/* ─── Tokens ──────────────────────────────────────────────── */
:root {
  /* surfaces */
  --surface-0: #0A0A0B;
  --surface-1: #101012;
  --surface-2: #17171A;
  --surface-3: #1E1E22;

  /* ink */
  --ink: #F4F1EA;
  --ink-muted: #A0A0A8;
  --ink-subtle: #6F6F78;
  --ink-dim: #48484F;

  /* accent — brass */
  --accent: #C8A56A;
  --accent-muted: #8A7550;
  --accent-dim: #4A3F2A;
  --accent-glow: rgba(200, 165, 106, 0.12);

  /* signal colors */
  --ok: #7FB392;
  --warn: #D4A34A;
  --danger: #D48280;
  --info: #8DA4C4;
  --violet: #A58BC4;

  /* borders */
  --border: #22222A;
  --border-muted: #18181D;

  /* radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* layout */
  --content-max: 1100px;
  --gutter: 28px;
  --section-gap-y: 140px;

  /* type */
  --f-sans: 'Geist', ui-sans-serif, system-ui, sans-serif;
  --f-mono: 'Geist Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

/* ─── Reset ──────────────────────────────────────────────── */
*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--f-sans);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--surface-0);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg { display: block; }

a {
  color: inherit;
  text-decoration: none;
}

ul, ol { margin: 0; padding: 0; list-style: none; }

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

::selection {
  background: var(--accent);
  color: var(--surface-0);
}

/* faint lattice texture — very low opacity */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(244, 241, 234, 0.05) 1px, transparent 1.5px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
}

main, header, footer { position: relative; z-index: 1; }

/* ─── Typography ─────────────────────────────────────────── */
.display {
  font-family: var(--f-sans);
  font-weight: 500;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 1.05;
  letter-spacing: -0.035em;
  margin: 0 0 24px;
  color: var(--ink);
}

.section-heading {
  font-weight: 500;
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin: 0 0 20px;
  color: var(--ink);
  max-width: 820px;
}

.section-sub {
  color: var(--ink-muted);
  font-size: 17px;
  line-height: 1.6;
  margin: 0 0 64px;
  max-width: 720px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-mono);
  font-weight: 500;
  font-size: 11px;
  line-height: 1;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-subtle);
  margin: 0 0 24px;
}

.eyebrow-accent { color: var(--accent); }

.eyebrow-live { color: var(--accent); }

.mono { font-family: var(--f-mono); }

/* ─── Container ──────────────────────────────────────────── */
.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.container-narrow {
  max-width: 640px;
}

/* ─── Section base ───────────────────────────────────────── */
.section {
  padding: var(--section-gap-y) 0;
  position: relative;
}

/* ─── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-family: var(--f-sans);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.12s ease;
  white-space: nowrap;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--accent);
  color: var(--surface-0);
  border-color: var(--accent);
}

.btn-primary:hover {
  background: #D6B377;
  border-color: #D6B377;
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--border);
}

.btn-ghost:hover {
  background: var(--surface-2);
  border-color: var(--ink-dim);
  color: var(--accent);
}

.btn-block {
  width: 100%;
  padding-top: 15px;
  padding-bottom: 15px;
}

.arrow-down {
  display: inline-block;
  transition: transform 0.2s ease;
}

.btn-ghost:hover .arrow-down { transform: translateY(2px); }

/* ─── Nav ────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 18px 0;
  transition: background-color 0.25s ease, border-color 0.25s ease, backdrop-filter 0.25s ease;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(10, 10, 11, 0.72);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom-color: var(--border-muted);
}

.nav-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand-mark { flex-shrink: 0; }

.brand-word {
  font-family: var(--f-sans);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.brand-word-muted {
  font-family: var(--f-sans);
  font-weight: 400;
  font-size: 15px;
  margin-left: 6px;
  color: var(--ink-muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  font-size: 13.5px;
  color: var(--ink-muted);
  transition: color 0.15s ease;
}

.nav-links a:hover { color: var(--ink); }

.nav-cta {
  padding: 9px 16px;
  font-size: 13px;
}

/* ─── Hero ───────────────────────────────────────────────── */
.hero {
  position: relative;
  padding: 72px 0 120px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 500px at 80% 30%, var(--accent-glow), transparent 70%),
    radial-gradient(600px 400px at 10% 80%, rgba(200, 165, 106, 0.05), transparent 70%);
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 64px;
  align-items: center;
}

.hero-copy { max-width: 640px; }

.lede {
  color: var(--ink-muted);
  font-size: 19px;
  line-height: 1.6;
  margin: 0 0 40px;
  max-width: 560px;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.signal-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.signal-pills li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-1);
  font-size: 12.5px;
  color: var(--ink-muted);
}

.pill-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent);
  animation: pulse 2.2s ease-out infinite;
  flex-shrink: 0;
}

@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(200, 165, 106, 0.6); }
  80%  { box-shadow: 0 0 0 10px rgba(200, 165, 106, 0); }
  100% { box-shadow: 0 0 0 0 rgba(200, 165, 106, 0); }
}

.hero-mark {
  position: relative;
  width: 280px;
  height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  justify-self: center;
}

.hero-mark-glow {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow), transparent 60%);
  filter: blur(20px);
}

#kenaz-hero { position: relative; z-index: 1; }

#kenaz-path {
  stroke-dasharray: 110;
  stroke-dashoffset: 110;
  transition: stroke-dashoffset 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.kenaz-node {
  opacity: 0;
  transition: opacity 0.4s ease;
}

.kenaz-animate #kenaz-path { stroke-dashoffset: 0; }
.kenaz-animate .kenaz-node { opacity: 1; }
.kenaz-animate .kenaz-node:nth-of-type(1) { transition-delay: 0.2s; }
.kenaz-animate .kenaz-node:nth-of-type(2) { transition-delay: 0.9s; }
.kenaz-animate .kenaz-node:nth-of-type(3) { transition-delay: 1.5s; }

/* ─── Cards & Grids ──────────────────────────────────────── */
.grid {
  display: grid;
  gap: 20px;
}
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.card-title {
  font-family: var(--f-sans);
  font-weight: 500;
  font-size: 18px;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  color: var(--ink);
}

.card p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 15px;
  line-height: 1.6;
}

.problem-card:hover,
.ent-card:hover {
  border-color: var(--ink-dim);
  background: var(--surface-2);
}

/* ─── Kenaz subsections ──────────────────────────────────── */
.kenaz-sub {
  padding-top: 72px;
  margin-top: 16px;
  border-top: 1px solid var(--border-muted);
}

.kenaz-sub:first-of-type {
  padding-top: 40px;
  border-top: none;
}

.kenaz-sub-head {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 16px;
  row-gap: 6px;
  margin-bottom: 32px;
  max-width: 820px;
}

.kenaz-index {
  grid-row: 1 / span 2;
  font-family: var(--f-mono);
  font-size: 14px;
  color: var(--accent);
  padding-top: 4px;
}

.kenaz-sub-head h3 {
  margin: 0;
  font-weight: 500;
  font-size: 26px;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.kenaz-sub-sub {
  margin: 0;
  color: var(--ink-muted);
  font-size: 15.5px;
  max-width: 680px;
}

/* observer sources */
.kenaz-sources {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.source {
  padding: 16px 18px;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: grid;
  gap: 6px;
}

.source-name {
  font-weight: 500;
  font-size: 14px;
  color: var(--ink);
}

.source-hint {
  font-size: 12.5px;
  color: var(--ink-subtle);
}

.source-pill {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--accent);
  background: rgba(200, 165, 106, 0.08);
  border: 1px solid var(--accent-dim);
  padding: 3px 8px;
  border-radius: 999px;
  justify-self: start;
  letter-spacing: 0.03em;
}

/* sandbox row */
.sandbox-row {
  display: grid;
  grid-template-columns: 1fr 1.1fr 0.9fr;
  gap: 14px;
}

.sandbox-panel {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px;
}

.panel-eyebrow {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-subtle);
  margin: 0 0 16px;
}

.checklist {
  display: grid;
  gap: 10px;
}
.checklist li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--ink);
}
.check {
  color: var(--accent);
  font-family: var(--f-mono);
  font-size: 13px;
  line-height: 1.5;
}

.codeblock {
  margin: 0;
  padding: 16px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--f-mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink);
  overflow-x: auto;
  white-space: pre;
}

.c-key { color: var(--ink); }
.c-val { color: var(--accent); }

.steps {
  display: grid;
  gap: 12px;
  counter-reset: step;
}
.steps li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--ink);
}
.step-n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border: 1px solid var(--border);
  border-radius: 50%;
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--ink-subtle);
  flex-shrink: 0;
}

/* learning grid */
.learning-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}
.mini-card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: grid;
  gap: 4px;
}
.mini-eyebrow {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-subtle);
  margin: 0 0 4px;
}
.mini-value {
  font-family: var(--f-mono);
  font-size: 15px;
  color: var(--ink);
  margin: 0;
}
.mini-note {
  font-size: 12.5px;
  color: var(--ink-muted);
  margin: 0;
}

/* ledger */
.ledger {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--surface-1);
  font-family: var(--f-mono);
}
.ledger-row {
  display: grid;
  grid-template-columns: 70px 120px 1fr 110px;
  gap: 16px;
  padding: 12px 18px;
  align-items: center;
  border-top: 1px solid var(--border-muted);
  font-size: 12.5px;
}
.ledger-row:first-child { border-top: none; }
.ledger-n {
  color: var(--ink-subtle);
  letter-spacing: 0.02em;
}
.ledger-type {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.02em;
  justify-self: start;
}
.ledger-type.ok     { color: var(--ok);     background: rgba(127, 179, 146, 0.08); }
.ledger-type.warn   { color: var(--warn);   background: rgba(212, 163, 74, 0.10); }
.ledger-type.info   { color: var(--info);   background: rgba(141, 164, 196, 0.08); }
.ledger-type.accent { color: var(--accent); background: rgba(200, 165, 106, 0.10); }

.ledger-meta {
  color: var(--ink-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ledger-hash {
  color: var(--ink-subtle);
  text-align: right;
  font-size: 12px;
  letter-spacing: 0.01em;
}

/* inference tiers */
.tiers {
  display: grid;
  gap: 14px;
}
.tier {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 22px;
}
.tier-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.tier-pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid transparent;
}
.tier-pill-full {
  color: var(--accent);
  border-color: var(--accent-dim);
  background: rgba(200, 165, 106, 0.08);
}
.tier-pill-hybrid {
  color: var(--info);
  border-color: rgba(141, 164, 196, 0.3);
  background: rgba(141, 164, 196, 0.06);
}
.tier-pill-saas {
  color: var(--ink-muted);
  border-color: var(--border);
  background: var(--surface-2);
}
.tier-hw {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--ink-subtle);
}
.tier-bar-track {
  height: 4px;
  background: var(--surface-2);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 10px;
}
.tier-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-muted), var(--accent));
  border-radius: 2px;
}
.tier-note {
  margin: 0;
  font-size: 13px;
  color: var(--ink-muted);
}

/* ─── Architecture ───────────────────────────────────────── */
.arch {
  display: grid;
  gap: 0;
}
.arch-layer {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px 26px 26px;
}
.arch-app  { border-left: 2px solid var(--accent); }
.arch-host { border-left: 2px solid var(--info); }
.arch-vm   { border-left: 2px solid var(--warn); }

.arch-layer-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}
.arch-layer-n {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-subtle);
  background: var(--surface-2);
  padding: 3px 8px;
  border-radius: 4px;
}
.arch-layer-name {
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.arch-nodes {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}
.arch-node {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: grid;
  gap: 4px;
  position: relative;
}
.node-label {
  font-size: 13.5px;
  color: var(--ink);
  font-weight: 500;
}
.node-tech {
  font-family: var(--f-mono);
  font-size: 11.5px;
  color: var(--ink-subtle);
}
.node-live {
  position: absolute;
  top: 10px;
  right: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.arch-inline-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--border);
}
.inline-flow-label {
  font-family: var(--f-mono);
  font-size: 11.5px;
  color: var(--ink-subtle);
  letter-spacing: 0.03em;
}

.arch-flow {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
}
.flow-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}
.flow-label {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-subtle);
}

.arch-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid var(--border-muted);
}
.arch-legend span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  color: var(--ink-subtle);
}
.leg-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}
.leg-accent { background: var(--accent); }
.leg-ok     { background: var(--ok); }
.leg-warn   { background: var(--warn); }
.leg-info   { background: var(--info); }

/* ─── Privacy ────────────────────────────────────────────── */
.privacy-grid { margin-bottom: 36px; }

.bullets {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}
.bullets li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  color: var(--ink-muted);
  line-height: 1.55;
}
.bullets li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--ink-dim);
  font-family: var(--f-mono);
}

/* ─── Callout ────────────────────────────────────────────── */
.callout {
  margin-top: 32px;
  padding: 28px 32px;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  border-radius: var(--radius-md);
}
.callout-eyebrow {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 10px;
}
.callout-body {
  margin: 0;
  color: var(--ink);
  font-size: 16px;
  line-height: 1.6;
  max-width: 720px;
}
.callout-body strong { color: var(--ink); font-weight: 500; }
.callout-body .mono { color: var(--accent); }

/* ─── Pricing ────────────────────────────────────────────── */
.pricing {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.price-tier {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
  display: grid;
  gap: 14px;
  align-content: start;
}
.price-tier-featured {
  border-color: var(--accent-dim);
  background: linear-gradient(180deg, rgba(200, 165, 106, 0.04), transparent 60%), var(--surface-1);
}
.price-name {
  font-weight: 500;
  font-size: 22px;
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--ink);
}
.price-amount {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.price-big {
  font-family: var(--f-sans);
  font-weight: 500;
  font-size: 30px;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.price-cadence {
  font-size: 14px;
  color: var(--ink-subtle);
}
.price-hint {
  margin: 0;
  font-size: 13px;
  color: var(--ink-subtle);
  font-family: var(--f-mono);
}
.price-tier .bullets { margin-bottom: 18px; margin-top: 4px; }

/* ─── Stack table ────────────────────────────────────────── */
.stack-table {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--surface-1);
}
.stack-row {
  display: grid;
  grid-template-columns: 200px 260px 1fr;
  gap: 24px;
  padding: 16px 24px;
  align-items: center;
  border-top: 1px solid var(--border-muted);
  font-size: 14px;
}
.stack-row:first-child { border-top: none; }
.stack-head {
  background: var(--surface-2);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-subtle);
}
.stack-layer {
  color: var(--ink);
  font-weight: 500;
}
.stack-row .mono { color: var(--accent); font-size: 13px; }
.stack-row > span:last-child { color: var(--ink-muted); }

/* ─── Waitlist ───────────────────────────────────────────── */
.section-waitlist {
  text-align: center;
}
.section-waitlist .eyebrow,
.section-waitlist .section-heading,
.section-waitlist .section-sub {
  margin-left: auto;
  margin-right: auto;
}
.section-waitlist .section-heading {
  max-width: unset;
}
.section-waitlist .section-sub {
  margin-bottom: 44px;
}

.waitlist-form {
  display: grid;
  gap: 14px;
  text-align: left;
}

.field {
  display: grid;
  gap: 6px;
}
.field-label {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-subtle);
}

.form-input,
.form-select {
  width: 100%;
  padding: 13px 16px;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--ink);
  font-size: 15px;
  font-family: var(--f-sans);
  transition: border-color 0.15s ease, background 0.15s ease;
  appearance: none;
  -webkit-appearance: none;
}

.form-select {
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='none' stroke='%23A0A0A8' stroke-width='1.5' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 18px center;
  padding-right: 42px;
}

.form-input::placeholder { color: var(--ink-subtle); }

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--surface-2);
}

.form-fine {
  margin: 4px 0 0;
  font-size: 12.5px;
  color: var(--ink-subtle);
  text-align: center;
}

.form-error {
  display: none;
  margin: 10px 0 0;
  font-family: var(--f-mono);
  font-size: 12.5px;
  color: var(--danger);
  text-align: center;
}

.waitlist-confirm {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 32px 24px;
  text-align: center;
}
.confirm-title {
  margin: 0;
  font-weight: 500;
  font-size: 22px;
  color: var(--ink);
  letter-spacing: -0.015em;
}
.confirm-body {
  margin: 0;
  font-size: 15px;
  color: var(--ink-muted);
  max-width: 400px;
}

/* ─── Footer ─────────────────────────────────────────────── */
.footer {
  padding: 60px 0 80px;
  border-top: 1px solid var(--border-muted);
  margin-top: 80px;
}
.footer-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 28px 36px;
  align-items: center;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-sans);
  font-size: 14px;
  color: var(--ink-muted);
}
.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 24px;
}
.footer-links a {
  font-size: 13px;
  color: var(--ink-subtle);
  transition: color 0.15s ease;
}
.footer-links a:hover { color: var(--ink); }
.footer-meta {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--ink-subtle);
  letter-spacing: 0.02em;
  justify-self: end;
}
.footer-product {
  grid-column: 1 / -1;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.03em;
  color: var(--ink-subtle);
  padding-top: 20px;
  border-top: 1px dashed var(--border-muted);
  justify-content: center;
}

/* ─── Fade-up reveal ─────────────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .fade-up { opacity: 1; transform: none; }
  #kenaz-path { stroke-dashoffset: 0 !important; }
  .kenaz-node { opacity: 1 !important; }
}

/* ─── Responsive ─────────────────────────────────────────── */

/* 1024 */
@media (max-width: 1024px) {
  :root { --section-gap-y: 110px; }
  .nav-links { gap: 20px; }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .arch-nodes { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sandbox-row { grid-template-columns: 1fr 1fr; }
  .sandbox-panel:last-child { grid-column: 1 / -1; }
  .stack-row { grid-template-columns: 160px 220px 1fr; gap: 18px; padding: 14px 20px; }
}

/* 768 */
@media (max-width: 768px) {
  :root {
    --section-gap-y: 90px;
    --gutter: 22px;
  }
  .hero { padding: 48px 0 80px; }
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
  }
  .hero-mark {
    width: 200px;
    height: 200px;
    justify-self: start;
  }
  #kenaz-hero { width: 180px; height: 180px; }

  .nav-links { display: none; }
  .nav-cta { padding: 8px 14px; font-size: 12.5px; }

  .grid-2,
  .grid-3,
  .grid-4 { grid-template-columns: minmax(0, 1fr); }

  .kenaz-sources { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sandbox-row { grid-template-columns: minmax(0, 1fr); }
  .sandbox-panel:last-child { grid-column: auto; }
  .learning-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .arch-nodes { grid-template-columns: minmax(0, 1fr); }

  .ledger-row {
    grid-template-columns: 60px 1fr;
    gap: 8px 12px;
  }
  .ledger-meta,
  .ledger-hash { grid-column: 1 / -1; }
  .ledger-hash { text-align: left; }

  .stack-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
    padding: 14px 18px;
  }
  .stack-head { display: none; }

  .pricing { grid-template-columns: minmax(0, 1fr); }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    text-align: center;
    justify-items: center;
    gap: 16px;
  }
  .footer-meta { justify-self: center; }
}

/* 375 */
@media (max-width: 400px) {
  .hero-ctas { gap: 10px; }
  .hero-ctas .btn { width: 100%; }
  .kenaz-sources { grid-template-columns: minmax(0, 1fr); }
  .learning-grid { grid-template-columns: minmax(0, 1fr); }
  .kenaz-sub-head {
    grid-template-columns: minmax(0, 1fr);
  }
  .kenaz-index { grid-row: auto; }
  .callout { padding: 22px 20px; }
  .price-tier { padding: 26px 22px; }
}