/* base.css — 站群共享样式：所有模板统一继承 :root CSS 变量（模板配色由 core.php 注入） */
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6;font-size:15px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block;border-radius:calc(var(--radius) * .6)}
.wrap{max-width:1180px;margin:0 auto;padding:0 18px}
.mt{margin-top:34px}
.center{text-align:center}
.muted{color:var(--muted)}
h1,h2,h3{line-height:1.3}

/* 导航 */
.nav{position:sticky;top:0;z-index:50;background:var(--card);border-bottom:1px solid rgba(0,0,0,.06);backdrop-filter:blur(8px)}
.nav-in{display:flex;align-items:center;gap:18px;height:62px}
.logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:19px;color:var(--primary)}
.logo .dot{width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:0 0 0 4px color-mix(in srgb,var(--primary) 18%,transparent)}
.nav .links{display:flex;gap:18px;margin-left:8px;flex:1;flex-wrap:wrap}
.nav .links a{color:var(--muted);font-weight:600;font-size:14px;padding:6px 2px;border-bottom:2px solid transparent}
.nav .links a:hover{color:var(--primary);border-color:var(--primary)}
.btn{display:inline-block;padding:10px 18px;border-radius:calc(var(--radius) * .7);font-weight:700;font-size:14px;
  background:var(--primary);color:#fff;transition:.18s;box-shadow:0 4px 14px color-mix(in srgb,var(--primary) 30%,transparent)}
.btn:hover{transform:translateY(-1px);background:var(--primary2)}
.nav .btn{padding:8px 16px}

/* 头部横幅 */
.banner .slide a{display:block;border-radius:var(--radius);overflow:hidden;box-shadow:0 10px 30px rgba(0,0,0,.08)}
.banner img{width:100%;height:340px;object-fit:cover}
.banner .slide{padding-top:18px}

/* 区块标题 */
.sec-h{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:16px;border-left:4px solid var(--primary);padding-left:12px}
.sec-h h2{font-size:21px}
.sec-h a{color:var(--primary);font-weight:700;font-size:14px}

/* 网格 */
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

/* 卡片 */
.card{background:var(--card);border-radius:var(--radius);padding:18px;box-shadow:0 6px 20px rgba(0,0,0,.05);transition:.18s;border:1px solid rgba(0,0,0,.04)}
.card:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(0,0,0,.09)}
.card.art img{height:160px;object-fit:cover;margin-bottom:12px}
.card.art h3{font-size:16px;margin-bottom:6px}
.card.art p{color:var(--muted);font-size:13px}
.card.art .meta{display:block;margin-top:8px;color:var(--muted);font-size:12px}
.card.feat .emo{font-size:30px;margin-bottom:8px}
.card.feat h3{font-size:16px;margin-bottom:6px;color:var(--primary)}
.card.feat p{color:var(--muted);font-size:13px}
.card.faq h3{font-size:15px;margin-bottom:6px;color:var(--primary)}
.card.faq p{color:var(--muted);font-size:13px}
.card.tier{text-align:center}
.card.tier .lv{font-size:22px;font-weight:800;color:var(--primary)}
.card.tier .big{font-size:20px;font-weight:800;margin:8px 0;color:var(--text)}
.card.tier p{color:var(--muted);font-size:13px}

/* CTA */
.cta{border-radius:var(--radius);padding:30px 26px;color:#fff;text-align:center}
.cta-t{font-size:22px;font-weight:800;margin-bottom:16px}
.cta-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.btn-w{background:#fff;color:var(--primary2)}
.btn-w:hover{background:#f1f5f9}
.btn-o{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.7);box-shadow:none}
.btn-o:hover{background:rgba(255,255,255,.15)}

/* 统计条 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;background:var(--card);border-radius:var(--radius);padding:22px;box-shadow:0 6px 20px rgba(0,0,0,.05)}
.st{text-align:center}
.st b{display:block;font-size:26px;font-weight:800;color:var(--primary)}
.st span{color:var(--muted);font-size:13px}

/* 资讯/博客头图 */
.hero-blog{text-align:center;padding:34px 0}
.hero-blog h1{font-size:30px;font-weight:800;color:var(--primary);margin-bottom:8px}
.hero-min{padding:44px 0;text-align:center}
.hero-min h1{font-size:32px;font-weight:800;color:var(--accent);margin-bottom:12px}

/* 文章详情 */
.post{max-width:840px;padding:30px 18px}
.post h1{font-size:26px;margin-bottom:10px}
.post .meta{margin-bottom:18px;font-size:13px}
.post .cover{width:100%;border-radius:var(--radius);margin-bottom:18px}
.post .content{font-size:16px;line-height:1.9;color:var(--text)}
.post .content img{max-width:100%;height:auto;margin:14px 0;border-radius:calc(var(--radius) * .6)}

/* 页脚 */
.foot{margin-top:48px;background:var(--card);border-top:1px solid rgba(0,0,0,.06);padding:34px 0 0}
.foot-in{display:grid;grid-template-columns:1fr 1fr .8fr;gap:24px}
.foot h4{font-size:15px;margin-bottom:12px;color:var(--primary)}
.foot a,.foot p{display:block;color:var(--muted);font-size:13px;margin-bottom:6px}
.foot a:hover{color:var(--primary)}
.foot .qr{text-align:center}
.foot .qr img{width:120px;height:120px;object-fit:contain;margin:0 auto 8px;background:#fff;padding:6px;border-radius:10px}
.foot .qr p{text-align:center}
.copy{margin-top:24px;padding:16px 0;text-align:center;color:var(--muted);font-size:12px;border-top:1px solid rgba(0,0,0,.06)}

/* 深色（premium / 极简高端）变体 */
.nav-dark{background:#0b1020;border-bottom:1px solid rgba(255,255,255,.08)}
.nav-dark .links a{color:#94a3b8}
.nav-dark .links a:hover{color:var(--accent)}
.nav-dark .logo{color:#e8edf7}
.foot-dark{background:#0b1020;border-top:1px solid rgba(255,255,255,.08)}
.foot-dark h4{color:var(--accent)}
.foot-dark a,.foot-dark p{color:#94a3b8}
.foot-dark .copy{border-top:1px solid rgba(255,255,255,.08)}

/* 响应式 */
@media(max-width:920px){
  .g4{grid-template-columns:repeat(2,1fr)}
  .foot-in{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .g2,.g3,.g4{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .nav .links{display:none}
  .banner img{height:180px}
  .foot-in{grid-template-columns:1fr}
  .cta-btns .btn{width:100%}
}