:root{
  --primary:#0B3D91;
  --primary-dark:#06285f;
  --primary-soft:#eaf1ff;
  --ink:#111827;
  --muted:#64748b;
  --line:#dbe3ef;
  --surface:#ffffff;
  --page:#f4f7fb;
  --accent:#d64032;
  --radius:18px;
  --shadow:0 18px 45px rgba(11,61,145,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  background:var(--page);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;
  line-height:1.65;
}
body,button,input,textarea,select{font:inherit}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{color:inherit}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.topbar{
  position:relative;
  z-index:120;
  color:#dce8ff;
  background:var(--primary-dark);
  font-size:13px;
}
.topbar .container{
  min-height:36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.topbar .contact{display:flex;align-items:center;gap:20px}
.topbar a{transition:color .2s ease}
.topbar a:hover{color:#fff}
.header{
  position:relative;
  z-index:110;
  background:rgba(255,255,255,.98);
  border-bottom:1px solid var(--line);
  box-shadow:0 8px 24px rgba(15,23,42,.04);
}
.header-inner{
  min-height:78px;
  display:flex;
  align-items:center;
  gap:26px;
}
.logo{
  min-width:180px;
  display:flex;
  align-items:center;
  gap:11px;
  color:var(--primary-dark);
  font-weight:800;
  letter-spacing:-.02em;
}
.logo img{
  width:42px;
  height:42px;
  object-fit:contain;
  border-radius:10px;
}
.logo span{max-width:170px;line-height:1.25}
.main-nav{margin-left:auto;align-self:stretch}
.nav-list{
  height:100%;
  display:flex;
  align-items:stretch;
  gap:2px;
  margin:0;
  padding:0;
  list-style:none;
}
.nav-item{
  position:relative;
  display:flex;
  align-items:stretch;
}
.nav-link{
  position:relative;
  display:flex;
  align-items:center;
  padding:0 12px;
  color:#243247;
  font-size:15px;
  font-weight:700;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  right:12px;
  bottom:15px;
  left:12px;
  height:2px;
  border-radius:999px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .2s ease;
}
.nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--primary)}
.nav-link:hover::after,.nav-item:focus-within>.nav-link::after{transform:scaleX(1)}
.nav-link.has-arrow{padding-right:24px}
.nav-link.has-arrow::before{
  content:"";
  position:absolute;
  top:50%;
  right:10px;
  width:6px;
  height:6px;
  border-right:1.5px solid currentColor;
  border-bottom:1.5px solid currentColor;
  transform:translateY(-70%) rotate(45deg);
}
.dropdown-panel,.mega-menu{
  position:absolute;
  top:100%;
  left:50%;
  visibility:hidden;
  opacity:0;
  transform:translate(-50%,10px);
  pointer-events:none;
  background:#fff;
  border:1px solid var(--line);
  border-top:3px solid var(--primary);
  border-radius:0 0 16px 16px;
  box-shadow:0 24px 55px rgba(15,23,42,.16);
  transition:opacity .18s ease,transform .18s ease,visibility .18s;
}
.dropdown-panel::before,.mega-menu::before{
  content:"";
  position:absolute;
  right:0;
  bottom:100%;
  left:0;
  height:12px;
}
.nav-item:hover>.dropdown-panel,
.nav-item:focus-within>.dropdown-panel,
.nav-item:hover>.mega-menu,
.nav-item:focus-within>.mega-menu{
  visibility:visible;
  opacity:1;
  transform:translate(-50%,0);
  pointer-events:auto;
}
.dropdown-panel{
  width:330px;
  padding:12px;
}
.dropdown-panel>a:not(.mega-footer){
  display:flex;
  flex-direction:column;
  gap:2px;
  padding:11px 12px;
  border-radius:10px;
}
.dropdown-panel>a:not(.mega-footer):hover{background:var(--primary-soft);color:var(--primary)}
.dropdown-panel strong{
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  font-size:14px;
}
.dropdown-panel small{color:var(--muted);font-size:12px}
.mega-menu{
  width:min(760px,calc(100vw - 48px));
  padding:18px;
}
.nav-item:nth-last-child(-n+3) .mega-menu{left:auto;right:-120px;transform:translate(0,10px)}
.nav-item:nth-last-child(-n+3):hover>.mega-menu,
.nav-item:nth-last-child(-n+3):focus-within>.mega-menu{transform:translate(0,0)}
.mega-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:10px;
}
.mega-grid+.mega-grid{
  margin-top:12px;
  padding-top:12px;
  border-top:1px solid var(--line);
  grid-template-columns:repeat(4,minmax(0,1fr));
}
.mega-grid>a{
  min-width:0;
  padding:10px 12px;
  border-radius:11px;
  color:#334155;
  font-size:13px;
}
.mega-grid>a:hover{background:var(--primary-soft);color:var(--primary)}
.mega-card{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  align-items:start;
  column-gap:9px;
}
.mega-card img{
  grid-row:1/3;
  width:32px;
  height:32px;
  object-fit:contain;
  border-radius:7px;
}
.mega-card strong{
  overflow:hidden;
  color:#162033;
  text-overflow:ellipsis;
  white-space:nowrap;
  font-size:14px;
}
.mega-card small{
  display:block;
  overflow:hidden;
  color:var(--muted);
  line-height:1.5;
  font-size:12px;
}
.mega-footer{
  display:block;
  margin-top:12px;
  padding:11px 14px;
  color:#fff;
  background:var(--primary);
  border-radius:10px;
  text-align:center;
  font-weight:700;
  font-size:13px;
}
.mega-footer:hover{background:var(--primary-dark)}
.header-btns{display:flex;align-items:center;gap:9px}
.member-btn,.account-btn{
  display:inline-flex;
  min-height:40px;
  align-items:center;
  justify-content:center;
  padding:0 15px;
  border-radius:10px;
  font-size:14px;
  font-weight:800;
  white-space:nowrap;
}
.member-btn{color:var(--primary);border:1px solid #bfd0ee;background:#fff}
.member-btn:hover{background:var(--primary-soft)}
.account-btn{color:#fff;background:var(--primary);border:1px solid var(--primary)}
.account-btn:hover{background:var(--primary-dark)}
.hamburger{
  display:none;
  width:42px;
  height:42px;
  padding:10px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  cursor:pointer;
}
.hamburger span{
  display:block;
  width:100%;
  height:2px;
  margin:4px 0;
  border-radius:3px;
  background:var(--ink);
  transition:transform .2s ease,opacity .2s ease;
}
.hamburger.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.drawer-overlay{
  position:fixed;
  z-index:199;
  inset:0;
  visibility:hidden;
  opacity:0;
  background:rgba(4,15,35,.55);
  backdrop-filter:blur(3px);
  transition:opacity .25s ease,visibility .25s ease;
}
.drawer-overlay.open{visibility:visible;opacity:1}
.mobile-drawer{
  position:fixed;
  z-index:200;
  top:0;
  right:0;
  width:min(400px,88vw);
  height:100dvh;
  overflow-y:auto;
  background:#fff;
  box-shadow:-24px 0 55px rgba(15,23,42,.22);
  transform:translateX(105%);
  transition:transform .25s ease;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{
  position:sticky;
  z-index:2;
  top:0;
  min-height:70px;
  display:flex;
  align-items:center;
  gap:12px;
  padding:14px 18px;
  color:#fff;
  background:var(--primary-dark);
}
.drawer-head strong{margin-right:auto}
.drawer-head>a{
  padding:7px 12px;
  border:1px solid rgba(255,255,255,.35);
  border-radius:8px;
  font-size:13px;
  font-weight:700;
}
.drawer-close{
  width:36px;
  height:36px;
  color:#fff;
  background:transparent;
  border:0;
  cursor:pointer;
  font-size:29px;
  line-height:1;
}
.drawer-menu{padding:12px 18px 28px}
.drawer-link,.drawer-toggle{
  width:100%;
  min-height:50px;
  display:flex;
  align-items:center;
  padding:0 4px;
  color:#1f2c40;
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
  font-weight:750;
  text-align:left;
  cursor:pointer;
}
.drawer-toggle{position:relative;padding-right:30px}
.drawer-toggle::after{
  content:"+";
  position:absolute;
  right:6px;
  color:var(--primary);
  font-size:21px;
  font-weight:500;
}
.drawer-toggle.active::after{content:"−"}
.drawer-submenu{
  display:none;
  padding:8px 0 8px 13px;
  border-bottom:1px solid var(--line);
}
.drawer-submenu.open{display:block}
.drawer-submenu a{
  display:block;
  padding:9px 10px;
  color:var(--muted);
  border-radius:8px;
  font-size:14px;
}
.drawer-submenu a:hover{color:var(--primary);background:var(--primary-soft)}
.tag-page{min-height:650px}
.tag-page .tag-hero{
  position:relative;
  overflow:hidden;
  padding:76px 0 68px;
  color:#fff;
  background:
    radial-gradient(circle at 82% 18%,rgba(255,255,255,.16) 0 5%,transparent 5.5%),
    radial-gradient(circle at 75% 68%,rgba(255,255,255,.09) 0 10%,transparent 10.5%),
    linear-gradient(128deg,var(--primary-dark),var(--primary) 65%,#1958bd);
}
.tag-page .tag-hero::before{
  content:"#";
  position:absolute;
  top:-100px;
  right:7%;
  color:rgba(255,255,255,.07);
  font-size:330px;
  font-weight:900;
  line-height:1;
}
.tag-page .tag-hero::after{
  content:"";
  position:absolute;
  bottom:-145px;
  left:-80px;
  width:330px;
  height:330px;
  border:55px solid rgba(255,255,255,.05);
  border-radius:50%;
}
.tag-page .tag-hero-inner{position:relative;z-index:1;max-width:840px}
.tag-page .breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin-bottom:22px;
  color:#c9daf8;
  font-size:14px;
}
.tag-page .breadcrumb a:hover{color:#fff}
.tag-page .tag-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
  color:#dce8ff;
  font-size:13px;
  font-weight:800;
  letter-spacing:.12em;
}
.tag-page .tag-kicker::before{
  content:"";
  width:28px;
  height:2px;
  background:#fff;
}
.tag-page h1{
  margin:0;
  font-size:clamp(38px,7vw,72px);
  line-height:1.08;
  letter-spacing:-.045em;
}
.tag-page .tag-intro{
  max-width:680px;
  margin:18px 0 0;
  color:#e4edff;
  font-size:17px;
}
.tag-page .tag-stat{
  display:inline-flex;
  align-items:center;
  margin-top:25px;
  padding:9px 15px;
  border:1px solid rgba(255,255,255,.24);
  border-radius:999px;
  background:rgba(255,255,255,.1);
  backdrop-filter:blur(8px);
  font-size:14px;
}
.tag-page .tag-stat strong{margin:0 5px;font-size:18px}
.tag-page .tag-content{padding:58px 0 80px}
.tag-page .content-head{
  display:flex;
  align-items:end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:24px;
}
.tag-page .content-head h2{margin:0;font-size:30px;line-height:1.2}
.tag-page .content-head p{margin:6px 0 0;color:var(--muted)}
.tag-page .result-count{
  flex:none;
  color:var(--primary);
  font-size:14px;
  font-weight:800;
}
.tag-page .article-list{display:grid;gap:20px}
.tag-page .article-card{
  min-width:0;
  display:grid;
  grid-template-columns:300px minmax(0,1fr);
  overflow:hidden;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:0 10px 28px rgba(15,23,42,.055);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.tag-page .article-card:hover{
  transform:translateY(-3px);
  border-color:#b8c9e7;
  box-shadow:var(--shadow);
}
.tag-page .article-cover{
  position:relative;
  min-height:240px;
  overflow:hidden;
  background:#dfe7f2;
}
.tag-page .article-cover img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.tag-page .article-card:hover .article-cover img{transform:scale(1.035)}
.tag-page .article-cover-badge{
  position:absolute;
  top:16px;
  left:16px;
  padding:6px 11px;
  color:#fff;
  background:var(--primary);
  border-radius:999px;
  box-shadow:0 8px 18px rgba(11,61,145,.24);
  font-size:12px;
  font-weight:800;
}
.tag-page .article-body{
  min-width:0;
  display:flex;
  flex-direction:column;
  padding:25px 28px;
}
.tag-page .article-meta{
  display:flex;
  flex-wrap:wrap;
  gap:7px 18px;
  margin-bottom:10px;
  color:var(--muted);
  font-size:13px;
}
.tag-page .article-meta span{display:inline-flex;align-items:center}
.tag-page .article-meta span::before{
  content:"";
  width:5px;
  height:5px;
  margin-right:7px;
  background:#9eb3d3;
  border-radius:50%;
}
.tag-page .article-title{
  margin:0;
  color:#172033;
  font-size:23px;
  line-height:1.35;
  letter-spacing:-.02em;
}
.tag-page .article-title a:hover{color:var(--primary)}
.tag-page .article-summary{
  display:-webkit-box;
  overflow:hidden;
  margin:12px 0 14px;
  color:#526176;
  -webkit-box-orient:vertical;
  -webkit-line-clamp:3;
  line-clamp:3;
  line-height:1.75;
}
.tag-page .article-tags{
  margin:0 0 18px;
  color:#65758c;
  font-size:13px;
  overflow-wrap:anywhere;
}
.tag-page .article-tags strong{color:#34445c}
.tag-page .read-more{
  align-self:flex-start;
  display:inline-flex;
  align-items:center;
  gap:9px;
  margin-top:auto;
  color:var(--primary);
  font-size:14px;
  font-weight:850;
}
.tag-page .read-more::after{
  content:"→";
  transition:transform .2s ease;
}
.tag-page .read-more:hover::after{transform:translateX(4px)}
.tag-page .pagination{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:8px;
  margin-top:42px;
}
.tag-page .pagination a{
  min-width:42px;
  height:42px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:0 13px;
  color:#34445c;
  background:#fff;
  border:1px solid var(--line);
  border-radius:10px;
  font-size:14px;
  font-weight:750;
}
.tag-page .pagination a:hover,
.tag-page .pagination a.active,
.tag-page .pagination a.current{
  color:#fff;
  background:var(--primary);
  border-color:var(--primary);
}
.tag-page .tag-note{
  margin-top:40px;
  padding:20px 24px;
  color:#536278;
  background:#edf3ff;
  border-left:4px solid var(--primary);
  border-radius:0 12px 12px 0;
  font-size:14px;
}
.footer{
  color:#cbd5e1;
  background:#08172f;
}
.footer .container{padding-top:58px}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:44px;
  padding-bottom:42px;
}
.footer-brand{
  margin-bottom:15px;
  color:#fff;
  font-size:23px;
  font-weight:850;
}
.footer p{margin:8px 0;color:#9fb0c7;font-size:14px}
.footer h3{
  margin:0 0 16px;
  color:#fff;
  font-size:15px;
}
.footer-grid>div>a{
  display:block;
  width:max-content;
  max-width:100%;
  margin:9px 0;
  color:#aebdd0;
  font-size:14px;
  overflow-wrap:anywhere;
}
.footer-grid>div>a:hover{color:#fff}
.footer-bottom{
  padding:20px 0 26px;
  color:#8092a9;
  border-top:1px solid rgba(255,255,255,.1);
  text-align:center;
  font-size:13px;
}
@media (max-width:1100px){
  .main-nav{display:none}
  .hamburger{display:block}
  .header-inner{min-height:70px}
  .header-btns{margin-left:auto}
}
@media (max-width:820px){
  .container{width:min(100% - 30px,1180px)}
  .topbar .container{min-height:42px}
  .topbar .contact a:first-child{display:none}
  .tag-page .tag-hero{padding:58px 0 54px}
  .tag-page .article-card{grid-template-columns:230px minmax(0,1fr)}
  .tag-page .article-cover{min-height:260px}
  .tag-page .article-body{padding:22px}
  .tag-page .article-title{font-size:20px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:620px){
  .container{width:min(100% - 24px,1180px)}
  .topbar .container{justify-content:center}
  .topbar .contact{display:none}
  .logo{min-width:0}
  .logo img{width:38px;height:38px}
  .logo span{max-width:130px;font-size:14px}
  .member-btn{display:none}
  .account-btn{min-height:38px;padding:0 12px}
  .tag-page .tag-hero{padding:48px 0}
  .tag-page .tag-hero::before{top:-35px;right:-15px;font-size:180px}
  .tag-page .tag-intro{font-size:15px}
  .tag-page .tag-content{padding:42px 0 60px}
  .tag-page .content-head{display:block}
  .tag-page .result-count{display:block;margin-top:8px}
  .tag-page .article-card{display:block}
  .tag-page .article-cover{min-height:0;aspect-ratio:16/9}
  .tag-page .article-body{padding:20px}
  .tag-page .article-summary{-webkit-line-clamp:3;line-clamp:3}
  .footer .container{padding-top:44px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}