:root{--bg:#fff;--soft:#f5f8fc;--soft2:#edf4fb;--blue:#3f8fe5;--deep:#245f9e;--navy:#153f66;--title:#16283c;--text:#43566a;--muted:#718296;--line:#dce7f2;--tag:#eaf4ff;--footer:#123958;--max:1220px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,"Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);line-height:1.7;overflow-x:hidden}a{color:var(--deep);text-decoration:none}a:hover{text-decoration:underline}img,svg{max-width:100%;height:auto}.safety-strip{background:var(--soft2);color:#284b6c;padding:9px 18px;text-align:center;font-size:14px;border-bottom:1px solid var(--line)}.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.header-inner{max-width:var(--max);margin:auto;display:flex;align-items:center;gap:22px;padding:11px 20px}.brand{display:flex;align-items:center;flex:0 0 auto}.brand img{width:132px;height:34px;object-fit:contain}.desktop-nav{display:flex;align-items:center;gap:2px;flex:1;justify-content:center}.nav-group{position:relative}.nav-trigger{border:0;background:transparent;padding:14px 10px;font:inherit;color:var(--title);cursor:pointer}.nav-trigger:focus-visible,.download-btn:focus-visible,.lang-link:focus-visible,.mobile-menu-btn:focus-visible,a:focus-visible{outline:3px solid rgba(63,143,229,.35);outline-offset:2px}.mega-menu{position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%);width:min(760px,92vw);padding:24px;display:none;grid-template-columns:1.1fr 1fr 1fr;gap:24px;background:#fff;border:1px solid var(--line);box-shadow:0 16px 40px rgba(21,63,102,.12);border-radius:14px}.nav-group.open .mega-menu{display:grid}.mega-intro strong{font-size:20px;color:var(--title)}.mega-intro p{font-size:14px}.mega-links,.mega-feature{display:flex;flex-direction:column;gap:10px}.mega-feature{border-left:1px solid var(--line);padding-left:20px}.mega-feature 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.brand{margin-right:auto}.mobile-menu-close{font-size:30px;border:0;background:transparent;min-width:44px;min-height:44px}.mobile-menu-body{padding:14px 18px}.mobile-menu-body details{border-bottom:1px solid var(--line)}.mobile-menu-body summary{min-height:48px;display:flex;align-items:center;font-weight:700;color:var(--title);cursor:pointer}.mobile-menu-body details div{display:grid;gap:6px;padding:0 0 14px 14px}.mobile-menu-body a{min-height:44px;display:flex;align-items:center}.mobile-menu-foot{padding:18px;display:grid;gap:10px}.container{max-width:var(--max);margin:auto;padding:0 22px}.section{padding:76px 0}.section.soft{background:var(--soft)}.section.soft2{background:var(--soft2)}.eyebrow{font-size:13px;text-transform:uppercase;letter-spacing:.12em;color:var(--deep);font-weight:700}.hero{padding:72px 0 82px;background:linear-gradient(180deg,#fff 0,#f7fbff 100%)}.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:54px;align-items:center}.hero h1{font-size:clamp(38px,5vw,68px);line-height:1.08;margin:12px 0 18px;color:var(--title);letter-spacing:-.03em}.hero .lead{font-size:19px;max-width:700px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0}.text-link{min-height:44px;display:inline-flex;align-items:center;padding:0 4px}.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:24px}.tag{background:var(--tag);padding:6px 10px;border-radius:7px;font-size:13px;color:#2a5f91}.product-stage{background:var(--soft2);border:1px solid var(--line);border-radius:24px;padding:28px;position:relative;overflow:hidden}.product-stage:before,.product-stage:after{content:"";position:absolute;border:1px solid rgba(63,143,229,.25);width:180px;height:180px;transform:rotate(24deg);right:-70px;top:-70px}.product-stage:after{width:120px;height:120px;left:-50px;bottom:-50px;top:auto}.product-stage img{position:relative;z-index:1;width:100%;max-height:520px;object-fit:contain}.task-row{display:grid;grid-template-columns:1.25fr 1fr 1.35fr 1fr 1.25fr;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.task-item{padding:25px 22px;border-right:1px solid var(--line)}.task-item:last-child{border-right:0}.task-no{font-size:12px;color:var(--muted)}.task-item h3{color:var(--title);margin:8px 0}.mosaic{display:grid;grid-template-columns:1.15fr .85fr 1fr;grid-auto-rows:minmax(220px,auto);gap:18px}.mosaic article{border:1px solid var(--line);border-radius:16px;padding:28px;background:#fff}.mosaic article:nth-child(1){grid-row:span 2;background:var(--soft2)}.mosaic article:nth-child(3){grid-column:span 2}.mosaic h3{font-size:24px;color:var(--title);margin-top:0}.mosaic img{max-height:240px;display:block;margin:18px auto 0}.network-explorer{display:grid;grid-template-columns:280px 1fr;gap:32px}.network-tabs{display:flex;flex-direction:column;gap:8px}.network-tab{border:1px solid var(--line);background:#fff;text-align:left;padding:14px 16px;border-radius:8px;min-height:48px;color:var(--title);cursor:pointer}.network-tab[aria-selected="true"]{background:var(--navy);color:#fff}.network-panel{display:grid;grid-template-columns:1fr .8fr;gap:28px;align-items:center}.network-panel[hidden]{display:none}.network-panel img{max-height:340px;margin:auto}.steps{position:relative;display:grid;grid-template-columns:repeat(6,1fr);gap:18px}.step{padding-top:25px;border-top:2px solid var(--line)}.step:nth-child(even){margin-top:60px}.step strong{font-size:24px;color:var(--blue)}.web3-flow{display:grid;grid-template-columns:.75fr 1.25fr;gap:54px;align-items:start}.flow-list{border-left:2px solid var(--line);padding-left:26px}.flow-list div{padding:0 0 22px;position:relative}.flow-list div:before{content:"";position:absolute;width:10px;height:10px;border-radius:50%;background:var(--blue);left:-32px;top:9px}.security-band{background:var(--navy);color:#dbeaff}.security-band h2,.security-band h3{color:#fff}.security-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}.security-checks{display:grid;gap:10px}.security-checks div{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.16)}.editorial{display:grid;grid-template-columns:1.3fr .7fr;gap:52px}.editorial-main{padding-right:34px;border-right:1px solid var(--line)}.article-list{display:grid;gap:22px}.article-list article{padding-bottom:18px;border-bottom:1px solid var(--line)}.article-list small{color:var(--muted)}.article-list h3{margin:5px 0;color:var(--title)}.pos-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}.pos-grid article{padding:32px;border-top:3px solid var(--deep);background:var(--soft)}.updates{display:grid}.update{display:grid;grid-template-columns:150px 1fr;gap:26px;padding:20px 0;border-top:1px solid var(--line)}.faq-list details{border-bottom:1px solid var(--line);padding:0}.faq-list 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0;font-size:14px}.notice{border-left:4px solid var(--blue);background:var(--soft2);padding:18px 20px;margin:26px 0}.dark-notice{background:var(--navy);color:#e6f2ff;padding:22px;border-radius:12px}.checklist{display:grid;gap:10px}.checklist li{background:var(--soft);padding:12px 14px;border-radius:8px}.process{counter-reset:item;display:grid;gap:16px}.process article{display:grid;grid-template-columns:56px 1fr;gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}.process article:before{counter-increment:item;content:counter(item,decimal-leading-zero);font-size:24px;color:var(--blue);font-weight:700}.product-page-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:42px;align-items:center}.product-page-grid img{max-height:420px;object-fit:contain;margin:auto}.service-panels{display:grid;grid-template-columns:1fr 1fr;gap:22px}.service-panels section{padding:26px;background:var(--soft);border-top:3px solid 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@media(max-width:1100px){.desktop-nav{display:none}.mobile-menu-btn{display:inline-block}.header-inner{gap:12px}.brand img{width:118px}.hero-grid,.security-grid,.editorial,.web3-flow,.product-page-grid{grid-template-columns:1fr}.task-row{grid-template-columns:1fr 1fr}.task-item{border-bottom:1px solid var(--line)}.mosaic{grid-template-columns:1fr 1fr}.mosaic article:nth-child(1){grid-row:auto}.mosaic article:nth-child(3){grid-column:span 1}.network-explorer{grid-template-columns:1fr}.network-tabs{flex-direction:row;overflow:auto;padding-bottom:6px}.network-tab{min-width:max-content}.steps{grid-template-columns:repeat(3,1fr)}.step:nth-child(even){margin-top:0}.content-with-toc{grid-template-columns:1fr}.toc{position:static;order:-1;border-left:0;border:1px solid var(--line);padding:16px;border-radius:10px}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:700px){.header-inner{padding:9px 14px}.safety-strip{text-align:left;padding:8px 14px}.header-actions .download-btn{padding:0 12px;font-size:13px}.hero{padding:48px 0}.hero-grid{gap:28px}.hero h1{font-size:40px}.product-stage{padding:18px}.section{padding:54px 0}.container{padding:0 16px}.task-row{grid-template-columns:1fr}.task-item{border-right:0}.mosaic{grid-template-columns:1fr}.network-panel{grid-template-columns:1fr}.steps{grid-template-columns:1fr}.step{padding:16px 0 0 18px;border-top:0;border-left:2px solid var(--line)}.pos-grid,.service-panels{grid-template-columns:1fr}.update{grid-template-columns:1fr;gap:4px}.cta{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column}.page-hero{padding:42px 0 30px}.prose h2{font-size:26px}}