* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #691a36;
  --secondary-color: #64748b;
  --bg-color: #ffffff;
  --surface-color: #f8fafc;
  --text-color: #111827;
  --font-family: Inter, sans-serif;
  --font-size: 14px;
  --page-padding: 32px;
  --section-gap: 24px;
  --block-gap: 12px;
  --border-radius: 8px;
}

body {
  font-family: var(--font-family, sans-serif);
  font-size: var(--font-size, 14px);
  color: var(--text-color, #111827);
  background-color: var(--bg-color, #ffffff);
  padding: var(--page-padding, 32px);
  line-height: 1.5;
}

main {
  max-width: 1200px;
  margin: 0 auto;
}

section {
  margin-bottom: var(--section-gap, 24px);
}

.block {
  margin-bottom: var(--block-gap, 12px);
}

.hero {
  margin-bottom: 2rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--block-gap, 12px);
}

.single-column {
  display: flex;
  flex-direction: column;
}

.metric {
  background: var(--surface-color, #f8fafc);
  padding: 1.5rem;
  border-radius: var(--border-radius, 8px);
  border: 1px solid #e5e7eb;
}

.metric .label {
  display: block;
  font-size: 0.875rem;
  color: var(--secondary-color, #64748b);
  margin-bottom: 0.5rem;
}

.metric .value {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color, #2563eb);
}

.chart {
  background: var(--surface-color, #f8fafc);
  padding: 1.5rem;
  border-radius: var(--border-radius, 8px);
  border: 1px solid #e5e7eb;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary-color, #64748b);
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-color, #111827);
  margin-bottom: 0.5rem;
}

nav {
  margin-bottom: 2rem;
  padding: 1rem;
  background: var(--surface-color, #f8fafc);
  border-radius: var(--border-radius, 8px);
}

nav a {
  color: var(--primary-color, #2563eb);
  text-decoration: none;
  margin-right: 1rem;
}

nav a:hover {
  text-decoration: underline;
}