:root{
  --bg:#fbfaf8; --card:#ffffff; --ink:#1f2328; --muted:#6b7280; --line:#e8e5df;
  --brand:#b4442a; --brand-soft:#f6ece7; --radius:14px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.8 -apple-system,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;}
a{color:inherit;text-decoration:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
header.site{background:rgba(251,250,248,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.site .bar{display:flex;align-items:center;gap:18px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:.5px}
.logo .dot{width:10px;height:10px;border-radius:3px;background:var(--brand);display:inline-block}
nav.main{margin-left:auto;display:flex;gap:20px;font-size:14px;color:var(--muted)}
nav.main a:hover{color:var(--brand)}
.hero{padding:64px 0 40px;border-bottom:1px solid var(--line)}
.hero h1{font-size:34px;line-height:1.35;margin:0 0 14px;letter-spacing:-.5px}
.hero p{margin:0;color:var(--muted);max-width:640px;font-size:16.5px}
.hero .kicker{display:inline-block;font-size:13px;color:var(--brand);background:var(--brand-soft);
  padding:4px 10px;border-radius:999px;margin-bottom:16px}
.grid{display:grid;grid-template-columns:2fr 1fr;gap:36px;padding:40px 0 72px}
.list{display:flex;flex-direction:column;gap:2px}
.item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 24px;transition:.18s ease;display:block}
.item+.item{margin-top:14px}
.item:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(31,35,40,.07);border-color:#dcd6cc}
.item .cat{font-size:12.5px;color:var(--brand);letter-spacing:.3px}
.item h3{margin:8px 0 8px;font-size:19px;line-height:1.5}
.item p{margin:0;color:var(--muted);font-size:14.5px}
.item .meta{margin-top:12px;font-size:12.5px;color:#9aa1ab}
aside .card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 22px;margin-bottom:16px}
aside h4{margin:0 0 12px;font-size:14px;letter-spacing:.5px;color:#374151}
aside ul{margin:0;padding-left:18px;color:var(--muted);font-size:14px}
aside li{margin:7px 0}
.tag{display:inline-block;font-size:12px;color:var(--muted);background:#f3f1ec;border-radius:999px;padding:3px 9px;margin-right:6px}
article.post{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:44px 48px;margin:36px 0 0}
article.post h1{font-size:29px;line-height:1.45;margin:10px 0 14px}
article.post .lead{color:var(--muted);font-size:16px;margin:0 0 26px}
article.post h2{font-size:20px;margin:34px 0 12px;padding-left:12px;border-left:3px solid var(--brand)}
article.post p{margin:12px 0;color:#2b3137}
.backlink{display:inline-block;margin:26px 0 0;color:var(--brand);font-size:14px}
footer.site{border-top:1px solid var(--line);background:#fff;color:var(--muted);font-size:13.5px}
footer .inner{display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;padding:28px 0}
footer a:hover{color:var(--brand)}
.page{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:40px 44px;margin:36px 0}
.page h1{font-size:26px;margin:0 0 18px}
.page p{margin:12px 0;color:#2b3137}
@media (max-width:860px){
  .grid{grid-template-columns:1fr}
  .hero h1{font-size:26px}
  article.post,.page{padding:26px 22px}
  nav.main{display:none}
}


/* 解决方案库入口与企微 */
.solution-entry-wrap{padding-top:28px}
.solution-entry{display:block;background:linear-gradient(135deg,#fff 0%,#fdf7f3 100%);border:1px solid var(--line);
  border-radius:var(--radius);padding:24px 28px;box-shadow:0 8px 24px rgba(31,35,40,.05);transition:.18s ease}
.solution-entry:hover{transform:translateY(-2px);border-color:#d9c8bf;box-shadow:0 14px 32px rgba(31,35,40,.08)}
.solution-entry .se-kicker{display:block;font-size:11px;letter-spacing:.14em;color:var(--brand);margin-bottom:7px}
.solution-entry strong{display:block;font-size:22px;line-height:1.4;color:var(--ink);margin-bottom:5px}
.solution-entry .se-desc{display:block;font-size:14px;line-height:1.7;color:var(--muted);max-width:46em}
.solution-entry .se-arrow{display:inline-block;margin-top:12px;color:var(--brand);font-size:14px;font-weight:600}
.wecom-inline{color:var(--brand);font-weight:600;text-decoration:none;border-bottom:1px solid rgba(180,68,42,.3);padding-bottom:2px}
.wecom-inline:hover{border-color:var(--brand)}
@media (max-width:860px){.solution-entry{padding:20px}.solution-entry strong{font-size:19px}}