@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Inter:wght@400;500;600;700&display=swap');

:root {
  color-scheme: dark;
  --bg: #090c10;
  --panel: #0f141b;
  --panel-2: #121922;
  --panel-3: #171f2a;
  --line: #25303d;
  --line-soft: #1a232e;
  --text: #eef4f7;
  --muted: #8996a5;
  --faint: #596675;
  --accent: #55e6a5;
  --accent-strong: #2bd98c;
  --accent-soft: rgba(85, 230, 165, .1);
  --blue: #61a9ff;
  --orange: #ffb86a;
  --red: #ff6b78;
  --mono: 'DM Mono', ui-monospace, SFMono-Regular, Consolas, monospace;
  --sans: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 14px/1.65 var(--sans); }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; cursor: pointer; }
code, pre, kbd { font-family: var(--mono); }
code { color: var(--accent); }
p, h1, h2, h3 { margin: 0; }

.guide-header { height: 68px; padding: 0 28px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line-soft); background: rgba(9, 12, 16, .86); backdrop-filter: blur(18px); position: sticky; top: 0; z-index: 20; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand > span:last-child { display: flex; flex-direction: column; line-height: 1.2; }
.brand strong { font-size: 15px; }.brand small { margin-top: 3px; color: var(--muted); font: 500 8px var(--mono); letter-spacing: .18em; }
.brand-mark { width: 34px; height: 34px; border: 1px solid rgba(85,230,165,.55); border-radius: 9px; display: grid; place-items: center; position: relative; background: var(--accent-soft); }
.brand-mark i { position: absolute; width: 4px; height: 4px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent); }.brand-mark i:nth-child(1) { transform: translate(-7px,-4px); }.brand-mark i:nth-child(2) { transform: translate(7px,4px); }.brand-mark i:nth-child(3) { width: 13px; height: 1px; border-radius: 0; transform: rotate(29deg); }
.guide-header nav { display: flex; align-items: center; gap: 16px; }.text-link { color: var(--muted); font-size: 11px; }.text-link:hover { color: var(--text); }
.primary-link, .secondary-link { min-height: 34px; padding: 0 14px; display: inline-flex; align-items: center; justify-content: center; gap: 18px; border-radius: 8px; font-size: 11px; font-weight: 650; }
.primary-link { background: var(--accent); color: #06160f; }.primary-link:hover { background: var(--accent-strong); }.primary-link.large { min-height: 43px; padding: 0 19px; font-size: 12px; }.secondary-link { border: 1px solid var(--line); background: var(--panel); color: var(--muted); }.secondary-link:hover { border-color: var(--faint); color: var(--text); }

.guide-layout { width: min(1460px, 100%); margin: 0 auto; display: grid; grid-template-columns: 245px minmax(0, 1fr); align-items: start; }
.toc { height: calc(100vh - 68px); padding: 34px 23px 24px; position: sticky; top: 68px; border-right: 1px solid var(--line-soft); display: flex; flex-direction: column; }
.toc-heading { padding: 0 11px 20px; display: flex; flex-direction: column; gap: 5px; }.toc-heading span, .eyebrow { color: var(--accent); font: 500 9px var(--mono); letter-spacing: .18em; }.toc-heading strong { font-size: 16px; }
.toc nav { display: grid; gap: 3px; }.toc nav a { min-height: 39px; padding: 0 11px; display: flex; align-items: center; gap: 11px; border-radius: 7px; color: var(--muted); font-size: 11px; transition: .16s ease; }.toc nav a i { color: var(--faint); font: normal 8px var(--mono); }.toc nav a:hover { color: var(--text); background: var(--panel); }.toc nav a.active { color: var(--accent); background: var(--accent-soft); }.toc nav a.active i { color: var(--accent); }
.toc-help { margin-top: auto; padding: 13px; border: 1px solid var(--line-soft); border-radius: 9px; background: var(--panel); display: flex; flex-direction: column; gap: 5px; }.toc-help span { color: var(--faint); font-size: 9px; }.toc-help a { color: var(--accent); font-size: 10px; font-weight: 600; }.toc-help b { float: right; }
.guide-content { min-width: 0; padding: 0 54px 80px; }

.hero { min-height: 570px; padding: 74px 0 64px; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(360px, .8fr); align-items: center; gap: 70px; border-bottom: 1px solid var(--line-soft); position: relative; }
.hero::before { content: ''; position: absolute; width: 440px; height: 440px; left: 10%; top: 5%; background: radial-gradient(circle, rgba(85,230,165,.08), transparent 68%); pointer-events: none; }
.hero h1 { margin: 19px 0 20px; font-size: clamp(38px, 4.2vw, 66px); line-height: 1.06; letter-spacing: -.055em; }.hero h1 em { color: var(--accent); font-style: normal; }.hero-copy > p { max-width: 610px; color: var(--muted); font-size: 14px; line-height: 1.85; }.hero-actions { margin-top: 29px; display: flex; gap: 10px; }
.connection-demo { padding: 17px; border: 1px solid var(--line); border-radius: 15px; background: linear-gradient(145deg, var(--panel-2), var(--panel)); box-shadow: 0 30px 80px rgba(0,0,0,.28); position: relative; overflow: hidden; }.connection-demo::before { content: ''; position: absolute; inset: 0; opacity: .32; background-image: linear-gradient(var(--line-soft) 1px, transparent 1px), linear-gradient(90deg,var(--line-soft) 1px,transparent 1px); background-size: 25px 25px; }.connection-demo > * { position: relative; }.demo-top { padding: 1px 2px 14px; display: flex; align-items: center; justify-content: space-between; color: var(--faint); font: 8px var(--mono); letter-spacing: .16em; }.demo-top i { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 9px var(--accent); }
.flow-node { padding: 16px; display: flex; align-items: center; gap: 13px; border: 1px solid var(--line); border-radius: 10px; background: rgba(15,20,27,.9); }.flow-node > span { width: 28px; height: 28px; display: grid; place-items: center; border-radius: 7px; background: var(--accent-soft); color: var(--accent); font: 500 9px var(--mono); }.flow-node div { display: flex; flex-direction: column; gap: 2px; }.flow-node small { color: var(--faint); font-size: 8px; }.flow-node strong { font: 500 11px var(--mono); }.flow-node.server > span { color: var(--blue); background: rgba(97,169,255,.1); }
.flow-line { height: 64px; display: grid; place-items: center; position: relative; }.flow-line i { height: 100%; width: 1px; background: linear-gradient(var(--accent),var(--blue)); }.flow-line em { position: absolute; padding: 3px 7px; border: 1px solid var(--line); border-radius: 5px; background: var(--panel); color: var(--muted); font: normal 8px var(--mono); }.demo-status { margin-top: 14px; padding: 10px; display: flex; align-items: center; gap: 8px; border-radius: 7px; background: var(--accent-soft); color: var(--muted); font-size: 8px; }.demo-status i { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }

.doc-section { padding: 72px 0; border-bottom: 1px solid var(--line-soft); }.section-intro { margin-bottom: 34px; display: flex; align-items: flex-start; gap: 16px; }.section-number { min-width: 32px; padding-top: 4px; color: var(--accent); font: 500 9px var(--mono); letter-spacing: .12em; }.section-intro h2 { font-size: 29px; line-height: 1.2; letter-spacing: -.035em; }.section-intro p { margin-top: 7px; color: var(--muted); font-size: 11px; }
.steps { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }.steps article { min-height: 190px; padding: 18px; border: 1px solid var(--line-soft); border-radius: 11px; background: var(--panel); position: relative; }.steps article > span { position: absolute; right: 15px; color: var(--line); font: 500 29px var(--mono); }.step-icon { width: 38px; height: 38px; margin-bottom: 29px; display: grid; place-items: center; border-radius: 9px; color: var(--accent); background: var(--accent-soft); font: 16px var(--mono); }.steps h3 { font-size: 13px; }.steps p { margin-top: 7px; color: var(--muted); font-size: 10px; }
.callout { margin-top: 19px; padding: 14px 16px; display: flex; gap: 12px; border: 1px solid var(--line); border-radius: 9px; background: var(--panel); }.callout > span { flex: 0 0 21px; width: 21px; height: 21px; display: grid; place-items: center; border: 1px solid currentColor; border-radius: 50%; font: 500 10px var(--mono); }.callout strong { font-size: 10px; }.callout p { margin-top: 2px; color: var(--muted); font-size: 9px; }.callout.success { color: var(--accent); border-color: rgba(85,230,165,.25); background: var(--accent-soft); }.callout.warning { color: var(--orange); border-color: rgba(255,184,106,.28); background: rgba(255,184,106,.055); }.callout.neutral { color: var(--blue); }.callout a { color: var(--accent); text-decoration: underline; }
.feature-split { display: grid; grid-template-columns: 1fr 390px; gap: 32px; align-items: center; }.feature-split h3, .subheading { margin-bottom: 18px; font-size: 13px; }.instruction-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 16px; }.instruction-list li { display: flex; gap: 12px; }.instruction-list li > span { width: 24px; height: 24px; flex: 0 0 24px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 6px; color: var(--accent); font: 8px var(--mono); }.instruction-list strong { font-size: 11px; }.instruction-list p { margin-top: 3px; color: var(--muted); font-size: 9px; }
.mock-panel { padding: 19px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }.mock-label { margin-bottom: 7px; color: var(--muted); font-size: 9px; }.mock-input { height: 41px; display: flex; align-items: center; border: 1px solid var(--line); border-radius: 8px; background: var(--panel-2); overflow: hidden; }.mock-input span { height: 100%; padding: 0 10px; display: grid; place-items: center; border-right: 1px solid var(--line); color: var(--accent); background: var(--accent-soft); font: 8px var(--mono); }.mock-input code { padding: 0 11px; color: var(--text); font-size: 9px; }.mock-panel button { width: 100%; height: 38px; margin-top: 9px; border: 0; border-radius: 8px; background: var(--accent); color: #06160f; font-size: 10px; font-weight: 650; }.mock-panel button i { display: inline-block; width: 5px; height: 5px; margin-right: 6px; border-radius: 50%; background: #06160f; }.mock-facts { margin-top: 15px; padding-top: 13px; display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid var(--line-soft); }.mock-facts span { color: var(--faint); font-size: 7px; }.mock-facts strong { margin-top: 4px; display: block; color: var(--accent); font: 500 8px var(--mono); }.mock-facts span + span { padding-left: 10px; border-left: 1px solid var(--line-soft); }
.subheading { margin-top: 34px; }.definition-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 9px; }.definition-grid article { padding: 14px; border: 1px solid var(--line-soft); border-radius: 8px; background: var(--panel); }.definition-grid strong { font-size: 10px; }.definition-grid p { margin-top: 4px; color: var(--muted); font-size: 9px; }
.format-table { border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }.format-row { min-height: 49px; padding: 0 16px; display: grid; grid-template-columns: 100px minmax(0,1fr) minmax(0,1fr); align-items: center; gap: 12px; border-bottom: 1px solid var(--line-soft); background: var(--panel); font-size: 10px; }.format-row:last-child { border: 0; }.format-row.header { min-height: 38px; color: var(--faint); background: var(--panel-2); font-size: 8px; }.format-row strong { color: var(--accent); font: 500 9px var(--mono); }.format-row code { color: var(--text); font-size: 9px; }.format-row > span:last-child { color: var(--muted); }
.two-col-cards { margin-top: 18px; display: grid; grid-template-columns: repeat(2,1fr); gap: 10px; }.two-col-cards article { padding: 16px; display: flex; gap: 13px; border: 1px solid var(--line-soft); border-radius: 9px; }.card-icon { width: 34px; height: 34px; flex: 0 0 34px; display: grid; place-items: center; border-radius: 8px; background: var(--accent-soft); color: var(--accent); font: 11px var(--mono); }.two-col-cards h3 { font-size: 11px; }.two-col-cards p { margin-top: 4px; color: var(--muted); font-size: 9px; }
.message-demo { border: 1px solid var(--line); border-radius: 11px; background: var(--panel); overflow: hidden; }.message-toolbar { min-height: 47px; padding: 8px 13px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--line-soft); }.message-toolbar div { display: flex; align-items: center; gap: 4px; }.message-toolbar div:first-child > * { padding: 5px 8px; border-radius: 5px; color: var(--muted); font-size: 8px; font-weight: 400; }.message-toolbar div:first-child b { color: var(--text); background: var(--panel-3); }.message-toolbar div:last-child { color: var(--faint); font-size: 8px; }.message-toolbar div:last-child strong { padding: 5px 7px; border-radius: 5px; background: var(--panel-3); color: var(--text); font-size: 8px; }
.demo-message { min-height: 94px; padding: 12px 15px; display: grid; grid-template-columns: 20px auto auto auto 1fr auto; align-items: start; gap: 8px; border-bottom: 1px solid var(--line-soft); font-size: 8px; }.demo-message:last-child { border: 0; }.demo-message > i { width: 18px; height: 18px; display: grid; place-items: center; border-radius: 5px; background: var(--accent-soft); color: var(--accent); font-style: normal; }.demo-message > strong { padding-top: 2px; color: var(--accent); }.demo-message time,.demo-message small { padding-top: 2px; color: var(--faint); font: 7px var(--mono); }.demo-message > em { padding-top: 2px; color: var(--muted); font-style: normal; }.demo-message pre { grid-column: 2 / 6; margin: -1px 0 0; color: var(--text); font: 8px/1.65 var(--mono); }.demo-message pre b { color: var(--blue); }.demo-message pre q { color: var(--accent); }.demo-message.collapsed { min-height: 44px; align-items: center; }.demo-message.collapsed code { min-width: 0; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }.message-features { margin-top: 12px; grid-template-columns: repeat(3,1fr); }
.three-col-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 11px; }.three-col-cards article { min-height: 145px; padding: 17px; border: 1px solid var(--line-soft); border-radius: 10px; background: var(--panel); }.three-col-cards article > span { color: var(--accent); font: 500 8px var(--mono); }.three-col-cards h3 { margin-top: 24px; font-size: 12px; }.three-col-cards p { margin-top: 7px; color: var(--muted); font-size: 9px; }
.error-card { padding: 16px; border: 1px solid rgba(255,107,120,.32); border-radius: 10px; background: rgba(255,107,120,.055); }.error-title { margin-bottom: 9px; display: flex; align-items: center; gap: 8px; color: var(--red); font: 500 8px var(--mono); letter-spacing: .1em; }.error-title i { width: 6px; height: 6px; border-radius: 50%; background: var(--red); box-shadow: 0 0 7px var(--red); }.error-card > code { color: #ff9ca6; font-size: 9px; line-height: 1.7; }.lead { margin: 20px 0; color: var(--muted); font-size: 11px; }.protocol-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; }.protocol-grid article { padding: 13px; display: grid; grid-template-columns: auto 1fr; gap: 4px 9px; border: 1px solid var(--line-soft); border-radius: 8px; background: var(--panel); }.protocol-grid article > span { grid-row: 1 / 4; width: 22px; height: 22px; display: grid; place-items: center; border: 1px solid currentColor; border-radius: 50%; font: 9px var(--mono); }.protocol-grid code { font-size: 8px; }.protocol-grid i { display: none; }.protocol-grid strong { color: var(--muted); font-size: 8px; }.protocol-grid .ok { color: var(--accent); }.protocol-grid .bad { color: var(--red); }.code-block { border: 1px solid var(--line); border-radius: 9px; overflow: hidden; background: #080b0f; }.code-block header { height: 35px; padding: 0 13px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line-soft); color: var(--faint); font: 8px var(--mono); }.code-block button { border: 0; background: transparent; color: var(--muted); font-size: 8px; }.code-block button:hover { color: var(--accent); }.code-block pre { margin: 0; padding: 16px; color: var(--text); font: 9px/1.7 var(--mono); }.code-block b { color: var(--blue); }.code-block q { color: var(--accent); }.deployment > p:last-of-type { margin-top: 13px; color: var(--muted); font-size: 10px; }
.shortcut-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 8px; }.shortcut-grid article { min-height: 54px; padding: 10px 13px; display: flex; align-items: center; justify-content: space-between; border: 1px solid var(--line-soft); border-radius: 8px; background: var(--panel); }.shortcut-grid article > span { color: var(--muted); font-size: 9px; }.shortcut-grid div { display: flex; align-items: center; gap: 4px; }.shortcut-grid kbd { padding: 3px 6px; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px; background: var(--panel-2); color: var(--text); font: 8px var(--mono); }.shortcut-grid i,.shortcut-grid b { color: var(--faint); font-size: 8px; font-style: normal; font-weight: 400; }
.faq-list { border-top: 1px solid var(--line); }.faq-list details { border-bottom: 1px solid var(--line); }.faq-list summary { min-height: 57px; display: flex; align-items: center; justify-content: space-between; list-style: none; cursor: pointer; font-size: 11px; font-weight: 600; }.faq-list summary::-webkit-details-marker { display: none; }.faq-list summary i { color: var(--faint); font-size: 16px; font-style: normal; transition: .15s; }.faq-list details[open] summary i { color: var(--accent); transform: rotate(45deg); }.faq-list details p { max-width: 850px; padding: 0 32px 18px 0; color: var(--muted); font-size: 10px; }
.guide-cta { margin-top: 75px; padding: 54px 24px; border: 1px solid var(--line); border-radius: 14px; background: radial-gradient(circle at 50% 100%,rgba(85,230,165,.12),transparent 58%),var(--panel); text-align: center; }.guide-cta h2 { margin-top: 12px; font-size: 28px; letter-spacing: -.035em; }.guide-cta p { margin: 8px 0 22px; color: var(--muted); font-size: 10px; }
.guide-footer { height: 42px; padding: 0 28px; display: flex; align-items: center; gap: 20px; border-top: 1px solid var(--line-soft); color: var(--faint); font: 8px var(--mono); }.guide-footer span:nth-child(2) { margin-left: auto; }.guide-footer a:hover { color: var(--accent); }

::-webkit-scrollbar { width: 7px; height: 7px; }::-webkit-scrollbar-track { background: transparent; }::-webkit-scrollbar-thumb { background: var(--line); border-radius: 999px; }

@media (max-width: 1050px) {
  .guide-layout { grid-template-columns: 210px minmax(0,1fr); }.guide-content { padding-left: 34px; padding-right: 34px; }.hero { grid-template-columns: 1fr; gap: 34px; }.connection-demo { max-width: 540px; }.feature-split { grid-template-columns: 1fr; }.mock-panel { max-width: 520px; }.protocol-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  html { scroll-padding-top: 66px; }.guide-header { height: 60px; padding: 0 14px; }.guide-header .text-link { display: none; }.guide-header .primary-link { min-height: 32px; padding: 0 11px; }.guide-layout { display: block; }.toc { display: none; }.guide-content { padding: 0 16px 55px; }.hero { min-height: auto; padding: 58px 0 48px; }.hero h1 { font-size: 40px; }.hero-copy > p { font-size: 12px; }.hero-actions { flex-direction: column; align-items: stretch; }.connection-demo { width: 100%; }.doc-section { padding: 50px 0; }.section-intro h2 { font-size: 24px; }.steps,.definition-grid,.two-col-cards,.three-col-cards,.message-features,.shortcut-grid { grid-template-columns: 1fr; }.steps article { min-height: 150px; }.step-icon { margin-bottom: 20px; }.format-row { padding: 10px 12px; grid-template-columns: 55px 1fr; }.format-row > span:last-child { grid-column: 2; }.format-row.header span:last-child { display: none; }.message-toolbar { align-items: flex-start; gap: 8px; }.demo-message { grid-template-columns: 20px auto auto 1fr auto; }.demo-message small { display: none; }.demo-message code { grid-column: 2 / 5; }.protocol-grid { grid-template-columns: 1fr; }.guide-cta { margin-top: 45px; padding: 42px 18px; }.guide-footer { padding: 0 14px; }.guide-footer span:nth-child(2) { display: none; }.guide-footer a { margin-left: auto; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *,*::before,*::after { transition-duration: .01ms !important; } }