:root {
    --navy: #14304F;
    --navy-2: #1B3D63;
    --ink: #14304F;
    --ink-2: #2F4A66;
    --muted: #5E7389;
    --line: #D9E3EC;
    --paper: #F7FAFC;
    --surface: #FFFFFF;
    --surface-2: #EEF5F9;
    --teal: #1E8C8C;
    --teal-ink: #167373;
    --green: #3CAE6C;
    --violet: #6B5FB5;
    --tile-bg: #FFFFFF;
    --tile-ink: #14304F;
    --tile-border: #14304F;
    --grad: linear-gradient(135deg, #14304F 0%, #1E8C8C 55%, #3CAE6C 100%);
    --grad-text: linear-gradient(90deg, #1E8C8C 0%, #3CAE6C 100%);
    --wash-1: rgba(30,140,140,.14);
    --wash-2: rgba(60,174,108,.12);
    --wash-3: rgba(20,48,79,.08);
    --shadow: 0 1px 2px rgba(20,48,79,.06), 0 16px 40px -20px rgba(20,48,79,.3);
    color-scheme: light;
  }
  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --ink: #EEF3F7; --ink-2: #C6D3DF; --muted: #8FA3B7; --line: #24384D;
      --paper: #070A0F; --surface: #111A26; --surface-2: #172433;
      --teal: #3EB8B8; --teal-ink: #6CD3D3; --green: #5BCB8A; --violet: #9A8FE0;
      --tile-bg: #070A0F; --tile-ink: #FFFFFF; --tile-border: #FFFFFF;
      --grad: linear-gradient(135deg, #1B3D63 0%, #1E8C8C 55%, #3CAE6C 100%);
      --wash-1: rgba(62,184,184,.12); --wash-2: rgba(91,203,138,.10); --wash-3: rgba(255,255,255,.04);
      --shadow: 0 1px 2px rgba(0,0,0,.5), 0 16px 40px -20px rgba(0,0,0,.7);
      color-scheme: dark;
    }
  }
  :root[data-theme="dark"] {
    --ink: #EEF3F7; --ink-2: #C6D3DF; --muted: #8FA3B7; --line: #24384D;
    --paper: #070A0F; --surface: #111A26; --surface-2: #172433;
    --teal: #3EB8B8; --teal-ink: #6CD3D3; --green: #5BCB8A; --violet: #9A8FE0;
    --tile-bg: #070A0F; --tile-ink: #FFFFFF; --tile-border: #FFFFFF;
    --grad: linear-gradient(135deg, #1B3D63 0%, #1E8C8C 55%, #3CAE6C 100%);
    --wash-1: rgba(62,184,184,.12); --wash-2: rgba(91,203,138,.10); --wash-3: rgba(255,255,255,.04);
    --shadow: 0 1px 2px rgba(0,0,0,.5), 0 16px 40px -20px rgba(0,0,0,.7);
    color-scheme: dark;
  }

  * { box-sizing: border-box; }
  body {
    margin: 0; background: var(--paper); color: var(--ink);
    font-family: "IBM Plex Sans", "Segoe UI", Helvetica, Arial, sans-serif;
    font-size: 17px; line-height: 1.6;
    padding-inline: clamp(16px, 4vw, 40px); padding-block: 0;
    background-image:
      radial-gradient(900px 520px at 85% -10%, var(--wash-1), transparent 60%),
      radial-gradient(700px 420px at -10% 30%, var(--wash-2), transparent 60%);
    background-repeat: no-repeat;
  }
  .wrap { max-width: 1140px; margin: 0 auto; }
  h1, h2, h3, .display { font-family: "Montserrat", "IBM Plex Sans", Helvetica, Arial, sans-serif; line-height: 1.1; margin: 0; text-wrap: balance; letter-spacing: -0.015em; }
  h1 { font-size: clamp(2.4rem, 6vw, 4.4rem); font-weight: 700; }
  h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 700; }
  h3 { font-size: 1.1rem; font-weight: 700; }
  p { margin: 0; max-width: 62ch; }
  a { color: var(--teal-ink); }
  .caps { font-family: "Montserrat", sans-serif; font-size: .74rem; letter-spacing: .22em; text-transform: uppercase; color: var(--ink-2); font-weight: 500; }
  .caps.accent { color: var(--teal-ink); font-weight: 600; }
  .mono { font-family: "IBM Plex Mono", ui-monospace, Menlo, monospace; }
  .muted { color: var(--muted); }
  .num { font-variant-numeric: tabular-nums; }
  .grad-text { background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }
  .rule { display: inline-block; width: 56px; height: 3px; background: var(--grad-text); border-radius: 2px; }

  /* header */
  header { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 22px; flex-wrap: wrap; }
  .brand { display: flex; align-items: center; gap: 14px; text-decoration: none; color: var(--ink); }
  .brand-name { font-family: "Montserrat", sans-serif; font-weight: 700; font-size: .95rem; line-height: 1.15; letter-spacing: .02em; text-transform: uppercase; }
  .brand-name small { display: block; font-family: "Montserrat", sans-serif; font-weight: 500; color: var(--muted); font-size: .66rem; letter-spacing: .2em; margin-top: 4px; }
  nav { display: flex; gap: 24px; flex-wrap: wrap; font-size: .92rem; }
  nav a { color: var(--ink-2); text-decoration: none; font-weight: 500; }
  nav a:hover, nav a:focus-visible { color: var(--teal-ink); text-decoration: underline; text-underline-offset: 5px; }
  .btn { display: inline-block; padding: 13px 22px; border-radius: 10px; background: var(--navy); color: #fff; font-family: "Montserrat", sans-serif; font-weight: 600; font-size: .92rem; text-decoration: none; border: 0; cursor: pointer; }
  .btn.grad { background: var(--grad); }
  .btn:hover, .btn:focus-visible { filter: brightness(1.1); }
  .btn.ghost { background: transparent; color: var(--ink); border: 1.5px solid var(--line); }
  :focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; }

  /* the element tile */
  .tile { position: relative; background: var(--tile-bg); color: var(--tile-ink); border: 3px solid var(--tile-border); border-radius: 12px; display: grid; place-items: center; font-family: "Montserrat", sans-serif; flex: 0 0 auto; }
  .tile .vs { font-weight: 800; letter-spacing: -.05em; line-height: 1; }
  .tile .tl, .tile .tr { position: absolute; font-weight: 600; }
  .tile .tl { left: 9%; top: 6%; }
  .tile .tr { right: 9%; top: 5%; }
  .tile .nm { position: absolute; bottom: 9%; left: 0; right: 0; text-align: center; font-weight: 600; line-height: 1.1; }
  .tile.sm { width: 46px; height: 46px; border-width: 2px; border-radius: 7px; }
  .tile.sm .vs { font-size: 1.25rem; }
  .tile.sm .tl { display: none; }
  .tile.sm .tr { font-size: .5rem; right: 12%; top: 8%; }
  .tile.sm .nm { display: none; }
  .tile.hero-tile { width: clamp(180px, 22vw, 250px); aspect-ratio: 1; }
  .tile.hero-tile .vs { font-size: clamp(5.2rem, 11vw, 7.6rem); margin-top: -8%; }
  .tile.hero-tile .tl { font-size: clamp(.9rem, 1.6vw, 1.15rem); }
  .tile.hero-tile .tr { font-size: clamp(1.3rem, 2.4vw, 1.75rem); }
  .tile.hero-tile .nm { font-size: clamp(.78rem, 1.4vw, 1rem); }

  /* hero */
  .hero { display: grid; grid-template-columns: auto 1px 1fr; gap: clamp(20px, 4vw, 44px); align-items: center; padding-block: 56px 40px; }
  .hero .vline { width: 1px; align-self: stretch; background: var(--line); }
  .hero h1 { line-height: 1.02; }
  .hero .sub { margin-top: 14px; }
  .hero .pillars { display: flex; gap: 22px; flex-wrap: wrap; margin-top: 22px; }
  .hero .pillars span { font-family: "Montserrat", sans-serif; font-size: .72rem; letter-spacing: .22em; text-transform: uppercase; color: var(--muted); font-weight: 500; }
  .lede { display: grid; grid-template-columns: 1.1fr .9fr; gap: 44px; align-items: center; padding-block: 8px 56px; }
  .lede .lead { font-size: 1.15rem; color: var(--ink-2); }
  .lede .lead b { color: var(--ink); font-weight: 600; }
  .lede .cta { display: flex; gap: 12px; margin-top: 26px; flex-wrap: wrap; align-items: center; }
  .lede .cta small { color: var(--muted); font-size: .85rem; }

  /* the interview card */
  .talk { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); overflow: hidden; }
  .talk .bar { display: flex; justify-content: space-between; align-items: center; padding: 10px 16px; border-bottom: 1px solid var(--line); font-size: .78rem; color: var(--muted); }
  .talk .bar b { color: var(--ink); font-weight: 600; font-family: "Montserrat", sans-serif; }
  .turns { padding: 16px; display: grid; gap: 12px; font-size: .93rem; }
  .turn { display: grid; grid-template-columns: 84px 1fr; gap: 10px; }
  .turn .who { font-family: "Montserrat", sans-serif; font-size: .66rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); padding-top: 4px; font-weight: 600; }
  .turn.agent .who { color: var(--teal-ink); }
  .turn p { max-width: none; }
  .artifact { border-top: 1px dashed var(--line); background: linear-gradient(180deg, var(--wash-1), transparent); padding: 14px 16px; font-size: .82rem; }
  .artifact .cap { font-family: "Montserrat", sans-serif; font-size: .66rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; font-weight: 600; }
  .artifact table { border-collapse: collapse; width: 100%; }
  .artifact th, .artifact td { text-align: left; padding: 5px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
  .artifact th { font-weight: 600; color: var(--ink-2); }
  .flag { color: var(--teal-ink); font-weight: 500; }
  .flag.warn { color: #B4571A; }
  :root[data-theme="dark"] .flag.warn { color: #F0A05A; }
  @media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .flag.warn { color: #F0A05A; } }

  section { padding-block: 60px; }
  .sec-head { display: grid; gap: 12px; margin-bottom: 34px; max-width: 72ch; }
  .sec-head .caps { margin-bottom: 2px; }

  /* value chain */
  .chain-wrap { overflow-x: auto; padding-bottom: 6px; }
  .chain { display: grid; grid-template-columns: repeat(7, minmax(128px, 1fr)); gap: 6px; min-width: 900px; }
  .stage { position: relative; isolation: isolate; padding: 46px 12px 14px; text-align: center; font-family: "Montserrat", sans-serif; font-size: .66rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 700; line-height: 1.4; }
  .stage::before { content: ""; position: absolute; inset: 20px 0 0 0; z-index: -1; background: var(--sbg); border-radius: 6px;
    clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 50%, calc(100% - 14px) 100%, 0 100%, 14px 50%); }
  .stage .ic { position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 40px; height: 40px; border-radius: 50%; background: var(--surface); border: 2px solid currentColor; display: grid; place-items: center; }
  .stage .ic svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
  .s1 { --sbg: #DCEBF8; color: #2456A6; } .s2 { --sbg: #D5EEF3; color: #1E6F8F; } .s3 { --sbg: #CFEFEA; color: #1E8C8C; }
  .s4 { --sbg: #D3F1DE; color: #2E8F5A; } .s5 { --sbg: #CFEEDD; color: #2E9E5B; } .s6 { --sbg: #E3E0F4; color: #6B5FB5; } .s7 { --sbg: #DDD8F0; color: #5A4EA8; }
  :root[data-theme="dark"] .stage { --sbg: var(--surface); } :root[data-theme="dark"] .stage .ic { background: var(--surface); }
  @media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .stage { --sbg: var(--surface); } :root:not([data-theme="light"]) .stage .ic { background: var(--surface); } }
  .stage.on::after { content: ""; position: absolute; left: 22px; right: 22px; bottom: 6px; height: 3px; background: currentColor; border-radius: 2px; }
  .chain-note { margin-top: 30px; display: grid; grid-template-columns: repeat(7, minmax(128px, 1fr)); gap: 6px; min-width: 900px; }
  .chain-note div { font-size: .8rem; color: var(--muted); padding-inline: 10px; }
  .chain-note div.on { color: var(--ink-2); font-weight: 500; }
  .chain-key { margin-top: 22px; display: flex; gap: 10px; align-items: center; font-size: .9rem; color: var(--ink-2); }
  .chain-key i { display: inline-block; width: 26px; height: 3px; background: var(--teal); border-radius: 2px; }

  /* evidence */
  .evidence { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
  .ev { display: grid; gap: 8px; padding: 24px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line); }
  .ev .big { font-family: "Montserrat", sans-serif; font-size: 2.7rem; font-weight: 800; line-height: 1; letter-spacing: -.03em; }
  .ev .big span { font-size: 1rem; color: var(--muted); font-weight: 600; margin-left: 5px; letter-spacing: 0; }
  .ev p { font-size: .95rem; color: var(--ink-2); }
  .ev .src { font-size: .78rem; color: var(--muted); }

  /* steps / tiers */
  .steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
  .step { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 26px; display: grid; gap: 12px; align-content: start; }
  .step .k { font-family: "Montserrat", sans-serif; font-size: .68rem; letter-spacing: .22em; color: var(--teal-ink); font-weight: 700; }
  .step ul { margin: 0; padding-left: 18px; color: var(--ink-2); font-size: .95rem; display: grid; gap: 6px; }
  .step .gate { margin-top: 6px; padding: 12px 14px; border-radius: 10px; background: linear-gradient(135deg, var(--wash-1), var(--wash-2)); font-size: .88rem; color: var(--ink-2); }
  .step .gate b { color: var(--ink); }
  .step.lead { border-color: transparent; background: linear-gradient(var(--surface), var(--surface)) padding-box, var(--grad) border-box; border: 2px solid transparent; box-shadow: var(--shadow); }
  .step .terms { font-family: "Montserrat", sans-serif; font-weight: 600; font-size: .92rem; color: var(--ink); }
  .step .terms small { display: block; font-family: "IBM Plex Sans", sans-serif; font-weight: 400; color: var(--muted); font-size: .85rem; margin-top: 2px; }

  /* two column */
  .two { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: start; }
  .two h3 { margin-bottom: 8px; }
  .list { display: grid; gap: 20px; }
  .list p { color: var(--ink-2); }
  .quote { border-left: 3px solid var(--green); padding-left: 20px; font-size: 1.15rem; color: var(--ink); font-style: italic; max-width: 40ch; }
  .quote cite { display: block; font-style: normal; font-size: .85rem; color: var(--muted); margin-top: 8px; }

  /* market */
  .market { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
  .mk { padding: 20px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; display: grid; gap: 4px; }
  .mk .v { font-family: "Montserrat", sans-serif; font-weight: 800; font-size: 1.6rem; letter-spacing: -.02em; }
  .mk .l { font-size: .9rem; color: var(--ink-2); }
  .mk .s { font-size: .78rem; color: var(--muted); }

  /* multiplied band */
  .mult { text-align: center; padding-block: 40px 10px; display: grid; gap: 14px; justify-items: center; }
  .mult .display { font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
  .mult .x { font-family: "Montserrat", sans-serif; font-size: .74rem; letter-spacing: .3em; text-transform: uppercase; color: var(--muted); font-weight: 500; }

  /* cta */
  .cta-band { background: var(--grad); color: #fff; border-radius: 18px; padding: 46px; display: grid; grid-template-columns: 1.3fr .7fr; gap: 32px; align-items: center; margin-block: 24px 48px; }
  .cta-band h2 { color: #fff; }
  .cta-band p { color: rgba(255,255,255,.9); margin-top: 10px; }
  .cta-band .btn { background: #fff; color: #14304F; justify-self: start; }
  .cta-band ol { margin: 0; padding-left: 18px; color: rgba(255,255,255,.94); font-size: .95rem; display: grid; gap: 6px; }
  .cta-band .caps { color: rgba(255,255,255,.8); }

  footer { border-top: 1px solid var(--line); padding-block: 28px 40px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: .85rem; color: var(--muted); }
  footer a { color: var(--muted); }

  @media (max-width: 900px) {
    .hero { grid-template-columns: 1fr; }
    .hero .vline { display: none; }
    .lede, .two, .cta-band { grid-template-columns: 1fr; }
    .evidence, .steps { grid-template-columns: 1fr; }
    .market { grid-template-columns: 1fr 1fr; }
    .cta-band { padding: 28px; }
  }
  @media (max-width: 480px) { .market { grid-template-columns: 1fr; } .turn { grid-template-columns: 1fr; gap: 2px; } }

/* multi-page additions */
nav a[aria-current="page"] { color: var(--teal-ink); font-weight: 600; text-decoration: underline; text-underline-offset: 5px; }
.page-head { padding-block: 48px 8px; display: grid; gap: 12px; max-width: 72ch; }
.page-head h1 { font-size: clamp(2rem, 4.2vw, 3rem); }
.next { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-block: 24px 48px; border-top: 1px solid var(--line); margin-top: 24px; }
.next a { font-family: "Montserrat", sans-serif; font-weight: 600; text-decoration: none; color: var(--ink); }
.next a span { display: block; font-family: "IBM Plex Sans", sans-serif; font-weight: 400; font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 4px; }
.next a:hover, .next a:focus-visible { color: var(--teal-ink); }
.teaser { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.teaser a { display: grid; gap: 8px; padding: 22px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line); text-decoration: none; color: var(--ink); }
.teaser a:hover, .teaser a:focus-visible { border-color: var(--teal); }
.teaser a p { color: var(--ink-2); font-size: .95rem; }
.teaser a .go { color: var(--teal-ink); font-weight: 600; font-size: .9rem; font-family: "Montserrat", sans-serif; }
.proto { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 22px 24px; font-size: .9rem; }
.proto h4 { font-family: "Montserrat", sans-serif; font-size: .7rem; letter-spacing: .18em; text-transform: uppercase; color: var(--teal-ink); margin: 0 0 10px; }
.proto ol { margin: 0; padding-left: 20px; display: grid; gap: 8px; color: var(--ink-2); }
.proto ol li b { color: var(--ink); font-weight: 600; }
.faq { display: grid; gap: 18px; max-width: 72ch; }
.faq details { border: 1px solid var(--line); border-radius: 12px; background: var(--surface); padding: 14px 18px; }
.faq summary { font-family: "Montserrat", sans-serif; font-weight: 600; cursor: pointer; color: var(--ink); }
.faq details p { margin-top: 10px; color: var(--ink-2); }
.page-hidden { display: none; }
@media (max-width: 900px) { .teaser { grid-template-columns: 1fr; } }

/* walkthrough carousel */
.carousel { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); overflow: hidden; }
.frames { position: relative; min-height: 260px; }
.frame { display: none; padding: 40px clamp(20px, 5vw, 56px); background: linear-gradient(135deg, var(--wash-1), transparent 60%); }
.frame.on { display: grid; gap: 14px; align-content: center; min-height: 260px; }
.fr-eyebrow { font-family: "Montserrat", sans-serif; font-size: .7rem; letter-spacing: .22em; text-transform: uppercase; color: var(--teal-ink); font-weight: 700; }
.fr-title { font-family: "Montserrat", sans-serif; font-size: clamp(1.3rem, 2.6vw, 1.9rem); font-weight: 700; line-height: 1.2; max-width: 26ch; text-wrap: balance; }
.frame p { color: var(--ink-2); max-width: 60ch; }
.ctrl { display: flex; align-items: center; gap: 12px; padding: 14px 18px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.ctrl .btn { padding: 8px 14px; }
.dots { display: flex; gap: 8px; margin-inline: auto; }
.dot { width: 10px; height: 10px; border-radius: 50%; border: 0; background: var(--line); cursor: pointer; padding: 0; }
.dot.on { background: var(--teal); }
@media (prefers-reduced-motion: no-preference) { .frame.on { animation: fade .35s ease; } @keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } } }

/* protocol output card (home) */
.doc { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); overflow: hidden; font-size: .9rem; }
.doc .bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 16px; border-bottom: 1px solid var(--line); font-size: .78rem; color: var(--muted); flex-wrap: wrap; }
.doc .bar b { color: var(--ink); font-family: "Montserrat", sans-serif; font-weight: 600; }
.doc-body { padding: 16px; display: grid; gap: 12px; }
.doc-h { font-family: "Montserrat", sans-serif; font-size: .66rem; letter-spacing: .14em; text-transform: uppercase; color: var(--teal-ink); font-weight: 700; }
.doc-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.doc-steps li { display: grid; grid-template-columns: 30px 1fr; gap: 8px; color: var(--ink-2); line-height: 1.45; }
.doc-steps .n { font-family: "IBM Plex Mono", monospace; color: var(--muted); font-size: .8rem; padding-top: 2px; }
.doc-map { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.doc-map div { display: grid; gap: 2px; padding: 10px 12px; border-radius: 10px; background: linear-gradient(135deg, var(--wash-1), var(--wash-2)); }
.doc-map b { font-family: "Montserrat", sans-serif; font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; color: var(--ink); font-weight: 700; }
.doc-map span { color: var(--ink-2); font-size: .85rem; }
.doc-foot { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 16px; border-top: 1px dashed var(--line); font-size: .78rem; flex-wrap: wrap; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border-radius: 999px; background: var(--grad); color: #fff; font-family: "Montserrat", sans-serif; font-weight: 600; font-size: .74rem; }
.pill::before { content: "✓"; font-size: .8rem; }
@media (max-width: 480px) { .doc-map { grid-template-columns: 1fr; } }

/* chat rendering of the session */
.chat { background: var(--surface); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); overflow: hidden; }
.chat-bar { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--line); font-size: .85rem; }
.chat-bar > span:nth-child(2) { display: grid; line-height: 1.2; }
.chat-bar b { font-family: "Montserrat", sans-serif; font-weight: 700; color: var(--ink); }
.chat-bar small { color: var(--muted); font-size: .75rem; }
.chat-bar > span:last-child { margin-left: auto; font-size: .75rem; }
.chat-avatar { position: relative; width: 34px; height: 34px; border-radius: 8px; border: 2px solid var(--tile-border); background: var(--tile-bg); color: var(--tile-ink); display: grid; place-items: center; font-family: "Montserrat", sans-serif; font-weight: 800; font-size: .8rem; letter-spacing: -.04em; flex: 0 0 auto; }
.chat-avatar sup { position: absolute; top: 1px; right: 3px; font-size: .45rem; font-weight: 600; }
.chat-log { padding: 16px; display: grid; gap: 10px; background: linear-gradient(180deg, var(--wash-3), transparent 30%); }
.msg { display: flex; }
.msg .bubble { max-width: 82%; padding: 10px 14px; border-radius: 16px; font-size: .93rem; line-height: 1.45; }
.msg.agent { justify-content: flex-start; }
.msg.agent .bubble { background: var(--surface-2); color: var(--ink); border-bottom-left-radius: 4px; border: 1px solid var(--line); }
.msg.me { justify-content: flex-end; }
.msg.me .bubble { background: var(--navy); color: #fff; border-bottom-right-radius: 4px; }
:root[data-theme="dark"] .msg.me .bubble { background: var(--teal); color: #061218; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .msg.me .bubble { background: var(--teal); color: #061218; } }
.msg.typing .bubble { display: flex; gap: 5px; align-items: center; padding: 12px 14px; }
.msg.typing .bubble span { width: 7px; height: 7px; border-radius: 50%; background: currentColor; opacity: .45; }
@media (prefers-reduced-motion: no-preference) {
  .msg.typing .bubble span { animation: blink 1.2s infinite; }
  .msg.typing .bubble span:nth-child(2) { animation-delay: .2s; } .msg.typing .bubble span:nth-child(3) { animation-delay: .4s; }
  @keyframes blink { 0%, 80%, 100% { opacity: .25; } 40% { opacity: .9; } }
}
.chat-extract { border-top: 1px dashed var(--line); background: linear-gradient(180deg, var(--wash-1), transparent); padding: 14px 16px; font-size: .82rem; }
.chat-extract .cap { font-family: "Montserrat", sans-serif; font-size: .66rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; font-weight: 600; }
.chat-extract table { border-collapse: collapse; width: 100%; }
.chat-extract th, .chat-extract td { text-align: left; padding: 5px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
.chat-extract th { font-weight: 600; color: var(--ink-2); }

/* image frames */
.frame img { display: block; width: 100%; height: auto; max-width: 100%; }
.frame.on:has(img) { padding: 0; background: none; min-height: 0; display: block; }
.frames:has(img) { min-height: 0; }

/* page head inside a two-column first section */
section.first { padding-top: 40px; }
.page-head.inline { padding-block: 0 12px; }
.page-head.inline h1 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); }