:root{
      --theme:#0B3D91;
      --theme-dark:#082d6b;
      --ink:#172033;
      --muted:#687386;
      --line:#dce3ed;
      --surface:#f5f7fa;
      --white:#fff;
      --shadow:0 16px 40px rgba(16,35,67,.09);
      --radius:12px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#fff;font-family:-apple-system,BlinkMacSystemFont,"Noto Sans TC","Microsoft JhengHei",sans-serif;line-height:1.6}
    a{color:inherit;text-decoration:none}
    button{font:inherit}
    img{max-width:100%;display:block}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .skip-link{position:absolute;left:-9999px;top:8px;z-index:1000;padding:8px 14px;background:var(--theme);color:#fff}
    .skip-link:focus{left:12px}
    .topbar{background:#10213e;color:#dce7f8;font-size:13px}
    .topbar-inner{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-contact{display:flex;gap:18px}
    .topbar a:hover{color:#fff}
    .header{position:relative;z-index:30;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{min-height:76px;display:flex;align-items:center;gap:28px}
    .logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;font-weight:800;letter-spacing:.01em}
    .logo img{width:34px;height:34px;object-fit:contain}
    .main-nav{margin-left:auto}
    .nav-list{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:7px;padding:27px 12px;font-size:14px;font-weight:650;white-space:nowrap}
    .has-arrow:after{content:"";width:6px;height:6px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg) translateY(-2px)}
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);visibility:hidden;opacity:0;pointer-events:none;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);transition:.18s ease;z-index:50}
    .nav-item:hover>.dropdown-panel,.nav-item:focus-within>.dropdown-panel,.nav-item:hover>.mega-menu,.nav-item:focus-within>.mega-menu{visibility:visible;opacity:1;pointer-events:auto}
    .dropdown-panel{width:290px;padding:18px}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-14px;height:14px}
    .dropdown-title{font-size:13px;font-weight:800;color:var(--theme);margin-bottom:9px}
    .dropdown-panel>a:not(.dropdown-all){display:block;padding:9px 0;border-bottom:1px solid #edf0f5;font-size:13px}
    .dropdown-panel>a:hover{color:var(--theme)}
    .dropdown-all,.mega-footer{display:flex;justify-content:space-between;align-items:center;color:var(--theme);font-size:13px;font-weight:700;padding-top:13px}
    .mega-menu{width:min(760px,calc(100vw - 30px));padding:22px}
    .mega-top{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:17px}
    .mega-top strong{display:block;font-size:15px}
    .mega-top span{display:block;color:var(--muted);font-size:12px;margin-top:3px}
    .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;min-width:0;padding:10px;border:1px solid #e8edf4;border-radius:8px;background:#fbfcfe}
    .mega-card:hover{border-color:#9bb5dd;background:#f3f7fd}
    .mega-card img{width:34px;height:34px;object-fit:contain;flex:0 0 auto}
    .mega-card-body{min-width:0}
    .mega-card strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px}
    .mega-card p{margin:3px 0 0;color:var(--muted);font-size:11px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .mega-meta{display:flex;flex-wrap:wrap;gap:3px 8px;color:var(--muted);font-size:10px;margin-top:4px}
    .mega-categories{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:15px}
    .mega-categories a{padding:4px 9px;border-radius:20px;background:#eef4fc;color:var(--theme);font-size:11px}
    .video-duration{display:inline-block;margin-top:3px;color:var(--theme);font-size:10px}
    .header-btns{display:flex;align-items:center;gap:10px}
    .header-member{font-size:13px;color:var(--theme);white-space:nowrap}
    .account-btn{padding:9px 15px;border-radius:7px;background:var(--theme);color:#fff;font-size:13px;font-weight:700;white-space:nowrap}
    .account-btn:hover{background:var(--theme-dark)}
    .hamburger{display:none;width:42px;height:40px;border:1px solid var(--line);border-radius:7px;background:#fff;cursor:pointer;padding:9px}
    .hamburger span{display:block;width:22px;height:2px;margin:4px auto;background:var(--ink);transition:.2s}
    .hamburger.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
    .hamburger.active span:nth-child(2){opacity:0}
    .hamburger.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
    .drawer-overlay{display:none;position:fixed;inset:0;background:rgba(8,20,39,.48);z-index:80}
    .drawer-overlay.open{display:block}
    .mobile-drawer{position:fixed;top:0;right:0;bottom:0;width:min(390px,88vw);background:#fff;z-index:90;transform:translateX(100%);transition:transform .25s ease;overflow:auto;box-shadow:-15px 0 40px rgba(0,0,0,.14)}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:12px;padding:20px;border-bottom:1px solid var(--line);font-weight:800}
    .drawer-head>a{margin-left:auto;color:var(--theme);font-size:13px}
    .drawer-close{width:34px;height:34px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--ink);font-size:22px;line-height:1;cursor:pointer}
    .drawer-menu{padding:10px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid #edf0f5;background:transparent;text-align:left;color:var(--ink);font-weight:650;cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--theme);font-size:18px;font-weight:400}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:4px 0 8px 15px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:13px}
    .drawer-submenu a:hover{color:var(--theme)}
    .footer{margin-top:70px;background:#101d32;color:#d7e0ee}
    .footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:44px;padding:52px 0 42px}
    .footer .logo{color:#fff}
    .footer .logo img{background:#fff;border-radius:6px}
    .footer-brand p{max-width:340px;color:#9eacc0;font-size:13px;margin:18px 0}
    .footer-social{color:#fff}
    .footer-col h3{margin:0 0 15px;color:#fff;font-size:14px}
    .footer-links{display:grid;gap:9px}
    .footer-links a,.footer-contact a{color:#aab7c9;font-size:13px}
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-contact{display:grid;gap:5px;font-size:13px}
    .footer-contact span{color:#73839a;font-size:12px;margin-top:5px}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:20px;padding:18px 0;color:#8492a6;font-size:12px}
    .footer-bottom-links{display:flex;gap:18px}
    .footer-bottom-links a:hover{color:#fff}

    .tools-page{background:#f5f7fa;padding:58px 0 10px}
    .tools-intro{text-align:center;max-width:720px;margin:0 auto 38px}
    .tools-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--theme);font-size:12px;font-weight:800;letter-spacing:.12em}
    .tools-kicker:before{content:"";width:22px;height:2px;background:var(--theme)}
    .tools-intro h1{margin:12px 0 10px;font-size:clamp(30px,4vw,48px);line-height:1.2;letter-spacing:0}
    .tools-intro p{margin:0;color:var(--muted);font-size:15px}
    .tools-toolbar{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:22px;padding:15px 18px;background:#fff;border:1px solid var(--line);border-radius:10px}
    .tools-count{font-size:14px;font-weight:750}
    .tools-filter{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:13px}
    .tools-filter select{min-width:150px;padding:9px 30px 9px 11px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--ink)}
    .tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}
    .tool-card{display:flex;flex-direction:column;min-height:245px;padding:23px;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 4px 14px rgba(21,46,83,.035);transition:transform .18s,box-shadow .18s,border-color .18s}
    .tool-card:hover{transform:translateY(-3px);border-color:#a7bfdf;box-shadow:var(--shadow)}
    .tool-card-head{display:flex;align-items:center;gap:14px}
    .tool-icon{display:grid;place-items:center;width:52px;height:52px;flex:0 0 auto;border-radius:10px;background:#edf4fd;border:1px solid #dbe8f9}
    .tool-icon img{width:32px;height:32px;object-fit:contain}
    .tool-card h2{margin:0;font-size:17px;line-height:1.35}
    .tool-card p{margin:17px 0;color:var(--muted);font-size:13px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
    .tool-card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid #edf0f5}
    .tool-meta{color:#8a96a8;font-size:11px}
    .tool-link{color:var(--theme);font-size:13px;font-weight:750}
    .tool-link:after{content:" →";transition:margin .15s}
    .tool-card:hover .tool-link:after{margin-left:4px}
    .tools-note{margin:30px auto 0;padding:18px 22px;max-width:820px;border-left:3px solid var(--theme);background:#eaf1fb;color:#52627a;font-size:13px}
    @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,1180px)}
      .topbar-inner{padding:8px 0;align-items:flex-start;flex-direction:column;gap:3px}
      .topbar-contact{gap:12px}
      .header-inner{min-height:66px}
      .header-member{display:none}
      .account-btn{padding:8px 11px}
      .tools-page{padding-top:40px}
      .tools-intro{margin-bottom:28px}
      .tools-toolbar{align-items:flex-start;flex-direction:column}
      .tools-filter{width:100%;justify-content:space-between}
      .tools-filter select{flex:1}
      .tools-grid{grid-template-columns:1fr}
      .tool-card{min-height:220px}
      .footer-main{grid-template-columns:1fr 1fr;gap:30px}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{flex-direction:column}
    }
    @media(max-width:460px){
      .mega-grid{grid-template-columns:1fr}
      .footer-main{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
      .header-btns{gap:6px}
      .account-btn{font-size:12px}
    }