:root{--bg:#fff;--soft:#f5f8fc;--soft2:#edf4fb;--blue:#3f8fe5;--blue2:#245f9e;--deep:#153f66;--title:#16283c;--text:#43566a;--muted:#718296;--border:#dce7f2;--footer:#123958;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--text);line-height:1.72;overflow-x:hidden;background:#fff}img{max-width:100%;height:auto;display:block}a{text-decoration:none;color:inherit}button{font:inherit}.skip{position:fixed;left:12px;top:-60px;background:#fff;border:1px solid var(--border);padding:9px 12px;z-index:3000}.skip:focus{top:12px}.safety{padding:8px 18px;text-align:center;background:var(--soft2);color:var(--deep);font-size:13px;border-bottom:1px solid var(--border)}.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-bottom:1px solid rgba(220,231,242,.9)}.head-inner{height:72px;max-width:var(--max);margin:auto;padding:0 20px;display:flex;align-items:center;gap:22px}.brand img{width:138px;height:36px;object-fit:contain}.desktop-nav{height:100%;display:flex;align-items:stretch;gap:1px;flex:1}.nav-group{display:flex;align-items:center}.nav-trigger{height:100%;border:0;background:transparent;color:var(--title);padding:0 9px;cursor:pointer;white-space:nowrap}.nav-trigger span{color:var(--muted)}.mega{position:fixed;top:var(--mega-top,104px);left:50%;transform:translateX(-50%) translateY(-5px);width:min(1080px,calc(100vw - 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var(--max))/2 + 20px))}.related h2{font-size:34px;color:var(--title);margin:0 0 18px}.related>div{display:flex;gap:24px;flex-wrap:wrap}.related a{color:var(--blue2);font-weight:850}.faq-page{max-width:980px;margin:auto;padding:10px 20px 72px}.faq-intro{padding:24px 0}.faq-intro h2{font-size:34px;color:var(--title);margin:0}.footer{background:var(--footer);color:#cfe0ef;padding:52px max(20px,calc((100vw - var(--max))/2 + 20px)) 22px}.footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr 1fr;gap:36px}.footer img{width:145px;filter:brightness(0) invert(1)}.footer h2{font-size:15px;color:#fff}.footer a{display:block;margin:7px 0;color:#d9e8f4}.footer-about strong{color:#fff}.footer-bottom{display:flex;gap:20px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.14);padding-top:18px;margin-top:36px;font-size:13px}.footer-bottom span:nth-child(2){flex:1}.footer-bottom a{color:#fff;font-weight:750}.nav-trigger:focus-visible,.btn:focus-visible,.lang:focus-visible,.menu-btn:focus-visible,.close-menu:focus-visible,.m-trigger:focus-visible,.tabs button:focus-visible,summary:focus-visible,a:focus-visible{outline:3px solid rgba(63,143,229,.35);outline-offset:2px}@media(max-width:1080px){.desktop-nav{display:none}.menu-btn{display:block}.mosaic{grid-template-columns:1fr 1fr}.mosaic .wide{grid-column:span 2}.mosaic .tall{grid-row:auto}.security-card{grid-column:span 2}.network-explorer{grid-template-columns:1fr}.tabs{flex-direction:row;overflow-x:auto;border-left:0;border-bottom:1px solid var(--border)}.tabs button{white-space:nowrap;border-left:0;border-bottom:3px solid transparent}.tabs button[aria-selected=true]{border-bottom-color:var(--blue)}.article-layout{grid-template-columns:220px 1fr}.footer-grid{grid-template-columns:1.4fr 1fr 1fr}.footer-grid>div:last-child{grid-column:2/4}}@media(max-width:820px){.safety{text-align:left}.head-inner{height:64px;padding:0 14px}.brand img{width:122px}.hero{grid-template-columns:1fr;padding-top:48px}.product-stage{min-height:370px}.product-stage img{max-height:350px}.task>div{grid-template-columns:1fr}.mosaic{grid-template-columns:1fr}.mosaic .wide,.security-card{grid-column:auto}.mosaic .wide{grid-template-columns:1fr}.tab-stage article{grid-template-columns:1fr;gap:18px}.journey-line{grid-template-columns:1fr}.journey-line:before{left:22px}.journey-line li:nth-child(even){transform:none}.web3-flow,.security-zone,.academy-home,.staking{grid-template-columns:1fr}.inner-hero{grid-template-columns:1fr}.hero-mark{height:170px}.article-layout{grid-template-columns:1fr}.toc{position:static}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:last-child{grid-column:auto}.footer-about{grid-column:1/3}.cta{margin-left:20px;margin-right:20px}.update-list a{grid-template-columns:100px 1fr 24px}}@media(max-width:560px){.head-actions{gap:3px}.btn.small{font-size:13px;padding:7px 10px}.hero{padding:40px 16px 52px}.hero h1{font-size:42px}.hero-actions{flex-direction:column;align-items:stretch}.section,.journey{padding:56px 16px}.task{grid-template-columns:44px 1fr}.cap{padding:56px 16px}.mosaic article{padding:21px}.app-card{padding:0!important}.network-explorer{padding:56px 16px}.tab-stage h2{font-size:30px}.web3-flow{padding:56px 16px}.security-zone{padding:58px 16px}.academy-home,.staking{padding:56px 16px}.cta{display:block;padding:28px 22px}.cta .btn{margin-top:20px;width:100%}.inner-hero{padding:42px 16px}.inner-hero h1{font-size:40px}.article-layout{padding:8px 16px 56px}.article-section h2{font-size:28px}.article-section p{font-size:16px}.check{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-about{grid-column:auto}.footer{padding-left:16px;padding-right:16px}.footer-bottom{display:grid}.m-panel.open{grid-template-columns:1fr}.update-list a{grid-template-columns:1fr 22px}.update-list a span{grid-column:1/3}.brand img{width:108px}}

/* Accessible FAQ accordion: content remains visible without JavaScript. */
.faq-item h3{margin:0}.faq-question{width:100%;min-height:58px;border:0;background:transparent;display:flex;align-items:center;justify-content:space-between;text-align:left;font-weight:850;color:var(--title);padding:10px 0;cursor:pointer}.faq-question span{font-size:22px;color:var(--blue2);margin-left:20px}.faq-answer{padding:0 42px 17px 0}.faq-answer p{margin:0}.faq-question:focus-visible{outline:3px solid rgba(63,143,229,.35);outline-offset:2px}

/* Content-depth refinements */
.hero-asset{min-height:260px;background:var(--soft2);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;padding:24px;overflow:hidden}.hero-asset img{max-height:230px;max-width:100%;object-fit:contain}.checklist{margin:18px 0 0;padding:18px 18px 18px 38px;background:var(--soft);border:1px solid var(--border)}.checklist li{margin:8px 0}.faq-group{scroll-margin-top:110px}.page-kind-security .inner-hero,.page-kind-staking .inner-hero{background:linear-gradient(180deg,var(--soft),#fff 72%)}
@media(min-width:1081px){.nav-group:hover .mega,.nav-group:focus-within .mega{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0)}}
@media(max-width:820px){.hero-asset{min-height:180px}.hero-asset img{max-height:160px}.toc details{padding:14px}}

/* Interaction and viewport refinements */
a,button,[role="button"],[role="tab"]{touch-action:manipulation}
@media(max-width:1024px){.page-shell,.section,.hero,.inner-hero{max-width:100%}}
@media(max-width:768px){.article-layout,.knowledge-layout{min-width:0}.btn,.download-btn{min-height:44px}}
@media(max-width:430px){.head-inner{padding-left:14px;padding-right:14px}}
@media(max-width:390px){.hero,.inner-hero,.section{padding-left:16px;padding-right:16px}}
@media(max-width:375px){.brand img{max-width:120px}}
@media(max-width:360px){.hero-actions{gap:8px}.btn,.download-btn{padding-left:14px;padding-right:14px}}