/* Article-page global shell: navbar + breadcrumb (self-contained, light theme) */
.art-nav{position:sticky;top:0;z-index:900;background:rgba(255,255,255,.92);backdrop-filter:blur(16px) saturate(180%);-webkit-backdrop-filter:blur(16px) saturate(180%);border-bottom:1px solid #e6ecf3;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;}
.art-nav .an-inner{max-width:1080px;margin:0 auto;padding:10px 20px;display:flex;align-items:center;gap:18px;}
.art-nav .an-logo{display:flex;align-items:center;gap:9px;flex:none;text-decoration:none;color:#0F2B5B;font-weight:800;font-size:17px;letter-spacing:.3px;}
.art-nav .an-logo img{height:28px;width:auto;display:block;}
.art-nav .an-logo span{white-space:nowrap;}
.art-nav .an-links{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1;flex-wrap:wrap;}
.art-nav .an-link{padding:7px 11px;border-radius:8px;color:#33414f;font-size:14px;text-decoration:none;white-space:nowrap;transition:background .15s,color .15s;}
.art-nav .an-link:hover{background:#eef3fb;color:#0F2B5B;}
.art-nav .an-link.active{color:#0F2B5B;background:#e7eefb;font-weight:600;}
.art-nav .an-phone{display:inline-flex;align-items:center;gap:7px;flex:none;padding:8px 14px;border-radius:999px;background:#0F2B5B;color:#fff;font-size:14px;font-weight:600;text-decoration:none;white-space:nowrap;transition:background .15s;}
.art-nav .an-phone:hover{background:#163a7a;}
.art-nav .an-phone svg{flex:none;}
.art-breadcrumb{max-width:760px;margin:18px auto 0;padding:0 22px;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;font-size:13px;color:#6b7785;display:flex;flex-wrap:wrap;align-items:center;gap:6px;}
.art-breadcrumb a{color:#0F2B5B;text-decoration:none;}
.art-breadcrumb a:hover{text-decoration:underline;}
.art-breadcrumb .sep{color:#b6c0cc;}
.art-breadcrumb .cur{color:#485563;max-width:46vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.art-nav .an-toggle{display:none;margin-left:auto;background:none;border:1px solid #d6dee8;border-radius:8px;width:38px;height:34px;align-items:center;justify-content:center;cursor:pointer;color:#0F2B5B;}
.art-nav .an-toggle span,.art-nav .an-toggle span::before,.art-nav .an-toggle span::after{display:block;width:18px;height:2px;background:#0F2B5B;border-radius:2px;position:relative;}
.art-nav .an-toggle span::before,.art-nav .an-toggle span::after{content:"";position:absolute;left:0;}
.art-nav .an-toggle span::before{top:-6px;}
.art-nav .an-toggle span::after{top:6px;}
@media(max-width:860px){
  .art-nav .an-toggle{display:inline-flex;}
  .art-nav .an-links{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid #e6ecf3;flex-direction:column;align-items:stretch;gap:0;padding:6px 12px 12px;margin-left:0;box-shadow:0 10px 24px rgba(15,43,91,.08);}
  .art-nav .an-links.open{display:flex;}
  .art-nav .an-link{padding:11px 8px;border-radius:6px;}
  .art-nav .an-phone{margin-left:auto;}
  .art-nav .an-inner{flex-wrap:wrap;}
}
@media(max-width:560px){
  .art-nav .an-logo span{display:none;}
  .art-nav .an-phone span{display:none;}
  .art-nav .an-phone{padding:8px;}
}