:root{
      --theme:#0B3D91;
      --theme-dark:#072b68;
      --theme-soft:#eaf1fc;
      --accent:#2563eb;
      --ink:#172033;
      --muted:#687386;
      --line:#dfe5ed;
      --surface:#ffffff;
      --surface-soft:#f5f7fa;
      --page:#eef1f5;
      --danger:#c53b3b;
      --radius:18px;
      --shadow:0 18px 48px rgba(20,35,60,.12);
      --container:1220px;
    }

    *{
      box-sizing:border-box;
    }

    html{
      scroll-behavior:smooth;
    }

    body{
      margin:0;
      color:var(--ink);
      background:var(--page);
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC","PingFang TC","Microsoft JhengHei",sans-serif;
      line-height:1.65;
      overflow-wrap:anywhere;
    }

    body.drawer-lock{
      overflow:hidden;
    }

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

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

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

    button,
    a{
      -webkit-tap-highlight-color:transparent;
    }

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

    .skip-link{
      position:fixed;
      top:12px;
      left:12px;
      z-index:3000;
      padding:10px 16px;
      color:#fff;
      background:var(--theme);
      border-radius:10px;
      transform:translateY(-150%);
      transition:transform .2s ease;
    }

    .skip-link:focus{
      transform:translateY(0);
    }

    .topbar{
      color:#dce8ff;
      background:#071a38;
      font-size:13px;
    }

    .topbar-inner{
      min-height:38px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }

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

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

    .header{
      position:relative;
      z-index:100;
      background:rgba(255,255,255,.98);
      border-bottom:1px solid var(--line);
      box-shadow:0 4px 20px rgba(22,32,51,.05);
    }

    .header-inner{
      min-height:78px;
      display:flex;
      align-items:center;
      gap:24px;
    }

    .logo{
      min-width:0;
      display:inline-flex;
      align-items:center;
      gap:11px;
      font-weight:800;
      color:var(--theme-dark);
    }

    .logo img{
      width:42px;
      height:42px;
      object-fit:contain;
      border-radius:10px;
    }

    .logo span{
      max-width:180px;
      overflow:hidden;
      text-overflow:ellipsis;
      white-space:nowrap;
    }

    .main-nav{
      flex:1;
      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;
      gap:7px;
      color:#303b4f;
      font-size:14px;
      font-weight:700;
      white-space:nowrap;
      transition:color .2s ease,background .2s ease;
    }

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

    .has-arrow::after{
      content:"";
      width:6px;
      height:6px;
      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%;
      z-index:120;
      color:var(--ink);
      background:#fff;
      border:1px solid var(--line);
      border-radius:0 0 18px 18px;
      box-shadow:var(--shadow);
      opacity:0;
      visibility:hidden;
      pointer-events:none;
      transform:translate(-50%,10px);
      transition:opacity .18s ease,visibility .18s ease,transform .18s ease;
    }

    .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:translate(-50%,0);
    }

    .dropdown-panel{
      width:320px;
      padding:18px;
    }

    .dropdown-title{
      padding:0 8px 10px;
      color:var(--theme);
      font-size:13px;
      font-weight:800;
    }

    .dropdown-panel > a:not(.dropdown-all){
      display:block;
      padding:10px 8px;
      border-top:1px solid #edf0f4;
      font-size:14px;
    }

    .dropdown-panel > a:not(.dropdown-all):hover{
      color:var(--theme);
    }

    .dropdown-all,
    .mega-footer{
      display:flex;
      align-items:center;
      justify-content:space-between;
      margin-top:10px;
      padding:11px 13px;
      color:#fff;
      background:var(--theme);
      border-radius:10px;
      font-size:13px;
      font-weight:800;
    }

    .mega-menu{
      width:min(920px,calc(100vw - 40px));
      padding:22px;
    }

    .nav-item:nth-last-child(-n+3) .mega-menu{
      left:auto;
      right:-130px;
      transform:translateY(10px);
    }

    .nav-item:nth-last-child(-n+3):hover > .mega-menu,
    .nav-item:nth-last-child(-n+3):focus-within > .mega-menu{
      transform:translateY(0);
    }

    .mega-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      padding-bottom:16px;
      border-bottom:1px solid var(--line);
    }

    .mega-top strong{
      display:block;
      color:var(--theme-dark);
      font-size:17px;
    }

    .mega-top span{
      color:var(--muted);
      font-size:13px;
    }

    .text-link{
      color:var(--theme);
      font-size:13px;
      font-weight:800;
    }

    .mega-categories{
      padding:14px 0;
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }

    .mega-categories a{
      padding:7px 11px;
      color:#40506a;
      background:#f1f4f8;
      border-radius:999px;
      font-size:12px;
      font-weight:700;
    }

    .mega-categories a:hover{
      color:#fff;
      background:var(--theme);
    }

    .mega-grid{
      padding-top:16px;
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:12px;
    }

    .mega-card{
      min-width:0;
      padding:12px;
      display:flex;
      align-items:flex-start;
      gap:11px;
      background:#f7f9fc;
      border:1px solid #e7ebf1;
      border-radius:13px;
      transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
    }

    .mega-card:hover{
      transform:translateY(-2px);
      border-color:#b9cae7;
      box-shadow:0 10px 24px rgba(11,61,145,.1);
    }

    .mega-card img{
      width:52px;
      height:52px;
      flex:0 0 52px;
      object-fit:cover;
      background:#fff;
      border-radius:10px;
    }

    .video-mega-card img{
      width:76px;
      height:54px;
      flex-basis:76px;
    }

    .mega-card-body{
      min-width:0;
      flex:1;
    }

    .mega-card-body strong{
      display:block;
      overflow:hidden;
      color:#253149;
      font-size:13px;
      text-overflow:ellipsis;
      white-space:nowrap;
    }

    .mega-card-body p{
      margin:4px 0 0;
      display:-webkit-box;
      overflow:hidden;
      color:var(--muted);
      font-size:12px;
      line-height:1.5;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:2;
    }

    .mega-meta{
      margin-top:5px;
      display:flex;
      flex-wrap:wrap;
      gap:3px 8px;
      color:var(--muted);
      font-size:10px;
    }

    .video-duration{
      margin-top:5px;
      display:inline-block;
      color:var(--theme);
      font-size:11px;
      font-weight:800;
    }

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

    .header-member{
      color:var(--theme);
      font-size:13px;
      font-weight:700;
    }

    .account-btn{
      padding:10px 15px;
      color:#fff;
      background:var(--theme);
      border-radius:10px;
      font-size:13px;
      font-weight:800;
      box-shadow:0 8px 18px rgba(11,61,145,.2);
    }

    .account-btn:hover{
      background:var(--theme-dark);
    }

    .hamburger{
      width:42px;
      height:42px;
      padding:10px;
      display:none;
      flex-direction:column;
      align-items:center;
      justify-content:center;
      gap:5px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:10px;
      cursor:pointer;
    }

    .hamburger span{
      width:20px;
      height:2px;
      display:block;
      background:var(--theme-dark);
      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:900;
      visibility:hidden;
      opacity:0;
      background:rgba(4,12,27,.58);
      backdrop-filter:blur(3px);
      transition:opacity .25s ease,visibility .25s ease;
    }

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

    .mobile-drawer{
      position:fixed;
      top:0;
      right:0;
      z-index:910;
      width:min(390px,92vw);
      height:100dvh;
      overflow-y:auto;
      color:var(--ink);
      background:#fff;
      box-shadow:-20px 0 50px rgba(4,12,27,.2);
      transform:translateX(105%);
      transition:transform .28s ease;
    }

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

    .drawer-head{
      min-height:72px;
      padding:14px 16px;
      display:flex;
      align-items:center;
      gap:12px;
      color:#fff;
      background:var(--theme);
    }

    .drawer-head > a{
      padding:8px 11px;
      background:rgba(255,255,255,.14);
      border:1px solid rgba(255,255,255,.22);
      border-radius:9px;
      font-size:13px;
      font-weight:700;
    }

    .drawer-close{
      width:40px;
      height:40px;
      margin-left:auto;
      color:#fff;
      background:transparent;
      border:0;
      font-size:30px;
      line-height:1;
      cursor:pointer;
    }

    .drawer-menu{
      padding:12px 16px 32px;
    }

    .drawer-link,
    .drawer-toggle{
      width:100%;
      min-height:48px;
      padding:12px 8px;
      display:flex;
      align-items:center;
      color:#27334a;
      background:transparent;
      border:0;
      border-bottom:1px solid var(--line);
      text-align:left;
      font-weight:750;
      cursor:pointer;
    }

    .drawer-toggle{
      justify-content:space-between;
    }

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

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

    .drawer-submenu{
      max-height:0;
      overflow:hidden;
      background:#f6f8fb;
      border-radius:0 0 10px 10px;
      transition:max-height .3s ease;
    }

    .drawer-submenu.open{
      max-height:720px;
    }

    .drawer-submenu a{
      padding:10px 14px;
      display:block;
      color:#536076;
      border-bottom:1px solid #e8ecf2;
      font-size:13px;
    }

    .drawer-submenu a:hover{
      color:var(--theme);
    }

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

    .video-detail-main .video-hero{
      padding:42px 0 24px;
      color:#fff;
      background:
        radial-gradient(circle at 20% 20%,rgba(58,117,218,.4),transparent 32%),
        linear-gradient(145deg,#06142d 0%,#0a285e 58%,#071a38 100%);
    }

    .video-detail-main .breadcrumbs{
      margin-bottom:18px;
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:8px;
      color:#c4d4ef;
      font-size:13px;
    }

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

    .video-detail-main .video-kicker{
      margin-bottom:10px;
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#dbe8ff;
      font-size:13px;
      font-weight:800;
      letter-spacing:.04em;
    }

    .video-detail-main .video-kicker::before{
      content:"";
      width:9px;
      height:9px;
      background:#5b9aff;
      border-radius:50%;
      box-shadow:0 0 0 6px rgba(91,154,255,.15);
    }

    .video-detail-main h1{
      max-width:980px;
      margin:0;
      font-size:clamp(30px,5vw,54px);
      line-height:1.18;
      letter-spacing:-.03em;
    }

    .video-detail-main .video-summary{
      max-width:850px;
      margin:18px 0 0;
      color:#d4def0;
      font-size:17px;
    }

    .video-detail-main .video-meta{
      margin-top:20px;
      display:flex;
      flex-wrap:wrap;
      gap:9px;
    }

    .video-detail-main .video-meta span{
      padding:7px 11px;
      color:#e6efff;
      background:rgba(255,255,255,.09);
      border:1px solid rgba(255,255,255,.14);
      border-radius:999px;
      font-size:12px;
    }

    .video-detail-main .video-layout{
      padding:28px 0 70px;
      display:grid;
      grid-template-columns:minmax(0,1fr) 330px;
      align-items:start;
      gap:26px;
    }

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

    .video-detail-main .player-shell{
      position:relative;
      min-height:420px;
      overflow:hidden;
      display:grid;
      place-items:center;
      color:#fff;
      background:#030711;
      border:1px solid #172641;
      border-radius:20px;
      box-shadow:0 22px 50px rgba(7,26,56,.22);
    }

    .video-detail-main .player-shell::before{
      content:"";
      position:absolute;
      inset:0;
      pointer-events:none;
      background:linear-gradient(180deg,transparent 65%,rgba(0,0,0,.38));
    }

    .video-detail-main .video-player{
      position:relative;
      z-index:1;
      width:100%;
      min-width:0;
    }

    .video-detail-main .video-player iframe,
    .video-detail-main .video-player video,
    .video-detail-main .video-player embed,
    .video-detail-main .video-player object{
      width:100%;
      max-width:100%;
      min-height:420px;
      display:block;
      border:0;
    }

    .video-detail-main .video-panel{
      margin-top:22px;
      padding:28px;
      min-width:0;
      overflow-x:auto;
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:0 12px 34px rgba(25,43,74,.07);
    }

    .video-detail-main .video-panel h2{
      margin:0 0 16px;
      color:var(--theme-dark);
      font-size:23px;
    }

    .video-detail-main .video-content{
      min-width:0;
      max-width:100%;
      overflow-x:auto;
      color:#354158;
      font-size:16px;
    }

    .video-detail-main .video-content > :first-child{
      margin-top:0;
    }

    .video-detail-main .video-content > :last-child{
      margin-bottom:0;
    }

    .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-tags{
      margin-top:22px;
      padding-top:18px;
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:9px;
      border-top:1px solid var(--line);
    }

    .video-detail-main .video-tags strong{
      color:var(--theme-dark);
    }

    .video-detail-main .video-tags span{
      color:var(--theme);
      font-size:14px;
    }

    .video-detail-main .notice{
      margin-top:22px;
      padding:18px 20px;
      color:#4b566b;
      background:#f7f9fc;
      border-left:4px solid var(--theme);
      border-radius:10px;
      font-size:14px;
    }

    .video-detail-main .video-sidebar{
      position:sticky;
      top:24px;
      display:grid;
      gap:20px;
    }

    .video-detail-main .side-card{
      padding:20px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:16px;
      box-shadow:0 10px 28px rgba(25,43,74,.06);
    }

    .video-detail-main .side-card h2{
      margin:0 0 14px;
      color:var(--theme-dark);
      font-size:18px;
    }

    .video-detail-main .video-facts{
      margin:0;
      display:grid;
      gap:0;
    }

    .video-detail-main .video-facts div{
      padding:11px 0;
      display:flex;
      justify-content:space-between;
      gap:16px;
      border-bottom:1px solid var(--line);
    }

    .video-detail-main .video-facts div:last-child{
      border-bottom:0;
    }

    .video-detail-main .video-facts dt{
      color:var(--muted);
      font-size:13px;
    }

    .video-detail-main .video-facts dd{
      margin:0;
      color:#253149;
      font-size:13px;
      font-weight:800;
      text-align:right;
    }

    .video-detail-main .category-links{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }

    .video-detail-main .category-links a{
      padding:8px 11px;
      color:var(--theme);
      background:var(--theme-soft);
      border-radius:999px;
      font-size:12px;
      font-weight:800;
    }

    .video-detail-main .category-links a:hover{
      color:#fff;
      background:var(--theme);
    }

    .video-detail-main .related-section{
      padding:64px 0 76px;
      background:#fff;
      border-top:1px solid var(--line);
    }

    .video-detail-main .section-heading{
      margin-bottom:24px;
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:20px;
    }

    .video-detail-main .section-heading span{
      display:block;
      margin-bottom:5px;
      color:var(--theme);
      font-size:13px;
      font-weight:800;
    }

    .video-detail-main .section-heading h2{
      margin:0;
      color:var(--theme-dark);
      font-size:30px;
    }

    .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;
      background:#fff;
      border:1px solid var(--line);
      border-radius:16px;
      transition:transform .2s ease,box-shadow .2s ease;
    }

    .video-detail-main .related-video:hover{
      transform:translateY(-4px);
      box-shadow:0 16px 34px rgba(11,61,145,.12);
    }

    .video-detail-main .related-cover{
      position:relative;
      aspect-ratio:16/9;
      overflow:hidden;
      background:#081a39;
    }

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

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

    .video-detail-main .related-cover span{
      position:absolute;
      right:10px;
      bottom:10px;
      padding:4px 8px;
      color:#fff;
      background:rgba(0,0,0,.72);
      border-radius:6px;
      font-size:11px;
      font-weight:800;
    }

    .video-detail-main .related-body{
      padding:17px;
    }

    .video-detail-main .related-body h3{
      margin:0;
      display:-webkit-box;
      overflow:hidden;
      color:#243047;
      font-size:16px;
      line-height:1.45;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:2;
    }

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

    .footer{
      color:#d7e1f2;
      background:#071a38;
    }

    .footer-main{
      padding:58px 0 42px;
      display:grid;
      grid-template-columns:1.4fr repeat(3,1fr);
      gap:42px;
    }

    .footer .logo{
      color:#fff;
    }

    .footer-brand p{
      max-width:430px;
      margin:18px 0;
      color:#aebbd0;
      font-size:14px;
    }

    .footer-social{
      color:#fff;
    }

    .footer-col h3{
      margin:0 0 17px;
      color:#fff;
      font-size:15px;
    }

    .footer-links{
      display:grid;
      gap:9px;
    }

    .footer-links a{
      color:#aebbd0;
      font-size:13px;
    }

    .footer-links a:hover,
    .footer-contact a:hover{
      color:#fff;
    }

    .footer-contact{
      display:grid;
      gap:6px;
      color:#aebbd0;
      font-size:13px;
    }

    .footer-contact span{
      margin-top:5px;
      color:#71809a;
      font-size:11px;
      font-weight:800;
      letter-spacing:.06em;
    }

    .footer-bottom{
      min-height:68px;
      padding:16px 0;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      color:#8190a9;
      border-top:1px solid rgba(255,255,255,.1);
      font-size:12px;
    }

    .footer-bottom-links{
      display:flex;
      gap:18px;
    }

    .footer-bottom-links a:hover{
      color:#fff;
    }

    @media (max-width:1120px){
      .main-nav{
        display:none;
      }

      .hamburger{
        display:flex;
      }

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

      .video-detail-main .video-layout{
        grid-template-columns:minmax(0,1fr) 290px;
      }

      .footer-main{
        grid-template-columns:1.3fr repeat(2,1fr);
      }

      .footer-col:last-child{
        grid-column:2/4;
      }
    }

    @media (max-width:820px){
      .topbar-welcome{
        display:none;
      }

      .topbar-inner{
        justify-content:center;
      }

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

      .video-detail-main .video-sidebar{
        position:static;
        grid-template-columns:repeat(2,minmax(0,1fr));
      }

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

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

      .footer-brand{
        grid-column:1/-1;
      }

      .footer-col:last-child{
        grid-column:auto;
      }
    }

    @media (max-width:620px){
      .container{
        width:min(calc(100% - 28px),var(--container));
      }

      .topbar-contact{
        width:100%;
        justify-content:space-between;
        gap:10px;
        font-size:11px;
      }

      .header-inner{
        min-height:68px;
      }

      .logo img{
        width:36px;
        height:36px;
      }

      .logo span{
        max-width:125px;
        font-size:14px;
      }

      .header-member,
      .account-btn{
        display:none;
      }

      .video-detail-main .video-hero{
        padding:30px 0 22px;
      }

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

      .video-detail-main .video-layout{
        padding-top:18px;
        padding-bottom:48px;
      }

      .video-detail-main .player-shell,
      .video-detail-main .video-player iframe,
      .video-detail-main .video-player video,
      .video-detail-main .video-player embed,
      .video-detail-main .video-player object{
        min-height:220px;
      }

      .video-detail-main .video-panel{
        padding:20px;
      }

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

      .video-detail-main .section-heading{
        align-items:flex-start;
        flex-direction:column;
      }

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

      .footer-main{
        padding-top:42px;
        grid-template-columns:1fr;
        gap:30px;
      }

      .footer-brand,
      .footer-col:last-child{
        grid-column:auto;
      }

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