/* ============ 站群前端样式 v2 ============ */
:root{
  --bg:#f6f7f9;
  --card:#ffffff;
  --fg:#16181d;
  --muted:#6b7280;
  --pri:#2563eb;
  --pri-soft:#eff4ff;
  --bd:#e7e9ee;
  --r:16px;
  --shadow:0 1px 2px rgba(16,24,40,.04),0 8px 24px -12px rgba(16,24,40,.12);
  --shadow-h:0 2px 4px rgba(16,24,40,.05),0 18px 36px -16px rgba(16,24,40,.22);
  --max:1080px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--fg);
  font:16px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--pri);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:20;
  background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--bd);
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--fg)}
.brand:hover{text-decoration:none}
.brand .logo{
  width:30px;height:30px;border-radius:9px;display:grid;place-items:center;color:#fff;font-size:15px;font-weight:800;
  background:linear-gradient(135deg,#3b82f6,#6366f1);box-shadow:0 4px 12px -4px rgba(59,130,246,.6);
}
.site-header nav a{color:var(--muted);font-size:14px;margin-left:22px}
.site-header nav a:hover{color:var(--pri);text-decoration:none}

/* ---------- hero ---------- */
.hero{padding:52px 0 8px;text-align:center}
.hero h1{font-size:32px;line-height:1.3;margin:0 0 12px;letter-spacing:-.02em}
.hero p{margin:0 auto;max-width:560px;color:var(--muted);font-size:15px}
.hero .pills{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:20px}
.hero .pills span{
  font-size:13px;color:var(--pri);background:var(--pri-soft);
  padding:6px 14px;border-radius:999px;font-weight:500;
}

/* ---------- card grid ---------- */
.grid{
  display:grid;gap:16px;margin:32px 0 8px;
  grid-template-columns:repeat(3,1fr);
}
.card{
  display:block;background:var(--card);border:1px solid var(--bd);border-radius:var(--r);
  padding:20px 20px 18px;box-shadow:var(--shadow);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  color:var(--fg);position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-h);border-color:#d7dcea;text-decoration:none}
.card .k{
  display:inline-block;font-size:12px;color:var(--pri);background:var(--pri-soft);
  padding:2px 9px;border-radius:8px;margin-bottom:12px;font-weight:600;
}
.card h3{margin:0 0 8px;font-size:17px;line-height:1.45;font-weight:650;letter-spacing:-.01em}
.card p{margin:0;color:var(--muted);font-size:13.5px;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card .arrow{position:absolute;right:18px;bottom:16px;color:#c3c9d6;font-size:16px;transition:.18s}
.card:hover .arrow{color:var(--pri);transform:translateX(3px)}

/* ---------- article ---------- */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding:26px 0 14px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--pri)}
.crumb span.sep{color:#c7ccd8}

.post{
  background:var(--card);border:1px solid var(--bd);border-radius:var(--r);
  padding:38px 44px 44px;box-shadow:var(--shadow);margin-bottom:26px;
}
.post h1{font-size:30px;line-height:1.35;margin:0 0 16px;letter-spacing:-.02em}
.post .meta{
  display:flex;gap:18px;flex-wrap:wrap;align-items:center;
  color:var(--muted);font-size:13px;padding-bottom:22px;margin-bottom:26px;border-bottom:1px solid var(--bd);
}
.post .meta .dot{width:4px;height:4px;border-radius:50%;background:#cfd5e1}

.content{font-size:16.5px;line-height:1.95;color:#242933}
.content p{margin:0 0 20px}
.content h2{
  font-size:20px;margin:38px 0 14px;padding-left:13px;line-height:1.4;
  border-left:4px solid var(--pri);letter-spacing:-.01em;
}
.content h3{font-size:17px;margin:28px 0 10px}
.content ul,.content ol{padding-left:22px;margin:0 0 20px}
.content li{margin:7px 0}
.content blockquote{margin:22px 0;padding:14px 20px;background:var(--pri-soft);border-left:3px solid #bfd3ff;border-radius:0 10px 10px 0;color:#374151}
.content strong{font-weight:650}
.content a{word-break:break-all}

/* ---------- related ---------- */
.related{margin:0 0 40px}
.related h3{font-size:15px;color:var(--muted);font-weight:600;margin:0 0 14px;letter-spacing:.02em}
.related ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.related li a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  background:var(--card);border:1px solid var(--bd);border-radius:11px;
  padding:13px 16px;color:var(--fg);font-size:14px;
  transition:.16s;box-shadow:0 1px 2px rgba(16,24,40,.03);
}
.related li a:hover{border-color:#c9d4ec;box-shadow:var(--shadow);text-decoration:none;transform:translateY(-1px)}
.related li a::after{content:"→";color:#c3c9d6;flex:0 0 auto}
.related li a:hover::after{color:var(--pri)}

/* 兼容旧 .zq-rel 结构 */
.zq-rel{margin:34px 0 8px}
.zq-rel h3{font-size:15px;color:var(--muted);margin:0 0 14px}
.zq-rel ul{list-style:none;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.zq-rel li a{display:flex;justify-content:space-between;gap:10px;background:var(--bg);border:1px solid var(--bd);border-radius:10px;padding:12px 15px;color:var(--fg);font-size:14px}
.zq-rel li a:hover{text-decoration:none;border-color:#c9d4ec}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--bd);padding:28px 0 40px;color:var(--muted);font-size:13px;text-align:center;margin-top:20px}
.site-footer a{color:var(--muted)}

/* 旧样式兼容 */
.zq-foot{margin-top:40px;padding-top:16px;border-top:1px solid var(--bd);color:var(--muted);font-size:13px}

/* ---------- responsive ---------- */
@media (max-width:860px){
  .grid{grid-template-columns:repeat(2,1fr)}
  .post{padding:26px 22px 30px}
  .post h1{font-size:24px}
  .hero h1{font-size:26px}
  .hero{padding:34px 0 4px}
}
@media (max-width:560px){
  .grid{grid-template-columns:1fr;gap:12px}
  .related ul,.zq-rel ul{grid-template-columns:1fr}
  .post h1{font-size:21px}
  .content{font-size:16px}
  .site-header nav a{margin-left:14px;font-size:13px}
}

/* ---------- 分页 ---------- */
.pager{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:34px 0 10px}
.pager a{
  min-width:38px;height:38px;padding:0 13px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--card);border:1px solid var(--bd);border-radius:10px;color:var(--fg);font-size:14px;
  transition:.16s;
}
.pager a:hover{border-color:#c9d4ec;box-shadow:var(--shadow);text-decoration:none}
.pager a.on{background:var(--pri);border-color:var(--pri);color:#fff;font-weight:600}

/* ---------- 广告位 ---------- */
.zq-ad{position:relative;margin:22px 0}
.zq-ad img{display:block;width:100%;border-radius:12px}
.zq-ad > a{display:block}
.ad-tag{position:absolute;top:8px;left:8px;background:rgba(0,0,0,.45);color:#fff;font-size:11px;line-height:1;padding:3px 7px;border-radius:6px;z-index:2;letter-spacing:.05em}
.ad-card{display:block;background:var(--card);border:1px dashed #d5dbe8;border-radius:var(--r);padding:20px;box-shadow:var(--shadow)}
.ad-card .k{display:inline-block;font-size:12px;color:#b0791e;background:#fff6e5;padding:2px 9px;border-radius:8px;margin-bottom:12px;font-weight:600}
.ad-card h3{margin:0 0 10px;font-size:16px}