:root { --site-width: 1160px; }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(800px 440px at 75% -5%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 68%),
    var(--bg);
  color: var(--ink);
  font: 15px/1.55 Inter, ui-sans-serif, system-ui, -apple-system, sans-serif;
}
a { color: inherit; }
button { font: inherit; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 100; padding: 10px 14px; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; }
.skip-link:focus { top: 12px; }
.site-nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 12px max(22px, calc((100vw - var(--site-width)) / 2));
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(16px);
}
.brand { display: flex; align-items: center; gap: 9px; font-size: 18px; font-weight: 800; text-decoration: none; white-space: nowrap; }
.brand span { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 10px; background: linear-gradient(135deg, var(--accent), var(--blue)); }
.site-nav nav { display: flex; gap: 24px; margin-left: auto; }
.site-nav nav a, footer a { color: var(--muted); text-decoration: none; }
.site-nav nav a:hover, footer a:hover { color: var(--ink); }
.github-placeholder { cursor: default; pointer-events: none; }
.theme-toggle { border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--ink); }
main, footer { width: min(var(--site-width), calc(100% - 40px)); margin: auto; }

.hero { min-height: 590px; display: flex; align-items: center; padding: 84px 0 76px; }
.hero-copy { max-width: 940px; }
.eyebrow { margin: 0 0 12px; color: var(--accent); font: 750 11px/1.2 ui-monospace, SFMono-Regular, monospace; letter-spacing: .13em; }
.demo-label { margin-left: 8px; padding: 3px 6px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 8px; letter-spacing: .07em; }
.hero h1 { max-width: 900px; margin: 0; font-size: clamp(52px, 6.4vw, 82px); line-height: .97; letter-spacing: -.045em; }
.lede { max-width: 650px; margin: 25px 0 0; color: var(--text-subtle); font-size: 19px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.primary-link, .secondary-link { display: inline-flex; padding: 11px 17px; border-radius: 10px; font-weight: 750; text-decoration: none; }
.primary-link { background: var(--accent); color: var(--accent-contrast); }
.secondary-link { border: 1px solid var(--line); background: var(--surface); }

.how { display: grid; grid-template-columns: .72fr 1.28fr; gap: 70px; padding: 100px 0; border-bottom: 1px solid var(--line); }
.section-copy h2, .demo-heading h2 { margin: 0; font-size: clamp(32px, 4.3vw, 52px); line-height: 1.04; letter-spacing: -.045em; }
.access-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.access-card { min-width: 0; padding: 18px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); overflow: hidden; }
.access-head { display: flex; align-items: center; gap: 11px; }
.access-icon { width: 38px; height: 38px; display: grid; place-items: center; flex: none; border-radius: 11px; background: color-mix(in srgb, var(--accent) 10%, var(--surface2)); color: var(--accent); font-size: 20px; }
.access-head div { display: grid; }
.access-head small { color: var(--muted); font: 700 8px ui-monospace, monospace; letter-spacing: .08em; }
.access-head strong { margin-top: 2px; }
.browser-scene, .agent-scene { min-height: 220px; margin: 18px -3px 17px; padding: 12px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface2); }
.window-bar { display: flex; align-items: center; gap: 5px; margin: -2px 0 14px; color: var(--muted); font: 9px ui-monospace, monospace; }
.window-bar i { width: 6px; height: 6px; border-radius: 50%; background: var(--line); }
.window-bar span { margin-left: auto; }
.mini-skill { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: 8px; padding: 13px 11px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); font-size: 11px; }
.mini-skill span { width: 21px; height: 21px; display: grid; place-items: center; border-radius: 6px; border: 1px solid var(--line); color: var(--muted); }
.mini-skill.selected { border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); }
.mini-skill.selected span { border-color: var(--accent); background: var(--accent); color: var(--accent-contrast); }
.mini-checkout { display: flex; justify-content: space-between; gap: 8px; margin-top: 13px; padding-top: 11px; border-top: 1px solid var(--line); color: var(--muted); font-size: 10px; }
.mini-checkout strong { color: var(--accent); }
.agent-scene { display: flex; flex-direction: column; justify-content: center; gap: 11px; background: linear-gradient(160deg, color-mix(in srgb, var(--blue) 6%, var(--surface2)), var(--surface2)); }
.agent-line { display: grid; grid-template-columns: 34px 1fr; align-items: start; gap: 8px; }
.agent-line span { padding-top: 7px; color: var(--muted); font: 8px ui-monospace, monospace; text-transform: uppercase; }
.agent-line p { margin: 0; padding: 8px 10px; border-radius: 4px 10px 10px 10px; background: var(--surface); color: var(--text-subtle); font-size: 10px; }
.agent-line.tool p { border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line)); }
.agent-result { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 7px; margin-top: 5px; padding: 10px; border: 1px solid color-mix(in srgb, var(--ok) 38%, var(--line)); border-radius: 9px; background: color-mix(in srgb, var(--ok) 6%, var(--surface)); font-size: 9px; }
.agent-result i { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); }
.agent-result strong { color: var(--ok); font: 700 9px ui-monospace, monospace; }
.path-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; margin: 0; padding: 0; list-style: none; counter-reset: access-step; }
.path-steps li { counter-increment: access-step; color: var(--muted); font: 8px ui-monospace, monospace; text-transform: uppercase; }
.path-steps li::before { content: counter(access-step); display: block; margin-bottom: 3px; color: var(--accent); }

.runtime-demo { padding: 100px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.demo-heading { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 28px; margin-bottom: 30px; }
.demo-heading h2 { max-width: 780px; }
.replay { display: inline-flex; align-items: center; gap: 8px; padding: 9px 13px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--ink); cursor: pointer; }
.stage { border: 1px solid var(--line); border-radius: 20px; overflow: hidden; background: var(--surface); box-shadow: 0 24px 70px color-mix(in srgb, var(--shadow) 28%, transparent); }
.stage-steps { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--line); background: var(--surface2); }
.stage-steps span { padding: 13px 15px; border-right: 1px solid var(--line); color: var(--muted); font: 700 9px ui-monospace, monospace; letter-spacing: .08em; text-transform: uppercase; }
.stage-steps span:last-child { border-right: 0; }
.stage-steps span.active { background: color-mix(in srgb, var(--accent) 8%, var(--surface)); color: var(--accent); box-shadow: inset 0 -2px var(--accent); }
.stage-grid { display: grid; grid-template-columns: 1fr 1fr; min-height: 390px; }
.demo-pane + .demo-pane { border-left: 1px solid var(--line); }
.demo-pane header { display: flex; align-items: center; gap: 9px; padding: 13px 16px; border-bottom: 1px solid var(--line); }
.demo-pane header small { margin-left: auto; color: var(--muted); font: 700 8px ui-monospace, monospace; letter-spacing: .08em; }
.demo-pane header small.participant-you { color: var(--ink); font-size: 11px; letter-spacing: 0; text-transform: none; }
.pane-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 5px color-mix(in srgb, var(--blue) 11%, transparent); }
.pane-dot.marketplace { background: var(--accent); box-shadow: 0 0 0 5px color-mix(in srgb, var(--accent) 11%, transparent); }
.demo-stream { height: 340px; overflow: auto; padding: 18px; scroll-behavior: smooth; }
.demo-message, .demo-event { animation: appear .28s ease both; }
@keyframes appear { from { opacity: 0; transform: translateY(5px); } }
.demo-message { max-width: 78%; margin-bottom: 12px; padding: 11px 13px; border: 1px solid var(--line); border-radius: 4px 13px 13px 13px; background: var(--surface2); color: var(--text-subtle); }
.demo-message.user { margin-left: auto; border-radius: 13px 4px 13px 13px; background: color-mix(in srgb, var(--blue) 8%, var(--surface2)); }
.demo-message p { margin: 0; }
.demo-event { display: grid; grid-template-columns: auto 1fr; gap: 10px; margin-bottom: 9px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.demo-event > span { width: 25px; height: 25px; display: grid; place-items: center; border-radius: 8px; background: color-mix(in srgb, var(--accent) 10%, var(--surface2)); color: var(--accent); font: 700 9px ui-monospace, monospace; }
.demo-event strong { display: block; font-size: 11px; }
.demo-event p { margin: 3px 0 0; color: var(--muted); font: 10px ui-monospace, monospace; }
.agent-support { margin-top: 52px; padding-top: 34px; border-top: 1px solid var(--line); }
.agent-support > .eyebrow { margin-bottom: 18px; }
.logo-marquee { overflow: hidden; padding: 1px; mask-image: linear-gradient(90deg, transparent, #000 4%, #000 96%, transparent); }
.logo-track { width: max-content; display: flex; gap: 12px; animation: logo-scroll 30s linear infinite; }
.logo-set { display: flex; gap: 12px; }
.logo-tile { width: 178px; min-height: 62px; display: flex; align-items: center; justify-content: center; gap: 12px; padding: 12px 16px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); text-decoration: none; }
.logo-tile img { width: 32px; height: 32px; flex: none; object-fit: contain; opacity: .86; filter: invert(1); transition: opacity .18s ease, transform .18s ease; }
.logo-tile strong { font-size: 15px; white-space: nowrap; }
html[data-theme='light'] .logo-tile img { filter: none; }
.logo-tile img.brand-colour { filter: none; opacity: 1; }
.logo-tile:hover img { opacity: 1; transform: scale(1.08); }
@keyframes logo-scroll { to { transform: translateX(calc(-50% - 6px)); } }
.logo-marquee:hover .logo-track, .logo-marquee:focus-within .logo-track { animation-play-state: paused; }

.publish-section { display: grid; grid-template-columns: .78fr 1.22fr; align-items: center; gap: 70px; padding: 100px 0; border-bottom: 1px solid var(--line); }
.publish-copy h2 { max-width: 520px; margin: 0; font-size: clamp(38px, 5.3vw, 62px); line-height: .98; letter-spacing: -.05em; }
.publish-copy > p:not(.eyebrow) { max-width: 460px; margin: 22px 0 0; color: var(--text-subtle); font-size: 17px; }
.publish-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.publisher-console { min-width: 0; overflow: hidden; border: 1px solid color-mix(in srgb, var(--accent) 34%, var(--line)); border-radius: 20px; background: var(--surface); box-shadow: 0 24px 70px color-mix(in srgb, var(--shadow) 20%, transparent); }
.publisher-console > header { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 18px 20px; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--accent) 6%, var(--surface2)); }
.publisher-console > header div { display: grid; }
.publisher-console > header small { color: var(--muted); font: 700 8px ui-monospace, monospace; letter-spacing: .09em; }
.publisher-console > header strong { margin-top: 2px; font-size: 17px; }
.publisher-console > header span { color: var(--accent); font-size: 12px; font-weight: 750; }
.publisher-list { padding: 8px 20px; }
.publisher-list article { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 13px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.publisher-list article:last-child { border-bottom: 0; }
.publisher-list article > i { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 11px; background: color-mix(in srgb, var(--accent) 11%, var(--surface2)); color: var(--accent); font: 750 10px ui-monospace, monospace; font-style: normal; }
.publisher-list article > div { min-width: 0; display: grid; }
.publisher-list article strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.publisher-list article small { margin-top: 2px; color: var(--muted); }
.publisher-list article > b { padding: 5px 8px; border-radius: 999px; background: color-mix(in srgb, var(--ok) 10%, var(--surface2)); color: var(--ok); font: 750 9px ui-monospace, monospace; text-transform: uppercase; }
.publisher-list article.draft > b { background: var(--surface2); color: var(--muted); }
.publisher-flow { display: flex; align-items: center; justify-content: center; gap: 11px; padding: 14px 20px; border-top: 1px solid var(--line); background: var(--surface2); color: var(--muted); font: 700 9px ui-monospace, monospace; letter-spacing: .05em; text-transform: uppercase; }
.publisher-flow i { width: 24px; height: 1px; background: var(--line); }
footer { display: flex; justify-content: space-between; gap: 20px; padding: 28px 0 44px; border-top: 1px solid var(--line); color: var(--muted); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .demo-message, .demo-event { animation: none; }
  .logo-marquee { overflow-x: auto; mask-image: none; }
  .logo-track { animation: none; }
  .logo-set[aria-hidden='true'] { display: none; }
}
@media (max-width: 940px) {
  .hero-copy { max-width: 820px; }
  .how, .publish-section { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 820px) {
  .site-nav { gap: 12px; }
  .site-nav nav { gap: 13px; }
  .site-nav nav .github-placeholder { display: none; }
  .hero { min-height: auto; padding-top: 60px; }
  .stage-grid, .access-cards { grid-template-columns: 1fr; }
  .demo-pane + .demo-pane { border-left: 0; border-top: 1px solid var(--line); }
  .demo-stream { height: 290px; }
}
@media (max-width: 620px) {
  .site-nav { flex-wrap: wrap; }
  .site-nav nav { order: 3; width: 100%; justify-content: space-between; overflow-x: auto; padding-top: 8px; border-top: 1px solid var(--line); }
  .theme-toggle { margin-left: auto; }
  .hero h1 { font-size: 50px; }
  .demo-heading { grid-template-columns: 1fr; }
  .replay { justify-self: start; }
  .stage-steps span { padding: 11px 6px; font-size: 7px; }
  .logo-tile { width: 160px; }
  .publish-section { padding: 72px 0; }
  .publisher-flow { justify-content: flex-start; overflow-x: auto; }
  .publisher-flow span { white-space: nowrap; }
  footer { flex-direction: column; }
}