:root{--bg:#fff;--light:#f5f8fc;--light2:#edf4fb;--blue:#3f8fe5;--blue2:#245f9e;--deep:#153f66;--title:#16283c;--text:#43566a;--muted:#718296;--border:#dce7f2;--tag:#eaf4ff;--footer:#123958;--max:1200px}*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Arial,sans-serif;color:var(--text);background:#fff;line-height:1.68;overflow-x:hidden}a{color:var(--blue2);text-decoration:none}a:hover{text-decoration:underline}button,a{touch-action:manipulation}button:focus-visible,a:focus-visible{outline:3px solid #8fc5ff;outline-offset:3px}.skip-link{position:absolute;left:-999px;top:0}.skip-link:focus{left:12px;top:12px;z-index:10000;background:#fff;padding:10px 14px}.security-strip{background:var(--light2);color:#294e72;text-align:center;padding:8px 18px;font-size:13px;border-bottom:1px solid var(--border)}.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);border-bottom:1px solid rgba(220,231,242,.85);backdrop-filter:blur(12px)}.header-inner{max-width:var(--max);margin:auto;height:72px;display:flex;align-items:center;gap:24px;padding:0 24px}.brand,.mobile-logo{display:inline-flex;align-items:center}.brand img{width:138px;height:38px;object-fit:contain}.desktop-nav{display:flex;gap:4px;flex:1;justify-content:center}.nav-group{position:relative}.mega-trigger{height:44px;padding:0 10px;background:transparent;border:0;color:var(--title);font-weight:650;cursor:pointer;font-size:14px}.mega-trigger span{margin-left:5px;color:var(--muted)}.mega-menu{position:fixed;left:50%;transform:translateX(-50%) translateY(-8px);top:110px;width:min(1160px,calc(100vw - 48px));display:grid;grid-template-columns:1.15fr 1.2fr .9fr;gap:28px;padding:30px;background:#fff;border:1px solid var(--border);box-shadow:0 18px 50px rgba(21,63,102,.12);opacity:0;pointer-events:none;transition:.18s ease;z-index:1200}.nav-group.open .mega-menu{opacity:1;pointer-events:auto;transform:translateX(-50%) translateY(0)}.mega-intro strong{font-size:22px;color:var(--title)}.mega-intro p{margin:8px 0 14px}.mega-links{display:grid;grid-template-columns:1fr 1fr;gap:8px 18px}.mega-links a,.mega-feature a{display:block;padding:10px 0;border-bottom:1px solid var(--border);color:var(--title)}.mega-feature{background:var(--light);padding:18px}.mega-feature>span{display:block;font-size:12px;text-transform:uppercase;color:var(--muted);letter-spacing:.08em;margin-bottom:4px}.header-actions{display:flex;align-items:center;gap:10px;white-space:nowrap}.lang-switch{min-width:42px;text-align:center;font-weight:700}.download-btn{display:inline-flex;min-height:44px;align-items:center;justify-content:center;padding:0 18px;border-radius:8px;background:var(--blue2);color:#fff;font-weight:700;text-decoration:none!important}.download-btn:hover{background:#1d4f85}.mobile-menu-btn{display:none;width:44px;height:44px;border:1px solid var(--border);background:#fff;font-size:22px}.mobile-menu{display:none}.container{width:min(var(--max),calc(100% - 48px));margin:auto}.hero{background:linear-gradient(110deg,#fff 0 55%,#f2f7fd 55%);padding:64px 0 76px}.hero-grid{display:grid;grid-template-columns:55% 45%;align-items:center;min-height:520px}.eyebrow{font-size:13px;font-weight:800;color:var(--blue2);letter-spacing:.08em;text-transform:uppercase}.hero h1,.page-hero h1{color:var(--title);font-size:clamp(38px,5.2vw,66px);line-height:1.08;margin:16px 0 18px;letter-spacing:-.035em}.hero .sub{font-size:20px;color:var(--blue2);font-weight:700}.hero-copy{font-size:17px;max-width:650px}.hero-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin:26px 0}.text-link{font-weight:700}.cap-tags{display:flex;gap:8px;flex-wrap:wrap}.cap-tags span{background:var(--tag);color:#2e648f;padding:5px 9px;border-radius:6px;font-size:13px}.hero-visual{position:relative;padding:24px 10px 10px 54px}.hero-visual:before,.hero-visual:after{content:"";position:absolute;border:1px solid #cfe1f3;z-index:0}.hero-visual:before{width:72%;height:72%;right:0;top:5%;transform:rotate(5deg)}.hero-visual:after{width:46%;height:42%;left:14%;bottom:4%;transform:rotate(-8deg)}.hero-visual img{position:relative;z-index:2;width:100%;max-height:470px;object-fit:contain}.section{padding:80px 0}.section.light{background:var(--light)}.section-title{max-width:760px;margin-bottom:34px}.section-title h2{font-size:clamp(30px,4vw,46px);line-height:1.15;color:var(--title);margin:0 0 12px}.section-title p{font-size:17px;margin:0}.task-nav{display:grid;grid-template-columns:.95fr 1.15fr 1fr 1.2fr .9fr;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.task-item{padding:24px 18px;border-right:1px solid var(--border)}.task-item:last-child{border-right:0}.task-num{display:block;color:var(--blue);font-weight:800;font-size:12px}.task-item h3{font-size:18px;color:var(--title);margin:7px 0}.task-item p{font-size:14px;margin:0 0 8px}.mosaic{display:grid;grid-template-columns:1.25fr .75fr .9fr;grid-template-rows:auto auto;gap:18px}.mosaic>article{border:1px solid var(--border);padding:28px;background:#fff}.mosaic .wide{grid-row:span 2;background:var(--light)}.mosaic .visual{grid-column:span 2;display:grid;grid-template-columns:1fr .9fr;align-items:center}.mosaic img{width:100%;max-height:250px;object-fit:contain}.mosaic h3{color:var(--title);font-size:24px;margin:0 0 10px}.network-stage{display:grid;grid-template-columns:260px 1fr;gap:28px}.network-tabs{display:flex;flex-direction:column;border-left:2px solid var(--border)}.network-tabs button{min-height:50px;text-align:left;border:0;background:transparent;padding:10px 16px;color:var(--text);font-weight:700}.network-tabs button[aria-selected="true"]{border-left:3px solid var(--blue);margin-left:-2px;color:var(--blue2);background:#f7fbff}.network-panel{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:center;background:#fff;border:1px solid var(--border);padding:34px;margin-bottom:16px}.js .network-panel{display:none}.js .network-panel.active{display:grid}.network-panel img{width:100%;max-height:300px;object-fit:contain}.network-panel h3{font-size:30px;color:var(--title);margin-top:0}.steps{position:relative;max-width:960px;margin:auto}.steps:before{content:"";position:absolute;left:50%;top:0;bottom:0;width:1px;background:var(--border)}.step{width:50%;padding:10px 46px 26px 0;position:relative}.step:nth-child(even){margin-left:50%;padding:10px 0 26px 46px}.step:after{content:"";position:absolute;top:20px;right:-6px;width:11px;height:11px;border-radius:50%;background:var(--blue)}.step:nth-child(even):after{left:-5px}.step strong{font-size:13px;color:var(--blue2)}.step h3{color:var(--title);margin:4px 0 5px}.web3-flow{display:grid;grid-template-columns:.85fr 1.15fr;gap:54px}.flow-list{counter-reset:f;display:grid;gap:0}.flow-list div{counter-increment:f;border-left:1px solid var(--border);padding:12px 0 12px 42px;position:relative}.flow-list div:before{content:counter(f,decimal-leading-zero);position:absolute;left:-16px;top:12px;background:#fff;border:1px solid var(--border);width:32px;height:32px;display:grid;place-items:center;font-size:11px;font-weight:800;color:var(--blue2)}.notice{margin-top:24px;padding:18px 20px;background:var(--tag);border-left:3px solid var(--blue2)}.security-section{background:var(--deep);color:#dceaf8}.security-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}.security-section h2,.security-section h3{color:#fff}.security-section a{color:#dceeff}.security-visual{display:grid;grid-template-columns:.9fr 1.1fr;gap:20px;align-items:center}.security-visual img{width:100%;filter:brightness(1.08)}.checklist{margin:0;padding:0;list-style:none}.checklist li{padding:10px 0;border-bottom:1px solid rgba(255,255,255,.15)}.checklist li:before{content:"✓";margin-right:10px;color:#8fc5ff}.academy-layout{display:grid;grid-template-columns:1.35fr .8fr;gap:46px}.feature-article{border-top:4px solid var(--blue2);padding-top:22px}.feature-article h3{font-size:34px;color:var(--title);line-height:1.2}.article-index{border-left:1px solid var(--border);padding-left:26px}.article-index article{padding:13px 0;border-bottom:1px solid var(--border)}.article-index span{font-size:12px;color:var(--blue2);font-weight:800}.article-index h4{margin:4px 0;color:var(--title)}.pos-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:24px}.pos-layout article{padding:34px;border-top:2px solid var(--border);background:#fff}.updates{border-top:1px solid var(--border)}.update-row{display:grid;grid-template-columns:150px 1fr auto;gap:22px;padding:20px 0;border-bottom:1px solid var(--border);align-items:start}.update-row span{color:var(--muted);font-size:13px}.faq-list{border-top:1px solid var(--border)}.faq-item{border-bottom:1px solid var(--border)}.faq-q{width:100%;display:flex;justify-content:space-between;gap:20px;min-height:58px;align-items:center;text-align:left;border:0;background:transparent;font:inherit;font-weight:750;color:var(--title);padding:14px 2px}.faq-a{padding:0 2px 18px}.js .faq-a{display:none}.js .faq-item.open .faq-a{display:block}.cta{background:var(--light2);padding:48px;display:flex;justify-content:space-between;gap:32px;align-items:center}.cta h2{color:var(--title);margin:0 0 6px}.page-hero{padding:62px 0 48px;background:var(--light)}.breadcrumbs{font-size:13px;color:var(--muted);margin-bottom:12px}.page-hero h1{font-size:clamp(38px,4.8vw,58px);max-width:900px}.page-lead{max-width:820px;font-size:18px}.article-shell{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:54px;padding-top:56px;padding-bottom:70px}.article-body{min-width:0}.article-figure{margin:0 0 34px;padding:24px;background:var(--light);border:1px solid var(--border)}.article-figure img{display:block;width:100%;max-height:360px;object-fit:contain}.article-body h2{color:var(--title);font-size:30px;margin:52px 0 15px;scroll-margin-top:110px}.article-body h2:first-child{margin-top:0}.article-body h3{color:var(--title);font-size:21px;margin-top:28px}.article-body p{margin:0 0 17px}.article-body ul,.article-body ol{padding-left:23px}.article-body li{margin:8px 0}.article-note{padding:20px 22px;background:var(--light2);border-left:3px solid var(--blue2);margin:26px 0}.risk-note{padding:22px;border:1px solid var(--border);background:#fbfdff;margin:30px 0}.toc{position:sticky;top:112px;align-self:start;border-left:1px solid var(--border);padding-left:20px}.toc strong{display:block;color:var(--title);margin-bottom:9px}.toc a{display:block;padding:5px 0;color:var(--muted);font-size:14px}.toc a.active{color:var(--blue2);font-weight:800}.mobile-toc{display:none}.topic-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:28px 0}.topic-points div{padding:16px;background:var(--light);border-top:2px solid var(--border)}.topic-points strong{display:block;color:var(--title)}.service-layout{display:grid;grid-template-columns:1fr 1fr;gap:24px}.service-panel{border-top:2px solid var(--blue2);padding:26px;background:var(--light)}.site-footer{background:var(--footer);color:#cbdcec;padding:56px 24px 24px}.footer-inner{max-width:var(--max);margin:auto;display:grid;grid-template-columns:1.35fr repeat(3,.75fr);gap:36px}.footer-brand img{width:140px;filter:brightness(0) invert(1);opacity:.95}.site-footer h2{color:#fff;font-size:15px}.site-footer a{display:block;color:#dcebf8;padding:5px 0}.footer-bottom{max-width:var(--max);margin:35px auto 0;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);display:grid;grid-template-columns:auto 1fr auto;gap:18px;font-size:12px;color:#9fb7cb}.back-top{white-space:nowrap}
@media(max-width:1080px){.desktop-nav{display:none}.mobile-menu-btn{display:block}.header-inner{padding:0 18px}.header-actions{margin-left:auto}.mobile-menu{position:fixed;inset:0;background:#fff;z-index:2000;padding:0 18px 22px;overflow-y:auto}.mobile-menu.open{display:block}.mobile-menu-top{height:74px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}.mobile-menu-top img{width:132px;height:38px;object-fit:contain}.mobile-menu-top>div{display:flex;align-items:center;gap:16px}.mobile-menu-top button{width:44px;height:44px;border:0;background:transparent;font-size:34px}.mobile-menu-body{padding:14px 0}.mobile-nav-section{border-bottom:1px solid var(--border)}.mobile-accordion{width:100%;min-height:52px;border:0;background:transparent;display:flex;align-items:center;justify-content:space-between;text-align:left;color:var(--title);font-weight:750;font-size:17px}.mobile-subnav{display:none;padding:0 0 14px 18px}.mobile-nav-section.open .mobile-subnav{display:grid}.mobile-subnav a{min-height:44px;display:flex;align-items:center}.mobile-menu-foot{display:grid;gap:10px;padding-top:18px}.mobile-menu-foot>a:not(.download-btn){min-height:44px;display:flex;align-items:center}.hero-grid{grid-template-columns:1fr 1fr}.task-nav{grid-template-columns:repeat(3,1fr)}.task-item:nth-child(3){border-right:0}.task-item:nth-child(n+4){border-top:1px solid var(--border)}.mosaic{grid-template-columns:1fr 1fr}.mosaic .wide{grid-row:auto}.mosaic .visual{grid-column:span 2}.article-shell{grid-template-columns:1fr}.toc{display:none}.mobile-toc{display:block;border:1px solid var(--border);padding:12px 16px;margin:0 0 28px}.mobile-toc summary{font-weight:800;color:var(--title)}.mobile-toc a{display:block;padding:8px 0}}
@media(max-width:760px){.container{width:min(100% - 32px,var(--max))}.security-strip{text-align:left;font-size:12px;padding:8px 16px}.site-header .download-btn{padding:0 12px}.lang-switch{min-width:auto}.brand img{width:118px}.header-inner{height:64px}.hero{padding:36px 0 48px;background:linear-gradient(#fff 0 56%,#f3f7fc 56%)}.hero-grid{grid-template-columns:1fr}.hero h1{font-size:40px}.hero .sub{font-size:17px}.hero-visual{padding:34px 0 0}.hero-visual img{max-height:400px}.hero-actions{align-items:stretch}.task-nav{display:block;border-bottom:0}.task-item{border-right:0!important;border-bottom:1px solid var(--border);padding:20px 0}.section{padding:58px 0}.mosaic{display:block}.mosaic>article{margin-bottom:14px}.mosaic .visual{display:block}.network-stage{display:block}.network-tabs{flex-direction:row;overflow-x:auto;border-left:0;border-bottom:1px solid var(--border);margin-bottom:18px;scrollbar-width:thin}.network-tabs button{white-space:nowrap}.network-tabs button[aria-selected="true"]{border-left:0;border-bottom:3px solid var(--blue);margin-left:0}.network-panel,.network-panel.active{grid-template-columns:1fr;padding:24px}.steps:before{left:7px}.step,.step:nth-child(even){width:100%;margin-left:0;padding:5px 0 25px 34px}.step:after,.step:nth-child(even):after{left:2px;right:auto}.web3-flow,.security-grid,.academy-layout,.pos-layout{grid-template-columns:1fr}.security-visual{grid-template-columns:1fr}.update-row{grid-template-columns:1fr;gap:4px}.cta{padding:28px;display:block}.cta .download-btn{margin-top:16px}.page-hero{padding:42px 0 34px}.page-hero h1{font-size:38px}.article-shell{padding-top:34px}.topic-points{grid-template-columns:1fr}.service-layout{grid-template-columns:1fr}.footer-inner{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-bottom{grid-template-columns:1fr}.site-header .download-btn{font-size:13px}.mobile-menu-btn{flex:none}}
@media(max-width:430px){.header-inner{gap:8px}.site-header .download-btn{display:none}.hero h1{font-size:36px}.footer-inner{grid-template-columns:1fr}.mosaic h3{font-size:22px}}