:root {
  --bg: #f6f1e8;
  --card: #fffdf8;
  --ink: #1c1917;
  --muted: #57534e;
  --line: #e7e0d4;
  --accent: #0f766e;
  --accent-2: #b45309;
  --hill: #0d9488;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
}

.wrap {
  width: min(42rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.kicker {
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 0.5rem;
}

h1 {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.75rem;
}

.lede {
  font-size: 1.15rem;
  color: var(--ink);
  margin: 0 0 1.5rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1.25rem 1.25rem 1.4rem;
  margin: 1.25rem 0;
}

.card h2 {
  font-family: var(--serif);
  font-size: 1.35rem;
  margin: 0 0 0.6rem;
}

label.spot {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-weight: 650;
  margin-bottom: 0.4rem;
}

#spot-val { font-variant-numeric: tabular-nums; color: var(--accent); }

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  height: 2rem;
}

.chips {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin: 1rem 0 0.25rem;
}

.chips button {
  font: inherit;
  font-weight: 650;
  border: 1.5px solid var(--ink);
  background: transparent;
  color: var(--ink);
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
  cursor: pointer;
}

.chips button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--bg);
}

.hill-wrap { margin: 1rem 0 0.5rem; }
canvas#hill {
  width: 100%;
  height: 220px;
  display: block;
}

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin: 0.75rem 0 1rem;
}

.stat {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.7rem 0.85rem;
}

.stat .lbl {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 700;
}

.stat .num {
  font-size: 1.6rem;
  font-weight: 750;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.delta-track {
  height: 8px;
  background: var(--line);
  border-radius: 99px;
  margin-top: 0.4rem;
  overflow: hidden;
}

#delta-bar {
  height: 100%;
  width: 50%;
  background: var(--accent);
  border-radius: 99px;
}

.copy p { margin: 0.55rem 0; color: var(--ink); }

.why li { margin: 0.4rem 0; }

.cta {
  display: inline-block;
  background: var(--accent);
  color: #fffdf8 !important;
  text-decoration: none;
  font-weight: 800;
  padding: 0.7rem 1.1rem;
  border-radius: 10px;
  margin-top: 0.5rem;
}

a { color: var(--accent); font-weight: 650; }

.fine {
  color: var(--muted);
  font-size: 0.9rem;
}

footer {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.88rem;
  color: var(--muted);
}

#stamp { font-variant-numeric: tabular-nums; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 520px) {
  .wrap { width: calc(100% - 1.5rem); padding-top: 1.25rem; }
  .stats { grid-template-columns: 1fr; }
}