:root{--ink:#172137;--muted:#68758a;--blue:#2556ee;--line:#dfe5ee;--paper:#f7f8fb;--navy:#111b30;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none;scroll-behavior:smooth;scroll-padding-top:104px}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}button{font:inherit;background:none;border:0;color:inherit;cursor:pointer}h1,h2,h3,p{margin:0}p{line-height:1.85}h1,h2,h3{letter-spacing:-.04em}::selection{background:#d4dfff}a:focus-visible,button:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid #7f9fff;outline-offset:5px}.wrap{width:min(1240px,calc(100% - 80px));margin-inline:auto}.skip{position:fixed;z-index:100;top:-80px;left:20px;background:#fff;padding:15px;color:var(--blue)}.skip:focus{top:12px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.header{position:sticky;top:0;z-index:50;background:#f7f8fbef;backdrop-filter:blur(20px);border-bottom:1px solid #dfe5ee99}.header-row{height:82px;display:flex;align-items:center;justify-content:space-between;gap:35px}.brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}.brand-mark{width:35px;height:35px;border-radius:8px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:850;font-size:26px;letter-spacing:-.08em}.brand-name{font-size:21px;letter-spacing:.025em;font-weight:800;display:flex;align-items:center;gap:13px}.brand-name>span{font-size:17px;font-weight:500;color:#8390a6;padding-left:13px;border-left:1px solid #d7dfeb;letter-spacing:-.03em}.header 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1fr;gap:56px;align-items:center;padding-top:76px;padding-bottom:68px}.eyebrow{display:flex;align-items:center;gap:9px;color:var(--blue);font-size:10px;letter-spacing:.15em;font-weight:700}.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--blue)}.hero h1{font-size:60px;line-height:1.23;font-weight:720;margin:25px 0;letter-spacing:-.055em}.hero h1 span{color:var(--blue)}.hero-description{font-size:15px;color:#74829a;line-height:1.95}.hero-actions{display:flex;align-items:center;gap:13px;margin-top:31px}.hero-foot{display:flex;gap:22px;margin-top:25px;color:#8491a6;font-size:10px}.hero-foot span{display:flex;align-items:center;gap:8px}.hero-foot span::before{content:"";height:4px;width:4px;background:#9baed2;border-radius:1px}.gateway-panel{background:#fff;border:1px solid #d9e2f0;border-radius:12px;box-shadow:0 25px 60px 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b{font-size:9px;font-weight:400;color:#7890b2}.gateway-ledger>span:last-child{margin-left:auto;color:#8aa4d1}.gateway-note{font-size:8px;color:#99a7bc;margin-top:13px;line-height:1.8}.principle-strip{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:25px 0}.principle-strip>div{display:grid;grid-template-columns:32px 1fr;gap:5px 10px;padding-left:30px;border-left:1px solid var(--line)}.principle-strip>div:first-child{border:0;padding-left:0}.principle-strip>div>span{grid-row:1/3;font:9px ui-monospace,monospace;color:#9aabc4;padding-top:3px}.principle-strip b{font-size:13px;font-weight:550}.principle-strip small{font-size:10px;color:#8a9ab2}.section{padding:85px 0}.section-head{max-width:700px;margin-bottom:35px}.section-kicker{font-size:9px;color:var(--blue);font-weight:650;letter-spacing:.14em}.section-head h2,.routing-heading h2,.acceptance-heading h2{font-size:36px;line-height:1.4;margin:16px 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small{display:block;font-size:11px;color:#8b9bb4;line-height:1.9;margin-top:6px}.text-link{font-size:11px;color:var(--blue);display:inline-flex;gap:22px;align-items:center}.code-window{border-radius:11px;overflow:hidden;background:#111c31;border:1px solid #253750;box-shadow:0 20px 45px #243e6515;color:#c7d9f4}.code-header{display:flex;justify-content:space-between;align-items:center;padding:17px 20px;gap:16px;border-bottom:1px solid #2b394f}.code-tabs{display:flex;gap:23px}.code-tabs button{font-size:10px;color:#8296b8;padding:0;position:relative;min-height:24px}.code-tabs button[aria-selected=true]{color:#d9e6ff}.code-tabs button[aria-selected=true]::after{content:"";position:absolute;left:0;right:0;bottom:-18px;height:2px;background:#80a8ff}.copy-button{display:flex;align-items:center;gap:8px;color:#94abcc;font-size:10px;padding:4px 0}.code-endpoint{display:flex;align-items:center;gap:9px;margin:24px 23px 0}.code-endpoint>span{font:8px 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h2{font-size:34px;color:#f0f5ff;margin-bottom:0;font-weight:600}.acceptance-heading .section-kicker{color:#9db9f4}.acceptance-heading>p{font-size:12px;color:#8da5c6;line-height:1.9}.acceptance-controls{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:18px}.acceptance-controls>div{display:flex;gap:4px}.acceptance-controls button{font-size:10px;padding:10px 13px;color:#8aa2c5;border-radius:5px}.acceptance-controls button[aria-pressed=true]{color:#d5e3ff;background:#263c5e}.acceptance-controls .download-button{color:#adc7f5;padding-right:0;display:flex;gap:15px}.table-overflow{overflow:auto;border:1px solid #344763;border-radius:10px}table{width:100%;border-collapse:collapse;text-align:left;min-width:760px}th{background:#1d2e49;font-size:10px;font-weight:500;color:#7f98bd;padding:15px 23px;border-bottom:1px solid #344763}th:first-child{width:24%}th:nth-child(2){width:49%}th:last-child{width:27%}td{font-size:11px;line-height:1.95;color:#9ab0d0;padding:21px 23px;border-bottom:1px solid #2d405d;vertical-align:top}tr:last-child td{border-bottom:0}td b{color:#d2dff4;display:block;font-size:12px;font-weight:500}td small{color:#667fa6;display:block;font:7px ui-monospace,monospace;letter-spacing:.07em;margin-top:9px}td:last-child{color:#849cbf;font-size:10px}tr[hidden]{display:none}.acceptance-foot{display:flex;align-items:start;gap:30px;margin-top:18px}.acceptance-foot>span{font-size:9px;color:#6b85ad;white-space:nowrap;padding-top:3px}.acceptance-foot p{font-size:10px;line-height:1.9;color:#7f96b9}.section-head.compact{max-width:none}.section-head.compact h2{font-size:31px}.delivery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-top:37px}.delivery-grid article{border-top:1px solid #d7e1f1;padding-top:24px}.delivery-grid article>span{font:8px ui-monospace,monospace;color:#8b9fbf;letter-spacing:.06em}.delivery-grid h3{font-size:17px;font-weight:600;margin:20px 0 11px}.delivery-grid p{font-size:12px;color:#8b9ab0;line-height:1.9}.about-section{border-block:1px solid #e1e7f1;background:#edf1f8;padding:65px 0}.about-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:90px}.about-grid h2{font-size:34px;line-height:1.45;font-weight:600;margin-top:18px}.about-grid>div:last-child>p{font-size:13px;line-height:1.95;color:#6c809e}.about-grid .about-secondary{margin-top:17px;color:#8b9cb4!important;font-size:12px!important}.company-details{display:flex;flex-wrap:wrap;gap:12px 20px;margin-top:25px;border-top:1px solid #dce4f1;padding-top:20px;font-size:9px;color:#8a9fbb;line-height:1.8}.company-details a{color:#3567c5}.faq-layout{display:grid;grid-template-columns:1fr 1.5fr;gap:85px}.faq-layout h2{font-size:32px;line-height:1.45;margin-top:19px;font-weight:600}.faq-list details{border-bottom:1px solid #dce5f2;padding:22px 0}.faq-list details:first-child{padding-top:0}.faq-list summary{list-style:none;display:flex;justify-content:space-between;align-items:center;gap:25px;font-size:13px;cursor:pointer;line-height:1.7}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary span{font-size:21px;color:#96a8c3;flex-shrink:0}.faq-list details[open] summary span{transform:rotate(45deg)}.faq-list p{font-size:12px;line-height:1.95;color:#8a9bb4;margin-top:16px;padding-right:22px}.contact-section{background:#204bcb;color:white;padding:62px 0;position:relative;overflow:hidden}.contact-section::after{content:"";position:absolute;right:-130px;top:-220px;height:600px;width:600px;border:1px solid #ffffff12;border-radius:50%;pointer-events:none}.contact-label{font-size:9px;letter-spacing:.15em;color:#a9c3ff}.contact-grid h2{font-size:41px;line-height:1.4;font-weight:550;margin:21px 0 26px;letter-spacing:-.035em}.contact-bottom{display:flex;justify-content:space-between;align-items:end;gap:40px}.contact-bottom>p{font-size:12px;line-height:1.9;color:#bbceff}.contact-bottom>div{display:flex;align-items:center;gap:27px;position:relative;z-index:1}.email-button{font-size:11px;color:#bfd2ff;display:flex;gap:14px;align-items:center}.email-button:hover{color:white}.footer{display:flex;align-items:start;justify-content:space-between;gap:40px;padding:35px 0}.footer-brand .brand-mark{height:28px;width:28px;font-size:21px;border-radius:6px}.footer-brand .brand-name{font-size:17px}.footer-brand .brand-name>span{font-size:14px}.footer p{font-size:9px;color:#92a0b6;line-height:1.9;margin-top:17px}.footer-links{display:flex;gap:24px;align-items:center;padding-top:11px;color:#8a9bb3;font-size:10px}.footer-links button{font-size:10px;padding:0}.toast{position:fixed;bottom:25px;left:50%;transform:translate(-50%,15px);opacity:0;pointer-events:none;background:#132540;color:white;border-radius:8px;padding:14px 20px;box-shadow:0 10px 40px #0002;z-index:100;font-size:12px;max-width:calc(100vw - 36px);transition:.18s}.toast.show{opacity:1;transform:translate(-50%,0)}dialog{width:min(520px,calc(100% - 36px));border:1px solid #dce5f1;border-radius:13px;box-shadow:0 30px 90px #10203940;padding:32px;color:var(--ink)}dialog::backdrop{background:#101d3866;backdrop-filter:blur(3px)}dialog h2{font-size:23px;margin:7px 0 20px}dialog p{font-size:12px;line-height:1.95;color:#7b8ea8;margin:0 0 16px}dialog .button{margin-top:7px;font-size:12px}.dialog-close{position:absolute;right:15px;top:9px;font-size:27px;color:#91a4bf}
@media(min-width:1550px){.hero{padding-top:95px;padding-bottom:90px}.hero h1{font-size:66px}.section{padding:95px 0}}
@media(max-width:1150px){.wrap{width:calc(100% - 48px)}.header-row{gap:20px}.header nav{gap:20px;font-size:11px}.brand-name{font-size:19px;gap:10px}.brand-name>span{font-size:16px;padding-left:10px}.hero{gap:32px}.hero h1{font-size:53px}.hero-description{font-size:14px}.hero-actions .button{gap:20px;font-size:12px;padding:14px 18px}.gateway-panel{padding:20px}.request-row{padding:13px 10px;gap:8px}.request-row code{font-size:10px}.request-label{font-size:8px}.gateway-core{padding:20px}.channel-grid{gap:7px}.channel-grid>div{padding:13px 9px}.gateway-ledger{gap:8px}.gateway-ledger b{font-size:8px}.capability-grid article{padding:25px}.protocol-layout{gap:40px}.protocol-copy h2{font-size:32px}.routing-workspace{grid-template-columns:280px 1fr}.route-panel{padding:27px}.routing-menu{padding:14px}.routing-menu button{padding:20px 14px}.route-stages{gap:8px}.route-stages>span{padding:12px 9px;font-size:9px}.about-grid{gap:60px}.faq-layout{gap:65px}.contact-bottom>div{gap:20px}.contact-grid h2{font-size:38px}}
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@media(max-width:680px){:root{scroll-padding-top:88px}.wrap{width:calc(100% - 36px)}.header-row{height:68px;position:relative;gap:10px}.brand-name{font-size:18px;gap:10px}.brand-name>span{font-size:15px;padding-left:10px}.brand-mark{width:31px;height:31px}.header-right{gap:12px}.menu-button{display:block;color:#607594}.header nav{display:none;position:absolute;top:61px;left:0;right:0;background:#fff;border:1px solid #dfe7f3;border-radius:9px;box-shadow:0 10px 30px #20365d15;flex-direction:column;align-items:stretch;padding:13px;gap:0;font-size:12px}.header nav.open{display:flex}.header nav a{padding:12px}.button.small{font-size:10px;gap:14px;padding:9px 12px;min-height:34px}.hero{grid-template-columns:1fr;gap:37px;padding-top:37px;padding-bottom:35px}.eyebrow{font-size:9px}.hero h1{font-size:48px;margin:21px 0 23px}.hero-description{font-size:13px;line-height:1.95}.wide-only{display:none}.hero-actions{gap:10px;margin-top:26px}.hero-actions .button{font-size:11px;gap:22px;padding:13px 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0;gap:16px;grid-template-columns:repeat(3,1fr)}.principle-strip>div{display:block;padding-left:0;border:0}.principle-strip>div>span{font-size:8px;display:block;margin-bottom:9px;padding:0}.principle-strip b{font-size:11px;display:block}.principle-strip small{font-size:9px;display:block;line-height:1.7;margin-top:7px}.section{padding:46px 0}.section-kicker{font-size:8px}.section-head{margin-bottom:26px}.section-head h2,.routing-heading h2{font-size:30px;line-height:1.4;margin:15px 0}.section-head p{font-size:11px}.capability-grid{grid-template-columns:1fr}.capability-grid article{padding:25px;border-right:0!important;border-bottom:1px solid var(--line)!important}.capability-grid article:last-child{border-bottom:0!important}.capability-grid h3{font-size:20px;margin:18px 0 12px}.capability-grid p{font-size:12px;line-height:1.95}.tags{margin-top:19px}.tags span{font-size:9px;padding:5px 7px}.scope-note{display:block;margin-top:20px}.scope-note>span{display:inline-block;font-size:9px}.scope-note p{font-size:10px;margin-top:10px}.protocol-section{padding:46px 0}.protocol-layout{grid-template-columns:1fr;gap:30px}.protocol-copy h2{font-size:30px;margin:16px 0}.protocol-copy>p{font-size:12px}.protocol-points{gap:21px;margin:25px 0}.protocol-points strong{font-size:13px}.protocol-points small{font-size:11px}.text-link{font-size:11px}.code-header{padding:16px 18px;gap:12px}.code-tabs{gap:20px}.code-tabs button{font-size:10px}.code-tabs button[aria-selected=true]::after{bottom:-17px}.copy-button{font-size:10px}.code-endpoint{margin:22px 18px 0;gap:9px}.code-endpoint code{font-size:10px}.code-window pre{font-size:10px;line-height:2;padding:22px 18px;min-height:335px}.code-note{font-size:10px;margin-top:16px}.routing-heading{display:block;margin-bottom:25px}.routing-heading>p{font-size:11px;line-height:1.95;margin-top:18px}.routing-workspace{grid-template-columns:1fr}.routing-menu{display:flex;padding:10px;border-right:0;border-bottom:1px solid var(--line);gap:6px}.routing-menu button{display:block;padding:13px 10px;min-height:80px;flex:1}.routing-menu button>span{display:block;font-size:7px;margin:0 0 8px}.routing-menu b{font-size:11px;white-space:nowrap}.routing-menu small,.routing-menu i{display:none}.route-panel{padding:23px}.route-panel h3{font-size:23px;margin:18px 0 13px}.route-panel>p{font-size:12px}.route-stages{gap:5px;flex-wrap:wrap;margin:23px 0}.route-stages>span{font-size:9px;padding:11px 8px;flex-basis:40%}.route-stages i{font-size:10px}.route-stages i:nth-of-type(2){display:none}.route-panel ul{font-size:11px;line-height:2}.route-panel-top{font-size:7px}.acceptance-section{padding:46px 0}.acceptance-heading{display:block;margin-bottom:26px}.acceptance-heading h2{font-size:30px;margin:16px 0}.acceptance-heading>p{font-size:11px;line-height:1.95}.acceptance-controls{display:block;margin-bottom:17px}.acceptance-controls>div{gap:4px;flex-wrap:wrap}.acceptance-controls button{font-size:10px;padding:10px 12px}.acceptance-controls .download-button{margin-top:13px;padding-left:0;font-size:10px}.table-overflow{margin-inline:-1px;border-radius:8px}table{min-width:730px}th{font-size:10px;padding:14px 19px}td{padding:18px 19px;font-size:11px}td b{font-size:12px}td:last-child{font-size:10px}.acceptance-foot{display:block;margin-top:16px}.acceptance-foot>span{font-size:9px}.acceptance-foot p{font-size:10px;margin-top:10px}.delivery-grid{grid-template-columns:1fr 1fr;gap:28px 22px;margin-top:29px}.section-head.compact h2{font-size:28px}.delivery-grid article{padding-top:19px}.delivery-grid article>span{font-size:8px}.delivery-grid h3{font-size:16px;margin:17px 0 11px}.delivery-grid p{font-size:11px}.about-section{padding:45px 0}.about-grid{grid-template-columns:1fr;gap:25px}.about-grid h2{font-size:30px;margin-top:16px}.about-grid>div:last-child>p{font-size:12px}.about-grid .about-secondary{font-size:12px!important;margin-top:17px}.company-details{font-size:9px;gap:10px 17px;margin-top:22px}.faq-layout{grid-template-columns:1fr;gap:27px}.faq-layout h2{font-size:29px;margin-top:16px}.faq-list summary{font-size:12px;gap:20px}.faq-list p{font-size:11px;padding-right:15px}.faq-list details{padding:20px 0}.contact-section{padding:46px 0}.contact-label{font-size:8px;letter-spacing:.1em}.contact-grid h2{font-size:30px;margin:20px 0 23px}.contact-bottom{display:block}.contact-bottom>p{font-size:11px}.contact-bottom>div{margin-top:26px;gap:18px;align-items:start}.button.light{min-width:200px;font-size:12px;padding:13px 20px}.email-button{font-size:11px}.footer{display:block;padding:29px 0}.footer-links{margin-top:25px;justify-content:space-between;gap:15px;padding:0;font-size:10px}.footer-links button{font-size:10px}.footer p{font-size:9px;margin-top:15px}dialog{padding:27px}dialog h2{font-size:22px}dialog p{font-size:12px}.toast{font-size:11px;line-height:1.7}}
@media(max-width:375px){.brand-name>span{display:none}.hero h1{font-size:43px}.hero-actions .button{padding:12px 14px;gap:15px;font-size:10px}.gateway-panel{padding:17px}.request-label{display:none}.gateway-ledger{gap:7px}.gateway-ledger b{font-size:7px}.channel-grid>div{padding:12px 8px}.channel-grid small{font-size:7px}.contact-grid h2{font-size:27px}.code-tabs{gap:14px}.code-tabs button{font-size:9px}}
@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}
@media print{.header{position:static}.header-right,.toast,dialog,.copy-button,.download-button,.footer-links{display:none!important}.wrap{width:100%}.hero,.section{padding-block:30px}.capability-grid article,.code-window,.routing-workspace,.delivery-grid article{break-inside:avoid}.protocol-section,.acceptance-section,.contact-section{-webkit-print-color-adjust:exact;print-color-adjust:exact}.table-overflow{overflow:visible}table{min-width:0}.faq-list details p{display:block}}