:root{--theme:#0B3D91;--deep:#071a45;--ink:#17233f;--muted:#64748b;--line:#dbe5f2;--soft:#f3f7fc;--white:#fff;--shadow:0 18px 50px rgba(7,26,69,.12)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#f7faff;font-family:-apple-system,BlinkMacSystemFont,"Noto Sans TC","PingFang TC","Microsoft JhengHei",sans-serif;line-height:1.7}a{color:inherit;text-decoration:none}button{font:inherit}.container{width:min(1180px,calc(100% - 40px));margin:auto}.topbar{background:var(--deep);color:#dbeafe;font-size:13px}.topbar-inner{min-height:36px;display:flex;align-items:center;justify-content:space-between}.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{height:78px;display:flex;align-items:center;gap:30px}.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--deep);white-space:nowrap}.logo img{width:34px;height:34px;object-fit:contain}.main-nav{margin-left:auto}.nav-list{display:flex;align-items:center;gap:3px;margin:0;padding:0;list-style:none}.nav-item{position:relative}.nav-link{display:block;padding:26px 14px;font-weight:650;font-size:15px;white-space:nowrap}.nav-link:hover,.nav-link:focus{color:var(--theme)}.has-arrow:after{content:"⌄";font-size:12px;margin-left:6px}.dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translate(-50%,10px);opacity:0;visibility:hidden;pointer-events:none;background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:var(--shadow);transition:.2s 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a:hover{background:#edf5ff;color:var(--theme)}.video-mega-card,.product-mega-card{display:flex;gap:9px}.video-mega-card>img,.product-mega-card>img{width:52px;height:42px;border-radius:7px;object-fit:cover}.video-mega-copy,.product-mega-copy{min-width:0}.video-mega-copy p,.product-mega-copy p{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.video-duration,.product-meta{font-size:11px;color:var(--theme)}.header-btns{display:flex;align-items:center;gap:10px}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:8px;padding:11px 20px;font-weight:750;border:1px solid transparent;cursor:pointer}.btn-primary{background:var(--theme);color:#fff;box-shadow:0 8px 18px rgba(11,61,145,.2)}.btn-primary:hover{background:#092f70}.btn-outline{border-color:#9cb5d8;color:var(--theme);background:#fff}.btn-small{padding:8px 14px;font-size:13px}.hamburger{display:none;border:0;background:transparent;width:42px;height:42px;padding:9px;cursor:pointer}.hamburger span{display:block;height:2px;background:var(--deep);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(3,15,40,.48);opacity:0;visibility:hidden;z-index:40;transition:.2s}.drawer-overlay.open{opacity:1;visibility:visible}.mobile-drawer{position:fixed;top:0;right:0;width:min(390px,88vw);height:100vh;background:#fff;z-index:41;transform:translateX(105%);transition:.25s;overflow:auto;box-shadow:-12px 0 40px rgba(0,0,0,.18)}.mobile-drawer.open{transform:translateX(0)}.drawer-head{display:flex;align-items:center;gap:14px;padding:20px;border-bottom:1px solid var(--line);font-weight:700}.drawer-head>:first-child{margin-right:auto}.drawer-head a{color:var(--theme)}.drawer-close{border:0;background:#edf3fb;color:var(--deep);border-radius:50%;width:32px;height:32px;cursor:pointer}.drawer-menu{padding:10px 20px 30px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;color:var(--ink);font-weight:650;cursor:pointer}.drawer-toggle:after{content:"＋";float:right;color:var(--theme)}.drawer-toggle.active:after{content:"－"}.drawer-submenu{display:none;padding:4px 0 7px 14px}.drawer-submenu.open{display:block}.drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}.footer{background:var(--deep);color:#c9d7ed;margin-top:70px}.footer-main{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:38px;padding:55px 0 42px}.footer .logo{color:#fff}.footer-brand p{max-width:310px;font-size:13px;color:#9fb3d1}.footer-title{font-size:15px;color:#fff;margin:0 0 15px}.footer-links,.footer-contact{display:flex;flex-direction:column;gap:8px;font-size:13px}.footer-links a:hover,.footer-contact a:hover{color:#fff}.social-link{color:#8fc2ff}.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding:18px 0;border-top:1px solid rgba(255,255,255,.14);font-size:12px;color:#91a7c7}.download-page-main{padding:70px 0 20px}.download-hero{text-align:center;max-width:760px;margin:0 auto 45px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.12em}.eyebrow:before{content:"";width:24px;height:2px;background:#4d8ee8}.download-hero h1{margin:14px 0 13px;color:var(--deep);font-size:clamp(34px,5vw,58px);line-height:1.15;letter-spacing:-.04em}.download-hero p{margin:0 auto;color:var(--muted);font-size:17px;max-width:640px}.download-actions{display:flex;justify-content:center;gap:12px;margin-top:25px}.download-panel{background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:28px}.download-panel-head{display:flex;justify-content:space-between;align-items:end;gap:15px;margin-bottom:22px}.download-panel h2{margin:0;color:var(--deep);font-size:24px}.download-panel-head p{margin:0;color:var(--muted);font-size:13px}.download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.download-card{border:1px solid var(--line);border-radius:16px;padding:20px;background:linear-gradient(150deg,#fff,#f5f9ff);display:flex;flex-direction:column;min-height:205px}.download-card .card-icon{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;background:#e7f0ff;color:var(--theme);font-size:22px;font-weight:800}.download-card h3{margin:15px 0 5px;color:var(--deep);font-size:17px}.download-card p{margin:0 0 16px;color:var(--muted);font-size:13px;line-height:1.6}.download-card .btn{margin-top:auto;align-self:flex-start}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px}.step{position:relative;padding:23px 20px;background:#edf5ff;border-radius:16px}.step-number{color:#fff;background:var(--theme);width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-weight:800}.step h3{margin:13px 0 4px;color:var(--deep);font-size:17px}.step p{margin:0;color:var(--muted);font-size:13px}.faq{margin-top:44px}.faq h2{text-align:center;color:var(--deep);margin-bottom:20px}.faq-list{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:17px 19px}.faq-item h3{font-size:15px;margin:0 0 6px;color:var(--deep)}.faq-item p{font-size:13px;color:var(--muted);margin:0}@media(max-width:980px){.main-nav{display:none}.hamburger{display:block}.header-btns{margin-left:auto}.footer-main{grid-template-columns:repeat(2,1fr)}.mega-menu{display:none}}@media(max-width:700px){.container{width:min(100% - 28px,600px)}.topbar-inner{padding:7px 0;align-items:flex-start;gap:8px}.topbar-contact{flex-direction:column;gap:0;text-align:right;font-size:11px}.header-inner{height:66px;gap:8px}.header-btns .btn{display:none}.download-page-main{padding-top:46px}.download-hero h1{font-size:36px}.download-hero p{font-size:15px}.download-actions{flex-direction:column}.download-actions .btn{width:100%}.download-panel{padding:19px}.download-panel-head{display:block}.download-panel-head p{margin-top:5px}.download-grid,.steps,.faq-list{grid-template-columns:1fr}.footer-main{grid-template-columns:1fr;gap:25px;padding:38px 0 30px}.footer-bottom{display:block}.footer-bottom span{display:block;margin:4px 0}.logo span{font-size:16px}}