/* ==========================================================
 * vip3mb00340 - 仿北京大学 PC 端样式
 * 主红 #94070A / 次红 #C72E2E / 米色 #F5F2EC / 暗褐 #3a2d2a
 * ========================================================== */
:root{
  --pku-red:#94070A;
  --pku-red-2:#C72E2E;
  --pku-red-deep:#7a060a;
  --pku-cream:#F5F2EC;
  --pku-cream-2:#EFE9DD;
  --pku-cream-3:#E8DFC9;
  --pku-ink:#1c1c1c;
  --pku-gray:#707070;
  --pku-gray-2:#a4a4a4;
  --pku-dark:#3a2d2a;
  --pku-dark-2:#2a201d;
}
*,*:before,*:after{box-sizing:border-box}
html,body{margin:0;padding:0}
body.pku-body{
  font:14px/1.7 "Microsoft YaHei","PingFang SC","Hiragino Sans GB","Noto Sans CJK SC",Arial,sans-serif;
  color:var(--pku-ink);background:#fff;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;border:0;vertical-align:middle}
a{color:inherit;text-decoration:none;transition:color .25s}
a:hover{color:var(--pku-red)}
ul,ol,li,h1,h2,h3,h4,h5,h6,p,dl,dd{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;background:transparent;border:0;color:inherit}
.pku-wrap{max-width:1320px;margin:0 auto;padding:0 30px}

/* ===================== 顶部红色细条 ===================== */
.pku-topbar{background:var(--pku-red);color:#fff;font-size:13px;line-height:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.pku-topbar-in{display:flex;align-items:center;justify-content:space-between;height:36px}
.pku-topbar a{color:#fff;opacity:.9;padding:0 6px}
.pku-topbar a:hover{color:#fff;opacity:1;text-decoration:underline}
.pku-topbar .sep{opacity:.4;margin:0 2px}
.pku-mini,.pku-mini-r{display:flex;align-items:center;gap:2px}
.pku-mini-r{gap:14px}
.pku-mini-r a{padding:0}

/* ===================== 主导航 ===================== */
.pku-mast{position:relative;background:#fff;border-bottom:1px solid #f1ece2;z-index:50;transition:box-shadow .25s}
.pku-mast.is-shadow{box-shadow:0 4px 18px rgba(0,0,0,.08)}
.pku-mast-in{display:flex;align-items:center;justify-content:space-between;height:90px;gap:30px}
.pku-logo{display:flex;align-items:center;gap:14px;flex-shrink:0}
.pku-logo img{height:54px;width:auto}
.pku-lg-txt{display:flex;flex-direction:column;line-height:1.2}
.pku-lg-txt strong{font-size:24px;color:var(--pku-red);font-weight:700;letter-spacing:6px;font-family:"FangSong","STFangsong","Microsoft YaHei",serif}
.pku-lg-txt em{font-size:11px;color:var(--pku-red);letter-spacing:3px;font-style:normal;margin-top:3px}
.pku-lg-fb:before{content:"北大";display:inline-block;padding:8px 14px;border-radius:50%;background:var(--pku-red);color:#fff;font-weight:700;margin-right:10px}

.pku-nav-wrap{flex:1;display:flex;justify-content:center}
.pku-nav{display:flex;align-items:center;gap:34px}
.pku-nav>li{position:relative}
.pku-nav>li>a{display:inline-block;font-size:16px;color:var(--pku-ink);padding:6px 0;position:relative;font-weight:500}
.pku-nav>li>a:hover,.pku-nav>li.cur>a{color:var(--pku-red)}
.pku-nav>li>a:after{content:"";position:absolute;left:50%;right:50%;bottom:-6px;height:2px;background:var(--pku-red);transition:left .3s,right .3s}
.pku-nav>li>a:hover:after,.pku-nav>li.cur>a:after{left:0;right:0}

.pku-tools{display:flex;align-items:center;gap:14px;flex-shrink:0}
.pku-tool{width:38px;height:38px;border-radius:50%;border:1px solid #d8d2c5;display:inline-flex;align-items:center;justify-content:center;color:var(--pku-ink);font-size:13px;font-weight:600;letter-spacing:.5px;cursor:pointer;transition:all .2s}
.pku-tool:hover{background:var(--pku-red);color:#fff;border-color:var(--pku-red)}

.pku-burger{display:none;width:40px;height:40px;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.pku-burger span{display:block;width:22px;height:2px;background:var(--pku-ink)}

.pku-search-pop{position:absolute;right:30px;top:90px;background:#fff;padding:14px;box-shadow:0 8px 22px rgba(0,0,0,.12);border-radius:6px;z-index:60}
.pku-search-pop[hidden]{display:none}
.pku-search-pop input[type=text]{width:260px;height:36px;padding:0 12px;border:1px solid #ddd;border-radius:4px;font-size:14px;outline:none}
.pku-search-pop input[type=text]:focus{border-color:var(--pku-red)}
.pku-search-pop button[type=submit]{height:36px;padding:0 18px;background:var(--pku-red);color:#fff;border-radius:4px;margin-left:6px}

/* 抽屉 */
.pku-drawer{position:fixed;inset:0;background:rgba(0,0,0,.4);display:none;z-index:200}
.pku-drawer.on{display:block}
.pku-drawer-panel{position:absolute;right:0;top:0;width:340px;max-width:90vw;height:100%;background:#fff;padding:24px;overflow-y:auto;animation:slideIn .25s}
@keyframes slideIn{from{transform:translateX(100%)}to{transform:translateX(0)}}
.pku-drawer-close{position:absolute;right:12px;top:8px;width:32px;height:32px;font-size:24px;color:#999}
.pku-drawer h3{font-size:18px;color:var(--pku-red);margin-bottom:14px;border-bottom:2px solid var(--pku-red);padding-bottom:8px}
.pku-drawer ul li{padding:10px 0;border-bottom:1px dashed #eee}

/* ===================== 探索北大 悬浮按钮 ===================== */
.pku-explore{position:fixed;right:0;top:38%;width:56px;height:56px;border-radius:50%;background:var(--pku-red);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;line-height:1.15;z-index:80;box-shadow:0 6px 14px rgba(148,7,10,.4);text-align:center;font-weight:600;letter-spacing:1px}
.pku-explore:hover{color:#fff;background:var(--pku-red-2);transform:translateX(-4px) scale(1.05)}
.pku-explore span{display:block}

/* ===================== 通用标题 ===================== */
.sec-tt{font-size:34px;color:var(--pku-ink);font-weight:300;letter-spacing:6px;line-height:1.4;margin-bottom:30px;text-align:center}
.sec-tt span{display:inline-block}
.sec-tt i{display:inline-block;margin:0 8px;color:var(--pku-red);font-style:normal;font-weight:700;font-size:32px;vertical-align:middle}
.sec-tt-c{margin-bottom:36px}
.sec-tt-w{color:#fff}
.ne-dot{display:inline-block;width:34px;height:34px;border:1px dashed var(--pku-red);border-radius:50%;position:relative;vertical-align:middle;margin-right:12px}
.ne-dot:before{content:"L";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);font-size:14px;color:var(--pku-red);font-family:Georgia,serif}
.ne-dot-w{border-color:#fff}
.ne-dot-w:before{color:#fff}

/* ===================== Banner 轮播 ===================== */
.pku-banner{position:relative;height:600px;overflow:hidden;background:var(--pku-cream-2)}
.bn-stage{position:absolute;inset:0}
.bn-slide{position:absolute;inset:0;display:block;opacity:0;transition:opacity 1s ease;overflow:hidden}
.bn-slide.on{opacity:1;z-index:2}
.bn-bg,.bn-fg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.bn-fg{opacity:.55;mix-blend-mode:multiply}
.bn-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(245,242,236,.2) 0%,rgba(245,242,236,.1) 50%,rgba(148,7,10,.25) 100%)}
.bn-cap{position:absolute;left:0;right:0;top:46%;transform:translateY(-50%);text-align:center;z-index:3;padding:0 30px}
.bn-cap .bn-t{display:block;font-size:60px;font-weight:700;color:var(--pku-red);letter-spacing:14px;text-shadow:0 4px 14px rgba(255,255,255,.4);font-family:"FangSong","STSong","SimSun",serif;line-height:1.3}
.bn-bar{display:block;width:80px;height:2px;background:var(--pku-red);margin:24px auto}
.bn-cap .bn-d{display:block;font-size:30px;color:var(--pku-ink);letter-spacing:8px;font-weight:400;font-style:normal;font-family:"FangSong","STSong","SimSun",serif}

.bn-arrow{position:absolute;top:50%;transform:translateY(-50%);width:50px;height:50px;border-radius:50%;background:rgba(255,255,255,.4);color:var(--pku-red);font-size:28px;line-height:1;z-index:5;backdrop-filter:blur(4px);transition:background .25s}
.bn-arrow:hover{background:#fff}
.bn-prev{left:30px}
.bn-next{right:90px}
.bn-pages{position:absolute;right:30px;bottom:50px;display:flex;align-items:center;gap:14px;z-index:5;color:var(--pku-ink);font-size:18px;font-weight:500}
.bn-pages .pg{font-size:18px;color:var(--pku-gray);background:transparent;padding:4px 6px}
.bn-pages .pg.on{color:var(--pku-red);font-weight:700;font-size:22px}
.bn-pages .pg-line{display:inline-block;width:50px;height:1px;background:var(--pku-gray);margin:0 4px}
.bn-pages .pg-next{color:var(--pku-red);font-size:24px;margin-left:8px}
.bn-down{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);z-index:5}
.bn-down i{display:block;width:14px;height:14px;border-right:2px solid var(--pku-red);border-bottom:2px solid var(--pku-red);transform:rotate(45deg);animation:bnArr 1.6s infinite}
@keyframes bnArr{0%,100%{opacity:.2;transform:rotate(45deg) translate(-2px,-2px)}50%{opacity:1;transform:rotate(45deg) translate(2px,2px)}}

/* ===================== 北大·要闻 ===================== */
.pku-news{padding:70px 0 60px;background:var(--pku-cream)}
.news-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.nws-big{position:relative;display:block;height:480px;overflow:hidden;border-radius:2px;background:#000}
.nws-big img{width:100%;height:100%;object-fit:cover;transition:transform .6s;opacity:.92}
.nws-big:hover img{transform:scale(1.04)}
.nws-big-cap{position:absolute;left:0;right:0;bottom:0;background:rgba(0,0,0,.55);color:#fff;padding:20px 24px;font-size:18px;font-weight:600;line-height:1.5}
.nws-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.nws-card{background:#fff;padding:30px 24px 24px;display:flex;flex-direction:column;justify-content:flex-end;min-height:228px;border-bottom:2px solid transparent;transition:all .25s;color:var(--pku-ink)}
.nws-card:hover{border-bottom-color:var(--pku-red);box-shadow:0 6px 20px rgba(0,0,0,.06);color:var(--pku-red);transform:translateY(-3px)}
.nws-card strong{font-size:16px;font-weight:600;line-height:1.6;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.nws-bar{display:block;width:30%;height:1px;background:var(--pku-red);margin-top:14px}

.news-row2{display:grid;grid-template-columns:1fr 2fr;gap:24px;margin-top:24px}
.nws-cards-2{grid-template-columns:1fr;height:100%}
.nws-cards-2 .nws-card{min-height:180px}
.nws-img{position:relative;display:block;overflow:hidden;border-radius:2px;background:#0a3a8a;color:#fff;height:380px}
.nws-img img{width:100%;height:100%;object-fit:cover;opacity:.85;transition:transform .6s}
.nws-img:hover img{transform:scale(1.04)}
.nws-img-cap{position:absolute;left:24px;bottom:24px;font-size:22px;font-weight:600;color:#fff;letter-spacing:2px}

.news-entries{display:flex;justify-content:center;gap:90px;margin-top:50px}
.news-entries .ne-it{display:flex;align-items:center;color:var(--pku-red);font-size:16px;font-weight:500}
.news-entries .ne-it em{font-style:normal}

/* ===================== 专题·网站 ===================== */
.pku-topics{padding:70px 0;background:#fff}
.tp-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:34px}
.tp-head .sec-tt{margin-bottom:0;text-align:left}
.tp-more{display:inline-flex;align-items:center;color:var(--pku-red);font-size:14px}
.tp-list{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;align-items:stretch}
.tp-card{position:relative;display:block;height:520px;overflow:hidden;background:var(--pku-red-deep);color:#fff}
.tp-card img{width:100%;height:100%;object-fit:cover;opacity:.95;transition:transform .6s}
.tp-card:hover img{transform:scale(1.05)}
.tp-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 30%,rgba(0,0,0,.6) 100%)}
.tp-cap{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);text-align:center;color:#fff;font-size:24px;font-weight:600;letter-spacing:6px;writing-mode:vertical-rl;text-orientation:upright;padding:0 22px;line-height:1.4;max-height:80%;overflow:hidden}
.tp-more-in{position:absolute;left:0;right:0;bottom:24px;text-align:center;color:#fff;font-size:13px;letter-spacing:2px;opacity:.85}
.tp-card:hover .tp-more-in{opacity:1}

/* ===================== 学术·科研 ===================== */
.pku-research{padding:80px 0;background:#fff;position:relative}
.rs-grid{display:grid;grid-template-columns:1.6fr 1fr 0.6fr;gap:30px;align-items:center}
.rs-pic{position:relative;background:var(--pku-cream-2);padding:30px;border-radius:2px}
.rs-pic img{width:100%;height:380px;object-fit:cover;display:block}
.rs-card{background:var(--pku-red);color:#fff;padding:30px;min-height:380px;display:flex;flex-direction:column;border-radius:2px}
.rs-card-in{display:block;color:#fff}
.rs-card-in:hover{color:#fff;opacity:.9}
.rs-thumb{display:block;height:160px;overflow:hidden;margin-bottom:18px;background:#fff}
.rs-thumb img{width:100%;height:100%;object-fit:cover}
.rs-card strong{display:-webkit-box;font-size:18px;line-height:1.5;font-weight:600;margin-bottom:14px;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.rs-card em{display:-webkit-box;font-size:13px;font-style:normal;line-height:1.8;color:rgba(255,255,255,.8);-webkit-line-clamp:6;-webkit-box-orient:vertical;overflow:hidden}
.rs-side{text-align:center}
.rs-side .sec-tt{text-align:center;margin-bottom:20px;font-size:30px}
.rs-more{display:inline-flex;align-items:center;color:var(--pku-red);font-size:14px;flex-direction:column;gap:8px}

/* ===================== 北大·人物 ===================== */
.pku-people{padding:60px 0;background:#fff}
.pp-grid{display:grid;grid-template-columns:1fr 2fr;gap:40px;align-items:center}
.pp-side{text-align:center}
.pp-side .sec-tt{font-size:30px;text-align:center;margin-bottom:18px}
.pp-more{display:inline-flex;align-items:center;color:var(--pku-red);font-size:14px;flex-direction:column;gap:8px}
.pp-pics{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.pp-it{position:relative;display:block;height:340px;overflow:hidden}
.pp-it:nth-child(2){margin-top:0}
.pp-it img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.pp-it:hover img{transform:scale(1.05)}
.pp-cap{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(180deg,transparent,rgba(0,0,0,.7));color:#fff;padding:30px 20px 18px;font-size:16px;font-weight:600}

/* ===================== 校园·生活（深褐底色错位拼图） ===================== */
.pku-campus{padding:60px 0;background:var(--pku-dark)}
.cp-grid{position:relative}
.cp-mosaic{display:grid;grid-template-columns:repeat(12,1fr);grid-template-rows:repeat(8,80px);gap:10px;position:relative}
.cp-art{grid-column:1/4;grid-row:2/6;position:relative;overflow:hidden}
.cp-art img{width:100%;height:100%;object-fit:cover}
.cp-sport{grid-column:4/7;grid-row:2/6;position:relative;overflow:hidden}
.cp-sport img{width:100%;height:100%;object-fit:cover}
.cp-hero{grid-column:7/13;grid-row:1/7;position:relative;overflow:hidden}
.cp-hero-img{display:block;width:100%;height:100%;position:absolute;inset:0}
.cp-hero img{width:100%;height:100%;object-fit:cover}
.cp-hero-cap{position:absolute;left:50px;bottom:30px;color:#fff;z-index:3}
.cp-hero-cap .sec-tt{margin-bottom:18px;text-align:left}
.cp-hero-more{display:inline-flex;align-items:center;color:#fff;font-size:14px}
.cp-club{grid-column:4/7;grid-row:6/9;position:relative;overflow:hidden}
.cp-club img{width:100%;height:100%;object-fit:cover}
.cp-court{grid-column:1/5;grid-row:6/9;position:relative;overflow:hidden}
.cp-court img{width:100%;height:100%;object-fit:cover}
.cp-mask{position:absolute;inset:0;background:rgba(40,50,80,.4)}
.cp-mask-y{background:rgba(120,80,40,.45)}
.cp-cap{position:absolute;left:0;right:0;top:50%;transform:translateY(-50%);text-align:center;color:#fff;z-index:2}
.cp-cap i{display:block;width:30px;height:30px;margin:0 auto 8px;border:1px solid #fff;border-radius:50%}
.cp-cap em{display:block;font-style:normal;font-size:18px;letter-spacing:4px;font-weight:500}
.cp-icon{grid-row:6/9;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;background:rgba(40,30,30,.85);transition:background .3s}
.cp-icon:hover{background:var(--pku-red);color:#fff}
.cp-icon i{display:block;width:34px;height:34px;border:1px solid #fff;border-radius:50%;margin-bottom:8px;position:relative}
.cp-icon i:before{content:"♥";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);font-size:16px}
.cp-icon i.ic-podium:before{content:"⌗"}
.cp-icon i.ic-film:before{content:"●"}
.cp-icon em{font-style:normal;font-size:14px;letter-spacing:2px}
.cp-icon-1{grid-column:7/9}
.cp-icon-2{grid-column:9/11;background:var(--pku-red)}
.cp-icon-3{grid-column:11/13}

/* ===================== 通知公告 + 媒体北大 ===================== */
.pku-notice{padding:60px 0;background:var(--pku-cream)}
.nt-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.nt-hd{display:flex;align-items:center;justify-content:space-between;border-bottom:2px solid #ddd6c6;margin-bottom:14px;padding-bottom:10px}
.nt-hd h3{font-size:24px;font-weight:600;letter-spacing:2px}
.nt-hd h3 .rd{color:var(--pku-red);position:relative;padding-bottom:14px}
.nt-hd h3 .rd:after{content:"";position:absolute;left:0;right:0;bottom:-12px;height:3px;background:var(--pku-red)}
.nt-hd h3 i{margin:0 12px;color:#bbb;font-style:normal}
.nt-hd h3 .more{font-size:13px;color:var(--pku-gray);font-weight:400;margin-left:6px}
.nt-more{font-size:13px;color:var(--pku-gray)}
.nt-more:hover{color:var(--pku-red)}

/* 两栏列表统一对齐：去除原 ul 默认 margin/padding，第一项 margin-top:0，每条 li 等高 */
.nt-list,.nt-mlist{margin:0;padding:0;list-style:none}
.nt-list li,.nt-mlist li{list-style:none}
.nt-list li:first-child,.nt-mlist li:first-child{margin-top:0}

.nt-list li{background:#fff;margin-bottom:10px}
.nt-list li a{display:flex;justify-content:space-between;align-items:center;padding:18px 22px;border-bottom:2px solid #d8c79a;min-height:96px;box-sizing:border-box}
.nt-list li a:hover{background:var(--pku-cream-2)}
.nt-list li strong{font-size:15px;font-weight:500;color:var(--pku-ink);flex:1;line-height:1.6}
.nt-list li em{font-size:12px;color:var(--pku-gray);font-style:normal;margin-left:18px;flex-shrink:0}

.nt-mlist li{background:#f3ede0;margin-bottom:10px;border-bottom:1px solid #d6cdb6}
.nt-mlist li a{display:flex;align-items:stretch;padding:0;min-height:96px;box-sizing:border-box}
.nt-mlist li a:hover .nt-src{background:var(--pku-red);color:#fff}
.nt-src{width:130px;display:flex;align-items:center;justify-content:center;text-align:center;background:#ddd2b6;color:#7a6a3e;font-weight:600;letter-spacing:2px;padding:8px 6px;flex-shrink:0;transition:all .25s;line-height:1.4;font-size:13px}
.nt-thumb{width:120px;flex-shrink:0;align-self:center;margin:8px 0 8px 16px;height:72px;overflow:hidden;background:var(--pku-cream-2);border-radius:2px}
.nt-thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .4s}
.nt-mlist li a:hover .nt-thumb img{transform:scale(1.06)}
.nt-mlist li strong{padding:0 22px;font-size:15px;font-weight:500;flex:1;line-height:1.6;color:var(--pku-ink);align-self:center;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden}

/* ===================== 合作·交流 ===================== */
.pku-coop{padding:70px 0;background:#fff}
.cp2-row{display:grid;grid-template-columns:1.4fr 1fr;gap:18px}
.cp2-big{position:relative;display:block;height:520px;overflow:hidden;background:#000}
.cp2-big img{width:100%;height:100%;object-fit:cover;opacity:.9;transition:transform .6s}
.cp2-big:hover img{transform:scale(1.05)}
.cp2-cap{position:absolute;left:0;right:0;bottom:0;color:#fff;background:linear-gradient(180deg,transparent,rgba(0,0,0,.7));padding:30px 26px 18px;font-size:18px;font-weight:600}
.cp2-cap strong{font-size:18px;letter-spacing:2px}
.cp2-grid4{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:18px}
.cp2-it{position:relative;overflow:hidden;background:#222;display:block}
.cp2-it img{width:100%;height:100%;object-fit:cover;opacity:.9;transition:transform .6s}
.cp2-it:hover img{transform:scale(1.05)}
.cp2-more-wrap{text-align:center;margin-top:36px}
.cp2-more{display:inline-flex;align-items:center;color:var(--pku-red);font-size:14px}

/* ===================== 参观·导览 ===================== */
.pku-tour{padding:70px 0 80px;background:#fff;position:relative}
.tour-wrap{text-align:center}
.tour-list{display:flex;justify-content:center;gap:60px;margin-top:40px}
.tour-list li a{display:flex;flex-direction:column;align-items:center;gap:14px;color:var(--pku-ink);transition:transform .3s}
.tour-list li a:hover{transform:translateY(-4px);color:var(--pku-red)}
.tic{width:64px;height:64px;border:1.5px solid #999;border-radius:4px;display:flex;align-items:center;justify-content:center;position:relative}
.tour-list li a:hover .tic{border-color:var(--pku-red)}
.tic:before{content:"";display:block;width:30px;height:30px;background:#666}
.tic-cal:before{background:linear-gradient(180deg,#666 30%,#fff 30%);border-top:3px solid #666}
.tic-bld:before{clip-path:polygon(50% 0,100% 100%,0 100%);background:#666}
.tic-map:before{clip-path:polygon(0 0,100% 30%,100% 100%,0 70%);background:#666}
.tic-gym:before{border-radius:50%;background:#666}
.tour-list li em{font-style:normal;font-size:16px;letter-spacing:2px}

/* ===================== Footer ===================== */
.pku-footer{font-size:13px}
.pku-foot-bar{background:var(--pku-red);color:#fff;padding:24px 0}
.pku-foot-bar-in{display:flex;align-items:center;justify-content:space-between;gap:30px}
.ft-quick{display:flex;flex-wrap:wrap;gap:0 50px;flex:1;justify-content:center}
.ft-quick li a{color:#fff;font-size:15px;letter-spacing:2px;opacity:.95}
.ft-quick li a:hover{color:#ffd97a}
.ft-soc{display:flex;gap:14px;flex-shrink:0}
.ft-soc a{width:36px;height:36px;border-radius:50%;background:#fff;color:var(--pku-red);display:inline-flex;align-items:center;justify-content:center}
.ft-soc a:hover{background:#ffd97a;color:var(--pku-red)}

.pku-foot-cr{background:var(--pku-dark-2);color:#bdb6a6;padding:38px 0 30px}
.pku-foot-cr-in{text-align:center}
.ft-brand{display:flex;align-items:center;justify-content:center;gap:16px;margin-bottom:20px}
.ft-brand img{height:50px}
.ft-brand-txt{text-align:left;color:#fff}
.ft-brand-txt strong{display:block;font-size:22px;letter-spacing:8px;font-family:"FangSong",serif}
.ft-brand-txt em{display:block;font-size:11px;letter-spacing:3px;font-style:normal;color:#cab787;margin-top:4px}
.ft-flink{margin-bottom:18px;line-height:2}
.ft-flink strong{color:#cab787}
.ft-flink ul{display:inline-flex;flex-wrap:wrap;gap:6px 18px;list-style:none;margin:0;padding:0}
.ft-flink li a{color:#bdb6a6}
.ft-flink li a:hover{color:#fff}
.ft-cr{font-size:12px;color:#8e8676;line-height:2.2}
.ft-cr a{color:#cab787}
.ft-cr a:hover{color:#fff}
.ft-cr .sep{margin:0 10px;opacity:.4}
.ft-cr .beian a{color:#cab787}

/* ===================== 列表/详情页 ===================== */
.pku-page{padding:40px 0 60px;background:var(--pku-cream)}
.page-wrap{display:grid;grid-template-columns:240px 1fr;gap:30px;align-items:flex-start}
.pg-side{background:#fff;padding:24px 20px}
.pg-side h3{font-size:20px;color:var(--pku-red);border-bottom:2px solid var(--pku-red);padding-bottom:10px;margin-bottom:14px;letter-spacing:2px}
.pg-side ul li{padding:10px 0;border-bottom:1px dashed #eee}
.pg-side ul li a:hover{color:var(--pku-red);padding-left:6px}
.pg-main{background:#fff;padding:24px 30px;min-height:400px}
.pg-bread{font-size:13px;color:var(--pku-gray);padding-bottom:14px;border-bottom:1px solid #eee;margin-bottom:18px}
.pg-bread a{color:var(--pku-gray)}
.pg-bread a:hover{color:var(--pku-red)}
.pg-tt{margin:0 0 18px;font-size:24px;font-weight:600;color:var(--pku-red);letter-spacing:2px;padding-bottom:10px;border-bottom:2px solid var(--pku-red);display:inline-block}
.pg-list li{display:flex;justify-content:space-between;align-items:center;padding:14px 0;border-bottom:1px dashed #eee}
.pg-list li a{flex:1;font-size:15px}
.pg-list li:before{content:"·";color:var(--pku-red);margin-right:10px;font-weight:700;font-size:20px}
.pg-list li .d{font-size:12px;color:var(--pku-gray);flex-shrink:0;margin-left:18px}
.pg-pagebar{margin-top:24px;text-align:center;font-size:14px}
.pg-pagebar a,.pg-pagebar span{display:inline-block;padding:6px 12px;margin:0 3px;border:1px solid #ddd;border-radius:3px;color:var(--pku-ink)}
.pg-pagebar a:hover,.pg-pagebar .current{background:var(--pku-red);color:#fff;border-color:var(--pku-red)}
.pg-art h1{font-size:26px;line-height:1.5;color:var(--pku-ink);margin-bottom:14px;text-align:center}
.pg-art .meta{text-align:center;color:var(--pku-gray);font-size:13px;padding-bottom:14px;border-bottom:1px solid #eee;margin-bottom:20px}
.pg-art .body{font-size:15px;line-height:1.95;color:#333}
.pg-art .body img{max-width:100%;height:auto;display:block;margin:14px auto}

/* ===================== 响应式断点 ===================== */
@media (max-width:1280px){
  body.pku-body,.pku-wrap{max-width:100%}
  .pku-wrap{padding:0 20px}
  .pku-nav{gap:22px}
  .pku-nav>li>a{font-size:15px}
  .bn-cap .bn-t{font-size:50px;letter-spacing:10px}
  .bn-cap .bn-d{font-size:24px;letter-spacing:6px}
}
@media (max-width:1024px){
  body.pku-body{font-size:13px}
  .pku-mast-in{height:72px;gap:18px}
  .pku-logo img{height:44px}
  .pku-lg-txt strong{font-size:20px;letter-spacing:4px}
  .pku-nav{gap:14px}
  .pku-nav>li>a{font-size:14px}
  .pku-banner{height:480px}
  .bn-cap .bn-t{font-size:42px;letter-spacing:8px}
  .bn-cap .bn-d{font-size:20px;letter-spacing:4px}
  .nws-big{height:380px}
  .nws-img{height:300px}
  .tp-card{height:420px}
  .rs-grid{grid-template-columns:1fr 1fr}
  .rs-side{grid-column:1/3;text-align:center;margin-top:14px}
  .pp-grid{grid-template-columns:1fr 2fr}
  .cp-mosaic{grid-template-rows:repeat(8,60px)}
  .tour-list{gap:36px}
}
@media (max-width:768px){
  body.pku-body{padding-bottom:0}
  .pku-topbar{display:none}
  .pku-mast-in{height:60px}
  .pku-logo img{height:36px}
  .pku-lg-txt strong{font-size:16px;letter-spacing:2px}
  .pku-lg-txt em{font-size:9px;letter-spacing:1px}
  .pku-nav-wrap,.pku-tools{display:none}
  .pku-burger{display:flex}
  .pku-explore{width:46px;height:46px;font-size:11px}
  .pku-banner{height:340px}
  .bn-cap .bn-t{font-size:28px;letter-spacing:6px}
  .bn-cap .bn-d{font-size:14px;letter-spacing:2px}
  .bn-arrow{width:36px;height:36px;font-size:20px}
  .bn-prev{left:10px}
  .bn-next{right:10px}
  .bn-pages{right:14px;bottom:20px;gap:8px;font-size:14px}
  .bn-pages .pg-line{width:24px}
  .pku-news,.pku-topics,.pku-research,.pku-people,.pku-campus,.pku-notice,.pku-coop,.pku-tour{padding:40px 0}
  .sec-tt{font-size:24px;letter-spacing:3px}
  .news-grid,.news-row2,.tp-list,.rs-grid,.pp-grid,.cp2-row,.cp2-grid4,.nt-grid{grid-template-columns:1fr}
  .nws-cards{grid-template-columns:1fr 1fr;gap:10px}
  .nws-big,.nws-img,.cp2-big{height:240px}
  .tp-card{height:280px}
  .tp-cap{writing-mode:horizontal-tb;text-orientation:initial;font-size:18px;letter-spacing:3px}
  .rs-pic img{height:200px}
  .rs-card{min-height:auto;padding:20px}
  .pp-it{height:220px}
  .pp-it:nth-child(2){margin-top:0}
  .cp-mosaic{grid-template-columns:repeat(2,1fr);grid-template-rows:repeat(8,100px)}
  .cp-art{grid-column:1/2;grid-row:1/3}
  .cp-sport{grid-column:2/3;grid-row:1/3}
  .cp-hero{grid-column:1/3;grid-row:3/6}
  .cp-club{grid-column:1/2;grid-row:6/8}
  .cp-court{grid-column:2/3;grid-row:6/8}
  .cp-icon-1{grid-column:1/2;grid-row:8/9}
  .cp-icon-2{grid-column:2/3;grid-row:8/9}
  .cp-icon-3{display:none}
  .cp-hero-cap{left:20px;bottom:14px}
  .pku-foot-bar-in{flex-direction:column;gap:14px}
  .ft-quick{gap:6px 24px}
  .ft-cr{font-size:11px}
  .ft-cr .sep{display:none}
  .ft-cr span{display:block;line-height:1.8}
  .page-wrap{grid-template-columns:1fr}
  .pg-side{order:2}
  .tour-list{flex-wrap:wrap;gap:30px}
}