:root{--bg:#fff;--soft:#f5f8fc;--soft2:#edf4fb;--blue:#3f8fe5;--blue2:#245f9e;--deep:#153f66;--title:#16283c;--text:#43566a;--muted:#718296;--border:#dce7f2;--tag:#eaf4ff;--footer:#123958;--max:1180px;--shadow:0 18px 50px rgba(30,77,117,.12);--radius:22px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:92px}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;line-height:1.72;-webkit-font-smoothing:antialiased;overflow-x:hidden}body.menu-open{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}img,svg{max-width:100%;height:auto}.skip-link{position:fixed;left:12px;top:-100px;z-index:9999;background:#fff;padding:10px 14px;border:1px solid var(--border)}.skip-link:focus{top:12px}.security-strip{background:var(--soft2);color:#345874;padding:9px 20px;text-align:center;font-size:13px;border-bottom:1px solid var(--border)}.site-header{position:sticky;top:0;z-index:200;background:rgba(255,255,255,.96);border-bottom:1px solid rgba(220,231,242,.9);backdrop-filter:blur(12px)}.header-inner{max-width:var(--max);height:74px;margin:auto;padding:0 20px;display:flex;align-items:center;gap:24px}.brand{display:inline-flex;align-items:center;flex:0 0 auto}.brand img{display:block;width:146px;height:38px;object-fit:contain}.desktop-nav{display:flex;align-items:stretch;gap:2px;flex:1;justify-content:center;height:100%}.nav-group{position:relative;display:flex;align-items:center}.nav-trigger{height:44px;border:0;background:transparent;color:var(--title);padding:0 10px;border-radius:10px;cursor:pointer;font-weight:700;font-size:14px;display:flex;align-items:center;gap:5px}.nav-trigger:hover,.nav-trigger:focus-visible,.nav-trigger[aria-expanded="true"]{background:var(--soft);outline:none}.mega-menu{position:fixed;left:50%;transform:translateX(-50%);top:118px;width:min(1100px,calc(100vw - 40px));display:grid;grid-template-columns:1.05fr 1.25fr .9fr;gap:28px;padding:30px;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);border-radius:18px;z-index:250}.mega-menu[hidden]{display:none}.mega-overview{padding-right:20px;border-right:1px solid var(--border)}.eyebrow,.mini-label{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--blue2);font-weight:800}.mega-overview p{margin:8px 0 14px;font-size:14px}.text-link{color:var(--blue2);font-weight:700}.mega-links{display:grid;grid-template-columns:1fr 1fr;align-content:start;gap:7px 14px}.mega-links a,.mega-featured a{padding:9px 8px;border-radius:8px;color:var(--title)}.mega-links a:hover,.mega-featured a:hover{background:var(--soft)}.mega-featured{display:flex;flex-direction:column;gap:5px;background:var(--soft);padding:18px;border-radius:14px}.header-actions{display:flex;align-items:center;gap:10px}.lang-switch{min-width:42px;text-align:center;color:var(--blue2);font-weight:800}.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;background:var(--blue2);color:#fff;border-radius:12px;font-weight:800;border:1px solid var(--blue2);transition:.2s}.download-btn:hover{background:var(--deep)}.download-btn.compact{min-height:42px;padding:0 16px;font-size:14px}.mobile-menu-toggle{display:none;min-height:44px;border:1px solid var(--border);background:#fff;border-radius:10px;padding:0 12px;color:var(--title);font-weight:700}.mobile-menu{position:fixed;inset:0;background:#fff;z-index:500;display:flex;flex-direction:column}.mobile-menu[hidden]{display:none}.mobile-menu-head{height:76px;padding:0 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.mobile-menu-tools{display:flex;align-items:center;gap:15px;font-weight:700}.mobile-close{width:44px;height:44px;border:1px solid var(--border);background:#fff;border-radius:10px;font-size:26px;line-height:1}.mobile-menu-body{overflow:auto;flex:1;padding:8px 20px}.mobile-group{border-bottom:1px solid var(--border)}.mobile-accordion{width:100%;min-height:54px;display:flex;align-items:center;justify-content:space-between;border:0;background:#fff;color:var(--title);font-weight:800;text-align:left}.mobile-links{padding:0 0 16px;display:grid;grid-template-columns:1fr 1fr;gap:8px 12px}.mobile-links[hidden]{display:none}.mobile-links a{padding:9px 0;color:var(--text)}.mobile-links .overview-link{color:var(--blue2);font-weight:800}.mobile-menu-foot{padding:16px 20px 24px;border-top:1px solid var(--border);display:grid;grid-template-columns:auto auto 1fr;align-items:center;gap:18px}.mobile-menu-foot .download-btn{justify-self:end}
main{min-height:50vh}.container{width:min(var(--max),calc(100% - 40px));margin:0 auto}.hero{padding:76px 0 68px;background:linear-gradient(100deg,#fff 0%,#fff 53%,#f3f8fd 53%,#edf5fc 100%);position:relative;overflow:hidden}.hero:after{content:"";position:absolute;width:360px;height:360px;border:1px solid rgba(63,143,229,.20);border-radius:50%;right:-120px;top:40px}.hero-grid{display:grid;grid-template-columns:1.18fr .82fr;align-items:center;gap:50px;position:relative;z-index:1}.kicker{color:var(--blue2);font-weight:800;letter-spacing:.08em;text-transform:uppercase;font-size:13px}.hero h1{font-size:clamp(38px,5vw,66px);line-height:1.08;margin:14px 0 20px;color:var(--title);letter-spacing:-.03em;max-width:780px}.hero-subtitle{font-size:20px;color:var(--blue2);font-weight:700;margin:0 0 15px}.hero-copy{font-size:17px;max-width:710px}.hero-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin:30px 0 20px}.secondary-link{min-height:44px;display:inline-flex;align-items:center;padding:0 4px;color:var(--blue2);font-weight:800}.hero-tags{display:flex;flex-wrap:wrap;gap:8px}.hero-tags span{background:var(--tag);color:#2b5d88;padding:6px 10px;border-radius:7px;font-size:13px}.product-stage{position:relative;min-height:500px;display:flex;align-items:center;justify-content:center}.product-stage:before,.product-stage:after{content:"";position:absolute;border:1px solid rgba(63,143,229,.22);border-radius:28px;transform:rotate(8deg)}.product-stage:before{width:78%;height:72%;background:rgba(255,255,255,.55)}.product-stage:after{width:66%;height:58%;transform:rotate(-5deg)}.product-stage img{position:relative;z-index:2;max-height:480px;object-fit:contain;filter:drop-shadow(0 30px 30px rgba(31,82,126,.18))}.section{padding:82px 0}.section.alt{background:var(--soft)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:40px}.section-head h2{font-size:clamp(28px,4vw,44px);line-height:1.16;margin:5px 0;color:var(--title)}.section-head p{max-width:620px;margin:0}.task-strip{display:grid;grid-template-columns:1.1fr .95fr 1.2fr .9fr 1.05fr;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.task-item{padding:24px 20px;border-right:1px solid var(--border);min-height:170px}.task-item:last-child{border-right:0}.task-no{font-size:12px;color:var(--blue2);font-weight:800}.task-item h3{margin:10px 0 8px;color:var(--title)}.task-item p{font-size:14px;margin:0 0 8px}.task-item a{color:var(--blue2);font-weight:700;font-size:14px}.mosaic{display:grid;grid-template-columns:1.15fr .85fr 1fr;grid-template-rows:auto auto;gap:18px}.mosaic article{border:1px solid var(--border);border-radius:18px;padding:28px;background:#fff;min-height:230px;overflow:hidden}.mosaic .wide{grid-column:span 2;display:grid;grid-template-columns:1.2fr .8fr;gap:20px;align-items:center}.mosaic .tall{grid-row:span 2;background:var(--soft2)}.mosaic h3{font-size:24px;margin:0 0 10px;color:var(--title)}.mosaic ul{padding-left:18px}.mosaic img{max-height:230px;object-fit:contain;margin:auto}.network-explorer{display:grid;grid-template-columns:280px 1fr;gap:34px}.network-tabs{display:flex;flex-direction:column;gap:8px}.network-tab{border:0;background:transparent;min-height:50px;text-align:left;border-left:3px solid transparent;padding:10px 16px;color:var(--text);font-weight:700;cursor:pointer}.network-tab[aria-selected="true"]{border-left-color:var(--blue);background:#fff;color:var(--blue2)}.network-stage{background:#fff;border:1px solid var(--border);border-radius:20px;padding:34px}.network-panel{display:grid;grid-template-columns:1fr 280px;gap:30px;align-items:center}.network-panel[hidden]{display:none}.network-panel h3{font-size:30px;margin:0 0 12px;color:var(--title)}.network-panel img{max-height:240px;object-fit:contain}.journey{position:relative}.journey:before{content:"";position:absolute;left:50%;top:8px;bottom:8px;width:1px;background:var(--border)}.step{display:grid;grid-template-columns:1fr 80px 1fr;align-items:center;margin:0 0 24px}.step:nth-child(even) .step-content{grid-column:3}.step:nth-child(even) .step-no{grid-column:2;grid-row:1}.step:nth-child(even) .step-spacer{grid-column:1}.step-content{background:#fff;border:1px solid var(--border);padding:22px 24px;border-radius:14px}.step-content h3{margin:0 0 7px;color:var(--title)}.step-no{grid-column:2;display:flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:50%;background:var(--blue2);color:#fff;font-weight:800;justify-self:center;z-index:1}.process-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px;align-items:start}.process-list{border-left:2px solid var(--border);padding-left:28px}.process-list li{list-style:none;margin:0 0 18px;position:relative}.process-list li:before{content:"";position:absolute;left:-35px;top:9px;width:12px;height:12px;border-radius:50%;background:var(--blue)}.notice{background:var(--tag);border-left:4px solid var(--blue);padding:16px 18px;border-radius:0 10px 10px 0}.security-zone{background:var(--deep);color:#e8f4ff}.security-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}.security-zone h2,.security-zone h3{color:#fff}.security-zone .text-link{color:#bfe0ff}.security-checks{border:1px solid rgba(255,255,255,.18);padding:28px;border-radius:18px;background:rgba(255,255,255,.06)}.security-checks img{max-height:190px;display:block;margin:0 auto 18px;filter:brightness(1.15)}.security-checks ul{padding:0;margin:0;list-style:none}.security-checks li{padding:10px 0;border-top:1px solid rgba(255,255,255,.12)}.editorial{display:grid;grid-template-columns:1.25fr .75fr;gap:50px}.featured-article{padding-right:30px;border-right:1px solid var(--border)}.featured-article h3{font-size:32px;line-height:1.2;color:var(--title)}.article-index{display:flex;flex-direction:column}.article-row{padding:16px 0;border-bottom:1px solid var(--border)}.article-row span{font-size:12px;color:var(--blue2);font-weight:800}.article-row h3{font-size:17px;margin:4px 0;color:var(--title)}.staking-split{display:grid;grid-template-columns:1fr 1fr;gap:20px}.knowledge-pane{padding:34px;border:1px solid var(--border);border-radius:18px;background:#fff}.knowledge-pane h3{font-size:28px;color:var(--title)}.updates{border-top:1px solid var(--border)}.update-row{display:grid;grid-template-columns:130px 1fr 80px;gap:24px;padding:21px 0;border-bottom:1px solid var(--border);align-items:start}.update-tag{font-size:12px;color:var(--blue2);font-weight:800}.update-row h3{margin:0 0 5px;color:var(--title);font-size:18px}.update-row a{color:var(--blue2);font-weight:700}.faq-list{border-top:1px solid var(--border)}.faq-item{border-bottom:1px solid var(--border)}.faq-question{width:100%;min-height:62px;background:transparent;border:0;text-align:left;display:flex;justify-content:space-between;align-items:center;color:var(--title);font-weight:800;padding:12px 0;cursor:pointer}.faq-answer{padding:0 40px 20px 0}.faq-answer[hidden]{display:none}.download-cta{background:var(--soft2);border:1px solid var(--border);border-radius:24px;padding:48px;display:flex;justify-content:space-between;align-items:center;gap:30px}.download-cta h2{margin:0 0 8px;color:var(--title);font-size:34px}.download-cta p{margin:0;max-width:650px}.breadcrumbs{font-size:13px;color:var(--muted);padding:22px 0 0}.breadcrumbs a{color:var(--blue2)}.page-hero{padding:54px 0 44px;border-bottom:1px solid var(--border);background:linear-gradient(180deg,#fff 0,#f8fbfe 100%)}.page-hero h1{font-size:clamp(36px,5vw,58px);line-height:1.12;color:var(--title);margin:12px 0 16px}.page-hero p{font-size:18px;max-width:790px;margin:0}.page-hero .topic-list{display:flex;gap:8px;flex-wrap:wrap;margin-top:22px}.topic-list span{padding:6px 10px;background:var(--tag);color:#345f82;border-radius:7px;font-size:13px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:58px;padding:54px 0 80px}.article-body h2{font-size:30px;line-height:1.24;color:var(--title);margin:48px 0 16px;scroll-margin-top:100px}.article-body h2:first-child{margin-top:0}.article-body h3{color:var(--title);font-size:20px;margin-top:26px}.article-body p{margin:0 0 18px}.article-body ul,.article-body ol{padding-left:22px}.article-body li{margin-bottom:8px}.article-body .callout{margin:30px 0;padding:20px 22px;background:var(--soft2);border-left:4px solid var(--blue);border-radius:0 12px 12px 0}.article-body .risk-callout{background:#f2f7fb;border-left-color:var(--deep)}.toc{position:sticky;top:105px;align-self:start;border-left:1px solid var(--border);padding-left:20px}.toc-title{font-weight:800;color:var(--title);margin-bottom:10px}.toc a{display:block;padding:6px 0;font-size:14px;color:var(--muted)}.toc a.active{color:var(--blue2);font-weight:800}.mobile-toc{display:none;margin:24px 0;border:1px solid var(--border);border-radius:12px}.mobile-toc summary{padding:12px 15px;font-weight:800;color:var(--title);cursor:pointer}.mobile-toc nav{padding:0 15px 12px}.mobile-toc a{display:block;padding:7px 0}.support-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:20px}.support-panel{border:1px solid var(--border);border-radius:18px;padding:28px}.support-panel h2{margin-top:0;color:var(--title)}.service-links{display:grid;grid-template-columns:1fr 1fr;gap:12px}.service-links a{padding:16px;border:1px solid var(--border);border-radius:12px;color:var(--blue2);font-weight:700}.glossary-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}.term{padding:18px 0;border-bottom:1px solid var(--border)}.term strong{display:block;color:var(--title);margin-bottom:4px}.site-footer{background:var(--footer);color:#d9e9f7;padding:58px 0 24px}.footer-inner{width:min(var(--max),calc(100% - 40px));margin:auto;display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:44px}.footer-inner h2{font-size:15px;color:#fff;margin:0 0 14px}.footer-inner>div:not(:first-child){display:flex;flex-direction:column;gap:9px}.footer-inner a:hover{color:#fff}.footer-brand img{filter:brightness(0) invert(1)}.footer-brand-col p{font-size:14px}.footer-note{color:#bfe0ff}.footer-bottom{width:min(var(--max),calc(100% - 40px));margin:38px auto 0;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);display:grid;grid-template-columns:auto 1fr auto auto;gap:20px;align-items:center;font-size:12px}.back-to-top{border:0;background:transparent;color:#fff;cursor:pointer}.maintenance{min-height:100vh;display:grid;place-items:center;background:var(--soft);padding:20px}.maintenance-panel{max-width:680px;background:#fff;border:1px solid var(--border);padding:50px;border-radius:20px;text-align:center;box-shadow:var(--shadow)}.maintenance-panel h1{color:var(--title);font-size:40px;margin:16px 0}.maintenance-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:26px}
@media(max-width:1100px){.desktop-nav{display:none}.mobile-menu-toggle{display:inline-flex;align-items:center}.header-inner{gap:14px}.header-actions{margin-left:auto}.hero-grid{grid-template-columns:1fr 1fr}.mosaic{grid-template-columns:1fr 1fr}.mosaic .wide{grid-column:span 2}.mosaic .tall{grid-row:auto}.footer-inner{grid-template-columns:1.5fr 1fr 1fr}.footer-inner>div:last-child{grid-column:2/4}.footer-bottom{grid-template-columns:1fr auto}.footer-bottom span:nth-child(2){grid-column:1/3}.footer-bottom a,.footer-bottom button{justify-self:end}}
@media(max-width:820px){.security-strip{text-align:left;padding:9px 16px}.header-inner{height:66px;padding:0 16px}.brand img{width:128px}.download-btn.compact{display:none}.hero{padding:52px 0;background:linear-gradient(180deg,#fff 0,#fff 52%,#f1f7fc 52%,#eef6fc 100%)}.hero-grid{grid-template-columns:1fr}.product-stage{min-height:400px}.product-stage img{max-height:380px}.section{padding:60px 0}.section-head{display:block}.task-strip{grid-template-columns:1fr 1fr}.task-item{border-bottom:1px solid var(--border)}.task-item:nth-child(even){border-right:0}.task-item:last-child{grid-column:1/3}.mosaic{grid-template-columns:1fr}.mosaic .wide{grid-column:auto;display:block}.network-explorer{grid-template-columns:1fr}.network-tabs{flex-direction:row;overflow-x:auto;scrollbar-width:none}.network-tab{min-width:max-content;border-left:0;border-bottom:3px solid transparent}.network-tab[aria-selected="true"]{border-left:0;border-bottom-color:var(--blue)}.network-panel{grid-template-columns:1fr}.network-panel img{max-height:210px;order:-1}.journey:before{left:24px}.step,.step:nth-child(even){grid-template-columns:48px 1fr;gap:14px}.step .step-no,.step:nth-child(even) .step-no{grid-column:1;grid-row:1;justify-self:start}.step .step-content,.step:nth-child(even) .step-content{grid-column:2;grid-row:1}.process-layout,.security-layout,.editorial,.staking-split{grid-template-columns:1fr}.featured-article{border-right:0;border-bottom:1px solid var(--border);padding:0 0 26px}.article-layout{grid-template-columns:1fr;padding-top:28px}.toc{display:none}.mobile-toc{display:block}.support-grid{grid-template-columns:1fr}.glossary-list{grid-template-columns:1fr}.update-row{grid-template-columns:100px 1fr}.update-row a{display:none}.download-cta{display:block;padding:32px}.download-cta .download-btn{margin-top:20px}.footer-inner{grid-template-columns:1fr 1fr}.footer-brand-col{grid-column:1/3}.footer-inner>div:last-child{grid-column:auto}.footer-bottom{grid-template-columns:1fr}.footer-bottom span:nth-child(2){grid-column:auto}.footer-bottom a,.footer-bottom button{justify-self:start}}
@media(max-width:520px){.container{width:min(100% - 28px,var(--max))}.lang-switch{min-width:auto}.mobile-menu-toggle span{display:none}.mobile-menu-foot{grid-template-columns:1fr 1fr}.mobile-menu-foot .download-btn{grid-column:1/3;justify-self:stretch}.mobile-links{grid-template-columns:1fr}.hero h1{font-size:39px}.hero-subtitle{font-size:17px}.hero-actions{align-items:stretch}.hero-actions .download-btn{width:100%}.product-stage{min-height:330px}.product-stage img{max-height:315px}.task-strip{grid-template-columns:1fr}.task-item,.task-item:nth-child(even){border-right:0}.task-item:last-child{grid-column:auto}.mosaic article{padding:22px}.section-head h2{font-size:31px}.network-stage{padding:24px 18px}.article-body h2{font-size:26px}.page-hero h1{font-size:40px}.service-links{grid-template-columns:1fr}.footer-inner{grid-template-columns:1fr}.footer-brand-col{grid-column:auto}.footer-inner>div:last-child{grid-column:auto}.maintenance-panel{padding:30px 22px}.maintenance-panel h1{font-size:32px}}
.editorial-news{display:grid;grid-template-columns:minmax(0,.78fr) minmax(0,1.22fr);gap:54px;align-items:start}.news-intro{position:sticky;top:108px}.news-intro h2{font-size:34px;line-height:1.2;color:var(--title);margin:10px 0 18px}.detailed-updates .update-row{grid-template-columns:112px minmax(0,1fr) 86px}.detailed-updates .update-row h2{font-size:21px;line-height:1.35;color:var(--title);margin:0 0 10px}.detailed-updates .update-row p{margin:0 0 10px}.detailed-updates .update-row>a{align-self:start;white-space:nowrap}@media(max-width:820px){.editorial-news{grid-template-columns:1fr}.news-intro{position:static}.detailed-updates .update-row{grid-template-columns:86px minmax(0,1fr)}.detailed-updates .update-row>a{display:none}}

/* Mobile header fix: keep language, download and hamburger visible */
.download-label-mobile{display:none}

@media(max-width:1100px){
  .mobile-menu-toggle i,
  .mobile-menu-toggle i::before,
  .mobile-menu-toggle i::after{
    display:block;
    width:26px;
    height:2px;
    background:var(--title);
    border-radius:2px;
  }
  .mobile-menu-toggle i{position:relative;margin-left:8px;flex:0 0 auto}
  .mobile-menu-toggle i::before,
  .mobile-menu-toggle i::after{content:"";position:absolute;left:0}
  .mobile-menu-toggle i::before{top:-8px}
  .mobile-menu-toggle i::after{top:8px}
}

@media(max-width:820px){
  .header-inner{height:66px;padding:0 14px;gap:10px}
  .header-actions{margin-left:auto;gap:8px;flex:0 0 auto}
  .lang-switch{min-width:32px;font-size:14px;white-space:nowrap}
  .download-btn.compact{
    display:inline-flex;
    min-height:44px;
    padding:0 13px;
    font-size:14px;
    white-space:nowrap;
    border-radius:12px;
  }
  .mobile-menu-toggle{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:44px;
    height:44px;
    min-height:44px;
    padding:0;
    border:0;
    background:transparent;
    border-radius:0;
    flex:0 0 44px;
    cursor:pointer;
    touch-action:manipulation;
  }
  .mobile-menu-toggle span{display:none}
  .mobile-menu-toggle i{margin-left:0;width:28px}
  .mobile-menu-toggle i::before,
  .mobile-menu-toggle i::after{width:28px}
  .mobile-menu-toggle:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
}

@media(max-width:520px){
  .header-inner{padding:0 12px;gap:8px}
  .brand img{width:112px;height:auto}
  .header-actions{gap:6px}
  .lang-switch{min-width:28px;font-size:14px}
  .download-btn.compact{min-height:44px;padding:0 11px;font-size:14px}
  .download-label-desktop{display:none}
  .download-label-mobile{display:inline}
  .mobile-menu-toggle{width:40px;flex-basis:40px}
  .mobile-menu-toggle i,
  .mobile-menu-toggle i::before,
  .mobile-menu-toggle i::after{width:27px}
}

@media(max-width:370px){
  .header-inner{padding-left:10px;padding-right:10px;gap:6px}
  .brand img{width:104px}
  .header-actions{gap:5px}
  .download-btn.compact{padding:0 9px;font-size:13px}
  .mobile-menu-toggle{width:38px;flex-basis:38px}
  .mobile-menu-toggle i,
  .mobile-menu-toggle i::before,
  .mobile-menu-toggle i::after{width:25px}
}