:root {
  --ink: #111827;
  --paper: #f7f7f2;
  --muted: #5f6b7a;
  --line: #d8d8cd;
  --panel: #ffffff;
  --green: #1d7f64;
  --blue: #234f9b;
  --red: #b84545;
  --gold: #b6832d;
  --charcoal: #1d2530;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  letter-spacing: 0;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 0 44px;
  border-bottom: 1px solid rgba(17, 24, 39, 0.12);
  background: rgba(247, 247, 242, 0.92);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 6px;
}

nav {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
}

nav a:hover,
nav a:focus {
  color: var(--ink);
}

.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.9fr);
  align-items: center;
  gap: 56px;
  padding: 72px 44px 64px;
}

.hero-copy,
.section-heading,
.split > div,
.cta {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(56px, 8vw, 120px);
  line-height: 0.9;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(32px, 5vw, 64px);
  line-height: 1;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
}

.lead {
  max-width: 650px;
  color: var(--charcoal);
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.12;
}

.support,
.split p,
.cta p,
article p,
.timeline p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 6px;
  border: 1px solid var(--ink);
  font-weight: 800;
}

.button.primary {
  background: var(--ink);
  color: var(--paper);
}

.button.secondary {
  background: transparent;
}

.execution-board {
  border: 1px solid rgba(17, 24, 39, 0.18);
  background: #fbfbf7;
  box-shadow: 0 24px 70px rgba(17, 24, 39, 0.16);
}

.board-header,
.audit-strip {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.board-header strong {
  color: var(--green);
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--line);
}

.signal-grid div {
  min-height: 130px;
  padding: 20px;
  border-right: 1px solid var(--line);
}

.signal-grid div:last-child {
  border-right: 0;
}

.signal-grid span,
.audit-strip span,
.path-list span,
.timeline span,
.number {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.signal-grid strong {
  display: block;
  margin: 18px 0 8px;
  font-size: 18px;
}

.signal-grid small {
  color: var(--muted);
}

.path-list {
  margin: 0;
  padding: 18px 20px;
  list-style: none;
}

.path-list li {
  display: grid;
  grid-template-columns: 42px 1fr;
  padding: 13px 0;
  border-bottom: 1px solid rgba(17, 24, 39, 0.09);
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
}

.path-list li:last-child {
  border-bottom: 0;
}

.audit-strip {
  border-top: 1px solid var(--line);
  border-bottom: 0;
}

.audit-strip code {
  color: var(--blue);
}

.band,
.split,
.cta {
  padding: 96px 44px;
  border-top: 1px solid rgba(17, 24, 39, 0.12);
}

.three-col,
.studio-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 42px;
  background: var(--line);
  border: 1px solid var(--line);
}

article,
.feature-list > div,
.timeline li {
  background: var(--panel);
  padding: 28px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.8fr);
  gap: 56px;
  align-items: start;
}

.code-panel {
  margin-top: 28px;
  background: #101722;
  color: #e8edf5;
  border-radius: 8px;
  overflow: auto;
}

pre {
  margin: 0;
  padding: 24px;
  font-size: 14px;
  line-height: 1.7;
}

.feature-list {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.studio {
  background: #eef2f0;
}

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

.roadmap {
  background: #f4f0e7;
}

.timeline {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
  list-style: none;
}

.timeline strong {
  display: block;
  margin: 12px 0 8px;
  font-size: 22px;
}

.cta {
  max-width: none;
  text-align: center;
  background: var(--charcoal);
  color: var(--paper);
}

.cta p {
  max-width: 720px;
  margin: 0 auto 26px;
  color: #c9d0db;
}

.cta .eyebrow {
  color: #93b7ff;
}

.cta .button.primary {
  border-color: var(--paper);
  background: var(--paper);
  color: var(--ink);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 44px;
  background: var(--charcoal);
  color: #c9d0db;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding: 18px 22px;
  }

  nav {
    flex-wrap: wrap;
  }

  .hero,
  .split {
    grid-template-columns: 1fr;
    padding-left: 22px;
    padding-right: 22px;
  }

  .band,
  .cta {
    padding-left: 22px;
    padding-right: 22px;
  }

  .signal-grid,
  .three-col,
  .studio-grid {
    grid-template-columns: 1fr;
  }

  .signal-grid div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .signal-grid div:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 620px) {
  .hero {
    min-height: auto;
    padding-top: 48px;
  }

  h1 {
    font-size: 56px;
  }

  h2 {
    font-size: 34px;
  }

  .execution-board {
    margin-left: -8px;
    margin-right: -8px;
  }

  footer {
    flex-direction: column;
    padding-left: 22px;
    padding-right: 22px;
  }
}