:root{--theme:#0B3D91;--ink:#10233f;--muted:#64748b;--line:#dbe5f0;--soft:#f3f7fb;--white:#fff;--shadow:0 18px 50px rgba(18,52,92,.11)}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Noto Sans TC","Microsoft JhengHei",sans-serif;background:#f7fafc;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button{font:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{background:#082b67;color:#dbeafe;font-size:13px}
    .topbar .container{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:18px}
    .topbar-contact{display:flex;gap:22px}
    .topbar a:hover{color:#fff}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{min-height:78px;display:flex;align-items:center;gap:28px}
    .logo{display:inline-flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--theme);white-space:nowrap}
    .logo img{width:38px;height:38px;object-fit:contain}
    .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{display:flex;align-items:center;min-height:78px;padding:0 13px;font-weight:700;font-size:15px;white-space:nowrap}
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}
    .has-arrow:after{content:"⌄";font-size:14px;margin-left:6px;color:#8292a8}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translateX(-50%) translateY(8px);width:300px;background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:var(--shadow);padding:20px;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}
    .mega-menu{width:min(760px,90vw)}
    .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-heading,.mega-head strong{display:block;margin:0 0 5px;color:var(--theme);font-weight:800}
    .dropdown-panel>a:not(.dropdown-all){display:block;padding:8px 0;border-bottom:1px solid #edf2f7;font-size:14px}
    .dropdown-all,.mega-footer{display:block;margin-top:13px;color:var(--theme);font-weight:800;font-size:14px}
    .mega-head{padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:14px}
    .mega-head span{font-size:13px;color:var(--muted)}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .mega-card{display:block;padding:11px;border:1px solid #e5edf5;border-radius:12px;background:#fbfdff;transition:.2s}
    .mega-card:hover{border-color:#9ab8dc;transform:translateY(-2px)}
    .mega-card img{height:54px;width:100%;object-fit:contain;margin-bottom:7px}
    .mega-card strong{display:block;font-size:13px;line-height:1.4}
    .mega-card p{font-size:12px;color:var(--muted);margin:5px 0 0;line-height:1.5}
    .mega-meta{display:flex;flex-wrap:wrap;gap:4px 8px;margin-top:7px;color:var(--muted);font-size:11px}
    .mega-category-list{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
    .mega-category-list a{padding:5px 10px;border-radius:99px;background:#edf4fc;color:var(--theme);font-size:12px}
    .header-btns{display:flex;align-items:center;gap:10px}
    .member-slot{font-size:14px;color:var(--theme);font-weight:700}
    .open-account{background:var(--theme);color:#fff;padding:9px 14px;border-radius:9px;font-size:14px;font-weight:700}
    .hamburger{display:none;width:42px;height:40px;border:1px solid var(--line);border-radius:8px;background:#fff;padding:8px;cursor:pointer}
    .hamburger span{display:block;height:2px;background:var(--theme);margin:5px 0;transition:.2s}
    .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;background:rgba(3,18,40,.52);opacity:0;visibility:hidden;z-index:40;transition:.2s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;right:0;top:0;width:min(390px,88vw);height:100vh;background:#fff;z-index:41;transform:translateX(100%);transition:.25s;overflow:auto;box-shadow:-18px 0 45px rgba(0,0,0,.15)}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:12px;padding:18px;border-bottom:1px solid var(--line)}
    .drawer-member{font-weight:800;color:var(--theme);margin-right:auto}
    .drawer-head>a{background:var(--theme);color:#fff;border-radius:7px;padding:6px 10px;font-size:13px}
    .drawer-close{border:0;background:none;font-size:28px;color:var(--muted);cursor:pointer}
    .drawer-menu{padding:12px 18px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf2f7;background:none;text-align:left;color:var(--ink);font-weight:700;cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:var(--theme)}
    .drawer-toggle.active:after{content:"－"}
    .drawer-submenu{display:none;padding:5px 0 8px 14px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}
    .footer{margin-top:70px;background:#092b62;color:#d8e5f6;padding:48px 0 20px}
    .footer .logo{color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:35px}
    .footer-brand p{color:#adc2df;font-size:14px;max-width:390px}
    .footer h3{margin:0 0 14px;color:#fff;font-size:16px}
    .footer-links{display:grid;gap:8px;font-size:14px;color:#c5d5eb}
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-social{margin-top:18px}
    .footer-contact{display:grid;gap:8px;font-size:14px;color:#c5d5eb}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:38px;padding-top:18px;border-top:1px solid rgba(255,255,255,.16);font-size:13px;color:#a9bdd8}
    .footer-legal{display:flex;gap:18px}
    .video-page{padding:58px 0 0}
    .page-heading{text-align:center;max-width:760px;margin:0 auto 35px}
    .eyebrow{display:inline-block;color:var(--theme);font-weight:800;font-size:13px;letter-spacing:.12em;margin-bottom:8px}
    .page-heading h1{font-size:clamp(30px,5vw,48px);line-height:1.2;margin:0 0 12px;color:#0c2b57}
    .page-heading p{margin:0;color:var(--muted);font-size:16px}
    .video-toolbar{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:22px;padding:16px 20px;background:#fff;border:1px solid var(--line);border-radius:14px}
    .video-toolbar strong{color:var(--theme)}
    .video-categories{display:flex;flex-wrap:wrap;gap:8px}
    .video-categories a{padding:7px 13px;border-radius:99px;background:#edf4fc;color:var(--theme);font-size:13px}
    .video-categories a:hover{background:var(--theme);color:#fff}
    .video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
    .video-card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 8px 25px rgba(27,64,103,.06);transition:.2s}
    .video-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .video-cover{position:relative;aspect-ratio:16/9;background:#dceaf7;overflow:hidden}
    .video-cover img{width:100%;height:100%;object-fit:cover}
    .play-mark{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:48px;height:48px;border-radius:50%;background:rgba(11,61,145,.92);color:#fff;display:grid;place-items:center;font-size:21px;padding-left:3px}
    .video-duration{position:absolute;right:10px;bottom:9px;color:#fff;background:rgba(0,0,0,.68);padding:2px 7px;border-radius:5px;font-size:12px}
    .video-body{padding:18px}
    .video-body h2{font-size:18px;line-height:1.45;margin:0 0 8px;color:#123764}
    .video-body p{font-size:14px;color:var(--muted);margin:0 0 13px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
    .video-meta{display:flex;justify-content:space-between;gap:10px;color:#8190a3;font-size:12px}
    .video-cta{display:inline-block;margin-top:13px;color:var(--theme);font-weight:800;font-size:14px}
    .pagination{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-top:38px}
    .pagination a{min-width:38px;text-align:center;padding:7px 11px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--theme)}
    .pagination a:hover,.pagination a.current,.pagination a.active{background:var(--theme);color:#fff;border-color:var(--theme)}
    @media(max-width:1050px){
      .main-nav{display:none}.hamburger{display:block}.header-btns{margin-left:auto}.mega-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:760px){
      .container{width:min(100% - 28px,600px)}
      .topbar .container{align-items:flex-start;padding:8px 0;flex-direction:column;gap:2px}
      .topbar-contact{gap:12px;flex-wrap:wrap}
      .header-inner{min-height:68px}.open-account{display:none}
      .video-page{padding-top:38px}.video-toolbar{align-items:flex-start;flex-direction:column}
      .video-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}
      .footer-bottom{flex-direction:column}.footer-legal{flex-wrap:wrap}
    }
    @media(max-width:480px){
      .footer-grid{grid-template-columns:1fr}.mega-grid{grid-template-columns:1fr}
      .page-heading h1{font-size:32px}
    }