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

body {
  font-family: system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  color: #1a1a1a;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
}

header {
  border-bottom: 2px solid #e0e0e0;
  padding-bottom: 20px;
  margin-bottom: 40px;
}

header h1 {
  font-size: 2em;
  margin-bottom: 5px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
  margin-top: 15px;
}

h1 { font-size: 2.5em; margin-bottom: 20px; }
h2 { font-size: 1.5em; margin: 30px 0 15px; border-bottom: 1px solid #e0e0e0; padding-bottom: 5px; }

img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 20px 0;
  border: 1px solid #e0e0e0;
  padding: 20px;
  background: #fafafa;
}

dl {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 10px 20px;
  margin: 20px 0;
}

dt { font-weight: 600; color: #555; }

a { color: #0066cc; text-decoration: none; }
a:hover { text-decoration: underline; }

.logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
  margin: 30px 0;
}

.logo-card {
  border: 1px solid #e0e0e0;
  padding: 15px;
  text-align: center;
  transition: border-color 0.2s;
}

.logo-card:hover { border-color: #0066cc; }

.logo-card img {
  width: 120px;
  height: 120px;
  object-fit: contain;
  margin: 0 auto 10px;
  border: none;
  background: white;
}

.category {
  display: inline-block;
  background: #f0f0f0;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 0.9em;
  margin-right: 8px;
}

.downloads {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.download-btn {
  display: inline-block;
  padding: 10px 20px;
  background: #0066cc;
  color: white;
  border-radius: 4px;
  font-weight: 500;
}

.download-btn:hover {
  background: #0052a3;
  text-decoration: none;
}

footer {
  border-top: 2px solid #e0e0e0;
  padding-top: 20px;
  margin-top: 60px;
  text-align: center;
  color: #666;
  font-size: 0.9em;
}

@media (max-width: 600px) {
  body { padding: 15px; }
  h1 { font-size: 2em; }
  dl { grid-template-columns: 1fr; }
  .logo-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
}