/* ==========================================================
 * vip3mb00341 - 仿中国农业大学官网 PC 端样式
 * 主绿 #2D7E3E / 中绿 #4FA15A / 浅绿 #A8C97C / 米白 #F7F4E9 / 金 #B89B5C
 * ========================================================== */
:root{
  --cau-green:#2D7E3E;
  --cau-green-2:#4FA15A;
  --cau-green-d:#1F5A2C;
  --cau-green-l:#A8C97C;
  --cau-cream:#F7F4E9;
  --cau-cream-2:#FFFCF1;
  --cau-gold:#B89B5C;
  --cau-ink:#2c2c2c;
  --cau-gray:#707070;
  --cau-gray-2:#bdbdbd;
  --cau-line:#e5e0d3;
  --cau-dark:#1a3220;
}
/* SEO/无障碍：视觉隐藏但屏读可访问 */
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
/* 主导航包裹层（取代之前与 ul 重名的 .cau-nav） */
.cau-navwrap{display:flex;align-items:center;min-width:0}
.cau-nav-l{justify-content:flex-end}
.cau-nav-r{justify-content:flex-start}
*,*:before,*:after{box-sizing:border-box}
html,body{margin:0;padding:0}
body.cau-body{
  font:14px/1.7 "Microsoft YaHei","PingFang SC","Hiragino Sans GB","Noto Sans CJK SC",Arial,sans-serif;
  color:var(--cau-ink);background:var(--cau-cream-2);-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(--cau-green)}
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}
.cau-wrap{max-width:1380px;margin:0 auto;padding:0 30px}

/* ===================== 顶部双色细条 ===================== */
.cau-topbar{background:var(--cau-green-d);color:#fff;font-size:13px;line-height:36px}
.cau-topbar-in{display:flex;align-items:center;justify-content:flex-end;height:36px;gap:0}
.cau-topbar a{color:#fff;opacity:.92;padding:0 10px}
.cau-topbar a:hover{color:#fff;opacity:1;text-decoration:underline}
.cau-topbar .sep{opacity:.4;margin:0 2px}
.cau-tb-grp{display:flex;align-items:center}
.cau-tb-grp strong{color:#ffd97a;font-weight:700;padding:0 10px;border-left:2px solid #ffd97a;margin-left:18px}
.cau-tb-grp:first-child strong{border-left:0;margin-left:0}
.cau-tb-search{margin-left:14px;display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;background:rgba(255,255,255,.12);color:#fff}
.cau-tb-search:hover{background:rgba(255,255,255,.25)}

/* ===================== 主导航：波浪绿底 + 居中logo ===================== */
.cau-mast{position:relative;z-index:50;background:linear-gradient(180deg,var(--cau-green) 0%,var(--cau-green-2) 100%);transition:box-shadow .25s}
.cau-mast.is-shadow{box-shadow:0 4px 18px rgba(0,0,0,.12)}
.cau-mast:after{
  content:"";display:block;position:absolute;left:0;right:0;bottom:-22px;height:24px;
  background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='1600' height='24' viewBox='0 0 1600 24' preserveAspectRatio='none'><path d='M0 0 L1600 0 L1600 4 Q1200 24 800 12 T0 4 Z' fill='%234FA15A'/></svg>") no-repeat center top/100% 100%;
  z-index:1;pointer-events:none;
}
.cau-mast-in{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:96px;gap:20px;position:relative;z-index:2}

.cau-nav{display:flex;align-items:center;gap:30px;flex-wrap:wrap}
.cau-nav-l{justify-content:flex-end;min-width:0}
.cau-nav-r{justify-content:flex-start;min-width:0}
.cau-nav>li{position:relative}
.cau-nav>li>a{display:inline-block;font-size:16px;color:#fff;padding:8px 0;font-weight:700;letter-spacing:1px}
.cau-nav>li>a:hover,.cau-nav>li.cur>a{color:#ffd97a}
.cau-nav>li>a:after{content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;background:#ffd97a;transition:left .3s,right .3s}
.cau-nav>li>a:hover:after,.cau-nav>li.cur>a:after{left:0;right:0}

.cau-logo{flex-shrink:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  width:300px;height:120px;
  background:linear-gradient(180deg,#fff 0%,#fcfaf2 70%,var(--cau-cream) 100%);
  border-radius:0 0 50% 50%/0 0 30px 30px;
  position:relative;top:-6px;padding:14px 18px 16px;
  box-shadow:0 4px 14px rgba(0,0,0,.15);
  text-align:center;
}
.cau-logo:before{content:"";position:absolute;left:-12px;right:-12px;top:0;height:8px;background:var(--cau-gold);border-radius:0 0 6px 6px;opacity:.85}
.cau-logo a{display:flex;flex-direction:column;align-items:center;gap:4px}
.cau-logo img{height:42px;width:auto}
.cau-lg-txt strong{font-size:22px;color:var(--cau-green-d);font-weight:700;letter-spacing:8px;font-family:"FangSong","STFangsong","Microsoft YaHei",serif;display:block}
.cau-lg-txt em{font-size:11px;color:var(--cau-green-d);letter-spacing:2px;font-style:normal;display:block;margin-top:2px}

.cau-tools{display:flex;align-items:center;gap:10px;flex-shrink:0}
.cau-tool{width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.18);color:#fff;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s}
.cau-tool:hover{background:#fff;color:var(--cau-green-d)}
.cau-burger{display:none;width:42px;height:42px;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.cau-burger span{display:block;width:22px;height:2px;background:#fff}

.cau-search-pop{position:absolute;right:30px;top:96px;background:#fff;padding:14px;box-shadow:0 8px 22px rgba(0,0,0,.12);border-radius:6px;z-index:60}
.cau-search-pop[hidden]{display:none}
.cau-search-pop input[type=text]{width:280px;height:36px;padding:0 12px;border:1px solid #ddd;border-radius:18px;font-size:14px;outline:none}
.cau-search-pop input[type=text]:focus{border-color:var(--cau-green)}
.cau-search-pop button[type=submit]{height:36px;padding:0 18px;background:var(--cau-green);color:#fff;border-radius:18px;margin-left:6px}

/* 抽屉 */
.cau-drawer{position:fixed;inset:0;background:rgba(0,0,0,.4);display:none;z-index:200}
.cau-drawer.on{display:block}
.cau-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)}}
.cau-drawer-close{position:absolute;right:12px;top:8px;width:32px;height:32px;font-size:24px;color:#999}
.cau-drawer h3{font-size:18px;color:var(--cau-green);margin-bottom:14px;border-bottom:2px solid var(--cau-green);padding-bottom:8px}
.cau-drawer ul li{padding:10px 0;border-bottom:1px dashed #eee}

/* ===================== 通用标题 ===================== */
.sec-tt{display:flex;align-items:flex-end;gap:12px;margin-bottom:30px;font-size:36px;color:var(--cau-ink);font-weight:700;letter-spacing:2px;line-height:1.2;position:relative}
.sec-tt small{font-size:14px;color:var(--cau-gray-2);font-weight:400;letter-spacing:4px;text-transform:uppercase;font-family:Georgia,serif;padding-bottom:4px}
.sec-tt:after{content:"";display:block;width:42px;height:3px;background:var(--cau-green);margin-left:6px;margin-bottom:8px}
.sec-tt-c{justify-content:center}
.sec-tt-c:after{display:none}
.sec-tt-c:before{content:"";display:block;width:42px;height:3px;background:var(--cau-green);margin-right:6px;margin-bottom:8px}

.cau-more{display:inline-flex;align-items:center;gap:6px;color:var(--cau-green);font-size:13px}
.cau-more i{display:inline-block;width:18px;height:18px;border-radius:50%;background:var(--cau-green);color:#fff;font-size:10px;font-style:normal;text-align:center;line-height:18px}
.cau-more:hover{color:var(--cau-green-d)}

/* ===================== Banner 轮播 ===================== */
.cau-banner{position:relative;height:580px;overflow:hidden;background:#7a060a;margin-top:24px}
.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:.6;mix-blend-mode:multiply}
.bn-overlay{position:absolute;inset:0;background:radial-gradient(ellipse at center,rgba(0,0,0,.05) 0%,rgba(0,0,0,.45) 100%)}
.bn-cap{position:absolute;left:0;right:0;top:42%;transform:translateY(-50%);text-align:center;z-index:3;padding:0 30px}
.bn-cap .bn-t{display:block;font-size:54px;font-weight:700;color:#ffd97a;letter-spacing:10px;text-shadow:0 4px 14px rgba(0,0,0,.4);font-family:"FangSong","STSong","SimSun",serif;line-height:1.4}
.bn-bar{display:block;width:80px;height:2px;background:#ffd97a;margin:24px auto;opacity:.7}
.bn-cap .bn-d{display:block;font-size:24px;color:#fff;letter-spacing:6px;font-weight:400;font-style:normal;font-family:"FangSong","STSong","SimSun",serif;opacity:.9}

.bn-arrow{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,.25);color:#fff;font-size:28px;line-height:1;z-index:5;backdrop-filter:blur(4px);transition:background .25s}
.bn-arrow:hover{background:rgba(255,255,255,.5)}
.bn-prev{left:30px}
.bn-next{right:30px}
.bn-pages{position:absolute;right:30px;bottom:30px;display:flex;align-items:center;gap:8px;z-index:5}
.bn-pages .pg{width:14px;height:14px;border-radius:50%;background:rgba(255,255,255,.4);padding:0;border:0;font-size:0;transition:all .3s}
.bn-pages .pg.on{background:#ffd97a;width:30px;border-radius:7px}
.bn-pages .pg-line{display:none}
.bn-pages .pg-next,.bn-pages .pg-pause{padding:6px 10px;background:rgba(255,255,255,.2);color:#fff;font-size:13px;border-radius:14px;margin-left:6px}
.bn-more-link{position:absolute;right:30px;bottom:90px;color:#fff;font-size:13px;z-index:5;letter-spacing:1px}
.bn-more-link:hover{color:#ffd97a}

/* ===================== 头条关注 HEADLINES ===================== */
.cau-news{padding:60px 0;background:var(--cau-cream-2);position:relative;background-image:radial-gradient(circle at 6% 50%,rgba(168,201,124,.15) 0,transparent 240px),radial-gradient(circle at 94% 80%,rgba(168,201,124,.18) 0,transparent 280px)}
.cau-news .sec-tt{justify-content:center;margin-bottom:34px}
.cau-news-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.cau-news-top .cau-more{font-size:13px}
.news-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:24px;align-items:flex-start}
.nws-big{position:relative;display:block;height:520px;overflow:hidden;border-radius:6px;background:#000}
.nws-big img{width:100%;height:100%;object-fit:cover;transition:transform .6s;opacity:.95}
.nws-big:hover img{transform:scale(1.04)}
.nws-big-cap{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(180deg,transparent,rgba(0,0,0,.7));color:#fff;padding:30px 24px 22px;font-size:18px;font-weight:600;line-height:1.5}
.nws-cards{display:flex;flex-direction:column;gap:16px}
.nws-card{background:#fff;padding:20px 22px;border-top:3px solid var(--cau-green);min-height:240px;display:flex;flex-direction:column;justify-content:flex-start;transition:all .25s;color:var(--cau-ink);box-shadow:0 1px 6px rgba(0,0,0,.04)}
.nws-card:hover{box-shadow:0 8px 22px rgba(45,126,62,.12);transform:translateY(-3px);color:var(--cau-green-d)}
.nws-card strong{font-size:17px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;color:var(--cau-ink);margin-bottom:12px}
.nws-card em{font-size:12px;font-style:normal;color:var(--cau-gray);margin-bottom:10px;letter-spacing:1px}
.nws-card p{font-size:13px;color:var(--cau-gray);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-top:auto}
.nws-img{position:relative;display:block;overflow:hidden;border-radius:6px;height:248px;background:#1a3220;color:#fff}
.nws-img img{width:100%;height:100%;object-fit:cover;opacity:.92;transition:transform .6s}
.nws-img:hover img{transform:scale(1.04)}
.nws-img-cap{position:absolute;left:18px;right:18px;bottom:14px;font-size:15px;font-weight:600;color:#fff;line-height:1.5}

/* ===================== 专题报道 HIGHLIGHTS ===================== */
.cau-topics{padding:70px 0;background:var(--cau-cream);position:relative;overflow:hidden}
.cau-topics:before{content:"";position:absolute;left:0;top:0;width:280px;height:100%;background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 600' fill='%23A8C97C' opacity='0.15'><path d='M40 100c10-20 30-30 50-20s20 30 10 50-30 30-50 20-20-30-10-50z'/><path d='M120 280c8-16 24-22 40-14s14 26 6 40-26 22-40 14-14-26-6-40z'/></svg>") no-repeat left center;opacity:.6;pointer-events:none}
.cau-topics .tp-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:30px}
.tp-stage{position:relative;height:480px;display:flex;align-items:center;justify-content:center;perspective:1600px}
.tp-card{position:absolute;width:560px;height:340px;border-radius:8px;overflow:hidden;box-shadow:0 14px 40px rgba(0,0,0,.18);transition:transform .55s,opacity .55s,filter .55s;cursor:pointer;background:#7a060a}
.tp-card img{width:100%;height:100%;object-fit:cover}
.tp-card .cap{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(180deg,transparent,rgba(0,0,0,.55));color:#fff;padding:24px 22px;font-size:16px;font-weight:600;letter-spacing:2px}
.tp-card[data-pos="-2"]{transform:translateX(-560px) scale(.7) rotateY(28deg);opacity:.55;filter:brightness(.8);z-index:1}
.tp-card[data-pos="-1"]{transform:translateX(-300px) scale(.85) rotateY(18deg);opacity:.85;z-index:2}
.tp-card[data-pos="0"]{transform:translateX(0) scale(1) rotateY(0);opacity:1;z-index:5}
.tp-card[data-pos="1"]{transform:translateX(300px) scale(.85) rotateY(-18deg);opacity:.85;z-index:2}
.tp-card[data-pos="2"]{transform:translateX(560px) scale(.7) rotateY(-28deg);opacity:.55;filter:brightness(.8);z-index:1}
.tp-card[data-pos="hide"]{transform:translateX(0) scale(.4);opacity:0;z-index:0}
.tp-arrow{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;border-radius:50%;background:#fff;color:var(--cau-green);font-size:22px;line-height:1;z-index:6;box-shadow:0 4px 12px rgba(0,0,0,.1)}
.tp-arrow:hover{background:var(--cau-green);color:#fff}
.tp-prev{left:8%}
.tp-next{right:8%}
.tp-bottom{margin-top:24px;text-align:center}
.tp-bottom strong{display:inline-block;padding:8px 28px;background:#fff;border:1px solid var(--cau-green-l);color:var(--cau-green-d);border-radius:18px;font-size:14px;font-weight:600;letter-spacing:2px}

/* ===================== 媒体农大 + 通知公告 ===================== */
.cau-notice{padding:70px 0;background:var(--cau-cream-2);position:relative;background-image:radial-gradient(circle at 4% 30%,rgba(168,201,124,.18) 0,transparent 320px)}
.nt-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.nt-col .nt-hd{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;border-bottom:1px solid #ddd6c6;padding-bottom:14px}
.nt-col .nt-hd .sec-tt{margin-bottom:0;font-size:32px}
.nt-col .nt-hd .sec-tt:after{margin-left:0;width:36px}
.nt-list{list-style:none;margin:0;padding:0;background:#fff;padding:18px 22px;border-radius:6px;min-height:540px;box-shadow:0 1px 6px rgba(0,0,0,.04)}
.nt-list li{padding:14px 0;border-bottom:1px dashed var(--cau-line);position:relative}
.nt-list li:last-child{border-bottom:0}
.nt-list li .src{display:block;font-size:13px;color:var(--cau-green);margin-bottom:6px;letter-spacing:1px;font-weight:600}
.nt-list li .src:before{content:"";display:inline-block;width:6px;height:6px;background:var(--cau-gold);border-radius:50%;margin-right:8px;vertical-align:middle}
.nt-list li .src .d{font-style:normal;color:var(--cau-gray);font-weight:400;margin-left:14px;font-size:12px}
.nt-list li a{display:block;font-size:15px;line-height:1.6;color:var(--cau-ink);font-weight:500;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.nt-list li a:hover{color:var(--cau-green)}

/* ===================== 科学研究 ===================== */
.cau-research{padding:70px 0;background:var(--cau-cream-2);position:relative}
.rs-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:flex-start}
.rs-left .sec-tt{margin-bottom:30px}
.rs-list .rs-it{display:block;padding:16px 18px;border-bottom:1px solid var(--cau-line);position:relative;color:var(--cau-ink);font-size:15px;line-height:1.6}
.rs-list .rs-it.feature{background:linear-gradient(90deg,var(--cau-green-l) 0%,#fcfdf5 100%);color:var(--cau-green-d);padding:18px 20px;border-bottom:0;font-weight:600;border-left:4px solid var(--cau-green);margin-bottom:8px}
.rs-list .rs-it:hover{color:var(--cau-green);padding-left:24px}
.rs-list .rs-it.feature:hover{padding-left:24px}
.rs-pic{position:relative;border-radius:6px;overflow:hidden;background:var(--cau-cream);min-height:480px}
.rs-pic img{width:100%;height:100%;min-height:480px;object-fit:cover;display:block}

/* ===================== 人物故事 STORY ===================== */
.cau-story{padding:0;background:var(--cau-cream-2)}
.cau-story .sty-bar{background:linear-gradient(90deg,var(--cau-green) 0%,var(--cau-green-2) 100%);padding:28px 0;color:#fff;position:relative}
.cau-story .sty-bar .cau-wrap{display:flex;align-items:center;justify-content:space-between}
.cau-story .sty-tt{display:flex;align-items:flex-end;gap:14px;color:#fff;font-size:32px;font-weight:700;letter-spacing:2px}
.cau-story .sty-tt small{font-size:13px;color:rgba(255,255,255,.85);font-weight:400;letter-spacing:4px;font-family:Georgia,serif;padding-bottom:4px}
.cau-story .sty-more{color:#fff;font-size:13px;display:inline-flex;align-items:center;gap:6px}
.sty-list{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.sty-it{position:relative;display:block;height:380px;overflow:hidden;border-left:4px solid var(--cau-green-2)}
.sty-it:first-child{border-left:0}
.sty-it img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.sty-it:hover img{transform:scale(1.05)}
.sty-cap{position:absolute;left:0;right:0;bottom:0;padding:18px 22px;background:linear-gradient(180deg,transparent,rgba(0,0,0,.7));color:#fff}
.sty-cap i{display:inline-block;width:6px;height:18px;background:var(--cau-green-2);vertical-align:middle;margin-right:10px}
.sty-cap strong{font-size:16px;font-weight:600;letter-spacing:1px;line-height:1.5;display:inline}
.sty-arrows{display:flex;justify-content:center;gap:30px;padding:24px 0;background:var(--cau-cream-2)}
.sty-arrows a{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:50%;border:1px solid var(--cau-green-l);color:var(--cau-green);font-size:20px;transition:all .25s}
.sty-arrows a:hover{background:var(--cau-green);color:#fff;border-color:var(--cau-green)}

/* ===================== 电子展厅 EXHIBITION ===================== */
.cau-exhibit{position:relative;padding:80px 0;background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='1600' height='460'><defs><linearGradient id='g' x1='0' y1='0' x2='0' y2='1'><stop offset='0%25' stop-color='%23f5e8c6'/><stop offset='100%25' stop-color='%23eed6a8'/></linearGradient></defs><rect width='1600' height='460' fill='url(%23g)'/></svg>") center/cover no-repeat;text-align:center;color:#7a3210;overflow:hidden}
.cau-exhibit .ex-cap-en{font-size:14px;letter-spacing:6px;color:#a06b1a;margin-bottom:14px;text-transform:uppercase}
.cau-exhibit h2{font-size:60px;font-weight:700;color:#7a3210;letter-spacing:20px;margin-bottom:18px;font-family:"FangSong","STSong","SimSun",serif;text-shadow:0 2px 4px rgba(255,240,200,.7)}
.cau-exhibit p{font-size:20px;color:#7a3210;letter-spacing:6px;margin-bottom:34px;font-family:"FangSong","STSong","SimSun",serif}
.cau-exhibit .ex-btns{display:inline-flex;gap:30px}
.cau-exhibit .ex-btn{display:inline-flex;align-items:center;gap:8px;padding:9px 28px;background:rgba(255,255,255,.7);border:1px solid #b89b5c;color:#7a3210;border-radius:18px;font-size:13px;letter-spacing:2px}
.cau-exhibit .ex-btn:hover{background:#fff}

/* ===================== 全媒体矩阵 OMNIMEDIA ===================== */
.cau-omn{padding:70px 0 30px;background:var(--cau-cream-2)}
.cau-omn .omn-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:24px}
.omn-soc{display:flex;align-items:center;gap:14px}
.omn-soc a{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:50%;color:#fff;font-size:14px;font-weight:600;letter-spacing:1px;transition:transform .25s}
.omn-soc a:hover{transform:translateY(-3px)}
.omn-soc .s1{background:#22ac38}
.omn-soc .s2{background:#e6162d}
.omn-soc .s3{background:#cd2922;font-family:"FangSong",serif}
.omn-soc .s4{background:#ff2742}
.omn-soc .s5{background:#1296db}
.omn-soc .arr{width:42px;height:42px;border:1px solid var(--cau-green-l);background:#fff;color:var(--cau-green);font-size:18px}
.omn-soc .arr:hover{background:var(--cau-green);color:#fff}

.omn-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.omn-grid a{position:relative;display:block;height:240px;overflow:hidden;background:#1a3220;border-radius:4px}
.omn-grid a img{width:100%;height:100%;object-fit:cover;transition:transform .6s;opacity:.95}
.omn-grid a:hover img{transform:scale(1.06)}
.omn-grid .lbl{position:absolute;left:10px;top:10px;width:22px;height:22px;background:#22ac38;color:#fff;border-radius:50%;font-size:0;display:flex;align-items:center;justify-content:center}
.omn-grid .lbl:after{content:"";display:block;width:10px;height:10px;background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23fff'><path d='M9 4a7 7 0 0 0-7 7c0 2 1 4 3 5l-1 3 3-2c.6.1 1.3.2 2 .2 4 0 7-3.1 7-7S13 4 9 4z'/></svg>") center/contain no-repeat}
.omn-grid .cap{position:absolute;left:10px;right:10px;bottom:10px;color:#fff;font-size:13px;line-height:1.4;text-shadow:0 1px 2px rgba(0,0,0,.5)}
.omn-grid .cap em{display:block;font-style:normal;font-size:11px;opacity:.85;margin-bottom:4px;color:#ffd97a}
.omn-grid .video{position:absolute;left:0;right:0;top:0;bottom:0;display:flex;align-items:center;justify-content:center;color:#fff;pointer-events:none}
.omn-grid .video:before{content:"";display:inline-block;width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,.4);box-shadow:inset 0 0 0 2px #fff}
.omn-grid .video:after{content:"▶";position:absolute;color:#fff;font-size:18px;margin-left:4px}

.omn-row2{margin-top:14px;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.omn-row2 a{position:relative;display:block;height:300px;overflow:hidden;background:#1a3220;border-radius:4px}
.omn-row2 a img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.omn-row2 a:hover img{transform:scale(1.04)}
.omn-row2 .cap{position:absolute;left:18px;right:18px;bottom:18px;color:#fff;font-size:15px;font-weight:600}
.omn-row2 .cap em{display:block;font-style:normal;font-size:12px;color:#ffd97a;margin-bottom:6px}

/* ===================== Footer ===================== */
.cau-footer{font-size:13px;margin-top:24px}
.cau-foot-bar{background:linear-gradient(180deg,var(--cau-green) 0%,var(--cau-green-2) 100%);padding:36px 0}
.cau-foot-bar-in{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.ft-quick{text-align:center;color:#fff}
.ft-quick a{display:flex;flex-direction:column;align-items:center;gap:8px;color:#fff}
.ft-quick a:hover .ic{background:#ffd97a;color:var(--cau-green-d)}
.ft-quick a:hover{color:#ffd97a}
.ft-quick .ic{width:64px;height:64px;border-radius:50%;background:rgba(255,255,255,.18);display:inline-flex;align-items:center;justify-content:center;font-size:24px;border:1px solid rgba(255,255,255,.4);transition:all .25s}
.ft-quick .ic svg{width:28px;height:28px;stroke:currentColor;fill:none;stroke-width:1.6}
.ft-quick em{font-style:normal;font-size:14px;letter-spacing:2px}

.cau-foot-cr{background:var(--cau-dark);color:#bdb6a6;padding:30px 0 24px}
.cau-foot-cr-in{display:flex;align-items:center;gap:30px;flex-wrap:wrap}
.ft-brand{display:flex;align-items:center;gap:14px;flex-shrink:0}
.ft-brand img{height:48px;background:#fff;border-radius:50%;padding:5px}
.ft-brand-txt strong{display:block;font-size:18px;letter-spacing:6px;font-family:"FangSong",serif;color:#fff}
.ft-brand-txt em{display:block;font-size:11px;letter-spacing:2px;font-style:normal;color:#cab787;margin-top:3px}
.ft-info{flex:1;color:#bdb6a6;line-height:2}
.ft-info p{margin:0;font-size:13px}
.ft-info a{color:#cab787}
.ft-info a:hover{color:#fff}
.ft-info .sep{margin:0 10px;opacity:.4}
.ft-flink{flex-basis:100%;margin-top:14px;padding-top:18px;border-top:1px solid rgba(255,255,255,.08);color:#8e8676;line-height:2}
.ft-flink strong{color:#cab787;margin-right:10px}
.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-end{flex-basis:100%;margin-top:10px;font-size:12px;color:#8e8676;line-height:2.2;border-top:1px solid rgba(255,255,255,.06);padding-top:14px}
.ft-cr-end .sep{margin:0 10px;opacity:.4}

/* ===================== 列表/详情页 ===================== */
.cau-page{padding:40px 0 60px;background:var(--cau-cream-2)}
.page-wrap{display:grid;grid-template-columns:240px 1fr;gap:30px;align-items:flex-start}
.pg-side{background:#fff;padding:24px 20px;border-radius:6px;border-top:3px solid var(--cau-green)}
.pg-side h3{font-size:20px;color:var(--cau-green);padding-bottom:10px;margin-bottom:14px;letter-spacing:2px;border-bottom:1px solid var(--cau-line)}
.pg-side ul li{padding:10px 0;border-bottom:1px dashed #eee}
.pg-side ul li a:hover{color:var(--cau-green);padding-left:6px}
.pg-main{background:#fff;padding:24px 30px;min-height:400px;border-radius:6px;box-shadow:0 1px 6px rgba(0,0,0,.04)}
.pg-bread{font-size:13px;color:var(--cau-gray);padding-bottom:14px;border-bottom:1px solid #eee;margin-bottom:18px}
.pg-bread a{color:var(--cau-gray)}
.pg-bread a:hover{color:var(--cau-green)}
.pg-tt{margin:0 0 18px;font-size:24px;font-weight:700;color:var(--cau-green);letter-spacing:2px;padding-bottom:10px;border-bottom:2px solid var(--cau-green);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(--cau-green);margin-right:10px;font-weight:700;font-size:22px}
.pg-list li .d{font-size:12px;color:var(--cau-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(--cau-ink)}
.pg-pagebar a:hover,.pg-pagebar .current{background:var(--cau-green);color:#fff;border-color:var(--cau-green)}
.pg-art h1{font-size:26px;line-height:1.5;color:var(--cau-ink);margin-bottom:14px;text-align:center}
.pg-art .meta{text-align:center;color:var(--cau-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){
  .cau-wrap{padding:0 20px}
  .cau-nav{gap:18px}
  .cau-nav>li>a{font-size:14px}
  .cau-logo{width:240px;height:104px}
  .cau-lg-txt strong{font-size:18px;letter-spacing:5px}
  .bn-cap .bn-t{font-size:42px;letter-spacing:8px}
  .bn-cap .bn-d{font-size:20px;letter-spacing:4px}
  .news-grid{grid-template-columns:1.4fr 1fr 1fr}
  .nws-big{height:460px}
  .tp-card{width:480px;height:300px}
  .cau-exhibit h2{font-size:48px;letter-spacing:14px}
}
@media (max-width:1024px){
  body.cau-body{font-size:13px}
  .cau-mast-in{height:80px}
  .cau-logo{width:200px;height:90px;padding:10px 14px 12px}
  .cau-logo img{height:36px}
  .cau-lg-txt strong{font-size:15px;letter-spacing:3px}
  .cau-nav{gap:12px}
  .cau-nav>li>a{font-size:13px;letter-spacing:0}
  .cau-banner{height:460px}
  .news-grid{grid-template-columns:1fr 1fr;gap:18px}
  .nws-big{grid-column:1/3;height:380px}
  .tp-stage{height:380px}
  .tp-card{width:380px;height:240px}
  .rs-grid{grid-template-columns:1fr;gap:24px}
  .rs-pic{min-height:300px}
  .sty-list{grid-template-columns:1fr 1fr}
  .sty-it:nth-child(3){grid-column:1/3;border-left:0}
  .omn-grid{grid-template-columns:repeat(2,1fr)}
  .cau-foot-bar-in{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:768px){
  .cau-topbar{display:none}
  .cau-mast-in{height:62px;gap:0}
  .cau-mast:after{display:none}
  .cau-logo{width:140px;height:62px;border-radius:0;top:0;background:transparent;box-shadow:none;padding:6px}
  .cau-logo:before{display:none}
  .cau-logo img{height:30px}
  .cau-lg-txt strong{font-size:12px;letter-spacing:1px;color:#fff}
  .cau-lg-txt em{display:none}
  .cau-nav-l,.cau-nav-r,.cau-tools{display:none}
  .cau-burger{display:flex}
  .cau-banner{height:300px;margin-top:0}
  .bn-cap .bn-t{font-size:24px;letter-spacing:4px}
  .bn-cap .bn-d{font-size:13px;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:14px}
  .cau-news,.cau-topics,.cau-notice,.cau-research,.cau-omn{padding:40px 0}
  .sec-tt{font-size:24px;letter-spacing:1px}
  .news-grid{grid-template-columns:1fr}
  .nws-big{grid-column:auto;height:240px}
  .nws-img{height:200px}
  .tp-stage{height:240px;perspective:none}
  .tp-card{width:80%;height:200px}
  .tp-card[data-pos="-2"],.tp-card[data-pos="2"]{display:none}
  .tp-card[data-pos="-1"]{transform:translateX(-60%) scale(.8);opacity:.6}
  .tp-card[data-pos="1"]{transform:translateX(60%) scale(.8);opacity:.6}
  .nt-grid{grid-template-columns:1fr;gap:24px}
  .sty-list{grid-template-columns:1fr}
  .sty-it{height:240px;border-left:0;border-top:4px solid var(--cau-green-2)}
  .sty-it:first-child{border-top:0}
  .cau-exhibit{padding:50px 0}
  .cau-exhibit h2{font-size:30px;letter-spacing:6px}
  .cau-exhibit p{font-size:14px;letter-spacing:3px}
  .omn-grid{grid-template-columns:1fr 1fr;gap:8px}
  .omn-grid a{height:160px}
  .omn-row2{grid-template-columns:1fr}
  .omn-row2 a{height:200px}
  .cau-foot-bar-in{grid-template-columns:repeat(3,1fr);gap:18px 6px}
  .ft-quick .ic{width:50px;height:50px;font-size:18px}
  .ft-quick em{font-size:12px}
  .cau-foot-cr-in{flex-direction:column;align-items:flex-start;gap:14px}
  .ft-info p{font-size:12px}
  .page-wrap{grid-template-columns:1fr}
  .pg-side{order:2}
}