:root{
      --primary:#0B3D91;
      --primary-dark:#06265e;
      --primary-soft:#eaf1fc;
      --ink:#111827;
      --muted:#64748b;
      --line:#dce3ed;
      --surface:#ffffff;
      --canvas:#f5f7fb;
      --danger:#c72c2c;
      --radius:18px;
      --shadow:0 18px 48px rgba(15,23,42,.09);
    }

    *{
      box-sizing:border-box;
    }

    html{
      scroll-behavior:smooth;
    }

    body{
      margin:0;
      color:var(--ink);
      background:var(--canvas);
      font-family:Inter,Arial,Helvetica,sans-serif;
      line-height:1.65;
    }

    body.drawer-lock{
      overflow:hidden;
    }

    img{
      display:block;
      max-width:100%;
    }

    a{
      color:inherit;
      text-decoration:none;
    }

    button,
    input,
    textarea,
    select{
      font:inherit;
    }

    .container{
      width:min(1180px,calc(100% - 40px));
      margin-inline:auto;
    }

    .topbar{
      color:#dbeafe;
      background:var(--primary-dark);
      font-size:13px;
    }

    .topbar-inner{
      min-height:36px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }

    .topbar-contact{
      display:flex;
      align-items:center;
      gap:18px;
    }

    .topbar a:hover{
      color:#fff;
    }

    .header{
      position:relative;
      z-index:50;
      color:var(--ink);
      background:rgba(255,255,255,.98);
      border-bottom:1px solid var(--line);
      box-shadow:0 5px 18px rgba(15,23,42,.04);
    }

    .header-inner{
      min-height:78px;
      display:flex;
      align-items:center;
      gap:28px;
    }

    .logo{
      flex:0 0 auto;
      display:inline-flex;
      align-items:center;
      gap:10px;
      font-weight:850;
      letter-spacing:-.02em;
    }

    .logo img{
      width:40px;
      height:40px;
      object-fit:contain;
      border-radius:10px;
    }

    .main-nav{
      flex:1 1 auto;
      align-self:stretch;
    }

    .nav-list{
      height:100%;
      margin:0;
      padding:0;
      display:flex;
      align-items:stretch;
      justify-content:center;
      list-style:none;
    }

    .nav-item{
      position:relative;
      display:flex;
      align-items:center;
    }

    .nav-link{
      height:100%;
      padding:0 13px;
      display:flex;
      align-items:center;
      color:#334155;
      font-size:14px;
      font-weight:750;
      white-space:nowrap;
    }

    .nav-link:hover,
    .nav-item:focus-within > .nav-link{
      color:var(--primary);
    }

    .nav-item::after{
      content:"";
      position:absolute;
      right:0;
      bottom:-8px;
      left:0;
      height:9px;
    }

    .dropdown-panel,
    .mega-menu{
      position:absolute;
      top:100%;
      visibility:hidden;
      opacity:0;
      transform:translateY(8px);
      pointer-events:none;
      background:#fff;
      border:1px solid var(--line);
      border-radius:0 0 18px 18px;
      box-shadow:var(--shadow);
      transition:.2s ease;
    }

    .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:translateY(0);
      pointer-events:auto;
    }

    .dropdown-panel{
      left:0;
      width:330px;
      padding:22px;
    }

    .dropdown-title,
    .mega-title{
      margin:0 0 12px;
      color:var(--ink);
      font-size:18px;
      line-height:1.25;
    }

    .dropdown-list{
      display:grid;
      gap:5px;
    }

    .dropdown-list a{
      padding:9px 0;
      color:#475569;
      border-bottom:1px solid #edf1f6;
      font-size:14px;
    }

    .dropdown-list a:hover{
      color:var(--primary);
    }

    .panel-more{
      margin-top:15px;
      display:inline-flex;
      color:var(--primary);
      font-size:14px;
      font-weight:800;
    }

    .mega-menu{
      left:50%;
      width:min(980px,calc(100vw - 48px));
      padding:24px;
      transform:translate(-50%,8px);
    }

    .nav-item:hover .mega-menu,
    .nav-item:focus-within .mega-menu{
      transform:translate(-50%,0);
    }

    .mega-grid{
      display:grid;
      grid-template-columns:220px minmax(0,1fr);
      gap:24px;
    }

    .mega-intro{
      padding:20px;
      color:#fff;
      background:linear-gradient(145deg,var(--primary),var(--primary-dark));
      border-radius:15px;
    }

    .mega-intro p{
      margin:0 0 16px;
      color:#dbeafe;
      font-size:13px;
    }

    .mega-intro a{
      font-size:14px;
      font-weight:800;
      text-decoration:underline;
      text-underline-offset:4px;
    }

    .mega-cards{
      min-width:0;
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:12px;
    }

    .mega-card{
      min-width:0;
      padding:13px;
      display:block;
      background:#f8fafc;
      border:1px solid #e7ecf3;
      border-radius:13px;
      transition:.18s ease;
    }

    .mega-card:hover{
      border-color:#abc3ea;
      transform:translateY(-2px);
    }

    .mega-card img{
      width:42px;
      height:42px;
      margin-bottom:9px;
      object-fit:contain;
      border-radius:9px;
    }

    .mega-card img.video-thumb,
    .mega-card img.product-thumb{
      width:100%;
      height:82px;
      object-fit:cover;
    }

    .mega-card img.tool-icon{
      object-fit:contain;
    }

    .mega-card strong{
      display:block;
      overflow:hidden;
      color:#172033;
      font-size:13px;
      line-height:1.35;
      text-overflow:ellipsis;
      white-space:nowrap;
    }

    .mega-card p{
      margin:6px 0 0;
      overflow:hidden;
      color:var(--muted);
      font-size:12px;
      line-height:1.45;
      display:-webkit-box;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:2;
    }

    .mega-meta{
      margin-top:8px;
      display:flex;
      flex-wrap:wrap;
      justify-content:space-between;
      gap:6px;
      color:var(--primary);
      font-size:11px;
      font-weight:750;
    }

    .category-links{
      margin-bottom:18px;
      padding-bottom:16px;
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      border-bottom:1px solid var(--line);
    }

    .category-links a{
      padding:7px 12px;
      color:#334155;
      background:var(--primary-soft);
      border-radius:999px;
      font-size:12px;
      font-weight:750;
    }

    .category-links a:hover{
      color:#fff;
      background:var(--primary);
    }

    .header-btns{
      flex:0 0 auto;
      display:flex;
      align-items:center;
      gap:10px;
      white-space:nowrap;
    }

    .open-account{
      padding:10px 16px;
      color:#fff;
      background:var(--primary);
      border-radius:10px;
      font-size:13px;
      font-weight:800;
    }

    .open-account:hover{
      background:var(--primary-dark);
    }

    .hamburger{
      width:44px;
      height:44px;
      padding:10px;
      display:none;
      align-items:center;
      justify-content:center;
      flex-direction:column;
      gap:5px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:10px;
      cursor:pointer;
    }

    .hamburger span{
      width:21px;
      height:2px;
      display:block;
      background:var(--ink);
      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;
      z-index:90;
      inset:0;
      visibility:hidden;
      opacity:0;
      background:rgba(2,8,23,.58);
      transition:.25s ease;
    }

    .drawer-overlay.open{
      visibility:visible;
      opacity:1;
    }

    .mobile-drawer{
      position:fixed;
      z-index:100;
      top:0;
      right:0;
      width:min(390px,92vw);
      height:100dvh;
      overflow-y:auto;
      background:#fff;
      box-shadow:-20px 0 60px rgba(2,8,23,.22);
      transform:translateX(105%);
      transition:transform .28s ease;
    }

    .mobile-drawer.open{
      transform:translateX(0);
    }

    .drawer-head{
      min-height:76px;
      padding:15px 18px;
      display:flex;
      align-items:center;
      gap:12px;
      color:#fff;
      background:var(--primary-dark);
    }

    .drawer-head > a{
      padding:8px 11px;
      border:1px solid rgba(255,255,255,.35);
      border-radius:8px;
      font-size:13px;
      font-weight:750;
    }

    .drawer-close{
      width:38px;
      height:38px;
      margin-left:auto;
      color:#fff;
      background:transparent;
      border:0;
      font-size:29px;
      line-height:1;
      cursor:pointer;
    }

    .drawer-menu{
      padding:14px 18px 30px;
    }

    .drawer-link,
    .drawer-toggle{
      width:100%;
      padding:14px 4px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      color:#1e293b;
      background:transparent;
      border:0;
      border-bottom:1px solid #e9eef5;
      font-weight:800;
      text-align:left;
      cursor:pointer;
    }

    .drawer-toggle::after{
      content:"+";
      color:var(--primary);
      font-size:20px;
    }

    .drawer-toggle.active::after{
      content:"−";
    }

    .drawer-submenu{
      max-height:0;
      overflow:hidden;
      padding:0 10px;
      background:#f8fafc;
      transition:max-height .3s ease;
    }

    .drawer-submenu.open{
      max-height:700px;
    }

    .drawer-submenu a{
      padding:11px 6px;
      display:block;
      color:#526075;
      border-bottom:1px solid #e8edf4;
      font-size:13px;
    }

    .video-detail-main{
      min-width:0;
    }

    .video-detail-main .video-hero{
      padding:58px 0 42px;
      color:#fff;
      background:
        radial-gradient(circle at 82% 16%,rgba(59,130,246,.42),transparent 25%),
        linear-gradient(135deg,#071327 0%,var(--primary-dark) 55%,#0B3D91 100%);
    }

    .video-detail-main .breadcrumb{
      margin-bottom:22px;
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      color:#bfdbfe;
      font-size:13px;
    }

    .video-detail-main .breadcrumb a:hover{
      color:#fff;
    }

    .video-detail-main .video-kicker{
      margin-bottom:12px;
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#dbeafe;
      font-size:12px;
      font-weight:850;
      letter-spacing:.12em;
      text-transform:uppercase;
    }

    .video-detail-main .video-kicker::before{
      content:"";
      width:25px;
      height:3px;
      background:#ef4444;
      border-radius:999px;
    }

    .video-detail-main h1{
      max-width:940px;
      margin:0;
      font-size:clamp(32px,5vw,64px);
      line-height:1.05;
      letter-spacing:-.045em;
    }

    .video-detail-main .lead{
      max-width:820px;
      margin:20px 0 0;
      color:#dbeafe;
      font-size:17px;
    }

    .video-detail-main .video-meta{
      margin-top:24px;
      display:flex;
      flex-wrap:wrap;
      gap:9px;
    }

    .video-detail-main .video-meta span{
      padding:7px 11px;
      color:#e0ecff;
      background:rgba(255,255,255,.1);
      border:1px solid rgba(255,255,255,.18);
      border-radius:999px;
      font-size:12px;
    }

    .video-detail-main .video-workspace{
      padding:42px 0 72px;
    }

    .video-detail-main .player-shell{
      overflow:hidden;
      color:#fff;
      background:#030712;
      border:1px solid #172033;
      border-radius:22px;
      box-shadow:0 25px 70px rgba(2,8,23,.22);
    }

    .video-detail-main .player-top{
      padding:12px 16px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:15px;
      color:#a8b3c7;
      background:#0b1220;
      border-bottom:1px solid #1e293b;
      font-size:12px;
    }

    .video-detail-main .player-status{
      display:flex;
      align-items:center;
      gap:8px;
    }

    .video-detail-main .player-status::before{
      content:"";
      width:8px;
      height:8px;
      background:#ef4444;
      border-radius:50%;
      box-shadow:0 0 0 5px rgba(239,68,68,.14);
    }

    .video-detail-main .player-frame{
      width:100%;
      min-height:clamp(260px,56vw,660px);
      display:grid;
      place-items:center;
      overflow:hidden;
      background:#000;
    }

    .video-detail-main .player-frame iframe,
    .video-detail-main .player-frame video,
    .video-detail-main .player-frame embed,
    .video-detail-main .player-frame object{
      width:100%;
      height:100%;
      min-height:clamp(260px,56vw,660px);
      border:0;
    }

    .video-detail-main .player-frame img{
      width:100%;
      height:100%;
      min-height:clamp(260px,56vw,660px);
      object-fit:cover;
    }

    .video-detail-main .detail-grid{
      margin-top:28px;
      display:grid;
      grid-template-columns:minmax(0,1fr) 320px;
      gap:28px;
      align-items:start;
    }

    .video-detail-main .video-panel,
    .video-detail-main .info-panel{
      min-width:0;
      padding:28px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:0 12px 35px rgba(15,23,42,.05);
    }

    .video-detail-main .video-panel h2,
    .video-detail-main .info-panel h2,
    .video-detail-main .related-head h2{
      margin:0;
      color:#111827;
      font-size:24px;
      line-height:1.2;
      letter-spacing:-.025em;
    }

    .video-detail-main .video-description{
      margin-top:17px;
      color:#475569;
      font-size:16px;
    }

    .video-detail-main .video-content{
      min-width:0;
      max-width:100%;
      margin-top:28px;
      padding-top:26px;
      overflow-x:auto;
      color:#334155;
      border-top:1px solid var(--line);
    }

    .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 iframe{
      width:100%;
    }

    .video-detail-main .video-content table{
      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 .info-list{
      margin:18px 0 0;
      padding:0;
      list-style:none;
    }

    .video-detail-main .info-list li{
      padding:12px 0;
      display:grid;
      gap:3px;
      border-bottom:1px solid #e9eef5;
    }

    .video-detail-main .info-list span{
      color:var(--muted);
      font-size:12px;
      font-weight:750;
      text-transform:uppercase;
      letter-spacing:.06em;
    }

    .video-detail-main .info-list strong{
      overflow-wrap:anywhere;
      color:#1e293b;
      font-size:14px;
    }

    .video-detail-main .source-link{
      margin-top:20px;
      padding:11px 15px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      color:#fff;
      background:var(--primary);
      border-radius:10px;
      font-size:13px;
      font-weight:800;
    }

    .video-detail-main .source-link:hover{
      background:var(--primary-dark);
    }

    .video-detail-main .related-section{
      padding:70px 0;
      background:#eef3fa;
      border-top:1px solid var(--line);
    }

    .video-detail-main .related-head{
      margin-bottom:25px;
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:20px;
    }

    .video-detail-main .related-head p{
      max-width:650px;
      margin:8px 0 0;
      color:var(--muted);
    }

    .video-detail-main .more-videos{
      flex:0 0 auto;
      padding:10px 15px;
      color:var(--primary);
      background:#fff;
      border:1px solid #b9cbe8;
      border-radius:10px;
      font-size:13px;
      font-weight:850;
    }

    .video-detail-main .related-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:20px;
    }

    .video-detail-main .related-card{
      min-width:0;
      overflow:hidden;
      background:#fff;
      border:1px solid var(--line);
      border-radius:16px;
      box-shadow:0 12px 32px rgba(15,23,42,.06);
      transition:.2s ease;
    }

    .video-detail-main .related-card:hover{
      transform:translateY(-4px);
      box-shadow:0 18px 42px rgba(15,23,42,.11);
    }

    .video-detail-main .related-cover{
      position:relative;
      aspect-ratio:16/9;
      overflow:hidden;
      background:#0f172a;
    }

    .video-detail-main .related-cover img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:transform .3s ease;
    }

    .video-detail-main .related-card:hover .related-cover img{
      transform:scale(1.04);
    }

    .video-detail-main .play-mark{
      position:absolute;
      inset:auto auto 14px 14px;
      width:42px;
      height:42px;
      display:grid;
      place-items:center;
      color:#fff;
      background:rgba(11,61,145,.92);
      border:2px solid rgba(255,255,255,.7);
      border-radius:50%;
      font-size:13px;
    }

    .video-detail-main .duration{
      position:absolute;
      right:10px;
      bottom:10px;
      padding:4px 8px;
      color:#fff;
      background:rgba(2,8,23,.82);
      border-radius:6px;
      font-size:11px;
      font-weight:750;
    }

    .video-detail-main .related-body{
      padding:18px;
    }

    .video-detail-main .related-body h3{
      margin:0;
      overflow:hidden;
      color:#172033;
      font-size:17px;
      line-height:1.35;
      display:-webkit-box;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:2;
    }

    .video-detail-main .related-body p{
      margin:9px 0 0;
      overflow:hidden;
      color:var(--muted);
      font-size:13px;
      line-height:1.55;
      display:-webkit-box;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:2;
    }

    .footer{
      color:#cbd5e1;
      background:#071327;
    }

    .footer-main{
      padding:64px 0 45px;
      display:grid;
      grid-template-columns:1.45fr 1fr 1fr 1fr;
      gap:42px;
    }

    .footer .logo{
      color:#fff;
    }

    .footer-brand p{
      max-width:390px;
      margin:18px 0;
      color:#94a3b8;
      font-size:14px;
    }

    .social-links{
      color:#fff;
    }

    .footer h3{
      margin:0 0 18px;
      color:#fff;
      font-size:15px;
    }

    .footer-links,
    .footer-contact{
      display:grid;
      gap:10px;
      color:#94a3b8;
      font-size:13px;
    }

    .footer a:hover{
      color:#fff;
    }

    .footer-bottom{
      min-height:72px;
      padding:18px 0;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      color:#7f8da3;
      border-top:1px solid rgba(148,163,184,.18);
      font-size:12px;
    }

    .footer-bottom-links{
      display:flex;
      flex-wrap:wrap;
      gap:16px;
    }

    @media (max-width:1080px){
      .main-nav{
        display:none;
      }

      .hamburger{
        display:flex;
      }

      .header-inner{
        min-height:72px;
      }

      .header-btns{
        margin-left:auto;
      }

      .video-detail-main .detail-grid{
        grid-template-columns:minmax(0,1fr) 280px;
      }

      .footer-main{
        grid-template-columns:repeat(2,minmax(0,1fr));
      }
    }

    @media (max-width:760px){
      .container{
        width:min(100% - 28px,1180px);
      }

      .topbar-inner{
        padding:7px 0;
        align-items:flex-start;
        flex-direction:column;
        gap:3px;
      }

      .topbar-contact{
        flex-wrap:wrap;
        gap:4px 14px;
      }

      .header-btns > .open-account{
        display:none;
      }

      .logo span{
        max-width:150px;
        overflow:hidden;
        text-overflow:ellipsis;
        white-space:nowrap;
      }

      .video-detail-main .video-hero{
        padding:42px 0 34px;
      }

      .video-detail-main .lead{
        font-size:15px;
      }

      .video-detail-main .video-workspace{
        padding:24px 0 50px;
      }

      .video-detail-main .player-shell{
        border-radius:14px;
      }

      .video-detail-main .detail-grid{
        grid-template-columns:1fr;
        gap:18px;
      }

      .video-detail-main .video-panel,
      .video-detail-main .info-panel{
        padding:21px;
      }

      .video-detail-main .related-section{
        padding:50px 0;
      }

      .video-detail-main .related-head{
        align-items:flex-start;
        flex-direction:column;
      }

      .video-detail-main .related-grid{
        grid-template-columns:1fr;
      }

      .footer-main{
        padding:48px 0 34px;
        grid-template-columns:1fr;
        gap:32px;
      }

      .footer-bottom{
        align-items:flex-start;
        flex-direction:column;
      }
    }

    @media (max-width:430px){
      .header-btns{
        gap:6px;
      }

      .header-btns > :not(.hamburger){
        max-width:105px;
        overflow:hidden;
      }

      .video-detail-main .video-meta{
        gap:6px;
      }

      .video-detail-main .player-top{
        align-items:flex-start;
        flex-direction:column;
      }
    }