/* ============================================================
   高校二级学院网站 公共样式
   风格：学术蓝 / 扁平卡片 / 适配设计稿
   ============================================================ */
:root{
  /* 主色：深海蓝 */
  --primary:#0e3a78;          /* 主蓝 · 深海 */
  --primary-deep:#082c5c;     /* 深蓝 */
  --primary-dark:#061d3e;     /* 极深 */
  --accent:#e53e3e;           /* 旧点缀红 */
  --crimson:#7a1f2b;          /* 学院红 · 牛津/哈佛系 */

  /* 文字与中性 */
  --text:#2a2e35;             /* 主文字 */
  --text-2:#5b6473;
  --text-3:#8a93a5;
  --line:#e6e8ee;
  --bg:#f5f7fb;
  --ivory:#f6f2ea;            /* 哑光象牙，替代 cream */

  /* 学术金属色：古铜金 */
  --gold:#b08755;
  --gold-soft:#d4b585;

  /* 阴影与圆角 */
  --shadow:0 12px 60px rgba(8,44,92,.08);
  --shadow-lg:0 24px 80px rgba(8,44,92,.12);
  --radius:2px;

  /* 字体三轨：衬线/ 无衬线/ 等宽 */
  --font-serif:"Source Han Serif SC","Noto Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-sans:"Inter","Helvetica Neue","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","SF Mono",ui-monospace,Menlo,monospace;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{font-size:14px;}
body{
  font-family:var(--font-sans);
  color:var(--text);
  background:#fff;
  line-height:1.8;
  font-feature-settings:"tnum" 1,"kern" 1;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
a{color:inherit;text-decoration:none;transition:all .25s ease;}
ul,ol{list-style:none;}
img{display:block;max-width:100%;}
.container{width:1300px;margin:0 auto;}
.clearfix::after{content:"";display:block;clear:both;}

/* ================= CMS 兼容层 =================
   CMS循环输出的 <div frag="窗口XX"> 包裹层默认 display:block，
   会插在 flex 容器与 flex 子项之间，导致 .feat-item 等子项的 flex 属性失效。
   display:contents 让包裹层自身不生成盒子，其子元素直接参与父级布局。 */
[frag]{display:contents;}

/* 顶部工具条 */
.topbar{
  background:var(--primary-dark);height:42px;
  font-size:13px;color:rgba(255,255,255,.7);
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:42px;}
.topbar-right{display:flex;align-items:center;gap:20px;}
.top-search{display:flex;}
.top-search input{
  width:200px;height:28px;padding:0 12px;
  border:1px solid rgba(255,255,255,.28);border-right:none;
  border-radius:3px 0 0 3px;
  font-size:13px;outline:none;color:#fff;
  background:rgba(255,255,255,.16);
  transition:background .25s;
}
.top-search input::placeholder{color:rgba(255,255,255,.55);}
.top-search input:focus{background:rgba(255,255,255,.26);box-shadow:inset 0 0 0 1px var(--gold-soft);}
.top-search button{
  height:28px;padding:0 16px;border:1px solid rgba(255,255,255,.28);
  border-radius:0 3px 3px 0;
  background:rgba(255,255,255,.22);color:#fff;font-size:13px;cursor:pointer;
  transition:background .25s;
}
.top-search button:hover{background:rgba(255,255,255,.34);}
.top-lang{display:flex;align-items:center;}
.top-lang a{color:rgba(255,255,255,.7);padding:2px 6px;}
.top-lang a:hover{color:#fff;}
.top-lang a.on{color:#fff;font-weight:700;}
.top-lang span{opacity:.35;}

/* 页头 */
.site-header{
  background:linear-gradient(90deg,var(--primary-deep) 0%,var(--primary) 60%,#2f74d6 100%);
  height:92px;
  position:relative;
  z-index:100;
}
/* 首页：页头透明，直接叠加在 banner 图上 */
.is-home .site-header{
  position:absolute;top:42px;left:0;right:0;
  background:transparent;
}
/* 首页：一级菜单加文字阴影，banner 图上更醒目 */
.is-home .main-nav > ul > li > a{
  color:#fff;
  text-shadow:0 1px 4px rgba(0,0,0,.55),0 2px 14px rgba(0,0,0,.35);
}
.is-home .brand{
  text-shadow:0 1px 4px rgba(0,0,0,.55),0 2px 14px rgba(0,0,0,.35);
}
.site-header .container{
  height:92px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.brand{display:flex;align-items:center;color:#fff;}
.brand .logo-badge{
  width:52px;height:52px;border-radius:50%;
  border:2px dashed rgba(255,255,255,.7);
  display:flex;align-items:center;justify-content:center;
  font-size:22px;font-weight:700;margin-right:14px;
  background:rgba(255,255,255,.12);
}
.brand .brand-name{font-size:22px;font-weight:700;letter-spacing:2px;}
.brand .brand-sub{
  margin-left:12px;padding-left:12px;
  border-left:1px solid rgba(255,255,255,.4);
  font-size:15px;letter-spacing:1px;opacity:.9;
}
/* logo 图片 */
.brand .logo-img{height:64px;width:auto;display:block;}
.footer-brand .logo-img{height:60px;width:auto;display:block;}

/* 主导航 */
.header-right{display:flex;align-items:center;}
.main-nav > ul{display:flex;}
.main-nav li{position:relative;}
.main-nav a{
  display:block;
  padding:0 14px;
  height:92px;line-height:92px;
  color:#e7eefb;font-size:17px;font-weight:700;letter-spacing:.5px;
}
.main-nav li:hover > a,
.main-nav li.active > a{
  background:rgba(255,255,255,.14);
  color:#fff;
}
.main-nav li.active > a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:14px;
  height:3px;background:#fff;border-radius:2px;
}
/* 二级下拉菜单 */
.sub-menu{
  display:block;padding:6px 0;
  position:absolute;top:92px;left:0;min-width:150px;
  background:#fff;border-radius:0 0 6px 6px;
  box-shadow:0 12px 32px rgba(12,47,107,.18);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:all .25s ease;z-index:200;
}
.sub-menu li{display:block;width:100%;}
.main-nav li:hover .sub-menu{opacity:1;visibility:visible;transform:none;}
.sub-menu li a{
  display:block;height:auto;line-height:1.6;
  padding:12px 22px;font-size:14px;color:#444;letter-spacing:0;
  white-space:nowrap;border-bottom:1px solid #f0f2f8;
}
.sub-menu li:last-child a{border-bottom:none;}
.sub-menu li a:hover{
  background:#f2f6fd;color:var(--primary);padding-left:30px;
}

/* 首页横幅轮播 */
.banner{position:relative;height:676px;overflow:hidden;}
.banner .slide{
  position:absolute;inset:0;opacity:0;display:block;
  transition:opacity 1s ease;
  background-size:cover;background-position:center;
}
.banner .slide.on{opacity:1;z-index:1;}
.banner .slide::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,47,107,.15) 0%,rgba(12,47,107,.05) 40%,rgba(12,47,107,.62) 100%);
}
/* 轮播标题区 */
.slide-caption{
  position:absolute;left:50%;transform:translateX(-50%);
  bottom:72px;z-index:2;color:#fff;
}
.slide-caption .caption-tag{
  display:inline-block;padding:4px 14px;margin-bottom:14px;
  background:var(--accent);color:#fff;
  font-size:13px;letter-spacing:2px;border-radius:3px;
}
.slide-caption h2{
  font-family:var(--font-serif);
  font-size:42px;line-height:1.25;letter-spacing:0.02em;
  font-weight:600;
  max-width:820px;margin-bottom:14px;
  text-shadow:0 2px 16px rgba(0,0,0,.35);
  /* 入场动画 */
  opacity:0;transform:translateY(24px);
  transition:opacity .7s ease .3s,transform .7s ease .3s;
}
.slide-caption p{
  font-size:15px;line-height:1.85;opacity:.92;max-width:640px;
  letter-spacing:0.04em;
  text-shadow:0 1px 8px rgba(0,0,0,.4);
  opacity:0;transform:translateY(24px);
  transition:opacity .7s ease .5s,transform .7s ease .5s;
}
.banner .slide.on .slide-caption h2,
.banner .slide.on .slide-caption p{
  opacity:1;transform:translateY(0);
}
.banner .slide:hover .slide-caption h2{text-decoration:underline;}
.banner .dots{
  position:absolute;left:50%;bottom:24px;transform:translateX(-50%);
  display:flex;gap:10px;z-index:5;
}
.banner .dots i{
  width:28px;height:4px;border-radius:2px;
  background:rgba(255,255,255,.5);cursor:pointer;transition:.3s;
}
.banner .dots i.on{background:var(--gold);width:44px;}

/* 区块标题全站统一 */
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  margin-bottom:34px;
}
.sec-title{display:flex;align-items:baseline;gap:14px;}
.sec-title h2{
  font-family:var(--font-serif);
  font-size:34px;color:var(--text);letter-spacing:0.06em;font-weight:600;
  line-height:1.2;
}
.sec-title span{
  color:#9aa3b2;font-size:11.5px;letter-spacing:0.3em;text-transform:uppercase;
  font-family:var(--font-sans);
}
.more-link{
  color:var(--text-3);font-size:14px;
  padding:6px 18px;border:1px solid var(--line);border-radius:20px;
}
.more-link:hover{background:var(--primary);color:#fff;border-color:var(--primary);}

/* 学院新闻 + 通知公告 */
.section{padding:70px 0;}
.news-wrap{display:flex;gap:40px;align-items:stretch;}
.news-main{
  flex:1;min-width:0;
  display:flex;flex-direction:column;justify-content:space-between;
}
.news-item{
  display:flex;gap:22px;padding:14px 0;align-items:stretch;
}
.news-item:first-child{padding-top:0;}
.news-item:last-child{padding-bottom:0;}
.news-thumb{
  width:216px;height:146px;flex:none;border-radius:0;
  overflow:hidden;background:linear-gradient(135deg,#c9d8f0,#9db9e6);
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.news-item:hover .news-thumb img{transform:scale(1.08);}
.news-info{
  flex:1;min-width:0;height:146px;overflow:hidden;
  background:#f2f4f8;padding:0 26px;
  display:flex;flex-direction:column;justify-content:center;
  transition:background .3s ease;
}
.news-item:hover .news-info{background:#eaeff7;}
.news-info .date{
  color:var(--primary);font-size:14px;margin-bottom:8px;
  display:flex;align-items:center;gap:14px;
}
.news-info .date::after{content:"";flex:1;height:1px;background:#c9d4e6;}
.news-info h3{
  font-size:18px;color:var(--text);margin-bottom:8px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  display:flex;align-items:center;gap:10px;
}
.news-info h3 .tag{
  flex:none;font-size:12px;line-height:1;
  padding:4px 8px;border-radius:2px;font-weight:500;
  background:var(--gold);color:var(--primary-dark);
  letter-spacing:1px;
}
.news-info h3 a{overflow:hidden;text-overflow:ellipsis;flex:1;min-width:0;}
.news-item:hover .news-info h3{color:var(--primary);}
.news-info p{
  color:var(--text-2);font-size:14px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}

/* 通知公告蓝卡 */
.notice-card{
  width:380px;flex:none;
  background:linear-gradient(160deg,var(--primary) 0%,var(--primary-deep) 100%);
  border-radius:var(--radius);color:#fff;padding:34px 32px;
  box-shadow:var(--shadow);
}
.notice-card h3{
  font-size:22px;letter-spacing:2px;margin-bottom:8px;
  display:flex;align-items:baseline;gap:10px;
}
.notice-card h3 small{font-size:13px;font-weight:400;opacity:.7;font-style:italic;}
.notice-card ul li{
  display:flex;gap:16px;padding:14px 0;
  border-bottom:1px solid rgba(255,255,255,.18);
}
.notice-card .n-date{flex:none;text-align:center;width:52px;}
.notice-card .n-date b{display:block;font-size:26px;line-height:1.1;color:var(--gold-soft);}
.notice-card .n-date span{font-size:12px;opacity:.75;}
.notice-card .n-title{
  font-size:14.5px;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.notice-card ul li:hover .n-title{text-decoration:underline;}
.notice-card .notice-more{
  display:inline-block;margin-top:22px;padding:8px 30px;
  border:1px solid rgba(255,255,255,.7);border-radius:3px;
  font-size:14px;letter-spacing:2px;
}
.notice-card .notice-more:hover{background:#fff;color:var(--primary);}

/* 学生活动 */
.activity-sec{
  background:linear-gradient(180deg,#faf6ef 0%,#f3ecdd 100%);
  padding:70px 0 80px;
  position:relative;overflow:hidden;
}
.activity-sec::before{
  content:"";position:absolute;left:-140px;top:-140px;
  width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,162,74,.10),transparent 70%);
}
.activity-sec::after{
  content:"";position:absolute;right:-160px;bottom:-160px;
  width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,162,74,.07),transparent 70%);
}
.activity-sec .container{position:relative;z-index:1;}
.act-top{
  display:flex;align-items:flex-end;justify-content:space-between;
  margin-bottom:36px;
}
.act-title h2{
  font-family:var(--font-serif);
  font-size:34px;color:var(--text);font-weight:600;letter-spacing:0.06em;line-height:1.2;
}
.act-title span{
  display:block;margin-top:8px;
  color:#9aa3b2;font-size:11.5px;letter-spacing:0.3em;
  font-family:var(--font-sans);text-transform:uppercase;
}
.act-title span::after{
  content:"";display:inline-block;vertical-align:middle;
  width:44px;height:1px;background:#c9d2e0;margin-left:12px;
}
.act-more{
  font-size:14px;letter-spacing:1px;color:var(--text-2);font-weight:600;
}
.act-more:hover{color:var(--primary);}
.act-body{display:flex;gap:64px;align-items:flex-start;}

/* 左列：焦点 + 列表 */
.act-left{flex:1;min-width:0;padding-top:6px;}
.act-featured{margin-bottom:26px;}
.act-featured h3{
  font-size:18px;margin-bottom:12px;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.act-featured h3 a{color:var(--primary);font-weight:700;}
.act-featured h3 a:hover{text-decoration:underline;}
.act-featured p{
  color:var(--text-3);font-size:13.5px;line-height:1.9;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.act-list li{
  display:flex;justify-content:space-between;align-items:center;gap:20px;
  padding:17px 0;border-bottom:1px solid #edf0f6;
}
.act-list li a{
  font-size:15px;color:var(--text);font-weight:600;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.act-list li a:hover{color:var(--primary);}
/* 与右侧轮播联动的当前条目高亮 */
.act-list li.cur a{color:var(--primary);}
.act-list li.cur{position:relative;}
.act-list li.cur::before{
  content:"";position:absolute;left:-14px;top:50%;transform:translateY(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--primary);
}
.act-list li span{flex:none;color:var(--text-3);font-size:13px;}

/* 右列：图片轮播 */
.act-right{width:520px;flex:none;}
.act-carousel{
  position:relative;height:340px;z-index:1;
}
.act-carousel::after{
  content:"";position:absolute;right:-22px;bottom:-22px;
  width:150px;height:150px;background:var(--primary-dark);z-index:-1;
}
.act-slide{
  position:absolute;inset:0;opacity:0;
  background-size:cover;background-position:center;
  transition:opacity .8s ease;
}
.act-slide.on{opacity:1;}
.act-controls{
  display:flex;align-items:center;justify-content:center;gap:14px;
  margin-top:34px;
}
.act-controls .act-prev,
.act-controls .act-next{
  cursor:pointer;color:var(--text-3);font-size:16px;padding:4px 6px;
  transition:color .25s;user-select:none;
}
.act-controls .act-prev:hover,
.act-controls .act-next:hover{color:var(--primary);}
.act-dots{display:flex;gap:10px;}
.act-dots i{
  width:9px;height:9px;border-radius:50%;
  border:1.5px solid #b9c4d6;background:transparent;
  cursor:pointer;transition:.25s;
}
.act-dots i.on{background:var(--gold);border-color:var(--gold);}

/* 学生风采 */
.feat-sec{background:linear-gradient(180deg,#f8f6f1 0%,#f1ede5 100%);padding:70px 0 84px;}
.feat-top{position:relative;text-align:center;margin-bottom:46px;}
.feat-top h2{
  font-family:var(--font-serif);
  font-size:34px;font-weight:600;letter-spacing:0.06em;color:var(--text);
}
.feat-sub{
  display:flex;align-items:center;justify-content:center;gap:16px;
  margin-top:12px;color:#9aa3b2;font-size:11.5px;letter-spacing:0.3em;
  font-family:var(--font-sans);text-transform:uppercase;
}
.feat-sub i{display:block;width:44px;height:1px;background:#c9d2e0;}
.feat-more{position:absolute;right:0;top:12px;}

.feat-wrap{position:relative;padding:0 58px;}
.feat-viewport{overflow:hidden;}
.feat-track{display:flex;transition:transform .5s ease;}
.feat-item{flex:0 0 25%;padding:0 13px;min-width:0;}
.feat-card{
  display:block;padding:14px 14px 24px;
  transition:all .3s ease;cursor:pointer;
}
.feat-photo{
  height:290px;background-size:cover;background-position:center top;
  background-color:#e4eaf4;
}
.feat-body{
  padding-top:16px;
  border-bottom:2px solid var(--gold);
  padding-bottom:14px;margin-bottom:12px;
}
.feat-body h4{
  font-family:var(--font-serif);
  font-size:19px;color:var(--text);margin-bottom:10px;
  font-weight:600;letter-spacing:0.04em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.feat-body h4 span{
  margin-left:10px;padding:2px 8px;
  font-size:12px;font-weight:400;color:var(--text-3);
  border:1px solid #dfe4ee;border-radius:3px;
  vertical-align:2px;
}
.feat-body p{
  font-size:13px;color:#8a93a5;line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
/* 悬停：整卡变蓝 */
.feat-card:hover{background:var(--primary);}
.feat-card:hover .feat-body{border-bottom-color:rgba(255,255,255,.35);}
.feat-card:hover .feat-body h4{color:#fff;}
.feat-card:hover .feat-body h4 span{color:rgba(255,255,255,.85);border-color:rgba(255,255,255,.5);}
.feat-card:hover .feat-body p{color:rgba(255,255,255,.85);}

/* 左右圆形箭头 */
.feat-prev,.feat-next{
  position:absolute;top:34%;z-index:5;
  width:42px;height:42px;border-radius:50%;
  background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;cursor:pointer;transition:background .25s;
  user-select:none;
}
.feat-prev{left:0;}
.feat-next{right:0;}
.feat-prev:hover,.feat-next:hover{background:var(--primary-deep);}

/* 页脚 */
.site-footer{
  background:
    linear-gradient(180deg,rgba(32,39,74,.82) 0%,rgba(26,31,58,.90) 60%,rgba(23,27,49,.95) 100%),
    url("../images/othertitle.jpg") center/cover no-repeat;
  color:rgba(255,255,255,.85);padding:56px 0 0;
  background-attachment:scroll,scroll;
  background-color:#1a1f3a;
}
.footer-grid{display:flex;justify-content:space-between;gap:40px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;}
.footer-brand .logo-badge{
  width:56px;height:56px;border-radius:50%;
  border:2px dashed rgba(255,255,255,.6);
  display:flex;align-items:center;justify-content:center;
  font-size:24px;font-weight:700;margin-right:16px;background:rgba(255,255,255,.1);
}
.footer-brand .fb-name{font-size:20px;font-weight:700;color:#fff;letter-spacing:2px;}
.footer-brand .fb-sub{font-size:13px;opacity:.7;margin-top:4px;letter-spacing:1px;}
.footer-col h4{
  color:#fff;font-size:16px;margin-bottom:16px;letter-spacing:1px;position:relative;padding-bottom:8px;
}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:28px;height:2px;background:#fff;}
.footer-col li{font-size:13.5px;padding:4px 0;opacity:.85;}
.footer-col li a:hover{color:#fff;text-decoration:underline;}
.footer-social{display:flex;gap:12px;margin-top:14px;}
.footer-social a{
  width:38px;height:38px;border-radius:50%;
  border:1px solid rgba(255,255,255,.4);
  display:flex;align-items:center;justify-content:center;font-size:15px;
}
.footer-social a:hover{background:#fff;color:var(--primary);}
/* 友情链接下拉 */
.footer-links select{
  display:block;width:216px;margin-bottom:10px;
  padding:8px 12px;font-size:13.5px;color:#fff;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.3);border-radius:4px;
  outline:none;cursor:pointer;transition:background .25s;
}
.footer-links select:hover{background:rgba(255,255,255,.18);}
.footer-links select option{color:#333;background:#fff;}
.copyright{
  border-top:1px solid rgba(255,255,255,.18);
  text-align:center;padding:18px 0;font-size:13px;opacity:.7;
}

/* 内页公共 */
.inner-banner{
  height:320px;background-size:cover;background-position:center;
  position:relative;display:flex;align-items:center;
}
.inner-banner::before{
  content:"";position:absolute;inset:0;
  background:url("../images/columnbg.jpg") center/cover no-repeat;
  background-color:#102a5a;
}
.inner-banner .container{position:relative;z-index:2;color:#fff;}
.inner-banner h1{
  font-family:var(--font-serif);
  font-size:42px;letter-spacing:0.08em;margin-bottom:10px;font-weight:600;
}
.inner-banner .en{font-size:14px;letter-spacing:2px;opacity:.75;font-style:italic;}
.breadcrumb{
  background:var(--bg);border-bottom:1px solid var(--line);
  font-size:13.5px;color:var(--text-2);padding:14px 0;
}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{margin:0 8px;color:var(--text-3);}

.page-main{padding:56px 0 80px;}
.page-layout{display:flex;gap:44px;}

/* 左侧栏目导航 */
.side-nav{width:264px;flex:none;}
.side-nav .sn-head{
  background:linear-gradient(135deg,#7a1f2b,#5c151e);
  color:#fff;padding:22px 26px;border-radius:var(--radius) var(--radius) 0 0;
}
.side-nav .sn-head h3{font-size:19px;letter-spacing:2px;color:#fff;}
.side-nav .sn-head span{font-size:12px;opacity:.75;font-style:italic;letter-spacing:1px;color:#fff;}
.side-nav ul{
  border:1px solid var(--line);border-top:none;border-radius:0 0 var(--radius) var(--radius);
  overflow:hidden;
}
.side-nav ul a{
  display:flex;justify-content:space-between;align-items:center;
  padding:15px 24px;font-size:15px;border-bottom:1px solid var(--line);
}
.side-nav ul li:last-child a{border-bottom:none;}
.side-nav ul a::after{content:"›";color:var(--text-3);transition:.25s;}
.side-nav ul li:hover a,
.side-nav ul li.active a{
  background:#f5e5e7;color:#7a1f2b;
}
.side-nav ul li:hover a::after,
.side-nav ul li.active a::after{color:#7a1f2b;transform:translateX(4px);}

/* 右侧内容区 */
.page-content{flex:1;min-width:0;}
.pc-head{
  display:flex;justify-content:space-between;align-items:center;
  border-bottom:2px solid var(--primary);margin-bottom:8px;
}
.pc-head h2{
  font-size:22px;color:var(--primary-deep);letter-spacing:2px;
  padding-bottom:12px;border-bottom:3px solid var(--primary);margin-bottom:-2px;
}

/* 列表页 */
.art-list li{
  display:flex;gap:24px;align-items:center;
  padding:22px 6px;border-bottom:1px dashed var(--line);
  transition:background .25s;
}
.art-list li:hover{background:#f7f7f7;}
.art-date{
  flex:none;width:72px;text-align:center;
  border-right:1px solid var(--line);padding-right:20px;
}
.art-date b{display:block;font-size:30px;color:var(--text);line-height:1.15;}
.art-date span{font-size:12.5px;color:var(--text-3);}
.art-info{flex:1;min-width:0;}
.art-info h3{
  font-size:17px;margin-bottom:6px;color:var(--text);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.art-list li:hover .art-info h3{color:var(--text);}
.art-info p{
  color:var(--text-2);font-size:13.5px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}

/* 分页 */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:44px;}
.pagination a{
  min-width:38px;height:38px;padding:0 12px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:4px;font-size:14px;color:var(--text-2);
}
.pagination a:hover,
.pagination a.on{
  background:var(--primary);border-color:var(--primary);color:#fff;
}

/* 详情页 */
.article-head{text-align:center;padding-bottom:26px;border-bottom:1px solid var(--line);margin-bottom:30px;}
.article-head h1{font-size:26px;color:var(--text);line-height:1.5;margin-bottom:14px;}
.article-meta{color:var(--text-3);font-size:13.5px;}
.article-meta span{margin:0 14px;}
.article-body{font-size:15.5px;color:#444;line-height:2;}
.article-body p{margin-bottom:20px;text-indent:2em;}
.article-body .img-box{margin:26px 0;text-align:center;}
.article-body .img-box img{margin:0 auto;border-radius:var(--radius);}
.article-body .img-box span{display:block;font-size:13px;color:var(--text-3);margin-top:10px;}
.article-nav{
  margin-top:44px;border-top:1px solid var(--line);padding-top:18px;
  font-size:14.5px;
}
.article-nav li{padding:8px 0;color:var(--text-2);}
.article-nav a:hover{color:var(--primary);}
.article-nav .lbl{color:var(--text-3);margin-right:8px;}

/* 汉堡菜单按钮 */
.nav-toggle{
  display:none;width:40px;height:40px;margin-left:12px;flex:none;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  cursor:pointer;border:1px solid rgba(255,255,255,.4);border-radius:4px;
}
.nav-toggle i{width:20px;height:2px;background:#fff;display:block;transition:.3s;}
.nav-toggle.on i:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.on i:nth-child(2){opacity:0;}
.nav-toggle.on i:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* 响应式 */
@media (max-width:1340px){
  .container{width:96%;}
}
@media (max-width:992px){
  /* 顶部工具条：隐藏欢迎语，搜索自适应 */
  .topbar-left{display:none;}
  .topbar-right{width:100%;justify-content:space-between;gap:12px;}
  .top-search{flex:1;display:flex;}
  .top-search input{flex:1;width:auto;min-width:0;}
  .top-search button{padding:0 12px;}

  /* 页头：压缩高度，启用汉堡菜单 */
  .site-header{height:64px;}
  .site-header .container{height:64px;}
  .is-home .site-header{top:42px;}
  .brand .logo-badge{width:40px;height:40px;font-size:18px;margin-right:10px;}
  .brand .logo-img{height:34px;}
  .brand .brand-name{font-size:17px;letter-spacing:1px;}
  .brand .brand-sub{font-size:12px;margin-left:8px;padding-left:8px;}
  .nav-toggle{display:flex;}

  /* 主导航：移动端纵向抽屉 */
  .main-nav{
    display:none;position:absolute;top:64px;left:0;right:0;z-index:300;
    background:var(--primary-deep);
    max-height:calc(100vh - 106px);overflow-y:auto;
    box-shadow:0 16px 32px rgba(12,47,107,.35);
  }
  .main-nav.open{display:block;}
  .main-nav > ul{flex-direction:column;}
  .main-nav a{
    height:auto;line-height:1.6;padding:14px 20px;font-size:16px;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .main-nav li:hover > a{background:rgba(255,255,255,.08);}
  .main-nav li.active > a::after{display:none;}
  .main-nav li.active > a{background:rgba(255,255,255,.14);}
  /* 有子菜单的栏目加展开箭头 */
  .main-nav li:has(.sub-menu) > a::after{
    content:"";position:absolute;right:20px;top:22px;
    width:8px;height:8px;border-right:2px solid rgba(255,255,255,.7);
    border-bottom:2px solid rgba(255,255,255,.7);
    transform:rotate(45deg);transition:transform .25s;
  }
  .main-nav li.sub-open > a::after{transform:rotate(-135deg);}
  /* 二级菜单：移动端改为静态纵向展开 */
  .sub-menu{
    position:static;opacity:1;visibility:visible;transform:none;
    display:none;background:rgba(0,0,0,.2);border-radius:0;box-shadow:none;
    padding:0;min-width:0;
  }
  .main-nav li:hover .sub-menu{opacity:1;visibility:visible;transform:none;}
  .main-nav li.sub-open .sub-menu{display:block;}
  .sub-menu li a{
    color:rgba(255,255,255,.85);padding:12px 20px 12px 36px;
    font-size:14.5px;border-bottom:none;background:transparent;
  }
  .sub-menu li a:hover{
    background:rgba(255,255,255,.08);color:#fff;padding-left:36px;
  }

  .news-wrap,.page-layout{flex-direction:column;}
  .notice-card,.side-nav{width:100%;}
  .act-body{flex-direction:column;gap:36px;}
  .act-right{width:100%;}
  .act-carousel{height:300px;}
  .feat-item{flex-basis:50%;}
  .feat-photo{height:240px;}
  .feat-wrap{padding:0 46px;}
  .banner{height:468px;}
  .slide-caption{bottom:48px;}
  .slide-caption h2{font-size:22px;}
  .slide-caption p{font-size:13.5px;}

  /* 页脚：纵向堆叠 */
  .footer-grid{flex-direction:column;gap:30px;padding-bottom:36px;}
  .footer-links select{width:100%;max-width:340px;}
}

/* 大事记：竖向时间轴 */
.tl{position:relative;padding-left:36px;margin-top:26px;}
.tl::before{
  content:"";position:absolute;left:11px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--primary) 0%,#c9d8f0 80%,transparent 100%);
}
/* 时期标题节点 */
.tl-era{position:relative;margin:36px 0 20px;}
.tl-era:first-child{margin-top:0;}
.tl-era::before{
  content:"";position:absolute;left:-36px;top:3px;
  width:16px;height:16px;border-radius:50%;
  background:#fff;border:4px solid var(--gold);
  box-shadow:0 0 0 2px var(--gold-soft);
}
.tl-era h3{
  font-family:var(--font-serif);
  font-size:22px;color:var(--primary-deep);letter-spacing:0.06em;font-weight:600;
}
.tl-era h3 small{
  margin-left:12px;font-size:13px;font-weight:400;color:var(--text-3);
  letter-spacing:1px;
}
/* 事件卡片 */
.tl-item{
  position:relative;background:#fff;
  border:1px solid var(--line);border-radius:6px;
  padding:18px 24px;margin-bottom:16px;
  transition:all .3s ease;
  /* 滚动淡入初始状态 */
  opacity:0;transform:translateY(18px);
}
.tl-item.tl-show{opacity:1;transform:none;transition:opacity .6s ease,transform .6s ease,border-color .3s,box-shadow .3s;}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:26px;
  width:10px;height:10px;border-radius:50%;
  background:#fff;border:3px solid var(--primary);
}
.tl-item::after{
  content:"";position:absolute;left:-18px;top:30px;
  width:18px;height:2px;background:#c9d8f0;
}
.tl-item:hover{border-color:var(--primary);box-shadow:var(--shadow);}
.tl-year{
  display:inline-block;margin-bottom:6px;
  font-size:16px;font-weight:700;color:var(--primary);letter-spacing:1px;
}
.tl-item p{color:#555;font-size:14.5px;line-height:1.9;}
/* 注释条 */
.tl-note{
  position:relative;margin:4px 0 10px;padding:14px 20px;
  background:#f8faff;border-left:4px solid var(--accent);
  border-radius:0 6px 6px 0;
  color:var(--text-2);font-size:13.5px;
}
/* 学院定位高亮卡 */
.tl-position{
  position:relative;margin-top:36px;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-deep) 100%);
  color:#fff;border-radius:6px;padding:30px 32px;
  box-shadow:var(--shadow);
}
.tl-position::before{
  content:"";position:absolute;left:-30px;top:36px;
  width:10px;height:10px;border-radius:50%;
  background:#fff;border:3px solid var(--accent);
}
.tl-position h3{font-size:19px;letter-spacing:2px;margin-bottom:10px;}
.tl-position h3::after{
  content:"";display:block;width:40px;height:3px;background:var(--accent);
  border-radius:2px;margin-top:8px;
}
.tl-position p{opacity:.92;font-size:14.5px;line-height:1.9;}

@media (max-width:640px){
  .tl{padding-left:28px;}
  .tl::before{left:8px;}
  .tl-era::before{left:-28px;width:13px;height:13px;border-width:3px;}
  .tl-item::before{left:-24px;}
  .tl-item::after{left:-14px;width:14px;}
  .tl-position::before{left:-24px;}
  .tl-era h3 small{display:block;margin-left:0;margin-top:4px;}
}


/* 手机端≤640px */
@media (max-width:640px){
  /* 学生风采：单列大卡 */
  .feat-item{flex-basis:100%;}
  .feat-photo{height:320px;}
  .feat-wrap{padding:0 40px;}
  .feat-prev,.feat-next{width:36px;height:36px;font-size:14px;}
  /* 页脚元素 */
  .footer-grid{text-align:left;}
  /* 新闻动态：上图下文卡片式 */
  .news-item{flex-direction:column;gap:0;}
  .news-thumb{width:100%;height:200px;}
  .news-info{height:auto;padding:18px 22px;}
  .news-info h3{white-space:normal;}
}