:root {
  --vellum: #F4ECD7;
  --vellum-soft: #EFE5C9;
  --ink: #0A1628;
  --ink-soft: #3F4C5E;
  --ink-faint: #97A0AC;
  --blueprint: #1E5FA8;
  --blueprint-hover: #174E8B;
  --copper: #B87333;
  --rule: #D6CDB4;
  --code-bg: #0A1628;
  --code-text: #E5DFCB;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--vellum);
  color: var(--ink);
  font-family: 'Inter', -apple-system, system-ui, sans-serif;
  line-height: 1.5;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

.page-wrap { max-width: 1040px; margin: 0 auto; padding: 28px 40px; }

/* NAV */
.nav { display: flex; justify-content: space-between; align-items: center; padding-bottom: 100px; }
.nav-mark {
  display: flex; align-items: center; gap: 10px;
  font-family: 'Source Serif 4', Georgia, serif; font-size: 18px; font-weight: 500;
  color: var(--ink); text-decoration: none;
}
.nav-mark .k { width: 22px; height: 22px; color: var(--ink); }
.nav-mark .cad { color: var(--blueprint); }
.nav-links { display: flex; gap: 24px; font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 12px; color: var(--ink-soft); letter-spacing: 0.04em; }
.nav-links a { color: var(--ink-soft); text-decoration: none; }
.nav-links a:hover { color: var(--blueprint); }
.nav-links a.app-link { color: var(--blueprint); font-weight: 500; }

/* HERO */
.hero { text-align: center; padding: 0 0 72px; }
.headline {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 96px; font-weight: 500; letter-spacing: -0.03em;
  line-height: 0.95; margin: 0 0 28px;
}
.headline .accent { color: var(--blueprint); font-style: italic; }
.subhead { font-size: 20px; color: var(--ink-soft); max-width: 560px; margin: 0 auto 16px; line-height: 1.5; }

.modes {
  font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 12px;
  color: var(--ink-faint); letter-spacing: 0.06em;
  margin: 0 auto 40px; display: inline-flex; gap: 14px;
}
.modes .mode { color: var(--ink-soft); }
.modes .sep { opacity: 0.5; }

.ctas-primary { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 14px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 22px; border-radius: 8px;
  font-size: 15px; font-weight: 500; font-family: inherit;
  text-decoration: none; border: 1px solid; cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.btn-primary { background: var(--blueprint); color: #FFF; border-color: var(--blueprint); font-size: 16px; padding: 14px 24px; }
.btn-primary:hover { background: var(--blueprint-hover); border-color: var(--blueprint-hover); }
.btn-secondary { background: transparent; color: var(--ink); border-color: var(--rule); }
.btn-secondary:hover { border-color: var(--ink); }

.ctas-tertiary {
  display: flex; gap: 18px; justify-content: center; align-items: center;
  font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 12px;
  color: var(--ink-soft); letter-spacing: 0.04em;
  margin-bottom: 24px;
}
.ctas-tertiary a { color: var(--ink-soft); text-decoration: none; }
.ctas-tertiary a:hover { color: var(--blueprint); }
.ctas-tertiary .sep { opacity: 0.4; }

.install {
  display: inline-flex; align-items: center; gap: 16px;
  background: var(--code-bg); color: var(--code-text);
  padding: 10px 16px; border-radius: 8px;
  font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 13px;
  border: none; cursor: pointer;
}
.install:hover { background: #0F1E33; }
.install .prompt { color: var(--copper); }
.install .copy { color: var(--ink-faint); font-size: 11px; padding-left: 8px; border-left: 1px solid #1F2A3D; }

/* DEMO */
.demo-block { margin: 0 -20px 100px; }
.demo-frame {
  aspect-ratio: 16/9;
  background: linear-gradient(180deg, #06101F 0%, #0A1628 100%);
  border-radius: 14px; position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 30px 80px -30px rgba(10,22,40,0.30);
  margin-top: 10px;
}
.demo-frame video { width: 100%; height: 100%; object-fit: contain; }
.demo-meta {
  display: flex; justify-content: space-between; align-items: center;
  font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 11px;
  color: var(--ink-soft); letter-spacing: 0.04em;
  padding: 0 20px;
}
.demo-meta .dot { display: inline-block; width: 6px; height: 6px; background: var(--blueprint); border-radius: 50%; margin-right: 8px; vertical-align: middle; }

/* CODE */
.code-block { margin: 0 0 100px; max-width: 720px; margin-left: auto; margin-right: auto; }
.code-label {
  font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 11px; color: var(--ink-soft);
  letter-spacing: 0.06em; margin-bottom: 14px; text-transform: uppercase;
  display: flex; align-items: center; gap: 10px;
}
.code-label::before { content: ''; width: 14px; height: 1px; background: var(--rule); }
.code {
  background: var(--code-bg); color: var(--code-text);
  padding: 26px 32px; border-radius: 10px;
  font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 13px; line-height: 1.7;
  white-space: pre-wrap; margin: 0; overflow-x: auto;
}
.code .kw  { color: #B5763B; }
.code .fn  { color: #6FA8D6; }
.code .num { color: #C2D6EE; }
.code .com { color: #5C6677; }
.code .str { color: #D6BC7A; }

/* FOOTER */
.footer {
  display: flex; justify-content: space-between; align-items: center;
  border-top: 1px solid var(--rule); padding: 28px 0; margin-top: 60px;
  font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 11px;
  color: var(--ink-soft); letter-spacing: 0.04em;
}
.footer-links { display: flex; gap: 22px; }
.footer-links a { color: var(--ink-soft); text-decoration: none; }
.footer-links a:hover { color: var(--blueprint); }

/* MOBILE */
@media (max-width: 768px) {
  .page-wrap { padding: 20px 20px; }
  .nav { padding-bottom: 60px; flex-wrap: wrap; gap: 12px; }
  .nav-links { font-size: 11px; gap: 14px; }
  .headline { font-size: 56px; }
  .subhead { font-size: 17px; }
  .demo-block { margin: 0 0 60px; }
  .code { font-size: 12px; padding: 20px; }
  .footer { flex-direction: column; gap: 12px; }
}