:root{
      --theme:#0B3D91;
      --ink:#14213d;
      --muted:#68758a;
      --line:#e5eaf2;
      --soft:#f5f8fc;
      --white:#fff;
      --shadow:0 16px 40px rgba(20,44,84,.10);
      --radius:16px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:#fff;
      font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;
      line-height:1.7;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .topbar{
      color:#dce8ff;
      background:#071d45;
      font-size:13px;
    }
    .topbar .container{
      min-height:36px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
    }
    .topbar-links{display:flex;gap:22px}
    .topbar a{color:#dce8ff}
    .header{
      position:relative;
      z-index:20;
      background:#fff;
      border-bottom:1px solid var(--line);
    }
    .header-inner{
      min-height:76px;
      display:flex;
      align-items:center;
      gap:32px;
    }
    .logo{
      display:inline-flex;
      align-items:center;
      gap:10px;
      flex-shrink:0;
      color:var(--ink);
      font-size:19px;
      font-weight:800;
      white-space:nowrap;
    }
    .logo img{
      width:38px;
      height:38px;
      object-fit:contain;
      border-radius:9px;
    }
    .main-nav{margin-left:auto}
    .nav-list{
      display:flex;
      align-items:stretch;
      gap:4px;
      list-style:none;
      margin:0;
      padding:0;
    }
    .nav-item{position:relative}
    .nav-link{
      min-height:76px;
      display:flex;
      align-items:center;
      gap:6px;
      padding:0 13px;
      color:#35445d;
      font-size:14px;
      font-weight:600;
      white-space:nowrap;
    }
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}
    .arrow{
      width:7px;
      height: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:calc(100% - 1px);
      left:50%;
      transform:translateX(-50%) translateY(8px);
      width:250px;
      padding:18px;
      opacity:0;
      visibility:hidden;
      pointer-events:none;
      background:#fff;
      border:1px solid var(--line);
      border-radius:0 0 14px 14px;
      box-shadow:var(--shadow);
      transition:.2s ease;
    }
    .mega-menu{width:780px}
    .nav-item:hover>.dropdown-panel,
    .nav-item:focus-within>.dropdown-panel,
    .nav-item:hover>.mega-menu,
    .nav-item:focus-within>.mega-menu{
      opacity:1;
      visibility:visible;
      pointer-events:auto;
      transform:translateX(-50%) translateY(0);
    }
    .dropdown-panel:before,.mega-menu:before{
      content:"";
      position:absolute;
      left:0;
      right:0;
      top:-12px;
      height:12px;
    }
    .dropdown-panel>a,.mega-list>a{
      display:block;
      padding:8px 9px;
      border-radius:8px;
      color:#40516b;
      font-size:13px;
    }
    .dropdown-panel>a:hover,.mega-list>a:hover{
      color:var(--theme);
      background:#f0f5ff;
    }
    .mega-grid{
      display:grid;
      grid-template-columns:1.15fr 1fr 1fr;
      gap:22px;
    }
    .mega-title{
      margin:0 0 10px;
      color:var(--theme);
      font-size:13px;
      font-weight:800;
    }
    .mega-list{display:grid;gap:2px}
    .mega-list img{
      display:inline-block;
      width:20px;
      height:20px;
      margin-right:5px;
      vertical-align:middle;
      object-fit:contain;
    }
    .mega-list small,.mega-list strong{display:block}
    .mega-list small{color:var(--muted);font-size:11px}
    .mega-broker,.mega-video{
      display:flex;
      align-items:center;
      gap:9px;
      padding:7px;
      border-radius:9px;
    }
    .mega-broker:hover,.mega-video:hover{background:#f2f6fc}
    .mega-broker img,.mega-video img{
      width:32px;
      height:32px;
      flex:0 0 32px;
      object-fit:cover;
      border-radius:7px;
      background:#edf2f8;
    }
    .mega-broker strong,.mega-video strong{
      display:block;
      overflow:hidden;
      text-overflow:ellipsis;
      white-space:nowrap;
      font-size:12px;
    }
    .mega-broker small,.mega-video small{
      display:block;
      color:var(--muted);
      font-size:10px;
    }
    .mega-footer{
      display:block;
      margin:14px -18px -18px;
      padding:11px 18px;
      color:var(--theme);
      background:#f4f7fc;
      border-top:1px solid var(--line);
      font-size:13px;
      font-weight:700;
    }
    .header-btns{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .member-entry{
      color:var(--theme);
      font-size:13px;
      font-weight:700;
    }
    .open-account{
      padding:9px 16px;
      color:#fff;
      background:var(--theme);
      border-radius:8px;
      font-size:13px;
      font-weight:700;
    }
    .hamburger{
      display:none;
      width:42px;
      height:40px;
      padding:9px;
      border:1px solid var(--line);
      border-radius:8px;
      background:#fff;
      cursor:pointer;
    }
    .hamburger span{
      display:block;
      width:22px;
      height:2px;
      margin:4px auto;
      background:var(--ink);
      transition:.2s;
    }
    .hamburger.active span:first-child{transform:translateY(6px) rotate(45deg)}
    .hamburger.active span:nth-child(2){opacity:0}
    .hamburger.active span:last-child{transform:translateY(-6px) rotate(-45deg)}
    .drawer-overlay{
      position:fixed;
      inset:0;
      z-index:40;
      background:rgba(4,18,43,.48);
      opacity:0;
      visibility:hidden;
      transition:.2s;
    }
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{
      position:fixed;
      top:0;
      right:0;
      z-index:41;
      width:min(390px,88vw);
      height:100vh;
      overflow:auto;
      background:#fff;
      transform:translateX(100%);
      transition:.25s ease;
      box-shadow:-12px 0 35px rgba(0,0,0,.15);
    }
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{
      display:flex;
      align-items:center;
      gap:14px;
      padding:20px;
      color:#fff;
      background:var(--theme);
      font-weight:700;
    }
    .drawer-head span{margin-right:auto}
    .drawer-head a{padding:5px 12px;border:1px solid rgba(255,255,255,.6);border-radius:6px;font-size:13px}
    .drawer-close{
      padding:0;
      border:0;
      color:#fff;
      background:transparent;
      font-size:28px;
      line-height:1;
      cursor:pointer;
    }
    .drawer-menu{padding:13px 20px 30px}
    .drawer-link,.drawer-toggle{
      display:block;
      width:100%;
      padding:13px 3px;
      border:0;
      border-bottom:1px solid var(--line);
      color:var(--ink);
      background:transparent;
      text-align:left;
      font:inherit;
      cursor:pointer;
    }
    .drawer-toggle:after{
      content:"+";
      float:right;
      color:var(--theme);
      font-weight:700;
    }
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{
      display:none;
      padding:5px 12px;
      background:var(--soft);
      border-radius:8px;
    }
    .drawer-submenu.open{display:block}
    .drawer-submenu a{
      display:block;
      padding:8px 4px;
      color:#52627b;
      font-size:13px;
    }
    .footer{
      margin-top:70px;
      color:#d8e4fa;
      background:#081d42;
    }
    .footer-main{
      display:grid;
      grid-template-columns:1.4fr 1fr 1fr 1.1fr;
      gap:38px;
      padding:48px 0 42px;
    }
    .footer .logo{color:#fff;margin-bottom:14px}
    .footer-brand p{
      max-width:310px;
      margin:0;
      color:#9db0d0;
      font-size:13px;
    }
    .footer h3{
      margin:0 0 14px;
      color:#fff;
      font-size:15px;
    }
    .footer-links,.footer-contact{display:grid;gap:8px}
    .footer-links a,.footer-contact a,.footer-contact span{
      color:#aebed8;
      font-size:13px;
    }
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-bottom{
      padding:16px 0;
      border-top:1px solid rgba(255,255,255,.1);
      color:#91a5c7;
      font-size:12px;
    }

    .video-page{
      min-height:540px;
      padding:64px 0 20px;
      background:
        radial-gradient(circle at 8% 12%,rgba(11,61,145,.08),transparent 28%),
        linear-gradient(180deg,#f8faff 0%,#fff 65%);
    }
    .video-page .page-heading{text-align:center;max-width:700px;margin:0 auto 38px}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      margin-bottom:12px;
      color:var(--theme);
      font-size:13px;
      font-weight:800;
      letter-spacing:.12em;
    }
    .eyebrow:before{
      content:"";
      width:24px;
      height:2px;
      background:var(--theme);
    }
    .video-page h1{
      margin:0 0 12px;
      color:#102b5a;
      font-size:clamp(30px,4vw,48px);
      line-height:1.2;
    }
    .page-heading p{
      margin:0;
      color:var(--muted);
      font-size:15px;
    }
    .video-filter{
      display:flex;
      justify-content:center;
      flex-wrap:wrap;
      gap:9px;
      margin:0 auto 30px;
    }
    .video-filter a{
      padding:7px 15px;
      color:#51617a;
      background:#fff;
      border:1px solid var(--line);
      border-radius:999px;
      font-size:13px;
    }
    .video-filter a:hover,.video-filter a.active{
      color:#fff;
      background:var(--theme);
      border-color:var(--theme);
    }
    .video-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:24px;
    }
    .video-card{
      overflow:hidden;
      background:#fff;
      border:1px solid #e6ebf3;
      border-radius:var(--radius);
      box-shadow:0 8px 24px rgba(26,54,95,.06);
      transition:transform .2s,box-shadow .2s;
    }
    .video-card:hover{
      transform:translateY(-5px);
      box-shadow:var(--shadow);
    }
    .video-cover{
      position:relative;
      aspect-ratio:16/9;
      overflow:hidden;
      background:#dbe5f4;
    }
    .video-cover img{width:100%;height:100%;object-fit:cover}
    .video-cover:after{
      content:"▶";
      position:absolute;
      left:18px;
      bottom:16px;
      display:grid;
      place-items:center;
      width:40px;
      height:40px;
      padding-left:2px;
      color:#fff;
      background:rgba(11,61,145,.9);
      border:2px solid rgba(255,255,255,.8);
      border-radius:50%;
      font-size:15px;
    }
    .duration{
      position:absolute;
      right:12px;
      bottom:12px;
      padding:2px 7px;
      color:#fff;
      background:rgba(9,24,51,.78);
      border-radius:5px;
      font-size:11px;
    }
    .video-body{padding:18px 19px 20px}
    .video-body h2{
      margin:0 0 8px;
      color:#172e57;
      font-size:17px;
      line-height:1.45;
    }
    .video-body h2 a:hover{color:var(--theme)}
    .video-body p{
      display:-webkit-box;
      min-height:48px;
      margin:0 0 13px;
      overflow:hidden;
      color:#718097;
      font-size:13px;
      line-height:1.85;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:2;
    }
    .video-meta{
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding-top:12px;
      color:#8b98aa;
      border-top:1px solid var(--line);
      font-size:12px;
    }
    .video-meta a{
      color:var(--theme);
      font-weight:700;
    }
    .pagination{
      display:flex;
      justify-content:center;
      flex-wrap:wrap;
      gap:7px;
      margin-top:40px;
    }
    .pagination a{
      min-width:34px;
      padding:6px 11px;
      color:#53627a;
      border:1px solid var(--line);
      border-radius:7px;
      text-align:center;
      font-size:13px;
    }
    .pagination a:hover,.pagination a.current,.pagination a.active{
      color:#fff;
      background:var(--theme);
      border-color:var(--theme);
    }
    @media (max-width:1050px){
      .header-inner{gap:16px}
      .nav-link{padding:0 8px;font-size:13px}
      .mega-menu{width:700px}
    }
    @media (max-width:820px){
      .container{width:min(100% - 30px,680px)}
      .topbar .container{padding:7px 0;align-items:flex-start}
      .topbar-links{gap:10px;flex-direction:column}
      .main-nav{display:none}
      .member-entry{display:none}
      .hamburger{display:block}
      .footer-main{grid-template-columns:repeat(2,1fr);gap:28px}
      .video-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:560px){
      .header-inner{min-height:66px}
      .logo{font-size:17px}
      .logo img{width:34px;height:34px}
      .open-account{padding:8px 11px;font-size:12px}
      .video-page{padding-top:42px}
      .video-page h1{font-size:32px}
      .video-grid{grid-template-columns:1fr;gap:18px}
      .footer-main{grid-template-columns:1fr;padding:36px 0}
      .footer{margin-top:45px}
    }