
:root{--blue:#3f8fe5;--blue2:#245f9e;--deep:#153f66;--title:#16283c;--text:#43566a;--muted:#718296;--line:#dce7f2;--soft:#f5f8fc;--soft2:#edf4fb;--foot:#123958;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}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}a{color:var(--blue2);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto}.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;padding:9px;z-index:9999}.safety{background:var(--soft2);border-bottom:1px solid var(--line);text-align:center;padding:9px 18px;font-size:13px}.header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.headin{max-width:var(--max);height:72px;margin:auto;padding:0 22px;display:flex;align-items:center;gap:20px}.brand img,.mtop img,.footer img{width:142px;display:block}.desktop{display:flex;flex:1;height:100%;align-items:center}.ng{height:100%;display:flex;align-items:center}.nt{border:0;background:transparent;font:inherit;font-weight:700;color:var(--title);padding:12px 10px;min-height:44px;cursor:pointer}.mega{position:absolute;left:50%;top:72px;transform:translateX(-50%);width:min(1120px,calc(100vw - 44px));background:#fff;border:1px solid var(--line);box-shadow:0 18px 42px rgba(20,55,90,.10);padding:28px;display:grid;grid-template-columns:1.1fr 1fr .75fr;gap:30px}.mega[hidden]{display:none}.mega h2{color:var(--title);margin:.2em 0}.mlinks{display:grid;grid-template-columns:1fr 1fr;gap:5px 16px}.mlinks a{padding:9px 0;border-bottom:1px solid #eef3f8}.mnote{background:var(--soft);padding:18px}.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--blue2);font-weight:850}.ha{display:flex;align-items:center;gap:10px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:9px 17px;border-radius:10px;background:var(--blue2);color:#fff;font-weight:750}.btn:hover{text-decoration:none;background:#1b4e83}.menub,.closem{display:none;border:0;background:transparent;font-size:25px;min-width:44px;min-height:44px;color:var(--title)}.mobile{position:fixed;inset:0;background:#fff;z-index:2000;overflow:auto;padding:18px 22px}.mobile[hidden]{display:none}.mtop{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:14px}.mtop>div{display:flex;align-items:center;gap:12px}.mobile section{border-bottom:1px solid var(--line)}.acc{width:100%;border:0;background:#fff;min-height:52px;display:flex;justify-content:space-between;align-items:center;padding:0;font:inherit;font-weight:750;color:var(--title);font-size:17px}.mobile section div a{display:block;padding:10px 4px;min-height:44px}.mbot{display:grid;gap:10px;margin-top:20px}.hero{padding:72px 22px 62px;background:linear-gradient(180deg,#fff,#f8fbff)}.wrap,.heroin,.pageheroin,.content{max-width:var(--max);margin:auto}.heroin{display:grid;grid-template-columns:1.08fr .92fr;gap:46px;align-items:center}.hero h1{font-size:clamp(42px,5vw,70px);line-height:1.07;letter-spacing:-.04em;color:var(--title);margin:.2em 0}.sub{font-size:20px;color:var(--blue2);font-weight:750}.hero p{font-size:17px}.actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0}.textlink{display:inline-flex;align-items:center;min-height:46px;padding:8px}.tags{display:flex;flex-wrap:wrap;gap:8px}.tag{background:#eaf4ff;padding:6px 10px;border-radius:8px;font-size:13px}.visual{min-height:500px;background:var(--soft2);border:1px solid var(--line);display:flex;align-items:flex-end;justify-content:center;position:relative;overflow:hidden}.visual:before,.visual:after{content:"";position:absolute;border:1px solid rgba(63,143,229,.3);transform:rotate(18deg)}.visual:before{width:280px;height:280px;left:-70px;top:30px}.visual:after{width:170px;height:170px;right:-30px;bottom:45px}.visual img{max-height:475px;object-fit:contain;position:relative}.section{padding:72px 22px}.soft{background:var(--soft)}.deep{background:var(--deep);color:#dbeaf7}.deep h2,.deep h3{color:#fff}.stitle{max-width:760px;margin-bottom:32px}.stitle h2{color:var(--title);font-size:clamp(30px,3vw,46px);line-height:1.15;margin:.2em 0}.tasks{display:grid;grid-template-columns:1.15fr 1fr 1.1fr .95fr 1.2fr;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.task{padding:22px 18px;border-right:1px solid var(--line)}.task:last-child{border-right:0}.task b{font-size:12px;color:var(--blue2)}.task h3{color:var(--title);margin:.35em 0}.mosaic{display:grid;grid-template-columns:1.1fr .9fr .85fr;gap:18px}.mosaic article{border:1px solid var(--line);padding:26px;background:#fff}.mosaic article:first-child{grid-row:span 2;background:var(--soft2)}.mosaic article:nth-child(3){grid-column:span 2}.mosaic h3{color:var(--title);font-size:24px}.mosaic img{max-height:280px;object-fit:contain;width:100%}.netstage{display:grid;grid-template-columns:250px 1fr;gap:26px}.tabs{display:flex;flex-direction:column;gap:8px}.tab{min-height:48px;text-align:left;border:1px solid var(--line);background:#fff;padding:10px 13px;font:inherit;font-weight:700;color:var(--title)}.tab[aria-selected=true]{background:var(--deep);color:#fff}.panel{border:1px solid var(--line);padding:30px;display:grid;grid-template-columns:1fr .85fr;gap:30px;align-items:center}.panel[hidden]{display:none}.panel img{max-height:280px}.steps{display:grid}.step{display:grid;grid-template-columns:100px 1fr;gap:20px;padding:22px 0;border-bottom:1px solid var(--line)}.step:nth-child(even){grid-template-columns:1fr 100px;text-align:right}.step:nth-child(even) b{order:2}.step b{font-size:36px;color:#b8d2eb}.step h3{color:var(--title);margin:0}.web3flow,.securityband,.editorial{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px}.flow li{list-style:none;padding:13px 0;border-bottom:1px solid var(--line)}.notice{background:var(--soft2);border-left:4px solid var(--blue);padding:14px 18px;margin:20px 0}.securityband img{max-height:310px}.checks{display:grid;gap:9px}.checks div:before{content:"✓";display:inline-grid;place-items:center;width:25px;height:25px;border:1px solid #7eb8ec;margin-right:9px}.editorial{grid-template-columns:1.2fr .8fr}.feature{padding-right:36px;border-right:1px solid var(--line)}.feature h3{font-size:31px;line-height:1.2;color:var(--title)}.alist article{border-bottom:1px solid var(--line);padding:0 0 16px;margin-bottom:16px}.alist h3{margin:.2em 0;color:var(--title)}.twocol{display:grid;grid-template-columns:1fr 1fr;gap:20px}.twocol article{border-top:3px solid var(--blue);padding:26px;background:#fff}.updates{border-top:1px solid var(--line)}.update{display:grid;grid-template-columns:120px 1fr auto;gap:20px;padding:18px 0;border-bottom:1px solid var(--line)}.faq{border-top:1px solid var(--line)}.faqitem{border-bottom:1px solid var(--line)}.faqbtn{width:100%;border:0;background:transparent;display:flex;justify-content:space-between;align-items:center;min-height:58px;padding:10px 0;font:inherit;font-weight:750;color:var(--title);text-align:left}.faqans{padding-bottom:18px}.cta{display:flex;justify-content:space-between;gap:24px;align-items:center;background:var(--soft2);padding:36px}.crumb{max-width:var(--max);margin:26px auto 0;padding:0 22px;font-size:13px;color:var(--muted)}.pagehero{padding:52px 22px 34px}.pageheroin{display:grid;grid-template-columns:1fr .4fr;align-items:end;gap:40px}.pagehero h1{font-size:clamp(38px,5vw,60px);line-height:1.1;color:var(--title);margin:.15em 0}.content{padding:22px 22px 78px;display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:52px}.article section{padding:25px 0;border-bottom:1px solid var(--line)}.article h2{color:var(--title);font-size:30px;scroll-margin-top:100px}.article h3{color:var(--title)}.toc{position:sticky;top:105px;align-self:start;border-left:2px solid var(--line);padding-left:18px}.toc h2{font-size:14px;color:var(--title)}.toc a{display:block;color:var(--muted);font-size:14px;padding:5px 0}.toc a.active{color:var(--blue2);font-weight:750}.checklist{background:var(--soft);padding:20px;margin:20px 0}.guide{counter-reset:g}.gstep{counter-increment:g;position:relative;padding:20px 0 20px 70px;border-bottom:1px solid var(--line)}.gstep:before{content:counter(g,decimal-leading-zero);position:absolute;left:0;top:15px;font-size:30px;color:#a9cbea;font-weight:850}.principles,.productbox,.servicebox{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:20px 0}.principles div{background:var(--deep);color:#eef7ff;padding:18px}.productbox div,.servicebox article{background:var(--soft2);padding:18px}.footer{background:var(--foot);color:#bcd0e2;padding:54px 22px 20px}.fgrid{max-width:var(--max);margin:auto;display:grid;grid-template-columns:1.2fr .8fr .8fr .8fr;gap:38px}.footer h2{color:#fff;font-size:15px}.footer a{display:block;color:#dcebf7;padding:5px 0}.footer img{filter:brightness(0) invert(1)}.fbot{max-width:var(--max);margin:32px auto 0;padding-top:18px;border-top:1px solid rgba(255,255,255,.15);display:flex;justify-content:space-between;gap:20px;font-size:12px}.fbot a{color:#fff}@media(max-width:1040px){.desktop{display:none}.menub,.closem{display:inline-grid;place-items:center}.heroin,.pageheroin,.securityband,.editorial,.web3flow{grid-template-columns:1fr}.netstage{grid-template-columns:1fr}.tabs{flex-direction:row;overflow-x:auto}.tab{min-width:max-content}.content{grid-template-columns:1fr}.toc{position:static;order:-1;border:1px solid var(--line);padding:15px}.fgrid{grid-template-columns:1fr 1fr}.tasks{grid-template-columns:1fr 1fr}.task{border-bottom:1px solid var(--line)}.mosaic{grid-template-columns:1fr 1fr}.mosaic article:first-child{grid-row:auto}.mosaic article:nth-child(3){grid-column:auto}}@media(max-width:680px){.safety{text-align:left;font-size:12px}.headin{height:64px;padding:0 14px}.brand img{width:125px}.dtop{display:none}.hero{padding:48px 16px}.hero h1{font-size:40px}.visual{min-height:350px}.visual img{max-height:330px}.section{padding:52px 16px}.tasks,.mosaic,.twocol,.principles,.productbox,.servicebox{grid-template-columns:1fr}.task{border-right:0}.panel{grid-template-columns:1fr;padding:20px}.step,.step:nth-child(even){grid-template-columns:65px 1fr;text-align:left}.step:nth-child(even) b{order:0}.update{grid-template-columns:1fr}.cta{display:block;padding:24px}.cta .btn{margin-top:16px}.crumb,.pagehero,.content{padding-left:16px;padding-right:16px}.article h2{font-size:26px}.fgrid{grid-template-columns:1fr}.fbot{display:block}.fbot>*{display:block;margin:7px 0}.mobile{padding:14px 16px}}
