: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}*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;font-family:Arial,"Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);line-height:1.72}a{color:var(--blue2);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto}.skip{position:absolute;left:-9999px}.skip:focus{left:10px;top:10px;z-index:9999;background:#fff;padding:10px}.safety-bar{background:var(--soft2);border-bottom:1px solid var(--border);font-size:13px;text-align:center;padding:8px 16px;color:var(--deep)}.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);border-bottom:1px solid var(--border);backdrop-filter:blur(10px)}.header-inner{max-width:var(--max);margin:auto;height:72px;display:flex;align-items:center;gap:24px;padding:0 20px}.brand{display:flex;align-items:center;min-width:150px}.brand img{height:34px;width:auto}.desktop-nav{display:flex;gap:4px;flex:1;justify-content:center}.nav-group{position:relative}.nav-trigger{height:44px;border:0;background:transparent;color:var(--title);padding:0 12px;font-weight:700;cursor:pointer}.nav-trigger:focus-visible,.mobile-open:focus-visible,.mobile-close:focus-visible{outline:3px solid #9bc8fa;outline-offset:2px}.mega{position:absolute;top:52px;left:50%;transform:translateX(-50%);width:min(860px,92vw);background:#fff;border:1px solid var(--border);box-shadow:0 16px 40px rgba(30,61,90,.12);padding:24px;display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:26px}.mega[hidden]{display:none}.mega h3{margin:4px 0 8px;color:var(--title)}.eyebrow{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--blue2)}.mega-links,.mega-feature{display:flex;flex-direction:column;gap:8px}.mega-feature{background:var(--soft);padding:16px}.header-actions{display:flex;align-items:center;gap:10px;white-space:nowrap}.language{font-weight:700}.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;background:var(--blue2);color:#fff;border-radius:8px;font-weight:700}.download-btn:hover{text-decoration:none;background:var(--deep)}.mobile-open,.mobile-close{display:none;border:0;background:transparent;font-size:16px;min-height:44px;cursor:pointer}.mobile-menu{position:fixed;inset:0;background:#fff;z-index:1000;overflow:auto}.mobile-menu[hidden]{display:none}.mobile-top,.mobile-bottom{padding:18px 20px;display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--border)}.mobile-top .brand{flex:1}.mobile-body{padding:10px 20px}.mobile-body details{border-bottom:1px solid var(--border)}.mobile-body summary{min-height:52px;display:flex;align-items:center;font-weight:700;cursor:pointer}.mobile-body details div{display:flex;flex-direction:column;padding:0 0 14px 12px}.mobile-body a{min-height:44px;display:flex;align-items:center}.mobile-bottom{border-top:1px solid var(--border);flex-wrap:wrap}.container{max-width:var(--max);margin:auto;padding:0 20px}.hero{background:linear-gradient(110deg,#fff 0,#fff 58%,#edf4fb 58%,#f5f8fc 100%);padding:72px 0 54px}.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;align-items:center;gap:48px}.hero h1{font-size:clamp(38px,5vw,66px);line-height:1.1;margin:12px 0;color:var(--title);letter-spacing:-.03em}.hero-sub{font-size:20px;color:var(--blue2);font-weight:700}.hero p{font-size:18px;max-width:720px}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:24px 0}.text-link{min-height:44px;display:inline-flex;align-items:center;font-weight:700}.cap-tags{display:flex;gap:8px;flex-wrap:wrap}.cap-tags span{background:var(--tag);padding:6px 10px;border-radius:6px;font-size:13px;color:var(--blue2)}.hero-visual{position:relative;min-height:440px;display:flex;align-items:center;justify-content:center}.hero-visual:before,.hero-visual:after{content:"";position:absolute;border:1px solid #c9deef}.hero-visual:before{width:360px;height:360px;transform:rotate(8deg)}.hero-visual:after{width:290px;height:290px;transform:rotate(-10deg)}.hero-visual img{position:relative;z-index:2;max-height:430px;object-fit:contain}.section{padding:72px 0}.section.soft{background:var(--soft)}.section.deep{background:var(--deep);color:#dfeefe}.section.deep h2,.section.deep h3{color:#fff}.section-kicker{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--blue2);font-weight:700}.section h2,.page-head h1,.article-section h2{color:var(--title)}.section h2{font-size:34px;margin:6px 0 14px}.task-strip{display:grid;grid-template-columns:1.2fr 1fr 1.1fr .9fr 1.2fr;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.task{padding:24px 20px;border-right:1px solid var(--border)}.task:last-child{border-right:0}.task strong{display:block;color:var(--title);font-size:18px}.task small{color:var(--blue2);font-weight:700}.mosaic{display:grid;grid-template-columns:1.2fr .8fr 1fr;grid-template-areas:"a a b" "c d b" "c e e";gap:18px}.mosaic article{border:1px solid var(--border);padding:26px;min-height:180px;background:#fff}.mosaic article:nth-child(1){grid-area:a;background:var(--soft2)}.mosaic article:nth-child(2){grid-area:b}.mosaic article:nth-child(3){grid-area:c}.mosaic article:nth-child(4){grid-area:d;background:var(--soft)}.mosaic article:nth-child(5){grid-area:e}.mosaic img{max-height:190px;object-fit:contain}.network-stage{display:grid;grid-template-columns:260px 1fr;gap:30px}.network-tabs{display:flex;flex-direction:column;gap:6px}.network-tabs button{padding:14px 16px;border:1px solid var(--border);background:#fff;text-align:left;cursor:pointer;color:var(--title);font-weight:700}.network-tabs button[aria-selected="true"]{background:var(--deep);color:#fff}.network-panel{display:none;padding:28px;background:#fff;border:1px solid var(--border)}.network-panel.active{display:grid;grid-template-columns:1fr 240px;gap:20px;align-items:center}.no-js .network-panel{display:block}.steps{position:relative}.step{display:grid;grid-template-columns:120px 1fr;gap:20px;padding:20px 0;border-top:1px solid var(--border)}.step-num{font-size:36px;color:var(--blue);font-weight:700}.web3-flow{display:grid;grid-template-columns:.8fr 1.2fr;gap:50px}.flow-list{counter-reset:flow}.flow-list div{counter-increment:flow;padding:16px 0;border-bottom:1px solid var(--border)}.flow-list div:before{content:counter(flow,decimal-leading-zero);display:inline-block;width:52px;color:var(--blue2);font-weight:700}.security-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:center}.checklist{list-style:none;padding:0}.checklist li{padding:12px 0 12px 28px;position:relative;border-bottom:1px solid rgba(255,255,255,.18)}.checklist li:before{content:"✓";position:absolute;left:0}.academy-grid,.eth-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:38px}.article-list a{display:block;padding:14px 0;border-bottom:1px solid var(--border)}.updates{border-top:1px solid var(--border)}.update-row{display:grid;grid-template-columns:150px 1fr;gap:20px;padding:18px 0;border-bottom:1px solid var(--border)}.faq-list details{border-bottom:1px solid var(--border);padding:6px 0}.faq-list summary{cursor:pointer;min-height:54px;display:flex;align-items:center;color:var(--title);font-weight:700}.cta{padding:46px;background:var(--soft2);display:flex;align-items:center;justify-content:space-between;gap:30px}.page-head{padding:58px 0 34px;background:var(--soft)}.breadcrumbs{font-size:14px;color:var(--muted)}.page-head h1{font-size:46px;margin:12px 0 10px}.page-head p{font-size:19px;max-width:800px}.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:50px;padding:52px 20px 80px;max-width:var(--max);margin:auto}.article-main{min-width:0}.article-section{padding:8px 0 26px}.article-section h2{scroll-margin-top:100px;font-size:28px}.article-section p{font-size:17px}.inline-note{background:var(--soft2);border-left:4px solid var(--blue);padding:14px 16px;margin:22px 0}.toc{position:sticky;top:100px;align-self:start;border-left:2px solid var(--border);padding-left:18px}.toc ol{padding-left:18px}.toc a{color:var(--muted)}.site-footer{background:var(--footer);color:#c9daea;padding:48px 0 20px}.footer-grid{max-width:var(--max);margin:auto;padding:0 20px;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}.footer-grid h3{color:#fff}.footer-grid a{display:block;color:#dfeefe;padding:4px 0}.footer-logo{height:34px}.footer-note{font-size:14px}.footer-bottom{max-width:var(--max);margin:30px auto 0;padding:20px;border-top:1px solid rgba(255,255,255,.15);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:13px}.footer-bottom a{color:#fff}
@media(max-width:1050px){.desktop-nav{display:none}.mobile-open,.mobile-close{display:inline-flex;align-items:center}.header-inner{height:64px}.header-actions{margin-left:auto}.hero-grid,.security-grid,.academy-grid,.eth-grid,.web3-flow{grid-template-columns:1fr}.hero{background:#fff}.hero-visual{min-height:340px}.mosaic{grid-template-columns:1fr 1fr;grid-template-areas:"a a" "b c" "d e"}.network-stage{grid-template-columns:1fr}.network-tabs{flex-direction:row;overflow-x:auto}.network-tabs button{min-width:160px}.article-wrap{grid-template-columns:1fr}.toc{position:relative;top:auto;order:-1;border-left:0;background:var(--soft);padding:16px}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:700px){.safety-bar{text-align:left}.brand{min-width:120px}.brand img{height:30px}.header-actions .download-btn{padding:0 12px}.hero{padding:46px 0 30px}.hero-grid{gap:20px}.hero h1{font-size:40px}.hero p{font-size:16px}.hero-visual{min-height:280px}.hero-visual img{max-height:280px}.task-strip{grid-template-columns:1fr}.task{border-right:0;border-bottom:1px solid var(--border)}.mosaic{display:block}.mosaic article{margin-bottom:14px}.section{padding:48px 0}.section h2{font-size:29px}.network-panel.active{grid-template-columns:1fr}.step{grid-template-columns:72px 1fr}.update-row{grid-template-columns:1fr;gap:4px}.cta{padding:28px;display:block}.page-head h1{font-size:36px}.article-wrap{padding-top:30px}.footer-grid{grid-template-columns:1fr}.language{min-height:44px;display:flex;align-items:center}.mobile-open{padding:0 4px}}