:root{--blue:#3f8fe5;--blue-dark:#245f9e;--ink:#16283c;--text:#43566a;--muted:#718296;--line:#dce7f2;--pale:#f5f8fc;--pale2:#edf4fb;--tag:#eaf4ff;--footer:#163f69;--shadow:0 16px 42px rgba(42,93,145,.10);--radius:22px;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:118px}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:#fff;line-height:1.75;overflow-x:hidden}body.menu-open{overflow:hidden}a{color:var(--blue-dark);text-decoration:none}a:hover{text-decoration:underline}button,a{touch-action:manipulation}img{max-width:100%;height:auto}button{font:inherit}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;left:12px;top:-80px;z-index:9999;background:#fff;padding:10px 14px;border:2px solid var(--blue);border-radius:8px}.skip-link:focus{top:12px}.safety-strip{background:#edf4fb;color:#36536f;font-size:13px;text-align:center;padding:6px 16px;border-bottom:1px solid #d9e7f4}.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.header-inner{max-width:var(--max);margin:auto;height:74px;padding:0 24px;display:grid;grid-template-columns:190px 1fr auto;align-items:center;gap:20px}.brand{display:inline-flex;align-items:center}.brand img{width:auto;max-width:150px;max-height:42px;object-fit:contain}.desktop-nav{display:flex;justify-content:center;align-items:stretch;height:100%;gap:2px}.nav-group{position:relative;display:flex;align-items:center}.nav-trigger,.nav-plain{border:0;background:transparent;color:#2d4359;padding:0 16px;min-height:44px;display:flex;align-items:center;cursor:pointer;position:relative}.nav-group.is-active .nav-trigger,.nav-plain.is-active{color:var(--blue-dark)}.nav-group.is-active .nav-trigger:after,.nav-plain.is-active:after{content:"";position:absolute;left:16px;right:16px;bottom:11px;height:2px;background:var(--blue)}.mega-menu{position:fixed;left:50%;top:104px;transform:translateX(-50%);width:min(960px,calc(100vw - 48px));background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:0 0 18px 18px;padding:26px;display:grid;grid-template-columns:1fr 2fr;gap:28px;z-index:1100}.mega-menu[hidden]{display:none}.mega-intro{border-right:1px solid var(--line);padding-right:24px}.eyebrow{display:inline-block;font-size:13px;color:var(--blue-dark);font-weight:700;letter-spacing:.08em}.mega-intro p{margin:8px 0 12px}.mega-links{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.mega-links a{display:flex;flex-direction:column;padding:12px 14px;border-radius:10px}.mega-links a:hover{background:var(--pale);text-decoration:none}.mega-links strong{color:var(--ink)}.mega-links span{color:var(--muted);font-size:13px}.header-actions{display:flex;align-items:center;gap:10px}.download-btn,.primary-btn{display:inline-flex;min-height:44px;align-items:center;justify-content:center;padding:0 19px;background:var(--blue);color:#fff;border-radius:10px;font-weight:700;border:1px solid var(--blue);position:relative;z-index:1}.download-btn:hover,.primary-btn:hover{background:#2d7fd2;text-decoration:none}.download-btn:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid rgba(63,143,229,.35);outline-offset:3px}.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;padding:10px;cursor:pointer}.menu-toggle span{display:block;height:2px;background:var(--ink);margin:4px 0}.mobile-menu{position:fixed;inset:0;z-index:2000;background:#fff;overflow:auto;padding:18px 22px 32px}.mobile-menu[hidden]{display:none}.mobile-menu-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:14px}.mobile-close{width:44px;height:44px;border:0;background:var(--pale);font-size:30px;border-radius:10px;cursor:pointer}.mobile-groups{margin-top:10px}.mobile-group{border-bottom:1px solid var(--line)}.mobile-group-toggle{width:100%;min-height:54px;border:0;background:#fff;display:flex;justify-content:space-between;align-items:center;text-align:left;color:var(--ink);font-weight:700;cursor:pointer}.mobile-sub{padding:0 0 14px 14px}.mobile-sub a{display:block;padding:10px 0;color:var(--text)}.mobile-menu-foot{display:flex;flex-direction:column;gap:12px;padding-top:24px}.site-main{min-height:60vh}.container{width:min(var(--max),calc(100% - 48px));margin:auto}.section{padding:76px 0}.section-soft{background:var(--pale)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:32px;margin-bottom:30px}.section-head h2{margin:0;color:var(--ink);font-size:clamp(27px,3vw,42px);line-height:1.2}.section-head p{max-width:680px;margin:0;color:var(--muted)}.hero{padding:64px 0 72px;background:linear-gradient(180deg,#fff,#f8fbfe)}.hero-grid{display:grid;grid-template-columns:42fr 58fr;gap:64px;align-items:center}.hero-media{background:var(--pale2);border-radius:34px;min-height:470px;display:flex;align-items:center;justify-content:center;padding:34px}.hero-media img{max-height:430px;object-fit:contain}.hero-copy h1{font-size:clamp(38px,5vw,64px);line-height:1.08;color:var(--ink);margin:12px 0 20px;letter-spacing:-.035em}.hero-subtitle{font-size:20px;color:var(--blue-dark);font-weight:700}.hero-copy p{font-size:17px;max-width:720px}.hero-actions{display:flex;gap:16px;align-items:center;flex-wrap:wrap;margin:25px 0}.text-link{font-weight:700}.capabilities{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}.capabilities span,.tag{background:var(--tag);color:#285f94;border:1px solid #d2e8fb;border-radius:999px;padding:5px 10px;font-size:13px}.hero-links{display:flex;gap:22px;flex-wrap:wrap;margin-top:24px}.task-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.task{padding:26px 24px;border-right:1px solid var(--line)}.task:last-child{border-right:0}.task-num{font-size:12px;color:var(--blue);font-weight:800;letter-spacing:.12em}.task h3{color:var(--ink);margin:6px 0}.task p{font-size:14px;color:var(--muted)}.bento{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:minmax(170px,auto);gap:16px}.bento-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:0 7px 20px rgba(42,93,145,.06);overflow:hidden}.bento-item h3{color:var(--ink);margin-top:0}.bento-item img{max-height:180px;display:block;margin:14px auto 0}.bento-large{grid-column:span 2;grid-row:span 2}.bento-wide{grid-column:span 2}.bento-tall{grid-row:span 2;background:var(--pale)}.steps{display:grid;grid-template-columns:repeat(6,1fr);gap:0;position:relative}.steps:before{content:"";position:absolute;left:4%;right:4%;top:26px;height:1px;background:var(--line)}.step{position:relative;padding:0 13px}.step-num{width:52px;height:52px;border-radius:50%;background:#fff;border:2px solid var(--blue);display:grid;place-items:center;color:var(--blue-dark);font-weight:800;position:relative;z-index:1}.step h3{font-size:16px;color:var(--ink)}.step p{font-size:13px;color:var(--muted)}.tabs{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;margin-bottom:22px}.tabs button{border:1px solid var(--line);background:#fff;color:var(--text);min-height:44px;padding:0 18px;border-radius:10px;white-space:nowrap;cursor:pointer}.tabs button[aria-selected="true"]{background:var(--blue);color:#fff;border-color:var(--blue)}.tab-panel{display:grid;grid-template-columns:1.15fr .85fr;align-items:center;gap:50px;background:var(--pale);border-radius:24px;padding:34px}.tab-panel[hidden]{display:none}.tab-panel img{max-height:260px;display:block;margin:auto}.security-band{background:var(--blue-dark);color:#eaf4ff;padding:74px 0}.security-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}.security-band h2,.security-band h3{color:#fff}.security-band .download-btn{background:#fff;color:var(--blue-dark);border-color:#fff}.security-visual{display:grid;grid-template-columns:.8fr 1.2fr;gap:22px;align-items:center}.security-visual img{background:rgba(255,255,255,.08);padding:20px;border-radius:20px}.check-list{list-style:none;padding:0;margin:0}.check-list li{padding:10px 0;border-bottom:1px solid rgba(255,255,255,.18)}.check-list li:before{content:"✓";margin-right:10px;font-weight:800}.editorial{display:grid;grid-template-columns:1.15fr .85fr;gap:36px}.feature-article{background:var(--pale);border-radius:24px;padding:34px}.feature-article h3{font-size:30px;color:var(--ink);margin:8px 0}.article-list a{display:block;padding:17px 0;border-bottom:1px solid var(--line)}.article-list strong{display:block;color:var(--ink);font-size:18px}.article-list small{color:var(--muted)}.compare{display:grid;grid-template-columns:1.15fr .85fr;gap:24px}.compare-app{background:var(--pale2);border-radius:28px;padding:32px;display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:center}.compare-app img{max-height:330px;margin:auto}.compare-web{padding:32px;border-left:3px solid var(--blue);align-self:center}.plain-list{padding-left:18px}.staking-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}.knowledge,.risk-box{padding:30px;border:1px solid var(--line);border-radius:22px}.risk-box{background:var(--pale)}.timeline{max-width:900px;margin:auto;position:relative}.timeline:before{content:"";position:absolute;left:16px;top:0;bottom:0;width:1px;background:var(--line)}.timeline-item{position:relative;padding:0 0 32px 54px}.timeline-item:before{content:"";position:absolute;left:10px;top:8px;width:13px;height:13px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 6px #eaf4ff}.timeline-item h3{margin:5px 0;color:var(--ink)}.faq-list{max-width:900px;margin:auto;border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-q{width:100%;min-height:58px;border:0;background:#fff;text-align:left;color:var(--ink);font-weight:700;display:flex;justify-content:space-between;gap:20px;align-items:center;cursor:pointer;padding:14px 0}.faq-a{padding:0 0 22px;color:var(--text)}.faq-a[hidden]{display:none}.cta-band{padding:56px 0;background:var(--pale2)}.cta-inner{display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center}.cta-inner h2{color:var(--ink);margin:0}.site-footer{background:var(--footer);color:#d8e9fa;padding:56px 0 0}.footer-grid{width:min(var(--max),calc(100% - 48px));margin:auto;display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:42px}.brand-footer img{filter:brightness(0) invert(1)}.footer-grid h2{font-size:15px;color:#fff;margin-top:0}.footer-grid a{display:block;color:#eaf4ff;padding:5px 0}.footer-brand p{font-size:14px}.footer-risk{opacity:.78}.footer-bottom{width:min(var(--max),calc(100% - 48px));margin:42px auto 0;padding:20px 0;border-top:1px solid rgba(255,255,255,.16);display:flex;justify-content:space-between;gap:20px;font-size:12px}.footer-bottom a{color:#fff}.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:18px}.page-hero{padding:50px 0 42px;background:var(--pale)}.page-hero .container{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:30px;align-items:end}.page-hero h1{font-size:clamp(34px,4vw,52px);line-height:1.12;color:var(--ink);margin:8px 0 15px}.page-hero p{max-width:820px;margin:0}.page-hero img{max-width:280px;max-height:200px;object-fit:contain}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:64px;padding:56px 0 80px}.article-body{min-width:0}.article-body h2{scroll-margin-top:120px;color:var(--ink);font-size:29px;margin:50px 0 12px}.article-body h2:first-child{margin-top:0}.article-body h3{color:var(--ink);font-size:20px}.article-body p{margin:10px 0 16px}.article-body ul,.article-body ol{padding-left:22px}.notice{background:#eef6ff;border-left:4px solid var(--blue);padding:18px 20px;border-radius:0 12px 12px 0;margin:24px 0}.risk-notice{background:#f6f8fb;border:1px solid var(--line);padding:22px;border-radius:14px;margin-top:40px}.article-aside{position:relative}.article-toc{position:sticky;top:118px;border-left:1px solid var(--line);padding-left:22px}.article-toc h2{font-size:14px;color:var(--ink);margin:0 0 10px}.article-toc-list a{display:block;color:var(--muted);font-size:13px;padding:7px 0}.article-toc-list a.is-current{color:var(--blue-dark);font-weight:700}.mobile-toc{display:none}.related{margin-top:44px;border-top:1px solid var(--line);padding-top:28px}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.related-grid a{padding:15px;border:1px solid var(--line);border-radius:12px;background:#fff}.center-hero{padding:58px 0;background:#fff}.center-hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:center}.center-hero h1{font-size:clamp(38px,4.4vw,58px);color:var(--ink);line-height:1.1;margin:10px 0 16px}.center-map{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.center-map a{padding:18px;border:1px solid var(--line);border-radius:14px;background:var(--pale);font-weight:700}.hub-section{padding:58px 0}.hub-split{display:grid;grid-template-columns:1fr 1fr;gap:30px}.hub-panel{padding:28px;border-radius:20px;border:1px solid var(--line)}.hub-panel h2{color:var(--ink)}.news-filter{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:30px}.news-filter a{padding:8px 12px;border:1px solid var(--line);border-radius:8px}.support-flow{counter-reset:flow;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.support-flow div{padding:22px;border-top:3px solid var(--blue);background:var(--pale)}.support-flow div:before{counter-increment:flow;content:"0" counter(flow);display:block;color:var(--blue);font-weight:800}.glossary-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.term{border:1px solid var(--line);border-radius:14px;padding:20px}.term h2{margin:0 0 6px!important;font-size:22px!important}.tutorial-list{display:grid;gap:12px}.tutorial-list a{display:grid;grid-template-columns:150px 1fr auto;gap:18px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}
@media(max-width:980px){.header-inner{grid-template-columns:1fr auto}.desktop-nav{display:none}.menu-toggle{display:block}.mega-menu{display:none!important}.hero-grid,.security-grid,.editorial,.compare,.staking-grid,.center-hero-inner,.page-hero .container{grid-template-columns:1fr}.hero-grid{gap:30px}.hero-copy{order:1}.hero-media{order:2;min-height:360px}.task-grid{grid-template-columns:repeat(2,1fr)}.task:nth-child(2){border-right:0}.task:nth-child(-n+2){border-bottom:1px solid var(--line)}.bento{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:repeat(3,1fr);row-gap:30px}.steps:before{display:none}.compare-app{grid-template-columns:1fr}.article-layout{grid-template-columns:1fr}.article-aside{display:none}.mobile-toc{display:block;border:1px solid var(--line);padding:14px;border-radius:12px;margin:20px 0}.mobile-toc summary{cursor:pointer;font-weight:700;color:var(--ink)}.mobile-toc a{display:block;padding:6px 0}.footer-grid{grid-template-columns:1.4fr 1fr 1fr}.footer-grid>div:last-child{grid-column:2}.support-flow{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.safety-strip{text-align:left;font-size:12px;line-height:1.45}.header-inner{height:66px;padding:0 16px;gap:8px}.brand img{max-width:112px;max-height:36px}.header-actions .download-btn{padding:0 12px;font-size:13px}.container{width:min(100% - 30px,var(--max))}.section{padding:54px 0}.hero{padding:40px 0 52px}.hero-copy h1{font-size:38px}.hero-media{min-height:300px;padding:20px}.hero-media img{max-height:340px}.task-grid{grid-template-columns:1fr}.task{border-right:0;border-bottom:1px solid var(--line)!important}.task:last-child{border-bottom:0!important}.bento{grid-template-columns:1fr}.bento-large,.bento-wide{grid-column:span 1}.bento-tall{grid-row:span 1}.steps{grid-template-columns:1fr}.step{display:grid;grid-template-columns:52px 1fr;column-gap:16px}.step h3,.step p{grid-column:2}.step-num{grid-row:1/3}.tab-panel{grid-template-columns:1fr;padding:24px}.security-visual{grid-template-columns:1fr}.compare-app{padding:24px}.hub-split,.glossary-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-grid>div:first-child{grid-column:1/-1}.footer-grid>div:last-child{grid-column:auto}.footer-bottom{flex-direction:column}.cta-inner{grid-template-columns:1fr}.page-hero{padding:36px 0}.page-hero img{max-width:210px}.article-layout{padding-top:34px}.related-grid{grid-template-columns:1fr}.support-flow{grid-template-columns:1fr}.tutorial-list a{grid-template-columns:1fr;gap:4px}.section-head{align-items:start;flex-direction:column}.center-map{grid-template-columns:1fr}.hero-actions{align-items:stretch}.hero-actions .download-btn{width:100%}}

.primary-btn{min-height:44px;align-items:center;justify-content:center;padding:0 19px;background:var(--blue);color:#fff;border-radius:10px;font-weight:700;border:1px solid var(--blue)}.network-mark{min-height:220px;border-radius:24px;background:linear-gradient(135deg,#eaf4ff,#fff);display:grid;place-items:center;text-align:center;font-size:42px;line-height:1.15;font-weight:800;color:#8ab8e8;letter-spacing:.08em}.phone-mark{min-height:280px;border:1px solid #cfe3f7;border-radius:34px;background:#fff;display:grid;place-items:center;text-align:center;color:#5b88b3;font-size:18px;box-shadow:inset 0 0 0 9px #edf4fb}.phone-mark strong{font-size:40px;color:var(--ink)}.center-security{background:var(--blue-dark);color:#eaf4ff}.center-security h1,.center-security h2{color:#fff}.center-security .eyebrow{color:#d5eaff}.academy-lead{display:grid;grid-template-columns:1.3fr .7fr;gap:44px;align-items:start}.academy-path{border-left:3px solid var(--blue);padding-left:24px}.academy-path a{display:block;padding:12px 0;border-bottom:1px solid var(--line);font-weight:700}.service-lead{display:grid;grid-template-columns:.85fr 1.15fr;gap:36px;align-items:center}.service-pillars{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.service-pillars a{padding:20px;border:1px solid var(--line);border-radius:14px;background:#fff;font-weight:700}@media(max-width:680px){.academy-lead,.service-lead{grid-template-columns:1fr}.service-pillars{grid-template-columns:1fr}.network-mark{min-height:150px}.phone-mark{min-height:180px}}

.noscript-nav{width:min(var(--max),calc(100% - 30px));margin:12px auto;display:flex;gap:14px;flex-wrap:wrap;padding:10px 0;border-bottom:1px solid var(--line)}.noscript-nav a{font-weight:700}