* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--text); background: var(--ink); font-family: var(--sans); line-height: 1.6; -webkit-font-smoothing: antialiased; }
body::before { content: ""; position: fixed; inset: 0; pointer-events: none; z-index: -1; background: radial-gradient(circle at 80% 5%, rgba(47,140,255,.10), transparent 28%), linear-gradient(rgba(255,255,255,.012) 1px, transparent 1px); background-size: auto, 100% 42px; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
.skip { position: fixed; left: 1rem; top: -8rem; z-index: 1000; background: var(--text); color: var(--ink); padding: .7rem 1rem; }
.skip:focus { top: 1rem; }
.shell { width: min(var(--max), calc(100% - 40px)); margin-inline: auto; }
.site-header { position: sticky; top: 0; z-index: 50; border-bottom: 1px solid var(--line); background: rgba(5,8,13,.88); backdrop-filter: blur(18px); }
.nav { min-height: 76px; display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 760; letter-spacing: -.025em; white-space: nowrap; }
.brand-mark { width: 24px; height: 24px; border: 1px solid var(--cobalt-soft); border-radius: 50%; position: relative; box-shadow: inset 0 0 20px rgba(47,140,255,.28); }
.brand-mark::before, .brand-mark::after { content: ""; position: absolute; border-radius: 50%; }
.brand-mark::before { width: 6px; height: 6px; left: 8px; top: 8px; background: var(--amber); box-shadow: 0 0 16px var(--amber); }
.brand-mark::after { inset: 3px; border: 1px dashed rgba(94,214,179,.55); }
.nav-links { margin-left: auto; display: flex; align-items: center; gap: 20px; font-size: .86rem; color: var(--muted); }
.nav-links a { padding: 26px 0 22px; border-bottom: 2px solid transparent; transition: color .2s, border-color .2s; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); border-color: var(--cobalt); }
.nav-cta { padding: 10px 15px !important; border: 1px solid var(--line-strong) !important; border-radius: 2px; color: var(--text) !important; }
.menu-toggle { display: none; margin-left: auto; border: 1px solid var(--line); background: transparent; color: var(--text); padding: 8px 10px; }
.hero { min-height: 560px; display: grid; align-items: center; position: relative; overflow: hidden; border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; grid-template-columns: .86fr 1.14fr; gap: 42px; align-items: center; padding: 64px 0; }
.hero-copy { position: relative; z-index: 2; }
h1, h2, h3 { margin: 0; line-height: 1.12; letter-spacing: -.035em; text-wrap: balance; }
/* ONE-OFF 2026-08-04 (GC): type scale cut after product-six overlay — CPN. */
h1 { font-size: clamp(2.1rem, 4.2vw, 3.25rem); max-width: 18ch; }
h2 { font-size: clamp(1.55rem, 2.6vw, 2.35rem); }
h3 { font-size: clamp(1.12rem, 1.5vw, 1.35rem); letter-spacing: -.02em; }
.lead { max-width: 650px; color: #c1ccd4; font-size: clamp(1rem, 1.2vw, 1.12rem); margin: 20px 0 0; line-height: 1.55; }
.hero-art { min-width: 0; display: flex; justify-content: flex-end; align-self: center; filter: saturate(.92) contrast(1.04); }
.hero-art img {
  display: block;
  height: clamp(200px, 30vw, 360px);
  width: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  object-position: center;
  border-radius: 2px;
  box-shadow: var(--shadow);
}
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 19px; border: 1px solid var(--line-strong); background: transparent; color: var(--text); cursor: pointer; transition: transform .2s, background .2s, border-color .2s; }
.button:hover { transform: translateY(-2px); border-color: var(--cobalt-soft); }
.button.primary { background: var(--cobalt); border-color: var(--cobalt); color: white; }
.micro { margin-top: 28px; color: var(--muted); font-family: var(--mono); font-size: .76rem; letter-spacing: .02em; }
.band { padding: 105px 0; border-bottom: 1px solid var(--line); }
.band.compact { padding: 72px 0; }
.band.tint { background: var(--ink-2); }
.section-head { display: grid; grid-template-columns: .72fr 1.28fr; gap: 60px; margin-bottom: 55px; align-items: end; }
.section-head p { margin: 0; max-width: 650px; color: var(--muted); font-size: 1.08rem; }
.kicker { font-family: var(--mono); font-size: .73rem; color: var(--sea); text-transform: uppercase; letter-spacing: .12em; margin-bottom: 18px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 66px; align-items: center; }
.media-frame {
  display: block;
  width: fit-content;
  max-width: 100%;
  justify-self: center;
  align-self: center;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.media-frame img {
  display: block;
  height: clamp(200px, 30vw, 360px);
  width: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  object-position: center;
}
.stakes, .evidence-grid, .system-grid, .lane-grid { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.stakes { grid-template-columns: repeat(3, 1fr); }
.evidence-grid { grid-template-columns: repeat(4, 1fr); }
.system-grid { grid-template-columns: repeat(2, 1fr); }
.lane-grid { grid-template-columns: repeat(3, 1fr); }
.panel { background: var(--ink); padding: 30px; min-height: 100%; }
.panel p { color: var(--muted); margin: 13px 0 0; }
.index { font-family: var(--mono); color: var(--cobalt-soft); font-size: .75rem; margin-bottom: 34px; }
.status { display: inline-flex; align-items: center; gap: 8px; color: var(--sea); font-family: var(--mono); font-size: .72rem; margin-top: 20px; text-transform: uppercase; letter-spacing: .08em; }
.status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; box-shadow: 0 0 10px currentColor; }
.status.designed { color: var(--cobalt-soft); }
.status.research { color: var(--amber); }
.prose { max-width: 780px; }
.prose p, .prose li { color: #c0cbd3; font-size: 1.05rem; }
.prose strong { color: var(--text); }
.prose ul { padding-left: 1.2rem; }
.spaced-heading { margin-top: 30px; }
.principles { counter-reset: principle; border-top: 1px solid var(--line); }
.principle { counter-increment: principle; display: grid; grid-template-columns: 90px 1fr 1.2fr; gap: 30px; padding: 34px 0; border-bottom: 1px solid var(--line); }
.principle::before { content: "0" counter(principle); color: var(--cobalt-soft); font-family: var(--mono); }
.principle p { margin: 0; color: var(--muted); }
.receipt { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 40px; }
.receipt-step { position: relative; min-height: 190px; padding: 23px; border: 1px solid var(--line-strong); background: #07101a; }
.receipt-step::after { content: ""; position: absolute; right: -11px; top: 50%; width: 10px; border-top: 1px solid var(--cobalt); }
.receipt-step:last-child::after { display: none; }
.receipt-step b { display: block; margin-bottom: 18px; font-family: var(--mono); font-size: .75rem; color: var(--cobalt-soft); }
.receipt-step p { color: var(--muted); font-family: var(--mono); font-size: .78rem; }
.receipt-step[data-state="active"] { border-color: var(--sea); box-shadow: inset 0 0 34px rgba(94,214,179,.08); }
.receipt-result { margin-top: 16px; color: var(--sea); min-height: 1.6em; font-family: var(--mono); font-size: .8rem; }
.quote { font-size: clamp(1.3rem, 2.1vw, 1.85rem); line-height: 1.28; letter-spacing: -.02em; max-width: 28ch; }
.quote + p { color: var(--muted); max-width: 680px; }
.link-list { border-top: 1px solid var(--line); }
.link-row { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; padding: 25px 0; border-bottom: 1px solid var(--line); }
.link-row span { color: var(--muted); }
.link-row:hover strong { color: var(--cobalt-soft); }
.form { display: grid; gap: 18px; }
.field { display: grid; gap: 7px; }
.field label { color: var(--muted); font-size: .84rem; }
.field input, .field textarea { width: 100%; border: 1px solid var(--line-strong); border-radius: 0; background: rgba(5,8,13,.68); color: var(--text); padding: 14px; outline: none; }
.field input:focus, .field textarea:focus { border-color: var(--cobalt); box-shadow: 0 0 0 3px rgba(47,140,255,.12); }
.field textarea { min-height: 150px; resize: vertical; }
.form-note { color: var(--muted); font-size: .83rem; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.site-guide { position: fixed; right: 22px; bottom: 22px; z-index: 90; font-family: var(--sans); }
.site-guide-launch { display: inline-flex; align-items: center; gap: 10px; min-height: 48px; padding: 0 18px; border: 1px solid rgba(94,214,179,.5); border-radius: 999px; background: rgba(7,16,26,.96); color: var(--text); box-shadow: 0 16px 50px rgba(0,0,0,.38); cursor: pointer; }
.site-guide-launch:hover, .site-guide-launch:focus-visible { border-color: var(--sea); transform: translateY(-2px); }
.site-guide-spark { width: 9px; height: 9px; border-radius: 50%; background: var(--sea); box-shadow: 0 0 14px var(--sea); }
.site-guide-panel { position: absolute; right: 0; bottom: 0; width: min(560px, calc(100vw - 24px)); height: min(82vh, calc(100vh - 24px)); border: 1px solid var(--line-strong); background: rgba(5,8,13,.985); box-shadow: 0 24px 80px rgba(0,0,0,.62); overflow: hidden; }
.site-guide-panel[hidden] { display: none; }
.site-guide-header { min-height: 52px; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 10px 14px 9px 16px; border-bottom: 1px solid var(--line); background: #07101a; }
.site-guide-header strong { display: block; font-size: 1rem; }
.site-guide-header span { display: flex; align-items: center; gap: 7px; margin-top: 2px; color: var(--muted); font-family: var(--mono); font-size: .62rem; text-transform: uppercase; letter-spacing: .06em; }
.site-guide-header i { width: 6px; height: 6px; border-radius: 50%; background: var(--sea); box-shadow: 0 0 8px var(--sea); }
.site-guide-close { width: 36px; height: 36px; border: 0; background: transparent; color: var(--muted); font-size: 1.6rem; line-height: 1; cursor: pointer; }
.site-guide-close:hover, .site-guide-close:focus-visible { color: var(--text); }
.site-guide-disclosure { padding: 5px 16px; border-bottom: 1px solid var(--line); color: var(--cobalt-soft); font-family: var(--mono); font-size: .6rem; letter-spacing: .035em; }
.site-guide-log { height: auto; min-height: 0; overflow-y: auto; padding: 16px 18px; overscroll-behavior: contain; }
.site-guide-entry + .site-guide-entry { margin-top: 12px; }
.site-guide-message { width: fit-content; max-width: 100%; padding: 12px 14px; border: 1px solid var(--line); white-space: pre-wrap; font-size: .95rem; line-height: 1.55; }
.site-guide-message.assistant { background: #09131e; color: #dce4ea; max-width: 100%; }
.site-guide-message.user { margin-left: auto; max-width: 88%; border-color: rgba(47,140,255,.45); background: rgba(47,140,255,.13); color: var(--text); }
.site-guide-sources { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }
.site-guide-sources a { padding: 4px 7px; border: 1px solid var(--line); color: var(--cobalt-soft); font-family: var(--mono); font-size: .62rem; }
.site-guide-sources a:hover, .site-guide-sources a:focus-visible { border-color: var(--cobalt-soft); color: var(--text); }
.site-guide-prompts { display: flex; gap: 6px; overflow-x: auto; padding: 0 16px 10px; scrollbar-width: thin; }
.site-guide-prompts button { flex: 0 0 auto; max-width: 240px; padding: 6px 10px; border: 1px solid var(--line); background: transparent; color: var(--muted); font-size: .72rem; cursor: pointer; }
.site-guide-prompts button:hover, .site-guide-prompts button:focus-visible { border-color: var(--cobalt-soft); color: var(--text); }
.site-guide-form { display: grid; grid-template-columns: 1fr auto; gap: 8px; padding: 0 16px; }
.site-guide-form textarea { min-height: 48px; max-height: 96px; resize: vertical; border: 1px solid var(--line-strong); border-radius: 0; background: rgba(5,8,13,.8); color: var(--text); padding: 10px 11px; outline: none; line-height: 1.35; }
.site-guide-form textarea:focus { border-color: var(--cobalt); box-shadow: 0 0 0 3px rgba(47,140,255,.12); }
.site-guide-form button { align-self: stretch; min-width: 72px; border: 1px solid var(--cobalt); background: var(--cobalt); color: white; cursor: pointer; }
.site-guide-form button:disabled, .site-guide-form textarea:disabled { opacity: .55; cursor: wait; }
.site-guide-note { margin: 6px 16px 10px; color: #71808c; font-size: .62rem; line-height: 1.3; }
.site-footer { padding: 62px 0 28px; background: #030609; }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 50px; }
.footer-grid p, .footer-grid a { color: var(--muted); }
.footer-links { display: grid; gap: 8px; align-content: start; }
.footer-bottom { display: flex; justify-content: space-between; gap: 30px; margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--line); color: #72818e; font-size: .78rem; }
.reveal { opacity: 1; transform: none; }
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s ease, transform .65s ease; }
.js .reveal.visible { opacity: 1; transform: none; }
@media (max-width: 1040px) {
  .nav-links { position: static; display: flex; padding: 14px 0; flex-wrap: wrap; }
  .js .nav-links { position: fixed; inset: 76px 0 auto; display: none; padding: 24px; background: var(--ink-2); border-bottom: 1px solid var(--line); }
  .js .nav-links.open { display: flex; }
  .nav-links a { padding: 10px 6px; }
  .menu-toggle { display: none; }
  .js .menu-toggle { display: block; }
  .hero-grid, .split, .section-head { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .hero-art { order: -1; }
  .stakes, .lane-grid { grid-template-columns: 1fr; }
  .system-grid, .evidence-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  .shell { width: min(100% - 28px, var(--max)); }
  .nav { min-height: 66px; }
  .js .nav-links { top: 66px; }
  h1 { font-size: clamp(1.85rem, 7.5vw, 2.4rem); }
  h2 { font-size: clamp(1.4rem, 5.5vw, 1.85rem); }
  .product-hero h1 { font-size: clamp(1.75rem, 7vw, 2.3rem); }
  .hero-grid { padding: 42px 0 60px; gap: 26px; }
  .band { padding: 76px 0; }
  .system-grid, .evidence-grid, .receipt { grid-template-columns: 1fr; }
  .receipt-step::after { display: none; }
  .principle { grid-template-columns: 52px 1fr; }
  .principle p { grid-column: 2; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
  .site-guide { right: 14px; bottom: 14px; }
  .site-guide.open { inset: 0; }
  .site-guide.open .site-guide-panel { position: fixed; inset: 0; width: 100%; height: 100%; border: 0; }
  .site-guide-log { height: calc(100% - 272px); }
}

/* Product expert paths */
.product-hero { min-height: 520px; display: grid; align-items: center; border-bottom: 1px solid var(--line); overflow: hidden; }
.product-hero-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 42px; align-items: center; padding: 56px 0; }
.product-owner { margin: 0 0 19px; color: var(--cobalt-soft); font-family: var(--mono); font-size: .76rem; letter-spacing: .11em; text-transform: uppercase; }
.product-hero h1 { max-width: 16ch; font-size: clamp(2rem, 4vw, 3rem); }
.product-visual { margin: 0; overflow: hidden; border: 1px solid var(--line-strong); background: var(--surface); box-shadow: var(--shadow); max-width: 100%; }
.product-visual img {
  display: block;
  width: 100%;
  height: clamp(200px, 30vw, 360px);
  aspect-ratio: 3 / 2;
  object-fit: cover;
  object-position: center;
}
.product-status-band { border-bottom: 1px solid var(--line); background: #06111c; }
.product-status-band.caution { background: #151008; }
.product-status-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.product-status-grid > div { min-height: 128px; display: flex; flex-direction: column; justify-content: center; gap: 9px; padding: 24px 28px; }
.product-status-grid > div + div { border-left: 1px solid var(--line); }
.product-status-grid span { color: var(--muted); font-family: var(--mono); font-size: .67rem; letter-spacing: .08em; text-transform: uppercase; }
.product-status-grid strong { color: var(--sea); font-size: 1.04rem; font-weight: 620; }
.product-status-band.caution .product-status-grid strong { color: var(--amber); }
.product-story { display: grid; grid-template-columns: 1.12fr .88fr; gap: 70px; align-items: start; }
.product-story > div > p { max-width: 690px; color: #c0cbd3; font-size: 1.06rem; }
.expert-note { padding: 28px; border: 1px solid var(--cobalt); background: #06111c; }
.expert-note > span { color: var(--cobalt-soft); font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; }
.expert-note p { margin: 15px 0; color: #d1dae1; font-size: 1rem; }
.expert-note small { display: block; padding-top: 14px; border-top: 1px solid var(--line); color: var(--amber); font-family: var(--mono); font-size: .67rem; line-height: 1.55; }
.product-hear { width: 100%; margin: 20px 0 0; min-height: 42px; }
.product-boundaries { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; border: 1px solid var(--line); background: var(--line); }
.product-boundaries article { min-height: 220px; padding: 30px; background: var(--ink); }
.product-boundaries p { color: var(--muted); }
.product-next { display: flex; justify-content: space-between; align-items: center; gap: 38px; }
.product-next p { max-width: 680px; margin-bottom: 0; color: var(--muted); }
.product-next .button { flex: 0 0 auto; }
.product-expert-link { display: inline-flex; margin-top: 18px; color: var(--cobalt-soft); font-family: var(--mono); font-size: .72rem; }
.product-expert-link:hover { color: var(--text); }
.guide-product-card { margin: 10px 12px 0; padding: 12px; border: 1px solid var(--sea); background: #06111c; box-shadow: inset 0 0 0 1px rgba(94,214,179,.12); }
.guide-product-card span, .guide-product-card strong { display: block; }
.guide-product-card span { color: var(--cobalt-soft); font-family: var(--mono); font-size: .6rem; text-transform: uppercase; letter-spacing: .07em; }
.guide-product-card strong { margin: 4px 0 6px; font-size: .82rem; }
.guide-product-blurb { margin: 0 0 10px; color: var(--muted); font-size: .7rem; line-height: 1.4; }
.guide-product-card a, .guide-product-cta { display: inline-flex; align-items: center; min-height: 34px; padding: 0 10px; border: 1px solid var(--sea); color: var(--sea); font-size: .72rem; }
.guide-product-card a:hover, .guide-product-cta:hover { background: rgba(94,214,179,.1); color: var(--text); }
.lane-intro-card { display: grid; gap: 8px; }
.lane-intro-card.compact { gap: 8px; }
.lane-intro-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; }
.lane-intro-block, .lane-intro-product, .lane-intro-collaborators { padding: 10px 12px; border: 1px solid var(--line); background: #09131e; }
.lane-intro-limits { border-color: rgba(212,168,67,.45); background: #121008; }
.lane-intro-block span, .lane-intro-product span, .lane-intro-collaborators span { display: block; margin-bottom: 5px; color: var(--cobalt-soft); font-family: var(--mono); font-size: .58rem; letter-spacing: .07em; text-transform: uppercase; }
.lane-intro-block p, .lane-intro-product p { margin: 0; color: #c5d0d8; font-size: .86rem; line-height: 1.4; }
.lane-intro-product strong { display: block; margin: 0 0 6px; font-size: .95rem; }
.lane-product-cta { width: fit-content; text-decoration: none; }
.lane-product-cta.compact { display: inline-flex; align-items: center; min-height: 28px; padding: 0 10px; border: 1px solid var(--sea); color: var(--sea); font-family: var(--mono); font-size: .68rem; margin: 0 !important; }
.lane-product-cta.compact:hover { background: rgba(94,214,179,.1); color: var(--text); }
.lane-collab-list { display: grid; gap: 6px; margin-top: 2px; }
.lane-collab-list.pills { display: flex; flex-wrap: wrap; gap: 6px; }
.lane-collab-chip { width: 100%; display: grid; gap: 4px; padding: 10px 11px; border: 1px solid var(--line-strong); background: #06111c; color: var(--text); text-align: left; cursor: pointer; }
.lane-collab-chip.pill { width: auto; display: inline-flex; align-items: center; min-height: 28px; padding: 0 10px; font-size: .72rem; font-weight: 600; }
.lane-collab-chip:hover, .lane-collab-chip:focus-visible { border-color: var(--cobalt); background: rgba(47,140,255,.08); }
.lane-collab-chip strong { font-size: .88rem; }
.lane-collab-chip em { color: #c5d0d8; font-size: .78rem; font-style: normal; line-height: 1.4; }
.lane-collab-chip small { color: var(--sea); font-family: var(--mono); font-size: .62rem; }
.lane-intro-collaborators.compact { padding: 8px 10px; }

/* Method page */
.method-tiers { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; border: 1px solid var(--line); background: var(--line); }
.method-tiers article { min-height: 180px; padding: 22px; background: var(--ink); }
.method-tiers .tier { display: block; margin-bottom: 12px; color: var(--cobalt-soft); font-family: var(--mono); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; }
.method-tiers h3 { margin: 0 0 10px; font-size: 1.05rem; }
.method-tiers p { margin: 0; color: var(--muted); font-size: .9rem; }
.method-claim { padding: 20px 22px; border: 1px solid var(--line); background: #09131e; }
.method-claim + .method-claim { margin-top: 10px; }
.method-claim strong { display: block; margin-bottom: 8px; color: var(--sea); font-family: var(--mono); font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; }
.method-claim p { margin: 0; color: #c5d0d8; }
.method-claim.caution { border-color: rgba(212,168,67,.5); background: #121008; }
.method-claim.caution strong { color: var(--amber); }

@media (max-width: 880px) {
  .method-tiers { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .method-tiers { grid-template-columns: 1fr; }
  .guide-mode-switch { grid-template-columns: 1fr; }
}

@media (max-width: 880px) {
  .product-hero-grid, .product-story { grid-template-columns: 1fr; }
  .product-hero-grid { padding: 56px 0; }
  .product-story { gap: 36px; }
}

@media (max-width: 680px) {
  .product-hero { min-height: 0; }
  .product-status-grid { grid-template-columns: 1fr; }
  .product-status-grid > div { min-height: 96px; padding: 19px 20px; }
  .product-status-grid > div + div { border-left: 0; border-top: 1px solid var(--line); }
  .product-boundaries { grid-template-columns: 1fr; }
  .product-next { align-items: flex-start; flex-direction: column; }
  .product-next .button { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* Meet the Constellation: homepage entry and governed conversation surface */
.constellation-home { background: #060b12; }
.constellation-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; border: 1px solid var(--line); background: var(--line); }
.constellation-lane { min-height: 118px; display: grid; grid-template-columns: 44px 1fr; grid-template-rows: 1fr auto; gap: 6px 14px; align-items: center; padding: 22px; border: 0; background: var(--ink); color: var(--text); text-align: left; cursor: pointer; transition: background .2s, box-shadow .2s; }
.constellation-lane:hover, .constellation-lane:focus-visible { position: relative; z-index: 1; outline: 1px solid var(--cobalt); background: #081321; box-shadow: inset 0 0 34px rgba(47,140,255,.08); }
.lane-monogram { width: 44px; height: 44px; display: grid; place-items: center; grid-row: 1 / 3; border: 1px solid var(--cobalt); color: var(--cobalt-soft); font-family: var(--mono); font-size: .82rem; }
.constellation-lane strong, .constellation-lane small { display: block; }
.constellation-lane strong { font-size: 1.08rem; }
.constellation-lane small { margin-top: 3px; color: var(--muted); font-size: .78rem; }
.constellation-lane em { display: block; margin-top: 5px; color: var(--cobalt-soft); font-family: var(--mono); font-size: .64rem; font-style: normal; }
.lane-route { color: var(--sea); font-family: var(--mono); font-size: .66rem; line-height: 1.35; }
.horn-invitation { display: flex; justify-content: space-between; align-items: center; gap: 30px; padding: 30px 0; border-bottom: 1px solid var(--line); }
.horn-invitation h3 { margin-bottom: 8px; }
.horn-invitation p, .constellation-disclosure { margin: 0; color: var(--muted); }
/* ONE-OFF 2026-08-05 (GC): ATH suppressed on public surface — re-enable by removing body.ath-suppressed / ATH_ENABLED */
body.ath-suppressed .horn-invitation,
body.ath-suppressed [data-open-around-horn],
body.ath-suppressed [data-open-recorded-ath] { display: none !important; }
body.ath-suppressed .guide-mode-switch { display: none !important; }
/* ONE-OFF 2026-08-06 (CPN/GC): passing surface — no floating chat widget */
body.public-guide-quiet .site-guide { display: none !important; }
body.public-guide-quiet .lane-hear,
body.public-guide-quiet .product-hear,
body.public-guide-quiet [data-hear-image-story] { display: none !important; }
a.constellation-lane { text-decoration: none; color: inherit; cursor: pointer; display: flex; }
.constellation-disclosure { padding-top: 18px; font-family: var(--mono); font-size: .72rem; line-height: 1.55; max-width: 78ch; }
.constellation-disclosure.substrate-disclaimer {
  margin-top: 18px;
  padding: 16px 18px;
  border: 1px solid var(--line-strong);
  background: #0a121c;
  color: #c5d0d8;
  font-family: var(--sans);
  font-size: .86rem;
  line-height: 1.5;
}
.constellation-disclosure.substrate-disclaimer strong { color: var(--sea); font-family: var(--mono); font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; display: block; margin-bottom: 8px; }
.constellation-disclosure.substrate-disclaimer em { color: var(--cobalt-soft); font-style: normal; }

.site-guide { font-family: var(--sans); }
.site-guide-panel { width: min(640px, calc(100vw - 24px)); height: min(86vh, calc(100vh - 20px)); display: grid; grid-template-rows: auto auto auto auto minmax(0, 1fr) auto auto; }
.site-guide.horn-mode .site-guide-panel { width: min(1180px, calc(100vw - 24px)); height: min(90vh, calc(100vh - 20px)); }
.site-guide-header { grid-row: 1; }
.guide-mode-switch { grid-row: 2; display: grid; grid-template-columns: 1fr 1fr 1fr; padding: 8px 14px; gap: 6px; border-bottom: 1px solid var(--line); background: #07101a; }
.guide-mode-switch button { min-height: 34px; border: 1px solid var(--line-strong); background: transparent; color: var(--muted); cursor: pointer; font-size: .7rem; }
.guide-mode-switch button[aria-selected="true"] { border-color: var(--cobalt); background: rgba(47,140,255,.12); color: var(--text); }
.soft-lock-banner { grid-row: 3; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; padding: 7px 14px; border-bottom: 1px solid var(--sea); background: linear-gradient(180deg, rgba(94,214,179,.1), rgba(6,17,28,.96)); }
.soft-lock-banner[hidden] { display: none !important; }
.soft-lock-lead { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 10px; flex: 1 1 auto; }
.soft-lock-lead strong { color: var(--sea); font-family: var(--mono); font-size: .6rem; letter-spacing: .08em; text-transform: uppercase; }
.soft-lock-lead span { color: #d4dee5; font-size: .8rem; }
.soft-lock-actions { display: flex; flex-wrap: wrap; gap: 6px; }
.soft-lock-return, .soft-lock-clear { min-height: 26px; padding: 0 8px; border: 1px solid var(--line-strong); background: transparent; color: var(--muted); font-family: var(--mono); font-size: .6rem; cursor: pointer; }
.soft-lock-return { border-color: var(--sea); color: var(--sea); }
.soft-lock-return:hover, .soft-lock-clear:hover { color: var(--text); border-color: var(--cobalt-soft); }
.soft-lock-note { display: none; }
.site-guide.soft-locked .guide-lane-rail button.soft-lock-expert { border-color: var(--sea); box-shadow: inset 0 0 0 1px rgba(94,214,179,.25); }
.site-guide-disclosure { grid-row: 4; }
.constellation-workspace { grid-row: 5; min-height: 0; display: grid; grid-template-columns: 118px 1fr; }
.guide-lane-rail { min-height: 0; overflow-y: auto; padding: 8px; border-right: 1px solid var(--line); background: #060c13; }
.guide-lane-rail button { width: 100%; display: grid; grid-template-columns: 26px 1fr auto; gap: 6px; align-items: center; padding: 8px 6px; border: 1px solid transparent; background: transparent; color: var(--muted); text-align: left; cursor: pointer; }
.guide-lane-rail button + button { margin-top: 4px; }
.guide-lane-rail button:hover, .guide-lane-rail button:focus-visible, .guide-lane-rail button.selected { border-color: var(--cobalt); color: var(--text); background: rgba(47,140,255,.08); }
.guide-lane-rail button:not(.horn-active) { opacity: .48; }
.guide-lane-mark { width: 26px; height: 26px; display: grid; place-items: center; border: 1px solid currentColor; color: var(--cobalt-soft); font-family: var(--mono); font-size: .62rem; }
.guide-lane-rail strong, .guide-lane-rail small { display: block; }
.guide-lane-rail strong { font-size: .74rem; }
.guide-lane-rail small { margin-top: 1px; font-size: .55rem; line-height: 1.15; display: none; }
.guide-lane-check { color: var(--sea); font-size: .62rem; }
.guide-conversation { min-width: 0; min-height: 0; display: flex; flex-direction: column; }
.guide-single-pane, .guide-horn-pane { height: 100%; min-height: 0; }
.guide-single-pane { display: grid; grid-template-rows: auto minmax(0, 1fr) auto; min-height: 0; }
.guide-single-pane[hidden], .guide-horn-pane[hidden] { display: none; }
.guide-horn-pane { display: grid; grid-template-rows: auto auto minmax(0, 1fr); }
.chat-substrate-disclaimer {
  margin: 0;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(94,214,179,.35);
  background: #0c1612;
  color: #c5d0d8;
  font-size: .78rem;
  line-height: 1.45;
}
.chat-substrate-disclaimer strong {
  display: block;
  margin-bottom: 6px;
  color: var(--sea);
  font-family: var(--mono);
  font-size: .62rem;
  letter-spacing: .07em;
  text-transform: uppercase;
}
.chat-substrate-disclaimer p { margin: 0 0 6px; }
.chat-substrate-disclaimer p:last-child { margin-bottom: 0; }
.chat-substrate-disclaimer em { color: var(--cobalt-soft); font-style: normal; }
.chat-disclaimer-entry { margin-bottom: 4px; }
.chat-disclaimer-label {
  margin-bottom: 6px;
  color: var(--sea);
  font-family: var(--mono);
  font-size: .62rem;
  letter-spacing: .07em;
  text-transform: uppercase;
}
.chat-disclaimer-body {
  max-width: 100% !important;
  border-color: rgba(94,214,179,.4) !important;
  background: #0c1612 !important;
  font-size: .84rem !important;
}
.chat-disclaimer-body p { margin: 0 0 8px; }
.chat-disclaimer-body p:last-child { margin-bottom: 0; }
.site-guide-log { height: auto; min-height: 220px; flex: 1; }
.site-guide-form { grid-row: 6; padding: 10px 16px 0; border-top: 1px solid var(--line); }
.site-guide-form button { min-width: 72px; padding: 0 12px; font-size: .78rem; }
.site-guide-note { grid-row: 7; }
.lane-provenance { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin-top: 6px; color: var(--cobalt-soft); font-family: var(--mono); font-size: .58rem; }
.lane-provenance.compact { margin-top: 0; }
.lane-provenance span + span { padding-left: 6px; border-left: 1px solid var(--line-strong); }
.lane-hear { margin-left: auto; min-height: 26px; padding: 0 8px; border: 1px solid var(--cobalt); background: transparent; color: var(--cobalt-soft); cursor: pointer; font-family: var(--mono); font-size: .6rem; }
.lane-hear:hover, .lane-hear:focus-visible { background: rgba(47,140,255,.12); color: var(--text); }
.lane-hear:disabled { opacity: .55; cursor: wait; }

.guide-horn-pane { overflow-y: auto; overscroll-behavior: contain; }
.horn-intro { display: flex; justify-content: space-between; gap: 20px; padding: 13px 18px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: .72rem; }
.horn-intro strong { color: var(--text); }
.horn-results { padding: 16px; }
.horn-working { min-height: 180px; display: grid; place-items: center; padding: 30px; color: var(--cobalt-soft); text-align: center; font-family: var(--mono); font-size: .78rem; }
.horn-working.error { color: var(--danger); }
.horn-question { display: grid; gap: 5px; padding: 0 0 16px; border-bottom: 1px solid var(--line); }
.horn-question span { color: var(--cobalt-soft); font-family: var(--mono); font-size: .65rem; text-transform: uppercase; letter-spacing: .08em; }
.horn-question strong { font-size: clamp(1.25rem, 2.4vw, 2rem); line-height: 1.2; }
.horn-perspectives { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 14px; }
.horn-card { min-width: 0; display: flex; flex-direction: column; padding: 14px; border: 1px solid var(--line-strong); background: #07101a; }
.horn-card header { display: grid; grid-template-columns: 28px 1fr auto; gap: 9px; align-items: center; padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.horn-card header h3 { font-size: 1rem; }
.horn-card header span { display: block; margin-top: 2px; color: var(--muted); font-size: .63rem; }
.horn-card header b { color: var(--sea); font-family: var(--mono); font-size: .62rem; font-weight: 500; }
.horn-card.unavailable header b { color: var(--amber); }
.horn-number { width: 28px; height: 28px; display: grid !important; place-items: center; border: 1px solid var(--cobalt); color: var(--cobalt-soft) !important; font-family: var(--mono); }
.horn-card > p { flex: 1; margin: 12px 0; color: #c9d4dc; font-size: .78rem; line-height: 1.5; }
.horn-card.unavailable > p { color: var(--muted); }
.horn-synthesis { margin-top: 12px; padding: 16px; border: 1px solid var(--cobalt); background: #06111c; }
.horn-synthesis > header { display: flex; justify-content: space-between; gap: 20px; align-items: center; }
.horn-synthesis h3 { color: var(--cobalt-soft); font-size: 1rem; text-transform: uppercase; letter-spacing: .05em; }
.horn-synthesis header span { color: var(--muted); font-size: .68rem; }
.synthesis-summary { color: #d4dee5; font-size: .82rem; }
.synthesis-groups { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.synthesis-groups article { padding: 13px; }
.synthesis-groups article + article { border-left: 1px solid var(--line); }
.synthesis-groups h4 { margin: 0 0 7px; color: var(--sea); font-family: var(--mono); font-size: .7rem; text-transform: uppercase; letter-spacing: .06em; }
.synthesis-groups article:nth-child(2) h4 { color: var(--amber); }
.synthesis-groups article:nth-child(3) h4 { color: var(--cobalt-soft); }
.synthesis-groups p { margin: 0; color: var(--muted); font-size: .72rem; line-height: 1.45; }
.horn-rule { margin: 13px 0 0; color: var(--amber); font-family: var(--mono); font-size: .64rem; }

@media (max-width: 1040px) {
  .constellation-list { grid-template-columns: repeat(2, 1fr); }
  .site-guide.horn-mode .site-guide-panel { width: calc(100vw - 28px); }
  .horn-perspectives { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
  .constellation-list { grid-template-columns: 1fr; }
  .horn-invitation { align-items: flex-start; flex-direction: column; }
  .site-guide.open .site-guide-panel { display: grid; grid-template-rows: auto auto auto auto minmax(0, 1fr) auto auto; width: 100%; height: 100%; }
  .constellation-workspace { grid-template-columns: 1fr; grid-template-rows: auto 1fr; }
  .guide-lane-rail { display: flex; gap: 5px; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .guide-lane-rail button { flex: 0 0 auto; width: auto; grid-template-columns: 28px 1fr auto; }
  .guide-lane-rail button + button { margin-top: 0; }
  .guide-lane-rail small { display: none; }
  .guide-conversation { min-height: 0; }
  .horn-intro { flex-direction: column; gap: 4px; }
  .horn-perspectives, .synthesis-groups { grid-template-columns: 1fr; }
  .synthesis-groups article + article { border-left: 0; border-top: 1px solid var(--line); }
  .site-guide-form { grid-template-columns: 1fr; }
  .site-guide-form button { min-height: 44px; }
  .site-guide-note { margin-bottom: 8px; }
}

/* Recorded ATH player */
.guide-recorded-pane { min-height: 0; overflow: auto; padding: 12px 0 0; }
.ath-recorded-player { display: grid; gap: 14px; color: var(--text); }
.ath-disclosure { margin: 0; padding: 10px 12px; border: 1px solid var(--sea); color: var(--sea); font-family: var(--mono); font-size: .72rem; letter-spacing: .04em; text-transform: uppercase; }
.ath-status-panel { padding: 14px 16px; border: 1px solid var(--line); background: #07101a; }
.ath-status-panel h3 { margin: 0 0 8px; font-size: 1.1rem; }
.ath-status-panel p { margin: 0; color: var(--muted); }
.ath-seat-rail { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 6px; }
.ath-seat-rail li { display: grid; gap: 4px; padding: 8px; border: 1px solid var(--line); background: var(--ink); font-size: .72rem; }
.ath-seat-rail li[data-status="COMPLETE"] { border-color: var(--sea); }
.ath-seat-rail li[data-status="READY"] { border-color: var(--cobalt); }
.ath-seat-rail li[data-status="INSPECTING"] { border-color: var(--amber); }
.ath-seat-rail li[data-status="FAILED"] { border-color: #f87171; }
.ath-controls { display: flex; flex-wrap: wrap; gap: 8px; }
.ath-stage { display: grid; gap: 12px; }
.ath-turn-card, .ath-narration, .ath-cpn-return, .ath-drawer { padding: 14px 16px; border: 1px solid var(--line); background: #09131e; }
.ath-response { display: grid; gap: 8px; margin: 10px 0; }
.ath-cpn-choices { display: flex; gap: 8px; margin: 10px 0; }
@media (max-width: 900px) {
  .ath-seat-rail { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}