/* =============================================================
   Sovereign Clearinghouse — design system
   Art direction: regulated cryptographic infrastructure.
   Deep ink + warm ledger paper. Copper as restraint accent.
   Cyan for invariant/data callouts. Mono details for metrics.
   ============================================================= */

:root {
  /* ---- Light mode (warm ledger paper) ---- */
  --paper:        #F2EDE3;
  --paper-2:      #EAE3D4;
  --paper-3:      #DED5C2;
  --ink:          #14181B;
  --ink-2:        #2A3137;
  --ink-3:        #4C5560;
  --ink-mute:     #7C8590;
  --rule:         #2A31371F;
  --rule-strong:  #2A313740;

  --copper:       #B4633A;
  --copper-deep:  #8E4823;
  --cyan:         #1F6E78;
  --cyan-deep:    #134850;

  --signal-ok:    #2F6B3B;
  --signal-warn:  #A26516;
  --signal-stop:  #8A2D2D;

  --bg:           var(--paper);
  --surface:      #FAF6EC;
  --surface-2:    #EFE8D8;
  --fg:           var(--ink);
  --fg-2:         var(--ink-2);
  --fg-3:         var(--ink-3);
  --fg-mute:      var(--ink-mute);
  --accent:       var(--copper);
  --accent-hover: var(--copper-deep);
  --invariant:    var(--cyan);

  /* ---- Type ---- */
  --font-display: "Bespoke Serif", "GT Sectra", "Iowan Old Style", Georgia, serif;
  --font-body:    "Switzer", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:    "JetBrains Mono", "IBM Plex Mono", ui-monospace, "SF Mono", monospace;

  /* ---- Scale ---- */
  --text-xs:   0.75rem;   /* 12 */
  --text-sm:   0.8125rem; /* 13 */
  --text-base: 1rem;      /* 16 */
  --text-md:   1.0625rem; /* 17 */
  --text-lg:   1.25rem;   /* 20 */
  --text-xl:   1.5rem;    /* 24 */
  --text-2xl:  2rem;      /* 32 */
  --text-3xl:  2.75rem;   /* 44 */
  --text-4xl:  3.75rem;   /* 60 */
  --text-hero: clamp(2.5rem, 5.4vw + 0.5rem, 5.25rem);

  /* ---- Spacing ---- */
  --gutter: clamp(1.25rem, 3vw, 2.5rem);
  --section: clamp(4rem, 9vw, 8.5rem);
  --container: 1280px;
  --measure: 64ch;

  --radius: 4px;
  --radius-lg: 8px;

  --ease: cubic-bezier(.2, .7, .2, 1);
}

[data-theme="dark"] {
  --bg:           #0E1215;
  --surface:      #151A1E;
  --surface-2:    #1C2227;
  --fg:           #E7E3D9;
  --fg-2:         #C8C3B6;
  --fg-3:         #9A968B;
  --fg-mute:      #6F6C64;
  --rule:         #E7E3D914;
  --rule-strong:  #E7E3D930;

  --accent:       #D17A4D;
  --accent-hover: #E89067;
  --invariant:    #5BAAB5;

  --signal-ok:    #6FB07A;
  --signal-warn:  #D49653;
  --signal-stop:  #C16868;
}

/* =============================================================
   Reset + base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-md);
  line-height: 1.55;
  color: var(--fg);
  background: var(--bg);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
}

img, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.04;
  margin: 0;
  color: var(--fg);
}
h1 { font-size: var(--text-hero); font-weight: 450; }
h2 { font-size: clamp(2rem, 3.5vw, 3rem); font-weight: 450; }
h3 { font-size: var(--text-xl); font-weight: 500; letter-spacing: -0.015em; }
h4 { font-size: var(--text-lg); font-weight: 500; letter-spacing: -0.01em; }

p { margin: 0; max-width: var(--measure); }

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

/* =============================================================
   Layout
   ============================================================= */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

section { padding-block: var(--section); position: relative; }
section + section { border-top: 1px solid var(--rule); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--fg-3);
  font-weight: 500;
}

.lede {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 1.5vw + 0.6rem, 1.75rem);
  line-height: 1.35;
  color: var(--fg-2);
  font-weight: 400;
  letter-spacing: -0.01em;
  max-width: 38ch;
}

.muted { color: var(--fg-3); }

.mono {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}

/* =============================================================
   Header
   ============================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--rule);
}
.site-header .container {
  display: flex; align-items: center; gap: 2rem;
  height: 64px;
}
.brand { display: flex; align-items: center; gap: 0.65rem; color: var(--fg); }
.brand-mark { width: 28px; height: 28px; color: var(--accent); flex-shrink: 0; }
.brand-name { font-family: var(--font-display); font-size: 1.0625rem; font-weight: 500; letter-spacing: -0.01em; }
.brand-name small { font-family: var(--font-mono); font-size: 0.6875rem; color: var(--fg-3); font-weight: 400; letter-spacing: 0.08em; text-transform: uppercase; display: block; margin-top: 1px;}

.nav {
  margin-left: auto;
  display: flex;
  gap: clamp(0.85rem, 1.2vw, 1.45rem);
  align-items: center;
}
.nav a {
  font-size: 0.875rem;
  color: var(--fg-2);
  font-weight: 450;
  transition: color 0.2s var(--ease);
}
.nav a:hover { color: var(--accent); }
.nav .btn {
  padding-inline: 0.8rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.55rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--paper);
  cursor: pointer;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
  white-space: nowrap;
}
.btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn:active { transform: translateY(1px); }
.btn-ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--rule-strong);
}
.btn-ghost:hover { background: var(--surface-2); border-color: var(--fg-3); color: var(--fg); }

.theme-toggle {
  width: 36px; height: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--rule-strong);
  background: transparent;
  color: var(--fg-2);
  display: grid; place-items: center;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.theme-toggle:hover { background: var(--surface-2); color: var(--fg); }
.theme-toggle svg { width: 16px; height: 16px; }
[data-theme="dark"] .theme-toggle .sun { display: block; }
[data-theme="dark"] .theme-toggle .moon { display: none; }
.theme-toggle .sun { display: none; }
.theme-toggle .moon { display: block; }

.nav-toggle { display: none; }

/* =============================================================
   Hero
   ============================================================= */
.hero {
  padding-block: clamp(4rem, 9vw, 8rem) clamp(3rem, 6vw, 5rem);
  position: relative;
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: clamp(2.5rem, 5vw, 5rem);
  align-items: start;
}
.hero-inner > * { min-width: 0; }
.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.4rem 0.75rem 0.4rem 0.6rem;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-2);
  margin-bottom: 1.75rem;
  letter-spacing: 0.06em;
  max-width: 100%;
  white-space: normal;
}
.hero-status .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--signal-ok);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--signal-ok) 22%, transparent);
}
.hero h1 { letter-spacing: -0.025em; max-width: 16ch; }
.hero h1 em {
  font-style: normal;
  color: var(--accent);
  font-family: var(--font-display);
}
.hero-lede {
  margin-top: 1.5rem;
  font-size: clamp(1.0625rem, 0.9vw + 0.85rem, 1.25rem);
  line-height: 1.55;
  color: var(--fg-2);
  max-width: min(46ch, 100%);
  font-family: var(--font-body);
  font-weight: 400;
}
.hero-actions {
  margin-top: 2rem;
  display: flex; gap: 0.75rem; flex-wrap: wrap;
  max-width: 100%;
}
.hero-meta {
  margin-top: 2.5rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--rule);
  max-width: 540px;
}
.hero-meta dt {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg-3);
  margin-bottom: 0.4rem;
}
.hero-meta dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  color: var(--fg);
  font-weight: 500;
  letter-spacing: -0.01em;
}

/* Hero visual: ledger panel */
.ledger-card {
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--fg-2);
  position: relative;
  box-shadow: 0 1px 0 var(--rule), 0 24px 60px -28px color-mix(in srgb, var(--ink) 30%, transparent);
}
[data-theme="dark"] .ledger-card { box-shadow: 0 1px 0 var(--rule-strong), 0 30px 80px -30px #000; }

.ledger-head {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--fg-3);
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 1rem;
}
.ledger-head .tag {
  color: var(--invariant);
}
.ledger-row {
  display: grid;
  grid-template-columns: 110px 1fr auto;
  gap: 0.85rem;
  padding: 0.5rem 0;
  align-items: baseline;
}
.ledger-row + .ledger-row { border-top: 1px dashed var(--rule); }
.ledger-row .k { color: var(--fg-3); }
.ledger-row .v { color: var(--fg); overflow-wrap: anywhere; }
.ledger-row .s { font-size: 0.7rem; padding: 2px 7px; border-radius: 3px; }
.s-ok    { background: color-mix(in srgb, var(--signal-ok) 18%, transparent); color: var(--signal-ok); }
.s-stop  { background: color-mix(in srgb, var(--signal-stop) 18%, transparent); color: var(--signal-stop); }
.s-warn  { background: color-mix(in srgb, var(--signal-warn) 22%, transparent); color: var(--signal-warn); }

.ledger-foot {
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--rule);
  display: flex; justify-content: space-between;
  color: var(--fg-3);
  font-size: 0.7rem;
}
.ledger-foot .verify { color: var(--invariant); }

/* =============================================================
   Section heading block
   ============================================================= */
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 18ch) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 5rem);
  margin-bottom: clamp(2.5rem, 4vw, 3.5rem);
  align-items: start;
}
.section-head .eyebrow { padding-top: 0.6rem; border-top: 1px solid var(--fg); width: max-content; }
.section-head h2 { max-width: 22ch; }
.section-head .lede { margin-top: 1rem; }

/* =============================================================
   Problem section — grid of failure modes
   ============================================================= */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1px;
  background: var(--rule-strong);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  overflow: hidden;
}
.problem-cell {
  background: var(--bg);
  padding: 1.75rem 1.5rem;
}
.problem-cell .num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--fg-3);
}
.problem-cell h3 {
  margin-top: 0.65rem;
  margin-bottom: 0.65rem;
  font-size: 1.125rem;
  font-family: var(--font-display);
  letter-spacing: -0.015em;
}
.problem-cell p {
  font-size: 0.9375rem;
  color: var(--fg-2);
  line-height: 1.55;
}

/* =============================================================
   Product feature columns
   ============================================================= */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem 2.5rem;
}
.feature {
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule-strong);
}
.feature .mark {
  display: flex; gap: 0.75rem; align-items: baseline;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 0.85rem;
}
.feature .mark .glyph {
  color: var(--accent);
  font-family: var(--font-display);
  font-style: normal;
  font-size: 1.25rem;
  line-height: 1;
}
.feature h3 {
  margin-bottom: 0.65rem;
  font-size: 1.25rem;
}
.feature p { font-size: 0.9375rem; line-height: 1.6; color: var(--fg-2); }
.feature ul {
  margin: 0.85rem 0 0;
  padding: 0;
  list-style: none;
}
.feature ul li {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-3);
  padding: 0.35rem 0;
  border-top: 1px dashed var(--rule);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
}
.feature ul li:first-child { border-top: none; }
.feature ul li .v {
  color: var(--invariant);
  text-align: right;
}

/* =============================================================
   Role model, auth, and console prototype
   ============================================================= */
.user-model {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  background: var(--rule-strong);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 2rem;
}
.user-model article {
  background: var(--surface);
  padding: 1.25rem;
}
.user-model span,
.flow-step span,
.panel-kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 0.75rem;
}
.user-model h3,
.flow-step h3 {
  font-size: 1.05rem;
  margin-bottom: 0.55rem;
}
.user-model p,
.flow-step p {
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--fg-2);
}

.flow-model {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}
.flow-step {
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.flow-step span { color: var(--accent); }

.auth-console-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.75fr);
  gap: 1.5rem;
  align-items: start;
}
.auth-panel {
  background:
    linear-gradient(180deg, rgba(174, 92, 45, 0.08), transparent 32%),
    var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 2.4vw, 2rem);
}
.auth-panel h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}
.auth-panel p {
  color: var(--fg-2);
  font-size: 0.9375rem;
  line-height: 1.6;
}
.auth-forms {
  display: grid;
  gap: 1rem;
  margin-top: 1.25rem;
}
.auth-forms form {
  display: grid;
  gap: 0.85rem;
  padding: 1rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--bg);
}
.auth-forms h4,
.console-card h4 {
  font-size: 0.95rem;
  margin: 0;
}
.form-field {
  display: grid;
  gap: 0.35rem;
  font-size: 0.8rem;
  color: var(--fg-3);
}
.form-field input,
.form-field select {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--rule-strong);
  border-radius: calc(var(--radius) - 4px);
  background: var(--surface);
  color: var(--fg);
  padding: 0.65rem 0.75rem;
}
.auth-note {
  font-size: 0.78rem !important;
  color: var(--fg-3) !important;
}

.console-shell {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  min-height: 640px;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.console-sidebar {
  background: color-mix(in oklab, var(--bg) 72%, var(--surface));
  border-right: 1px solid var(--rule);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.console-tenant {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1rem;
  margin-bottom: 0.75rem;
}
.console-tenant span,
.console-topbar span,
.metric span,
.metric small {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.console-tenant strong {
  display: block;
  margin: 0.35rem 0;
  font-size: 0.95rem;
}
.console-tenant small { color: var(--fg-3); }
.console-tab {
  min-height: 38px;
  text-align: left;
  padding: 0.55rem 0.65rem;
  border-radius: calc(var(--radius) - 4px);
  color: var(--fg-2);
  font-size: 0.875rem;
  cursor: pointer;
}
.console-tab:hover,
.console-tab.active {
  background: var(--surface);
  color: var(--fg);
  box-shadow: inset 0 0 0 1px var(--rule);
}
.console-tab.active {
  color: var(--accent);
}
.console-main {
  min-width: 0;
  display: grid;
  grid-template-rows: auto 1fr;
}
.console-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--rule);
}
.console-topbar strong {
  display: block;
  margin-top: 0.2rem;
}
.console-pane {
  padding: 1.25rem;
}
.console-pane[hidden] { display: none; }
.console-pane-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}
.console-pane-head h3 {
  font-size: 1.35rem;
  margin: 0;
}
.console-pane-head p {
  margin: 0;
  color: var(--fg-2);
  font-size: 0.9rem;
}
.console-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}
.console-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.console-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.console-card {
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 1rem;
  min-width: 0;
}
.console-card.wide { grid-column: 1 / -1; }
.metric strong {
  display: block;
  margin: 0.4rem 0;
  font-family: var(--font-display);
  font-size: 2rem;
  line-height: 1;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums lining-nums;
}
.status-chip {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 24px;
  border-radius: 999px;
  padding: 0.18rem 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--rule);
}
.status-ok { color: var(--invariant); background: rgba(31, 122, 140, 0.09); }
.status-info { color: var(--accent); background: rgba(174, 92, 45, 0.1); }
.status-warn { color: var(--warning); background: rgba(151, 89, 34, 0.12); }
.event-list,
.check-list,
.role-list {
  list-style: none;
  padding: 0;
  margin: 0.85rem 0 0;
  display: grid;
  gap: 0.7rem;
  color: var(--fg-2);
  font-size: 0.9rem;
}
.event-list li,
.check-list li {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}
.role-list li {
  display: grid;
  gap: 0.2rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px dashed var(--rule);
  color: var(--fg);
}
.role-list li:last-child { border-bottom: none; padding-bottom: 0; }
.role-list span {
  color: var(--fg-3);
  font-size: 0.82rem;
}
.definition-list {
  margin: 0.85rem 0 0;
  display: grid;
  gap: 0.65rem;
}
.definition-list div {
  display: grid;
  grid-template-columns: minmax(100px, 0.7fr) 1fr;
  gap: 1rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px dashed var(--rule);
}
.definition-list div:last-child { border-bottom: none; padding-bottom: 0; }
.definition-list dt {
  color: var(--fg-3);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.definition-list dd {
  margin: 0;
  color: var(--fg-2);
  font-size: 0.9rem;
}
.console-table {
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums lining-nums;
}
.console-table th {
  color: var(--fg-3);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-align: left;
  padding: 0.55rem 0.65rem;
  border-bottom: 1px solid var(--rule);
}
.console-table td {
  padding: 0.7rem 0.65rem;
  border-bottom: 1px solid var(--rule);
  color: var(--fg-2);
  vertical-align: middle;
}
.console-table tr:last-child td { border-bottom: none; }
.mini-flow {
  margin: 0.85rem 0 0;
  padding-left: 1.25rem;
  color: var(--fg-2);
  font-size: 0.9rem;
}
.mini-flow li { padding: 0.25rem 0; }

/* =============================================================
   Architecture / flow diagram
   ============================================================= */
.flow {
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  position: relative;
}
.flow svg { width: 100%; height: auto; display: block; }
.flow-caption {
  margin-top: 1.25rem;
  font-size: 0.875rem;
  color: var(--fg-3);
  max-width: 70ch;
}

.flow-legend {
  display: flex; flex-wrap: wrap; gap: 1.25rem;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fg-3);
}
.flow-legend span { display: inline-flex; align-items: center; gap: 0.5rem; }
.flow-legend i { width: 10px; height: 10px; border-radius: 2px; display: block; }

/* =============================================================
   Pilot timeline
   ============================================================= */
.timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  counter-reset: phase;
}
.phase {
  position: relative;
  padding: 1.5rem 1.25rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
}
.phase::before {
  counter-increment: phase;
  content: counter(phase, decimal-leading-zero);
  position: absolute; top: 1rem; right: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--fg-3);
  letter-spacing: 0.08em;
}
.phase .when {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.phase h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: -0.015em;
  margin-bottom: 0.6rem;
}
.phase p { font-size: 0.875rem; color: var(--fg-2); line-height: 1.55; }
.phase ul {
  margin: 0.65rem 0 0;
  padding-left: 1.1rem;
  font-size: 0.8125rem;
  color: var(--fg-3);
}
.phase ul li { padding: 0.2rem 0; }

/* =============================================================
   Readiness table — claims & evidence
   ============================================================= */
.table-scroll {
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.table-scroll:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}
.readiness {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.readiness thead th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg-3);
  padding: 0 1rem 0.85rem;
  border-bottom: 1px solid var(--fg);
}
.readiness tbody td {
  padding: 1rem;
  border-bottom: 1px solid var(--rule);
  color: var(--fg-2);
  vertical-align: top;
}
.readiness tbody tr:hover td { background: var(--surface); }
.readiness td:first-child {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--fg);
  letter-spacing: -0.01em;
  font-weight: 500;
  width: 26%;
}
.readiness td.pill { width: 1%; white-space: nowrap; }
.pill-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 3px 8px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid currentColor;
  background: transparent;
}
.pill-ok   { color: var(--signal-ok); }
.pill-warn { color: var(--signal-warn); }
.pill-stop { color: var(--signal-stop); }
.pill-info { color: var(--invariant); }

/* =============================================================
   Integration — code blocks
   ============================================================= */
.integration {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: start;
}
.integration ol {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 0;
}
.integration ol li {
  position: relative;
  padding: 1.25rem 0 1.25rem 3rem;
  border-bottom: 1px solid var(--rule);
}
.integration ol li:last-child { border-bottom: none; }
.integration ol li::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute; left: 0; top: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.06em;
}
.integration h3 {
  font-size: 1.05rem;
  font-family: var(--font-display);
  margin-bottom: 0.3rem;
}
.integration p { font-size: 0.9375rem; color: var(--fg-2); margin: 0; }

.codepanel {
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  position: sticky;
  top: 88px;
}
.codepanel-tabs {
  display: flex;
  border-bottom: 1px solid var(--rule);
  background: var(--surface-2);
}
.codepanel-tab {
  padding: 0.75rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fg-3);
  background: transparent;
  border: 0;
  border-right: 1px solid var(--rule);
  cursor: pointer;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.codepanel-tab:hover { color: var(--fg); }
.codepanel-tab.active {
  color: var(--fg);
  background: var(--surface);
  box-shadow: inset 0 -2px 0 var(--accent);
}
.codepanel pre {
  margin: 0;
  padding: 1.5rem;
  overflow-x: auto;
  color: var(--fg-2);
  line-height: 1.6;
  font-size: 0.8125rem;
  background: transparent;
}
.codepanel pre[hidden] { display: none; }
.codepanel .c   { color: var(--fg-3); font-style: italic; }
.codepanel .k   { color: var(--copper-deep); font-weight: 500; }
[data-theme="dark"] .codepanel .k { color: var(--accent); }
.codepanel .s   { color: var(--invariant); }
.codepanel .n   { color: var(--fg); }

/* =============================================================
   Commercial model — pricing tiers
   ============================================================= */
.tiers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}
.tier {
  padding: 1.75rem;
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
}
.tier.featured {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 5%, var(--surface));
  position: relative;
}
.tier.featured::after {
  content: "Founding";
  position: absolute; top: -10px; right: 1rem;
  background: var(--accent);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 3px 9px;
  letter-spacing: 0.1em;
  border-radius: 2px;
  text-transform: uppercase;
}
.tier .name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: -0.015em;
  color: var(--fg);
}
.tier .who {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fg-3);
  margin-top: 0.35rem;
}
.tier .price {
  margin-top: 1.5rem;
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--fg);
  letter-spacing: -0.02em;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}
.tier .price small {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fg-3);
  margin-top: 0.25rem;
  font-weight: 400;
}
.tier ul {
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.875rem;
  color: var(--fg-2);
}
.tier ul li {
  padding: 0.55rem 0;
  border-top: 1px solid var(--rule);
  display: flex; gap: 0.65rem;
}
.tier ul li::before {
  content: "—";
  color: var(--accent);
  flex-shrink: 0;
}

/* =============================================================
   Risk controls
   ============================================================= */
.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.control {
  padding: 1.5rem;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  background: var(--bg);
}
.control .kicker {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--invariant);
  margin-bottom: 0.75rem;
}
.control h3 {
  font-size: 1.0625rem;
  font-family: var(--font-display);
  letter-spacing: -0.015em;
  margin-bottom: 0.6rem;
}
.control p { font-size: 0.9rem; color: var(--fg-2); line-height: 1.55; }

/* =============================================================
   CTA / contact
   ============================================================= */
.cta {
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 5vw, 4rem);
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: clamp(2rem, 4vw, 4rem);
  align-items: start;
}
.cta h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); letter-spacing: -0.025em; max-width: 18ch; }
.cta .lede { margin-top: 1.25rem; }
.cta-actions { margin-top: 2rem; display: flex; gap: 0.75rem; flex-wrap: wrap; }

.cta-contact {
  border-left: 1px solid var(--rule);
  padding-left: clamp(1.5rem, 3vw, 2.5rem);
}
@media (max-width: 760px) {
  .cta-contact { border-left: 0; border-top: 1px solid var(--rule); padding-left: 0; padding-top: 1.5rem; }
}
.cta-contact dl {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
.cta-contact dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg-3);
  margin-bottom: 0.3rem;
}
.cta-contact dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  color: var(--fg);
}
.cta-contact dd a { border-bottom: 1px solid var(--accent); transition: color 0.2s var(--ease); }
.cta-contact dd a:hover { color: var(--accent); }

/* =============================================================
   Footer
   ============================================================= */
.site-footer {
  border-top: 1px solid var(--rule);
  padding-block: 3rem;
  font-size: 0.8125rem;
  color: var(--fg-3);
}
.site-footer .container {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 2.5rem;
  align-items: start;
}
.site-footer h4 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg-3);
  font-weight: 500;
  margin-bottom: 1rem;
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer ul li { padding: 0.25rem 0; }
.site-footer ul a:hover { color: var(--accent); }
.site-footer .colophon {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--fg-3);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem;
}

/* =============================================================
   Responsive
   ============================================================= */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .section-head { grid-template-columns: 1fr; gap: 1.5rem; }
  .user-model { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flow-model { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .auth-console-grid { grid-template-columns: 1fr; }
  .console-shell { grid-template-columns: 1fr; min-height: 0; }
  .console-sidebar {
    border-right: none;
    border-bottom: 1px solid var(--rule);
    flex-direction: row;
    overflow-x: auto;
    overscroll-behavior-x: contain;
  }
  .console-tenant {
    min-width: 210px;
    border-bottom: none;
    border-right: 1px solid var(--rule);
    padding-bottom: 0;
    padding-right: 1rem;
    margin-bottom: 0;
    margin-right: 0.35rem;
  }
  .console-tab { flex: 0 0 auto; min-width: max-content; }
  .integration { grid-template-columns: 1fr; }
  .cta { grid-template-columns: 1fr; }
  .codepanel { position: static; }
  .site-footer .container { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .nav { display: none; position: absolute; top: 64px; left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--rule); flex-direction: column; align-items: stretch; padding: 1.25rem var(--gutter) 1.5rem; gap: 0.25rem; }
  .nav a { padding: 0.6rem 0; font-size: 1rem; border-bottom: 1px solid var(--rule); }
  .nav a:last-of-type { border-bottom: none; }
  .nav.open { display: flex; }
  .nav-toggle { display: grid; place-items: center; width: 36px; height: 36px; background: transparent; border: 1px solid var(--rule-strong); border-radius: var(--radius); color: var(--fg-2); margin-left: auto; cursor: pointer; }
  .nav-toggle svg { width: 16px; height: 16px; }
  .hero h1 { font-size: clamp(2.25rem, 9vw, 3rem); }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; max-width: 100%; justify-content: center; white-space: normal; text-align: center; }
  .hero-meta { grid-template-columns: 1fr 1fr; }
  .user-model,
  .flow-model,
  .console-grid,
  .console-grid.two,
  .console-grid.three { grid-template-columns: 1fr; }
  .console-pane-head { display: block; }
  .console-topbar { align-items: flex-start; flex-direction: column; }
  .definition-list div { grid-template-columns: 1fr; gap: 0.25rem; }
  .console-card { overflow-x: auto; }
  .console-table { min-width: 580px; }
  .readiness { min-width: 640px; }
  .site-footer .container { grid-template-columns: 1fr; }
}