:root{
  --blue:#2980FE;--blue-dark:#1767D6;--blue-soft:#EAF3FF;--ice:#F5F8FD;--gray:#F7F9FC;
  --white:#FFFFFF;--text:#172033;--body:#465266;--muted:#718096;--line:#DCE6F2;--footer:#10233F;
  --shadow:0 16px 44px rgba(23,103,214,.10);--radius:24px;--container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC","PingFang TC","Microsoft JhengHei",Arial,sans-serif;color:var(--text);background:var(--white);line-height:1.75;overflow-x:hidden}
body.menu-open{overflow:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
.skip-link{position:fixed;left:16px;top:-80px;padding:10px 14px;background:var(--footer);color:#fff;z-index:9999;border-radius:10px}.skip-link:focus{top:16px}
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.94);backdrop-filter:blur(18px);border-bottom:1px solid rgba(220,230,242,.8)}
.header-inner{max-width:1360px;margin:auto;padding:12px 24px;min-height:76px;display:flex;align-items:center;gap:24px}
.brand{flex:0 0 auto;display:flex;align-items:center}.brand img{width:148px;max-height:46px;object-fit:contain}
.desktop-nav{display:flex;align-items:center;justify-content:center;gap:2px;flex:1;white-space:nowrap}
.nav-link{display:flex;align-items:center;min-height:44px;padding:8px 12px;border-radius:12px;font-weight:650;font-size:15px;color:#344258;transition:.2s ease}
.nav-link:hover,.nav-link:focus-visible,.nav-link.is-active{color:var(--blue-dark);background:var(--blue-soft);outline:none}
.nav-group{position:relative}.mega-menu{position:absolute;top:calc(100% + 12px);left:0;width:660px;padding:18px;display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:10px;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(8px);transition:.18s ease;pointer-events:none}
.nav-group:hover .mega-menu,.nav-group:focus-within .mega-menu{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
.mega-menu.compact{width:560px}.mega-menu.menu-right{left:auto;right:0}
.mega-intro{grid-row:span 2;padding:18px;border-radius:16px;background:linear-gradient(145deg,var(--blue-soft),#fff);border:1px solid #d7e7ff}.mega-intro strong{display:block;font-size:18px;color:var(--blue-dark);margin-bottom:4px}.mega-intro span{font-size:13px;color:var(--body)}
.mega-menu>a{padding:13px 14px;border-radius:14px;border:1px solid transparent}.mega-menu>a:hover,.mega-menu>a:focus-visible{border-color:var(--line);background:var(--ice);outline:none}.mega-menu b,.mega-menu small{display:block}.mega-menu b{font-size:14px}.mega-menu small{font-size:12px;color:var(--muted);line-height:1.5;margin-top:2px}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 22px;border-radius:14px;background:linear-gradient(135deg,var(--blue),var(--blue-dark));color:#fff;font-weight:750;box-shadow:0 10px 24px rgba(41,128,254,.22);transition:.2s ease}.download-btn:hover{transform:translateY(-1px);box-shadow:0 14px 30px rgba(41,128,254,.28)}
.desktop-more{position:relative}.more-toggle,.mobile-menu-button{min-width:46px;min-height:46px;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--text);font-weight:700}.more-toggle{padding:0 15px}.more-panel{position:absolute;right:0;top:calc(100% + 10px);min-width:180px;padding:8px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}.more-panel a{display:block;padding:10px 12px;border-radius:10px}.more-panel a:hover{background:var(--ice);color:var(--blue-dark)}
.mobile-menu-button{display:none;padding:11px}.mobile-menu-button span{display:block;width:22px;height:2px;background:var(--text);margin:4px auto;border-radius:5px}
.menu-overlay{position:fixed;inset:0;z-index:1090;background:rgba(16,35,63,.34);opacity:0;transition:.22s ease}.menu-overlay.is-visible{opacity:1}
.mobile-menu{position:fixed;z-index:1100;right:0;top:0;width:min(92vw,430px);height:100dvh;background:#fff;box-shadow:-18px 0 50px rgba(16,35,63,.18);padding:18px;transform:translateX(105%);transition:.25s ease;overflow-y:auto}.mobile-menu.is-open{transform:translateX(0)}
.mobile-menu-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line)}.mobile-menu-close{width:46px;height:46px;border:1px solid var(--line);background:#fff;border-radius:14px;font-size:30px;line-height:1}.mobile-menu nav{padding:12px 0}.mobile-home,.mobile-menu summary{display:flex;align-items:center;min-height:50px;padding:10px 4px;font-weight:750;border-bottom:1px solid #edf2f8}.mobile-menu summary{cursor:pointer;list-style:none}.mobile-menu summary::-webkit-details-marker{display:none}.mobile-menu summary:after{content:'+';margin-left:auto;color:var(--blue);font-size:22px}.mobile-menu details[open] summary:after{content:'−'}.mobile-menu details div{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:10px 0}.mobile-menu details a{padding:11px 12px;background:var(--ice);border-radius:12px;color:var(--body)}.mobile-menu-download{width:100%;margin-top:8px}
main{min-height:60vh}.container{width:min(var(--container),calc(100% - 40px));margin-inline:auto}.section{padding:92px 0}.section-sm{padding:64px 0}.section-head{max-width:760px;margin-bottom:34px}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--blue-dark);font-weight:800;margin-bottom:12px}.eyebrow:before{content:'';width:28px;height:2px;background:var(--blue);border-radius:10px}.section h2,.page-hero h1,.hero h1{margin:0 0 16px;line-height:1.15;letter-spacing:-.03em}.section h2{font-size:clamp(30px,4vw,48px)}.section-head p,.lead{font-size:18px;color:var(--body);margin:0}.muted{color:var(--muted)}
.hero{padding:76px 0 64px;background:radial-gradient(circle at 85% 15%,rgba(41,128,254,.18),transparent 34%),linear-gradient(180deg,#fff 0%,var(--ice) 100%)}.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;align-items:center;gap:56px}.hero h1{font-size:clamp(46px,6vw,78px);max-width:800px}.hero .lead{max-width:720px}.hero-actions,.button-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.button-secondary{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 20px;border-radius:14px;border:1px solid var(--line);background:#fff;color:var(--blue-dark);font-weight:750}.button-secondary:hover{border-color:#a9cbff;background:var(--blue-soft)}.tag-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.tag{padding:7px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;font-weight:700;color:#4d5b70}
.hero-visual{position:relative;min-height:520px;display:grid;place-items:center}.hero-visual:before{content:'';position:absolute;width:390px;height:390px;border-radius:50%;background:linear-gradient(145deg,#d9eaff,#f8fbff);box-shadow:inset 0 0 0 1px #dceaff}.hero-visual img{position:relative;z-index:2;max-height:490px;object-fit:contain}.float-note{position:absolute;z-index:3;max-width:180px;padding:12px 14px;border-radius:16px;background:rgba(255,255,255,.94);border:1px solid var(--line);box-shadow:var(--shadow);font-size:13px;font-weight:750}.float-note.one{left:0;top:80px}.float-note.two{right:0;top:190px}.float-note.three{left:30px;bottom:70px}
.capability-strip{margin-top:-26px;position:relative;z-index:4}.capability-grid{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);overflow:hidden}.capability-grid article{padding:26px 24px}.capability-grid article+article{border-left:1px solid var(--line)}.capability-grid h2{font-size:17px;margin:0 0 8px}.capability-grid p{font-size:14px;color:var(--body);margin:0}
.category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.category-card{min-height:230px;padding:28px;border-radius:22px;border:1px solid var(--line);background:#fff;display:flex;flex-direction:column;position:relative;overflow:hidden}.category-card:after{content:'';position:absolute;right:-40px;bottom:-50px;width:130px;height:130px;border-radius:50%;background:rgba(41,128,254,.08)}.category-card.wide{grid-column:span 2}.category-card.featured{background:linear-gradient(145deg,var(--blue),var(--blue-dark));color:#fff;border:none}.category-card.soft{background:var(--ice)}.category-card h3{font-size:23px;margin:0 0 10px;line-height:1.25}.category-card p{color:var(--body);margin:0 0 18px;position:relative;z-index:2}.category-card.featured p{color:rgba(255,255,255,.82)}.text-link{margin-top:auto;color:var(--blue-dark);font-weight:800;position:relative;z-index:2}.featured .text-link{color:#fff}
.split-feature{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:center;padding:46px;border-radius:30px;background:var(--blue-soft)}.split-feature.reverse{grid-template-columns:1.1fr .9fr}.visual-panel{min-height:430px;border-radius:24px;background:#fff;display:grid;place-items:center;padding:26px;border:1px solid rgba(220,230,242,.8)}.visual-panel img{max-height:390px;object-fit:contain}.content-panel{background:#fff;border-radius:24px;padding:34px;border:1px solid var(--line);box-shadow:0 14px 36px rgba(23,103,214,.07)}.content-panel h2{font-size:clamp(30px,4vw,46px)}.check-list,.plain-list{list-style:none;padding:0;margin:22px 0 0}.check-list li,.plain-list li{position:relative;padding:11px 0 11px 34px;border-bottom:1px solid #edf2f8}.check-list li:before{content:'✓';position:absolute;left:0;top:10px;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:var(--blue-soft);color:var(--blue-dark);font-weight:900;font-size:12px}.plain-list li:before{content:'•';position:absolute;left:8px;color:var(--blue);font-weight:900}
.offset-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}.offset-card{padding:38px;border-radius:26px;background:#fff;border:1px solid var(--line)}.offset-card:nth-child(2){margin-top:52px;background:var(--ice)}.offset-card h3{font-size:28px;margin:0 0 14px}.offset-card p{color:var(--body)}
.topic-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px}.topic-card{padding:38px;border-radius:28px;background:var(--ice);border:1px solid var(--line)}.topic-card.accent{background:linear-gradient(145deg,#e8f2ff,#fff)}.topic-card h3{font-size:30px;margin:0 0 14px}.topic-card p{color:var(--body)}
.security-band{background:linear-gradient(135deg,var(--footer),#174373);color:#fff}.security-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:50px;align-items:center}.security-grid h2{color:#fff}.security-grid p{color:#d8e5f6}.security-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}.security-list div{padding:17px 18px;border:1px solid rgba(255,255,255,.16);border-radius:16px;background:rgba(255,255,255,.06)}
.swap-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:34px;align-items:center}.swap-visual{padding:34px;border-radius:28px;background:var(--ice);border:1px solid var(--line)}.swap-visual img{max-height:360px;margin:auto}.check-panel{padding:34px;border-radius:26px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
.steps{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;counter-reset:step}.step{position:relative;padding:24px 18px;border-radius:20px;background:#fff;border:1px solid var(--line);min-height:240px}.step:before{counter-increment:step;content:counter(step,decimal-leading-zero);display:inline-grid;place-items:center;width:42px;height:42px;border-radius:13px;background:var(--blue);color:#fff;font-weight:900;margin-bottom:16px}.step h3{font-size:17px;line-height:1.3;margin:0 0 8px}.step p{font-size:14px;color:var(--body);margin:0 0 16px}.step a{color:var(--blue-dark);font-size:13px;font-weight:800}
.timeline{display:grid;gap:12px}.timeline article{display:grid;grid-template-columns:120px 1fr auto;gap:20px;align-items:center;padding:20px 24px;border-radius:18px;background:#fff;border:1px solid var(--line)}.timeline time{font-size:13px;color:var(--blue-dark);font-weight:800}.timeline h3{font-size:18px;margin:0 0 4px}.timeline p{font-size:14px;color:var(--body);margin:0}.timeline a{font-weight:800;color:var(--blue-dark)}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.review{padding:26px;border-radius:22px;background:#fff;border:1px solid var(--line)}.review p{margin:0;color:var(--body)}.review strong{display:block;margin-top:18px;color:var(--blue-dark)}
.faq-list{display:grid;gap:12px}.faq-item{border:1px solid var(--line);border-radius:18px;background:#fff;overflow:hidden}.faq-button{width:100%;min-height:58px;padding:16px 20px;border:0;background:#fff;text-align:left;font-weight:800;color:var(--text);display:flex;align-items:center;justify-content:space-between}.faq-button:after{content:'+';font-size:24px;color:var(--blue)}.faq-button[aria-expanded="true"]:after{content:'−'}.faq-panel{padding:0 20px 20px;color:var(--body)}.faq-panel p{margin:0}
.cta{padding:64px 40px;border-radius:30px;text-align:center;background:linear-gradient(135deg,var(--blue),var(--blue-dark));color:#fff}.cta h2{font-size:clamp(32px,5vw,52px);margin:0 0 12px}.cta p{max-width:760px;margin:0 auto 26px;color:#e7f0ff}.cta .download-btn{background:#fff;color:var(--blue-dark);box-shadow:none}
.page-hero{padding:80px 0;background:linear-gradient(180deg,var(--ice),#fff)}.page-hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}.page-hero h1{font-size:clamp(42px,6vw,68px)}.page-hero p{font-size:19px;color:var(--body);max-width:760px}.hero-side-card{padding:30px;border-radius:26px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}.hero-side-card h2{font-size:22px;margin:0 0 12px}.hero-side-card ul{margin:0;padding-left:20px;color:var(--body)}
.content-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.info-card{padding:28px;border-radius:22px;background:#fff;border:1px solid var(--line)}.info-card h3{font-size:21px;margin:0 0 10px}.info-card p{margin:0;color:var(--body)}.info-card:nth-child(2n){background:var(--ice)}
.prose{max-width:900px}.prose h2{font-size:34px;margin:50px 0 14px}.prose h3{font-size:23px;margin:30px 0 10px}.prose p{color:var(--body)}.prose ul,.prose ol{color:var(--body);padding-left:24px}.notice{padding:24px;border-left:4px solid var(--blue);border-radius:16px;background:var(--blue-soft);color:#314765}.notice strong{color:var(--blue-dark)}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:18px}table{width:100%;border-collapse:collapse;min-width:720px}th,td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}th{background:var(--ice);font-size:14px}td{color:var(--body)}
.site-footer{background:var(--footer);color:#fff;padding:64px 0 24px;margin-top:80px}.footer-grid,.footer-note{width:min(var(--container),calc(100% - 40px));margin:auto}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:44px}.footer-brand img{filter:brightness(0) invert(1);margin-bottom:18px}.footer-brand p{color:#c5d5e7;max-width:430px}.footer-grid h2{font-size:16px;margin:0 0 14px}.footer-grid a{display:block;color:#c5d5e7;padding:5px 0}.footer-grid a:hover{color:#fff}.footer-note{display:flex;justify-content:space-between;gap:30px;border-top:1px solid rgba(255,255,255,.12);padding-top:22px;margin-top:40px;color:#9fb3cb;font-size:13px}.footer-note p{margin:0;max-width:800px}
@media(max-width:1180px){.desktop-nav{display:none}.mobile-menu-button{display:block}.desktop-more{display:none}.header-inner{gap:16px}.header-actions{margin-left:auto}.steps{grid-template-columns:repeat(3,1fr)}.category-grid{grid-template-columns:repeat(2,1fr)}.category-card.wide{grid-column:span 1}.hero-grid,.page-hero-grid{grid-template-columns:1fr 1fr}.review-grid{grid-template-columns:1fr 1fr}}
@media(max-width:820px){.section{padding:70px 0}.section-sm{padding:52px 0}.header-inner{padding:10px 16px;min-height:68px}.brand img{width:125px}.header-download{min-height:44px;padding:8px 14px;font-size:14px}.hero{padding-top:48px}.hero-grid,.page-hero-grid,.split-feature,.split-feature.reverse,.offset-grid,.topic-grid,.security-grid,.swap-grid{grid-template-columns:1fr}.hero-visual{min-height:430px}.float-note{position:static;max-width:none}.hero-visual{grid-template-columns:1fr 1fr;gap:10px;align-content:center}.hero-visual:before{width:320px;height:320px;grid-column:1/-1;grid-row:1/2;justify-self:center}.hero-visual img{grid-column:1/-1;grid-row:1/2;max-height:390px;margin:auto}.capability-grid{grid-template-columns:1fr 1fr}.capability-grid article+article{border-left:0}.capability-grid article:nth-child(2n){border-left:1px solid var(--line)}.capability-grid article:nth-child(n+3){border-top:1px solid var(--line)}.split-feature{padding:24px}.visual-panel{min-height:340px}.content-panel{padding:26px}.offset-card:nth-child(2){margin-top:0}.security-list{grid-template-columns:1fr 1fr}.steps{grid-template-columns:1fr 1fr}.timeline article{grid-template-columns:100px 1fr}.timeline article>a{grid-column:2}.content-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-note{display:block}.footer-note p+p{margin-top:12px}}
@media(max-width:560px){.container,.footer-grid,.footer-note{width:min(100% - 28px,var(--container))}.header-inner{gap:8px}.brand img{width:104px}.header-download{padding:7px 11px;min-height:42px}.mobile-menu-button{min-width:42px;min-height:42px}.hero h1{font-size:42px}.hero .lead,.page-hero p,.section-head p{font-size:17px}.hero-actions,.button-row{display:grid}.hero-actions a,.button-row a{width:100%}.hero-visual{min-height:420px}.hero-visual:before{width:280px;height:280px}.capability-strip{margin-top:-8px}.capability-grid{grid-template-columns:1fr}.capability-grid article:nth-child(2n){border-left:0}.capability-grid article+article{border-top:1px solid var(--line)}.category-grid,.review-grid,.content-grid{grid-template-columns:1fr}.category-card{min-height:200px}.security-list{grid-template-columns:1fr}.steps{grid-template-columns:1fr}.step{min-height:auto}.timeline article{grid-template-columns:1fr;gap:7px}.timeline article>a{grid-column:1}.cta{padding:42px 22px}.footer-grid{grid-template-columns:1fr}.page-hero{padding:58px 0}.hero-side-card{padding:24px}.mobile-menu details div{grid-template-columns:1fr}}