:root{
  --primary:#0B3D91;
  --primary-dark:#06265f;
  --primary-soft:#eaf1ff;
  --night:#071329;
  --night-soft:#0c1c3c;
  --silver:#cbd5e1;
  --text:#172033;
  --muted:#667085;
  --line:#e4e8f0;
  --surface:#ffffff;
  --background:#f5f7fb;
  --success:#0f9f6e;
  --radius:18px;
  --shadow:0 18px 45px rgba(11,61,145,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--text);
  background:var(--background);
  font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
body,
button,
input,
textarea{font:inherit}
img{max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{border:0}
.container{
  width:min(1180px,calc(100% - 40px));
  margin:0 auto;
}
.topbar{
  position:relative;
  z-index:60;
  color:#dbe7ff;
  background:var(--primary-dark);
  font-size:13px;
}
.topbar .container{
  min-height:38px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.topbar a{
  margin-left:22px;
  color:#eef4ff;
}
.topbar a:hover{color:#fff;text-decoration:underline}
.header{
  position:relative;
  z-index:50;
  background:rgba(255,255,255,.98);
  border-bottom:1px solid var(--line);
  box-shadow:0 5px 20px rgba(15,23,42,.04);
}
.header-inner{
  min-height:78px;
  display:flex;
  align-items:center;
  gap:28px;
}
.logo{
  display:flex;
  align-items:center;
  gap:11px;
  flex:0 0 auto;
  color:var(--night);
  font-size:19px;
  font-weight:800;
  letter-spacing:.01em;
}
.logo img{
  width:42px;
  height:42px;
  object-fit:contain;
  border-radius:10px;
}
.main-nav{
  align-self:stretch;
  display:flex;
  align-items:stretch;
  margin-left:auto;
}
.nav-list{
  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 13px;
  color:#26334b;
  font-size:15px;
  font-weight:650;
  white-space:nowrap;
}
.nav-link:hover,
.nav-item:focus-within>.nav-link{color:var(--primary)}
.nav-link::after{
  content:"";
  position:absolute;
  right:13px;
  bottom:15px;
  left:13px;
  height:2px;
  border-radius:3px;
  background:var(--primary);
  transform:scaleX(0);
  transition:transform .2s ease;
}
.nav-link:hover::after,
.nav-item:focus-within>.nav-link::after{transform:scaleX(1)}
.nav-link.has-arrow{padding-right:25px}
.nav-link.has-arrow::before{
  content:"";
  position:absolute;
  right:11px;
  top:50%;
  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;
  pointer-events:none;
  transform:translate(-50%,10px);
  width:300px;
  padding:18px;
  color:var(--text);
  background:#fff;
  border:1px solid var(--line);
  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;
}
.mega-menu{
  width:min(760px,calc(100vw - 40px));
  padding:22px;
}
.nav-item:hover>.dropdown-panel,
.nav-item:hover>.mega-menu,
.nav-item:focus-within>.dropdown-panel,
.nav-item:focus-within>.mega-menu{
  visibility:visible;
  opacity:1;
  pointer-events:auto;
  transform:translate(-50%,0);
}
.panel-title{
  margin:0 0 12px;
  color:var(--primary);
  font-size:13px;
  font-weight:800;
  letter-spacing:.08em;
}
.panel-list{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:7px;
  margin-bottom:12px;
}
.dropdown-panel .panel-list{grid-template-columns:1fr}
.panel-list a{
  display:block;
  overflow:hidden;
  padding:9px 11px;
  color:#344054;
  background:#f7f9fc;
  border-radius:9px;
  font-size:13px;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.panel-list a:hover{color:var(--primary);background:var(--primary-soft)}
.mega-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:10px;
}
.mega-card{
  min-width:0;
  display:flex;
  flex-direction:column;
  gap:6px;
  min-height:86px;
  padding:13px;
  background:#f7f9fc;
  border:1px solid transparent;
  border-radius:12px;
}
.mega-card:hover{
  background:#fff;
  border-color:#cddaf2;
  box-shadow:0 9px 22px rgba(11,61,145,.08);
}
.mega-card strong{
  display:flex;
  align-items:center;
  gap:8px;
  color:#16233a;
  font-size:14px;
}
.mega-card strong img,
.mega-card>img{
  width:28px;
  height:28px;
  object-fit:contain;
  border-radius:7px;
}
.mega-card small{
  display:-webkit-box;
  overflow:hidden;
  color:var(--muted);
  font-size:12px;
  line-height:1.45;
  -webkit-box-orient:vertical;
  -webkit-line-clamp:2;
}
.mega-footer{
  display:block;
  margin-top:13px;
  padding:10px 12px;
  color:#fff;
  background:var(--primary);
  border-radius:10px;
  text-align:center;
  font-size:13px;
  font-weight:750;
}
.mega-footer:hover{background:var(--primary-dark)}
.header-btns{
  display:flex;
  align-items:center;
  gap:9px;
  flex:0 0 auto;
}
.member-btn,
.open-btn{
  display:inline-flex;
  min-height:40px;
  align-items:center;
  justify-content:center;
  padding:0 15px;
  border-radius:10px;
  font-size:14px;
  font-weight:750;
}
.member-btn{color:var(--primary);background:var(--primary-soft)}
.open-btn{color:#fff;background:var(--primary)}
.member-btn:hover{background:#dbe7ff}
.open-btn:hover{background:var(--primary-dark)}
.hamburger{
  width:43px;
  height:43px;
  display:none;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  padding:0;
  cursor:pointer;
  background:var(--primary-soft);
  border-radius:10px;
}
.hamburger span{
  width:21px;
  height:2px;
  background:var(--primary);
  border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer-overlay{
  position:fixed;
  inset:0;
  z-index:80;
  visibility:hidden;
  opacity:0;
  background:rgba(3,10,24,.62);
  backdrop-filter:blur(3px);
  transition:opacity .24s ease,visibility .24s;
}
.drawer-overlay.open{visibility:visible;opacity:1}
.mobile-drawer{
  position:fixed;
  top:0;
  right:0;
  z-index:90;
  width:min(390px,92vw);
  height:100dvh;
  overflow-y:auto;
  color:var(--text);
  background:#fff;
  box-shadow:-20px 0 45px rgba(5,15,35,.23);
  transform:translateX(105%);
  transition:transform .28s ease;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{
  position:sticky;
  top:0;
  z-index:2;
  min-height:70px;
  display:flex;
  align-items:center;
  gap:12px;
  padding:14px 18px;
  color:#fff;
  background:var(--primary);
}
.drawer-head>span{font-weight:750}
.drawer-head>a{
  margin-left:auto;
  padding:7px 13px;
  color:var(--primary);
  background:#fff;
  border-radius:8px;
  font-size:14px;
  font-weight:750;
}
.drawer-close{
  width:36px;
  height:36px;
  color:#fff;
  background:rgba(255,255,255,.14);
  border-radius:8px;
  cursor:pointer;
  font-size:27px;
  line-height:1;
}
.drawer-menu{padding:14px 18px 32px}
.drawer-link,
.drawer-toggle{
  width:100%;
  display:flex;
  align-items:center;
  min-height:48px;
  padding:0 11px;
  color:#26334b;
  background:transparent;
  border-bottom:1px solid var(--line);
  cursor:pointer;
  text-align:left;
  font-weight:700;
}
.drawer-toggle{
  position:relative;
  padding-right:36px;
}
.drawer-toggle::after{
  content:"+";
  position:absolute;
  right:12px;
  color:var(--primary);
  font-size:21px;
}
.drawer-toggle.active::after{content:"−"}
.drawer-submenu{
  display:none;
  padding:8px 8px 10px 18px;
  background:#f7f9fc;
  border-radius:0 0 10px 10px;
}
.drawer-submenu.open{display:block}
.drawer-submenu a{
  display:block;
  padding:8px 9px;
  color:#536078;
  border-bottom:1px dashed #dfe5ef;
  font-size:14px;
}
.drawer-submenu a:last-child{border-bottom:0}
.drawer-submenu a:hover{color:var(--primary)}
.video-detail-main{
  min-height:620px;
  padding:42px 0 76px;
  background:
    radial-gradient(circle at 15% 0,rgba(11,61,145,.08),transparent 32%),
    linear-gradient(180deg,#f7f9fd 0,#fff 420px);
}
.video-detail-main .video-breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:9px;
  margin-bottom:22px;
  color:var(--muted);
  font-size:14px;
}
.video-detail-main .video-breadcrumb a:hover{color:var(--primary)}
.video-detail-main .video-breadcrumb span::before{
  content:"/";
  margin-right:9px;
  color:#a9b2c1;
}
.video-detail-main .video-heading{
  max-width:920px;
  margin-bottom:25px;
}
.video-detail-main .video-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:13px;
  color:var(--primary);
  font-size:13px;
  font-weight:800;
  letter-spacing:.08em;
}
.video-detail-main .video-kicker::before{
  content:"";
  width:8px;
  height:8px;
  background:#61a8ff;
  border-radius:50%;
  box-shadow:0 0 0 5px rgba(11,61,145,.10);
}
.video-detail-main h1{
  margin:0;
  color:var(--night);
  font-size:clamp(30px,4.3vw,54px);
  line-height:1.16;
  letter-spacing:-.03em;
}
.video-detail-main .video-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px 20px;
  margin-top:17px;
  color:var(--muted);
  font-size:14px;
}
.video-detail-main .video-meta span{
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.video-detail-main .video-meta span::before{
  content:"";
  width:5px;
  height:5px;
  background:#96a2b5;
  border-radius:50%;
}
.video-detail-main .video-stage{
  overflow:hidden;
  padding:12px;
  background:linear-gradient(145deg,#0b1834,#030914);
  border:1px solid rgba(166,193,235,.18);
  border-radius:24px;
  box-shadow:0 30px 75px rgba(4,14,37,.25);
}
.video-detail-main .player-shell{
  position:relative;
  overflow:hidden;
  min-height:280px;
  aspect-ratio:16/9;
  display:flex;
  align-items:center;
  justify-content:center;
  background:#020713;
  border-radius:16px;
}
.video-detail-main .player-shell iframe,
.video-detail-main .player-shell video,
.video-detail-main .player-shell embed,
.video-detail-main .player-shell object{
  width:100%;
  height:100%;
  max-width:100%;
  border:0;
}
.video-detail-main .player-shell img{width:100%;height:100%;object-fit:cover}
.video-detail-main .video-address{
  display:flex;
  align-items:center;
  gap:10px;
  overflow-wrap:anywhere;
  padding:13px 5px 3px;
  color:#b8c7df;
  font-size:12px;
}
.video-detail-main .video-address strong{color:#fff;white-space:nowrap}
.video-detail-main .detail-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 330px;
  gap:30px;
  align-items:start;
  margin-top:30px;
}
.video-detail-main .video-article,
.video-detail-main .video-sidebar{
  min-width:0;
}
.video-detail-main .content-card{
  padding:30px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.video-detail-main .section-title{
  display:flex;
  align-items:center;
  gap:11px;
  margin:0 0 17px;
  color:var(--night);
  font-size:23px;
  line-height:1.35;
}
.video-detail-main .section-title::before{
  content:"";
  width:5px;
  height:25px;
  flex:0 0 auto;
  background:var(--primary);
  border-radius:5px;
}
.video-detail-main .video-intro{
  margin:0;
  color:#4d5b72;
  font-size:16px;
  line-height:1.9;
}
.video-detail-main .video-cover{
  overflow:hidden;
  margin:24px 0;
  border-radius:14px;
  background:#e9eef7;
}
.video-detail-main .video-cover img{
  width:100%;
  max-height:470px;
  display:block;
  object-fit:cover;
}
.video-detail-main .video-content{
  min-width:0;
  max-width:100%;
  overflow-x:auto;
  color:#344054;
  font-size:16px;
  line-height:1.95;
}
.video-detail-main .video-content img,
.video-detail-main .video-content video,
.video-detail-main .video-content iframe,
.video-detail-main .video-content table{
  max-width:100%;
}
.video-detail-main .video-content table{
  width:100%;
  border-collapse:collapse;
}
.video-detail-main .video-content th,
.video-detail-main .video-content td{
  padding:10px;
  border:1px solid var(--line);
}
.video-detail-main .video-content a{color:var(--primary);text-decoration:underline}
.video-detail-main .tag-row{
  display:flex;
  align-items:flex-start;
  flex-wrap:wrap;
  gap:9px;
  margin-top:28px;
  padding-top:21px;
  border-top:1px solid var(--line);
}
.video-detail-main .tag-label{
  color:var(--night);
  font-weight:750;
}
.video-detail-main .tag-value{
  color:var(--primary);
  overflow-wrap:anywhere;
}
.video-detail-main .update-row{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px 20px;
  margin-top:17px;
  color:var(--muted);
  font-size:13px;
}
.video-detail-main .video-sidebar{
  position:sticky;
  top:24px;
}
.video-detail-main .side-card{
  padding:22px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:0 12px 32px rgba(15,23,42,.07);
}
.video-detail-main .side-card+.side-card{margin-top:20px}
.video-detail-main .side-card h2{
  margin:0 0 15px;
  color:var(--night);
  font-size:19px;
}
.video-detail-main .fact-list{
  margin:0;
  padding:0;
  list-style:none;
}
.video-detail-main .fact-list li{
  display:flex;
  justify-content:space-between;
  gap:16px;
  padding:11px 0;
  border-bottom:1px solid var(--line);
  color:var(--muted);
  font-size:14px;
}
.video-detail-main .fact-list li:last-child{border-bottom:0}
.video-detail-main .fact-list strong{
  color:var(--text);
  text-align:right;
  overflow-wrap:anywhere;
}
.video-detail-main .category-cta{
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:45px;
  margin-top:16px;
  color:#fff;
  background:var(--primary);
  border-radius:11px;
  font-weight:750;
}
.video-detail-main .category-cta:hover{background:var(--primary-dark)}
.video-detail-main .notice-card{
  color:#d9e6ff;
  background:
    radial-gradient(circle at 85% 10%,rgba(94,166,255,.23),transparent 35%),
    var(--night);
  border-color:#1c3563;
}
.video-detail-main .notice-card h2{color:#fff}
.video-detail-main .notice-card p{margin:0;color:#b9c8df;font-size:14px}
.video-detail-main .related-section{margin-top:48px}
.video-detail-main .related-head{
  display:flex;
  align-items:end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:19px;
}
.video-detail-main .related-head h2{
  margin:0;
  color:var(--night);
  font-size:28px;
}
.video-detail-main .related-head a{
  color:var(--primary);
  font-size:14px;
  font-weight:750;
}
.video-detail-main .related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.video-detail-main .related-video{
  min-width:0;
  overflow:hidden;
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:0 12px 30px rgba(15,23,42,.06);
  transition:transform .2s ease,box-shadow .2s ease;
}
.video-detail-main .related-video:hover{
  transform:translateY(-4px);
  box-shadow:0 18px 38px rgba(11,61,145,.12);
}
.video-detail-main .related-cover{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  background:#dfe7f4;
}
.video-detail-main .related-cover img{
  width:100%;
  height:100%;
  display:block;
  object-fit:cover;
  transition:transform .3s ease;
}
.video-detail-main .related-video:hover .related-cover img{transform:scale(1.04)}
.video-detail-main .play-mark{
  position:absolute;
  left:15px;
  bottom:14px;
  width:38px;
  height:38px;
  display:grid;
  place-items:center;
  color:#fff;
  background:rgba(11,61,145,.94);
  border:2px solid rgba(255,255,255,.65);
  border-radius:50%;
  font-size:14px;
}
.video-detail-main .duration-mark{
  position:absolute;
  right:10px;
  bottom:10px;
  padding:3px 8px;
  color:#fff;
  background:rgba(2,7,19,.78);
  border-radius:6px;
  font-size:12px;
}
.video-detail-main .related-body{
  min-width:0;
  display:flex;
  flex:1;
  flex-direction:column;
  padding:17px;
}
.video-detail-main .related-body h3{
  display:-webkit-box;
  overflow:hidden;
  margin:0 0 8px;
  color:var(--night);
  font-size:17px;
  line-height:1.5;
  -webkit-box-orient:vertical;
  -webkit-line-clamp:2;
}
.video-detail-main .related-body p{
  display:-webkit-box;
  overflow:hidden;
  margin:0;
  color:var(--muted);
  font-size:13px;
  line-height:1.65;
  -webkit-box-orient:vertical;
  -webkit-line-clamp:2;
}
.footer{
  padding:58px 0 22px;
  color:#bac7db;
  background:var(--night);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.45fr 1fr 1fr 1fr;
  gap:42px;
}
.footer h3{
  margin:0 0 17px;
  color:#fff;
  font-size:16px;
}
.footer-brand strong{
  display:block;
  margin-bottom:14px;
  color:#fff;
  font-size:22px;
}
.footer-brand p{
  max-width:390px;
  margin:0 0 13px;
  font-size:14px;
  line-height:1.8;
}
.footer-grid>div:not(.footer-brand)>a{
  display:block;
  width:max-content;
  max-width:100%;
  margin:0 0 10px;
  color:#bac7db;
  font-size:14px;
}
.footer a:hover{color:#fff}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:20px;
  margin-top:38px;
  padding-top:20px;
  color:#8999b2;
  border-top:1px solid rgba(255,255,255,.11);
  font-size:13px;
}
@media (max-width:1100px){
  .main-nav{display:none}
  .hamburger{display:flex}
  .header-btns{margin-left:auto}
  .video-detail-main .detail-grid{grid-template-columns:minmax(0,1fr) 290px}
}
@media (max-width:860px){
  .video-detail-main{padding-top:30px}
  .video-detail-main .detail-grid{grid-template-columns:1fr}
  .video-detail-main .video-sidebar{position:static}
  .video-detail-main .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  .container{width:min(100% - 28px,1180px)}
  .topbar .container{
    min-height:45px;
    align-items:flex-start;
    flex-direction:column;
    justify-content:center;
    gap:1px;
    padding:6px 0;
  }
  .topbar a{margin:0 14px 0 0}
  .header-inner{min-height:68px;gap:12px}
  .logo span{max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .logo img{width:38px;height:38px}
  .member-btn{display:none}
  .open-btn{min-height:38px;padding:0 12px}
  .video-detail-main h1{font-size:31px}
  .video-detail-main .video-stage{padding:7px;border-radius:17px}
  .video-detail-main .player-shell{min-height:190px;border-radius:12px}
  .video-detail-main .video-address{align-items:flex-start;flex-direction:column}
  .video-detail-main .content-card{padding:21px}
  .video-detail-main .related-head{align-items:flex-start;flex-direction:column}
  .video-detail-main .related-grid{grid-template-columns:1fr}
  .video-detail-main .update-row{flex-direction:column}
  .footer{padding-top:42px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{align-items:flex-start;flex-direction:column}
}