*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:105px}body{margin:0;font-family:Arial,"Microsoft YaHei",sans-serif;color:#43566a;background:#fff;line-height:1.72;overflow-x:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block}button{font:inherit}.wrap{width:min(1180px,calc(100% - 40px));margin:auto}.narrow{width:min(860px,100%)}.skip-link{position:fixed;top:-60px;left:16px;z-index:3000;background:#fff;padding:12px 16px;border:1px solid #dce7f2}.skip-link:focus{top:16px}.security-strip{background:#edf4fb;color:#245f9e;text-align:center;padding:9px 18px;font-size:13px}.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid #dce7f2}.header-row{height:76px;display:flex;align-items:center;gap:22px}.brand img{width:142px}.desktop-nav{display:flex;align-items:stretch;gap:2px;flex:1;height:100%}.mega-wrap{position:relative;display:flex;align-items:center}.mega-trigger{border:0;background:transparent;color:#16283c;padding:0 10px;height:44px;cursor:pointer;font-weight:700}.mega-menu{position:absolute;left:50%;top:64px;transform:translateX(-50%);width:min(820px,80vw);display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:28px;padding:28px;background:#fff;border:1px solid #dce7f2;box-shadow:0 18px 55px rgba(21,63,102,.14);border-radius:14px;opacity:0;visibility:hidden;pointer-events:none;transition:.16s}.mega-wrap.open .mega-menu,.mega-wrap:hover .mega-menu,.mega-wrap:focus-within .mega-menu{opacity:1;visibility:visible;pointer-events:auto}.mega-intro strong{font-size:20px;color:#16283c}.mega-intro p{font-size:14px}.mega-intro>a{color:#245f9e;font-weight:700}.mega-links{display:grid}.mega-links a{padding:8px 0;border-bottom:1px solid #edf4fb}.mega-feature{background:#f5f8fc;padding:18px}.mega-feature>span{font-size:12px;color:#718296}.mega-feature a{display:block;padding:10px 0;border-bottom:1px solid #dce7f2;color:#16283c;font-weight:700}.mega-feature small{display:block;color:#718296;font-weight:400}.header-actions{display:flex;align-items:center;gap:8px;margin-left:auto}.lang-switch{min-height:44px;display:inline-flex;align-items:center;padding:0 8px;color:#245f9e;font-weight:700}.download-btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;background:#3f8fe5;color:#fff;border-radius:8px;font-weight:700}.mobile-menu-btn{display:none;min-height:44px;border:0;background:#edf4fb;padding:0 12px}.mobile-menu{position:fixed;inset:0;background:#fff;z-index:1200;transform:translateX(102%);transition:.24s;overflow:auto;padding:18px 22px}.mobile-menu.open{transform:none}.mobile-menu-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid #dce7f2}.mobile-menu-top>div{display:flex;gap:10px;align-items:center}.mobile-close{width:44px;height:44px;border:1px solid #dce7f2;background:#fff;border-radius:8px;font-size:28px}.mobile-group{border-bottom:1px solid #dce7f2}.mobile-group-toggle{width:100%;min-height:52px;border:0;background:#fff;display:flex;align-items:center;justify-content:space-between;font-weight:700;color:#16283c;touch-action:manipulation}.mobile-group-links{display:none;padding:0 0 14px 16px}.mobile-group.open .mobile-group-links{display:grid}.mobile-group-links a{min-height:44px;display:flex;align-items:center}.mobile-menu-bottom{display:grid;gap:10px;padding-top:24px}.eyebrow{color:#3f8fe5;font-size:13px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.hero{padding:76px 0 54px;background:linear-gradient(180deg,#fff,#f5f8fc)}.hero-grid{display:grid;grid-template-columns:1.2fr .9fr;gap:56px;align-items:center}.hero h1,.inner-hero h1{font-size:clamp(40px,5vw,66px);line-height:1.08;color:#16283c;margin:0 0 18px}.hero-sub{font-size:20px;color:#245f9e;font-weight:700}.hero-copy{font-size:17px}.hero-actions{display:flex;gap:14px;align-items:center;margin:28px 0 20px}.text-link{color:#245f9e;font-weight:700}.capability-tags{display:flex;flex-wrap:wrap;gap:8px}.capability-tags span{background:#eaf4ff;color:#245f9e;padding:6px 10px;border-radius:6px;font-size:13px}.hero-art{min-height:500px;display:flex;align-items:center;justify-content:center;background:#edf4fb;border-radius:22px;overflow:hidden}.hero-art img{max-height:470px;width:auto;object-fit:contain}.task-nav{padding:24px 0 70px;background:#f5f8fc}.task-row{display:grid;grid-template-columns:1.35fr .9fr 1.15fr .9fr 1.15fr;border-block:1px solid #dce7f2}.task-item{padding:24px 18px;border-right:1px solid #dce7f2}.task-item:last-child{border-right:0}.task-item h2{font-size:18px;color:#16283c}.task-item b{color:#3f8fe5}.section-pad{padding:88px 0}.section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:34px}.section-head h2{font-size:40px;color:#16283c;margin:0}.section-head p{max-width:600px}.mosaic{display:grid;grid-template-columns:1.3fr .8fr 1fr;grid-template-areas:"a a b" "c d b" "c e e";gap:18px}.mosaic article{border:1px solid #dce7f2;border-radius:14px;padding:28px;min-height:180px}.mosaic h3{color:#16283c}.mosaic .a{grid-area:a;background:#f5f8fc}.mosaic .b{grid-area:b;background:#edf4fb}.mosaic .c{grid-area:c}.mosaic .d{grid-area:d}.mosaic .e{grid-area:e;background:#153f66;color:#dbeeff}.mosaic .e h3{color:#fff}.mosaic img{max-height:180px;margin:12px auto 0}.network-explorer{display:grid;grid-template-columns:280px 1fr;gap:34px}.network-tabs{display:flex;flex-direction:column;border-left:2px solid #dce7f2}.network-tabs button{min-height:52px;text-align:left;border:0;background:transparent;padding:0 18px;color:#718296}.network-tabs button[aria-selected="true"]{color:#245f9e;font-weight:800;border-left:3px solid #3f8fe5;margin-left:-2px}.network-stage{background:#f5f8fc;padding:34px;border-radius:16px}.network-panel{padding:4px 0 22px}.js .network-panel{display:none}.js .network-panel.is-active{display:grid;grid-template-columns:1fr 250px;gap:28px;align-items:center}.network-panel h3{font-size:28px;color:#16283c}.network-panel img{max-height:180px;margin:auto}.steps-zone{background:#f5f8fc}.journey{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}.journey article{border-top:2px solid #9cc6ef;padding-top:16px}.journey b{color:#245f9e}.journey h3{color:#16283c;font-size:17px}.web3-flow{display:grid;grid-template-columns:.8fr 1.2fr;gap:54px}.flow-list{border-left:1px solid #9cc6ef;margin:0;padding-left:32px}.flow-list li{padding:0 0 20px 8px}.safe-note{padding:20px;border-left:4px solid #3f8fe5;background:#eaf4ff}.security-feature{background:#153f66;color:#dbeeff}.security-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}.security-feature h2{color:#fff}.security-visual img{max-height:260px;margin:auto}.security-checks{display:grid;grid-template-columns:1fr 1fr;gap:10px}.security-checks span{border-bottom:1px solid rgba(255,255,255,.18);padding:10px 0}.academy-layout,.pos-layout{display:grid;grid-template-columns:1.3fr .8fr;gap:40px}.feature-article h3{font-size:32px;color:#16283c}.article-index{border-left:1px solid #dce7f2;padding-left:28px}.article-index article{border-bottom:1px solid #dce7f2;padding:15px 0}.article-index h3{font-size:17px;color:#16283c}.pos-layout article{background:#f5f8fc;border-top:3px solid #3f8fe5;padding:30px}.updates{display:grid}.update-row{display:grid;grid-template-columns:130px 1fr auto;gap:20px;padding:20px 0;border-top:1px solid #dce7f2}.update-row h3{margin:0;color:#16283c}.faq-home{background:#f5f8fc}.faq-list{border-top:1px solid #dce7f2}.faq-item{border-bottom:1px solid #dce7f2}.faq-item h2{margin:0}.faq-item button{width:100%;min-height:58px;padding:12px 0;text-align:left;border:0;background:transparent;color:#16283c;font-weight:700}.faq-answer{padding-bottom:20px}.faq-ready .faq-answer[hidden]{display:none}.download-cta{padding:88px 0}.cta-box{background:#245f9e;color:#fff;padding:54px;display:flex;align-items:center;justify-content:space-between;gap:30px;border-radius:14px}.cta-box h2{font-size:38px;color:#fff}.cta-box .download-btn{background:#fff;color:#245f9e}.inner-hero{padding:68px 0 46px;background:#f5f8fc}.inner-hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:50px;align-items:center}.breadcrumbs{display:flex;gap:8px;font-size:13px;color:#718296;margin-bottom:30px}.lead{font-size:18px}.inner-visual{background:#fff;border:1px solid #dce7f2;padding:26px;border-radius:16px}.inner-visual img{max-height:300px;margin:auto}.concept-panel{padding:30px;border-left:4px solid #3f8fe5;background:#fff}.concept-panel strong{font-size:24px;color:#16283c}.article-shell{padding:62px 0 96px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:52px}.prose-section{padding:10px 0 30px;border-bottom:1px solid #edf4fb}.prose-section h2,.notice-box h2,.check-section h2,.related h2{font-size:30px;color:#16283c}.prose-section h3{color:#245f9e;font-size:18px}.prose-section p{text-indent:2em}.notice-box{margin:32px 0;padding:26px 28px;background:#edf4fb;border-left:4px solid #3f8fe5}.check-list{display:grid;grid-template-columns:1fr 1fr;gap:10px 24px;padding:0;list-style:none}.check-list li{padding:10px 0 10px 28px;border-bottom:1px solid #dce7f2;position:relative}.check-list li:before{content:"✓";position:absolute;left:0;color:#3f8fe5}.related-links{display:grid;grid-template-columns:1fr 1fr;gap:12px}.related-links a{padding:14px 0;border-bottom:1px solid #dce7f2;color:#245f9e;font-weight:700;display:flex;justify-content:space-between}.toc{position:sticky;top:118px;align-self:start;border-left:1px solid #dce7f2;padding-left:20px}.toc-toggle{border:0;background:transparent;font-weight:800;color:#16283c}.toc-links{display:grid}.toc-links a{padding:8px 0;color:#718296;font-size:14px}.toc-links a.active{color:#245f9e;font-weight:800}.faq-page,.news-page,.support-page,.about-page{padding:52px 0 90px}.editorial-list{border-top:1px solid #dce7f2}.editorial-item{display:grid;grid-template-columns:150px 1fr;gap:30px;padding:30px 0;border-bottom:1px solid #dce7f2}.editorial-item h2{color:#16283c}.support-paths{display:grid;grid-template-columns:1fr 1fr;gap:24px}.support-paths article{padding:28px;border:1px solid #dce7f2;border-top:3px solid #3f8fe5}.support-paths h2{color:#16283c}.principles{display:grid;grid-template-columns:1.2fr .8fr;gap:40px}.principles article{padding:28px;background:#f5f8fc}.principles h2{color:#16283c}.site-footer{background:#123958;color:#cfe1f1;padding:54px 0 20px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:42px}.footer-brand img{width:145px;filter:brightness(0) invert(1)}.footer-grid h2{font-size:15px;color:#fff}.footer-grid>div>a{display:block;padding:5px 0}.footer-safety{font-size:13px;color:#9fc4e3}.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:38px;padding-top:18px;display:flex;gap:20px;flex-wrap:wrap;font-size:12px;color:#9fc4e3}.footer-bottom span:nth-child(2){flex:1}a:focus-visible,button:focus-visible{outline:3px solid rgba(63,143,229,.35);outline-offset:2px}
@media(max-width:1120px){.desktop-nav{display:none}.mobile-menu-btn{display:inline-flex;align-items:center;gap:8px}.article-layout{grid-template-columns:1fr}.toc{position:relative;top:auto;order:-1;border:1px solid #dce7f2;padding:14px}.toc-links{display:none}.toc.open .toc-links{display:grid}.journey{grid-template-columns:repeat(3,1fr)}}
@media(max-width:820px){.wrap{width:min(100% - 28px,1180px)}.header-row{height:66px}.brand img{width:126px}.hero-grid,.inner-hero-grid,.security-grid,.academy-layout,.pos-layout,.web3-flow,.principles{grid-template-columns:1fr}.hero h1,.inner-hero h1{font-size:40px}.hero-art{min-height:360px}.task-row{grid-template-columns:1fr 1fr}.task-item:nth-child(2n){border-right:0}.mosaic{grid-template-columns:1fr 1fr;grid-template-areas:"a a" "b c" "d e"}.network-explorer{grid-template-columns:1fr}.network-tabs{flex-direction:row;overflow-x:auto;border-left:0;border-bottom:2px solid #dce7f2}.network-tabs button{white-space:nowrap}.network-tabs button[aria-selected="true"]{border-left:0;border-bottom:3px solid #3f8fe5;margin-left:0}.js .network-panel.is-active{grid-template-columns:1fr}.security-checks,.check-list,.related-links,.support-paths{grid-template-columns:1fr}.section-head{display:block}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.update-row{grid-template-columns:1fr}.cta-box{display:block;padding:38px 28px}}
@media(max-width:520px){.mobile-menu-btn span{display:none}.hero-actions{flex-direction:column;align-items:stretch}.task-row{grid-template-columns:1fr}.task-item{border-right:0;border-bottom:1px solid #dce7f2}.mosaic{display:block}.mosaic article{margin-bottom:14px}.journey{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.hero h1,.inner-hero h1{font-size:34px}.section-head h2{font-size:30px}.cta-box h2{font-size:30px}}
/* Distinct content-page compositions */
.product-hero{padding:70px 0 54px;background:linear-gradient(110deg,#f5f8fc 0,#fff 68%)}
.product-story{padding:58px 0 96px}.product-capability-line{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:36px;border-bottom:1px solid #dce7f2;padding-bottom:20px}.product-capability-line span{padding:8px 12px;background:#eaf4ff;color:#245f9e;border-radius:8px;font-size:14px}
.product-chapter{display:grid;grid-template-columns:90px 1fr;gap:26px;padding:34px 0;border-bottom:1px solid #dce7f2}.product-chapter .chapter-no{font-size:34px;color:#9ab4cd;font-weight:800}.product-chapter h2{font-size:30px;color:#16283c}.product-chapter p{text-indent:2em}
.tutorial-shell{padding:56px 0 96px;max-width:920px}.prep-box{padding:24px 28px;background:#edf4fb;border-left:4px solid #3f8fe5;margin-bottom:36px}.prep-box strong{display:block;color:#16283c;font-size:20px;margin-bottom:8px}
.tutorial-step{display:grid;grid-template-columns:72px 1fr;gap:24px;padding:32px 0;border-top:1px solid #dce7f2}.tutorial-step>span{font-size:30px;color:#3f8fe5;font-weight:800}.tutorial-step h2{font-size:28px;color:#16283c}.tutorial-step p{text-indent:2em}
.security-inner-hero{padding:70px 0;background:#153f66;color:#dbeeff}.security-inner-hero h1,.security-inner-hero h2{color:#fff}.security-inner-hero .breadcrumbs,.security-inner-hero .breadcrumbs a{color:#b9d7f0}.security-inner-hero .eyebrow{color:#9cc6ef}.security-inner-hero .inner-visual{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.15)}.security-inner-hero .concept-panel{background:rgba(255,255,255,.07);border-color:#7ab7f1}.security-inner-hero .concept-panel strong{color:#fff}.security-principle{border-left:3px solid #7ab7f1;padding-left:18px}
.security-content{padding:62px 0 96px}.risk-chapter{display:grid;grid-template-columns:280px 1fr;gap:40px;padding:34px 0;border-bottom:1px solid #dce7f2}.risk-chapter header span{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:#718296}.risk-chapter h2{font-size:27px;color:#16283c}.risk-chapter p{text-indent:2em}
.academy-reading{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:52px;padding:58px 0 96px}.academy-chapter{padding:30px 0;border-bottom:1px solid #dce7f2}.academy-chapter small{color:#3f8fe5;font-weight:800}.academy-chapter h2{font-size:30px;color:#16283c}.academy-chapter p{text-indent:2em}
.service-content{padding:58px 0 96px}.service-facts{background:#fff;border-top:3px solid #3f8fe5;padding:28px}.service-facts strong{font-size:22px;color:#16283c}.service-chapter{display:grid;grid-template-columns:320px 1fr;gap:44px;padding:34px 0;border-bottom:1px solid #dce7f2}.service-chapter h2{font-size:28px;color:#16283c}.service-chapter h3{grid-column:2;color:#245f9e}.service-chapter p{grid-column:2;text-indent:2em}

/* English home equivalents */
.hero-links{margin-top:18px;font-size:14px}.hero-links a{color:#245f9e;font-weight:700}
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:0}.steps li{display:grid;grid-template-columns:48px 1fr;gap:14px;padding:26px;border-top:1px solid #dce7f2}.steps li:nth-child(odd){background:#f5f8fc}.steps b{color:#3f8fe5}
.web3-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:54px;align-items:start}.flow{display:grid;grid-template-columns:1fr 24px 1fr;gap:10px;align-items:center}.flow span{padding:15px 16px;background:#fff;border:1px solid #dce7f2}.flow i{text-align:center;color:#3f8fe5;font-style:normal}.flow i:nth-of-type(2n){transform:rotate(0deg)}
.security-band{background:#153f66;color:#dbeeff;padding:78px 0}.security-band h2,.security-band h3{color:#fff}.security-band .eyebrow{color:#9cc6ef}.security-band img{max-height:250px;margin:auto}.security-list{list-style:none;padding:12px 0 0;margin:0}.security-list li{padding:10px 0;border-bottom:1px solid rgba(255,255,255,.15)}.light-link{color:#fff;text-decoration:underline;text-underline-offset:4px}
.timeline{border-top:1px solid #dce7f2}.timeline article{display:grid;grid-template-columns:180px 1fr 1.2fr;gap:24px;padding:24px 0;border-bottom:1px solid #dce7f2}.timeline article span{color:#718296;font-size:13px}.timeline article h3{margin:0;color:#16283c}.timeline article p{margin:0}
.download-cta{padding:76px 0}.download-cta>.wrap{background:#245f9e;color:#fff;padding:48px;display:flex;gap:42px;align-items:center;justify-content:space-between;border-radius:14px}.download-cta h2{color:#fff}.download-cta .eyebrow{color:#b9d7f0}.download-cta .download-btn{background:#fff;color:#245f9e}
.faq-home{display:grid;grid-template-columns:.7fr 1.3fr;gap:42px}.faq-home .faq-list details{border-bottom:1px solid #dce7f2;padding:14px 0}.faq-home summary{cursor:pointer;font-weight:700;color:#16283c}
@media(max-width:900px){
 .product-chapter,.risk-chapter,.service-chapter{grid-template-columns:1fr}.service-chapter h3,.service-chapter p{grid-column:1}.academy-reading{grid-template-columns:1fr}.steps{grid-template-columns:1fr 1fr}.web3-layout,.faq-home{grid-template-columns:1fr}.timeline article{grid-template-columns:1fr}.flow{grid-template-columns:1fr}.flow i{transform:rotate(0deg)}
}
@media(max-width:560px){
 .product-chapter,.tutorial-step{grid-template-columns:1fr}.steps{grid-template-columns:1fr}.download-cta>.wrap{display:block;padding:34px 24px}.download-cta .download-btn{margin-top:18px}.product-story,.tutorial-shell,.security-content,.service-content{padding-bottom:72px}
}

@media(min-width:901px){
  .journey article:nth-child(even){margin-top:26px}
  .steps li:nth-child(even){transform:translateY(18px)}
}
@media(max-width:900px){
  .journey article:nth-child(even){margin-top:0}
  .steps li:nth-child(even){transform:none}
}