/* ---------- Tokens: dark-first (the un-stamped default on a dark OS) ---------- */
  :root {
    color-scheme: dark light;
    --ground:       #0B1416;
    --ground-deep:  #070F11;
    --surface:      #132126;
    --surface-alt:  #192B31;
    --ink:          #E7EEEC;
    --ink-soft:     #A7B9BA;
    --ink-faint:    #77898C;
    --line:         #26393E;
    --line-soft:    #1B2C31;
    --accent:       #5CC9C2;
    --accent-deep:  #8FDBD6;
    --accent-wash:  rgba(92, 201, 194, .10);
    --brass:        #D6A650;
    --brass-deep:   #E9C27A;
    --brass-wash:   rgba(214, 166, 80, .10);
    --focus:        #8FDBD6;
    --shadow:       0 1px 2px rgba(0,0,0,.35), 0 18px 40px -22px rgba(0,0,0,.7);
    --wing-vein:    rgba(92, 201, 194, .34);
    --wing-edge:    rgba(214, 166, 80, .55);
    --wing-stigma:  rgba(214, 166, 80, .28);
  }

  @media (prefers-color-scheme: light) {
    :root:not([data-theme="dark"]) {
      --ground:       #F1F5F3;
      --ground-deep:  #E6ECE9;
      --surface:      #FFFFFF;
      --surface-alt:  #E9EFEC;
      --ink:          #13232A;
      --ink-soft:     #4A5D63;
      --ink-faint:    #74868C;
      --line:         #CFDAD6;
      --line-soft:    #DFE7E3;
      --accent:       #0E6E75;
      --accent-deep:  #0A5257;
      --accent-wash:  rgba(14, 110, 117, .09);
      --brass:        #96641F;
      --brass-deep:   #7A5017;
      --brass-wash:   rgba(150, 100, 31, .10);
      --focus:        #0E6E75;
      --shadow:       0 1px 2px rgba(16,40,45,.06), 0 18px 40px -22px rgba(16,40,45,.25);
      --wing-vein:    rgba(14, 110, 117, .30);
      --wing-edge:    rgba(150, 100, 31, .55);
      --wing-stigma:  rgba(150, 100, 31, .22);
    }
  }
  :root[data-theme="light"] {
    --ground:       #F1F5F3;
    --ground-deep:  #E6ECE9;
    --surface:      #FFFFFF;
    --surface-alt:  #E9EFEC;
    --ink:          #13232A;
    --ink-soft:     #4A5D63;
    --ink-faint:    #74868C;
    --line:         #CFDAD6;
    --line-soft:    #DFE7E3;
    --accent:       #0E6E75;
    --accent-deep:  #0A5257;
    --accent-wash:  rgba(14, 110, 117, .09);
    --brass:        #96641F;
    --brass-deep:   #7A5017;
    --brass-wash:   rgba(150, 100, 31, .10);
    --focus:        #0E6E75;
    --shadow:       0 1px 2px rgba(16,40,45,.06), 0 18px 40px -22px rgba(16,40,45,.25);
    --wing-vein:    rgba(14, 110, 117, .30);
    --wing-edge:    rgba(150, 100, 31, .55);
    --wing-stigma:  rgba(150, 100, 31, .22);
  }

  /* ---------- Base ---------- */
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

  body {
    margin: 0;
    background: var(--ground);
    color: var(--ink);
    font-family: "Public Sans", "Segoe UI", system-ui, sans-serif;
    font-size: 17px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }

  :focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; border-radius: 2px; }

  a { color: var(--accent); text-decoration: none; }
  a:hover { color: var(--accent-deep); text-decoration: underline; text-underline-offset: 3px; }

  code, kbd, .mono {
    font-family: "JetBrains Mono", ui-monospace, Consolas, monospace;
    font-size: .92em;
  }
  code { color: var(--accent-deep); }

  h1, h2, h3 { text-wrap: balance; margin: 0; }
  .display {
    font-family: "Fraunces", "Iowan Old Style", Georgia, serif;
    font-variation-settings: "opsz" 144;
    font-weight: 300;
    letter-spacing: -.01em;
    line-height: 1.05;
  }
  .display em { font-style: italic; font-weight: 300; color: var(--brass); }

  .eyebrow {
    font-size: 12.5px;
    font-weight: 600;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--ink-faint);
  }
  .eyebrow .sep { margin: 0 .5em; color: var(--line); }

  .wrap { width: min(1120px, calc(100% - 48px)); margin-inline: auto; }
  .prose { max-width: 62ch; }
  p { margin: 0; }
  .lede { font-size: 19px; color: var(--ink-soft); line-height: 1.55; }
  .soft { color: var(--ink-soft); }

  section { padding-block: 88px; }
  section + section { border-top: 1px solid var(--line-soft); }
  .section-head { display: grid; gap: 14px; margin-bottom: 44px; }
  .section-head h2 { font-size: clamp(30px, 3.6vw, 40px); }

  /* ---------- Nav ---------- */
  .nav {
    position: sticky; top: 0; z-index: 10;
    background: color-mix(in srgb, var(--ground) 86%, transparent);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line-soft);
  }
  .nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 24px; }
  .wordmark {
    font-family: "Fraunces", Georgia, serif;
    font-variation-settings: "opsz" 40;
    font-weight: 400;
    font-size: 22px;
    color: var(--ink);
    display: inline-flex; align-items: center; gap: 10px;
  }
  .wordmark:hover { text-decoration: none; color: var(--ink); }
  .wordmark svg { width: 22px; height: 22px; color: var(--accent); }
  .nav-links { display: flex; gap: 26px; font-size: 14.5px; font-weight: 500; }
  .nav-links a { color: var(--ink-soft); }
  .nav-links a:hover { color: var(--ink); text-decoration: none; }
  @media (max-width: 640px) { .nav-links { display: none; } }

  /* ---------- Hero ---------- */
  .hero {
    position: relative;
    overflow: hidden;
    padding-block: 96px 80px;
    background: linear-gradient(180deg, var(--ground) 0%, var(--ground-deep) 100%);
    border-bottom: 1px solid var(--line-soft);
  }
  .hero canvas {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    pointer-events: none;
  }
  .hero .wrap { position: relative; }
  .hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(300px, .9fr);
    gap: 56px;
    align-items: end;
  }
  @media (max-width: 880px) { .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 40px; } }
  .hero h1 { font-size: clamp(44px, 6.4vw, 78px); margin-block: 22px 24px; max-width: 12ch; }
  .hero .lede { max-width: 52ch; }

  .facts {
    display: flex; flex-wrap: wrap; gap: 8px 28px;
    margin-top: 34px;
    font-size: 14px; color: var(--ink-soft);
  }
  .facts span::before {
    content: ""; display: inline-block; width: 5px; height: 5px; border-radius: 50%;
    background: var(--brass); margin-right: 10px; vertical-align: 2px;
  }

  /* Connection card — the one lifted object on the page */
  .connect {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 6px;
    box-shadow: var(--shadow);
    padding: 22px 24px 20px;
  }
  .connect .eyebrow { color: var(--brass); display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 6px 12px; }
  .connect .eyebrow .live { color: var(--ink-faint); letter-spacing: .08em; font-weight: 500; }
  .connect .eyebrow .live::before {
    content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%;
    background: var(--accent); margin-right: 7px; vertical-align: 1px;
    box-shadow: 0 0 0 3px var(--accent-wash);
  }
  .fields { display: grid; margin-top: 14px; }
  .field {
    display: grid; grid-template-columns: 84px minmax(0, 1fr) auto; align-items: center; gap: 14px;
    padding: 11px 0; border-top: 1px solid var(--line-soft);
  }
  .field:first-child { border-top: 0; }
  .field .k { font-size: 12.5px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-faint); }
  .field .v { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 17px; font-variant-numeric: tabular-nums; color: var(--ink); overflow-wrap: anywhere; }
  .field .v.plain { font-family: "Public Sans", system-ui, sans-serif; font-size: 15px; color: var(--ink-soft); }
  .copy {
    font: 500 12.5px "Public Sans", system-ui, sans-serif;
    color: var(--accent); background: transparent;
    border: 1px solid var(--line); border-radius: 4px;
    padding: 4px 10px; cursor: pointer; min-width: 64px;
  }
  .copy:hover { background: var(--accent-wash); border-color: var(--accent); }
  .copy[data-done] { color: var(--brass); border-color: var(--brass); }
  .connect .note { margin-top: 14px; font-size: 13.5px; color: var(--ink-faint); line-height: 1.5; }

  /* ---------- Steps ---------- */
  .steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 36px; }
  @media (max-width: 880px) { .steps { grid-template-columns: minmax(0, 1fr); gap: 28px; } }
  .step { display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 14px; align-items: start; }
  .step .n {
    font-family: "Fraunces", Georgia, serif; font-variation-settings: "opsz" 72;
    font-weight: 300; font-size: 40px; line-height: 1; color: var(--brass);
    font-variant-numeric: tabular-nums; margin-top: -2px;
  }
  .step h3 { font-size: 19px; font-weight: 600; margin-bottom: 8px; line-height: 1.3; }
  .step p { color: var(--ink-soft); font-size: 15.5px; }
  .step p + p { margin-top: 8px; }
  .cmdline {
    margin-top: 12px; padding: 10px 12px;
    background: var(--surface-alt); border: 1px solid var(--line-soft); border-radius: 4px;
    font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 12.5px; line-height: 1.5;
    color: var(--ink); overflow-x: auto; white-space: nowrap;
  }
  .cmdline b { font-weight: 500; color: var(--brass); }

  /* ---------- Features ---------- */
  .features {
    display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid var(--line); border-left: 1px solid var(--line);
  }
  @media (max-width: 960px) { .features { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
  @media (max-width: 600px) { .features { grid-template-columns: minmax(0, 1fr); } }
  .feature {
    padding: 26px 26px 24px;
    border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
    display: grid; grid-template-rows: auto 1fr auto; gap: 12px;
  }
  .feature.lead { background: var(--accent-wash); }
  /* A card left alone on the last row stretches across it, so an odd count reads as a
     deliberate closer rather than a leftover. */
  .feature:last-child:nth-child(3n + 1) { grid-column: 1 / -1; }
  .feature h3 {
    font-family: "Fraunces", Georgia, serif; font-variation-settings: "opsz" 40;
    font-weight: 400; font-size: 23px; line-height: 1.2;
  }
  .feature p { color: var(--ink-soft); font-size: 15px; }
  .feature p strong { color: var(--ink); font-weight: 600; }
  .feature .cmds { display: grid; gap: 5px; margin-top: 6px; font-size: 13.5px; }
  .feature .cmds div { display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
  .feature .cmds code { color: var(--accent-deep); white-space: nowrap; }
  .feature .cmds span { color: var(--ink-faint); }

  /* ---------- Rules ---------- */
  .rules-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 56px; align-items: start; }
  @media (max-width: 880px) { .rules-grid { grid-template-columns: minmax(0, 1fr); gap: 36px; } }
  .rules { display: grid; }
  .rule { padding: 20px 0; border-top: 1px solid var(--line-soft); display: grid; gap: 6px; }
  .rule:last-child { border-bottom: 1px solid var(--line-soft); }
  .rule h3 {
    font-family: "Fraunces", Georgia, serif; font-variation-settings: "opsz" 40;
    font-weight: 400; font-size: 22px;
  }
  .rule h3 strong { font-weight: 500; color: var(--brass); }
  .rule p { color: var(--ink-soft); font-size: 15.5px; }
  .aside {
    border-left: 2px solid var(--brass); padding: 4px 0 4px 18px;
    color: var(--ink-soft); font-size: 15.5px; margin-top: 26px;
  }

  /* ---------- Chat + audit, two columns ---------- */
  .two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 56px; }
  @media (max-width: 880px) { .two { grid-template-columns: minmax(0, 1fr); gap: 56px; } }
  .two h2 { font-size: clamp(26px, 3vw, 32px); margin: 12px 0 18px; }
  .chan { display: grid; margin-top: 20px; }
  .chan div { display: grid; grid-template-columns: minmax(120px, 170px) minmax(0, 1fr); gap: 16px; padding: 10px 0; border-top: 1px solid var(--line-soft); font-size: 15px; color: var(--ink-soft); }
  .chan div:last-child { border-bottom: 1px solid var(--line-soft); }
  .chan code { color: var(--ink); }
  .chan .relay { color: var(--brass); font-size: 11.5px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; margin-left: 8px; }
  .audit-list { margin: 18px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; color: var(--ink-soft); font-size: 15.5px; }
  .audit-list li { padding-left: 22px; position: relative; }
  .audit-list li::before { content: ""; position: absolute; left: 0; top: .62em; width: 10px; height: 1px; background: var(--brass); }

  /* ---------- Troubleshooting ---------- */
  .faq { display: grid; border-top: 1px solid var(--line-soft); }
  .faq details { border-bottom: 1px solid var(--line-soft); }
  .faq summary {
    cursor: pointer; list-style: none; padding: 18px 0;
    display: flex; justify-content: space-between; align-items: center; gap: 20px;
    font-weight: 500; font-size: 17px;
  }
  .faq summary::-webkit-details-marker { display: none; }
  .faq summary::after {
    content: "+"; font-family: "Fraunces", Georgia, serif; font-weight: 300; font-size: 26px; line-height: 1;
    color: var(--brass); flex: none; transition: transform .2s ease;
  }
  .faq details[open] summary::after { transform: rotate(45deg); }
  .faq details p { color: var(--ink-soft); font-size: 15.5px; padding-bottom: 20px; max-width: 66ch; }
  @media (prefers-reduced-motion: reduce) { .faq summary::after { transition: none; } }

  /* ---------- Footer ---------- */
  footer { border-top: 1px solid var(--line); padding-block: 44px 56px; color: var(--ink-faint); font-size: 14px; }
  footer .wrap { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 24px; align-items: start; }
  @media (max-width: 720px) { footer .wrap { grid-template-columns: minmax(0, 1fr); } }
  footer p { max-width: 60ch; line-height: 1.6; }
  footer .mono { color: var(--ink-soft); }

/* ---- subpages (changes.html) ---- */
.subpage { padding-top: 40px; }
.subpage h1.display { font-size: clamp(38px, 5vw, 56px); }
.changes .rule { gap: 8px; }
.changes .rule .eyebrow { margin-bottom: 2px; }
.button {
  display: inline-block; margin-top: 8px;
  padding: 11px 18px; border: 1px solid var(--accent); border-radius: 6px;
  color: var(--accent-deep); text-decoration: none; font-weight: 500; font-size: 15px;
}
.button:hover { background: var(--accent-wash); }
.nav-links a[aria-current="page"] { color: var(--ink); }

/* value tables inside a change entry (from the note's ``` blocks) */
.changes pre.values {
  margin: 4px 0 2px; padding: 12px 14px;
  background: var(--surface); border: 1px solid var(--line-soft); border-radius: 6px;
  color: var(--ink-soft); font-size: 13px; line-height: 1.5; overflow-x: auto;
}