/* 华夏易经研究网 — scholarly portal style */
:root{
  --paper:#faf7ef;
  --card:#fffdf7;
  --ink-green:#245c4c;
  --ink-green-dark:#1a4437;
  --link-green:#2e7d5b;
  --gold:#b98a2f;
  --gold-light:#e9dab4;
  --footer-bg:#1f2a26;
  --text:#2e2c24;
  --muted:#6f685a;
  --line:#e2dcc6;
  --serif:"Noto Serif SC","Songti SC","STSong","SimSun",serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{font-size:16px;}
body{
  background:var(--paper);
  color:var(--text);
  font-family:var(--sans);
  line-height:1.75;
  -webkit-text-size-adjust:100%;
}
a{color:var(--link-green);text-decoration:none;}
a:hover{color:var(--ink-green-dark);text-decoration:underline;}
.container{max-width:1080px;margin:0 auto;padding:0 20px;}

/* ---- top channel bar ---- */
.topbar{background:var(--ink-green-dark);color:#d9e6dd;font-size:12px;}
.topbar-inner{display:flex;flex-wrap:wrap;align-items:center;gap:2px 14px;padding:6px 20px;}
.topbar-label{color:var(--gold-light);letter-spacing:2px;}
.topbar a{color:#d9e6dd;}
.topbar a:hover{color:#fff;}

/* ---- header ---- */
.site-header{background:var(--paper);border-bottom:3px double var(--gold);}
.header-inner{display:flex;align-items:center;gap:18px;padding:26px 20px;}
.logo{display:flex;align-items:center;gap:16px;color:var(--ink-green);}
.logo:hover{text-decoration:none;color:var(--ink-green);}
.seal{
  width:64px;height:64px;flex:0 0 64px;
  border:2px solid var(--gold);border-radius:6px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:36px;color:var(--ink-green);
  background:var(--card);
}
.logo-title{display:block;font-family:var(--serif);font-size:32px;font-weight:700;letter-spacing:6px;}
.logo-tag{display:block;font-size:13px;letter-spacing:8px;color:var(--muted);margin-top:6px;}

/* ---- main nav ---- */
.mainnav{background:var(--ink-green);}
.mainnav ul{list-style:none;display:flex;flex-wrap:wrap;}
.mainnav li{margin:0;}
.mainnav a{
  display:block;padding:12px 18px;color:#f2f7f3;font-size:15px;letter-spacing:2px;
}
.mainnav a:hover{background:var(--ink-green-dark);color:#fff;text-decoration:none;}
.mainnav li.current a{background:var(--ink-green-dark);color:var(--gold-light);box-shadow:inset 0 -3px 0 var(--gold);}

/* ---- breadcrumb ---- */
.crumb{font-size:13px;color:var(--muted);padding:18px 0 4px;}
.crumb a{color:var(--link-green);}

/* ---- page titles ---- */
.page-title{
  font-family:var(--serif);font-size:28px;color:var(--ink-green);
  letter-spacing:4px;margin:10px 0 6px;padding-bottom:10px;
  border-bottom:2px solid var(--gold-light);
}
.page-intro{color:var(--muted);font-size:14px;margin-bottom:18px;}

/* ---- search ---- */
.search-sec{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:22px;margin:26px 0;}
.search-sec h2{font-family:var(--serif);font-size:20px;color:var(--ink-green);letter-spacing:4px;margin-bottom:12px;}
#site-search{
  width:100%;max-width:560px;padding:11px 14px;font-size:15px;
  border:1px solid var(--line);border-radius:6px;background:#fff;font-family:var(--sans);
}
#site-search:focus{outline:2px solid var(--gold-light);border-color:var(--gold);}
#search-results{margin-top:16px;}
#search-results h3{font-family:var(--serif);font-size:17px;color:var(--ink-green);margin-bottom:10px;}
.no-result{color:var(--muted);}

/* ---- category sections on homepage ---- */
.cat-sec{margin:30px 0;}
.cat-sec-head{
  display:flex;align-items:baseline;justify-content:space-between;
  border-bottom:2px solid var(--ink-green);padding-bottom:8px;margin-bottom:14px;
}
.cat-sec-head h2{font-family:var(--serif);font-size:22px;letter-spacing:4px;}
.cat-sec-head h2 a{color:var(--ink-green);}
.cat-sec-head .more{font-size:13px;color:var(--muted);letter-spacing:1px;}

/* ---- article link lists ---- */
.art-list{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:10px 22px;}
.art-list.cols-3{grid-template-columns:repeat(3,1fr);}
.art-list.cols-2{grid-template-columns:repeat(2,1fr);}
.art-list li{
  padding:9px 4px 9px 20px;position:relative;
  border-bottom:1px dotted var(--line);font-size:15px;
}
.art-list li::before{
  content:"◆";position:absolute;left:2px;top:11px;font-size:10px;color:var(--gold);
}
.art-list a{color:var(--text);}
.art-list a:hover{color:var(--link-green);}
.art-list .art-cat{font-size:12px;color:var(--muted);margin-left:8px;}

/* ---- article page ---- */
.narrow{max-width:820px;}
.article{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:34px 36px;margin:14px 0 20px;}
.article h1{
  font-family:var(--serif);font-size:27px;color:var(--ink-green);
  letter-spacing:3px;text-align:center;margin-bottom:8px;line-height:1.5;
}
.article .meta{text-align:center;font-size:13px;color:var(--muted);margin-bottom:22px;padding-bottom:16px;border-bottom:1px solid var(--line);}
.article .meta span{margin:0 10px;}
.article .content p{margin:0 0 1.1em;text-align:justify;font-size:16px;line-height:2;}
.article .content h2{
  font-family:var(--serif);font-size:20px;color:var(--ink-green);letter-spacing:2px;
  margin:1.6em 0 .7em;padding-left:12px;border-left:4px solid var(--gold);
}
.divider{text-align:center;color:var(--gold);letter-spacing:12px;margin:26px 0;font-size:14px;}
.prevnext{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:14px;margin:6px 0 14px;
}
.prevnext .none{color:var(--muted);}
.backcat{margin:4px 0 34px;font-size:14px;}

/* ---- 64 gua table ---- */
.gua-table{width:100%;border-collapse:collapse;margin:14px 0 22px;font-size:15px;background:var(--card);}
.gua-table caption{
  font-family:var(--serif);font-size:19px;color:var(--ink-green);letter-spacing:4px;
  padding:10px 0;caption-side:top;
}
.gua-table th,.gua-table td{border:1px solid var(--line);padding:9px 6px;text-align:center;}
.gua-table th{background:var(--ink-green);color:#f2f7f3;font-weight:normal;letter-spacing:2px;}
.gua-table td .num{display:block;font-size:12px;color:var(--muted);}
.gua-table td .nm{font-family:var(--serif);font-size:17px;color:var(--ink-green);}

/* ---- about ---- */
.about-box{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:30px 32px;margin:14px 0 40px;}
.about-box p{margin-bottom:1.1em;text-align:justify;line-height:2;}

/* ---- footer ---- */
.site-footer{background:var(--footer-bg);color:#b9c4bc;margin-top:44px;}
.foot-inner{padding:30px 20px 24px;}
.foot-cats{display:flex;flex-wrap:wrap;gap:6px 20px;font-size:14px;margin-bottom:14px;}
.foot-cats a{color:#d9e6dd;}
.foot-cats a:hover{color:#fff;}
.foot-tag{font-family:var(--serif);letter-spacing:6px;color:var(--gold-light);font-size:14px;margin-bottom:8px;}
.copy{font-size:13px;color:#8fa096;}

/* ---- responsive ---- */
@media (max-width:900px){
  .art-list{grid-template-columns:repeat(2,1fr);}
  .art-list.cols-3{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:600px){
  .header-inner{padding:20px;}
  .seal{width:52px;height:52px;flex-basis:52px;font-size:30px;}
  .logo-title{font-size:24px;letter-spacing:4px;}
  .logo-tag{font-size:11px;letter-spacing:5px;}
  .mainnav a{padding:10px 12px;font-size:14px;letter-spacing:1px;}
  .art-list,.art-list.cols-3,.art-list.cols-2{grid-template-columns:1fr;}
  .article{padding:24px 20px;}
  .article h1{font-size:23px;}
  .gua-table{font-size:13px;}
  .gua-table td .nm{font-size:15px;}
  .topbar-inner{gap:2px 10px;}
}