4 a{color:#660874}

/* 四栏资讯墙 */
.thu-4col{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.thu-4col .col{background:#fff;border:1px solid #eadaef;border-top:3px solid #660874}
.thu-4col .col-head{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:#faf3ff;border-bottom:1px solid #eadaef}
.thu-4col .col-head h3{font-size:16px;color:#660874}
.thu-4col .col-head a{font-size:12px;color:#888}
.thu-4col .col-head a:hover{color:#dbaa00}
.thu-4col ul{padding:14px 16px}
.thu-4col li{position:relative;padding:7px 0 7px 14px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;font-size:13px}
.thu-4col li:before{content:"";position:absolute;left:0;top:16px;width:4px;height:4px;background:#dbaa00;border-radius:50%}

/* 专题墙 */
.thu-topics{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.thu-topics .card{position:relative;display:block;height:220px;overflow:hidden}
.thu-topics .card img{width:100%;height:100%;object-fit:cover;transition:all .5s}
.thu-topics .card:hover img{transform:scale(1.08)}
.thu-topics .card .mask{position:absolute;left:0;right:0;bottom:0;padding:20px;color:#fff;background:linear-gradient(180deg,rgba(0,0,0,0),rgba(76,8,94,.85))}
.thu-topics .card .mask h3{font-size:17px;font-weight:500}
.thu-topics .card .mask p{font-size:12px;color:#dbaa00;margin-top:4px;font-family:"Times New Roman",serif}

/* 快速入口 */
.thu-quick{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.thu-quick a{display:flex;flex-direction:column;align-items:center;justify-content:center;height:110px;background:linear-gradient(135deg,#660874,#81219b);color:#fff;font-size:15px;letter-spacing:1px;transition:all .3s;border-radius:2px}
.thu-quick a:hover{background:linear-gradient(135deg,#dbaa00,#f0c233);color:#fff;transform:translateY(-3px);box-shadow:0 8px 16px rgba(102,8,116,.25)}
.thu-quick a .ico{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid rgba(255,255,255,.4);border-radius:50%;font-size:18px;margin-bottom:8px}

/* 页面横幅 */
.page-banner{background:linear-gradient(135deg,#4b0664,#660874 60%,#81219b);color:#fff;padding:70px 0;text-align:center;position:relative;overflow:hidden}
.page-banner:before{content:"";position:absolute;left:0;right:0;bottom:0;height:4px;background:#dbaa00}
.page-banner .inner h2{font-size:32px;font-weight:700;letter-spacing:4px}
.page-banner .inner .en{font-size:13px;color:#dbaa00;margin-top:8px;letter-spacing:3px;font-family:"Times New Roman",serif}

/* 面包屑 */
.breadcrumb{background:#f7f2f9;border-bottom:1px solid #eadaef;font-size:13px;color:#888}
.breadcrumb .container{line-height:44px}
.breadcrumb a{color:#660874}

/* 主体布局 */
.main-wrap{padding:40px 0}
.main-wrap .container{display:flex;gap:30px}
.main-wrap .content{flex:1;min-width:0}

/* 侧边栏 */
.sidebar{width:300px;flex-shrink:0}
.sidebar .panel{background:#fff;border:1px solid #eadaef;margin-bottom:22px}
.sidebar .panel-head{background:#660874;color:#fff;padding:12px 16px;font-size:15px;font-weight:500}
.sidebar .panel-head em{font-style:normal;font-size:11px;color:#dbaa00;margin-left:8px;letter-spacing:2px;font-family:"Times New Roman",serif}
.sidebar .panel-body{padding:14px 16px}
.sidebar .panel-body li{position:relative;padding:8px 0 8px 14px;border-bottom:1px dashed #f0e4f5;font-size:13px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.sidebar .panel-body li:last-child{border-bottom:0}
.sidebar .panel-body li:before{content:"";position:absolute;left:0;top:16px;width:4px;height:4px;background:#dbaa00;border-radius:50%}

/* 列表 */
.arc-list li{display:flex;align-items:center;padding:20px 0;border-bottom:1px dashed #eadaef}
.arc-list .date{width:74px;text-align:center;padding:10px 0;background:#faf3ff;color:#660874;flex-shrink:0}
.arc-list .date .d{display:block;font-size:26px;font-weight:700;line-height:1}
.arc-list .date .m{display:block;font-size:12px;color:#a67eb3;margin-top:4px;font-family:"Times New Roman",serif}
.arc-list .txt{flex:1;padding-left:22px;min-width:0}
.arc-list .txt h3{font-size:17px;margin-bottom:6px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.arc-list .txt h3 a{color:#222}
.arc-list .txt h3 a:hover{color:#660874}
.arc-list .txt p{color:#888;font-size:13px;line-height:1.7;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}

/* 分页 */
.pagelist{text-align:center;margin:30px 0 10px;font-size:0}
.pagelist li{display:inline-block;margin:0 3px;font-size:14px}
.pagelist li a,.pagelist li span{display:inline-block;padding:6px 14px;border:1px solid #e0d0e8;color:#660874;background:#fff}
.pagelist li.thisclass span,.pagelist li a:hover{background:#660874;color:#fff;border-color:#660874}

/* 内容页 */
.arc-detail{background:#fff;padding:30px 36px;border:1px solid #eadaef}
.arc-detail .title{font-size:28px;color:#222;text-align:center;padding:10px 0 20px;border-bottom:1px dashed #eadaef}
.arc-detail .meta{text-align:center;padding:16px 0;color:#888;font-size:13px;border-bottom:1px solid #f0e4f5}
.arc-detail .meta span{margin:0 10px}
.arc-detail .body{padding:24px 0;font-size:15px;line-height:2;color:#333}
.arc-detail .body p{margin-bottom:14px}
.arc-detail .body img{max-width:100%;height:auto;display:block;margin:14px auto}
.arc-detail .tags{margin-top:24px;padding-top:18px;border-top:1px dashed #eadaef;font-size:13px}
.arc-detail .tags strong{color:#660874;margin-right:8px}
.arc-detail .tags a{display:inline-block;padding:2px 10px;background:#faf3ff;color:#660874;margin:3px 6px 3px 0;border:1px solid #e8d7ef;font-size:12px}
.arc-detail .tags a:hover{background:#660874;color:#fff}
.arc-detail .prev-next{margin-top:22px;padding-top:18px;border-top:1px dashed #eadaef;font-size:13px}
.arc-detail .prev-next div{padding:6px 0}

/* 标签云 */
.tag-cloud{padding:10px 0}
.tag-cloud li{display:inline-block;margin:5px 6px}
.tag-cloud li a{display:inline-block;padding:6px 14px;background:#faf3ff;color:#660874;border:1px solid #e8d7ef;font-size:13px}
.tag-cloud li a:hover{background:#660874;color:#fff;border-color:#660874}

/* 友情链接 */
.flinks{background:#4b0664;padding:20px 0;color:#e6d4ee;font-size:14px}
.flinks .container{line-height:32px}
.flinks .label{display:inline-block;color:#ffd700;font-size:15px;font-weight:700;letter-spacing:1px;margin-right:24px;vertical-align:middle}
.flinks ul{display:inline;padding:0;margin:0;list-style:none}
.flinks ul li{display:inline-block;vertical-align:middle;margin:0;padding:0}
.flinks ul li a{display:inline-block;padding:0 20px;color:#e6d4ee;font-size:14px;line-height:1.2;border-right:1px solid rgba(255,255,255,.25)}
.flinks ul li:last-child a{border-right:0}
.flinks ul li a:hover{color:#fff}

/* 页脚 */
.site-footer{background:#2e0440;color:#c4a5d0;padding:26px 0;text-align:center;font-size:13px}
.site-footer p{margin:4px 0}
.site-footer a{color:#c4a5d0}
.site-footer a:hover{color:#dbaa00}
.site-footer strong{color:#fff}
.site-footer .beian a{color:#a787b4}

/* ============ 响应式自匹配 ============ */
@media (max-width:1200px){
    .container{width:100%;padding:0 15px;box-sizing:border-box}
}
@media (max-width:1100px){
    .thu-navbar{overflow-x:auto;-webkit-overflow-scrolling:touch}
    .thu-navbar::-webkit-scrollbar{display:none}
    .thu-navbar .thu-nav ul{justify-content:flex-start;overflow:visible}
    .thu-navbar .thu-nav li a{padding:0 14px;font-size:14px;max-width:none}
    .thu-topbar .container{overflow-x:auto;-webkit-overflow-scrolling:touch}
    .thu-header .container{height:auto;padding:14px 15px}
    .thu-header .brand h1{font-size:22px;letter-spacing:3px}
}
@media (max-width:768px){
    body{font-size:14px}
    .thu-topbar,.thu-search{display:none!important}
    .thu-header{padding:14px 0;border-bottom-width:2px}
    .thu-header .container{flex-direction:column;align-items:flex-start;gap:8px;height:auto}
    .thu-header .logo{display:flex;align-items:center;gap:10px}
    .thu-header .logo img{height:42px}
    .thu-header .logo .brand h1{font-size:18px;letter-spacing:2px}
    .thu-header .logo .brand .en{font-size:11px;letter-spacing:1px}
    .thu-header .motto{display:none}
    .thu-navbar .thu-nav li a{padding:0 12px;font-size:13px;line-height:42px}
    .thu-slide,.swiper-container,.swiper-slide{height:220px!important}
    .thu-slide img,.swiper-slide img{height:220px!important;object-fit:cover}
    .thu-news{flex-direction:column}
    .thu-news .left,.thu-news .right{width:100%!important}
    .thu-4col,.thu-3col,.thu-2col{grid-template-columns:1fr!important;display:block}
    .thu-4col .col,.thu-3col .col{margin-bottom:16px}
    .thu-topics{flex-wrap:wrap}
    .thu-topics .card{width:calc(50% - 6px);margin-bottom:10px}
    .thu-quick{flex-wrap:wrap}
    .thu-quick a{width:33.33%;box-sizing:border-box;padding:14px 4px;font-size:12px}
    .page-banner{height:140px!important}
    .page-banner .inner h2,.page-banner h2{font-size:22px}
    .breadcrumb,.crumb{padding:8px 15px;font-size:12px}
    .main-wrap .container,.main-wrap{flex-direction:column;padding:16px 15px}
    .content,.arc-detail,.arc-list{width:100%!important}
    .arc-detail .title,.arc-detail h1.title{font-size:20px;line-height:1.4}
    .arc-detail .meta span{display:inline-block;margin-right:8px;font-size:12px}
    .right-bar,.sidebar{width:100%!important;margin:16px 0 0!important}
    .flinks ul{flex-wrap:wrap}
    .site-footer{padding:20px 0}
    .site-footer p{margin:4px 0}
    img{max-width:100%;height:auto}
    table{max-width:100%}
}

/* ============ THU 特色板块（仿 tsinghua.edu.cn） ============ */
/* 板块标题宋体覆盖（仅特色板块） */
.thu-people .section-title h2,.thu-twocol .section-title h2,.thu-pic-video .section-title h2,.thu-colleges .section-title h2{font-family:"Source Han Serif SC","Noto Serif SC",STSong,SimSun,serif;letter-spacing:2px}

/* 1. 清华人物 */
.thu-people{display:grid;grid-template-columns:1.4fr 1fr;gap:30px}
.thu-people .star{position:relative;display:block;height:380px;overflow:hidden;background:#2e0440}
.thu-people .star img{width:100%;height:100%;object-fit:cover;opacity:.85;transition:all .5s}
.thu-people .star:hover img{opacity:1;transform:scale(1.04)}
.thu-people .star .info{position:absolute;left:0;right:0;bottom:0;padding:24px 28px;color:#fff;background:linear-gradient(180deg,rgba(46,4,64,0),rgba(46,4,64,.92))}
.thu-people .star .info .name{font-size:24px;font-weight:700;letter-spacing:3px;font-family:"Source Han Serif SC",STSong,SimSun,serif}
.thu-people .star .info .role{font-size:13px;color:#dbaa00;margin:6px 0 8px;letter-spacing:2px}
.thu-people .star .info .quote{font-size:13px;color:#e7d4ee;line-height:1.7;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.thu-people .list{display:flex;flex-direction:column;gap:14px}
.thu-people .item{flex:1;display:flex;align-items:center;padding:18px 20px;background:#fff;border:1px solid #eadaef;border-left:4px solid #660874;transition:all .3s}
.thu-people .item:hover{border-left-color:#dbaa00;box-shadow:0 6px 16px rgba(102,8,116,.1);transform:translateX(2px)}
.thu-people .item .n{font-size:32px;font-weight:700;color:#dbaa00;font-family:"Times New Roman",serif;margin-right:18px;line-height:1;flex-shrink:0}
.thu-people .item .txt h3{font-size:15px;color:#222;line-height:1.5;margin-bottom:4px}
.thu-people .item .txt p{font-size:12px;color:#888;overflow:hidden;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical}

/* 2. 学术研究 + 媒体清华双栏 */
.thu-twocol{display:grid;grid-template-columns:1.1fr 1fr;gap:30px}
.thu-twocol .col{background:#fff;border:1px solid #eadaef;padding:22px 24px}
.thu-twocol .col .col-title{display:flex;justify-content:space-between;align-items:center;padding-bottom:14px;border-bottom:2px solid #660874;margin-bottom:16px}
.thu-twocol .col .col-title h3{font-size:18px;color:#660874;font-family:"Source Han Serif SC",STSong,serif;letter-spacing:2px}
.thu-twocol .col .col-title em{font-style:normal;font-size:11px;color:#a67eb3;font-family:"Times New Roman",serif;letter-spacing:2px}
.thu-twocol .col .col-title a{font-size:12px;color:#888}
.thu-twocol .col .top{display:flex;gap:14px;padding-bottom:12px;margin-bottom:10px;border-bottom:1px dashed #eadaef}
.thu-twocol .col .top .pic{width:140px;height:90px;flex-shrink:0;overflow:hidden}
.thu-twocol .col .top .pic img{width:100%;height:100%;object-fit:cover}
.thu-twocol .col .top h4{font-size:15px;color:#222;line-height:1.5;margin-bottom:6px}
.thu-twocol .col .top p{font-size:12px;color:#888;line-height:1.7;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.thu-twocol .col ul li{position:relative;padding:8px 70px 8px 16px;font-size:14px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;border-bottom:1px dashed #f4eaf7}
.thu-twocol .col ul li:last-child{border-bottom:0}
.thu-twocol .col ul li:before{content:"";position:absolute;left:0;top:16px;width:5px;height:5px;background:#dbaa00}
.thu-twocol .col ul li .d{position:absolute;right:0;top:8px;font-size:12px;color:#a67eb3;font-family:"Times New Roman",serif}

/* 3. 数字清华 */
.thu-stats{padding:60px 0;background:linear-gradient(135deg,#660874,#4D094F);color:#fff}
.thu-stats .container{position:relative}
.thu-stats .head{text-align:center;margin-bottom:36px}
.thu-stats .head h2{font-size:28px;letter-spacing:6px;font-family:"Source Han Serif SC",STSong,serif}
.thu-stats .head .en{font-size:13px;color:#dbaa00;margin-top:8px;letter-spacing:4px;font-family:"Times New Roman",serif;text-transform:uppercase}
.thu-stats .grid{display:grid;grid-template-columns:repeat(6,1fr);gap:0;border-left:1px solid rgba(255,255,255,.15)}
.thu-stats .stat{padding:18px 10px;text-align:center;border-right:1px solid rgba(255,255,255,.15)}
.thu-stats .stat .n{font-size:42px;font-weight:700;color:#dbaa00;font-family:"Times New Roman",serif;line-height:1.1}
.thu-stats .stat .u{font-size:14px;margin-left:4px;color:#dbaa00}
.thu-stats .stat .label{font-size:13px;color:#e7d4ee;margin-top:6px;letter-spacing:1px}

/* 4. 清华影音 + 校园视野 */
.thu-pic-video{display:grid;grid-template-columns:1.4fr 1fr;gap:24px}
.thu-pic-video .feature{position:relative;display:block;height:340px;overflow:hidden}
.thu-pic-video .feature img{width:100%;height:100%;object-fit:cover;transition:all .5s}
.thu-pic-video .feature:hover img{transform:scale(1.04)}
.thu-pic-video .feature .play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:64px;height:64px;border-radius:50%;background:rgba(102,8,116,.85);color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;border:2px solid #dbaa00}
.thu-pic-video .feature .cap{position:absolute;left:0;right:0;bottom:0;padding:18px 22px;color:#fff;background:linear-gradient(180deg,rgba(0,0,0,0),rgba(46,4,64,.85))}
.thu-pic-video .feature .cap h3{font-size:18px;font-weight:500;letter-spacing:1px}
.thu-pic-video .grid{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:14px}
.thu-pic-video .grid .item{position:relative;display:block;height:163px;overflow:hidden;transition:all .3s}
.thu-pic-video .grid .item img{width:100%;height:100%;object-fit:cover;transition:all .5s}
.thu-pic-video .grid .item:hover{box-shadow:0 4px 12px rgba(102,8,116,.2);outline:2px solid #dbaa00;outline-offset:-2px}
.thu-pic-video .grid .item:hover img{transform:scale(1.06)}
.thu-pic-video .grid .item .cap{position:absolute;left:0;right:0;bottom:0;padding:8px 12px;color:#fff;font-size:13px;background:linear-gradient(180deg,rgba(0,0,0,0),rgba(46,4,64,.8));overflow:hidden;white-space:nowrap;text-overflow:ellipsis}

/* 5. 院系直通 */
.thu-colleges{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.thu-colleges a{display:flex;align-items:center;justify-content:center;height:62px;padding:0 6px;background:#fff;border:1px solid #eadaef;color:#444;font-size:14px;letter-spacing:1px;text-align:center;transition:all .3s;font-family:"Source Han Serif SC",STSong,SimSun,serif;line-height:1.3}
.thu-colleges a:hover{background:#660874;color:#fff;border-color:#660874;transform:translateY(-2px);box-shadow:0 6px 14px rgba(102,8,116,.25)}

/* === 头条三栏（清华源站第一屏） === */
.thu-headlines{padding:36px 0 50px;background:#fff}
.thu-headlines .hl-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.55fr) minmax(0,1fr);gap:24px;align-items:start}
.thu-headlines .hl-col{min-width:0}
.thu-headlines .hl-head{display:flex;align-items:baseline;gap:8px;border-bottom:1px solid #e8d8ee;padding-bottom:10px;margin-bottom:14px}
.thu-headlines .hl-head h3{font-size:18px;color:#2e0640;font-weight:700;letter-spacing:2px}
.thu-headlines .hl-head h3 em{font-style:normal;font-size:11px;color:#a07eb0;margin-left:8px;font-family:"Times New Roman",serif;letter-spacing:2px;font-weight:400}
.thu-headlines .hl-pic{display:block;width:100%;height:200px;overflow:hidden;background:#f3eaf7;margin-bottom:14px}
.thu-headlines .hl-pic img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.thu-headlines .hl-pic:hover img{transform:scale(1.05)}
.thu-headlines .hl-list li{padding:10px 0;border-bottom:1px dashed #eadaef;font-size:14px;line-height:1.5;color:#333}
.thu-headlines .hl-list li:last-child{border-bottom:0}
.thu-headlines .hl-list li a{color:#333;display:block;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;white-space:normal}
.thu-headlines .hl-list li:hover a{color:#660874}

/* 中间大轮播 */
.thu-headlines .center .thu-slide{position:relative;background:#f3eaf7;overflow:hidden}
.thu-headlines .center .swiper-container-index{width:100%;height:380px}
.thu-headlines .center .swiper-slide{position:relative}
.thu-headlines .center .swiper-slide img{width:100%;height:380px;object-fit:cover;display:block}
.thu-headlines .center .swiper-slide .caption{display:none}
.thu-headlines .center .swiper-pagination{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);text-align:center;width:auto}
.thu-headlines .center .swiper-pagination-bullet{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.6);opacity:1;margin:0 4px;transition:.2s}
.thu-headlines .center .swiper-pagination-bullet-active{background:#660874;width:22px;border-radius:4px}

/* 中间头条文字 */
.thu-headlines .hl-headline{padding:24px 8px 8px;text-align:center}
.thu-headlines .hl-headline .tag{display:flex;align-items:center;justify-content:center;gap:14px;color:#660874;margin-bottom:14px}
.thu-headlines .hl-headline .tag .line{flex:0 0 28px;height:1px;background:#660874}
.thu-headlines .hl-headline .tag .t{font-size:14px;letter-spacing:3px;font-weight:600}
.thu-headlines .hl-headline .tag .t em{font-style:normal;font-size:11px;color:#a07eb0;margin-left:6px;font-family:"Times New Roman",serif;font-weight:400}
.thu-headlines .hl-headline h2{font-size:22px;color:#1a1a1a;line-height:1.5;font-weight:600;letter-spacing:1px;margin-bottom:14px;font-family:"Microsoft YaHei",sans-serif}
.thu-headlines .hl-headline h2 a{color:#1a1a1a}
.thu-headlines .hl-headline h2 a:hover{color:#660874}
.thu-headlines .hl-headline p{color:#666;font-size:13px;line-height:1.9;text-align:center;padding:0 8px}

/* === 防溢出兜底 v1 === */
html,body{overflow-x:hidden}
.container{box-sizing:border-box;max-width:1200px;width:auto !important;padding-left:20px;padding-right:20px}
img,iframe,video{max-width:100%;height:auto}
.thu-news,.thu-news>*,.thu-twocol,.thu-twocol>*,.thu-3col,.thu-3col>*,.thu-4col,.thu-4col>*,.thu-quick,.thu-quick>*,.thu-topics,.thu-topics>*,.thu-pic-video,.thu-pic-video>*,.thu-pic-video .grid,.thu-pic-video .grid>*,.thu-stats .grid,.thu-stats .grid>*,.thu-colleges,.thu-colleges>*,.thu-people,.thu-people>*{min-width:0}
.thu-news .col,.thu-twocol .col,.thu-3col .col,.thu-4col .col,.thu-topics .col{overflow:hidden}
.thu-news ul,.thu-twocol ul,.thu-3col ul,.thu-4col ul,.thu-topics ul{min-width:0}
.thu-news li a,.thu-twocol li a,.thu-3col li a,.thu-4col li a,.thu-topics li a{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}
.flinks,.flinks ul,.flinks ul li{min-width:0}
.thu-navbar .thu-nav ul{flex-wrap:nowrap}