:root {
  --primary-color: #0366d6;
  --text-color: #24292e;
  --bg-color: #ffffff;
  --code-bg: #f6f8fa;
  --border-color: #e1e4e8;
  --success-color: #28a745;
  --warning-color: #ffc107;
}

* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background: var(--bg-color);
  margin: 0;
  padding: 0;
}

.wrapper {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 2rem;
}

.site-header {
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
}

.site-header h1 {
  margin: 0;
  display: inline-block;
}

.site-header a {
  text-decoration: none;
  color: var(--text-color);
}

.site-header nav {
  float: right;
  margin-top: 0.5rem;
}

.site-header nav a {
  margin-left: 1rem;
  color: var(--primary-color);
}

.page-content {
  min-height: 70vh;
  padding: 2rem 0;
}

.formula-page {
  max-width: 100%;
}

.formula-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1rem;
  margin-bottom: 2rem;
}

.formula-meta {
  display: flex;
  gap: 1rem;
  margin-top: 0.5rem;
  font-size: 0.9rem;
  flex-wrap: wrap;
}

.version {
  background: var(--success-color);
  color: white;
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
}

.license {
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
}

.code-block {
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 1rem;
  margin: 1rem 0;
  overflow-x: auto;
}

.code-block pre {
  margin: 0;
}

.dep-list {
  list-style: none;
  padding: 0;
}

.dep-list li {
  padding: 0.5rem;
  border-left: 3px solid var(--primary-color);
  margin: 0.5rem 0;
  background: var(--code-bg);
}

.formula-details {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}

.formula-details th,
.formula-details td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.formula-details th {
  background: var(--code-bg);
  font-weight: 600;
  width: 25%;
}

.site-footer {
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  text-align: center;
  color: #586069;
  font-size: 0.875rem;
}

@media (max-width: 768px) {
  .wrapper {
    padding: 0 1rem;
  }

  .site-header nav {
    float: none;
    margin-top: 1rem;
  }

  .formula-meta {
    flex-direction: column;
    gap: 0.5rem;
  }

  .formula-details th {
    width: 35%;
  }
}