:root {
  color-scheme: dark;
  --ink: #171923;
  --ink-raised: #222634;
  --paper: #f4f0e6;
  --muted: #b2b5c1;
  --line: #3b4050;
  --mint: #b9df75;
  --orange: #e99a77;
  --night: #0e1118;
  --quiet: #8b90a0;
  --surface-inset: #1b202c;
  --inset-line: #3a4050;
  --accent-ink: #171923;
  --mint-hover: #d0ee9d;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--paper);
  background: var(--ink);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; line-height: 1.55; }
a { color: inherit; }
a:hover { color: var(--mint); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--mint); outline-offset: 4px; }
.skip { position: absolute; top: 0; left: -9999px; z-index: 2; padding: .75rem 1rem; background: var(--paper); color: var(--ink); }
.skip:focus { left: 1rem; }
.site-header, main, footer { width: min(100% - 3rem, 1160px); margin-inline: auto; }
.site-header { display: flex; align-items: center; justify-content: space-between; min-height: 80px; border-bottom: 1px solid var(--line); }
.wordmark { display: inline-flex; align-items: center; gap: .55rem; color: var(--paper); text-decoration: none; font-size: 1rem; font-weight: 750; letter-spacing: -.025em; }
.wordmark-mark { display: grid; width: 2rem; height: 2rem; place-items: center; border-radius: .45rem; background: var(--mint); color: var(--accent-ink); font-family: var(--mono); font-size: .82rem; letter-spacing: -.08em; }
.site-header nav { display: flex; align-items: center; gap: clamp(1rem, 3vw, 2.3rem); }
.site-header nav a { color: var(--muted); font-size: .84rem; text-decoration: none; }
.site-header nav a:hover { color: var(--paper); }
.site-header nav .nav-cta { padding: .55rem .8rem; border: 1px solid var(--line); border-radius: .35rem; color: var(--paper); }
.site-header nav .nav-cta span { padding-left: .4rem; color: var(--mint); }
.theme-toggle { padding: .5rem .7rem; border: 1px solid var(--line); border-radius: .35rem; background: transparent; color: var(--paper); font: inherit; font-size: .78rem; cursor: pointer; }
.theme-toggle:hover { border-color: var(--mint); color: var(--mint); }
.hero { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: clamp(3rem, 8vw, 7rem); padding-block: clamp(4.5rem, 10vw, 8rem); }
.hero-copy { padding-block: .5rem; }
.eyebrow { display: flex; align-items: center; gap: .55rem; margin: 0 0 1.15rem; color: var(--mint); font-family: var(--mono); font-size: .7rem; letter-spacing: .055em; }
.status-light { width: .48rem; height: .48rem; border-radius: 50%; background: var(--mint); box-shadow: 0 0 0 4px color-mix(in srgb, var(--mint) 12%, transparent); }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 11ch; margin-bottom: 1.3rem; font-size: clamp(3.3rem, 7vw, 6.4rem); font-weight: 650; letter-spacing: -.075em; line-height: .99; }
.hero-intro { max-width: 51ch; margin-bottom: 1.75rem; color: var(--muted); font-size: clamp(1rem, 1.5vw, 1.15rem); }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 1.35rem; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .8rem; min-height: 3rem; padding: .7rem 1rem; border-radius: .35rem; text-decoration: none; font-size: .9rem; font-weight: 700; }
.button-primary { background: var(--mint); color: var(--accent-ink); }
.button-primary:hover { background: var(--mint-hover); color: var(--accent-ink); }
.text-link { color: var(--paper); font-size: .86rem; text-decoration-color: var(--line); text-underline-offset: .25rem; }
.text-link span { padding-left: .25rem; color: var(--mint); }
.hero-footnote { margin: 2.2rem 0 0; color: var(--quiet); font-size: .78rem; }
.signal-board { --board-text: var(--paper); --board-muted: var(--muted); --board-mint: var(--mint); --board-orange: var(--orange); position: relative; min-width: 0; padding: 1.3rem 1.25rem 1rem; border: 1px solid var(--inset-line); border-radius: .55rem; background: radial-gradient(ellipse at 50% 10%, color-mix(in srgb, var(--ink-raised), var(--paper) 4%) 0%, var(--ink-raised) 72%); box-shadow: 0 24px 65px #0003; color: var(--board-text); }
.board-topline { display: flex; justify-content: space-between; gap: .8rem; color: var(--board-muted); font-family: var(--mono); font-size: .62rem; letter-spacing: .07em; }
.live-indicator { color: var(--board-mint); white-space: nowrap; }
.host-node { position: relative; z-index: 1; display: flex; align-items: center; gap: .8rem; width: min(100%, 310px); margin: 2rem auto 0; padding: .85rem 1rem; border: 1px solid color-mix(in srgb, var(--line), var(--muted) 40%); border-radius: .4rem; background: var(--surface-inset); }
.host-symbol { display: grid; width: 2.1rem; height: 2.1rem; place-items: center; border: 1px solid var(--muted); border-radius: .35rem; color: var(--board-mint); font-family: var(--mono); font-size: 1.1rem; }
.host-node strong, .host-node small { display: block; }
.host-node strong { font-size: .85rem; }
.host-node small { margin-top: .1rem; color: var(--board-muted); font-size: .66rem; }
.host-mode { margin-left: auto; color: var(--board-mint); font-family: var(--mono); font-size: .53rem; white-space: nowrap; }
.signal-lines { position: absolute; top: 7.35rem; left: 25%; width: 50%; height: 4rem; border: solid var(--board-mint); border-width: 1px 1px 0; border-radius: 50% 50% 0 0; opacity: .65; }
.group-nodes { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr 1fr; gap: .85rem; margin-top: 2.2rem; }
.group-node { padding: .8rem; border: 1px solid var(--inset-line); border-radius: .4rem; background: var(--surface-inset); }
.group-node-alt { border-color: color-mix(in srgb, var(--inset-line), var(--board-orange) 30%); background: color-mix(in srgb, var(--surface-inset), var(--board-orange) 8%); }
.group-heading { display: flex; align-items: center; gap: .5rem; margin-bottom: .65rem; }
.group-heading > span { color: var(--board-mint); font-family: var(--mono); font-size: .6rem; }
.group-node-alt .group-heading > span { color: var(--board-orange); }
.group-heading strong { font-size: .74rem; font-weight: 650; }
.headset-list { display: flex; flex-wrap: wrap; gap: .35rem; }
.headset-chip { display: inline-flex; align-items: center; gap: .3rem; padding: .25rem .4rem; border: 1px solid var(--inset-line); border-radius: .25rem; color: var(--board-muted); font-size: .59rem; }
.headset-chip b { display: grid; width: .9rem; height: .9rem; place-items: center; border-radius: 50%; background: color-mix(in srgb, var(--board-mint) 15%, transparent); color: var(--board-mint); font-size: .52rem; }
.group-node-alt .headset-chip b { background: color-mix(in srgb, var(--board-orange) 15%, transparent); color: var(--board-orange); }
.board-caption { margin: .8rem 0 0; color: var(--board-muted); text-align: center; font-size: .66rem; }
.board-caption span { margin-right: .25rem; color: var(--board-mint); }
.feature-band { display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--line); }
.feature-band > div { display: flex; align-items: flex-start; gap: 1rem; min-height: 95px; padding: 1.3rem 1.5rem; }
.feature-band > div:first-child { padding-left: 0; }
.feature-band > div + div { border-left: 1px solid var(--line); }
.feature-number { padding-top: .1rem; color: var(--mint); font-family: var(--mono); font-size: .67rem; }
.feature-band p { margin: 0; color: var(--muted); font-size: .78rem; }
.feature-band strong { display: inline-block; margin-bottom: .2rem; color: var(--paper); font-size: .88rem; font-weight: 650; }
.section { padding-block: clamp(4.5rem, 9vw, 7rem); }
.section-heading { max-width: 660px; }
.section-heading h2, .panel-copy h2, .demo-heading h2, .start-banner h2 { margin-bottom: .9rem; font-size: clamp(2rem, 4vw, 3.3rem); font-weight: 620; letter-spacing: -.055em; line-height: 1.08; }
.section-heading > p:last-child { max-width: 62ch; margin-bottom: 2rem; color: var(--muted); }
.group-explainer { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.group-card { min-width: 0; padding: clamp(1.3rem, 3vw, 2rem); border: 1px solid var(--line); border-radius: .45rem; background: var(--ink-raised); }
.group-card-dark { background: #1c202b; }
.card-index { color: var(--mint); font-family: var(--mono); font-size: .65rem; letter-spacing: .04em; }
.group-card h3 { margin: 1.1rem 0 .55rem; font-size: 1.35rem; font-weight: 620; letter-spacing: -.035em; }
.group-card > p { min-height: 4rem; margin-bottom: 1.3rem; color: var(--muted); font-size: .88rem; }
.mini-group-list { display: grid; gap: .5rem; }
.mini-group-list > div { display: grid; grid-template-columns: .65rem 1fr auto; align-items: center; gap: .65rem; padding: .65rem .75rem; border: 1px solid var(--inset-line); border-radius: .3rem; background: var(--surface-inset); font-size: .73rem; }
.mini-group-list strong { font-weight: 600; }
.mini-group-list > div > span:last-child { color: var(--quiet); font-size: .68rem; }
.mini-dot { width: .45rem; height: .45rem; border-radius: 50%; }
.dot-mint { background: var(--mint); }
.dot-orange { background: var(--orange); }
.route-example { display: flex; align-items: center; justify-content: space-between; gap: .45rem; min-height: 3.2rem; padding: .65rem .75rem; border: 1px solid var(--inset-line); border-radius: .3rem; background: var(--surface-inset); }
.route-example > span { color: var(--paper); font-size: .72rem; }
.route-example > i { flex: 1; max-width: 3.5rem; height: 1px; background: var(--mint); }
.route-example > i:nth-of-type(2) { background: var(--orange); }
.route-example small { display: none; }
.mode-note { max-width: 75ch; margin: 1.3rem 0 0; padding-left: 1rem; border-left: 2px solid var(--orange); color: var(--muted); font-size: .84rem; }
.mode-note strong { color: var(--paper); }
.panel-section { display: grid; grid-template-columns: .85fr 1.15fr; align-items: center; gap: clamp(2.5rem, 7vw, 6rem); border-top: 1px solid var(--line); }
.panel-copy > p:not(.eyebrow) { max-width: 52ch; color: var(--muted); font-size: .9rem; }
code { color: var(--mint); font-family: var(--mono); font-size: .9em; }
.key-list { display: grid; gap: .75rem; margin: 1.6rem 0 1.3rem; padding: 0; list-style: none; }
.key-list li { display: flex; align-items: center; gap: .75rem; color: var(--muted); font-size: .78rem; }
kbd { display: inline-grid; min-width: 2.25rem; min-height: 1.8rem; place-items: center; padding-inline: .4rem; border: 1px solid #50566a; border-bottom-width: 2px; border-radius: .25rem; color: var(--paper); font-family: var(--mono); font-size: .67rem; }
.panel-copy .panel-update { color: var(--quiet); font-size: .75rem; }
.tui-card { overflow: hidden; border: 1px solid #454b5d; background: var(--night); box-shadow: 0 20px 65px #0003; }
.tui-screen { padding: .8rem; color: #d2d2cb; font-family: var(--mono); font-size: clamp(.48rem, .75vw, .65rem); }
.tui-title { overflow: hidden; margin-bottom: .65rem; color: var(--paper); font-weight: 600; text-overflow: ellipsis; white-space: nowrap; }
.tui-status, .tui-pane { min-width: 0; border: 1px solid #51586a; }
.tui-status { padding: .55rem; }
.tui-box-title { overflow: hidden; margin: -.95rem 0 .45rem .5rem; padding-inline: .3rem; width: fit-content; max-width: calc(100% - .75rem); background: var(--night); color: #d2d2cb; text-overflow: ellipsis; white-space: nowrap; }
.tui-status table { width: 100%; border-collapse: collapse; text-align: left; }
.tui-status th { color: #b2b5c1; font-weight: 600; }
.tui-status th, .tui-status td { padding: .25rem .35rem; white-space: nowrap; }
.tui-status td:nth-child(3), .tui-status td:nth-child(4) { color: var(--mint); }
.tui-lower { display: grid; grid-template-columns: 2fr 3fr; gap: .6rem; margin-top: .8rem; }
.tui-pane { min-height: 7.5rem; padding: .55rem; }
.tui-pane p { overflow: hidden; margin: .35rem 0; text-overflow: ellipsis; white-space: nowrap; }
.tui-pane .tui-selected, .tui-pane .tui-member { color: var(--mint); }
.tui-footer { overflow: hidden; margin-top: .65rem; padding: .45rem .3rem 0; border-top: 1px solid #51586a; color: #b2b5c1; text-overflow: ellipsis; white-space: nowrap; }
.tui-caption { margin: 0; padding: .65rem .9rem; border-top: 1px solid #343949; color: #8b90a0; font-size: .65rem; }
.demo-section { border-top: 1px solid var(--line); }
.demo-heading { display: flex; align-items: end; justify-content: space-between; gap: 2rem; margin-bottom: 1.5rem; }
.demo-heading h2 { margin-bottom: 0; }
.demo-heading > p { max-width: 40ch; margin: 0 0 .25rem; color: var(--muted); font-size: .84rem; }
.player-panel { overflow: hidden; border: 1px solid #3b4050; border-radius: .45rem; background: #0e1118; }
.panel-heading { display: flex; min-width: 0; align-items: center; gap: .7rem; padding: .75rem 1rem; border-bottom: 1px solid #343949; color: #b2b5c1; font-family: var(--mono); font-size: .72rem; }
.panel-label { margin-left: auto; color: #8b90a0; font-size: .56rem; white-space: nowrap; }
.dot { width: .55rem; height: .55rem; border-radius: 50%; background: var(--mint); }
#player { min-width: 0; max-width: 100%; overflow: hidden; }
#player > p { margin: 0; padding: 1.25rem; color: var(--muted); font-size: .85rem; }
#player .ap-wrapper, #player .ap-player { max-width: 100%; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: pre; border: 0; }
.note { margin: .8rem 0 0; color: var(--quiet); font-size: .75rem; }
.note a { color: var(--muted); }
.start-banner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: clamp(1.5rem, 5vw, 3.3rem); border: 1px solid #454b5d; border-radius: .45rem; background: #222a32; }
.start-banner .eyebrow { margin-bottom: .6rem; }
.start-banner h2 { margin: 0; font-size: clamp(1.7rem, 3vw, 2.5rem); }
.start-banner .button { flex: 0 0 auto; }
.requirements-note { margin: 1.25rem auto 4rem; color: var(--quiet); font-size: .73rem; text-align: center; }
footer { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; min-height: 90px; border-top: 1px solid var(--line); color: var(--quiet); font-size: .72rem; }
footer .wordmark { font-size: .85rem; }
footer .wordmark-mark { width: 1.65rem; height: 1.65rem; font-size: .68rem; }
footer > span { text-align: center; }
footer > a:last-child { color: var(--muted); text-decoration: none; }
footer > a:last-child:hover { color: var(--mint); }
@media (max-width: 850px) {
  .hero { grid-template-columns: 1fr; gap: 3rem; padding-block: 4.5rem; }
  .hero-copy { max-width: 690px; }
  .signal-board { width: min(100%, 600px); margin-inline: auto; }
  .panel-section { grid-template-columns: 1fr; gap: 2.5rem; }
  .panel-copy { max-width: 660px; }
}
@media (max-width: 600px) {
  .site-header, main, footer { width: min(100% - 2rem, 1160px); }
  .site-header { min-height: 68px; flex-wrap: wrap; padding-block: .75rem; }
  .site-header nav { flex-wrap: wrap; justify-content: flex-end; gap: .85rem; }
  .site-header nav a { font-size: .72rem; }
  .site-header nav .nav-cta { padding: .45rem .55rem; }
  .hero { gap: 2.5rem; padding-block: 3.8rem; }
  h1 { font-size: clamp(3.1rem, 15vw, 5rem); }
  .hero-intro { font-size: 1rem; }
  .signal-board { padding-inline: .8rem; }
  .group-nodes { gap: .5rem; }
  .group-node { padding: .65rem .55rem; }
  .group-heading { gap: .35rem; }
  .group-heading strong { font-size: .67rem; }
  .headset-chip { font-size: .54rem; }
  .feature-band { grid-template-columns: 1fr; }
  .feature-band > div { min-height: auto; padding: .85rem 0; }
  .feature-band > div + div { border-top: 1px solid var(--line); border-left: 0; }
  .group-explainer { grid-template-columns: 1fr; }
  .group-card > p { min-height: 0; }
  .demo-heading { display: block; }
  .demo-heading > p { margin-top: .9rem; }
  .tui-screen { padding: .55rem; font-size: .54rem; }
  .tui-status th:nth-child(2), .tui-status td:nth-child(2), .tui-status th:nth-child(5), .tui-status td:nth-child(5) { display: none; }
  .tui-lower { grid-template-columns: 1fr; }
  .tui-pane { min-height: 0; }
  .tui-pane p { white-space: normal; overflow-wrap: anywhere; }
  .tui-footer { font-size: .48rem; }
  .start-banner { align-items: flex-start; flex-direction: column; }
  footer { flex-wrap: wrap; justify-content: space-between; padding-block: 1.25rem; }
  footer > span { order: 3; width: 100%; text-align: left; }
}
@media (max-width: 360px) {
  .site-header nav { gap: .45rem; }
  .site-header nav a { font-size: .65rem; }
  .site-header nav .nav-cta { padding: .36rem .4rem; }
  .board-topline { font-size: .54rem; }
  .host-mode { display: none; }
  .tui-status th:nth-child(4), .tui-status td:nth-child(4) { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; }
}

:root[data-theme="light"] {
  color-scheme: light;
  --ink: #f8f6f0;
  --ink-raised: #fffdf8;
  --paper: #252936;
  --muted: #596070;
  --line: #dedbd2;
  --mint: #456d3a;
  --orange: #a45835;
  --quiet: #68705f;
  --surface-inset: #f1efe8;
  --inset-line: #dedbd2;
  --accent-ink: #fffdf8;
  --mint-hover: #36592e;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    color-scheme: light;
    --ink: #f8f6f0;
    --ink-raised: #fffdf8;
    --paper: #252936;
    --muted: #596070;
    --line: #dedbd2;
    --mint: #456d3a;
    --orange: #a45835;
    --quiet: #68705f;
    --surface-inset: #f1efe8;
    --inset-line: #dedbd2;
    --accent-ink: #fffdf8;
    --mint-hover: #36592e;
  }
}
:root[data-theme="light"] .group-card-dark { background: #eeece4; }
:root[data-theme="light"] .start-banner { border-color: #cbd7bd; background: #e9efdf; }
:root[data-theme="light"] .tui-card { --mint: #b9df75; --paper: #f4f0e6; --muted: #b2b5c1; }
:root[data-theme="light"] .player-panel { --muted: #b2b5c1; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .group-card-dark { background: #eeece4; }
  :root:not([data-theme]) .start-banner { border-color: #cbd7bd; background: #e9efdf; }
  :root:not([data-theme]) .tui-card { --mint: #b9df75; --paper: #f4f0e6; --muted: #b2b5c1; }
  :root:not([data-theme]) .player-panel { --muted: #b2b5c1; }
}
@media (max-width: 600px) {
  .theme-toggle { padding: .42rem .5rem; font-size: .68rem; }
}
@media (max-width: 360px) {
  .theme-toggle { padding: .36rem .4rem; font-size: .62rem; }
}