:root {
  --bg: #FFFFFF;
  --surface: #F1F5F9;
  --ink: #0F172A;
  --muted: #64748B;
  --line: #E2E8F0;
  --accent: #0E7490;
  --accent-hover: #155E75;
}

html, body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01", "cv11";
}

.font-mono {
  font-family: 'JetBrains Mono', 'IBM Plex Mono', ui-monospace, monospace;
  font-feature-settings: "calt", "ss01";
}

.eyebrow {
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--muted);
}

.eyebrow-accent {
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--accent);
}

.hairline { border-color: var(--line); }
.hairline-strong { border-color: var(--ink); }

.btn-primary {
  background: var(--ink);
  color: white;
  padding: 14px 28px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background 0.15s ease;
}
.btn-primary:hover { background: var(--accent); }

.btn-secondary {
  color: var(--ink);
  padding: 14px 28px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--line);
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
}
.btn-secondary:hover {
  border-color: var(--ink);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--accent);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 0.15s ease;
}
.link-arrow:hover {
  border-bottom-color: var(--accent);
}

.grid-cell {
  border: 1px solid var(--line);
  border-radius: 4px;
}

.numeric {
  font-feature-settings: "tnum", "lnum";
  font-variant-numeric: tabular-nums lining-nums;
}

.measure-mark {
  display: inline-block;
  width: 24px;
  height: 1px;
  background: var(--ink);
  vertical-align: middle;
  margin-right: 12px;
}