:root{
  --theme:#0B3D91;
  --theme-dark:#072b67;
  --theme-light:#eaf1ff;
  --ink:#142033;
  --muted:#667085;
  --line:#dfe5ee;
  --surface:#ffffff;
  --background:#f4f7fb;
  --success:#16865c;
  --radius:18px;
  --shadow:0 16px 44px rgba(15,38,75,.1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  background:var(--background);
  font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;
  line-height:1.65;
}
body.drawer-locked{overflow:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input{font:inherit}
.container{width:min(1200px,calc(100% - 40px));margin:0 auto}

.topbar{
  min-height:38px;
  display:flex;
  align-items:center;
  color:#dbe8ff;
  background:#071a38;
  font-size:13px;
}
.topbar .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.topbar a{margin-left:20px;color:#dbe8ff}
.topbar a:hover{color:#fff}

.header{
  position:relative;
  z-index:50;
  background:rgba(255,255,255,.98);
  border-bottom:1px solid var(--line);
  box-shadow:0 4px 20px rgba(19,41,75,.05);
}
.header-inner{
  min-height:78px;
  display:flex;
  align-items:center;
  gap:24px;
}
.logo{
  min-width:190px;
  display:flex;
  align-items:center;
  gap:11px;
  color:var(--theme);
  font-size:19px;
  font-weight:800;
}
.logo img{
  width:42px;
  height:42px;
  border-radius:11px;
  object-fit:contain;
  background:#fff;
}
.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:center}
.nav-link{
  height:100%;
  display:flex;
  align-items:center;
  padding:0 13px;
  color:#26364e;
  font-size:15px;
  font-weight:650;
  white-space:nowrap;
}
.nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}
.has-arrow::after{
  content:"";
  width:6px;
  height:6px;
  margin-left:7px;
  border-right:1.5px solid currentColor;
  border-bottom:1.5px solid currentColor;
  transform:rotate(45deg) translateY(-2px);
}
.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-radius:0 0 18px 18px;
  box-shadow:0 24px 60px rgba(8,29,67,.16);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
}
.dropdown-panel::before,.mega-menu::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:-10px;
  height:10px;
}
.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:310px;
  padding:12px;
}
.dropdown-panel>a{
  display:block;
  padding:11px 12px;
  border-radius:9px;
  color:#34445d;
  font-size:14px;
}
.dropdown-panel>a:hover{color:var(--theme);background:var(--theme-light)}
.mega-menu{
  width:min(920px,calc(100vw - 48px));
  padding:20px;
}
.nav-item:nth-child(3) .mega-menu{left:28%}
.nav-item:nth-child(4) .mega-menu{left:15%}
.nav-item:nth-child(5) .mega-menu{left:-30%}
.nav-item:nth-child(6) .mega-menu{left:-100%}
.mega-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:12px;
}
.mega-grid+.mega-grid{margin-top:14px}
.mega-card{
  min-width:0;
  display:grid;
  grid-template-columns:54px minmax(0,1fr);
  grid-template-rows:auto auto;
  column-gap:11px;
  padding:12px;
  border:1px solid #e7ebf2;
  border-radius:13px;
  background:#fff;
  transition:.2s ease;
}
.mega-card:hover{
  border-color:#b8caec;
  background:#f7faff;
  transform:translateY(-2px);
}
.mega-card img{
  grid-row:1/3;
  width:54px;
  height:54px;
  border-radius:10px;
  object-fit:cover;
  background:#eef3fa;
}
.mega-card strong{
  min-width:0;
  overflow:hidden;
  color:#1b2c45;
  font-size:14px;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.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:inline-flex;
  align-items:center;
  margin:14px 8px 0 0;
  padding:8px 12px;
  color:var(--theme);
  background:var(--theme-light);
  border-radius:999px;
  font-size:13px;
  font-weight:700;
}
.mega-footer:hover{color:#fff;background:var(--theme)}
.header-btns{
  display:flex;
  align-items:center;
  gap:9px;
}
.member-entry,.open-account{
  display:inline-flex;
  min-height:40px;
  align-items:center;
  justify-content:center;
  padding:0 16px;
  border-radius:10px;
  font-size:14px;
  font-weight:750;
}
.member-entry{color:var(--theme);border:1px solid #b9c9e8;background:#fff}
.open-account{color:#fff;background:var(--theme);box-shadow:0 9px 20px rgba(11,61,145,.2)}
.member-entry:hover{background:var(--theme-light)}
.open-account:hover{background:var(--theme-dark)}
.hamburger{
  width:43px;
  height:43px;
  display:none;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  padding:0;
  border:0;
  border-radius:10px;
  background:var(--theme-light);
  cursor:pointer;
}
.hamburger span{
  width:21px;
  height:2px;
  background:var(--theme);
  transition:.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:98;
  visibility:hidden;
  opacity:0;
  background:rgba(4,14,32,.58);
  backdrop-filter:blur(2px);
  transition:.25s ease;
}
.drawer-overlay.open{visibility:visible;opacity:1}
.mobile-drawer{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  z-index:99;
  width:min(390px,92vw);
  overflow-y:auto;
  background:#fff;
  box-shadow:-25px 0 60px rgba(0,0,0,.2);
  transform:translateX(105%);
  transition:transform .28s ease;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{
  min-height:74px;
  display:flex;
  align-items:center;
  gap:10px;
  padding:15px 18px;
  color:#fff;
  background:var(--theme);
}
.drawer-head>a{
  padding:8px 13px;
  border:1px solid rgba(255,255,255,.4);
  border-radius:9px;
  font-size:14px;
}
.drawer-close{
  width:38px;
  height:38px;
  margin-left:auto;
  padding:0;
  color:#fff;
  background:rgba(255,255,255,.12);
  border:0;
  border-radius:10px;
  font-size:28px;
  line-height:1;
  cursor:pointer;
}
.drawer-menu{padding:14px 18px 28px}
.drawer-link,.drawer-toggle{
  width:100%;
  min-height:48px;
  display:flex;
  align-items:center;
  padding:0 6px;
  color:#24334a;
  background:none;
  border:0;
  border-bottom:1px solid #edf0f5;
  font-weight:700;
  text-align:left;
  cursor:pointer;
}
.drawer-toggle::after{
  content:"+";
  margin-left:auto;
  color:var(--theme);
  font-size:20px;
}
.drawer-toggle.active::after{content:"−"}
.drawer-submenu{
  display:none;
  padding:8px 8px 12px;
  background:#f7f9fc;
  border-radius:0 0 11px 11px;
}
.drawer-submenu.open{display:block}
.drawer-submenu a{
  display:block;
  padding:9px 10px;
  color:#526178;
  border-radius:7px;
  font-size:14px;
}
.drawer-submenu a:hover{color:var(--theme);background:#fff}

.video-page{min-height:680px}
.video-page .video-hero{
  position:relative;
  overflow:hidden;
  padding:78px 0 68px;
  color:#fff;
  background:
    radial-gradient(circle at 20% 0,rgba(66,133,244,.35),transparent 35%),
    radial-gradient(circle at 85% 80%,rgba(22,134,92,.18),transparent 32%),
    linear-gradient(135deg,#06162f 0%,#0b3d91 55%,#082d69 100%);
}
.video-page .video-hero::before{
  content:"";
  position:absolute;
  inset:0;
  opacity:.22;
  background-image:
    linear-gradient(rgba(255,255,255,.08) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px);
  background-size:42px 42px;
}
.video-page .hero-inner{
  position:relative;
  z-index:1;
  max-width:820px;
  margin:auto;
  text-align:center;
}
.video-page .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:16px;
  padding:7px 13px;
  color:#dce8ff;
  border:1px solid rgba(255,255,255,.25);
  border-radius:999px;
  background:rgba(255,255,255,.08);
  font-size:13px;
}
.video-page .eyebrow::before{
  content:"";
  width:8px;
  height:8px;
  border-radius:50%;
  background:#80e1b6;
  box-shadow:0 0 0 5px rgba(128,225,182,.12);
}
.video-page .video-hero h1{
  margin:0;
  font-size:clamp(34px,5vw,58px);
  line-height:1.15;
  letter-spacing:-1.5px;
}
.video-page .video-hero p{
  max-width:700px;
  margin:18px auto 0;
  color:#d8e5f9;
  font-size:17px;
}
.video-page .category-strip{
  position:relative;
  z-index:3;
  margin-top:-28px;
}
.video-page .category-panel{
  display:flex;
  align-items:center;
  gap:10px;
  overflow-x:auto;
  padding:14px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--shadow);
  scrollbar-width:thin;
}
.video-page .category-label{
  flex:0 0 auto;
  padding:9px 12px;
  color:#5c6879;
  font-size:13px;
  font-weight:700;
}
.video-page .category-panel a{
  flex:0 0 auto;
  padding:9px 15px;
  color:#36465f;
  border:1px solid #e3e8f0;
  border-radius:999px;
  background:#fafcff;
  font-size:14px;
  font-weight:650;
}
.video-page .category-panel a:hover{
  color:#fff;
  border-color:var(--theme);
  background:var(--theme);
}
.video-page .video-section{padding:64px 0 82px}
.video-page .section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:25px;
}
.video-page .section-head h2{
  margin:0;
  color:#15253c;
  font-size:30px;
  line-height:1.25;
}
.video-page .section-head p{
  max-width:610px;
  margin:7px 0 0;
  color:var(--muted);
}
.video-page .section-count{
  flex:0 0 auto;
  color:var(--theme);
  font-size:13px;
  font-weight:750;
}
.video-page .video-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.video-page .video-card{
  min-width:0;
  overflow:hidden;
  background:#fff;
  border:1px solid #e1e7ef;
  border-radius:var(--radius);
  box-shadow:0 10px 32px rgba(18,42,76,.07);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.video-page .video-card:hover{
  border-color:#b8c9e7;
  box-shadow:0 20px 48px rgba(11,61,145,.14);
  transform:translateY(-5px);
}
.video-page .video-cover{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16/9;
  background:#dfe7f2;
}
.video-page .video-cover img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.video-page .video-card:hover .video-cover img{transform:scale(1.045)}
.video-page .play-mark{
  position:absolute;
  left:18px;
  bottom:16px;
  width:48px;
  height:48px;
  display:grid;
  place-items:center;
  color:#fff;
  background:rgba(11,61,145,.92);
  border:3px solid rgba(255,255,255,.82);
  border-radius:50%;
  box-shadow:0 8px 22px rgba(0,0,0,.25);
}
.video-page .play-mark::after{
  content:"";
  margin-left:3px;
  border-top:7px solid transparent;
  border-bottom:7px solid transparent;
  border-left:11px solid #fff;
}
.video-page .duration{
  position:absolute;
  right:13px;
  bottom:13px;
  padding:4px 8px;
  color:#fff;
  background:rgba(4,13,29,.78);
  border-radius:6px;
  font-size:12px;
}
.video-page .video-body{padding:20px}
.video-page .video-type{
  display:inline-flex;
  margin-bottom:10px;
  padding:5px 9px;
  color:var(--theme);
  background:var(--theme-light);
  border-radius:999px;
  font-size:12px;
  font-weight:750;
}
.video-page .video-body h3{
  display:-webkit-box;
  overflow:hidden;
  margin:0;
  color:#192b44;
  font-size:19px;
  line-height:1.45;
  -webkit-box-orient:vertical;
  -webkit-line-clamp:2;
}
.video-page .video-body h3 a:hover{color:var(--theme)}
.video-page .video-body p{
  display:-webkit-box;
  min-height:50px;
  overflow:hidden;
  margin:11px 0 17px;
  color:var(--muted);
  font-size:14px;
  line-height:1.75;
  -webkit-box-orient:vertical;
  -webkit-line-clamp:2;
}
.video-page .video-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:15px;
  color:var(--theme);
  border-top:1px solid #edf0f4;
  font-size:14px;
  font-weight:750;
}
.video-page .video-link::after{
  content:"→";
  transition:transform .2s ease;
}
.video-page .video-link:hover::after{transform:translateX(4px)}
.video-page .pagination{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:9px;
  margin-top:42px;
}
.video-page .pagination a{
  min-width:42px;
  min-height:42px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:0 13px;
  color:#3e4e65;
  background:#fff;
  border:1px solid #dce3ed;
  border-radius:10px;
  font-size:14px;
  font-weight:700;
}
.video-page .pagination a:hover,
.video-page .pagination a.active,
.video-page .pagination a.current{
  color:#fff;
  border-color:var(--theme);
  background:var(--theme);
}
.video-page .video-note{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:18px;
  margin-top:54px;
  padding:25px 28px;
  color:#e5edfb;
  background:#0a234d;
  border-radius:20px;
}
.video-page .note-icon{
  width:50px;
  height:50px;
  display:grid;
  place-items:center;
  color:#0a234d;
  background:#fff;
  border-radius:15px;
  font-size:21px;
  font-weight:900;
}
.video-page .video-note h3{margin:0 0 4px;color:#fff;font-size:19px}
.video-page .video-note p{margin:0;color:#bfcde2;font-size:14px}
.video-page .note-action{
  display:inline-flex;
  min-height:43px;
  align-items:center;
  justify-content:center;
  padding:0 17px;
  color:var(--theme);
  background:#fff;
  border-radius:10px;
  font-size:14px;
  font-weight:750;
}

.footer{
  padding:62px 0 0;
  color:#bbc7d9;
  background:#07182f;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.45fr 1fr 1fr 1.15fr;
  gap:42px;
}
.footer h3,.footer h4{margin:0 0 16px;color:#fff}
.footer h3{font-size:22px}
.footer h4{font-size:15px}
.footer p{margin:8px 0;color:#aebbd0;font-size:14px}
.footer-grid>div>a{
  display:block;
  width:max-content;
  max-width:100%;
  margin:9px 0;
  color:#b8c5d8;
  font-size:14px;
}
.footer-grid>div>a:hover{color:#fff}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  margin-top:42px;
  padding:20px 0;
  color:#8fa0b8;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;
}

@media (max-width:1100px){
  .main-nav{display:none}
  .hamburger{display:flex}
  .header-inner{min-height:70px}
  .header-btns{margin-left:auto}
  .video-page .video-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:760px){
  .container{width:min(100% - 28px,1200px)}
  .topbar{padding:8px 0}
  .topbar .container{align-items:flex-start;flex-direction:column;gap:3px}
  .topbar .container>span:last-child{display:flex;flex-wrap:wrap;gap:3px 14px}
  .topbar a{margin:0}
  .logo{min-width:0}
  .logo img{width:38px;height:38px}
  .logo span{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .member-entry{display:none}
  .open-account{min-height:38px;padding:0 13px}
  .video-page .video-hero{padding:58px 0 60px}
  .video-page .video-hero h1{font-size:36px}
  .video-page .video-hero p{font-size:15px}
  .video-page .category-strip{margin-top:-20px}
  .video-page .category-panel{padding:10px}
  .video-page .video-section{padding:48px 0 62px}
  .video-page .section-head{display:block}
  .video-page .section-count{display:block;margin-top:10px}
  .video-page .video-grid{grid-template-columns:1fr}
  .video-page .video-note{grid-template-columns:auto 1fr}
  .video-page .note-action{grid-column:1/-1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .footer-bottom{align-items:flex-start;flex-direction:column}
}
@media (max-width:480px){
  .header-inner{gap:10px}
  .logo span{max-width:112px;font-size:16px}
  .open-account{display:none}
  .video-page .video-hero h1{font-size:31px}
  .video-page .section-head h2{font-size:25px}
  .video-page .video-body{padding:17px}
  .video-page .video-note{grid-template-columns:1fr;padding:22px}
  .video-page .note-action{grid-column:auto}
  .footer-grid{grid-template-columns:1fr}
}