*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;color:#43566a;background:#fff;line-height:1.72;overflow-x:hidden}a{color:#245f9e;text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto}.safety-bar{background:#edf4fb;color:#245f9e;text-align:center;padding:8px 20px;font-size:13px}.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.96);border-bottom:1px solid #dce7f2;backdrop-filter:blur(10px)}.header-inner{max-width:1280px;margin:auto;height:74px;display:flex;align-items:center;gap:24px;padding:0 24px}.brand{display:flex;align-items:center;gap:9px;font-weight:760;font-size:19px;color:#16283c;white-space:nowrap}.brand img{width:34px;height:34px;object-fit:contain}.desktop-nav{display:flex;align-items:center;justify-content:center;gap:4px;flex:1;height:100%}.nav-group{height:100%;display:flex;align-items:center}.nav-trigger{height:44px;border:0;background:transparent;color:#243b53;font:inherit;font-size:14px;padding:0 11px;cursor:pointer;border-radius:8px}.nav-trigger:hover,.nav-trigger:focus-visible,.nav-trigger[aria-expanded="true"]{background:#f5f8fc;color:#245f9e;outline:none}.mega{position:absolute;left:50%;top:73px;transform:translateX(-50%);width:min(1100px,calc(100vw - 40px));display:none;background:#fff;border:1px solid #dce7f2;box-shadow:0 18px 48px rgba(27,62,95,.13);padding:28px;border-radius:0 0 16px 16px;grid-template-columns:1.05fr 1.3fr .8fr;gap:32px}.nav-group.open .mega{display:grid}.mega h2{margin:0 0 8px;color:#16283c;font-size:20px}.mega p{font-size:14px;color:#718296}.mega-links{display:grid;grid-template-columns:1fr 1fr;gap:8px 20px}.mega-links a,.mega-feature a{padding:8px 0;border-bottom:1px solid #edf4fb;color:#304a63}.mega-feature{background:#f5f8fc;padding:18px;display:flex;flex-direction:column;gap:7px}.header-actions{display:flex;align-items:center;gap:10px}.lang-link{min-width:42px;text-align:center;font-weight:700}.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;background:#3f8fe5;color:white;border-radius:8px;font-weight:700}.download-btn:hover{text-decoration:none;background:#245f9e}.download-btn.small{min-height:40px;padding:0 16px}.mobile-open{display:none;min-height:44px;border:1px solid #dce7f2;background:#fff;border-radius:8px;padding:0 12px}.mobile-menu{display:none;position:fixed;inset:0;background:#fff;z-index:120;padding:16px 20px 30px;overflow:auto}.mobile-menu.active{display:block}.mobile-head{display:flex;justify-content:space-between;align-items:center;padding-bottom:16px;border-bottom:1px solid #dce7f2}.mobile-head>div{display:flex;align-items:center;gap:12px}.mobile-close{width:44px;height:44px;border:0;background:#f5f8fc;font-size:28px}.mobile-group-title{width:100%;height:52px;border:0;border-bottom:1px solid #dce7f2;background:#fff;display:flex;justify-content:space-between;align-items:center;font:inherit;font-weight:700;color:#16283c}.mobile-group-links{display:none;padding:6px 0 12px}.mobile-group.open .mobile-group-links{display:grid}.mobile-group-links a{min-height:44px;display:flex;align-items:center;padding:0 8px}.mobile-bottom{margin-top:24px;display:grid;gap:12px}.page-shell{max-width:1180px;margin:auto;padding:0 24px}.breadcrumb{font-size:13px;color:#718296;padding:24px 0;display:flex;gap:8px}.page-hero{padding:42px 0 52px;border-bottom:1px solid #dce7f2}.page-hero .eyebrow,.eyebrow{font-size:13px;letter-spacing:.08em;color:#3f8fe5;font-weight:800;text-transform:uppercase}.page-hero h1{max-width:850px;margin:8px 0 14px;font-size:clamp(36px,5vw,62px);line-height:1.08;color:#16283c}.page-hero p{max-width:760px;font-size:18px;color:#5b6f83}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:58px;padding:46px 0 80px}.article-body section{scroll-margin-top:110px;margin-bottom:48px}.article-body h2{font-size:30px;line-height:1.25;color:#16283c;margin:0 0 18px}.article-body h3{font-size:18px;color:#245f9e;margin:24px 0 10px}.article-body p{font-size:16px;margin:0 0 16px}.lead-p{font-size:18px!important;color:#304a63}.toc{position:sticky;top:110px;align-self:start;border-left:2px solid #dce7f2;padding-left:20px}.toc ol{padding-left:18px}.toc li{margin:8px 0}.toc a{font-size:14px;color:#718296}.check-list{padding-left:22px}.check-list li{margin:7px 0}.note{background:#edf4fb;border-left:4px solid #3f8fe5;padding:18px 20px;margin:24px 0}.risk-note{background:#153f66;color:#eaf4ff;padding:26px;border-radius:12px;margin:36px 0}.home-hero{background:linear-gradient(110deg,#fff 0,#fff 55%,#f5f8fc 55%,#edf4fb 100%)}.hero-inner{max-width:1280px;margin:auto;padding:74px 24px 70px;display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:52px}.hero-copy h1{font-size:clamp(42px,5vw,70px);line-height:1.04;color:#16283c;margin:10px 0 18px;letter-spacing:-.025em}.hero-copy .subtitle{font-size:21px;color:#245f9e;font-weight:650}.hero-copy p{max-width:720px;font-size:17px}.hero-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin:28px 0 24px}.text-links{display:flex;gap:18px;flex-wrap:wrap}.cap-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:25px}.cap-tags span{background:#eaf4ff;color:#245f9e;padding:5px 10px;border-radius:5px;font-size:13px}.hero-visual{position:relative;min-height:510px;display:flex;align-items:center;justify-content:center}.hero-visual:before{content:"";position:absolute;width:76%;height:76%;border:1px solid #bcd8f3;transform:rotate(8deg)}.hero-visual:after{content:"";position:absolute;width:58%;height:58%;background:#eaf4ff;left:8%;bottom:5%}.hero-visual img{position:relative;z-index:2;max-height:500px;object-fit:contain}.section{padding:76px 0}.section.alt{background:#f5f8fc}.section-head{max-width:760px;margin-bottom:34px}.section-head h2{font-size:38px;line-height:1.15;color:#16283c;margin:7px 0 12px}.task-strip{display:grid;grid-template-columns:1.25fr 1fr .9fr 1.1fr .95fr;border-top:1px solid #dce7f2;border-bottom:1px solid #dce7f2}.task{padding:24px 22px;border-right:1px solid #dce7f2}.task:last-child{border-right:0}.task .num{color:#3f8fe5;font-weight:800}.task h3{color:#16283c;margin:8px 0;font-size:18px}.task p{font-size:14px}.mosaic{display:grid;grid-template-columns:1.3fr .7fr 1fr;grid-template-rows:auto auto;gap:18px}.mosaic>article{border:1px solid #dce7f2;padding:28px;background:#fff}.mosaic .large{grid-row:span 2}.mosaic .wide{grid-column:span 2;background:#edf4fb}.mosaic img{display:block;max-height:210px;margin:12px auto 20px}.mosaic h3{color:#16283c;font-size:23px}.network-stage{display:grid;grid-template-columns:250px 1fr;gap:34px}.network-tabs{display:flex;flex-direction:column;border-left:1px solid #dce7f2}.network-tab{border:0;background:#fff;text-align:left;padding:16px 18px;font:inherit;color:#43566a;cursor:pointer}.network-tab[aria-selected="true"]{background:#eaf4ff;color:#245f9e;border-left:3px solid #3f8fe5}.network-panel{display:grid;grid-template-columns:1fr .75fr;gap:28px;align-items:center;margin-bottom:30px}.js .network-panel{display:none;margin-bottom:0}.js .network-panel.active{display:grid}.network-panel img{max-height:260px;margin:auto}.steps{position:relative;max-width:950px;margin:auto}.steps:before{content:"";position:absolute;left:50%;top:0;bottom:0;width:1px;background:#bcd8f3}.step{width:48%;padding:0 26px 44px}.step:nth-child(even){margin-left:52%}.step:nth-child(odd){text-align:right}.step .number{font-size:13px;color:#3f8fe5;font-weight:800}.step h3{font-size:22px;color:#16283c;margin:5px 0}.web3-flow{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px}.flow-list{counter-reset:flow}.flow-list li{list-style:none;counter-increment:flow;padding:16px 18px 16px 54px;border-bottom:1px solid #dce7f2;position:relative}.flow-list li:before{content:counter(flow,decimal-leading-zero);position:absolute;left:0;color:#3f8fe5;font-weight:800}.security-band{background:#153f66;color:#eaf4ff;padding:78px 0}.security-band h2{color:white;font-size:40px}.security-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}.security-grid img{max-height:280px;display:block;margin:auto}.security-band a{color:white}.security-check{background:rgba(255,255,255,.07);padding:28px}.security-check li{margin:10px 0}.academy-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:44px}.feature-article{border-top:4px solid #3f8fe5;padding-top:24px}.feature-article h3{font-size:30px;color:#16283c}.article-index article{padding:14px 0;border-bottom:1px solid #dce7f2}.article-index small{color:#3f8fe5;font-weight:700}.pos-layout{display:grid;grid-template-columns:1fr 1fr;gap:24px}.pos-layout article{padding:30px;border:1px solid #dce7f2}.updates{border-top:1px solid #dce7f2}.update-row{display:grid;grid-template-columns:130px 1fr auto;gap:22px;padding:20px 0;border-bottom:1px solid #dce7f2}.update-row small{color:#718296}.faq-item{border-bottom:1px solid #dce7f2;padding:4px 0}.faq-button{width:100%;cursor:pointer;min-height:56px;display:flex;align-items:center;text-align:left;border:0;background:transparent;font:inherit;font-weight:700;color:#16283c;padding:0}.faq-button:after{content:"+";margin-left:auto;color:#3f8fe5;font-size:22px}.faq-button[aria-expanded="true"]:after{content:"−"}.faq-answer p{padding:0 0 18px;margin:0}.cta{background:#edf4fb;padding:58px 0}.cta-inner{max-width:1050px;margin:auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;gap:30px}.cta h2{color:#16283c;font-size:34px;margin:0 0 8px}.site-footer{background:#123958;color:#cfe1f0}.footer-inner{max-width:1180px;margin:auto;padding:56px 24px;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}.site-footer .brand{color:white}.site-footer a{display:block;color:#dcecf9;margin:8px 0}.site-footer strong{color:white}.footer-warning{color:white}.footer-bottom{max-width:1180px;margin:auto;padding:18px 24px;border-top:1px solid rgba(255,255,255,.15);display:flex;gap:20px;justify-content:space-between;font-size:13px}.footer-bottom a{color:white;margin:0}
@media(max-width:1024px){.desktop-nav{display:none}.mobile-open{display:inline-flex;align-items:center}.article-layout{grid-template-columns:1fr}.toc{position:static;order:-1;border-left:0;background:#f5f8fc;padding:18px}.task-strip{grid-template-columns:1fr 1fr}.task{border-bottom:1px solid #dce7f2}.mosaic{grid-template-columns:1fr 1fr}.mosaic .large{grid-row:auto}.mosaic .wide{grid-column:span 2}.hero-inner{grid-template-columns:1fr .8fr}.footer-inner{grid-template-columns:1.4fr 1fr 1fr}.footer-inner>div:last-child{grid-column:2/4}}
@media(max-width:768px){.safety-bar{text-align:left;padding:8px 16px;line-height:1.45}.header-inner{height:64px;padding:0 15px;gap:10px}.header-actions{gap:6px}.download-btn.small{display:none}.page-shell{padding:0 18px}.home-hero{background:#fff}.hero-inner{grid-template-columns:1fr;padding:46px 18px 52px}.hero-copy h1{font-size:43px}.hero-visual{min-height:370px;background:#f5f8fc}.hero-visual img{max-height:350px}.task-strip{grid-template-columns:1fr}.task{border-right:0}.section{padding:58px 0}.section-head h2{font-size:32px}.mosaic,.academy-layout,.pos-layout,.security-grid,.web3-flow,.network-stage{grid-template-columns:1fr}.mosaic .wide{grid-column:auto}.network-tabs{flex-direction:row;overflow-x:auto;border-left:0;border-bottom:1px solid #dce7f2}.network-tab{white-space:nowrap}.network-tab[aria-selected="true"]{border-left:0;border-bottom:3px solid #3f8fe5}.network-panel,.js .network-panel.active{grid-template-columns:1fr}.steps:before{left:11px}.step,.step:nth-child(even){width:100%;margin-left:0;text-align:left;padding:0 0 34px 38px}.update-row{grid-template-columns:1fr}.cta-inner{align-items:flex-start;flex-direction:column}.footer-inner{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-inner>div:last-child{grid-column:auto}.footer-bottom{flex-direction:column}.article-body h2{font-size:27px}.page-hero h1{font-size:42px}}
@media(max-width:430px){.brand span{font-size:17px}.lang-link{min-width:34px}.mobile-open{padding:0 10px}.hero-copy h1{font-size:38px}.hero-actions{align-items:stretch;flex-direction:column}.hero-actions .download-btn{width:100%}.footer-inner{grid-template-columns:1fr}.footer-inner>div:last-child{grid-column:auto}.network-panel img{max-height:200px}}
:focus-visible{outline:3px solid rgba(63,143,229,.5);outline-offset:2px}button,a{touch-action:manipulation}