:root {
  --bg: #ece7da;
  --paper: #f6f2e8;
  --ink: #1b1c1a;
  --muted: #5f6058;
  --faint: #8b8c82;
  --line: rgba(27, 28, 26, 0.14);
  --line-soft: rgba(27, 28, 26, 0.08);
  --accent: #b07d12;
  --green: #1f7a52;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --serif: ui-serif, "Iowan Old Style", "Charter", Georgia, serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  background:
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px) 0 0 / 56px 56px,
    linear-gradient(var(--line-soft) 1px, transparent 1px) 0 0 / 56px 56px,
    var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  margin: 0;
  min-height: 100%;
}

button,
input {
  font: inherit;
}

::selection {
  background: rgba(176, 125, 18, 0.22);
}

.page {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
  margin: 0 auto;
  max-width: 1180px;
  padding: clamp(1.75rem, 5vw, 4rem) clamp(1.1rem, 4vw, 3rem) clamp(2.5rem, 6vw, 5rem);
}

/* ---- masthead ---- */
.masthead {
  align-items: end;
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: clamp(1rem, 3vw, 2.5rem) clamp(2rem, 5vw, 4rem);
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  padding-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

.eyebrow {
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  grid-column: 1 / -1;
  letter-spacing: 0.18em;
  margin: 0;
  text-transform: uppercase;
}

h1 {
  font-family: var(--serif);
  font-size: clamp(2.2rem, 5.5vw, 4.1rem);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.02;
  margin: 0;
  max-width: 16ch;
  text-wrap: balance;
}

h1 span {
  color: var(--muted);
}

.lede {
  color: var(--muted);
  font-size: clamp(0.98rem, 1.3vw, 1.08rem);
  line-height: 1.6;
  margin: 0;
  max-width: 46ch;
  padding-bottom: 0.2rem;
}

.facts {
  border-top: 1px solid var(--line);
  display: grid;
  gap: 0;
  grid-column: 1 / -1;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0.25rem 0 0;
}

.facts div {
  min-width: 0;
  padding: 0.85rem 1rem 0 0;
}

.facts dt {
  color: var(--faint);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.facts dd {
  font-size: 0.95rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  margin: 0.32rem 0 0;
}

/* ---- demo stage (focal point) ---- */
.demo-stage {
  margin: 0 auto;
  max-width: 720px;
  width: 100%;
}

.demo-stage lit-counter {
  display: block;
}

/* ---- notes ---- */
.notes {
  border-top: 1px solid var(--line);
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding-top: clamp(1.5rem, 4vw, 2.5rem);
}

.notes article {
  min-width: 0;
}

.notes h2 {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  margin: 0 0 0.7rem;
  text-transform: uppercase;
}

.notes p {
  color: var(--muted);
  line-height: 1.65;
  margin: 0;
  max-width: 60ch;
}

.notes em {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.92em;
  font-style: normal;
}

@media (max-width: 760px) {
  .masthead {
    grid-template-columns: 1fr;
  }

  .lede {
    max-width: 52ch;
  }

  .notes {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .facts {
    grid-template-columns: 1fr;
  }

  .facts div {
    border-bottom: 1px solid var(--line-soft);
    padding: 0.7rem 0;
  }
}