/* ============================================================
   仿华中科技大学官网 移动端样式（HUST · new2024）
   ============================================================ */

:root{
    --c-main:#b81c25;
    --c-accent:#8e1219;
    --c-deep:#5a0e14;
    --c-gold:#c9a35f;
    --c-text:#222;
    --c-muted:#888;
    --c-line:#e5e5e5;
    --c-cream:#f5f3ef;
    --c-blue:#1d3a6e;
    --c-blue-deep:#162d56;
}

*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0;overflow-x:hidden;width:100%;max-width:100vw}
body{font:14px/1.7 "Microsoft YaHei","PingFang SC",sans-serif;color:var(--c-text);background:#fff;word-break:break-all}
img{max-width:100%;height:auto;border:0;vertical-align:middle}
a{color:inherit;text-decoration:none}
ul,ol,li{list-style:none;margin:0;padding:0}
h1,h2,h3,h4,h5{margin:0;font-weight:normal}
em,i{font-style:normal}

/* ===== header_m ：三横菜单 + 抽屉导航 ===== */
.m-header{display:flex;align-items:center;gap:10px;padding:10px 14px;background:#fff;border-bottom:1px solid #f0e8e8;position:sticky;top:0;z-index:100;min-height:56px}
.m-header .logo{flex:1;display:flex;align-items:center;gap:10px;min-width:0;color:var(--c-main)}
.m-header .logo img{width:36px;height:36px;flex-shrink:0}
.m-header .logo span{color:var(--c-main);font:bold 16px/1.3 "STSong","Microsoft YaHei",serif;letter-spacing:1px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.menu-btn{width:36px;height:36px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:4px;background:var(--c-main);border-radius:4px;cursor:pointer;flex-shrink:0;transition:background .25s}
.menu-btn span{width:18px;height:2px;background:#fff;border-radius:2px;transition:transform .3s,opacity .3s}
.m-header.open .menu-btn span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.m-header.open .menu-btn span:nth-child(2){opacity:0}
.m-header.open .menu-btn span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.m-nav{position:fixed;top:56px;left:0;right:0;background:#fff;max-height:0;overflow:hidden;transition:max-height .3s ease;z-index:99;box-shadow:0 6px 16px rgba(0,0,0,.08);border-top:2px solid var(--c-main)}
.m-nav.on{max-height:80vh;overflow:auto;-webkit-overflow-scrolling:touch}
.m-nav ul{display:block;padding:6px 0;margin:0;list-style:none}
.m-nav li{display:block;padding:0 18px;border-bottom:1px solid #f0e8e8;flex:none}
.m-nav li:last-child{border-bottom:none}
.m-nav a{display:block;padding:14px 0;font-size:15px;color:#333;white-space:normal}
.m-nav li.active a{color:var(--c-main);font-weight:bold}

/* ===== 板块通用 ===== */
section{padding:18px 14px}
.m-sec-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--c-line);position:relative}
.m-sec-head.red::before{content:"";position:absolute;left:0;bottom:-1px;width:60px;height:2px;background:var(--c-main)}
.m-sec-head .en{display:block;color:var(--c-main);font:italic 12px/1 "Times New Roman",serif;margin-bottom:3px}
.m-sec-head h3{display:inline-block;color:#222;font-size:18px;font-weight:bold;letter-spacing:1px}
.m-sec-head h3 em{color:#888;font-size:13px;font-weight:normal;margin-left:8px}
.m-sec-head .enter{background:var(--c-main);color:#fff;font-size:12px;padding:4px 12px;border-radius:14px}
.m-sec-head .more{color:var(--c-main);font-size:12px}

/* ===== 1. 学校要闻 ===== */
.m-news{background:#fdfbf7}
.m-slide{position:relative;border-radius:2px;overflow:hidden;background:#000}
.m-slide .swiper-container{height:200px}
.m-slide img,.m-slide .swiper-slide img{width:100%;height:100%;object-fit:cover;display:block}
.m-slide .swiper-pagination{position:absolute;left:50%;bottom:8px;transform:translateX(-50%);text-align:center}
.m-slide .swiper-pagination-bullet{width:6px;height:6px;background:rgba(255,255,255,.6);opacity:1;margin:0 3px}
.m-slide .swiper-pagination-bullet-active{background:var(--c-main);width:14px;border-radius:4px}
.m-news-cap{display:block;background:#fff;padding:12px 14px;border-bottom:2px solid var(--c-main);margin-bottom:8px}
.m-news-cap h4{color:#222;font-size:15px;font-weight:bold;line-height:1.5}
.m-news-cap .date{color:#888;font:italic 12px/1 "Times New Roman",serif;margin-top:6px;display:block}
.m-news-list li{padding:10px 0;border-bottom:1px dashed var(--c-line);display:flex;justify-content:space-between;gap:8px;align-items:center}
.m-news-list li:last-child{border-bottom:0}
.m-news-list li a{flex:1;min-width:0;color:#333;font-size:13.5px;line-height:1.5;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.m-news-list li .date{color:var(--c-muted);font:italic 12px/1 "Times New Roman",serif;flex-shrink:0}

/* ===== 2. 校园看点 + 媒体聚焦（蓝底） ===== */
.m-bluetwocol{background:linear-gradient(135deg,var(--c-blue-deep),var(--c-blue));color:#dbe5f5;padding:20px 14px}
.bt-block{margin-bottom:24px}
.bt-block:last-child{margin-bottom:0}
.bt-head{padding-bottom:10px;margin-bottom:12px;border-left:3px solid var(--c-main);padding-left:10px}
.bt-head .en{display:block;color:var(--c-main);font:italic 12px/1 "Times New Roman",serif;margin-bottom:3px}
.bt-head h3{color:#fff;font-size:17px;font-weight:bold;letter-spacing:2px}
.bt-head h3 em{color:#a5b6d4;font-size:13px;font-weight:normal;margin-left:10px}
.bt-headline{display:flex;background:rgba(255,255,255,.04);border-radius:2px;overflow:hidden;margin-bottom:10px;gap:10px}
.bt-headline .pic{flex-shrink:0;width:130px;height:88px;overflow:hidden}
.bt-headline .pic img{width:100%;height:100%;object-fit:cover}
.bt-headline .txt{flex:1;min-width:0;padding:8px 10px 8px 0;display:flex;flex-direction:column;justify-content:center}
.bt-headline .txt h4{color:#fff;font-size:14px;font-weight:bold;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.bt-headline .txt span{color:#a5b6d4;font:italic 11px/1 "Times New Roman",serif;margin-top:4px}
.bt-list li{padding:8px 0;border-bottom:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;align-items:center;gap:8px}
.bt-list li:last-child{border-bottom:0}
.bt-list a{flex:1;min-width:0;color:#dbe5f5;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bt-list span{color:#88a0c8;font:italic 11px/1 "Times New Roman",serif;flex-shrink:0}

/* ===== 3. 探索 ===== */
.m-explore{background:#f5f3ef}
.exp-feature{display:block;border:4px solid var(--c-main);background:#fff;margin-bottom:12px;overflow:hidden}
.exp-feature .pic{height:180px;overflow:hidden}
.exp-feature .pic img{width:100%;height:100%;object-fit:cover}
.exp-feature .cap{padding:10px 14px;background:#cdc5b8}
.exp-feature .cap h4{color:#333;font-size:13px;font-weight:bold;line-height:1.5}
.exp-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.exp-card{display:flex;align-items:center;background:#fff;padding:14px 12px;min-height:80px;border-bottom:2px solid #d8b4b8}
.exp-card h4{color:#222;font-size:13px;font-weight:bold;line-height:1.5}

/* ===== 4. 求知 ===== */
.m-seek{background:#fff}
.sk-video{display:block;position:relative;background:var(--c-blue);height:200px;overflow:hidden;margin-bottom:12px}
.sk-video img{width:100%;height:100%;object-fit:cover;opacity:.85}
.sk-video .play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:46px;height:46px;background:rgba(255,255,255,.9);color:var(--c-blue);border-radius:50%;text-align:center;line-height:46px;font-size:18px;padding-left:4px;box-sizing:border-box}
.sk-video h4{position:absolute;left:0;right:0;bottom:0;padding:10px 14px;background:linear-gradient(180deg,transparent,rgba(0,0,0,.6));color:#fff;font-size:14px;font-weight:bold}
.sk-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.sk-card{display:flex;align-items:center;background:#fff;padding:12px;min-height:70px;border-bottom:2px solid #c8d6ec}
.sk-card h4{color:#222;font-size:13px;font-weight:bold;line-height:1.5}

/* ===== 5. 交流 ===== */
.m-comm{background:#fff}
.cm-photo{display:block;position:relative;height:200px;overflow:hidden;margin-bottom:12px;background:#222}
.cm-photo img{width:100%;height:100%;object-fit:cover}
.cm-photo h4{position:absolute;left:0;right:0;bottom:0;padding:10px 14px;background:linear-gradient(180deg,transparent,rgba(0,0,0,.7));color:#fff;font-size:14px;font-weight:bold}
.cm-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.cm-card{display:flex;align-items:center;background:#fff;padding:12px;min-height:70px;border-bottom:2px solid #f0c8cc}
.cm-card h4{color:#222;font-size:13px;font-weight:bold;line-height:1.5}

/* ===== 6. 通知公告 ===== */
.m-notice{background:#f5f3ef}
.nt-grid{display:flex;flex-direction:column;gap:10px}
.nt-card{display:flex;align-items:center;gap:14px;background:#fff;padding:16px;border-radius:2px;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.nt-date{flex-shrink:0;background:var(--c-main);color:#fff;width:50px;text-align:center;padding:8px 0;border-radius:2px}
.nt-date b{display:block;font:bold 22px/1 "Times New Roman",serif}
.nt-date em{display:block;font-size:10px;margin-top:3px}
.nt-card h4{flex:1;min-width:0;color:#222;font-size:14px;font-weight:bold;line-height:1.6}

/* ===== 7. 华科大故事 ===== */
.m-stories{background:#fff}
.st-tag{display:flex;align-items:center;justify-content:center;color:#fff;font:bold 22px/1.3 "STSong","Microsoft YaHei",serif;letter-spacing:4px;padding:18px;margin-bottom:10px;border-radius:2px}
.st-tag.people{background:linear-gradient(135deg,var(--c-main),var(--c-deep))}
.st-tag.image{background:linear-gradient(135deg,var(--c-blue),var(--c-blue-deep))}
.st-tag.life{background:linear-gradient(135deg,var(--c-main),var(--c-accent))}
.st-people{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;margin-bottom:14px}
.ph-card{position:relative;display:block;overflow:hidden;background:#222;height:140px}
.ph-card img{width:100%;height:100%;object-fit:cover}
.ph-card .ph-cap{position:absolute;left:0;right:0;bottom:0;padding:6px 10px;background:linear-gradient(180deg,transparent,rgba(0,0,0,.75));color:#fff;font-size:12px;line-height:1.4;display:block;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.st-video{display:block;position:relative;background:var(--c-blue);height:180px;overflow:hidden;margin-bottom:14px}
.st-video img{width:100%;height:100%;object-fit:cover;opacity:.9}
.st-video .play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:42px;height:42px;background:rgba(255,255,255,.9);color:var(--c-blue);border-radius:50%;text-align:center;line-height:42px;font-size:16px;padding-left:3px;box-sizing:border-box}
.st-video h4{position:absolute;left:0;right:0;bottom:0;padding:10px 14px;background:linear-gradient(180deg,transparent,rgba(0,0,0,.7));color:#fff;font-size:13px;font-weight:bold}
.st-life{display:block;position:relative;height:160px;overflow:hidden}
.st-life img{width:100%;height:100%;object-fit:cover}
.st-life .life-cap{position:absolute;left:0;right:0;bottom:0;padding:10px 14px;background:linear-gradient(180deg,transparent,rgba(184,28,37,.8));color:#fff;font-size:13px;font-weight:bold}

/* ===== 8. 社交媒体 ===== */
.m-social{background:linear-gradient(135deg,var(--c-blue-deep),var(--c-blue));color:#dbe5f5;padding:20px 14px}
.m-social .m-sec-head.white{border-bottom-color:rgba(255,255,255,.15)}
.m-social .m-sec-head.white h3{color:#fff}
.m-social .m-sec-head.white h3 em{color:#a5b6d4}
.so-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.so-col{background:rgba(255,255,255,.06);padding:12px;border-radius:2px}
.so-head{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.so-ic{display:inline-block;width:20px;height:20px;border-radius:50%;flex-shrink:0;background:#fff}
.so-ic.wechat{background:#1aad19}
.so-ic.video{background:#000}
.so-ic.study{background:#d33}
.so-ic.weibo{background:#e6162d}
.so-name{flex:1;color:#fff;font-size:12px;font-weight:bold;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.so-head .follow{flex-shrink:0;background:var(--c-main);color:#fff;font-size:11px;padding:3px 8px;border-radius:12px}

/* ===== 9. 专题网站 ===== */
.m-special{background:#f5f3ef}
.sp-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.sp-card{display:block;position:relative;overflow:hidden;background:var(--c-main)}
.sp-card img{width:100%;height:240px;object-fit:cover;display:block}
.sp-card .sp-cap{position:absolute;left:0;right:0;bottom:0;padding:8px 12px;background:linear-gradient(180deg,transparent,rgba(0,0,0,.7));color:#fff;font-size:12px;font-weight:bold}

/* ===== footer_m ===== */
.m-footer{background:#3a2d2a;color:#bdb1a6;padding:24px 14px 16px;text-align:center}
.m-footer p{margin:6px 0;font-size:12px;line-height:1.7}
.m-footer a{color:#bdb1a6}
.m-flinks{background:#7a0d14;color:#f3d8d8;padding:14px}
.m-flinks .label{display:block;color:#f5c97a;font-weight:bold;font-size:13px;margin-bottom:6px}
.m-flinks ul{display:flex!important;flex-wrap:wrap!important;list-style:none!important;padding:0!important;margin:0!important;gap:0!important}
.m-flinks ul li{display:list-item!important;list-style:none!important;list-style-type:none!important;margin:0!important;padding:0!important}
.m-flinks ul li::marker{content:""!important;display:none!important;color:transparent!important;font-size:0!important}
.m-flinks a{display:inline-block!important;padding:4px 12px!important;color:#f3d8d8!important;font-size:12px!important;border-right:1px solid rgba(255,255,255,.25)!important}
.m-flinks ul li:last-child a{border-right:0!important}

/* ===== 服务图标条 移动端 ===== */
.hust-services{padding:18px 14px}
.hust-services .container{display:block!important;width:100%!important}
.hust-services .sv-logo{display:none}
.hust-services .sv-grid{display:grid!important;grid-template-columns:repeat(5,minmax(0,1fr))!important;gap:8px!important;width:100%!important}
.hust-services .sv-grid a{font-size:11px;line-height:1.3;padding:4px 2px}
.hust-services .sv-ic{width:32px;height:32px}

/* ===== 内页通用 ===== */
.m-twocol{display:grid;grid-template-columns:1fr;gap:18px;padding:18px 14px}
.m-topics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;padding:18px 14px}
.m-topics .card{display:block;position:relative;overflow:hidden}
.m-topics .card img{width:100%;height:120px;object-fit:cover}
.m-topics .card .mask{position:absolute;inset:0;background:linear-gradient(180deg,transparent 60%,rgba(0,0,0,.7));display:flex;align-items:flex-end;padding:8px;color:#fff;font-size:12px;font-weight:bold}
article{padding:18px 14px;line-height:1.9;font-size:14px}
article img{height:auto}