:root {
  color-scheme: light;
  --canvas: #fff;
  --ink: #16161d;
  --ink-muted: #626a78;
  --divider: #d9dce2;
  --mint-ink: #287d69;
  --violet-ink: #6f52e5;
  --body: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --heading: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "Roboto Mono", ui-monospace, monospace;
  --measure: 660px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 32px; }
body { margin: 0; background: var(--canvas); color: var(--ink); font: 400 1.125rem/1.65 var(--body); }
::selection { background: #e6f9f1; color: var(--ink); }
a { color: var(--mint-ink); text-decoration-thickness: 1px; text-underline-offset: .18em; }
a:hover { color: var(--violet-ink); }
:is(a, button, textarea):focus-visible { outline: 2px solid var(--violet-ink); outline-offset: 4px; }
header, .hero, article, .connect, footer { width: min(var(--measure), calc(100% - 48px)); margin-inline: auto; }
header { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; padding-top: 48px; font: 400 .875rem/1.5 var(--heading); }
header a { display: inline-flex; align-items: center; min-height: 44px; }
.wordmark { color: var(--ink); font-size: 1rem; text-decoration: none; }
.date { display: block; color: var(--ink-muted); font-size: .875rem; }
.hero { padding: 48px 0 40px; }
h1 { margin: 0 0 20px; max-width: 620px; font: 600 clamp(2rem, 3.25vw, 2.625rem)/1.14 var(--heading); letter-spacing: -.035em; text-wrap: balance; }
.lead { margin: 0 0 16px; font-size: 1.25rem; }
.invitation-link { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; font-size: 1rem; }
article { padding-bottom: 40px; }
article p { margin: 0 0 24px; }
article > p:last-child { margin-bottom: 0; }
article .principle { margin-block: 40px 24px; max-width: 560px; font: 600 1.625rem/1.3 var(--heading); letter-spacing: -.02em; }
.principle strong { font-weight: inherit; }
.ownership-passage { position: relative; }
.coordination { margin: 32px 0; padding: 20px 0; border-block: 1px solid var(--divider); overflow-wrap: anywhere; }
.diagram-heading { margin-bottom: 20px; color: var(--ink-muted); font: 400 .875rem/1.5 var(--heading); }
.account-exchange { display: grid; grid-template-columns: minmax(0, 1fr) 112px minmax(0, 1fr); gap: 16px; }
.account { min-width: 0; }
.account h3 { margin: 0 0 8px; color: var(--mint-ink); font: 500 .875rem/1.5 var(--heading); }
.account-body { display: flex; flex-direction: column; gap: 4px; font: 400 .875rem/1.5 var(--mono); }
.agent-node { color: var(--ink); }
.outbox { color: var(--ink-muted); }
.owner-view { margin: 12px 0 0 !important; color: var(--ink-muted); font-size: .875rem; line-height: 1.5; }
.exchange { display: flex; flex-direction: column; justify-content: center; gap: 16px; }
.flow { display: flex; flex-direction: column; align-items: center; gap: 4px; color: var(--ink-muted); font-size: .875rem; line-height: 1.35; text-align: center; }
.flow svg { display: block; width: 48px; height: 16px; }
.reverse svg { transform: rotate(180deg); }
figcaption { margin-top: 20px; color: var(--ink-muted); font-size: .875rem; line-height: 1.5; }
.connect { padding-block: 32px 40px; border-top: 1px solid var(--divider); }
.connect h2 { margin: 0 0 16px; font: 600 1.5rem/1.3 var(--heading); letter-spacing: -.02em; }
.connect > p { margin: 0 0 24px; }
.prompt-wrap { margin-top: 24px; }
label { display: block; margin-bottom: 8px; font: 400 .875rem/1.5 var(--heading); color: var(--ink-muted); }
textarea { display: block; width: 100%; min-height: 220px; padding: 16px; border: 1px solid var(--ink-muted); border-radius: 0; resize: vertical; background: #fff; color: var(--ink); font: 400 1rem/1.65 var(--body); overflow-wrap: anywhere; }
.actions { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 24px; margin-top: 12px; font-size: .875rem; }
.actions a { display: inline-flex; align-items: center; min-height: 44px; }
.button { min-width: 150px; min-height: 44px; padding: 8px 16px; background: #fff; color: var(--ink); border: 1px solid var(--ink-muted); border-radius: 2px; cursor: pointer; font: 500 .875rem/1.5 var(--heading); }
.button:hover { background: #e6f9f1; }
.button:active { background: var(--mint-ink); color: #fff; }
.copy-status { margin: 8px 0 16px; min-height: 24px; font-size: .875rem; }
.connect .fine { color: var(--ink-muted); font-size: .875rem; margin-bottom: 0; }
#for-agents { border-top: 1px solid var(--divider); padding-top: 20px; margin-top: 24px; font-size: 1rem; }
#for-agents p { margin: 0; }
#for-agents strong { font: 600 1rem/1.5 var(--heading); }
code { font: 400 .875rem/1.5 var(--mono); overflow-wrap: anywhere; }
footer { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 24px; margin-bottom: 48px; padding-top: 16px; border-top: 1px solid var(--divider); font-size: .875rem; color: var(--ink-muted); }
footer > span:first-child { margin-right: auto; }
footer a { display: inline-flex; gap: 4px; align-items: center; min-height: 44px; color: var(--ink-muted); }
.skip { position: absolute; top: -100px; left: 24px; padding: 12px 16px; background: #fff; z-index: 2; }
.skip:focus { top: 12px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
@media (min-width: 1200px) {
  header, .hero, article, .connect, footer { margin-left: calc((100% - 1040px) / 2); margin-right: 0; }
  .coordination { position: absolute; left: calc(100% + 64px); top: 0; width: 252px; padding: 0 0 0 20px; margin: 0; border-block: 0; border-left: 1px solid var(--divider); }
  .account-exchange { grid-template-columns: 1fr; gap: 16px; }
  .exchange { flex-direction: row; gap: 16px; justify-content: space-between; }
  .flow { flex-direction: row; gap: 4px; text-align: left; }
  .flow svg { width: 24px; height: 16px; flex: 0 0 24px; }
  .forward svg { transform: rotate(90deg); }
  .reverse svg { transform: rotate(-90deg); }
}
@media (max-width: 639px) {
  body { font-size: 1.0625rem; }
  header { padding-top: 24px; gap: 16px; }
  .hero { padding-top: 32px; padding-bottom: 32px; }
  h1 { font-size: 2rem; }
  .lead { font-size: 1.1875rem; }
  article .principle { font-size: 1.375rem; margin-top: 32px; }
  .account-exchange { grid-template-columns: 1fr; gap: 16px; }
  .account-body { flex-direction: row; flex-wrap: wrap; gap: 4px 16px; }
  .owner-view { margin-top: 4px !important; }
  .exchange { flex-direction: row; gap: 16px; justify-content: flex-start; }
  .flow { flex-direction: row; gap: 8px; text-align: left; }
  .flow svg { width: 32px; height: 16px; flex: 0 0 32px; }
  .forward svg { transform: rotate(90deg); }
  .reverse svg { transform: rotate(-90deg); }
  .actions { gap: 8px 16px; }
  footer > span:first-child { flex-basis: 100%; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }