:root{
      --theme:#0B3D91;
      --ink:#14213d;
      --muted:#667085;
      --line:#e5eaf2;
      --soft:#f4f7fb;
      --white:#fff;
      --shadow:0 18px 50px rgba(14,35,70,.10);
      --radius:18px;
    }
    *{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",Arial,sans-serif;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:#091a38;color:#dce7fa;font-size:13px}
    .topbar-inner{min-height:38px;display:flex;justify-content:space-between;align-items:center;gap:18px}
    .topbar p{margin:0}
    .topbar-contact{display:flex;gap:20px;flex-wrap:wrap}
    .topbar a:hover{color:#fff}
    .header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(16px)}
    .header-inner{height:78px;display:flex;align-items:center;gap:28px}
    .logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;white-space:nowrap}
    .logo img{width:38px;height:38px;object-fit:contain;border-radius:10px}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:center;justify-content:center;gap:3px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:inline-flex;align-items:center;gap:6px;padding:27px 12px;font-size:14px;font-weight:700;white-space:nowrap}
    .nav-link:hover{color:var(--theme)}
    .has-arrow:after{content:"";width:6px;height:6px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg);margin-top:-4px}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);visibility:hidden;opacity:0;pointer-events:none;transition:.2s ease;z-index:40;padding-top:10px}
    .dropdown-panel{width:460px}
    .mega-menu{width:min(940px,calc(100vw - 30px))}
    .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-shell,.mega-shell{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);overflow:hidden}
    .dropdown-head,.mega-heading-row{display:flex;justify-content:space-between;align-items:center;gap:15px;padding:18px 22px;border-bottom:1px solid var(--line)}
    .dropdown-head a,.mega-heading-row a{font-size:13px;color:var(--theme);font-weight:700}
    .dropdown-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;padding:18px}
    .dropdown-story{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:700}
    .dropdown-story img{width:56px;height:44px;object-fit:cover;border-radius:8px}
    .mega-body{display:grid;grid-template-columns:170px 1fr;gap:18px;padding:18px}
    .mega-categories{display:flex;flex-direction:column;gap:9px;border-right:1px solid var(--line);padding-right:16px}
    .mega-categories-title{font-size:12px;color:var(--muted);font-weight:800;margin-bottom:4px}
    .mega-categories a{font-size:13px}
    .mega-categories a:hover{color:var(--theme)}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .mega-card{display:block;border:1px solid var(--line);border-radius:12px;padding:11px;transition:.2s}
    .mega-card:hover{border-color:var(--theme);transform:translateY(-2px)}
    .mega-card img{width:100%;height:58px;object-fit:contain;border-radius:8px;margin-bottom:8px}
    .mega-card .mega-logo{height:38px}
    .mega-card .mega-icon{height:40px;width:40px;object-fit:contain}
    .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;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .mega-meta{display:flex;gap:7px;flex-wrap:wrap;margin-top:8px;font-size:11px;color:var(--muted)}
    .mega-footer{display:block;padding:13px 20px;background:#f7f9fc;color:var(--theme);font-size:13px;font-weight:800;text-align:right}
    .header-btns{display:flex;align-items:center;gap:10px}
    .header-member{font-size:13px}
    .account-btn{background:var(--theme);color:#fff;padding:9px 15px;border-radius:9px;font-size:13px;font-weight:800}
    .hamburger{display:none;border:0;background:transparent;padding:8px;cursor:pointer}
    .hamburger span{display:block;width:23px;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{position:fixed;inset:0;background:rgba(8,22,45,.5);opacity:0;visibility:hidden;z-index:50;transition:.2s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:0;width:min(380px,88vw);height:100vh;background:#fff;z-index:51;transform:translateX(100%);transition:.25s ease;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:13px;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{border:0;background:transparent;font-size:29px;line-height:1;cursor:pointer;color:var(--muted)}
    .drawer-menu{padding:12px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid var(--line);background:transparent;text-align:left;font-weight:700;color:var(--ink);cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:var(--theme)}
    .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:14px}
    .footer{background:#091a38;color:#c8d4e8;margin-top:70px}
    .footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px;padding:55px 0 42px}
    .footer .logo{color:#fff;margin-bottom:15px}
    .footer-brand p{max-width:330px;color:#9fb0ca;font-size:13px;margin:0}
    .footer h3{font-size:14px;color:#fff;margin:3px 0 15px}
    .footer-links{display:flex;flex-direction:column;gap:8px;font-size:13px}
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-contact{display:flex;flex-direction:column;gap:8px;font-size:13px}
    .footer-social{color:#9fb0ca}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:15px;padding:18px 0;font-size:12px;color:#9fb0ca}
    .footer-bottom p{margin:0}
    .download-page-main{background:linear-gradient(180deg,#f6f9fd 0,#fff 55%);padding-bottom:5px}
    .download-hero{padding:82px 0 65px;text-align:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:28px;height:2px;background:var(--theme)}
    .download-hero h1{font-size:clamp(34px,5vw,62px);line-height:1.15;letter-spacing:-.04em;margin:20px auto 16px;max-width:780px}
    .download-hero p{color:var(--muted);max-width:650px;margin:0 auto;font-size:17px}
    .download-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:30px}
    .primary-btn,.secondary-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:10px;font-size:14px;font-weight:800}
    .primary-btn{background:var(--theme);color:#fff;box-shadow:0 10px 22px rgba(11,61,145,.2)}
    .secondary-btn{background:#fff;border:1px solid #ccd7e8;color:var(--ink)}
    .download-note{margin-top:18px;color:var(--muted);font-size:12px}
    .download-panel{width:min(1040px,100%);margin:0 auto;padding:28px;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow)}
    .platform-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .platform-card{border:1px solid var(--line);border-radius:15px;padding:22px;text-align:center;background:#fff}
    .platform-icon{width:48px;height:48px;display:grid;place-items:center;margin:0 auto 12px;border-radius:14px;background:#e9f0fb;color:var(--theme);font-size:23px;font-weight:900}
    .platform-card h2{font-size:17px;margin:0 0 6px}
    .platform-card p{font-size:13px;color:var(--muted);margin:0 0 16px}
    .platform-card a{display:inline-flex;color:var(--theme);font-size:13px;font-weight:800}
    .section{padding:74px 0}
    .section-heading{text-align:center;max-width:650px;margin:0 auto 35px}
    .section-heading h2{font-size:clamp(26px,4vw,40px);line-height:1.25;margin:9px 0 12px}
    .section-heading p{margin:0;color:var(--muted)}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .step-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;padding:25px 21px;box-shadow:0 10px 30px rgba(20,40,75,.05)}
    .step-number{width:34px;height:34px;border-radius:50%;background:var(--theme);color:#fff;display:grid;place-items:center;font-weight:800;font-size:14px;margin-bottom:18px}
    .step-card h3{font-size:17px;margin:0 0 8px}
    .step-card p{font-size:13px;color:var(--muted);margin:0}
    .trust-strip{background:#0e2345;color:#fff;padding:35px 0}
    .trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px;text-align:center}
    .trust-grid strong{display:block;font-size:23px;color:#fff}
    .trust-grid span{font-size:13px;color:#aebed7}
    .faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}
    .faq-item{border:1px solid var(--line);border-radius:14px;padding:20px 22px;background:#fff}
    .faq-item h3{font-size:16px;margin:0 0 8px}
    .faq-item p{color:var(--muted);font-size:13px;margin:0}
    .final-cta{margin-top:25px;background:linear-gradient(135deg,#0B3D91,#123265);color:#fff;border-radius:22px;text-align:center;padding:46px 24px}
    .final-cta h2{font-size:30px;margin:0 0 10px}
    .final-cta p{color:#d4e2fa;margin:0 auto 22px}
    .final-cta .primary-btn{background:#fff;color:var(--theme)}
    @media (max-width:1050px){
      .main-nav{display:none}
      .hamburger{display:block}
      .footer-main{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:700px){
      .container{width:min(100% - 28px,1180px)}
      .topbar-inner{padding:8px 0;align-items:flex-start;flex-direction:column;gap:2px}
      .topbar-contact{gap:10px}
      .header-inner{height:68px;gap:10px}
      .header-member{display:none}
      .account-btn{padding:8px 10px;font-size:12px}
      .download-hero{padding:58px 0 42px}
      .download-hero h1{font-size:38px}
      .download-hero p{font-size:15px}
      .download-panel{padding:15px}
      .platform-row,.steps,.trust-grid,.faq-grid{grid-template-columns:1fr}
      .section{padding:52px 0}
      .footer-main{grid-template-columns:1fr;gap:28px;padding:40px 0 30px}
      .footer-bottom{align-items:flex-start;flex-direction:column}
    }