:root{
      --primary:#0B3D91;
      --primary-dark:#072b68;
      --primary-soft:#eaf1ff;
      --accent:#f37a5b;
      --cream:#fff8ec;
      --ink:#252a34;
      --muted:#687183;
      --line:#e4e8ef;
      --surface:#fff;
      --background:#f5f7fb;
      --shadow:0 18px 48px rgba(25,40,70,.1);
      --radius:20px;
    }
    *{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;
      -webkit-font-smoothing:antialiased;
    }
    body,button,input{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:110;
      color:#e7efff;
      background:#06285f;
      font-size:13px;
    }
    .topbar .container{
      min-height:38px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .topbar-links{display:flex;align-items:center;gap:24px}
    .topbar a{color:#fff}
    .topbar a:hover{text-decoration:underline}

    .header{
      position:sticky;
      top:0;
      z-index:100;
      background:rgba(255,255,255,.97);
      border-bottom:1px solid rgba(221,227,237,.95);
      box-shadow:0 8px 24px rgba(18,39,75,.04);
      backdrop-filter:blur(14px);
    }
    .header-inner{
      min-height:78px;
      display:flex;
      align-items:center;
      gap:28px;
    }
    .logo{
      min-width:190px;
      display:flex;
      align-items:center;
      gap:11px;
      color:var(--primary);
      font-size:19px;
      font-weight:800;
      letter-spacing:.02em;
    }
    .logo img{
      width:42px;
      height:42px;
      object-fit:contain;
      border-radius:10px;
    }
    .main-nav{margin-left:auto}
    .nav-list{
      margin:0;
      padding:0;
      display:flex;
      align-items:stretch;
      list-style:none;
    }
    .nav-item{position:relative}
    .nav-link{
      min-height:78px;
      padding:0 13px;
      display:flex;
      align-items:center;
      gap:6px;
      color:#303746;
      font-size:15px;
      font-weight:650;
      white-space:nowrap;
    }
    .nav-link:hover,.nav-item:focus-within>.nav-link{
      color:var(--primary);
      background:var(--primary-soft);
    }
    .has-arrow::after{
      content:"";
      width:6px;
      height:6px;
      margin-top:-4px;
      border-right:1.5px solid currentColor;
      border-bottom:1.5px solid currentColor;
      transform:rotate(45deg);
      transition:.2s ease;
    }
    .nav-item:hover .has-arrow::after,
    .nav-item:focus-within .has-arrow::after{
      margin-top:3px;
      transform:rotate(225deg);
    }
    .dropdown-panel,.mega-menu{
      position:absolute;
      top:100%;
      left:50%;
      z-index:120;
      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(13,34,70,.16);
      transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
    }
    .dropdown-panel::before,.mega-menu::before{
      content:"";
      position:absolute;
      right:0;
      bottom:100%;
      left:0;
      height:10px;
    }
    .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;
      transform:translate(-50%,0);
      pointer-events:auto;
    }
    .dropdown-panel{
      width:330px;
      padding:20px;
    }
    .mega-menu{
      width:min(850px,82vw);
      padding:22px;
    }
    .panel-title{
      margin:0 0 11px;
      color:var(--primary);
      font-size:13px;
      font-weight:800;
      letter-spacing:.08em;
    }
    .panel-list{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .panel-list a{
      padding:8px 11px;
      color:#435069;
      background:#f3f6fb;
      border-radius:9px;
      font-size:13px;
    }
    .panel-list a:hover{color:#fff;background:var(--primary)}
    .dropdown-panel .panel-list{display:grid;gap:2px}
    .dropdown-panel .panel-list a{
      padding:9px 7px;
      overflow:hidden;
      background:transparent;
      border-bottom:1px solid #edf0f5;
      border-radius:0;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .dropdown-panel .panel-list a:hover{color:var(--primary);background:#f6f8fc}
    .mega-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:10px;
    }
    .mega-card{
      min-width:0;
      padding:13px;
      display:grid;
      grid-template-columns:38px minmax(0,1fr);
      align-items:center;
      gap:3px 10px;
      background:#f8f9fc;
      border:1px solid #edf0f5;
      border-radius:12px;
    }
    .mega-card:hover{
      border-color:#b9cdf3;
      background:var(--primary-soft);
      transform:translateY(-1px);
    }
    .mega-card img{
      grid-row:1/4;
      width:38px;
      height:38px;
      object-fit:contain;
      border-radius:8px;
      background:#fff;
    }
    .mega-card strong,.mega-card small{
      min-width:0;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .mega-card strong{font-size:14px;white-space:nowrap}
    .mega-card small{
      color:var(--muted);
      font-size:11px;
      line-height:1.45;
    }
    .mega-footer{
      margin-top:15px;
      padding-top:13px;
      display:block;
      color:var(--primary);
      border-top:1px solid var(--line);
      font-size:13px;
      font-weight:750;
      text-align:right;
    }
    .header-btns{
      display:flex;
      align-items:center;
      gap:9px;
    }
    .member-link,.open-account{
      padding:9px 14px;
      border-radius:10px;
      font-size:14px;
      font-weight:750;
      white-space:nowrap;
    }
    .member-link{color:var(--primary);background:var(--primary-soft)}
    .open-account{color:#fff;background:var(--primary)}
    .member-link:hover{background:#dce8ff}
    .open-account:hover{background:var(--primary-dark)}
    .hamburger{
      width:42px;
      height:42px;
      padding:10px;
      display:none;
      flex-direction:column;
      align-items:center;
      justify-content:center;
      gap:5px;
      cursor:pointer;
      background:#fff;
      border:1px solid var(--line);
      border-radius:10px;
    }
    .hamburger span{
      width:20px;
      height:2px;
      display:block;
      background:var(--ink);
      border-radius:2px;
      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:198;
      visibility:hidden;
      opacity:0;
      background:rgba(4,16,38,.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:199;
      width:min(390px,90vw);
      overflow-y:auto;
      background:#fff;
      box-shadow:-20px 0 60px rgba(0,0,0,.2);
      transform:translateX(105%);
      transition:transform .28s ease;
    }
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{
      min-height:70px;
      padding:13px 18px;
      display:flex;
      align-items:center;
      gap:10px;
      color:#fff;
      background:var(--primary);
    }
    .drawer-head>a{
      padding:7px 10px;
      border:1px solid rgba(255,255,255,.35);
      border-radius:8px;
      font-size:13px;
    }
    .drawer-close{
      width:38px;
      height:38px;
      margin-left:auto;
      color:#fff;
      cursor:pointer;
      background:rgba(255,255,255,.12);
      border:0;
      border-radius:50%;
      font-size:26px;
      line-height:1;
    }
    .drawer-menu{padding:12px 18px 30px}
    .drawer-link,.drawer-toggle{
      width:100%;
      min-height:49px;
      padding:12px 4px;
      display:flex;
      align-items:center;
      color:#293246;
      background:none;
      border:0;
      border-bottom:1px solid var(--line);
      cursor:pointer;
      font-weight:700;
      text-align:left;
    }
    .drawer-toggle{justify-content:space-between}
    .drawer-toggle::after{
      content:"+";
      color:var(--primary);
      font-size:20px;
      font-weight:400;
    }
    .drawer-toggle.active::after{content:"−"}
    .drawer-submenu{
      max-height:0;
      overflow:hidden;
      background:#f7f9fc;
      transition:max-height .3s ease;
    }
    .drawer-submenu.open{
      max-height:720px;
      border-bottom:1px solid var(--line);
    }
    .drawer-submenu a{
      padding:10px 13px;
      display:block;
      color:#58647a;
      border-bottom:1px dashed #e0e5ed;
      font-size:13px;
    }
    .drawer-submenu a:hover{color:var(--primary);background:#eef4ff}

    .video-page{min-width:0}
    .video-page .page-hero{
      position:relative;
      overflow:hidden;
      padding:72px 0 62px;
      color:#fff;
      background:
        radial-gradient(circle at 15% 12%,rgba(243,122,91,.34),transparent 28%),
        radial-gradient(circle at 88% 78%,rgba(81,147,255,.26),transparent 32%),
        linear-gradient(135deg,#071d45 0%,#0b3d91 58%,#08285f 100%);
    }
    .video-page .page-hero::before{
      content:"";
      position:absolute;
      inset:0;
      opacity:.22;
      background-image:linear-gradient(rgba(255,255,255,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.12) 1px,transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(to bottom,#000,transparent);
    }
    .video-page .page-hero-inner{
      position:relative;
      z-index:1;
      max-width:820px;
      margin:auto;
      text-align:center;
    }
    .video-page .eyebrow{
      margin:0 0 12px;
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#ffe4da;
      font-size:13px;
      font-weight:800;
      letter-spacing:.16em;
    }
    .video-page .eyebrow::before{
      content:"";
      width:9px;
      height:9px;
      background:var(--accent);
      border:3px solid rgba(255,255,255,.25);
      border-radius:50%;
      box-shadow:0 0 0 6px rgba(243,122,91,.14);
    }
    .video-page .page-hero h1{
      margin:0;
      font-size:clamp(34px,5vw,58px);
      line-height:1.15;
      letter-spacing:-.035em;
    }
    .video-page .page-hero p{
      max-width:690px;
      margin:18px auto 0;
      color:#d9e6ff;
      font-size:17px;
    }
    .video-page .hero-points{
      margin:25px 0 0;
      padding:0;
      display:flex;
      flex-wrap:wrap;
      justify-content:center;
      gap:10px;
      list-style:none;
    }
    .video-page .hero-points li{
      padding:7px 12px;
      color:#f5f8ff;
      background:rgba(255,255,255,.1);
      border:1px solid rgba(255,255,255,.18);
      border-radius:999px;
      font-size:13px;
      backdrop-filter:blur(8px);
    }
    .video-page .video-content{
      padding:56px 0 80px;
    }
    .video-page .section-heading{
      margin-bottom:22px;
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:24px;
    }
    .video-page .section-heading h2{
      margin:0;
      color:#182239;
      font-size:30px;
      line-height:1.25;
    }
    .video-page .section-heading p{
      max-width:560px;
      margin:7px 0 0;
      color:var(--muted);
    }
    .video-page .category-label{
      padding:7px 12px;
      flex:0 0 auto;
      color:var(--primary);
      background:var(--primary-soft);
      border-radius:999px;
      font-size:13px;
      font-weight:750;
    }
    .video-page .category-filter{
      margin-bottom:34px;
      padding:15px;
      display:flex;
      flex-wrap:wrap;
      gap:9px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:16px;
      box-shadow:0 9px 30px rgba(25,40,70,.05);
    }
    .video-page .category-filter a{
      padding:8px 14px;
      color:#4c5870;
      background:#f4f6fa;
      border:1px solid transparent;
      border-radius:999px;
      font-size:14px;
      font-weight:650;
    }
    .video-page .category-filter a:hover{
      color:#fff;
      background:var(--primary);
      border-color:var(--primary);
    }
    .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;
      display:flex;
      flex-direction:column;
      background:#fff;
      border:1px solid var(--line);
      border-radius:18px;
      box-shadow:0 12px 34px rgba(25,40,70,.07);
      transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
    }
    .video-page .video-card:hover{
      border-color:#bfd0f2;
      box-shadow:0 22px 48px rgba(11,61,145,.14);
      transform:translateY(-5px);
    }
    .video-page .video-cover{
      position:relative;
      overflow:hidden;
      aspect-ratio:16/9;
      background:linear-gradient(145deg,#dae5f8,#b8cbeb);
    }
    .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-button{
      position:absolute;
      top:50%;
      left:50%;
      width:54px;
      height:54px;
      display:grid;
      place-items:center;
      color:#fff;
      background:rgba(11,61,145,.9);
      border:4px solid rgba(255,255,255,.75);
      border-radius:50%;
      box-shadow:0 9px 24px rgba(0,0,0,.24);
      transform:translate(-50%,-50%);
    }
    .video-page .play-button::before{
      content:"";
      margin-left:4px;
      border-top:8px solid transparent;
      border-bottom:8px solid transparent;
      border-left:13px solid #fff;
    }
    .video-page .duration{
      position:absolute;
      right:10px;
      bottom:10px;
      padding:3px 8px;
      color:#fff;
      background:rgba(12,18,29,.82);
      border-radius:6px;
      font-size:12px;
      font-weight:750;
    }
    .video-page .video-card-body{
      min-width:0;
      padding:20px;
      display:flex;
      flex:1;
      flex-direction:column;
    }
    .video-page .video-card-body h3{
      margin:0;
      color:#1d273b;
      font-size:18px;
      line-height:1.45;
    }
    .video-page .video-card-body h3 a:hover{color:var(--primary)}
    .video-page .video-card-body p{
      margin:10px 0 18px;
      display:-webkit-box;
      overflow:hidden;
      color:var(--muted);
      font-size:14px;
      line-height:1.75;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:3;
    }
    .video-page .watch-link{
      margin-top:auto;
      display:inline-flex;
      align-items:center;
      gap:7px;
      color:var(--primary);
      font-size:14px;
      font-weight:800;
    }
    .video-page .watch-link::after{
      content:"→";
      transition:transform .2s ease;
    }
    .video-page .watch-link:hover::after{transform:translateX(4px)}
    .video-page .pagination{
      margin-top:44px;
      display:flex;
      flex-wrap:wrap;
      justify-content:center;
      gap:8px;
    }
    .video-page .pagination a{
      min-width:42px;
      min-height:42px;
      padding:8px 13px;
      display:grid;
      place-items:center;
      color:#46516a;
      background:#fff;
      border:1px solid var(--line);
      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;
      background:var(--primary);
      border-color:var(--primary);
    }
    .video-page .video-note{
      margin-top:50px;
      padding:27px 30px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:28px;
      color:#fff;
      background:linear-gradient(120deg,#252a34,#353d4b);
      border-radius:20px;
      box-shadow:var(--shadow);
    }
    .video-page .video-note h2{margin:0 0 5px;font-size:22px}
    .video-page .video-note p{margin:0;color:#cbd1db;font-size:14px}
    .video-page .video-note a{
      padding:11px 17px;
      flex:0 0 auto;
      color:#fff;
      background:var(--accent);
      border-radius:10px;
      font-weight:800;
    }

    .footer{
      padding:56px 0 0;
      color:#cbd5e8;
      background:#071b3c;
    }
    .footer-grid{
      padding-bottom:42px;
      display:grid;
      grid-template-columns:1.4fr 1fr 1fr 1fr;
      gap:46px;
    }
    .footer h3{
      margin:0 0 15px;
      color:#fff;
      font-size:15px;
    }
    .footer-brand strong{
      display:block;
      margin-bottom:13px;
      color:#fff;
      font-size:22px;
    }
    .footer p{margin:0 0 13px;color:#aebbd1;font-size:13px}
    .footer-grid>div>a{
      margin:0 0 9px;
      display:block;
      color:#cbd5e8;
      font-size:13px;
    }
    .footer-grid>div>a:hover{color:#fff;text-decoration:underline}
    .footer-bottom{
      min-height:66px;
      padding:17px 0;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      color:#94a3bb;
      border-top:1px solid rgba(255,255,255,.11);
      font-size:12px;
    }

    @media (max-width:1080px){
      .main-nav{display:none}
      .hamburger{display:flex}
      .header-inner{min-height:70px}
      .logo{min-width:0;margin-right:auto}
      .video-page .video-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:32px}
      .footer-grid>div:last-child{grid-column:2/4}
    }
    @media (max-width:760px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{padding:8px 0;align-items:flex-start}
      .topbar-links{display:grid;gap:2px;text-align:right}
      .member-link{display:none}
      .logo span{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
      .video-page .page-hero{padding:54px 0 48px}
      .video-page .page-hero p{font-size:15px}
      .video-page .video-content{padding:42px 0 62px}
      .video-page .section-heading{align-items:flex-start;flex-direction:column;gap:12px}
      .video-page .section-heading h2{font-size:25px}
      .video-page .video-grid{grid-template-columns:1fr}
      .video-page .video-note{align-items:flex-start;flex-direction:column}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-grid>div:last-child{grid-column:auto}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{align-items:flex-start;flex-direction:column;justify-content:center}
    }
    @media (max-width:480px){
      .topbar .container>span{display:none}
      .topbar-links{width:100%;display:flex;justify-content:space-between;text-align:left}
      .header-inner{gap:8px}
      .logo img{width:38px;height:38px}
      .logo span{max-width:110px;font-size:16px}
      .open-account{padding:8px 11px}
      .video-page .hero-points{gap:7px}
      .video-page .hero-points li{font-size:12px}
      .video-page .category-filter{padding:11px}
      .video-page .video-card-body{padding:17px}
      .footer-grid{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
    }