/* ClickHouse-inspired design: near-pure black canvas + electric yellow voltage.
 * Tokens from DESIGN.md. Inter 700 for display, JetBrains Mono for code. */

:root {
  color-scheme: dark;

  --primary: #faff69;
  --primary-active: #e6eb52;
  --primary-disabled: #3a3a1f;
  --on-primary: #0a0a0a;

  --canvas: #0a0a0a;
  --surface-soft: #121212;
  --surface-card: #1a1a1a;
  --surface-elevated: #242424;

  --hairline: #2a2a2a;
  --hairline-strong: #3a3a3a;

  --ink: #ffffff;
  --body: #cccccc;
  --body-strong: #e6e6e6;
  --muted: #888888;
  --muted-soft: #5a5a5a;

  --emerald: #22c55e;
  --rose: #ef4444;
  --blue: #3b82f6;
  --warning: #f59e0b;

  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-pill: 9999px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: 0;
  color: var(--body);
  background: var(--canvas);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--primary); }

h1, h2, h3, h4, p { margin-top: 0; color: var(--ink); }

h1 {
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(40px, 6.4vw, 72px);
  line-height: 1.05;
  letter-spacing: -2.5px;
}

h1 em {
  font-style: italic;
  color: var(--primary);
  font-weight: 700;
}

h2 {
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(28px, 4.2vw, 40px);
  line-height: 1.15;
  letter-spacing: -1.5px;
}

h3 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.4;
  letter-spacing: 0;
  margin-bottom: 8px;
}

p { line-height: 1.55; }

code, pre {
  font-family: var(--mono);
  font-size: 0.92em;
}

code {
  background: var(--surface-card);
  color: var(--primary);
  padding: 2px 7px;
  border-radius: var(--r-sm);
  border: 1px solid var(--hairline);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-size: 12px;
  font-weight: 600;
}

/* ─── Top nav ───────────────────────────────────── */
.topnav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid var(--hairline);
}

.topnav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 14px 24px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 28px;
  align-items: center;
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: var(--r-md);
  background: var(--primary);
  color: var(--on-primary);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0;
}

.brand strong { display: block; font-size: 14px; line-height: 1.2; color: var(--ink); font-weight: 600; }
.brand small  { color: var(--muted); font-size: 12px; }

.topnav nav {
  display: flex;
  gap: 26px;
  justify-content: center;
  font-size: 14px;
  font-weight: 500;
  color: var(--body);
}
.topnav nav a:hover { color: var(--primary); }

.cta {
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding: 0 20px;
  background: var(--primary);
  color: var(--on-primary);
  border-radius: var(--r-md);
  font-weight: 600;
  font-size: 14px;
}
.cta:hover { background: var(--primary-active); color: var(--on-primary); }

/* ─── Hero ──────────────────────────────────────── */
.hero {
  background: var(--canvas);
  padding: 96px 24px 80px;
  border-bottom: 1px solid var(--hairline);
}

.hero-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) 380px;
  gap: 64px;
  align-items: center;
}

.hero-copy .lead {
  font-size: 18px;
  line-height: 1.55;
  color: var(--body);
  max-width: 660px;
  margin-bottom: 32px;
}

.actions { display: flex; gap: 12px; flex-wrap: wrap; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 12px 20px;
  border-radius: var(--r-md);
  background: var(--surface-card);
  color: var(--ink);
  border: 1px solid var(--hairline);
  font-family: inherit;
  font-weight: 600;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
}
.button:hover { border-color: var(--primary); color: var(--primary); }
.button.primary { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }
.button.primary:hover { background: var(--primary-active); border-color: var(--primary-active); color: var(--on-primary); }

.hero-metrics {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 28px;
  display: grid;
  gap: 20px;
}

.hero-metrics article {
  padding-bottom: 20px;
  border-bottom: 1px solid var(--hairline);
}
.hero-metrics article:last-child { border-bottom: 0; padding-bottom: 0; }

.hero-metrics span { display: block; color: var(--muted); font-size: 13px; font-weight: 500; letter-spacing: 0; }
.hero-metrics strong {
  display: block;
  margin: 6px 0 2px;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 48px;
  line-height: 1.0;
  letter-spacing: -1.5px;
  color: var(--primary);
}
.hero-metrics strong i {
  font-style: normal;
  font-size: 0.45em;
  color: var(--muted);
  font-weight: 600;
  margin-left: 2px;
}
.hero-metrics small { color: var(--muted); font-size: 12px; }

/* ─── Section base ──────────────────────────────── */
.section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 96px 24px;
  position: relative;
}

.section.alt-bg {
  max-width: none;
  margin: 0;
  background: var(--surface-soft);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}
.section.alt-bg > .section-head,
.section.alt-bg > div,
.section.alt-bg > ol,
.section.alt-bg > p {
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
}

.section-head { max-width: 820px; margin-bottom: 40px; }
.section-head .section-sub {
  color: var(--body);
  font-size: 16px;
  line-height: 1.55;
  margin-top: 8px;
}

.section-foot {
  color: var(--muted);
  font-size: 14px;
  margin-top: 28px;
  max-width: 880px;
}

/* ─── Prose ─────────────────────────────────────── */
.prose p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--body-strong);
}
.prose p em { font-style: italic; color: var(--primary); }
.prose p strong { color: var(--ink); font-weight: 600; }
.prose.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }

/* ─── Grids ─────────────────────────────────────── */
.grid { display: grid; gap: 20px; }
.grid.two   { grid-template-columns: 1fr 1fr; }
.grid.three { grid-template-columns: repeat(3, 1fr); }

.card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 32px;
}
.card p { color: var(--body); margin: 0; line-height: 1.55; font-size: 15px; }

/* ─── Voices ────────────────────────────────────── */
.voices {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.voice {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  border-top: 3px solid var(--primary);
}

.voice.bod     { border-top-color: var(--primary); }
.voice.finance { border-top-color: var(--emerald); }
.voice.ops     { border-top-color: var(--warning); }

.voice-head { display: flex; align-items: center; gap: 12px; }
.voice-head h3 { margin: 0; font-size: 16px; font-weight: 600; }

.badge {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 4px 12px;
  border-radius: var(--r-pill);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  background: var(--surface-card);
  color: var(--ink);
  border: 1px solid var(--hairline);
}

.badge.blue  { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }
.badge.green { color: var(--emerald); border-color: var(--emerald); }
.badge.amber { color: var(--warning); border-color: var(--warning); }
.badge.red   { color: var(--rose);    border-color: var(--rose); }

blockquote {
  margin: 0;
  padding: 16px 0 16px 18px;
  border-left: 2px solid var(--primary);
  color: var(--body-strong);
  font-size: 16px;
  line-height: 1.55;
  font-style: italic;
}
blockquote em { font-style: italic; color: var(--primary); }

.voice-pains {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
  color: var(--body);
  font-size: 14px;
}
.voice-pains li {
  padding-left: 22px;
  position: relative;
  line-height: 1.5;
}
.voice-pains li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
}
.voice.finance .voice-pains li::before { background: var(--emerald); }
.voice.ops     .voice-pains li::before { background: var(--warning); }

.voice-tools {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--hairline);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}
.voice-tools strong { color: var(--ink); font-weight: 600; }

/* ─── Evidence ──────────────────────────────────── */
.evidence {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.evidence header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.evidence p { color: var(--body); margin: 0; font-size: 14px; }

.bar-stack {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 16px 0;
}

.bar-fill {
  grid-column: 1 / -1;
  height: 20px;
  border-radius: var(--r-sm);
  background: linear-gradient(90deg, var(--rose) var(--w), var(--emerald) var(--w));
}

.bar-label { grid-column: 1; margin-top: -2px; }
.bar-label.right { grid-column: 2; text-align: right; }
.bar-label strong {
  display: block;
  font-family: var(--mono);
  font-size: 14px;
  color: var(--ink);
}
.bar-label small { color: var(--muted); font-size: 12px; }

.thin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  color: var(--body);
}
.thin-table th,
.thin-table td {
  text-align: left;
  padding: 10px 6px;
  border-bottom: 1px solid var(--hairline);
}
.thin-table th {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 600;
}
.thin-table td { color: var(--body-strong); }
.thin-table td:last-child { text-align: right; font-family: var(--mono); color: var(--primary); }

.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip-row span {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  font-family: var(--mono);
  font-size: 12px;
  background: var(--surface-elevated);
  border: 1px solid var(--hairline);
  border-radius: var(--r-sm);
  color: var(--body-strong);
}

/* ─── Mermaid diagram ───────────────────────────── */
.diagram {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 24px;
  overflow-x: auto;
  margin-bottom: 28px;
}
.mermaid { min-width: 900px; }

/* ─── Phase table ───────────────────────────────── */
.phase-table {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.phase-table table { width: 100%; border-collapse: collapse; font-size: 14px; color: var(--body); }
.phase-table th, .phase-table td {
  text-align: left;
  padding: 14px;
  border-bottom: 1px solid var(--hairline);
  vertical-align: top;
}
.phase-table th {
  background: var(--surface-elevated);
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 600;
}
.phase-table td:first-child {
  width: 36px;
  font-family: var(--mono);
  font-weight: 700;
  color: var(--primary);
}
.phase-table td strong { color: var(--ink); }

/* ─── Module grid ───────────────────────────────── */
.module-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.module-grid article {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 32px;
}

.module-grid article span {
  display: inline-block;
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0;
}
.module-grid article p { color: var(--body); margin: 0; font-size: 14px; line-height: 1.55; }

/* ─── Scenario ──────────────────────────────────── */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.scenario {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.scenario header { display: flex; align-items: center; gap: 12px; }
.scenario header h3 { margin: 0; font-size: 16px; }
.scenario p { color: var(--body); font-size: 14px; margin: 0; line-height: 1.55; }
.scenario p strong { color: var(--ink); font-weight: 600; }
.scenario p em { font-style: italic; color: var(--primary); }

/* ─── Role matrix ───────────────────────────────── */
.role-matrix {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.role-matrix table { width: 100%; border-collapse: collapse; font-size: 14px; color: var(--body); }
.role-matrix th, .role-matrix td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--hairline);
  text-align: left;
}
.role-matrix th {
  background: var(--surface-elevated);
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 600;
}
.role-matrix th:not(:first-child),
.role-matrix td:not(:first-child) {
  text-align: center;
  width: 100px;
}
.role-matrix td strong { color: var(--primary); }

/* ─── Dashboard previews ────────────────────────── */
.dashpreview {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.dashpreview svg {
  width: 100%;
  height: auto;
  background: var(--surface-elevated);
  border-radius: var(--r-md);
  padding: 10px;
}
.dashpreview svg rect[fill="#eaf0fa"] { fill: var(--surface-elevated); }
.dashpreview svg rect[fill="#e8f4ee"] { fill: var(--surface-elevated); }
.dashpreview svg rect[fill="#fdf4e1"] { fill: var(--surface-elevated); }
.dashpreview svg rect[fill="#fff"] { fill: var(--surface-card); }
.dashpreview svg rect[fill="#1f4dc0"] { fill: var(--primary); }
.dashpreview svg rect[fill="#fbeceb"] { fill: rgba(239, 68, 68, 0.2); stroke: var(--rose); }
.dashpreview svg [stroke="#1f4dc0"] { stroke: var(--primary); }
.dashpreview svg [stroke="#1f7a52"] { stroke: var(--emerald); }
.dashpreview svg [stroke="#a35e00"] { stroke: var(--warning); }
.dashpreview svg [stroke="#d9e0ea"] { stroke: var(--hairline); }
.dashpreview svg [stroke="#b42318"] { stroke: var(--rose); }
.dashpreview ul {
  margin: 0;
  padding-left: 18px;
  color: var(--body);
  font-size: 14px;
  line-height: 1.55;
}

/* ─── Alert groups ──────────────────────────────── */
.alert-group {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 32px;
}
.alert-group h3 { margin-bottom: 14px; font-size: 16px; }
.alert-group ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}
.alert-group li {
  padding: 12px 14px;
  background: var(--surface-elevated);
  border: 1px solid var(--hairline);
  border-radius: var(--r-sm);
  font-size: 14px;
  color: var(--body-strong);
}

/* ─── PT split ──────────────────────────────────── */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) 380px;
  gap: 40px;
  align-items: start;
}
.split p { color: var(--body-strong); font-size: 16px; line-height: 1.55; }
.split p strong { color: var(--ink); font-weight: 600; }

.checklist {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.checklist li {
  padding-left: 26px;
  position: relative;
  color: var(--body);
  line-height: 1.5;
}
.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--primary);
  font-weight: 700;
}

.callout {
  background: var(--primary);
  color: var(--on-primary);
  border-radius: var(--r-lg);
  padding: 32px;
}
.callout h3 { color: var(--on-primary); margin-bottom: 12px; font-weight: 700; }
.callout p { color: var(--on-primary); font-size: 15px; line-height: 1.55; margin: 0; }
.callout p em { font-style: italic; color: var(--on-primary); font-weight: 600; }

/* ─── Roadmap ───────────────────────────────────── */
.roadmap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.roadmap article {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.roadmap header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.roadmap header span {
  background: var(--primary);
  color: var(--on-primary);
  font-family: var(--mono);
  font-size: 12px;
  padding: 4px 10px;
  border-radius: var(--r-sm);
  font-weight: 700;
}
.roadmap header h3 { margin: 0; font-size: 16px; }
.roadmap p { color: var(--body); font-size: 14px; margin: 0; line-height: 1.55; }
.roadmap .meta { color: var(--muted); font-size: 13px; }
.roadmap .meta strong { color: var(--primary); }

/* ─── Acceptance ────────────────────────────────── */
.acceptance {
  counter-reset: ac;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.acceptance li {
  counter-increment: ac;
  padding: 20px 22px 20px 64px;
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  position: relative;
  line-height: 1.55;
  color: var(--body);
  font-size: 14px;
}
.acceptance li::before {
  content: counter(ac, decimal-leading-zero);
  position: absolute;
  left: 22px;
  top: 20px;
  font-family: var(--mono);
  font-weight: 700;
  color: var(--primary);
  font-size: 14px;
}
.acceptance strong { color: var(--ink); }

/* ─── Decisions ─────────────────────────────────── */
.decisions {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.decisions article {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 32px;
}
.decisions h3 { margin-bottom: 6px; font-size: 16px; }
.decisions .owner {
  display: inline-block;
  font-size: 12px;
  color: var(--primary);
  margin-bottom: 16px;
  font-style: italic;
}
.decisions ol {
  margin: 0;
  padding-left: 20px;
  color: var(--body);
  font-size: 14px;
  line-height: 1.55;
}
.decisions ol li { padding-left: 6px; margin-bottom: 10px; }

/* ─── Footer ────────────────────────────────────── */
.site-footer {
  background: var(--canvas);
  color: var(--muted);
  padding: 64px 24px;
  margin-top: 0;
  border-top: 1px solid var(--hairline);
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
}
.site-footer strong { color: var(--ink); display: block; margin-bottom: 8px; font-weight: 600; }
.site-footer p { margin: 4px 0; font-size: 14px; line-height: 1.55; }
.site-footer a { color: var(--primary); }
.site-footer a:hover { color: var(--primary-active); }

/* ─── Responsive ────────────────────────────────── */
@media (max-width: 1024px) {
  .topnav nav { gap: 18px; }
  .roadmap { grid-template-columns: repeat(2, 1fr); }
  .voices,
  .module-grid,
  .scenario-grid,
  .grid.three { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .topnav-inner { grid-template-columns: auto auto; }
  .topnav nav { display: none; }
  h1 { font-size: 40px; letter-spacing: -1.5px; }
  h2 { font-size: 28px; letter-spacing: -1px; }
  .hero { padding: 56px 20px 48px; }
  .hero-metrics strong { font-size: 36px; letter-spacing: -1px; }
  .hero-inner,
  .prose.two-col,
  .grid.two,
  .grid.three,
  .voices,
  .module-grid,
  .scenario-grid,
  .split,
  .roadmap,
  .acceptance,
  .decisions,
  .footer-inner {
    grid-template-columns: 1fr;
  }
  .section { padding: 64px 20px; }
  .role-matrix th:not(:first-child),
  .role-matrix td:not(:first-child) { width: auto; }
}