:root{--blue:#2980FE;--blue-dark:#1767D6;--blue-soft:#EAF3FF;--ice:#F5F8FD;--gray:#F7F9FC;--ink:#172033;--text:#465266;--muted:#718096;--line:#DCE6F2;--footer:#10233F;--white:#FFFFFF;--shadow:0 18px 50px rgba(23,67,120,.10);--radius:24px;--header-h:78px}*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang TC","Microsoft JhengHei",Arial,sans-serif;color:var(--text);background:#fff;line-height:1.75;overflow-x:hidden}body.menu-open{overflow:hidden}img{display:block;max-width:100%;height:auto}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}.shell{width:min(1180px,calc(100% - 40px));margin-inline:auto}.skip-link{position:fixed;left:16px;top:-80px;z-index:9999;background:#fff;padding:10px 16px;border-radius:12px;box-shadow:var(--shadow)}.skip-link:focus{top:12px}.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(220,230,242,.9);backdrop-filter:blur(18px)}.header-shell{height:var(--header-h);width:min(1320px,calc(100% - 32px));margin:auto;display:flex;align-items:center;gap:24px}.brand{display:flex;align-items:center;flex:0 0 auto}.brand img{width:172px;height:auto}.desktop-nav{display:flex;align-items:center;justify-content:center;gap:4px;min-width:0;flex:1;white-space:nowrap}.nav-link,.nav-trigger{display:flex;align-items:center;height:44px;padding:0 11px;border:0;background:transparent;color:var(--ink);font-weight:700;font-size:14px;border-radius:12px;cursor:pointer}.nav-link:hover,.nav-trigger:hover,.nav-link.is-active,.nav-group.is-active>.nav-trigger{color:var(--blue);background:var(--blue-soft)}.nav-group{position:relative}.nav-trigger:after{content:"";width:7px;height:7px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);margin-left:8px;margin-top:-4px}.mega-menu{position:absolute;top:52px;left:50%;transform:translate(-50%,12px);width:720px;display:grid;grid-template-columns:1.15fr repeat(2,1fr);gap:10px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:0 28px 70px rgba(16,35,63,.16);opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease}.mega-menu.compact{width:610px}.mega-menu.align-right{left:auto;right:0;transform:translate(0,12px)}.nav-group.is-open .mega-menu,.nav-group:hover .mega-menu,.nav-group:focus-within .mega-menu{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}.nav-group.is-open .mega-menu.align-right,.nav-group:hover .mega-menu.align-right,.nav-group:focus-within .mega-menu.align-right{transform:translate(0,0)}.mega-heading{grid-row:span 2;padding:18px;border-radius:18px;background:linear-gradient(145deg,#EAF3FF,#F7F9FC);display:flex;flex-direction:column;gap:8px}.mega-heading strong{color:var(--ink);font-size:20px}.mega-heading span,.mega-menu a span{font-size:13px;color:var(--muted);white-space:normal}.mega-menu a{padding:13px 14px;border-radius:16px;border:1px solid transparent;display:flex;flex-direction:column}.mega-menu a:hover,.mega-menu a:focus{border-color:var(--line);background:var(--ice);outline:none}.mega-menu a b{color:var(--ink);font-size:14px}.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:14px;font-weight:800;border:1px solid transparent;transition:.18s ease;cursor:pointer}.button:hover{transform:translateY(-2px)}.button-primary{background:linear-gradient(135deg,var(--blue),var(--blue-dark));color:#fff;box-shadow:0 12px 28px rgba(41,128,254,.25)}.button-secondary{background:#fff;color:var(--blue-dark);border-color:var(--line)}.button-ghost{background:var(--blue-soft);color:var(--blue-dark)}.button-small{min-height:42px;padding-inline:17px;font-size:14px}.button-block{width:100%}.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:13px;background:#fff;padding:10px;align-items:center;justify-content:center;flex-direction:column;gap:5px}.menu-toggle span{width:20px;height:2px;background:var(--ink);border-radius:2px}.menu-overlay{position:fixed;inset:0;z-index:1100;background:rgba(16,35,63,.48);opacity:0;transition:.22s}.menu-overlay.is-visible{opacity:1}.mobile-menu{position:fixed;z-index:1200;top:0;right:0;width:min(430px,92vw);height:100dvh;background:#fff;transform:translateX(105%);transition:.25s ease;display:flex;flex-direction:column;box-shadow:-30px 0 80px rgba(16,35,63,.2)}.mobile-menu.is-open{transform:translateX(0)}.mobile-menu-head{min-height:76px;padding:12px 18px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}.mobile-menu-head .brand img{width:150px}.menu-close{width:44px;height:44px;border:0;background:var(--ice);border-radius:13px;color:var(--ink);font-size:30px;line-height:1}.mobile-menu-body{padding:14px 18px 28px;overflow:auto}.mobile-home,.mobile-menu summary{min-height:52px;display:flex;align-items:center;padding:0 14px;border-radius:14px;color:var(--ink);font-weight:800;cursor:pointer}.mobile-home:hover,.mobile-menu summary:hover{background:var(--ice)}.mobile-menu details{border-bottom:1px solid var(--line)}.mobile-menu details>div{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:0 10px 14px}.mobile-menu details a{min-height:44px;display:flex;align-items:center;padding:8px 12px;border-radius:12px;background:var(--ice);font-size:14px}.mobile-menu-foot{padding:16px 18px;border-top:1px solid var(--line)}main{display:block}.hero{position:relative;overflow:hidden;padding:82px 0 70px;background:linear-gradient(145deg,#fff 15%,#F5F8FD 55%,#EAF3FF)}.hero:before{content:"";position:absolute;width:520px;height:520px;border-radius:50%;right:-180px;top:-240px;background:rgba(41,128,254,.10)}.hero-grid{position:relative;display:grid;grid-template-columns:1.08fr .92fr;align-items:center;gap:58px}.eyebrow{display:inline-flex;align-items:center;gap:9px;padding:7px 12px;background:var(--blue-soft);color:var(--blue-dark);border-radius:999px;font-weight:800;font-size:13px;letter-spacing:.04em}.eyebrow:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--blue)}h1,h2,h3{margin:0;color:var(--ink);line-height:1.18}h1{font-size:clamp(42px,5vw,72px);letter-spacing:-.045em;margin-top:20px}h2{font-size:clamp(30px,3.4vw,48px);letter-spacing:-.025em}h3{font-size:22px}.lead{font-size:20px;color:#526077;max-width:760px}.hero p{max-width:700px}.hero-actions,.section-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.tag{padding:8px 13px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.75);font-size:14px;color:var(--ink);font-weight:700}.hero-visual{position:relative}.hero-visual img{width:100%;border-radius:32px;box-shadow:0 30px 70px rgba(23,103,214,.16)}.capability-strip{margin-top:-34px;position:relative;z-index:3}.capability-grid{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);overflow:hidden}.capability-item{padding:24px 25px;border-right:1px solid var(--line)}.capability-item:last-child{border-right:0}.capability-item h3{font-size:17px;margin-bottom:7px}.capability-item p{font-size:14px;margin:0;color:var(--muted);line-height:1.65}.section{padding:92px 0}.section-sm{padding:66px 0}.section-ice{background:var(--ice)}.section-blue{background:linear-gradient(140deg,#EAF3FF,#F7FAFF)}.section-dark{background:linear-gradient(135deg,#10233F,#174776);color:#D9E6F8}.section-dark h2,.section-dark h3{color:#fff}.section-dark p{color:#D9E6F8}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:36px}.section-heading p{max-width:650px;margin:0;color:var(--muted)}.category-mosaic{display:grid;grid-template-columns:repeat(12,1fr);gap:18px}.category-card{grid-column:span 3;min-height:210px;padding:26px;border-radius:24px;border:1px solid var(--line);background:#fff;display:flex;flex-direction:column;justify-content:space-between;box-shadow:0 12px 35px rgba(23,67,120,.06)}.category-card:nth-child(1){grid-column:span 6}.category-card:nth-child(2),.category-card:nth-child(3),.category-card:nth-child(4){grid-column:span 2}.category-card:nth-child(5),.category-card:nth-child(6),.category-card:nth-child(7){grid-column:span 4}.category-card:nth-child(8){grid-column:span 2}.category-card:nth-child(9),.category-card:nth-child(10){grid-column:span 5}.category-card.featured{background:linear-gradient(135deg,#2980FE,#1767D6);border-color:transparent}.category-card.featured h3,.category-card.featured p,.category-card.featured a{color:#fff}.category-card.soft{background:var(--blue-soft)}.category-card h3{margin-bottom:12px}.category-card p{margin:0 0 20px;color:var(--muted)}.text-link{color:var(--blue-dark);font-weight:800}.text-link:after{content:" →"}.feature-panel{display:grid;grid-template-columns:.9fr 1.1fr;gap:54px;align-items:center;padding:48px;border-radius:32px;background:linear-gradient(135deg,#EAF3FF,#F8FBFF)}.feature-panel.reverse{grid-template-columns:1.1fr .9fr}.feature-panel img{border-radius:26px;background:#fff;box-shadow:var(--shadow)}.check-list,.plain-list{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:12px}.check-list li,.plain-list li{position:relative;padding-left:34px}.check-list li:before{content:"✓";position:absolute;left:0;top:.1em;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:var(--blue);color:#fff;font-size:13px;font-weight:900}.plain-list li:before{content:"";position:absolute;left:6px;top:.72em;width:8px;height:8px;border-radius:50%;background:var(--blue)}.split-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.topic-block{padding:38px;border-radius:28px;background:#fff;border:1px solid var(--line)}.topic-block.offset{margin-top:48px}.topic-block.tint{background:var(--blue-soft)}.topic-block p{color:var(--muted)}.topic-block .mini-label{display:block;color:var(--blue-dark);font-size:13px;font-weight:900;text-transform:uppercase;letter-spacing:.1em;margin-bottom:14px}.visual-card{overflow:hidden;border-radius:30px;background:#fff;border:1px solid var(--line)}.visual-card img{width:100%;aspect-ratio:4/3;object-fit:contain;background:var(--ice)}.visual-card .content{padding:28px}.security-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:34px;align-items:start}.security-highlight{padding:42px;border-radius:30px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18)}.security-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.security-point{padding:18px;border-radius:18px;background:rgba(255,255,255,.08)}.security-point b{display:block;color:#fff;margin-bottom:4px}.security-point span{font-size:14px}.swap-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:38px;align-items:center}.swap-layout img{border-radius:30px}.check-panel{padding:36px;border-radius:28px;background:#fff;border:1px solid var(--line)}.step-flow{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;position:relative}.step-flow:before{content:"";position:absolute;left:6%;right:6%;top:26px;height:2px;background:var(--line)}.step{position:relative;padding-top:62px}.step-number{position:absolute;top:0;left:0;width:52px;height:52px;border-radius:18px;background:#fff;border:2px solid var(--blue);display:grid;place-items:center;color:var(--blue-dark);font-weight:900;z-index:1}.step h3{font-size:17px;margin-bottom:9px}.step p{font-size:14px;color:var(--muted)}.notice-list{display:grid;gap:0;border-top:1px solid var(--line)}.notice-item{display:grid;grid-template-columns:135px 1fr auto;gap:24px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line)}.notice-item time{font-size:13px;font-weight:800;color:var(--blue-dark)}.notice-item h3{font-size:18px;margin-bottom:4px}.notice-item p{margin:0;color:var(--muted)}.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.review{padding:26px;border-radius:22px;background:#fff;border:1px solid var(--line)}.review:nth-child(2),.review:nth-child(5){background:var(--blue-soft)}.review p{margin:0}.review span{display:block;margin-top:16px;color:var(--blue-dark);font-weight:800;font-size:13px}.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:64px;padding:15px 20px;border:0;background:#fff;color:var(--ink);display:flex;align-items:center;justify-content:space-between;text-align:left;font-weight:800;cursor:pointer}.faq-button:after{content:"+";font-size:25px;color:var(--blue)}.faq-item.is-open .faq-button:after{content:"−"}.faq-panel{padding:0 20px 20px;color:var(--muted)}.faq-panel p{margin:0}.cta-band{position:relative;overflow:hidden;padding:62px;border-radius:32px;background:linear-gradient(135deg,#2980FE,#1767D6);text-align:center;color:#EAF3FF}.cta-band:after{content:"";position:absolute;width:280px;height:280px;border-radius:50%;background:rgba(255,255,255,.09);right:-100px;top:-120px}.cta-band h2{color:#fff}.cta-band p{max-width:700px;margin:16px auto 0}.cta-band .section-actions{justify-content:center}.page-hero{padding:74px 0 56px;background:linear-gradient(135deg,#F5F8FD,#EAF3FF)}.page-hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}.page-hero h1{font-size:clamp(40px,5vw,64px)}.page-hero .summary{font-size:19px;max-width:760px}.page-hero-card{padding:30px;border-radius:28px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}.page-hero-card strong{color:var(--ink);display:block;font-size:18px;margin-bottom:10px}.content-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.info-card{padding:28px;border-radius:24px;border:1px solid var(--line);background:#fff}.info-card:nth-child(3n+2){background:var(--ice)}.info-card h3{margin-bottom:10px}.info-card p{color:var(--muted);margin:0}.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:36px;align-items:start}.article{font-size:17px}.article section{margin-bottom:46px}.article h2{font-size:34px;margin-bottom:18px}.article h3{font-size:21px;margin:28px 0 10px}.article p{margin:0 0 16px}.side-nav{position:sticky;top:calc(var(--header-h) + 24px);padding:22px;border-radius:22px;background:var(--ice);border:1px solid var(--line)}.side-nav strong{display:block;color:var(--ink);margin-bottom:12px}.side-nav a{display:block;padding:9px 10px;border-radius:10px;color:var(--muted)}.side-nav a:hover{background:#fff;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:650px;background:#fff}th,td{text-align:left;padding:15px 16px;border-bottom:1px solid var(--line)}th{background:var(--ice);color:var(--ink)}.alert{padding:22px 24px;border-radius:20px;background:#FFF8E8;border:1px solid #F1D59C;color:#6A542B}.alert.blue{background:var(--blue-soft);border-color:#BFD8FF;color:#214A80}.contact-options{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.contact-option{padding:30px;border:1px solid var(--line);border-radius:24px;background:#fff}.contact-option h3{margin-bottom:10px}.contact-option p{color:var(--muted)}.site-footer{padding:66px 0 24px;background:var(--footer);color:#BFCDE0}.footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:42px}.footer-brand img{width:190px;filter:brightness(0) invert(1)}.footer-brand p{max-width:420px}.site-footer h2{font-size:16px;color:#fff;margin-bottom:16px}.site-footer a{display:block;margin:8px 0;color:#C7D5E8}.site-footer a:hover{color:#fff}.footer-bottom{display:flex;justify-content:space-between;gap:30px;align-items:center;margin-top:46px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);font-size:13px}.footer-bottom div{display:flex;gap:18px}.footer-bottom a{display:inline;margin:0}
@media(max-width:1120px){.desktop-nav{display:none}.menu-toggle{display:flex}.header-shell{gap:16px}.header-actions{margin-left:auto}.hero-grid,.page-hero-grid{grid-template-columns:1fr 1fr}.category-mosaic{grid-template-columns:repeat(2,1fr)}.category-card,.category-card:nth-child(n){grid-column:span 1}.category-card.featured,.category-card.wide{grid-column:span 2}.step-flow{grid-template-columns:repeat(3,1fr)}.step-flow:before{display:none}.reviews{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.5fr repeat(2,1fr)}}
@media(max-width:840px){:root{--header-h:70px}.shell{width:min(100% - 28px,720px)}.header-shell{width:calc(100% - 22px);height:70px}.brand img{width:144px}.button-small{min-height:42px;padding-inline:14px}.hero{padding:58px 0 52px}.hero-grid,.page-hero-grid,.feature-panel,.feature-panel.reverse,.security-wrap,.swap-layout,.article-grid{grid-template-columns:1fr}.hero-visual{max-width:650px;margin:auto}.capability-strip{margin-top:0;padding-top:16px}.capability-grid{grid-template-columns:1fr 1fr}.capability-item:nth-child(2){border-right:0}.capability-item:nth-child(-n+2){border-bottom:1px solid var(--line)}.category-mosaic{grid-template-columns:1fr 1fr}.category-card,.category-card:nth-child(n){grid-column:span 1}.category-card.featured,.category-card.wide{grid-column:span 2}.section{padding:70px 0}.section-heading{align-items:start;flex-direction:column}.feature-panel{padding:28px}.topic-block.offset{margin-top:0}.step-flow{grid-template-columns:1fr 1fr}.notice-item{grid-template-columns:110px 1fr}.notice-item .text-link{display:none}.content-grid,.contact-options{grid-template-columns:1fr 1fr}.side-nav{position:static}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-bottom{align-items:flex-start;flex-direction:column}.page-hero-card{display:none}}
@media(max-width:560px){.brand img{width:132px}.header-actions .button-small{padding-inline:12px;font-size:13px}.hero h1{font-size:42px}.lead{font-size:18px}.hero-actions,.section-actions{display:grid;grid-template-columns:1fr}.button{width:100%}.tag-row{gap:7px}.capability-grid,.category-mosaic,.split-grid,.reviews,.content-grid,.contact-options,.security-grid,.step-flow{grid-template-columns:1fr}.capability-item{border-right:0;border-bottom:1px solid var(--line)}.capability-item:last-child{border-bottom:0}.category-card,.category-card:nth-child(n),.category-card.featured,.category-card.wide{grid-column:span 1}.section{padding:58px 0}.section-sm{padding:48px 0}.section-heading{margin-bottom:26px}.feature-panel,.topic-block,.security-highlight,.check-panel{padding:24px}.notice-item{grid-template-columns:1fr;gap:4px}.cta-band{padding:42px 22px}.mobile-menu details>div{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.footer-bottom div{flex-direction:column;gap:4px}.page-hero{padding:50px 0 42px}.page-hero h1{font-size:40px}.article h2{font-size:30px}.table-wrap{margin-inline:-2px}}