/* ============================================================
   vip3mb00344 - 仿哈尔滨工业大学官网 PC 端样式
   主题色：#1A5F7A（深青蓝主导航）/ #0E3D52（深色）/ #A52A37（酒红 banner）/ #F5F6F8（背景灰）
============================================================ */
*{margin:0;padding:0;box-sizing:border-box}
html,body{font:14px/1.6 "Microsoft YaHei","PingFang SC","Hiragino Sans GB",Arial,sans-serif;color:#333;background:#fff;-webkit-font-smoothing:antialiased}
img{border:0;vertical-align:middle;max-width:100%}
a{color:#333;text-decoration:none;transition:color .25s}
a:hover{color:#1A5F7A}
ul,ol{list-style:none}
em,i{font-style:normal}
.sr-only{position:absolute !important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

.hit-body{min-width:1280px;background:#fff;overflow-x:hidden}
.hit-wrap{width:1280px;margin:0 auto;position:relative}

/* ========== Banner（顶部头条 + 主导航 + 大背景轮播） ========== */
.hit-banner{position:relative;height:780px;overflow:hidden;background:#7A1F26}
.hb-bg{position:absolute;inset:0;background:linear-gradient(135deg,#5C1820 0%,#7A1F26 40%,#A52A37 100%);z-index:1}
.hb-slides{position:absolute;inset:0;z-index:2}
.hb-slide{display:block;position:absolute;inset:0;background-position:center center;background-size:cover;opacity:0;transition:opacity 1s ease;text-decoration:none}
.hb-slide.on{opacity:1;z-index:3}
.hb-slide.bf-1{background:linear-gradient(135deg,#5C1820 0%,#7A1F26 50%,#A52A37 100%)}
.hb-slide.bf-2{background:linear-gradient(135deg,#0E3D52 0%,#1A5F7A 50%,#287D9F 100%)}
.hb-slide.bf-3{background:linear-gradient(135deg,#7A1F26 0%,#3F0E14 50%,#1A5F7A 100%)}
.hit-banner::after{content:'';position:absolute;left:0;right:0;top:0;height:200px;background:linear-gradient(180deg,rgba(0,0,0,.35) 0%,rgba(0,0,0,0) 100%);z-index:4;pointer-events:none}

/* 顶部覆盖在 banner 上的头部条 */
.hit-top{color:#fff;position:relative;z-index:10}
.hit-top-on-banner{position:absolute;left:0;right:0;top:0;background:transparent;border-bottom:1px solid rgba(255,255,255,.18)}
.hit-top-solid{background:#1A5F7A;border-bottom:1px solid rgba(0,0,0,.05)}
.hit-top-in{padding:14px 30px;display:flex;align-items:center;gap:30px;justify-content:space-between}
.hit-logo{display:flex;align-items:center;gap:14px;color:#fff;flex:0 0 auto}
.hit-logo:hover{color:#fff}
.hit-badge{width:60px;height:60px;display:inline-flex;align-items:center;justify-content:center;flex:0 0 60px}
.hit-badge svg{width:60px;height:60px;display:block}
.hit-logo-txt{display:flex;flex-direction:column;line-height:1.2}
.hit-logo-txt strong{font-size:24px;font-weight:600;letter-spacing:2px}
.hit-logo-txt em{font-size:11px;margin-top:5px;opacity:.95;letter-spacing:1px}
.hit-tools{font-size:12px;display:flex;align-items:center;gap:8px;flex-wrap:nowrap}
.hit-tools a{color:#fff;opacity:.92;padding:5px 10px;font-size:12px;border:1px solid rgba(255,255,255,.18);border-radius:2px;white-space:nowrap}
.hit-tools a:hover{opacity:1;background:rgba(255,255,255,.1);color:#fff}
.hit-tools a.lang{border:0;padding:5px 4px}
.hit-tools .search-btn{background:transparent;border:0;color:#fff;cursor:pointer;padding:4px;display:inline-flex}

/* 主导航 */
.hit-nav{flex:1;margin:0 20px}
.hit-nav ul{display:flex;justify-content:flex-end;align-items:center;gap:8px}
.hit-nav>ul>li{position:relative}
.hit-nav>ul>li>a{display:block;padding:10px 14px;font-size:15px;color:#fff;font-weight:500;transition:all .25s;border-radius:2px}
.hit-nav>ul>li:hover>a,.hit-nav>ul>li.cur>a{background:rgba(255,255,255,.12);color:#fff}

/* 滚动后固定深色 mast */
.hit-mast{position:fixed;left:0;right:0;top:-90px;z-index:200;background:#1A5F7A;color:#fff;box-shadow:0 2px 8px rgba(0,0,0,.15);transition:top .35s ease}
.hit-mast.on{top:0}
.hit-mast-in{padding:8px 30px;display:flex;align-items:center;gap:18px}
.hit-logo-sm{display:flex;align-items:center;gap:10px;color:#fff;flex:0 0 auto}
.hit-logo-sm svg{width:42px;height:42px}
.hit-logo-sm .txt{display:flex;flex-direction:column;line-height:1.15}
.hit-logo-sm .txt b{font-size:16px;letter-spacing:1px}
.hit-logo-sm .txt i{font-size:10px;opacity:.85}
.hit-nav-sm{flex:1;margin:0 10px}
.hit-nav-sm ul{display:flex;justify-content:flex-end;gap:4px}
.hit-nav-sm ul li a{display:block;padding:8px 14px;font-size:14px;color:#fff;border-radius:2px}
.hit-nav-sm ul li:hover a,.hit-nav-sm ul li.cur a{background:rgba(255,255,255,.12)}

/* Banner 文案 */
.hb-words{position:absolute;left:8%;top:32%;z-index:6;color:#F4D9A0;text-shadow:0 2px 8px rgba(0,0,0,.4)}
.hb-tag{display:inline-block;font-family:"楷体",KaiTi,STKaiti,serif;font-size:30px;letter-spacing:6px;color:#F4D9A0;border-top:1px solid rgba(244,217,160,.6);border-bottom:1px solid rgba(244,217,160,.6);padding:6px 50px;margin-bottom:24px}
.hb-tt{font-family:"楷体",KaiTi,STKaiti,serif;font-weight:400;line-height:1.3}
.hb-tt .line{display:block;font-size:64px;letter-spacing:6px;color:#F4D9A0;margin:6px 0}
.hb-tt .line b{background:#F4D9A0;color:#7A1F26;padding:0 12px;font-weight:500;display:inline-block;line-height:1.15}
.hb-tt .line i{font-family:"行楷","STXingkai",cursive;font-size:80px;color:#F4D9A0;font-weight:bold;padding:0 6px}

.hb-news{position:absolute;left:0;bottom:30px;z-index:6;background:rgba(0,0,0,.45);color:#fff;padding:14px 28px;font-size:15px;max-width:60%}
.hb-news .tag{background:#F4D9A0;color:#7A1F26;padding:2px 10px;font-size:13px;margin-right:10px;font-weight:500}
.hb-news a{color:#fff}
.hb-news a:hover{color:#F4D9A0}

.hb-dots{position:absolute;right:30px;bottom:36px;z-index:6;display:flex;gap:8px;align-items:center}
.hb-dots span{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.4);cursor:pointer;transition:background .25s,transform .25s}
.hb-dots span.on{background:#fff;transform:scale(1.3)}

/* ========== 通用区块 ========== */
.hit-sec{padding:50px 0;background:#F5F6F8}
.sec-hd{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.sec-hd.center{justify-content:center;position:relative;text-align:center}
.sec-hd.center .more{position:absolute;right:0;top:50%;transform:translateY(-50%)}
.sec-hd h2{font-size:28px;color:#1A5F7A;font-weight:600;letter-spacing:2px;line-height:1}
.sec-hd h2.cyan{color:#1A5F7A}
.sec-hd .more{font-size:13px;color:#1A5F7A}
.sec-hd .more:hover{color:#0E3D52;text-decoration:underline}
.sec-sub{text-align:center;font-size:14px;color:#888;margin:-12px 0 24px}

/* ========== 三栏（新闻聚焦/工大要闻/专题栏目） ========== */
.hit-news-sec{background:#F5F6F8;padding:40px 0 50px}
.news-row{display:grid;grid-template-columns:300px 1fr 320px;gap:26px;align-items:start}
.nc-left,.nc-mid,.nc-right{background:transparent}
.nc-left .sec-hd,.nc-mid .sec-hd,.nc-right .sec-hd{margin-bottom:18px}
.nc-left .sec-hd h2,.nc-mid .sec-hd h2,.nc-right .sec-hd h2{font-size:22px}
.nl-cover{display:block;position:relative;height:200px;overflow:hidden;background:linear-gradient(135deg,#0E3D52,#1A5F7A);margin-bottom:14px}
.nl-cover .ph{display:block;width:100%;height:100%;overflow:hidden}
.nl-cover .ph img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.nl-cover:hover .ph img{transform:scale(1.05)}
.nl-cover .placeholder{display:flex;align-items:center;justify-content:center;height:100%;color:#fff;background:linear-gradient(135deg,#0E3D52,#1A5F7A);font-size:14px;padding:10px;text-align:center}
.nl-cover .cap{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(180deg,rgba(0,0,0,0) 0%,rgba(0,0,0,.7) 100%);color:#fff;padding:18px 14px 12px;font-size:13px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

.nl-list{display:flex;flex-direction:column;gap:10px}
.nl-list li a{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid #e6e8eb;padding:8px;transition:all .25s}
.nl-list li a:hover{border-color:#1A5F7A;color:#1A5F7A;box-shadow:0 2px 6px rgba(26,95,122,.12)}
.nl-list li .thumb{flex:0 0 64px;height:48px;overflow:hidden;background:#1A5F7A;border-radius:1px}
.nl-list li .thumb img{width:100%;height:100%;object-fit:cover}
.nl-list li .thumb .ph{display:flex;align-items:center;justify-content:center;width:100%;height:100%;color:#fff;font-size:11px;background:linear-gradient(135deg,#0E3D52,#1A5F7A)}
.nl-list li .tt{flex:1;font-size:13px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:#333}

/* 工大要闻：双列日期+标题 */
.nm-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 26px}
.nm-it{display:block;background:#fff;border:1px solid #e6e8eb;padding:14px 16px;transition:all .25s;height:108px}
.nm-it:hover{border-color:#1A5F7A;box-shadow:0 2px 8px rgba(26,95,122,.1);transform:translateY(-2px)}
.nm-it .d{display:block;font-size:13px;color:#1A5F7A;margin-bottom:8px;font-weight:500;letter-spacing:1px}
.nm-it .tt{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:14px;line-height:1.55;color:#333}
.nm-it:hover .tt{color:#1A5F7A}

/* 专题栏目：3 张专题图 + 9 个图标 */
.nr-topics{display:flex;flex-direction:column;gap:12px;margin-bottom:18px}
.nr-t{display:block;height:90px;border-radius:2px;overflow:hidden;background:linear-gradient(135deg,#7A1F26,#A52A37);position:relative}
.nr-t:nth-child(2){background:linear-gradient(135deg,#0E3D52,#1A5F7A)}
.nr-t img{width:100%;height:100%;object-fit:cover;opacity:.95;transition:transform .5s}
.nr-t:hover img{transform:scale(1.04)}
.nr-t .tph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#fff;font-size:14px;font-weight:500;text-align:center;padding:10px}

.nr-icons{background:#fff;border:1px solid #e6e8eb;padding:14px 8px;display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.nr-icons a{display:flex;flex-direction:column;align-items:center;gap:4px;padding:8px 4px;text-align:center;color:#333;border-radius:2px;transition:background .25s}
.nr-icons a:hover{background:#F2F6F9;color:#1A5F7A}
.nr-icons .ic{display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:#F2F6F9;border-radius:4px;transition:all .25s}
.nr-icons a:hover .ic{background:#1A5F7A}
.nr-icons a:hover .ic svg{stroke:#fff !important}
.nr-icons em{font-size:12px;color:#444}

/* ========== 全景哈工大（社交侧栏 + 视频拼图） ========== */
.hit-pano-sec{background:#fff;padding:60px 0}
.pano-wrap{display:grid;grid-template-columns:60px 1fr;gap:18px;align-items:start}
.pano-side{position:relative}
.ps-icons{display:flex;flex-direction:column;gap:10px;align-items:center;padding-top:50px}
.ps-icons a{display:inline-flex;width:36px;height:36px;border-radius:6px;align-items:center;justify-content:center;overflow:hidden;transition:transform .25s}
.ps-icons a:hover{transform:translateY(-2px) scale(1.05)}
.ps-icons a:last-child{width:auto;height:auto;border-radius:0}
.pano-main{}
.pano-grid{display:grid;grid-template-columns:2fr 1fr 1fr;grid-template-rows:auto auto;gap:8px;height:520px}
.pg-main{grid-column:1;grid-row:1/3;position:relative;display:block;overflow:hidden;background:#0E3D52}
.pg-main img{width:100%;height:100%;object-fit:cover}
.pg-main .play{position:absolute;left:24px;bottom:24px;z-index:3}
.pg-main::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 60%,rgba(0,0,0,.5) 100%);z-index:1;pointer-events:none}
.pg-side{grid-column:2/4;grid-row:1;display:grid;grid-template-columns:1fr 1fr;gap:8px}
.pg-bot{grid-column:2/4;grid-row:2;display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}
.pg-it{position:relative;display:block;overflow:hidden;background:#0E3D52;min-height:100px}
.pg-it img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.pg-it:hover img{transform:scale(1.05)}
.pg-it .cap{position:absolute;left:10px;right:10px;bottom:8px;color:#fff;font-size:13px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;text-shadow:0 1px 2px rgba(0,0,0,.6);z-index:2}
.pg-it::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 50%,rgba(0,0,0,.55) 100%);z-index:1;pointer-events:none}
.pg-it .placeholder,.pg-main .placeholder{display:flex;align-items:center;justify-content:center;color:#fff;background:linear-gradient(135deg,#0E3D52,#1A5F7A);text-align:center;padding:10px;font-size:13px;width:100%;height:100%}

/* ========== 活动预告（3 张大卡片） ========== */
.hit-events-sec{background:#F5F6F8;padding:50px 0 60px}
.ev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.ev-it{display:block;background:#fff;border:1px solid #e6e8eb;padding:0 0 18px;transition:all .25s;border-top:3px solid #1A5F7A;position:relative}
.ev-it:hover{transform:translateY(-3px);box-shadow:0 6px 16px rgba(26,95,122,.15)}
.ev-it .ph{display:block;height:220px;overflow:hidden;background:linear-gradient(135deg,#1A5F7A,#0E3D52)}
.ev-it .ph img{width:100%;height:100%;object-fit:cover}
.ev-it .ph .placeholder{display:flex;align-items:center;justify-content:center;width:100%;height:100%;color:#fff;font-size:14px;padding:10px;text-align:center}
.ev-it .tt{display:block;font-size:18px;font-weight:600;color:#1A5F7A;padding:14px 18px 4px;line-height:1.4}
.ev-it .meta{display:block;font-size:13px;color:#666;padding:4px 18px;line-height:1.7}
.ev-it .meta svg{vertical-align:middle;margin-right:4px}

/* ========== 学术活动 / 人才培养 / 科学研究 / 校园生活 (4图横排) ========== */
.hit-row-sec,.hit-life-sec{background:#F5F6F8;padding:36px 0 42px}
.hit-life-sec{padding-bottom:60px}
.row-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:18px}
.rg-it{display:block;height:200px;overflow:hidden;background:linear-gradient(135deg,#1A5F7A,#0E3D52);position:relative;transition:transform .35s}
.rg-it:hover{transform:translateY(-3px)}
.rg-it img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.rg-it:hover img{transform:scale(1.05)}
.rg-it .placeholder{display:flex;align-items:center;justify-content:center;width:100%;height:100%;color:#fff;font-size:14px;padding:10px;text-align:center}

/* ========== Footer ========== */
.hit-footer{}
.ft-cols{background:#F5F6F8;padding:40px 0 36px;border-top:1px solid #e6e8eb}
.ft-cols-in{display:grid;grid-template-columns:1.4fr 1fr 1.4fr 1fr 1fr 1fr 1fr 1fr 1.6fr;gap:18px}
.ft-cols dl dt{font-size:15px;font-weight:600;color:#1A5F7A;margin-bottom:14px;padding-bottom:8px;border-bottom:1px solid #d8dde3}
.ft-cols dl dt.m-t{margin-top:16px}
.ft-cols dl dd{font-size:12px;line-height:1.95}
.ft-cols dl dd a{color:#666}
.ft-cols dl dd a:hover{color:#1A5F7A}
.ft-cols .select-wrap select{width:100%;padding:6px 10px;border:1px solid #d8dde3;background:#fff;font-size:13px;color:#666;outline:none}
.ft-cols .ft-campus{display:flex;flex-direction:column;gap:8px;margin-top:14px}
.ft-cols .ft-campus .cm{display:block;background:#1A5F7A;color:#fff;text-align:center;padding:10px 6px;border-radius:2px;font-size:12px}
.ft-cols .ft-campus .cm em{color:#fff}
.ft-cols .ft-campus .cm:hover{background:#0E3D52}

.ft-cr{background:#0E3D52;color:#cfd8dd;padding:20px 0}
.ft-cr-in{font-size:12px;line-height:1.95;text-align:center}
.ft-cr-in p{margin:3px 0}
.ft-cr-in a{color:#cfd8dd}
.ft-cr-in a:hover{color:#fff;text-decoration:underline}
.ft-cr-in .sep{margin:0 2px;opacity:.55}
.ft-flink{margin-top:12px;padding-top:12px;border-top:1px solid rgba(255,255,255,.1);text-align:center}
.ft-flink a{display:inline-block;padding:2px 12px;border-right:1px solid rgba(255,255,255,.15);font-size:12px;color:#cfd8dd}
.ft-flink a:last-child{border-right:0}
.ft-flink a:hover{color:#fff}

/* ========== 内页（列表/详情） ========== */
.hit-inner-body{background:#F5F6F8}
.hit-inner{padding:36px 0;background:#F5F6F8;min-height:520px}
.inner-wrap{display:grid;grid-template-columns:240px 1fr;gap:28px;align-items:start}
.in-side{background:#fff;border:1px solid #eaecf0;border-top:3px solid #1A5F7A}
.in-side .is-tt{background:#1A5F7A;color:#fff;padding:18px 20px;font-size:18px;font-weight:600}
.in-side .is-list li{border-bottom:1px solid #eef1f5}
.in-side .is-list li:last-child{border-bottom:0}
.in-side .is-list li a{display:block;padding:13px 22px;color:#333;font-size:14px;position:relative;transition:all .25s}
.in-side .is-list li a::before{content:'';position:absolute;left:10px;top:50%;width:4px;height:4px;background:#1A5F7A;border-radius:50%;transform:translateY(-50%);opacity:.5}
.in-side .is-list li a:hover,.in-side .is-list li.cur a{background:#F2F6F9;color:#1A5F7A;padding-left:26px}
.in-main{background:#fff;border:1px solid #eaecf0;padding:24px 30px;min-height:520px}
.in-bread{font-size:13px;color:#777;padding-bottom:14px;border-bottom:1px solid #eef1f5}
.in-bread a{color:#777}
.in-bread a:hover{color:#1A5F7A}
.in-tt{font-size:22px;color:#1A5F7A;font-weight:600;margin:20px 0 16px;padding-bottom:14px;border-bottom:2px solid #1A5F7A;display:inline-block}
.in-list{margin-top:8px}
.in-list li{display:flex;align-items:center;justify-content:space-between;padding:13px 4px 13px 18px;border-bottom:1px dashed #e3e6ea;font-size:15px;position:relative}
.in-list li::before{content:'';position:absolute;left:0;top:50%;width:5px;height:5px;background:#1A5F7A;border-radius:50%;transform:translateY(-50%)}
.in-list li a{color:#333;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.in-list li a:hover{color:#1A5F7A}
.in-list li .d{color:#999;font-size:13px;margin-left:14px;flex-shrink:0}
.in-pagebar{margin-top:24px;text-align:center;font-size:13px;color:#888;padding-top:14px;border-top:1px solid #eef1f5}
.in-pagebar a,.in-pagebar span{display:inline-block;padding:4px 12px;border:1px solid #e1e4e8;margin:0 3px;color:#555;background:#fff;border-radius:2px}
.in-pagebar a:hover,.in-pagebar .pageinfo,.in-pagebar .thisclass{background:#1A5F7A;color:#fff;border-color:#1A5F7A}

/* 详情页 */
.in-art h1{font-size:24px;color:#222;text-align:center;margin:14px 0 12px;line-height:1.4}
.in-art .meta{text-align:center;font-size:13px;color:#888;padding:10px 0;border-bottom:1px dashed #eef1f5;margin-bottom:24px}
.in-art .body{font-size:15px;line-height:1.95;color:#333;padding:10px 0 24px}
.in-art .body p{margin:14px 0}
.in-art .body img{max-width:100%;height:auto;display:block;margin:14px auto}

/* ========== 兜底 placeholder ========== */
.placeholder{display:flex;align-items:center;justify-content:center;width:100%;height:100%;color:#fff;background:linear-gradient(135deg,#1A5F7A,#0E3D52);text-align:center;padding:10px;font-size:14px}