/* ============================================================
   主题三 · 现代青蓝  —— 白 / 文化蓝 / 青绿 / 卡片化
   ============================================================ */
:root{
  --bg:#f4f8fa; --card:#ffffff;
  --blue:#0f6c8f; --blue-deep:#0a4f6b; --cyan:#13a3b8;
  --accent:#f0a83a; --red:#e0584f;
  --ink:#1f2d3d; --ink-soft:#5c6b7a; --line:#e2ebf0;
  --font-title:"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  --font-body:"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:var(--font-body);color:var(--ink);background:var(--bg);line-height:1.7}
a{color:inherit;text-decoration:none}
.container{width:1200px;max-width:94%;margin:0 auto}

/* 顶部工具条 */
.topbar{background:var(--blue-deep);color:#cfe3ec;font-size:13px}
.topbar-inner{display:flex;justify-content:space-between;height:38px;align-items:center}
.topbar a{margin-left:22px;opacity:.9}
.topbar a:hover{color:#fff}
.topbar-left a:first-child{margin-left:0}

/* 头部 */
.site-header{background:#fff;box-shadow:0 2px 14px rgba(15,80,110,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:20px 0}
.brand{display:flex;align-items:center;gap:16px}
.brand-seal{width:60px;height:60px;border-radius:16px;background:linear-gradient(135deg,var(--cyan),var(--blue));color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:30px;font-weight:800;flex:none;
  box-shadow:0 8px 18px rgba(15,108,143,.3)}
.brand-name{font-size:30px;font-weight:800;letter-spacing:2px;color:var(--blue-deep)}
.brand-sub{font-size:11.5px;letter-spacing:2px;color:var(--ink-soft);margin-top:2px}
.header-search{display:flex;border:1.5px solid var(--line);border-radius:999px;overflow:hidden;background:var(--bg)}
.header-search input{border:0;outline:0;padding:10px 20px;width:240px;font-size:14px;background:transparent}
.header-search button{border:0;background:linear-gradient(135deg,var(--cyan),var(--blue));color:#fff;padding:0 26px;cursor:pointer;font-size:14px;letter-spacing:2px}

/* 导航 */
.main-nav{background:#fff;position:relative;z-index:50;border-bottom:1px solid var(--line)}
.nav-list{display:flex;list-style:none;justify-content:center}
.nav-item{position:relative}
.nav-item>a{display:block;padding:17px 26px;color:var(--ink);font-size:16.5px;font-weight:600;letter-spacing:1px;position:relative}
.nav-item>a::after{content:"";position:absolute;left:50%;bottom:8px;width:0;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--cyan),var(--blue));transition:.25s;transform:translateX(-50%)}
.nav-item:hover>a,.nav-item.active>a{color:var(--blue)}
.nav-item:hover>a::after,.nav-item.active>a::after{width:60%}
.dropdown{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);min-width:176px;background:#fff;
  border-radius:0 0 14px 14px;display:none;list-style:none;overflow:hidden;box-shadow:0 16px 34px rgba(15,80,110,.16);
  border-top:3px solid var(--cyan);opacity:0;transition:.2s}
.nav-item:hover .dropdown{display:block;opacity:1;transform:translateX(-50%) translateY(0)}
.dropdown a{display:block;padding:12px 22px;font-size:15px;color:var(--ink-soft);text-align:center;border-bottom:1px solid var(--bg)}
.dropdown li:last-child a{border-bottom:0}
.dropdown a:hover{background:#f0f8fb;color:var(--blue);font-weight:600}

/* 轮播 */
.banner{position:relative;height:440px;overflow:hidden}
.banner-track{height:100%}
.banner-slide{position:absolute;inset:0;display:flex;align-items:center;opacity:0;transition:opacity .9s;
  background:radial-gradient(circle at 82% 30%,rgba(255,255,255,.16),transparent 42%),linear-gradient(120deg,#0a4f6b,#13a3b8)}
.banner-slide.s-b{background:radial-gradient(circle at 82% 30%,rgba(255,255,255,.16),transparent 42%),linear-gradient(120deg,#7a3b30,#e0584f)}
.banner-slide.s-c{background:radial-gradient(circle at 82% 30%,rgba(255,255,255,.16),transparent 42%),linear-gradient(120deg,#1f5c54,#2ea88e)}
.banner-slide.active{opacity:1}
.slide-inner{width:1200px;max-width:94%;margin:0 auto;color:#fff}
.slide-tag{display:inline-block;background:rgba(255,255,255,.18);backdrop-filter:blur(4px);padding:5px 18px;border-radius:999px;
  font-size:14px;letter-spacing:2px;margin-bottom:22px}
.slide-title{font-size:50px;font-weight:800;letter-spacing:4px;line-height:1.3}
.slide-desc{margin-top:18px;max-width:620px;font-size:16.5px;line-height:1.9;color:rgba(255,255,255,.9)}
.slide-btn{display:inline-block;margin-top:30px;background:#fff;color:var(--blue-deep);padding:12px 36px;border-radius:999px;
  font-size:16px;font-weight:700;letter-spacing:2px;box-shadow:0 10px 24px rgba(0,0,0,.15)}
.slide-btn:hover{background:var(--accent);color:#4a3205}
.banner-arrow{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;border-radius:50%;
  background:rgba(255,255,255,.2);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;cursor:pointer;z-index:5;border:0}
.banner-arrow:hover{background:rgba(255,255,255,.4)}
.banner-arrow.prev{left:24px}.banner-arrow.next{right:24px}
.banner-dots{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:5}
.banner-dots span{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.5);cursor:pointer;transition:.2s}
.banner-dots span.active{background:#fff;width:30px;border-radius:99px}

/* 区块 */
.section{padding:56px 0}
.section.alt{background:#fff}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:34px}
.sec-title-wrap{text-align:left}
.section-title{font-size:28px;font-weight:800;letter-spacing:2px;color:var(--blue-deep);display:flex;align-items:center;gap:12px}
.section-title::before{content:"";width:6px;height:26px;border-radius:4px;background:linear-gradient(180deg,var(--cyan),var(--blue))}
.section-en{color:var(--ink-soft);font-size:12px;letter-spacing:2.5px;text-transform:uppercase;margin-left:18px}
.section-more{font-size:14.5px;color:var(--blue);font-weight:600}
.section-more:hover{color:var(--cyan)}

/* 两大板块 */
.twin-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:-52px;position:relative;z-index:10}
.twin-card{background:#fff;border-radius:20px;padding:38px 36px;position:relative;overflow:hidden;
  box-shadow:0 18px 40px rgba(15,80,110,.16);transition:.3s}
.twin-card:hover{transform:translateY(-6px);box-shadow:0 26px 50px rgba(15,80,110,.24)}
.twin-card::after{content:"";position:absolute;right:-50px;bottom:-50px;width:180px;height:180px;border-radius:50%;
  background:radial-gradient(circle,rgba(19,163,184,.12),transparent 70%)}
.twin-card.heritage::after{background:radial-gradient(circle,rgba(224,88,79,.12),transparent 70%)}
.twin-icon{width:74px;height:74px;border-radius:20px;background:linear-gradient(135deg,var(--cyan),var(--blue));color:#fff;
  display:flex;align-items:center;justify-content:center;margin-bottom:20px;box-shadow:0 10px 22px rgba(15,108,143,.3)}
.twin-card.heritage .twin-icon{background:linear-gradient(135deg,#f0a83a,#e0584f);box-shadow:0 10px 22px rgba(224,88,79,.3)}
.twin-icon svg{width:40px;height:40px}
.twin-title{font-size:27px;font-weight:800;letter-spacing:2px;color:var(--blue-deep)}
.twin-en{font-size:11.5px;letter-spacing:2.5px;color:var(--ink-soft);margin:4px 0 14px}
.twin-desc{font-size:15px;color:var(--ink-soft);line-height:2}
.twin-links{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap;position:relative}
.twin-links a{background:#eef7fa;color:var(--blue-deep);padding:8px 20px;font-size:14px;border-radius:999px;font-weight:600}
.twin-card.heritage .twin-links a{background:#fdf0ee;color:#a83b34}
.twin-links a:hover{background:var(--blue);color:#fff}
.twin-card.heritage .twin-links a:hover{background:var(--red);color:#fff}

/* 新闻 */
.news-grid{display:grid;grid-template-columns:1.25fr .9fr;gap:28px}
.news-panel{background:#fff;border-radius:18px;padding:28px 30px;box-shadow:0 8px 24px rgba(15,80,110,.07)}
.news-panel h3{font-size:20px;font-weight:800;letter-spacing:1px;margin-bottom:16px;color:var(--blue-deep);
  display:flex;align-items:center;gap:10px}
.news-panel h3::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--cyan);transform:rotate(45deg)}
.news-list{list-style:none}
.news-item{display:flex;align-items:baseline;gap:14px;padding:12px 0;border-bottom:1px solid var(--bg)}
.news-item:last-child{border-bottom:0}
.news-date{flex:none;font-size:13.5px;color:var(--cyan);font-weight:700;background:#eef7fa;padding:2px 10px;border-radius:6px}
.news-title{font-size:15.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.news-title:hover{color:var(--blue)}

/* 非遗名录 */
.heritage-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.h-card{background:#fff;border-radius:18px;padding:28px 22px 24px;text-align:center;transition:.3s;
  box-shadow:0 6px 18px rgba(15,80,110,.07);border:1px solid transparent}
.h-card:hover{transform:translateY(-7px);box-shadow:0 20px 38px rgba(15,80,110,.16);border-color:#cfe8f0}
.h-icon{width:70px;height:70px;margin:0 auto 16px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#eef7fa,#d9eff5);color:var(--blue)}
.h-card:hover .h-icon{background:linear-gradient(135deg,var(--cyan),var(--blue));color:#fff}
.h-icon svg{width:36px;height:36px}
.h-name{font-size:20px;font-weight:800;letter-spacing:1px;color:var(--blue-deep)}
.h-meta{margin:10px 0}
.h-level{display:inline-block;background:linear-gradient(135deg,#f0a83a,#e0893a);color:#fff;font-size:12px;padding:3px 12px;border-radius:999px;font-weight:600}
.h-cat{display:inline-block;background:#eef7fa;font-size:12px;padding:3px 12px;border-radius:999px;margin-left:6px;color:var(--blue-deep)}
.h-desc{font-size:13.5px;color:var(--ink-soft);line-height:1.9;text-align:left}

/* 课程 */
.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.c-card{background:#fff;border-radius:18px;padding:26px 28px;position:relative;transition:.3s;box-shadow:0 6px 18px rgba(15,80,110,.07)}
.c-card:hover{transform:translateY(-5px);box-shadow:0 18px 36px rgba(15,80,110,.14)}
.c-tag{position:absolute;top:20px;right:20px;background:linear-gradient(135deg,var(--cyan),var(--blue));color:#fff;font-size:12px;padding:4px 14px;border-radius:999px;font-weight:600}
.c-tag.full{background:#b6c2ca}
.c-name{font-size:20px;font-weight:800;letter-spacing:1px;color:var(--blue-deep);margin-bottom:12px;padding-right:60px}
.c-line{font-size:14px;color:var(--ink-soft);padding:3px 0;display:flex;gap:8px}
.c-line::before{content:"›";color:var(--cyan);font-weight:800}
.c-sign{display:inline-block;margin-top:14px;background:linear-gradient(135deg,var(--cyan),var(--blue));color:#fff;
  padding:9px 28px;font-size:14.5px;border-radius:999px;font-weight:600}
.c-sign:hover{box-shadow:0 8px 18px rgba(15,108,143,.35)}
.c-sign.disabled{background:#c6d2d9;pointer-events:none}

/* 活动 */
.act-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.a-card{background:#fff;border-radius:18px;padding:26px 24px;transition:.3s;box-shadow:0 6px 18px rgba(15,80,110,.07);border-top:4px solid var(--cyan)}
.a-card:nth-child(2){border-top-color:var(--accent)}
.a-card:nth-child(3){border-top-color:var(--red)}
.a-card:nth-child(4){border-top-color:#2ea88e}
.a-card:hover{transform:translateY(-5px);box-shadow:0 18px 36px rgba(15,80,110,.14)}
.a-icon{width:54px;height:54px;color:var(--blue);margin-bottom:14px;background:#eef7fa;border-radius:14px;padding:10px}
.a-icon svg{width:100%;height:100%}
.a-name{font-size:17.5px;font-weight:800;line-height:1.6;min-height:56px;color:var(--ink)}
.a-line{font-size:13.5px;color:var(--ink-soft);margin-top:6px}
.a-status{display:inline-block;margin-top:14px;font-size:13px;font-weight:700;color:var(--blue);background:#eef7fa;padding:4px 14px;border-radius:999px}

/* 文化吴起 */
.culture-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cul-card{border-radius:18px;overflow:hidden;background:#fff;box-shadow:0 8px 24px rgba(15,80,110,.08);transition:.3s}
.cul-card:hover{transform:translateY(-6px);box-shadow:0 20px 40px rgba(15,80,110,.16)}
.cul-top{padding:30px 28px 20px;color:#fff;position:relative}
.cul-card:nth-child(1) .cul-top{background:linear-gradient(135deg,#c9544a,#a83b34)}
.cul-card:nth-child(2) .cul-top{background:linear-gradient(135deg,#b5813a,#8a5d1f)}
.cul-card:nth-child(3) .cul-top{background:linear-gradient(135deg,#2a9180,#176b5e)}
.cul-title{font-size:24px;font-weight:800;letter-spacing:2px}
.cul-en{font-size:11.5px;letter-spacing:2.5px;opacity:.85;margin-top:4px}
.cul-body{padding:22px 28px 28px;font-size:14.5px;line-height:2.1;color:var(--ink-soft)}

/* 子页横幅 */
.page-hero{padding:64px 0;color:#fff;background:radial-gradient(circle at 80% 10%,rgba(255,255,255,.14),transparent 45%),linear-gradient(120deg,var(--blue-deep),var(--cyan))}
.page-hero.alt-b{background:radial-gradient(circle at 80% 10%,rgba(255,255,255,.14),transparent 45%),linear-gradient(120deg,#a83b34,#e0584f)}
.page-hero h1{font-size:38px;font-weight:800;letter-spacing:3px}
.page-hero p{margin-top:12px;color:rgba(255,255,255,.88);font-size:16px}
.breadcrumb{font-size:14px;color:var(--ink-soft);padding:16px 0}
.breadcrumb a:hover{color:var(--blue)}

/* 主+侧栏 */
.layout{display:grid;grid-template-columns:1fr 300px;gap:30px;padding:10px 0 50px}
.side-box{background:#fff;border-radius:16px;margin-bottom:24px;overflow:hidden;box-shadow:0 6px 18px rgba(15,80,110,.07)}
.side-box h3{background:linear-gradient(135deg,var(--blue-deep),var(--blue));color:#fff;font-size:17px;font-weight:700;letter-spacing:2px;padding:16px 22px}
.side-box ul{list-style:none;padding:8px 0}
.side-box li a{display:block;padding:12px 22px;font-size:15px;color:var(--ink-soft);border-bottom:1px solid var(--bg)}
.side-box li:last-child a{border-bottom:0}
.side-box li a:hover{background:#f0f8fb;color:var(--blue);font-weight:600}
.side-contact{padding:20px 22px;font-size:14.5px;line-height:2.2;color:var(--ink-soft)}
.content-card{background:#fff;border-radius:16px;padding:36px 40px;box-shadow:0 6px 18px rgba(15,80,110,.07)}
.content-card h2{font-size:22px;font-weight:800;letter-spacing:1px;margin:28px 0 12px;color:var(--blue-deep);display:flex;align-items:center;gap:10px}
.content-card h2::before{content:"";width:6px;height:20px;border-radius:3px;background:linear-gradient(180deg,var(--cyan),var(--blue))}
.content-card h2:first-child{margin-top:0}
.content-card p{font-size:15.5px;line-height:2.1;margin-bottom:12px;color:#44535f}

/* 场馆 */
.venue-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.v-card{background:#fff;border-radius:16px;padding:26px;transition:.3s;box-shadow:0 6px 18px rgba(15,80,110,.07);border-bottom:4px solid transparent}
.v-card:hover{transform:translateY(-5px);border-bottom-color:var(--cyan);box-shadow:0 18px 36px rgba(15,80,110,.14)}
.v-name{font-size:19px;font-weight:800;letter-spacing:1px;color:var(--blue-deep)}
.v-area{display:inline-block;color:var(--blue);font-size:13px;margin:8px 0 10px;font-weight:700;background:#eef7fa;padding:2px 12px;border-radius:999px}
.v-desc{font-size:14px;color:var(--ink-soft);line-height:1.9}

/* 传承人 */
.inh-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.inh-card{background:#fff;border-radius:16px;padding:26px;display:flex;gap:18px;align-items:center;transition:.3s;box-shadow:0 6px 18px rgba(15,80,110,.07)}
.inh-card:hover{transform:translateY(-5px);box-shadow:0 18px 36px rgba(15,80,110,.14)}
.inh-avatar{width:80px;height:80px;border-radius:50%;flex:none;display:flex;align-items:center;justify-content:center;color:#fff;
  background:linear-gradient(135deg,var(--cyan),var(--blue));box-shadow:0 8px 18px rgba(15,108,143,.3)}
.inh-avatar svg{width:42px;height:42px}
.inh-name{font-size:21px;font-weight:800;color:var(--blue-deep)}
.inh-title{color:var(--blue);font-size:13.5px;margin:3px 0;font-weight:700}
.inh-proj{font-size:14px;color:var(--ink-soft)}

/* 数字展厅 */
.hall-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.hl-card{position:relative;overflow:hidden;border-radius:18px;min-height:210px;display:flex;flex-direction:column;justify-content:flex-end;
  background:linear-gradient(165deg,#13a3b8,#0a4f6b);color:#fff;padding:26px;transition:.3s}
.hl-card:hover{transform:scale(1.03);box-shadow:0 20px 40px rgba(15,80,110,.3)}
.hl-card::after{content:"";position:absolute;top:-40px;right:-40px;width:140px;height:140px;border-radius:50%;background:rgba(255,255,255,.12)}
.hl-card .hl-icon{position:absolute;top:24px;right:24px;width:48px;height:48px;color:rgba(255,255,255,.9);z-index:1}
.hl-card .hl-icon svg{width:100%;height:100%}
.hl-name{font-size:19px;font-weight:800;letter-spacing:1px;position:relative}
.hl-count{font-size:13px;color:rgba(255,255,255,.85);margin-top:4px;position:relative}

/* 分页 */
.pagination{display:flex;justify-content:center;gap:8px;margin:36px 0 10px}
.pagination a,.pagination span{background:#fff;border:1px solid var(--line);padding:9px 17px;font-size:14px;border-radius:10px;color:var(--ink-soft)}
.pagination .current{background:linear-gradient(135deg,var(--cyan),var(--blue));color:#fff;border-color:transparent}

/* 文章详情 */
.article-head{text-align:center;padding-bottom:24px;border-bottom:1px solid var(--line);margin-bottom:26px}
.article-head h1{font-size:27px;font-weight:800;letter-spacing:1px;line-height:1.6;color:var(--blue-deep)}
.article-meta{color:var(--ink-soft);font-size:14px;margin-top:14px}
.article-body p{font-size:16px;line-height:2.2;text-indent:2em;margin-bottom:14px;color:#44535f}

/* 页脚 */
.footer{background:var(--blue-deep);color:#b9d4df;margin:20px 0 0;padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px;padding-bottom:36px}
.footer h4{color:#fff;font-size:17px;font-weight:700;letter-spacing:2px;margin-bottom:16px}
.footer p,.footer a{font-size:14px;line-height:2.3;color:#b9d4df}
.footer a:hover{color:#fff}
.footer ul{list-style:none}
.footer .seal{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,var(--cyan),var(--blue));color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:28px;font-weight:800;margin-bottom:12px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;text-align:center;font-size:13px;color:#7fa8b8}

@media (max-width:960px){
  .twin-grid,.news-grid,.culture-grid{grid-template-columns:1fr}
  .heritage-grid,.hall-grid,.act-grid{grid-template-columns:repeat(2,1fr)}
  .course-grid,.venue-grid,.inh-grid{grid-template-columns:1fr}
  .layout{grid-template-columns:1fr}
  .nav-list{flex-wrap:wrap}
  .slide-title{font-size:32px;letter-spacing:2px}
  .header-inner{flex-direction:column;gap:16px}
}
/* ===== ???????????????????? ===== */
.twin-grid>*,.news-grid>*,.heritage-grid>*,.course-grid>*,.act-grid>*,.culture-grid>*,.venue-grid>*,.inh-grid>*,.hall-grid>*,.layout>*,.footer-grid>*{min-width:0}
.news-list{margin:0;padding:0;list-style:none}
.side-box ul{margin:0;padding:8px 0;list-style:none}
@media (max-width:960px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .news-panel{padding:20px 22px}
  .content-card{padding:24px 20px}
  .brand-name{font-size:25px;letter-spacing:2px}
  .header-search input{width:170px}
  .nav-item>a{padding:12px 16px;font-size:16px}
  .section{padding:38px 0}
  .twin-grid{margin-top:-30px}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr}
  .heritage-grid,.hall-grid,.act-grid{grid-template-columns:1fr}
  .slide-title{font-size:29px!important;letter-spacing:3px!important}
  .page-hero h1{font-size:28px;letter-spacing:4px}
}