@charset "utf-8";
/* ============================================================
   当代瓷器艺术网 · 青花素白 视觉系统  v2.0
   配色：素白纸底 + 青花蓝 + 鎏金细线
   字体：标题衬线（宋），正文无衬线（苹方）
   ============================================================ */

:root{
  --ink:#1E2226;
  --ink-2:#3D444B;
  --ink-3:#6B737A;
  --muted:#9AA1A7;
  --blue:#1F4E8C;
  --blue-deep:#16375F;
  --blue-wash:#F2F5FA;
  --gold:#B08A4A;
  --gold-soft:#D9C49B;
  --line:#E9E6E0;
  --line-2:#F1EFEA;
  --paper:#FFFFFF;
  --paper-soft:#FBFAF7;
  --serif:"Songti SC","Noto Serif SC",Georgia,"SimSun",serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
  --shadow:0 1px 2px rgba(30,34,38,.04);
  --shadow-hover:0 14px 34px -12px rgba(30,34,38,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:15px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;border:0;vertical-align:middle}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--blue)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:500;letter-spacing:.01em;line-height:1.45}
p{margin:0 0 1em}
input,button{font-family:inherit}
::selection{background:rgba(31,78,140,.12)}

.wrap{width:100%;max-width:1220px;margin:0 auto;padding:0 28px}
.clearfix::after{content:"";display:block;clear:both}

/* ---------- 顶部信息条 ---------- */
.topbar{
  border-bottom:1px solid var(--line-2);
  background:var(--paper);
  font-size:12px;color:var(--ink-3);letter-spacing:.04em;
}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:38px}
.topbar .slogan{font-family:var(--serif);letter-spacing:.14em;color:var(--ink-3)}
.topbar nav{display:flex;gap:22px}
.topbar nav a{color:var(--ink-3)}
.topbar nav a:hover{color:var(--blue)}

/* ---------- 页头 ---------- */
.site-header{background:var(--paper);border-bottom:1px solid var(--line)}
.site-header .wrap{
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;height:96px;
}
.brand{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.brand img{max-height:52px;width:auto}
.brand .brand-txt{display:none}
.brand .brand-name{
  font-family:var(--serif);font-size:23px;letter-spacing:.16em;
  color:var(--ink);white-space:nowrap;
}
.brand .brand-sub{
  display:block;font-family:var(--sans);font-size:10px;
  letter-spacing:.28em;color:var(--muted);margin-top:4px;text-transform:uppercase;
}

/* 主导航 */
.main-nav{display:flex;align-items:center;gap:2px;flex:1 1 auto;justify-content:flex-end}
.main-nav>li{position:relative}
.main-nav>li>a{
  display:block;padding:0 13px;line-height:96px;
  font-size:14.5px;color:var(--ink-2);letter-spacing:.03em;white-space:nowrap;
}
.main-nav>li>a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:30px;height:1px;
  background:var(--blue);transform:scaleX(0);transform-origin:right;
  transition:transform .3s var(--ease);
}
.main-nav>li:hover>a{color:var(--blue)}
.main-nav>li:hover>a::after{transform:scaleX(1);transform-origin:left}
.main-nav>li.active>a{color:var(--blue)}
.main-nav>li.active>a::after{transform:scaleX(1);background:var(--blue)}

/* 下拉 */
.main-nav .sub-menu{
  position:absolute;top:96px;left:50%;transform:translate(-50%,8px);
  min-width:158px;padding:10px 0;background:var(--paper);
  border:1px solid var(--line);box-shadow:0 18px 40px -18px rgba(30,34,38,.22);
  opacity:0;visibility:hidden;transition:all .26s var(--ease);z-index:60;
}
.main-nav li:hover .sub-menu{opacity:1;visibility:visible;transform:translate(-50%,0)}
.main-nav .sub-menu a{
  display:block;padding:9px 20px;font-size:13.5px;color:var(--ink-2);
  white-space:nowrap;text-align:center;
}
.main-nav .sub-menu a:hover{color:var(--blue);background:var(--blue-wash)}
.main-nav .sub-menu a::after{display:none}

/* 搜索 */
.search-toggle{
  display:flex;align-items:center;justify-content:center;
  width:38px;height:38px;margin-left:8px;border-radius:50%;
  border:1px solid var(--line);background:none;cursor:pointer;
  transition:all .24s var(--ease);
}
.search-toggle svg{width:15px;height:15px;stroke:var(--ink-3);fill:none;stroke-width:1.6}
.search-toggle:hover{border-color:var(--blue);background:var(--blue-wash)}
.search-toggle:hover svg{stroke:var(--blue)}

.search-panel{
  display:none;border-top:1px solid var(--line);background:var(--paper-soft);
}
.search-panel.on{display:block}
.search-panel form{
  display:flex;align-items:center;gap:12px;max-width:720px;margin:0 auto;
  padding:22px 28px;
}
.search-panel input[type=text]{
  flex:1;height:46px;padding:0 16px;font-size:15px;color:var(--ink);
  border:1px solid var(--line);background:#fff;outline:none;
  transition:border-color .22s;
}
.search-panel input[type=text]:focus{border-color:var(--blue)}
.search-panel button{
  height:46px;padding:0 30px;border:0;background:var(--blue);color:#fff;
  font-size:14px;letter-spacing:.16em;cursor:pointer;transition:background .22s;
}
.search-panel button:hover{background:var(--blue-deep)}

/* ---------- 区块通用 ---------- */
.section{padding:64px 0 8px}
.section.tight{padding:48px 0 0}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;margin-bottom:30px;padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.sec-head .sec-title{display:flex;align-items:baseline;gap:14px}
.sec-head h2{
  position:relative;padding-left:16px;font-size:24px;color:var(--ink);
  letter-spacing:.1em;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:2px;
  background:var(--blue);
}
.sec-head .en{
  font-family:var(--sans);font-size:10px;letter-spacing:.3em;
  color:var(--muted);text-transform:uppercase;
}
.sec-head .more{font-size:13px;color:var(--ink-3);letter-spacing:.06em;white-space:nowrap}
.sec-head .more:hover{color:var(--blue)}
.sec-desc{margin:-18px 0 28px;font-size:14px;color:var(--ink-3);line-height:1.9}

/* ---------- 首屏 ---------- */
.hero{padding:26px 0 0}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,1.62fr) minmax(0,1fr);gap:40px;align-items:stretch;
}
.hero-lead{position:relative;overflow:hidden;background:var(--paper-soft)}
.hero-lead .thumb{
  position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:#EDEBE6;
}
.hero-lead .thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform 1.1s var(--ease);transform:scale(1.005);
}
.hero-lead:hover .thumb img{transform:scale(1.045)}
.hero-lead .txt{padding:26px 2px 0}
.hero-lead .kicker{
  display:inline-block;margin-bottom:12px;font-size:11px;letter-spacing:.22em;
  color:var(--gold);text-transform:uppercase;
}
.hero-lead h1{font-size:29px;line-height:1.5;letter-spacing:.02em}
.hero-lead h1 a:hover{color:var(--blue)}
.hero-lead .excerpt{
  margin-top:12px;font-size:14.5px;color:var(--ink-3);line-height:1.95;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.hero-lead .meta{margin-top:14px;font-size:12.5px;color:var(--muted);letter-spacing:.04em}

/* 首屏右侧快讯 */
.hero-side{
  display:flex;flex-direction:column;
  border-top:1px solid var(--ink);padding-top:18px;
}
.hero-side .side-label{
  font-size:11px;letter-spacing:.26em;color:var(--muted);
  text-transform:uppercase;margin-bottom:8px;
}
.hero-side .side-link{position:absolute}
.hero-list{flex:1;display:flex;flex-direction:column;justify-content:space-between}
.hero-list li{border-bottom:1px solid var(--line-2)}
.hero-list li:last-child{border-bottom:0}
.hero-list a{display:block;padding:13px 0}
.hero-list .it-title{
  font-family:var(--serif);font-size:16px;line-height:1.6;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .22s var(--ease);
}
.hero-list a:hover .it-title{color:var(--blue)}
.hero-list .it-meta{margin-top:7px;font-size:12px;color:var(--muted);letter-spacing:.04em}
.hero-list .it-meta span+span::before{content:"·";margin:0 8px;color:var(--line)}

/* ---------- 卡片栅格 ---------- */
.grid{display:grid;gap:34px 28px}
.grid.col4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid.col3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid.col2{grid-template-columns:repeat(2,minmax(0,1fr))}

.card{display:flex;flex-direction:column;position:relative}
.card .thumb{
  position:relative;display:block;overflow:hidden;background:#EDEBE6;
  aspect-ratio:4/3;
}
.card .thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .9s var(--ease);
}
.card:hover .thumb img{transform:scale(1.06)}
.card .thumb .cat{
  position:absolute;left:0;top:0;padding:5px 12px;
  background:rgba(31,78,140,.92);color:#fff;font-size:11px;letter-spacing:.14em;
}
.card h3{
  margin-top:16px;font-size:17px;line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card h3 a:hover{color:var(--blue)}
.card .desc{
  margin-top:9px;font-size:13.5px;color:var(--ink-3);line-height:1.85;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card .meta{margin-top:12px;font-size:12px;color:var(--muted);letter-spacing:.04em}

/* 首条大卡 */
.card.feature-first .thumb{aspect-ratio:16/11}
.card.feature-first h3{font-size:19px}

/* ---------- 三栏文字列表 ---------- */
.col3-wrap{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:52px}
.list-block .lb-head{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:12px;border-bottom:1px solid var(--ink);margin-bottom:6px;
}
.list-block .lb-head h3{font-size:18px;letter-spacing:.12em}
.list-block .lb-head a{font-size:12px;color:var(--muted)}
.list-block .lb-head a:hover{color:var(--blue)}
.tlist li{border-bottom:1px solid var(--line-2)}
.tlist li:last-child{border-bottom:0}
.tlist a{display:flex;gap:14px;padding:14px 0}
.tlist .num{
  flex:0 0 22px;font-family:var(--serif);font-size:13px;color:var(--gold-soft);
  padding-top:2px;
}
.tlist .t{
  flex:1;font-size:14.5px;line-height:1.7;color:var(--ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .22s var(--ease);
}
.tlist a:hover .t{color:var(--blue)}
.tlist .d{flex:0 0 auto;font-size:12px;color:var(--muted);padding-top:3px}

/* ---------- 图片墙（在线展厅） ---------- */
.gallery{
  display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:14px;
}
.gallery a{
  position:relative;display:block;overflow:hidden;background:#EDEBE6;
  aspect-ratio:1/1;
}
.gallery a:nth-child(1){grid-column:span 2;grid-row:span 2;aspect-ratio:auto}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .9s var(--ease)}
.gallery a:hover img{transform:scale(1.07)}
.gallery .cap{
  position:absolute;left:0;right:0;bottom:0;padding:26px 14px 12px;
  background:linear-gradient(to top,rgba(20,24,28,.72),rgba(20,24,28,0));
  color:#fff;font-size:12.5px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  opacity:0;transform:translateY(6px);transition:all .32s var(--ease);
}
.gallery a:hover .cap{opacity:1;transform:translateY(0)}

/* ---------- 图文交错（艺术访谈） ---------- */
.feature-list{display:grid;gap:0}
.feature-item{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.25fr);gap:48px;
  padding:38px 0;border-bottom:1px solid var(--line-2);align-items:center;
}
.feature-item:first-child{padding-top:8px}
.feature-item:last-child{border-bottom:0}
.feature-item:nth-child(even) .fi-img{order:2}
.feature-item:nth-child(even) .fi-body{order:1}
.fi-img{overflow:hidden;background:#EDEBE6;aspect-ratio:4/3}
.fi-img img{width:100%;height:100%;object-fit:cover;transition:transform .9s var(--ease)}
.feature-item:hover .fi-img img{transform:scale(1.05)}
.fi-body .kicker{
  display:inline-block;margin-bottom:12px;font-size:11px;letter-spacing:.22em;
  color:var(--gold);
}
.fi-body h3{font-size:22px;line-height:1.55}
.fi-body h3 a:hover{color:var(--blue)}
.fi-body .excerpt{
  margin-top:14px;font-size:14px;color:var(--ink-3);line-height:1.95;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.fi-body .meta{margin-top:16px;font-size:12px;color:var(--muted);letter-spacing:.04em}

/* ---------- 非遗查询入口 ---------- */
.banner-fy{
  margin:64px 0 0;padding:46px 52px;background:var(--blue-deep);color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  position:relative;overflow:hidden;
}
.banner-fy::before{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;
  border:1px solid rgba(217,196,155,.28);border-radius:50%;
}
.banner-fy::after{
  content:"";position:absolute;right:20px;bottom:-90px;width:180px;height:180px;
  border:1px solid rgba(217,196,155,.16);border-radius:50%;
}
.banner-fy .bf-txt{position:relative;z-index:1}
.banner-fy .bf-en{
  font-size:10px;letter-spacing:.3em;color:var(--gold-soft);
  text-transform:uppercase;margin-bottom:12px;
}
.banner-fy h2{font-size:26px;letter-spacing:.12em;color:#fff}
.banner-fy p{margin:12px 0 0;font-size:13.5px;color:rgba(255,255,255,.72);line-height:1.9}
.banner-fy .bf-btn{
  position:relative;z-index:1;flex:0 0 auto;display:inline-flex;align-items:center;gap:10px;
  padding:14px 30px;border:1px solid rgba(217,196,155,.55);color:#F0E4CC;
  font-size:13.5px;letter-spacing:.16em;transition:all .28s var(--ease);
}
.banner-fy .bf-btn:hover{background:var(--gold);border-color:var(--gold);color:#fff}
.banner-fy .bf-btn svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.6}

/* ---------- 友链 ---------- */
.flink{padding:52px 0 6px}
.flink .fl-head{
  display:flex;align-items:center;gap:16px;margin-bottom:20px;
  font-size:12px;letter-spacing:.2em;color:var(--muted);text-transform:uppercase;
}
.flink .fl-head::after{content:"";flex:1;height:1px;background:var(--line)}
.flink ul{display:flex;flex-wrap:wrap;gap:10px 26px}
.flink li{font-size:13px;color:var(--ink-3)}
.flink li a{color:var(--ink-3)}
.flink li a:hover{color:var(--blue)}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:56px;border-top:1px solid var(--line);background:var(--paper-soft)}
.site-footer .fmain{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;
  padding:52px 0 40px;
}
.site-footer h4{font-size:14px;letter-spacing:.14em;margin-bottom:16px;color:var(--ink)}
.site-footer .fabout p{font-size:13px;color:var(--ink-3);line-height:1.95;margin:0}
.site-footer .flinks li{margin-bottom:9px}
.site-footer .flinks a{font-size:13px;color:var(--ink-3)}
.site-footer .flinks a:hover{color:var(--blue)}
.site-footer .fcontact li{font-size:13px;color:var(--ink-3);margin-bottom:9px;line-height:1.8}
.site-footer .fmark{
  font-family:var(--serif);font-size:20px;letter-spacing:.2em;color:var(--ink);margin-bottom:14px;
}
.site-footer .fbar{
  border-top:1px solid var(--line);padding:18px 0;font-size:12px;
  color:var(--muted);display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.site-footer .fbar a{color:var(--muted)}
.site-footer .fbar a:hover{color:var(--blue)}

/* ---------- 内页：面包屑与页头 ---------- */
.page-wrap{padding-top:26px}
.crumb{
  font-size:12.5px;color:var(--muted);letter-spacing:.04em;
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--blue)}
.crumb .sep{color:var(--line)}

.page-head{padding:34px 0 30px;border-bottom:1px solid var(--line);margin-bottom:40px}
.page-head .ph-en{
  font-size:10px;letter-spacing:.3em;color:var(--gold);text-transform:uppercase;
  margin-bottom:14px;
}
.page-head h1{font-size:34px;letter-spacing:.08em;line-height:1.4}
.page-head .ph-desc{
  margin-top:14px;font-size:14px;color:var(--ink-3);line-height:1.95;max-width:820px;
}
.page-head .ph-desc:empty{display:none}
.page-head .ph-count{
  margin-top:16px;font-size:12px;color:var(--muted);letter-spacing:.08em;
}

/* ---------- 内页两栏布局 ---------- */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:60px;align-items:start}
.layout .main{min-width:0}

/* ---------- 文章列表 ---------- */
.arch-list{display:grid;gap:0}
.arch-item{
  display:grid;grid-template-columns:230px minmax(0,1fr);gap:28px;
  padding:28px 0;border-bottom:1px solid var(--line-2);align-items:start;
}
.arch-item:first-child{padding-top:0}
.arch-item .ai-img{
  display:block;overflow:hidden;background:#EDEBE6;aspect-ratio:4/3;
}
.arch-item .ai-img img{width:100%;height:100%;object-fit:cover;transition:transform .9s var(--ease)}
.arch-item:hover .ai-img img{transform:scale(1.05)}
.arch-item .ai-body{min-width:0}
.arch-item h3{font-size:19px;line-height:1.6}
.arch-item h3 a:hover{color:var(--blue)}
.arch-item .ai-desc{
  margin-top:10px;font-size:13.5px;color:var(--ink-3);line-height:1.9;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.arch-item .ai-meta{
  margin-top:12px;font-size:12px;color:var(--muted);letter-spacing:.04em;
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
}
.arch-item .ai-meta .cat{
  padding:2px 10px;border:1px solid var(--line);color:var(--ink-3);font-size:11.5px;
}

/* 分页 */
.pager{margin:44px 0 0;display:flex;justify-content:center}
.pager ul{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.pager li a,.pager li span{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:38px;height:38px;padding:0 12px;
  font-size:13px;color:var(--ink-3);border:1px solid var(--line);
  transition:all .22s var(--ease);
}
.pager li a:hover{border-color:var(--blue);color:var(--blue)}
.pager li.active a,.pager li.active span,
.pager li.thisclass{
  background:var(--blue);border-color:var(--blue);color:#fff;
}
.pager li.thisclass{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:38px;height:38px;padding:0 12px;font-size:13px;
}
.pager li.disabled span{color:var(--line);border-color:var(--line-2)}

/* ---------- 侧栏 ---------- */
.sidebar{position:sticky;top:24px}
.side-box{margin-bottom:40px}
.side-box .sb-head{
  display:flex;align-items:center;gap:10px;margin-bottom:16px;
  padding-bottom:10px;border-bottom:1px solid var(--ink);
  font-size:14px;letter-spacing:.14em;color:var(--ink);
  font-family:var(--serif);
}
.side-box .sb-head::before{content:"";width:2px;height:13px;background:var(--blue)}
.side-nav li{border-bottom:1px solid var(--line-2)}
.side-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:11px 2px;font-size:13.5px;color:var(--ink-3);
}
.side-nav a:hover{color:var(--blue);padding-left:6px}
.side-nav a .arrow{color:var(--line);font-size:12px}
.side-rank li{padding:11px 0;border-bottom:1px solid var(--line-2);display:flex;gap:12px}
.side-rank li:last-child{border-bottom:0}
.side-rank .no{
  flex:0 0 20px;font-family:var(--serif);font-size:13px;color:var(--gold-soft);
}
.side-rank .no.hot{color:var(--blue)}
.side-rank a{
  font-size:13.5px;color:var(--ink-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.side-rank a:hover{color:var(--blue)}
.side-pics{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px}
.side-pics a{display:block;overflow:hidden;aspect-ratio:1/1;background:#EDEBE6}
.side-pics img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.side-pics a:hover img{transform:scale(1.07)}
.side-fy{
  padding:24px 22px;background:var(--blue-wash);border:1px solid #E3E9F3;
}
.side-fy h4{font-size:15px;letter-spacing:.1em;margin-bottom:8px;color:var(--blue-deep)}
.side-fy p{font-size:12.5px;color:var(--ink-3);line-height:1.85;margin:0 0 14px}
.side-fy a.go{
  display:inline-block;font-size:12.5px;letter-spacing:.12em;color:var(--blue);
  border-bottom:1px solid var(--blue);padding-bottom:2px;
}

/* ---------- 正文 ---------- */
.article-head{padding-bottom:28px;border-bottom:1px solid var(--line-2);margin-bottom:34px}
.article-head .ah-cat{
  display:inline-block;margin-bottom:16px;padding:3px 12px;
  background:var(--blue-wash);color:var(--blue);font-size:11.5px;letter-spacing:.14em;
}
.article-head h1{font-size:30px;line-height:1.5;letter-spacing:.01em}
.article-head .ah-meta{
  margin-top:20px;display:flex;align-items:center;gap:22px;flex-wrap:wrap;
  font-size:12.5px;color:var(--muted);letter-spacing:.04em;
}
.article-head .ah-meta .dot{width:3px;height:3px;background:var(--line);border-radius:50%}

.article-body{font-size:16.5px;line-height:2;color:var(--ink-2);letter-spacing:.01em}
.article-body>*+*{margin-top:1.5em}
.article-body p{margin:0}
.article-body img{max-width:100%;height:auto;display:block;margin:2em auto}
.article-body h2{
  font-size:21px;margin:2em 0 .8em;padding-left:14px;position:relative;
  color:var(--ink);letter-spacing:.04em;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:2px;background:var(--blue);
}
.article-body h3{font-size:18px;margin:1.8em 0 .7em;color:var(--ink)}
.article-body a{color:var(--blue);border-bottom:1px solid rgba(31,78,140,.3)}
.article-body ul,.article-body ol{margin:1.4em 0;padding-left:1.4em}
.article-body ul li{list-style:disc;margin:.5em 0}
.article-body ol li{list-style:decimal;margin:.5em 0}
.article-body blockquote{
  margin:2em 0;padding:20px 26px;background:var(--paper-soft);
  border-left:2px solid var(--gold-soft);color:var(--ink-2);font-size:15.5px;
  font-family:var(--serif);
}
.article-body blockquote p{margin:0}
.article-body table{width:100%;border-collapse:collapse;font-size:14.5px;margin:2em 0}
.article-body table th,.article-body table td{
  border:1px solid var(--line);padding:10px 14px;text-align:left;
}
.article-body table th{background:var(--paper-soft);font-weight:500}
.article-body iframe{max-width:100%}

/* 上下篇 */
.article-nav{
  margin-top:52px;padding-top:26px;border-top:1px solid var(--line);
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;
}
.article-nav .an-item{min-width:0}
.article-nav .an-label{
  font-size:11.5px;letter-spacing:.18em;color:var(--muted);
  text-transform:uppercase;margin-bottom:8px;
}
.article-nav a{
  font-size:14.5px;color:var(--ink-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.article-nav a:hover{color:var(--blue)}
.article-nav .next{text-align:right}
.article-nav .none{color:var(--muted);font-size:14px}

/* 相关阅读 */
.related{margin-top:56px;padding-top:32px;border-top:1px solid var(--line)}
.related .rel-head{
  display:flex;align-items:center;gap:14px;margin-bottom:24px;
  font-size:14px;letter-spacing:.16em;color:var(--ink);font-family:var(--serif);
}
.related .rel-head::after{content:"";flex:1;height:1px;background:var(--line)}

/* ---------- 单页（关于我们等） ---------- */
.single-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:56px;align-items:start}
.single-nav{border-top:1px solid var(--ink);padding-top:8px}
.single-nav li{border-bottom:1px solid var(--line-2)}
.single-nav a{
  display:block;padding:13px 4px;font-size:14px;color:var(--ink-3);letter-spacing:.04em;
}
.single-nav a:hover{color:var(--blue);padding-left:8px}
.single-nav li.active a{color:var(--blue);font-weight:500}
.single-body h1{font-size:30px;letter-spacing:.06em;margin-bottom:26px}
.single-body .article-body{font-size:16px}

/* ---------- 空状态 ---------- */
.empty{
  padding:80px 0;text-align:center;color:var(--muted);font-size:14px;
  border:1px dashed var(--line);
}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:26px;bottom:34px;width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  background:var(--paper);border:1px solid var(--line);color:var(--ink-3);
  cursor:pointer;opacity:0;visibility:hidden;transition:all .3s var(--ease);z-index:90;
}
.to-top.on{opacity:1;visibility:visible}
.to-top:hover{border-color:var(--blue);color:var(--blue)}
.to-top svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.8}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1180px){
  .main-nav>li>a{padding:0 10px;font-size:14px}
  .main-nav>li>a::after{left:10px;right:10px}
  .layout{grid-template-columns:minmax(0,1fr) 268px;gap:40px}
  .hero-grid{gap:30px}
  .gallery{grid-template-columns:repeat(4,minmax(0,1fr))}
  .gallery a:nth-child(1){grid-column:span 2;grid-row:span 2}
}

@media (max-width:1024px){
  .wrap{padding:0 22px}
  .site-header .wrap{height:82px;gap:18px}
  .main-nav>li>a{line-height:82px;padding:0 8px;font-size:13.5px}
  .main-nav .sub-menu{top:82px}
  .main-nav>li>a::after{bottom:24px}
  .grid.col4{grid-template-columns:repeat(3,minmax(0,1fr))}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .hero-lead .thumb{aspect-ratio:16/9}
  .layout{grid-template-columns:minmax(0,1fr);gap:48px}
  .sidebar{position:static}
  .col3-wrap{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:36px}
  .feature-item{grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:30px}
  .site-footer .fmain{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px}
  .page-head h1{font-size:28px}
  .article-head h1{font-size:27px}
  .section{padding:48px 0 4px}
}

@media (max-width:820px){
  .topbar{display:none}

  /* 页头滚动吸顶：logo 与栏目导航始终停在屏幕顶部 */
  .site-header{
    position:-webkit-sticky;position:sticky;top:0;z-index:120;
    background:var(--paper);
    box-shadow:0 2px 14px -8px rgba(30,34,38,.16);
  }
  .site-header .wrap{height:auto;flex-wrap:wrap;padding-top:11px;padding-bottom:11px;gap:8px}
  .brand img{max-height:42px}
  .main-nav{
    width:100%;overflow-x:auto;justify-content:flex-start;gap:0;
    border-top:1px solid var(--line-2);padding-top:4px;
    -webkit-overflow-scrolling:touch;scrollbar-width:none;
  }
  .main-nav::-webkit-scrollbar{display:none}
  .main-nav>li>a{line-height:44px;padding:0 12px;font-size:13.5px}
  .main-nav>li>a::after{bottom:6px;left:12px;right:12px}
  .main-nav .sub-menu{display:none}
  .search-toggle{width:34px;height:34px;margin-left:0}
  .grid.col4,.grid.col3{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 18px}
  .col3-wrap{grid-template-columns:minmax(0,1fr)}
  .arch-item{grid-template-columns:minmax(0,1fr);gap:14px}
  .arch-item .ai-img{aspect-ratio:16/9}
  .feature-item,.feature-item:nth-child(even) .fi-img,.feature-item:nth-child(even) .fi-body{
    grid-template-columns:minmax(0,1fr);order:0;
  }
  .feature-item{gap:20px}
  .feature-item .fi-img{aspect-ratio:16/9}
  .gallery{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
  .gallery a:nth-child(1){grid-column:span 2;grid-row:span 2}
  .banner-fy{flex-direction:column;align-items:flex-start;padding:34px 26px;gap:22px}
  .banner-fy h2{font-size:21px}
  .article-body{font-size:16px;line-height:1.95}
  .article-nav{grid-template-columns:minmax(0,1fr);gap:20px}
  .article-nav .next{text-align:left}
  .single-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .single-nav{display:flex;flex-wrap:wrap;gap:0 8px;border-top:0;padding-top:0;border-bottom:1px solid var(--line);margin-bottom:8px}
  .single-nav li{border-bottom:0}
  .site-footer .fmain{grid-template-columns:minmax(0,1fr);gap:28px;padding:36px 0 28px}
  .site-footer .fbar{flex-direction:column;align-items:flex-start;gap:8px}
  .sec-head h2{font-size:20px}
  .sec-head .en{display:none}
  .page-head{padding:24px 0 22px;margin-bottom:28px}
  .page-head h1{font-size:24px}
  .article-head h1{font-size:23px}
  .hero-lead h1{font-size:22px}
  .to-top{right:14px;bottom:20px;width:40px;height:40px}
}