:root{
  --ink:#1f1b16; --ink2:#4a443c; --ink3:#8a8178;
  --line:#eae3d8; --bg:#fbf8f3; --card:#fff;
  --brand:#b4441f; --brand2:#d98c1f; --gold:#c9a227;
  --maxw:920px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
html,body{overflow-x:hidden}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 18px}

/* 顶栏 */
.top{position:sticky;top:0;z-index:20;background:rgba(251,248,243,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:58px}
.brand{display:flex;align-items:center;gap:9px}
.seal{width:32px;height:32px;border-radius:6px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;
  font-family:"Songti SC","Noto Serif SC",serif;font-size:19px;font-weight:700;box-shadow:0 2px 6px rgba(180,68,31,.28)}
.bn{display:flex;flex-direction:column;line-height:1.15;font-size:16px;font-weight:700;letter-spacing:.02em}
.bn small{font-size:10px;font-weight:400;color:var(--ink3);letter-spacing:.14em}
nav{display:flex;gap:16px;font-size:14px}
nav a{color:var(--ink2);padding:4px 0;border-bottom:2px solid transparent}
nav a.on{color:var(--brand);border-bottom-color:var(--brand);font-weight:600}

/* 首页 hero */
.hero{background:linear-gradient(160deg,#fff6ea 0%,#fdf3e7 45%,#fbf8f3 100%);border-bottom:1px solid var(--line);padding:46px 0 40px;text-align:center}
.hero h1{margin:0;font-family:"Songti SC","Noto Serif SC",serif;font-size:40px;letter-spacing:.16em;font-weight:700;color:var(--brand)}
.hero .hs{margin:12px 0 0;color:var(--ink2);letter-spacing:.18em;font-size:13px}
.hbtns{display:flex;gap:12px;justify-content:center;margin-top:26px;flex-wrap:wrap}
.btn{display:inline-block;padding:10px 24px;border-radius:999px;font-size:15px;font-weight:600;transition:.2s}
.btn.main{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(180,68,31,.22)}
.btn.main:hover{background:#9c3819}
.btn.ghost{border:1px solid var(--brand2);color:var(--brand)}

/* 区块标题 */
.sh{display:flex;align-items:baseline;justify-content:space-between;margin:38px 0 16px}
.sh h2{margin:0;font-family:"Songti SC","Noto Serif SC",serif;font-size:21px;letter-spacing:.06em}
.sh h2::before{content:"";display:inline-block;width:4px;height:18px;background:var(--brand2);border-radius:2px;margin-right:9px;vertical-align:-2px}
.more{font-size:13px;color:var(--brand)}

/* 卡片 */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;padding-bottom:10px}
/* 三列分组布局：左=陈氏宗亲，中=互动云+智界探索者，右=深圳陈氏 */
.cols{display:flex;gap:16px;align-items:flex-start;padding-bottom:10px}
.gcol{flex:1;display:flex;flex-direction:column;gap:16px;min-width:0}
@media (max-width:760px){.cols{flex-direction:column}.gcol{width:100%}}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;
  transition:transform .18s,box-shadow .18s}
.card:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(31,27,22,.08)}
/* 封面按原图比例完整显示，不再裁边（原图 900×383 / 1200×800 两种，套 16:9 会切掉左右标题） */
.cc{background:#f2ece2;overflow:hidden;line-height:0}
.cc img{width:100%;height:auto;display:block}
.cb{padding:14px 15px 16px;display:flex;flex-direction:column;gap:8px;flex:1}
.tag{align-self:flex-start;font-size:11px;padding:2px 9px;border-radius:999px;font-weight:600;letter-spacing:.04em}
.cb h3{margin:0;font-size:16px;line-height:1.5;font-weight:700;color:var(--ink)}
.cs{margin:0;font-size:13px;color:var(--ink3);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cd{margin-top:auto;font-size:12px;color:#b3aa9e}

/* 列表页 */
.list-page{padding-top:28px}
.pt{font-family:"Songti SC","Noto Serif SC",serif;font-size:27px;margin:0 0 6px;letter-spacing:.08em}
.ps{margin:0 0 22px;color:var(--ink3);font-size:13px}

/* 文章页 */
.article{padding-top:24px;max-width:760px}
.crumb{font-size:12px;color:var(--ink3);margin:0 0 10px}
.crumb a{color:var(--brand)}
.article h1{font-family:"Songti SC","Noto Serif SC",serif;font-size:26px;line-height:1.45;margin:0 0 12px;letter-spacing:.01em}
.meta{display:flex;align-items:center;gap:10px;margin:0 0 20px;font-size:12px;color:var(--ink3);flex-wrap:wrap}
.share{display:inline-flex;align-items:center;gap:8px;flex-wrap:wrap}
.share .st{font-size:12.5px;color:var(--ink2)}
.sb{font-size:12px;color:var(--brand);border:1px solid var(--line);border-radius:999px;padding:2px 10px;background:#fff;text-decoration:none;cursor:pointer}
.sb:hover{background:var(--brand);border-color:var(--brand);color:#fff}
#shareToast{position:fixed;left:50%;bottom:36px;transform:translateX(-50%);background:#333;color:#fff;font-size:13px;padding:8px 16px;border-radius:8px;opacity:0;pointer-events:none;transition:opacity .3s;z-index:99;max-width:86vw;text-align:center}
#shareToast.on{opacity:1}
.hero{border-radius:12px;overflow:hidden;margin:0 0 24px;border:1px solid var(--line)}
.body{font-size:16.5px;line-height:1.9;color:#2a2620}
.body p{margin:0 0 16px}
.body h2{font-family:"Songti SC","Noto Serif SC",serif;font-size:20px;margin:30px 0 12px;padding-left:10px;border-left:4px solid var(--gold);line-height:1.4}
.body h3{font-size:17px;margin:22px 0 10px}
.body blockquote{margin:18px 0;padding:12px 16px;background:#f6f1e6;border-left:3px solid var(--brand2);border-radius:0 8px 8px 0;color:var(--ink2)}
.body blockquote p{margin:6px 0}
.body figure{margin:18px 0}
.body figure img{border-radius:10px;border:1px solid var(--line)}
.body hr{border:none;border-top:1px dashed var(--line);margin:26px 0}
.body code{background:#f2ece2;padding:1px 6px;border-radius:4px;font-size:14px}
.body .li{padding-left:18px;position:relative}
.body .li::before{content:"·";position:absolute;left:6px;color:var(--brand2);font-weight:700}

/* CTA */
.cta{margin:34px 0 0;padding:22px 20px;background:linear-gradient(150deg,#fff6ea,#fdf0e2);border:1px solid #f0dcc0;border-radius:14px;text-align:center}
.ctat{margin:0 0 6px;font-weight:700;font-size:16px;color:var(--brand)}
.ctas{margin:0 0 14px;font-size:13px;color:var(--ink2);line-height:1.8}
.qr{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.qbox{width:130px;min-height:130px;padding:8px 6px;box-sizing:border-box;border:1px dashed #d9c3a3;border-radius:10px;background:#fff;display:flex;flex-direction:column;
  align-items:center;justify-content:center;font-size:13px;color:var(--ink3);line-height:1.5;text-align:center}
.qbox small{font-size:10px;color:#b9b0a4}
.qbox img{width:104px;height:104px;object-fit:contain;border-radius:6px}
.qbox b{font-size:12px;color:var(--ink);font-weight:600;margin-top:4px}
.qbox.qtodo{border-style:dashed;color:#b9b0a4}

/* 相关 */
.rel{margin:30px 0 40px}
.rt{font-size:13px;color:var(--ink3);margin:0 0 10px;letter-spacing:.1em}
.ri{display:flex;gap:12px;padding:12px 0;border-top:1px solid var(--line);font-size:14px}
.rd{color:#b3aa9e;flex:0 0 82px;font-size:12px;padding-top:2px}
.rn{color:var(--ink);line-height:1.6}
.ri:hover .rn{color:var(--brand)}

/* band */
.band{margin:44px 0 0;padding:36px 0;background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);text-align:center}
.band h2{margin:0 0 18px;font-family:"Songti SC","Noto Serif SC",serif;font-size:20px;letter-spacing:.05em}
.two{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.ti{flex:1 1 260px;max-width:340px;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:16px;text-align:left}
.ti b{display:block;font-size:15px;color:var(--brand);margin-bottom:6px}
.ti span{font-size:13px;color:var(--ink2);line-height:1.7}
.bt{margin:22px 0 0}

/* 页脚 */
.foot{margin-top:46px;padding:26px 0 34px;background:#f6f1e8;border-top:1px solid var(--line);text-align:center}
.fbrand{margin:0 0 10px;font-family:"Songti SC","Noto Serif SC",serif;letter-spacing:.2em;color:var(--brand);font-size:14px}
.flinks{display:flex;gap:16px;justify-content:center;font-size:13px;color:var(--ink2);margin:0 0 10px;flex-wrap:wrap}
.fnote{margin:0;font-size:11.5px;color:#a79e91;line-height:1.7}
.ficp{margin:10px 0 0;font-size:12px;color:#a79e91;line-height:1.7}
.ficp a{color:#a79e91;text-decoration:none}
.ficp a:hover{color:var(--brand);text-decoration:underline}

/* 关于页 */
.doc{padding-top:30px;max-width:760px}
.doc h1{font-family:"Songti SC","Noto Serif SC",serif;font-size:26px;letter-spacing:.08em;margin:0 0 18px}
.doc h2{font-size:18px;margin:28px 0 10px;padding-left:10px;border-left:4px solid var(--gold)}
.doc p{margin:0 0 14px;color:#2a2620}
.doc ul{padding-left:20px;color:#2a2620}
.doc li{margin:6px 0}

@media (max-width:520px){
  .hero{padding:34px 0 30px}
  .hero h1{font-size:32px}
  .article h1{font-size:22px}
  .body{font-size:16px}
  .bn{font-size:15px}
  /* 导航改为横向滚动，避免 5 个菜单挤成两行 */
  .top{overflow:hidden}
  .top .wrap{height:auto;min-height:52px;flex-wrap:wrap;padding-top:8px;padding-bottom:8px}
  .brand{flex:1 0 auto}
  nav{
    order:3;width:100%;gap:14px;font-size:13px;
    overflow-x:auto;overflow-y:hidden;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:none;padding-bottom:2px;
  }
  nav::-webkit-scrollbar{display:none}
  nav a{white-space:nowrap;flex:0 0 auto}
  .seal{width:34px;height:34px;font-size:17px}
  .bn small{display:none}
}