/* Bureau. Colour comes only from tokens.css variables. */
:root {
  --sans: ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --mono: ui-monospace, 'SF Mono', 'Cascadia Mono', Menlo, Consolas, 'Liberation Mono', monospace;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-io: cubic-bezier(0.65, 0, 0.35, 1);
  --t: 0.15s;
  --topbar-h: 76px;
  --gutter: 16px;
  --rail-w: clamp(320px, 26vw, 360px);
}

/* semantic themes */
.panel-dark {
  --bg: var(--k2);
  --bg2: var(--k3);
  --bg3: var(--k4);
  --ink: var(--k12);
  --soft: var(--k10);
  --mute: var(--k8);
  --line: color-mix(in oklch, var(--k6) 62%, transparent);
  --hi: var(--k13);
  --glow: color-mix(in oklch, var(--k13) 38%, transparent);
  background-color: var(--bg);
  color: var(--ink);
}
.panel-light {
  --bg: var(--k12);
  --bg2: var(--k11);
  --bg3: var(--k10);
  --ink: var(--k2);
  --soft: var(--k5);
  --mute: var(--k6);
  --line: color-mix(in oklch, var(--k7) 45%, transparent);
  --hi: var(--k0);
  --glow: color-mix(in oklch, var(--k0) 22%, transparent);
  background-color: var(--bg);
  color: var(--ink);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--topbar-h) + 12px);
  -webkit-text-size-adjust: 100%;
  background: var(--k1);
}
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  background: var(--k1);
  color: var(--k12);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, p, dl, dd, dt, ul, ol, figure { margin: 0; padding: 0; }
ul, ol { list-style: none; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; }
a { color: inherit; text-decoration: none; }
svg { display: block; }
.mono { font-family: var(--mono); font-feature-settings: 'tnum' 1; letter-spacing: -0.01em; }
:focus-visible { outline: 2px solid var(--hi, var(--k13)); outline-offset: 2px; }
.num { font-variant-numeric: tabular-nums; font-feature-settings: 'tnum' 1; }
.wrap { width: 100%; max-width: 1180px; margin-inline: auto; padding-inline: var(--gutter); }

/* progress bar */
.progress { position: fixed; inset: 0 0 auto 0; height: 3px; z-index: 60; pointer-events: none; }
.progress i { display: block; height: 100%; background: var(--k13); transform-origin: 0 50%; transform: scaleX(0); box-shadow: 0 0 12px color-mix(in oklch, var(--k13) 60%, transparent); }

/* topbar */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: grid; align-items: center; column-gap: 16px; row-gap: 8px;
  grid-template-columns: auto minmax(0, 1fr) auto;
  padding: 10px var(--gutter);
  background: color-mix(in oklch, var(--k1) 94%, transparent);
  border-bottom: 1px solid color-mix(in oklch, var(--k6) 62%, transparent);
  color: var(--k12);
}
.brand { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; font-weight: 900; font-size: 1.375rem; letter-spacing: -0.04em; transition: letter-spacing 0.3s var(--ease-out), opacity var(--t); }
.brand:hover { letter-spacing: 0.02em; }
.social { display: flex; gap: 4px; justify-self: end; }
.icon-btn { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid transparent; color: var(--k10); transition: color var(--t), border-color var(--t), background-color var(--t), transform 0.3s var(--ease-out); }
a.icon-btn:hover { color: var(--k13); border-color: color-mix(in oklch, var(--k13) 70%, transparent); background: color-mix(in oklch, var(--k13) 8%, transparent); transform: translateY(-2px); }
.icon-btn.is-inert { opacity: 0.45; cursor: default; }

/* contract slot */
.ca { display: grid; gap: 2px; min-width: 0; justify-items: center; text-align: center; }
.ca-label { font-size: 0.625rem; text-transform: uppercase; letter-spacing: 0.2em; color: var(--k8); }
.ca-btn {
  position: relative; display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap;
  width: 100%; min-height: 44px; padding: 6px 14px; text-align: center;
  border: 1px solid color-mix(in oklch, var(--k6) 80%, transparent); background: color-mix(in oklch, var(--k3) 70%, transparent);
  color: var(--k13); transition: border-color var(--t), background-color var(--t), box-shadow 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}
button.ca-btn:hover { border-color: var(--k13); background: color-mix(in oklch, var(--k13) 9%, transparent); box-shadow: 0 0 24px color-mix(in oklch, var(--k13) 24%, transparent); }
button.ca-btn:active { transform: scale(0.99); }
.ca-addr { font-size: clamp(1.0625rem, 1.6vw, 1.25rem); font-weight: 700; letter-spacing: 0; line-height: 1.25; overflow-wrap: anywhere; word-break: break-all; }
.ca-fb { font-size: 0.6875rem; text-transform: uppercase; letter-spacing: 0.16em; color: var(--k9); border: 1px solid color-mix(in oklch, var(--k7) 70%, transparent); padding: 2px 8px; transition: color var(--t), border-color var(--t); }
.ca-btn.is-copied .ca-fb { color: var(--k0); background: var(--k13); border-color: var(--k13); }
.ca-btn.is-inert { border-style: dashed; color: var(--k9); cursor: default; }
.ca-btn.is-inert .ca-addr { font-weight: 500; letter-spacing: 0.02em; }
.ca-btn.is-inert .ca-fb { opacity: 0.6; }

/* pills / dots */
.pill { display: inline-flex; align-items: center; gap: 8px; min-height: 28px; padding: 0 10px; font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; border: 1px solid var(--line, color-mix(in oklch, var(--k6) 62%, transparent)); background: color-mix(in oklch, var(--k0) 40%, transparent); color: var(--k11); }
.dot { position: relative; display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--k8); }
.dot::after { content: ''; position: absolute; inset: -4px; border-radius: 50%; border: 1px solid currentColor; opacity: 0; }
.pill .dot { color: var(--k8); }
.pill[data-health='live'] { color: var(--k13); border-color: color-mix(in oklch, var(--k13) 60%, transparent); }
.pill[data-health='live'] .dot { background: var(--k13); color: var(--k13); animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite; }
.pill[data-health='live'] .dot::after { animation: ping 1.6s cubic-bezier(0, 0, 0.2, 1) infinite; }
.pill[data-health='connecting'] .dot { background: var(--k9); color: var(--k9); animation: pulse 1s cubic-bezier(0.4, 0, 0.6, 1) infinite; }
.pill[data-health='offline'] { color: var(--k8); }
.pill[data-health='offline'] .dot { background: transparent; border: 2px solid var(--k7); }

/* hero */
.hero { position: relative; isolation: isolate; overflow: hidden; min-height: calc(100svh - var(--topbar-h)); display: grid; align-items: center; padding: 56px 0 96px; background: radial-gradient(80% 70% at 78% 40%, var(--k3), transparent 70%), var(--k1); }
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -3; }
.hero-spot { position: absolute; inset: 0; z-index: -2; background: radial-gradient(520px circle at var(--mx, 70%) var(--my, 30%), color-mix(in oklch, var(--k13) 12%, transparent), transparent 70%); }
.hero-grid { position: absolute; inset: -10% 0 -10% 0; z-index: -2; background-image: linear-gradient(color-mix(in oklch, var(--k13) 6%, transparent) 1px, transparent 1px), linear-gradient(90deg, color-mix(in oklch, var(--k13) 6%, transparent) 1px, transparent 1px); background-size: 64px 64px; -webkit-mask-image: radial-gradient(70% 60% at 50% 40%, var(--k13), transparent); mask-image: radial-gradient(70% 60% at 50% 40%, var(--k13), transparent); }
.hero::after { content: ''; position: absolute; inset: auto 0 0 0; height: 160px; z-index: -1; background: linear-gradient(to bottom, transparent, var(--k2)); pointer-events: none; }
.hero-inner { width: 100%; max-width: 1180px; margin-inline: auto; padding-inline: var(--gutter); display: grid; gap: 20px; }
.eyebrow { font-size: 0.6875rem; text-transform: uppercase; letter-spacing: 0.2em; color: var(--mute, var(--k8)); }
.display { position: relative; font-size: clamp(3.5rem, 13vw, 10rem); line-height: 0.88; font-weight: 900; letter-spacing: -0.06em; margin-block: 4px; will-change: transform; }
.display span { display: block; }
.display-back, .display-mid { position: absolute; inset: 0; pointer-events: none; user-select: none; }
.display-back { color: transparent; -webkit-text-stroke: 1px color-mix(in oklch, var(--k13) 16%, transparent); transform: translate(10px, 10px); }
.display-mid { color: transparent; -webkit-text-stroke: 1px color-mix(in oklch, var(--k13) 34%, transparent); transform: translate(5px, 5px); }
.display-front { position: relative; background: linear-gradient(90deg, var(--k12) 0%, var(--k9) 25%, var(--k13) 50%, var(--k9) 75%, var(--k12) 100%) 0 0 / 200% 100%; -webkit-background-clip: text; background-clip: text; color: transparent; animation: shimmer 6s linear infinite; }
.lede { max-width: 38rem; font-size: clamp(1rem, 1.6vw, 1.25rem); line-height: 1.55; color: var(--k10); text-wrap: pretty; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 4px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; min-width: 44px; padding: 0 22px; font-weight: 700; letter-spacing: 0.02em; border: 1px solid var(--k13); transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), background-color var(--t), color var(--t); }
.btn-solid { background: var(--k13); color: var(--k0); }
.btn-solid:hover { transform: translateY(-3px); box-shadow: 0 10px 34px color-mix(in oklch, var(--k13) 38%, transparent); }
.btn-ghost { color: var(--k13); background: transparent; border-color: color-mix(in oklch, var(--k13) 55%, transparent); }
.btn-ghost:hover { background: color-mix(in oklch, var(--k13) 10%, transparent); border-color: var(--k13); transform: translateY(-3px); }
.btn:active { transform: translateY(0) scale(0.98); }
.hero-strip { display: flex; flex-wrap: wrap; gap: 28px; padding-top: 20px; margin-top: 12px; border-top: 1px solid color-mix(in oklch, var(--k13) 16%, transparent); }
.hero-strip dt { font-size: 0.625rem; text-transform: uppercase; letter-spacing: 0.2em; color: var(--k8); margin-bottom: 4px; }
.hero-strip dd { font-size: clamp(1.25rem, 3vw, 1.75rem); font-weight: 700; min-height: 28px; display: flex; align-items: center; }
.scroll-cue { position: absolute; left: 50%; bottom: 20px; translate: -50% 0; display: grid; justify-items: center; gap: 8px; font-size: 0.625rem; letter-spacing: 0.3em; text-transform: uppercase; color: var(--k8); }
.scroll-cue i { width: 1px; height: 36px; background: linear-gradient(var(--k13), transparent); animation: cue 2s var(--ease-io) infinite; transform-origin: top; }

/* desk */
.desk { position: relative; background:
  radial-gradient(50% 40% at 10% 0, color-mix(in oklch, var(--k13) 6%, transparent), transparent 70%),
  radial-gradient(40% 35% at 95% 10%, color-mix(in oklch, var(--k13) 4%, transparent), transparent 70%),
  radial-gradient(color-mix(in oklch, var(--k13) 4%, transparent) 1px, transparent 1px);
  background-size: auto, auto, 22px 22px; background-color: var(--k2); }
.desk, .rail, .atlas { overflow-x: clip; }
.desk-grid { display: grid; grid-template-columns: minmax(0, 1fr); }
.rail { display: flex; flex-direction: column; gap: 12px; padding: 24px var(--gutter); min-width: 0; }
.rail-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.rail-head h2 { line-height: 1; }
.t-big { display: block; font-size: 3rem; font-weight: 900; letter-spacing: -0.06em; }
.t-sub { display: block; margin-top: 4px; white-space: nowrap; font-size: 1.3rem; font-weight: 800; letter-spacing: -0.03em; }
.w1 { color: var(--k13); } .w2 { color: var(--k9); } .w3 { color: var(--k7); }
.brief-btn { position: relative; display: inline-flex; align-items: center; gap: 6px; min-height: 44px; padding: 0 14px; font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.18em; background: var(--k13); color: var(--k2); box-shadow: 0 0 14px color-mix(in oklch, var(--k13) 45%, transparent); transition: box-shadow 0.15s; }
.brief-btn:hover { box-shadow: 0 0 24px color-mix(in oklch, var(--k13) 80%, transparent); }
.brief-btn .ping { position: absolute; inset: 0; background: color-mix(in oklch, var(--k9) 40%, transparent); animation: ping 2.4s cubic-bezier(0, 0, 0.2, 1) infinite; }
.brief-btn .rel, .brief-btn svg { position: relative; }

.readouts { display: grid; gap: 12px; }
.readout { display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; flex-wrap: wrap; border: 1px solid var(--line); background: color-mix(in oklch, var(--k0) 36%, transparent); padding: 12px 14px; }
.readout:first-child { display: block; }
.lab { font-size: 0.625rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--mute); }
.big { margin-top: 6px; font-size: clamp(1.75rem, 8vw, 2.25rem); font-weight: 700; letter-spacing: -0.02em; line-height: 1.1; }
.mid { margin-top: 2px; font-size: 1.5rem; font-weight: 800; letter-spacing: -0.02em; line-height: 1.1; }
.sub { margin-top: 4px; font-size: 0.6875rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--mute); }
.sub.r { text-align: right; line-height: 1.5; }

.tiles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.tile { border: 1px solid var(--line); background: color-mix(in oklch, var(--k0) 28%, transparent); padding: 8px 10px; min-width: 0; transition: border-color var(--t), background-color var(--t), transform 0.3s var(--ease-out); }
.tile:hover { border-color: var(--k9); background: color-mix(in oklch, var(--k13) 6%, transparent); transform: translateY(-2px); }
.tile dt { font-size: 0.5625rem; text-transform: uppercase; letter-spacing: 0.18em; color: var(--mute); }
.tile dd { margin-top: 4px; font-size: 0.75rem; font-weight: 700; color: var(--ink); overflow-wrap: anywhere; line-height: 1.3; }
.tile dd.is-dim { color: var(--mute); }

.statusbar { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: 40px; padding: 0 10px; font-size: 0.6rem; text-transform: uppercase; letter-spacing: 0.14em; border-block: 1px solid var(--line); color: var(--soft); flex-wrap: wrap; }
.sb-l { display: inline-flex; align-items: center; gap: 10px; min-width: 0; }
.sb-t { white-space: nowrap; }
.sb-r { color: var(--mute); }

.ledger { border: 1px solid var(--line); background: color-mix(in oklch, var(--k0) 46%, transparent); overflow: hidden; }
.ledger-head, .ledger-foot { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 6px 10px; font-size: 0.56rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--mute); }
.ledger-head b { color: var(--k13); font-weight: 700; }
.ledger-head { border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.ledger-foot { justify-content: flex-start; gap: 6px; border-top: 1px solid var(--line); color: var(--soft); text-transform: none; letter-spacing: 0; font-size: 0.68rem; }
.caret { width: 7px; height: 12px; background: var(--k13); animation: caret 1s step-end infinite; }
.ledger-view { height: 172px; overflow: hidden; -webkit-mask-image: linear-gradient(transparent, var(--k13) 8%, var(--k13) 88%, transparent); mask-image: linear-gradient(transparent, var(--k13) 8%, var(--k13) 88%, transparent); }
.ledger-scroll { animation: desk-scroll 70s linear infinite; }
.ledger-view:hover .ledger-scroll { animation-play-state: paused; }
.ledger-track { font-family: var(--mono); font-size: 0.62rem; line-height: 1.6; color: var(--ink); padding: 6px 10px; }
.ln { display: flex; gap: 12px; white-space: pre; }
.ledger-track { counter-reset: ln; }
.ln { counter-increment: ln; }
.ln .n { width: 16px; text-align: right; color: var(--mute); opacity: 0.6; flex: none; }
.ln .n::before { content: counter(ln); }
.ln .cm { color: var(--mute); }

.outcomes { display: grid; gap: 8px; }
.seg { display: flex; height: 6px; background: color-mix(in oklch, var(--k13) 8%, transparent); overflow: hidden; }
.seg i { display: block; height: 100%; width: 0; transition: width 0.5s var(--ease-out); }
.seg i[data-seg='ok'] { background: var(--k13); } .seg i[data-seg='retry'] { background: var(--k9); } .seg i[data-seg='fail'] { background: var(--k6); } .seg i[data-seg='pause'] { background: var(--k4); }
.seg-legend { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 4px; font-size: 0.55rem; text-transform: uppercase; }
.seg-legend dt { color: var(--mute); letter-spacing: 0.14em; }
.seg-legend dd { margin-top: 2px; font-size: 0.8125rem; font-weight: 700; color: var(--ink); font-variant-numeric: tabular-nums; }

.mat-head, .board-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 8px; font-size: 0.56rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.14em; color: var(--mute); flex-wrap: wrap; }
.mat-cells { display: grid; grid-template-columns: repeat(16, minmax(0, 1fr)); gap: 3px; }
.cell { aspect-ratio: 1; background: color-mix(in oklch, var(--k13) 7%, transparent); border: 1px solid color-mix(in oklch, var(--k13) 8%, transparent); }
.cell[data-l='1'] { background: color-mix(in oklch, var(--k13) 24%, transparent); }
.cell[data-l='2'] { background: color-mix(in oklch, var(--k13) 46%, transparent); }
.cell[data-l='3'] { background: color-mix(in oklch, var(--k13) 72%, transparent); }
.cell[data-l='4'] { background: var(--k13); }
.cell.ping { animation: cell-ping 0.9s var(--ease-out) both; }

.pairs { display: grid; gap: 0; border: 1px solid var(--line); background: color-mix(in oklch, var(--k0) 28%, transparent); }
.pair { display: grid; grid-template-columns: 28px minmax(0, 1fr) auto; align-items: center; gap: 10px; min-height: 44px; padding: 6px 10px; border-bottom: 1px solid var(--line); transition: background-color var(--t), transform 0.3s var(--ease-out); }
.pair:last-child { border-bottom: 0; }
a.pair:hover { background: color-mix(in oklch, var(--k13) 8%, transparent); transform: translateX(2px); }
.pair.row-in { animation: row-in 1.4s var(--ease-out) both; }
.logo { width: 28px; height: 28px; border-radius: 50%; background: var(--k4); display: grid; place-items: center; overflow: hidden; font-size: 0.6rem; font-weight: 700; color: var(--k10); border: 1px solid var(--line); }
.logo img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) contrast(1.05); }
.pair-main { display: grid; gap: 1px; min-width: 0; }
.pair-main b { font-size: 0.8125rem; font-weight: 700; letter-spacing: -0.01em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pair-main small { font-size: 0.6rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--mute); }
.pair-nums { display: grid; gap: 1px; text-align: right; }
.pair-nums b { font-size: 0.78rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.pair-nums small { font-size: 0.62rem; color: var(--mute); font-variant-numeric: tabular-nums; }
.board-note { padding: 10px; font-size: 0.68rem; color: var(--mute); border: 1px dashed var(--line); margin-top: 8px; }
.skel { display: block; position: relative; overflow: hidden; background: color-mix(in oklch, var(--k13) 9%, transparent); }
.skel::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, transparent, color-mix(in oklch, var(--k13) 16%, transparent), transparent); animation: scan 1.6s var(--ease-io) infinite; }
.brand-mark { width: 40px; height: 40px; object-fit: contain; transition: transform 0.4s var(--ease-out); }
.brand:hover .brand-mark { transform: rotate(-6deg) scale(1.08); }
i.skel { height: 9px; }
.s-w60 { width: 60%; } .s-w40 { width: 40%; } .s-w70 { width: 70%; justify-self: end; } .s-w50 { width: 50%; justify-self: end; }
.is-skel .logo { border-color: transparent; }
.pair-nums i { margin-left: auto; }

.stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.stat { border: 1px solid var(--line); background: color-mix(in oklch, var(--k0) 28%, transparent); padding: 10px 12px; transition: border-color var(--t), transform 0.3s var(--ease-out); }
.stat:hover { border-color: var(--k9); transform: translateY(-2px); }
.stat .num { display: block; margin-top: 4px; font-size: 1.375rem; font-weight: 800; letter-spacing: -0.02em; line-height: 1.1; }

/* flash on change (achromatic: bright pulse up, dim dip down) */
.flash-up { animation: flash-up 1.2s var(--ease-out) both; }
.flash-down { animation: flash-down 1.2s var(--ease-out) both; }

/* atlas */
.atlas { display: flex; flex-direction: column; min-width: 0; padding: 12px var(--gutter) 40px; gap: 16px; }
.atlas-head { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; }
.atlas-title h2 { font-size: clamp(1.75rem, 5vw, 2.5rem); font-weight: 900; letter-spacing: -0.04em; line-height: 1.05; margin-top: 6px; display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 12px; }
.tag { font-size: 0.6875rem; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--mute); }
.hint { margin-top: 8px; font-size: 0.6875rem; color: var(--mute); line-height: 1.5; }
.atlas-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.chip { display: inline-flex; align-items: center; min-height: 28px; padding: 0 10px; font-size: 0.62rem; letter-spacing: 0.06em; border: 1px solid var(--line); color: var(--soft); background: color-mix(in oklch, var(--k0) 40%, transparent); transition: border-color var(--t), color var(--t); }
.chip:hover { border-color: var(--k13); color: var(--k13); }
.zoom { display: inline-flex; align-items: center; border: 1px solid var(--line); }
.zoom-btn { width: 44px; height: 44px; font-size: 1.25rem; transition: background-color var(--t), color var(--t); }
.zoom-btn:hover { background: var(--k13); color: var(--k2); }
.zoom-v { min-width: 64px; text-align: center; font-size: 0.75rem; }
.answer-box { border: 1px solid var(--line); background: color-mix(in oklch, var(--k0) 44%, transparent); padding: 10px 12px; }
.typed { margin-top: 4px; min-height: 3.6em; font-size: 0.78rem; line-height: 1.5; color: var(--ink); line-clamp: 3; overflow-wrap: anywhere; }
.atlas-canvas-wrap { position: relative; aspect-ratio: 1 / 0.82; max-height: 60dvh; width: 100%; border: 1px solid var(--line); background: radial-gradient(60% 60% at 50% 50%, color-mix(in oklch, var(--k13) 8%, transparent), transparent 70%), color-mix(in oklch, var(--k0) 50%, transparent); overflow: hidden; touch-action: pan-y; }
.atlas-canvas { position: absolute; inset: 0; width: 100%; height: 100%; cursor: grab; touch-action: pan-y; }
.atlas-canvas:active { cursor: grabbing; }
.atlas-body { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; min-width: 0; }
.atlas-body > * { min-width: 0; }
.chap-list { display: flex; gap: 0; overflow-x: auto; scrollbar-width: none; border-bottom: 1px solid var(--line); -webkit-overflow-scrolling: touch; }
.chap-list::-webkit-scrollbar { display: none; }
.chap-btn { position: relative; flex: none; min-height: 44px; padding: 0 14px; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--mute); transition: color var(--t), background-color var(--t); white-space: nowrap; }
.chap-btn:hover { color: var(--ink); background: color-mix(in oklch, var(--k13) 6%, transparent); }
.chap-btn[aria-selected='true'] { color: var(--k13); }
.chap-bar { position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--k13); transform: scaleX(0); transform-origin: 0 50%; transition: transform 0.5s var(--ease-out); }
.chap-btn[aria-selected='true'] .chap-bar { transform: scaleX(1); }
.chap-stage { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; }
.chap-panel { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; }
.chap-panel:not([hidden]) { animation: callout-in 0.45s var(--ease-out) both; }
.chap-article h3 { margin: 6px 0 10px; font-size: 0.95rem; font-weight: 700; letter-spacing: -0.01em; text-wrap: balance; }
.chap-article p:not(.eyebrow) { font-size: 0.82rem; line-height: 1.65; color: color-mix(in oklch, var(--k12) 82%, transparent); text-wrap: pretty; }
.callouts { display: grid; gap: 8px; }
.chap-panel:not([hidden]) .callout { animation: callout-in 0.5s ease-out both; }
.chap-panel:not([hidden]) .callout:nth-child(2) { animation-delay: 0.08s; }
.chap-panel:not([hidden]) .callout:nth-child(3) { animation-delay: 0.16s; }
.callout { border-left: 2px solid var(--k13); background: color-mix(in oklch, var(--k13) 6%, transparent); padding: 10px 14px; transition: background-color var(--t), transform 0.3s var(--ease-out); }
.callout:hover { background: color-mix(in oklch, var(--k13) 12%, transparent); transform: translateX(4px); }
.callout-k { font-size: 1.25rem; font-weight: 800; letter-spacing: -0.02em; color: var(--k13); }
.callout-v { margin-top: 2px; font-size: 0.62rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--mute); }
.tape-fig { border: 1px solid var(--line); background: color-mix(in oklch, var(--k0) 40%, transparent); }
.tape-fig figcaption { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 8px 12px; border-bottom: 1px solid var(--line); font-size: 0.6rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--mute); }
.tape-fig figcaption span:first-child { display: inline-flex; align-items: center; gap: 8px; color: var(--soft); }
.tape-fig .dot { background: var(--k13); width: 6px; height: 6px; animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite; }
.tape { display: block; width: 100%; max-width: 100%; height: 160px; contain: size; }

/* light + dark section scaffolding */
.protocol, .docs, .gate, .foot { position: relative; }
.protocol { padding: 128px 0 104px; margin-top: -48px; clip-path: polygon(0 48px, 100% 0, 100% 100%, 0 100%); }
.gate { padding: 128px 0 96px; margin-top: -48px; clip-path: polygon(0 0, 100% 48px, 100% 100%, 0 100%); background: var(--k1); }
.docs { padding: 128px 0 104px; margin-top: -48px; clip-path: polygon(0 48px, 100% 0, 100% 100%, 0 100%); }
.foot { padding: 72px 0 48px; margin-top: -48px; background: var(--k0); }
.sec-title { font-size: clamp(2rem, 7vw, 4rem); font-weight: 900; letter-spacing: -0.05em; line-height: 1; margin: 10px 0 36px; max-width: 14em; text-wrap: balance; }
.cards { display: grid; grid-template-columns: 1fr; gap: 12px; }
.card { position: relative; padding: 24px 22px 28px; background: var(--k0); color: var(--k12); border: 1px solid var(--k0); overflow: hidden; transition: transform 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out); }
.card::after { content: ''; position: absolute; inset: auto 0 0 0; height: 3px; background: var(--k13); transform: scaleX(0); transform-origin: 0 50%; transition: transform 0.5s var(--ease-out); }
.card:hover { transform: translateY(-6px); box-shadow: 0 22px 44px color-mix(in oklch, var(--k0) 38%, transparent); }
.card:hover::after { transform: scaleX(1); }
.card-n { font-size: 0.75rem; color: var(--k8); letter-spacing: 0.2em; }
.card h3 { margin: 28px 0 8px; font-size: 1.75rem; font-weight: 900; letter-spacing: -0.04em; }
.card p { font-size: 0.95rem; color: var(--k10); line-height: 1.55; }
.gate-wrap { display: grid; gap: 36px; }
.gate-p { max-width: 34rem; font-size: 1.0625rem; line-height: 1.6; color: var(--k10); }
.verifier { display: grid; gap: 10px; align-content: start; padding: 22px; border: 1px solid var(--line); background: color-mix(in oklch, var(--k0) 60%, transparent); }
.v-in { width: 100%; min-height: 52px; padding: 0 14px; background: var(--k0); color: var(--k13); border: 1px solid var(--k6); font-size: 0.9375rem; transition: border-color var(--t), box-shadow 0.3s var(--ease-out); }
.v-in:hover { border-color: var(--k9); }
.v-in:focus { outline: none; border-color: var(--k13); box-shadow: 0 0 0 3px color-mix(in oklch, var(--k13) 22%, transparent); }
.v-in::placeholder { color: var(--k7); }
.v-out { min-height: 44px; display: flex; align-items: center; font-size: 0.78rem; color: var(--k9); overflow-wrap: anywhere; }
.v-out[data-ok='true'] { color: var(--k13); }
.doc-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
.doc { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; min-height: 72px; padding: 18px 4px; border-bottom: 1px solid var(--line); transition: padding 0.4s var(--ease-out), background-color var(--t); }
.doc span { font-size: 1.25rem; font-weight: 800; letter-spacing: -0.02em; }
.doc em { font-style: normal; font-size: 0.9rem; color: var(--mute); }
.doc:hover { padding-inline: 18px; background: var(--k0); color: var(--k13); }
.doc:hover em { color: var(--k9); }
.foot-wrap { display: grid; gap: 8px; }
.foot-word { font-size: clamp(4rem, 22vw, 14rem); font-weight: 900; letter-spacing: -0.07em; line-height: 0.85; color: color-mix(in oklch, var(--k13) 10%, transparent); overflow-wrap: anywhere; }
.foot-dom { font-size: 0.8125rem; color: var(--k9); }
.foot-note { font-size: 0.6875rem; color: var(--k7); letter-spacing: 0.04em; }

/* brief dialog */
.brief { position: fixed; inset: 16px 16px auto auto; margin: 0; padding: 0; width: min(calc(100vw - 32px), 440px); max-width: none; height: min(calc(100dvh - 32px), 820px); border: 1px solid color-mix(in oklch, var(--k13) 50%, transparent); border-radius: 12px; background: var(--k2); color: var(--k12); overflow: hidden; opacity: 1; box-shadow: 0 24px 80px color-mix(in oklch, var(--k0) 80%, transparent), 0 0 0 1px color-mix(in oklch, var(--k13) 12%, transparent); transition: opacity 0.3s var(--ease-out), translate 0.3s var(--ease-out), display 0.3s allow-discrete, overlay 0.3s allow-discrete; }
.brief:not([open]) { display: none; }
@starting-style { .brief[open] { opacity: 0; translate: 24px 0; } }
.brief::backdrop { background: color-mix(in oklch, var(--k0) 60%, transparent); }
.brief-in { display: flex; flex-direction: column; height: 100%; }
.brief-head { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: color-mix(in oklch, var(--k0) 40%, transparent); }
.panel-dark .brief-head, .brief { --line: color-mix(in oklch, var(--k6) 62%, transparent); }
.brief-mark { display: grid; place-items: center; width: 36px; height: 36px; flex: none; border-radius: 8px; overflow: hidden; background: color-mix(in oklch, var(--k13) 14%, transparent); }
.brief-mark img { width: 100%; height: 100%; object-fit: cover; }
.brief-ttl { min-width: 0; flex: 1; }
.brief-ttl .eyebrow { font-size: 0.56rem; color: var(--k8); }
.brief-ttl h2 { font-size: 0.875rem; font-weight: 700; line-height: 1.25; }
.brief-x { display: grid; place-items: center; width: 44px; height: 44px; flex: none; transition: background-color var(--t), color var(--t); }
.brief-x:hover { background: var(--k13); color: var(--k2); }
.brief-nav { display: flex; gap: 4px; padding: 8px 12px; border-bottom: 1px solid var(--line); overflow-x: auto; scrollbar-width: none; }
.brief-nav a { display: grid; place-items: center; min-width: 44px; min-height: 44px; font-size: 0.7rem; color: var(--k9); border: 1px solid transparent; transition: color var(--t), border-color var(--t); }
.brief-nav a:hover { color: var(--k13); border-color: var(--k13); }
.brief-body { flex: 1; overflow-y: auto; padding: 16px; display: grid; gap: 20px; align-content: start; }
.brief-body h3 { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--k13); margin-bottom: 8px; }
.brief-body p { font-size: 0.85rem; line-height: 1.65; color: color-mix(in oklch, var(--k12) 82%, transparent); }
.brief-end { font-size: 0.65rem !important; color: var(--k7) !important; text-align: center; }

/* reveal + parallax */
.js [data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity 0.45s var(--ease-out), transform 0.45s var(--ease-out); transition-delay: var(--d, 0s); }
.js [data-reveal].is-in { opacity: 1; transform: none; }

/* brand art */
.hero-art { position: absolute; z-index: -1; right: 1%; top: 12%; width: min(40vw, 560px); aspect-ratio: 1; pointer-events: none; opacity: 0.9; }
.hero-logo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; animation: bob 3.2s ease-in-out infinite; }
.orb { position: absolute; border-radius: 50%; background: radial-gradient(circle at 32% 26%, color-mix(in oklch, var(--k13) 70%, transparent) 0%, color-mix(in oklch, var(--k10) 40%, transparent) 9%, color-mix(in oklch, var(--k8) 30%, transparent) 40%, transparent 72%); animation: bubble-float 14s var(--ease-io) infinite; will-change: transform; }
.orb.o1 { width: 38%; height: 38%; left: -6%; top: 52%; }
.orb.o2 { width: 22%; height: 22%; right: 4%; top: 2%; animation-duration: 10s; animation-delay: -4s; }
.hero-inner { position: relative; }
.display, .lede, .hero-actions, .hero-strip { position: relative; }
@media (max-width: 47.99rem) { .hero { padding-bottom: calc(66vw + 72px); } .hero-art { opacity: 0.9; right: 17vw; top: auto; bottom: 56px; width: 66vw; } .display { font-size: clamp(3.5rem, 16vw, 6rem); } }

/* keyframes (timings measured from the reference desk) */
@keyframes bob { 0%, 100% { transform: translateY(0) scale(1.02); } 50% { transform: translateY(-4%) scale(1.02); } }
@keyframes bubble-float { 0%, 100% { transform: translate(0) scale(1); } 33% { transform: translate(14px, -26px) scale(1.03); } 66% { transform: translate(-12px, -10px) scale(0.98); } }
@keyframes shimmer { to { background-position: 200% 0; } }
@keyframes ping { 75%, 100% { opacity: 0; transform: scale(2); } }
@keyframes pulse { 50% { opacity: 0.5; } }
@keyframes caret { 0%, 70%, 100% { opacity: 1; } 20%, 50% { opacity: 0; } }
@keyframes scan { 0% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }
@keyframes cue { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); } 100% { transform: scaleY(1); opacity: 0; } }
@keyframes desk-scroll { 0% { transform: translateY(0); } 100% { transform: translateY(-50%); } }
@keyframes callout-in { 0% { opacity: 0; transform: translateY(6px); } 100% { opacity: 1; transform: translateY(0); } }
@keyframes row-in { 0% { opacity: 0; background-color: color-mix(in oklch, var(--k13) 16%, transparent); transform: translateX(14px); } 40% { opacity: 1; transform: translateX(0); } 100% { background-color: transparent; } }
@keyframes flash-up { 0%, 18% { color: var(--k13); text-shadow: 0 0 12px color-mix(in oklch, var(--k13) 60%, transparent); } 100% { color: inherit; } }
@keyframes flash-down { 0%, 18% { color: var(--k8); text-shadow: 0 0 12px color-mix(in oklch, var(--k13) 20%, transparent); } 100% { color: inherit; } }
@keyframes cell-ping { 0% { filter: brightness(2.2); transform: scale(1.9); box-shadow: 0 0 8px 2px color-mix(in oklch, var(--k13) 60%, transparent); } 100% { filter: brightness(1); transform: scale(1); box-shadow: 0 0 0 0 transparent; } }

/* responsive */
@media (min-width: 40rem) {
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .callouts { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .gate-wrap { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); align-items: start; gap: 48px; }
  .atlas, .rail { padding-inline: 24px; }
  .wrap, .hero-inner { padding-inline: 24px; }
  .topbar { padding-inline: 24px; }
}
@media (max-width: 47.99rem) {
  .topbar { grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: 'brand social' 'ca ca'; padding-block: 6px 10px; row-gap: 2px; }
  .brand { grid-area: brand; }
  .social { grid-area: social; }
  .ca { grid-area: ca; }
  .ca-btn { justify-content: flex-start; text-align: left; flex-wrap: nowrap; }
  .ca-fb { position: absolute; right: 8px; top: -11px; padding: 0 6px; background: var(--k2); line-height: 1.5; }
}
@media (min-width: 48rem) {
  .topbar { column-gap: 24px; }
  .ca-btn { width: auto; max-width: 100%; justify-self: center; }
  .cards { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .atlas-head { grid-template-columns: minmax(0, 1fr) auto; align-items: start; }
  .atlas-head .answer-box { grid-column: 1 / -1; }
  .atlas-meta { flex-direction: column; align-items: flex-end; }
}
@media (min-width: 64rem) {
  .desk-grid { grid-template-columns: var(--rail-w) minmax(0, 1fr); }
  .rail { position: sticky; top: var(--topbar-h); height: calc(100dvh - var(--topbar-h)); overflow-y: auto; padding: 16px 16px 16px 20px; scrollbar-width: thin; scrollbar-color: var(--k5) transparent; border-right: 1px solid var(--line); }
  .atlas { padding: 20px 28px 56px; }
  .hero-inner, .wrap, .topbar { padding-inline: 32px; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .atlas-body { grid-template-columns: minmax(0, 1fr); }
}
@media (min-width: 80rem) {
  .atlas-body { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); align-items: start; }
  .chap-nav { grid-column: 1 / -1; }
  .tape-fig { grid-column: 1 / -1; }
}
@media (hover: hover) {
  .pair { cursor: default; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition-duration: 0.01ms !important; transition-delay: 0s !important; scroll-behavior: auto !important; }
  .js [data-reveal] { opacity: 1; transform: none; }
  .brief-btn .ping, .scroll-cue i { display: none; }
  .ledger-scroll { transform: none; }
}

.sr-copy { position: fixed; left: -9999px; top: 0; opacity: 0; }