:root{--bg:#fff;--soft:#f5f8fc;--soft2:#edf4fb;--blue:#3f8fe5;--deep:#245f9e;--navy:#153f66;--title:#16283c;--text:#43566a;--muted:#718296;--line:#dce7f2;--tag:#eaf4ff;--max:1220px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,"Microsoft YaHei",sans-serif;color:var(--text);background:#fff;line-height:1.72;overflow-x:hidden}a{color:var(--deep);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto}button,a{touch-action:manipulation}.safety-strip{background:#edf4fb;color:#36546f;font-size:14px;padding:9px 20px;text-align:center}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.header-inner{max-width:var(--max);margin:auto;height:76px;display:flex;align-items:center;gap:22px;padding:0 22px}.brand img{width:150px;display:block}.desktop-nav{display:flex;gap:4px;flex:1;justify-content:center}.nav-group{position:relative}.nav-trigger{height:44px;border:0;background:transparent;padding:0 12px;color:var(--title);font-weight:700;cursor:pointer}.nav-trigger:focus-visible,.menu-btn:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid rgba(63,143,229,.35);outline-offset:2px}.nav-trigger.active{color:var(--deep)}.mega{position:absolute;top:52px;left:50%;transform:translateX(-50%) translateY(8px);width:min(930px,calc(100vw - 40px));display:grid;grid-template-columns:1.05fr 1.1fr .9fr;gap:30px;background:#fff;border:1px solid var(--line);box-shadow:0 18px 45px rgba(21,63,102,.12);padding:30px;opacity:0;visibility:hidden;pointer-events:none;transition:.16s}.nav-group.open .mega,.nav-group:hover .mega,.nav-group:focus-within .mega{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0)}.mega strong{font-size:22px;color:var(--title)}.mega p{margin:10px 0;color:var(--muted)}.mega-links{display:grid;grid-template-columns:1fr 1fr;gap:8px 18px}.mega-links a,.mega-feature a{padding:7px 0;border-bottom:1px solid #eef3f8}.mega-feature{background:var(--soft);padding:18px;border-radius:14px;display:flex;flex-direction:column;gap:8px}.mega-feature span{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.header-actions{display:flex;align-items:center;gap:9px;white-space:nowrap}.download-btn{display:inline-flex;min-height:44px;align-items:center;justify-content:center;background:var(--blue);color:white!important;padding:10px 20px;border-radius:10px;font-weight:700;text-decoration:none!important}.download-btn:hover{background:var(--deep)}.download-btn.small{min-height:40px;padding:8px 15px}.menu-btn{display:none;min-height:44px;border:1px solid var(--line);background:#fff;border-radius:9px;padding:0 14px}.mobile-menu{display:none;position:fixed;inset:0;background:#fff;z-index:100;overflow:auto}.mobile-menu.open{display:flex;flex-direction:column}.mobile-menu-head{height:72px;border-bottom:1px solid var(--line);padding:0 20px;display:flex;align-items:center;gap:16px}.mobile-menu-head img{width:145px;margin-right:auto}.mobile-close{font-size:32px;border:0;background:none;min-width:44px;height:44px}.mobile-menu-body{padding:18px 20px}.mobile-menu details{border-bottom:1px solid var(--line)}.mobile-menu summary{min-height:50px;display:flex;align-items:center;font-weight:700;color:var(--title);cursor:pointer}.mobile-menu details div{display:grid;padding:0 0 14px 14px}.mobile-menu details a{min-height:44px;display:flex;align-items:center}.mobile-menu-foot{margin-top:auto;padding:20px;display:grid;gap:12px;background:var(--soft)}
.container{max-width:var(--max);margin:auto;padding:0 24px}.section{padding:78px 0}.section.soft{background:var(--soft)}.section.soft2{background:var(--soft2)}.eyebrow{display:inline-block;color:var(--deep);background:var(--tag);padding:5px 10px;border-radius:7px;font-size:13px;font-weight:700;margin-bottom:16px}.hero{padding:68px 0 58px;overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:55px;align-items:center}.hero h1{font-size:clamp(40px,5vw,68px);line-height:1.08;letter-spacing:-.035em;color:var(--title);margin:0 0 20px}.hero .sub{font-size:21px;color:var(--deep);font-weight:700}.hero p{font-size:18px;max-width:760px}.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0}.text-link{display:inline-flex;align-items:center;min-height:44px;padding:0 6px;font-weight:700}.hero-tags{display:flex;flex-wrap:wrap;gap:9px}.hero-tags span{font-size:13px;padding:6px 10px;border:1px solid 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solid var(--blue);background:#fff}.updates{display:grid}.update{display:grid;grid-template-columns:150px 1fr;gap:25px;padding:20px 0;border-bottom:1px solid var(--line)}.update small{color:var(--muted)}.faq-list details{border-bottom:1px solid var(--line);padding:0}.faq-list summary{cursor:pointer;min-height:58px;display:flex;align-items:center;font-weight:700;color:var(--title)}.faq-list details p{padding:0 0 20px;margin:0;max-width:900px}.cta{display:grid;grid-template-columns:1fr auto;gap:25px;align-items:center;padding:40px;border:1px solid var(--line);border-radius:20px;background:var(--soft2)}
.article-hero{padding:60px 0 30px;background:var(--soft)}.breadcrumbs{font-size:13px;color:var(--muted);margin-bottom:16px}.article-hero h1{font-size:clamp(38px,5vw,58px);line-height:1.1;margin:0 0 18px;color:var(--title);max-width:900px}.article-hero .lead{font-size:19px;max-width:850px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:60px;align-items:start}.article-body{min-width:0}.article-body h2{color:var(--title);font-size:30px;margin-top:48px;scroll-margin-top:110px}.article-body h3{color:var(--deep);font-size:20px}.article-body p{font-size:17px}.toc{position:sticky;top:106px;border-left:1px solid var(--line);padding-left:20px}.toc strong{display:block;margin-bottom:10px;color:var(--title)}.toc a{display:block;padding:6px 0;font-size:14px;color:var(--muted)}.toc a.active{color:var(--deep);font-weight:700}.callout{margin:28px 0;padding:20px 24px;background:var(--soft2);border-left:4px solid var(--blue)}.checklist{list-style:none;padding:0;margin:20px 0}.checklist li{position:relative;padding:8px 0 8px 30px}.checklist li:before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:700}.related{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.related a{padding:8px 11px;border:1px solid var(--line);border-radius:8px}.layout-tutorial .article-body section:nth-of-type(even),.layout-security .article-body section:nth-of-type(odd){background:#fbfdff;padding:4px 24px 24px;margin-left:-24px;margin-right:-24px;border-radius:14px}.layout-product .article-hero{background:#fff}.layout-service .article-layout{grid-template-columns:1fr}.layout-service .toc{display:none}.wide-note{font-size:15px;color:var(--muted)}
.site-footer{background:#123958;color:#cfe0ef;padding:58px 0 20px}.footer-grid{max-width:var(--max);margin:auto;padding:0 24px;display:grid;grid-template-columns:1.4fr .8fr .8fr .8fr;gap:36px}.footer-logo{width:150px;filter:brightness(0) invert(1);opacity:.95}.site-footer h3{color:#fff;font-size:16px}.site-footer a{display:block;color:#dcecff;padding:4px 0}.footer-note{font-size:13px;color:#a9c6dc}.footer-bottom{max-width:var(--max);margin:35px auto 0;padding:22px 24px 0;border-top:1px solid rgba(255,255,255,.14);display:flex;justify-content:space-between;gap:20px;font-size:13px}.footer-bottom a{display:inline}
@media(max-width:1050px){.desktop-nav{display:none}.menu-btn{display:inline-block}.header-inner{height:68px}.hero-grid,.security-grid,.academy-grid,.web3-flow{grid-template-columns:1fr}.hero-grid{gap:30px}.product-stage{min-height:390px}.network-panel{grid-template-columns:1fr}.steps{grid-template-columns:repeat(3,1fr)}.steps:before{display:none}.step{padding-top:38px}.step .dot{top:0}.mosaic{grid-template-columns:1fr 1fr;grid-template-areas:"a a" "b c" "d d" "e e"}.article-layout{grid-template-columns:1fr}.toc{position:static;order:-1;border:1px solid var(--line);padding:16px;border-radius:12px}.footer-grid{grid-template-columns:1fr 1fr}.task-strip{grid-template-columns:1fr 1fr}.task+.task{border-left:0}.task:nth-child(even){border-left:1px solid var(--line)}.task:last-child{grid-column:1/-1;border-top:1px solid var(--line)}}
@media(max-width:700px){.safety-strip{text-align:left;padding:8px 16px;line-height:1.45}.header-inner{padding:0 14px;gap:10px}.brand img{width:126px}.header-actions{margin-left:auto}.lang-link{min-width:36px}.download-btn.small{display:none}.hero{padding:44px 0}.container{padding:0 18px}.hero h1{font-size:42px}.hero .sub{font-size:18px}.product-stage{min-height:330px;border-radius:24px}.product-stage img{max-height:330px}.task-strip{grid-template-columns:1fr}.task,.task:nth-child(even),.task:last-child{border-left:0;border-top:1px solid var(--line);grid-column:auto}.section{padding:56px 0}.section-head{display:block}.section-head p{margin-top:14px}.mosaic{display:block}.piece{margin-bottom:14px}.network-stage{display:block}.network-tabs{flex-direction:row;overflow-x:auto;padding-bottom:10px;margin-bottom:20px}.network-tabs button{flex:0 0 auto;white-space:nowrap}.steps{grid-template-columns:1fr}.step{padding:0 0 20px 48px;border-left:2px solid var(--line);margin-left:14px}.step .dot{top:0;left:-15px}.pos-grid{grid-template-columns:1fr}.update{grid-template-columns:1fr;gap:4px}.cta{grid-template-columns:1fr;padding:28px}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:grid}.article-hero{padding:42px 0 20px}.article-hero h1{font-size:38px}.article-body p{font-size:16px}.article-body h2{font-size:26px}.mobile-menu-head img{width:125px}.hero-actions{display:grid}.hero-actions .download-btn,.hero-actions .text-link{width:100%;justify-content:center}.academy-grid{gap:24px}.feature-article{border-right:0;border-bottom:1px solid var(--line);padding:0 0 25px}}