:root { color-scheme: dark; --bg: #000; --panel: #111; --ink: #f5f5f5; --muted: #a7abb3; --accent: #3b82f6; --line: #ffffff1a; --mono: "Roboto Mono", ui-monospace, monospace; }
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body { background: var(--bg); color: var(--ink); font: 400 16px/1.65 "Inter", system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
[hidden] { display: none !important; }
::selection { background: #1d4ed8; color: #fff; }
a { color: #a9ceff; text-decoration: none; } a:hover { color: #fff; }
:focus-visible { outline: 2px solid #78b2fa; outline-offset: 4px; }
button, input, select { font: inherit; } button, summary { cursor: pointer; }
.wrap { width: min(100%, 1240px); margin-inline: auto; padding-inline: clamp(20px, 4vw, 48px); }
.site-header { position: sticky; top: 0; z-index: 10; background: #000; border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; gap: 28px; min-height: 76px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: #fff; font-size: 1.25rem; font-weight: 600; letter-spacing: .05em; }
.brand span { font: .72rem var(--mono); color: var(--muted); border-left: 1px solid var(--line); padding-left: 12px; margin-left: 3px; }
.nav-links { display: flex; gap: 24px; margin-left: auto; font-size: .83rem; }
.nav-links a { color: #c2c6cf; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 18px; min-height: 48px; padding: 12px 22px; border: 1px solid #fff; border-radius: 5px; background: #fff; color: #000; font-size: .88rem; font-weight: 550; text-align: center; }
.button:hover { color: #000; background: #dfe6f1; border-color: #dfe6f1; }
.button.secondary { color: #eee; background: transparent; border-color: #ffffff30; }
.button.secondary:hover { background: #17191e; }
.button.compact { padding: 10px 16px; font-size: .8rem; }
.text-link { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; font-size: .85rem; }
.eyebrow { color: var(--muted); font: .75rem/1.7 var(--mono); }
.hero { padding-block: 88px 56px; }
h1 { font-size: clamp(3.1rem, 7.4vw, 6.5rem); line-height: 1.03; font-weight: 570; letter-spacing: -.045em; margin-top: 24px; }
h1 > span, h2 > span { color: var(--accent); }
.hero-copy { max-width: 680px; color: #b9bec8; font-size: clamp(1rem, 1.8vw, 1.2rem); margin-top: 30px; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 28px; margin-top: 32px; }
.design-note { max-width: 850px; margin-top: 32px; font-size: .81rem; color: var(--muted); }
.design-note strong { color: #dfe4ed; font-weight: 500; }
.hero-strip { display: flex; flex-wrap: wrap; gap: 16px 40px; padding-top: 28px; margin-top: 44px; border-top: 1px solid var(--line); color: #c9d1e0; font: .77rem/1.7 var(--mono); }
.section-border { padding-block: 80px; border-block: 1px solid var(--line); }
.section-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; }
h2 { font-size: clamp(2.05rem, 4vw, 3.6rem); line-height: 1.12; letter-spacing: -.035em; font-weight: 550; margin-top: 16px; }
h3 { font-weight: 520; font-size: 1.14rem; line-height: 1.35; letter-spacing: -.015em; }
.section-copy { color: var(--muted); max-width: 760px; margin-top: 24px; }
.order-intro { display: grid; grid-template-columns: 1.4fr 1fr; gap: 64px; margin-top: 32px; align-items: start; }
.order-intro > p { color: #b9bec8; max-width: 620px; }
.delivery-target { padding-left: 24px; border-left: 2px solid #3b82f6; }
.delivery-target strong { display: block; color: #eee; font-size: 2.6rem; font-weight: 500; line-height: 1.2; }
.delivery-target strong > span { font-size: .9rem; color: #c1c8d3; white-space: nowrap; }
.delivery-target p { color: var(--muted); font-size: .78rem; margin-top: 12px; }
.order-flow { list-style: none; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border: 1px solid var(--line); border-radius: 6px; background: #0b0d11; margin-top: 40px; overflow: hidden; }
.order-flow li { padding: 24px 20px; border-right: 1px solid var(--line); }
.order-flow li:last-child { border: 0; }
.order-flow li > span { font: .75rem var(--mono); color: #85b9ff; }
.order-flow h3 { font-size: .94rem; margin-top: 20px; }
.order-flow p { color: var(--muted); font-size: .78rem; margin-top: 10px; }
.order-demo { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; margin-top: 48px; }
.demo-copy h3 { font-size: 1.65rem; margin-top: 16px; max-width: 390px; }
.demo-copy > p:not(.eyebrow) { color: var(--muted); margin-top: 18px; font-size: .91rem; }
.demo-copy > p.small { font-size: .76rem; }
.stage-controls { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 24px; }
.stage-controls button { background: transparent; color: #c7cbd4; border: 1px solid #ffffff30; border-radius: 5px; padding: 12px; min-height: 48px; font-size: .79rem; }
.stage-controls button[aria-pressed="true"] { background: #171e2b; color: #fff; border-color: #5b86bd; }
.stage-controls button:hover { border-color: #a7abb3; }
.demo-copy > .text-link { margin-top: 12px; }
.order-card { background: #0d0f13; border: 1px solid var(--line); border-radius: 6px; min-width: 0; align-self: start; }
.card-head { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding: 16px 22px; border-bottom: 1px solid var(--line); font-size: .8rem; }
.card-head .eyebrow { font-size: .65rem; }
.order-card-body { padding: 24px; min-height: 328px; }
.order-card h3 { margin-top: 12px; font-size: 1.3rem; }
.order-card-body > p:not(.eyebrow) { margin-top: 12px; font-size: .82rem; color: var(--muted); }
.output-list { list-style: none; display: grid; gap: 8px; margin-top: 22px; font-size: .8rem; }
.output-list li { display: flex; align-items: baseline; gap: 10px; }
.output-list li::before { content: "↳"; color: #85b9ff; flex-shrink: 0; }
.response { border-top: 1px solid var(--line); }
.response summary { min-height: 48px; padding: 14px 24px; font-size: .8rem; }
.response summary::marker { color: #85b9ff; }
.response .route { display: block; padding: 14px 24px; color: #a9ceff; border-top: 1px solid var(--line); overflow-wrap: anywhere; font: .72rem/1.8 var(--mono); }
.response pre { max-height: 360px; overflow: auto; padding: 20px 24px; border-top: 1px solid var(--line); color: #c6d5ed; font: .72rem/1.8 var(--mono); }
.response pre code { font: inherit; }
.two-routes { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 48px; }
.two-routes article { padding-top: 24px; border-top: 1px solid var(--line); }
.two-routes h3 { margin-top: 8px; }
.two-routes p:not(.eyebrow) { color: var(--muted); font-size: .86rem; margin-top: 12px; }
.two-routes .text-link { margin-top: 12px; }
.source-note { color: var(--muted); font-size: .74rem; margin-top: 24px; max-width: 960px; }
.source-note a { text-decoration: underline; text-underline-offset: 3px; }
.catalogue-section { padding-block: 80px; }
.status-key { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-block: 32px; }
.status-key p { color: var(--muted); font-size: .75rem; margin-top: 10px; }
.status { display: inline-block; padding: 4px 9px; border: 1px solid #ffffff29; border-radius: 4px; font: .62rem/1.6 var(--mono); color: #c2c8d3; white-space: nowrap; }
.status-engine { color: #aacdff; background: #3b82f610; border-color: #3b82f644; }
.status-build { color: #d0d5df; background: #ffffff08; }
.status-partner { color: #e6c994; background: #a0762210; border-color: #a0762244; }
.status-network { color: #d0b4ee; background: #9262b810; border-color: #9262b844; }
.catalogue-controls { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 16px; padding: 24px; border: 1px solid var(--line); background: #0c0e12; border-radius: 6px; }
.catalogue-controls label { display: grid; gap: 8px; color: #c2c6cf; font-size: .76rem; }
.catalogue-controls .search-label { flex: 1; min-width: min(100%, 250px); }
.catalogue-controls input, .catalogue-controls select { width: 100%; min-height: 48px; background: #111319; color: #eee; border: 1px solid #ffffff33; border-radius: 4px; padding: 11px 13px; font-size: .85rem; }
.catalogue-controls input::placeholder { color: #969daa; opacity: 1; }
.catalogue-meta { display: flex; justify-content: space-between; flex-wrap: wrap; align-items: center; gap: 4px 24px; margin-block: 16px; color: var(--muted); font-size: .77rem; }
.catalogue-meta .text-link { font-size: .77rem; }
.catalogue-group { border-top: 1px solid var(--line); scroll-margin-top: 96px; }
.catalogue-group:last-child { border-bottom: 1px solid var(--line); }
.catalogue-group > summary { display: flex; align-items: flex-start; gap: 20px; padding: 25px 8px; list-style: none; min-height: 80px; }
.catalogue-group > summary::-webkit-details-marker { display: none; }
.catalogue-group > summary::after { content: "+"; color: #9aa7ba; font: 1.4rem/1.3 var(--mono); width: 22px; text-align: center; flex-shrink: 0; }
.catalogue-group[open] > summary::after { content: "−"; }
.catalogue-group > summary:hover .family-title { color: #a9ceff; }
.family-number { color: #8e9aaf; font: .73rem/2.3 var(--mono); flex-shrink: 0; }
.catalogue-group summary > span:nth-child(2) { flex: 1; min-width: 0; }
.family-title { display: block; font-size: 1.04rem; line-height: 1.5; font-weight: 500; }
.family-summary { display: block; margin-top: 5px; color: var(--muted); font-size: .8rem; max-width: 720px; }
.family-count { color: #9ba3b1; font: .64rem/2.5 var(--mono); white-space: nowrap; }
.family-content { padding: 0 8px 32px 48px; }
.family-audience { color: #cbd2de; font-size: .78rem; }
.family-dependency { color: var(--muted); font-size: .76rem; margin-top: 10px; max-width: 880px; border-left: 2px solid #426da9; padding-left: 14px; }
.endpoint-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 22px; }
.endpoint { min-width: 0; padding: 20px; border: 1px solid var(--line); border-radius: 5px; background: #101216; }
.endpoint-top { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px 16px; }
.endpoint h4 { font-size: .87rem; font-weight: 500; }
.endpoint p { margin-top: 12px; color: var(--muted); font-size: .77rem; }
.endpoint code { display: block; margin-top: 16px; color: #a9ceff; font: .67rem/1.9 var(--mono); overflow-wrap: anywhere; }
.method { color: #d6dfed; }
.empty-state { padding: 32px; border: 1px solid var(--line); color: #c2c8d3; text-align: center; font-size: .86rem; }
.audience-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; margin-top: 40px; }
.audience-grid article { padding-top: 20px; border-top: 1px solid var(--line); }
.audience-grid p { margin-top: 12px; color: var(--muted); font-size: .83rem; }
.commercial { display: flex; align-items: center; justify-content: space-between; gap: 40px; background: #101216; border: 1px solid var(--line); border-radius: 6px; padding: 32px; margin-top: 48px; }
.commercial p { color: var(--muted); max-width: 650px; font-size: .85rem; margin-top: 12px; }
.commercial .button { flex-shrink: 0; }
.rights { border-top: 1px solid var(--line); margin-top: 32px; }
.rights summary { padding-block: 20px; min-height: 48px; font-size: .86rem; }
.rights p { margin-bottom: 16px; color: var(--muted); font-size: .83rem; max-width: 920px; }
.footer { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 20px; padding-block: 30px; font-size: .77rem; }
.footer p { color: var(--muted); }
.small { color: var(--muted); font-size: .76rem; }
.sr-only, .skip-link:not(:focus) { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip-link:focus { position: fixed; left: 16px; top: 16px; z-index: 20; background: #fff; color: #000; padding: 12px; }
@media (max-width: 1000px) {
  .order-intro { gap: 32px; }
  .order-flow { grid-template-columns: 1fr; }
  .order-flow li { display: grid; grid-template-columns: 24px 125px 1fr; align-items: baseline; gap: 16px; padding: 18px 24px; border-right: 0; border-bottom: 1px solid var(--line); }
  .order-flow h3, .order-flow p { margin-top: 0; }
  .order-demo { gap: 32px; }
  .status-key { grid-template-columns: 1fr 1fr; }
  .endpoint-grid { grid-template-columns: 1fr; }
  .commercial { align-items: flex-start; flex-direction: column; gap: 24px; }
}
@media (max-width: 720px) {
  .nav { gap: 12px; min-height: 68px; justify-content: space-between; }
  .nav-links { display: none; }
  .brand { font-size: 1.05rem; gap: 8px; }
  .brand img { width: 22px; height: 22px; }
  .brand span { margin-left: 0; padding-left: 8px; font-size: .65rem; }
  .button.compact { padding: 10px 12px; font-size: .72rem; gap: 10px; }
  .hero { padding-block: 52px 40px; }
  .hero-strip { gap: 12px 22px; font-size: .69rem; }
  .section-border, .catalogue-section { padding-block: 52px; }
  .section-heading { flex-direction: column; gap: 16px; }
  .order-intro, .order-demo, .two-routes { grid-template-columns: 1fr; gap: 28px; }
  .order-flow { margin-top: 28px; }
  .order-flow li { grid-template-columns: 22px 1fr; gap: 6px 12px; padding: 18px; }
  .order-flow p { grid-column: 2; }
  .order-demo { margin-top: 32px; }
  .demo-copy h3 { max-width: none; }
  .order-card-body { min-height: 0; }
  .card-head, .order-card-body { padding-inline: 20px; }
  .two-routes { margin-top: 32px; gap: 12px; }
  .status-key { gap: 20px 16px; }
  .catalogue-controls { padding: 18px; }
  .catalogue-controls .search-label { flex-basis: 100%; }
  .catalogue-controls label:not(.search-label) { flex: 1; min-width: 0; }
  .catalogue-controls select { font-size: .78rem; padding-inline: 9px; }
  .catalogue-controls .button { padding-inline: 16px; }
  .catalogue-group > summary { gap: 12px; padding-inline: 0; }
  .family-count { display: none; }
  .family-content { padding: 0 0 24px; }
  .endpoint { padding: 18px; }
  .audience-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .commercial { padding: 24px; }
}
@media (max-width: 400px) {
  .audience-grid, .status-key { grid-template-columns: 1fr; }
  .family-title { font-size: .94rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }