:root{
      --theme:#0B3D91;
      --ink:#172033;
      --muted:#68758a;
      --line:#e4e9f1;
      --soft:#f4f7fb;
      --white:#fff;
      --shadow:0 16px 40px rgba(19,43,82,.09);
      --radius:16px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#fff;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC","Microsoft JhengHei",sans-serif;line-height:1.65}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button{font:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .skip-link{position:absolute;left:-9999px;top:8px;z-index:100}
    .skip-link:focus{left:16px;background:#fff;padding:8px 14px;border-radius:8px}
    .topbar{background:#f1f4f8;color:#697589;font-size:13px;border-bottom:1px solid #e4e9f0}
    .topbar-inner{min-height:34px;display:flex;justify-content:space-between;align-items:center;gap:20px}
    .topbar-contact{display:flex;gap:18px}
    .topbar-contact a:hover{color:var(--theme)}
    .header{background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:20}
    .header-inner{height:76px;display:flex;align-items:center;gap:28px}
    .logo{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;font-weight:800;color:#112344}
    .logo img{width:34px;height:34px;object-fit:contain}
    .logo span{font-size:18px}
    .main-nav{margin-left:auto}
    .nav-list{display:flex;align-items:center;gap:4px;padding:0;margin:0;list-style:none}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:5px;padding:26px 13px;font-size:14px;color:#36445c;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--theme)}
    .has-arrow:after{content:"⌄";font-size:13px;color:#8b96a8}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translate(-50%,8px);opacity:0;visibility:hidden;pointer-events:none;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);transition:.2s ease}
    .dropdown-panel{width:290px;padding:17px}
    .dropdown-panel a{display:block;padding:9px 4px;font-size:13px;border-bottom:1px solid #f0f2f6}
    .dropdown-panel a:hover{color:var(--theme)}
    .dropdown-title{font-weight:800;color:#253653;margin-bottom:8px}
    .dropdown-all,.mega-footer{display:flex!important;justify-content:space-between;align-items:center;border:0!important;color:var(--theme);font-weight:700;margin-top:7px}
    .mega-menu{width:min(780px,calc(100vw - 30px));padding:20px}
    .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)}
    .mega-menu:before{content:"";position:absolute;left:0;right:0;top:-14px;height:14px}
    .mega-top{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;margin-bottom:15px}
    .mega-top strong{display:block;font-size:15px}
    .mega-top span{font-size:12px;color:var(--muted)}
    .text-link{color:var(--theme);font-size:13px;font-weight:700;white-space:nowrap}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
    .mega-card{display:flex;gap:9px;padding:10px;border:1px solid #edf0f5;border-radius:11px;background:#fbfcfe;min-width:0}
    .mega-card:hover{border-color:#aebfdd;background:#f5f8fd}
    .mega-card img{width:42px;height:42px;object-fit:cover;border-radius:8px;background:#e9eef6;flex:none}
    .mega-card-body{min-width:0}
    .mega-card strong{font-size:12px;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .mega-card p{font-size:11px;color:var(--muted);margin:3px 0 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .mega-meta{display:flex;flex-wrap:wrap;gap:3px 8px;color:#7a8799;font-size:10px;margin-top:4px}
    .mega-categories{display:flex;flex-wrap:wrap;gap:7px;margin:0 0 14px}
    .mega-categories a{padding:5px 10px;border-radius:999px;background:#f1f5fb;color:var(--theme);font-size:12px}
    .video-mega-card{position:relative}
    .video-duration{font-size:10px;color:var(--theme)}
    .mega-footer{padding-top:14px;border-top:1px solid var(--line)!important}
    .header-btns{display:flex;align-items:center;gap:10px}
    .header-member{font-size:13px;color:var(--theme);font-weight:700}
    .account-btn{background:var(--theme);color:#fff;padding:9px 15px;border-radius:8px;font-size:13px;font-weight:700}
    .hamburger{display:none;border:0;background:none;padding:7px;cursor:pointer}
    .hamburger span{display:block;width:24px;height:2px;background:var(--ink);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{display:none;position:fixed;inset:0;background:rgba(10,23,45,.45);z-index:40}
    .drawer-overlay.open{display:block}
    .mobile-drawer{position:fixed;top:0;right:0;width:min(390px,88vw);height:100vh;background:#fff;z-index:50;transform:translateX(100%);transition:.25s ease;overflow:auto;box-shadow:-15px 0 35px rgba(0,0,0,.12)}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{height:76px;display:flex;align-items:center;gap:15px;padding:0 20px;border-bottom:1px solid var(--line);font-weight:700}
    .drawer-head>a{margin-left:auto;color:var(--theme);font-size:13px}
    .drawer-close{border:0;background:none;font-size:28px;color:#657187;cursor:pointer}
    .drawer-menu{padding:12px 20px 35px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf0f4;background:none;text-align:left;color:#253653;font-size:15px}
    .drawer-toggle{cursor:pointer;display:flex;justify-content:space-between}
    .drawer-toggle:after{content:"＋";color:#8793a6}
    .drawer-toggle.active:after{content:"－"}
    .drawer-submenu{display:none;padding:5px 0 8px 15px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:#69768a;font-size:13px}
    .footer{margin-top:70px;background:#111d31;color:#c6d0df}
    .footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:42px;padding:55px 0 42px}
    .footer .logo{color:#fff;margin-bottom:15px}
    .footer-brand p{max-width:350px;color:#9eacc0;font-size:13px;margin:0 0 18px}
    .footer-social{color:#cdd9e8;font-size:13px}
    .footer h3{font-size:14px;color:#fff;margin:4px 0 15px}
    .footer-links{display:grid;gap:8px}
    .footer-links a,.footer-contact a{font-size:13px;color:#aab8cb}
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-contact{display:grid;gap:5px;font-size:12px}
    .footer-contact span{color:#788aa4;margin-top:5px}
    .footer-bottom{border-top:1px solid #2c3a50;min-height:65px;display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:12px;color:#8999ae}
    .footer-bottom-links{display:flex;gap:16px}
    .footer-bottom-links a:hover{color:#fff}

    .video-page{background:#f5f7fb;padding:58px 0 20px;min-height:620px}
    .video-page .page-heading{text-align:center;max-width:740px;margin:0 auto 32px}
    .video-page .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--theme);font-size:12px;font-weight:800;letter-spacing:.12em}
    .video-page .eyebrow:before{content:"";width:24px;height:2px;background:var(--theme)}
    .video-page h1{font-size:clamp(30px,4vw,48px);line-height:1.2;margin:10px 0 12px;color:#142644}
    .video-page .intro{margin:0;color:var(--muted);font-size:15px}
    .video-page .category-bar{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin:0 auto 30px}
    .video-page .category-bar a{padding:8px 16px;border:1px solid #dbe3ef;background:#fff;border-radius:999px;color:#53647c;font-size:13px}
    .video-page .category-bar a:hover,.video-page .category-bar a.current{background:var(--theme);border-color:var(--theme);color:#fff}
    .video-page .video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
    .video-page .video-card{background:#fff;border:1px solid #e8edf4;border-radius:var(--radius);overflow:hidden;box-shadow:0 8px 24px rgba(31,58,99,.05);transition:.2s}
    .video-page .video-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .video-page .video-cover{aspect-ratio:16/9;position:relative;background:#dce5f2;overflow:hidden}
    .video-page .video-cover img{width:100%;height:100%;object-fit:cover}
    .video-page .play-mark{position:absolute;left:18px;bottom:16px;width:40px;height:40px;display:grid;place-items:center;border-radius:50%;background:rgba(11,61,145,.92);color:#fff;font-size:16px;padding-left:2px}
    .video-page .duration{position:absolute;right:12px;bottom:12px;padding:3px 7px;border-radius:5px;background:rgba(15,27,47,.78);color:#fff;font-size:11px}
    .video-page .video-body{padding:18px 19px 20px}
    .video-page .video-body h2{font-size:17px;line-height:1.45;margin:0 0 8px;color:#1d3151}
    .video-page .video-summary{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden;color:#718097;font-size:13px;min-height:63px;margin:0 0 13px}
    .video-page .video-meta{display:flex;justify-content:space-between;gap:10px;color:#96a1b1;font-size:11px;border-top:1px solid #edf0f5;padding-top:12px}
    .video-page .watch-link{color:var(--theme);font-weight:700}
    .video-page .pagination{display:flex;justify-content:center;flex-wrap:wrap;gap:7px;margin:38px 0 10px}
    .video-page .pagination a{min-width:36px;height:36px;padding:7px 11px;display:grid;place-items:center;border:1px solid #dce4ef;border-radius:8px;background:#fff;color:#60708a;font-size:13px}
    .video-page .pagination a:hover,.video-page .pagination a.current,.video-page .pagination a.active{background:var(--theme);border-color:var(--theme);color:#fff}
    @media(max-width:1080px){
      .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,620px)}
      .topbar-inner{padding:7px 0;align-items:flex-start}
      .topbar-welcome{max-width:55%;line-height:1.35}
      .topbar-contact{display:grid;gap:0;text-align:right}
      .header-inner{height:68px}
      .header-member{display:none}
      .account-btn{font-size:12px;padding:8px 11px}
      .video-page{padding-top:40px}
      .video-page .video-grid{grid-template-columns:1fr;gap:16px}
      .video-page h1{font-size:32px}
      .video-page .category-bar{justify-content:flex-start}
      .footer-main{grid-template-columns:1fr 1fr;gap:28px;padding:38px 0}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{padding:18px 0;display:grid;gap:10px}
    }
    @media(max-width:430px){
      .mega-grid{grid-template-columns:1fr}
      .footer-main{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
      .topbar{font-size:11px}
    }