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

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: #f5f7fb;
  color: #1f2937;
  line-height: 1.7;
}

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 40px 20px;
}

header {
  border-bottom: 1px solid #e5e7eb;
  padding-bottom: 20px;
  margin-bottom: 30px;
}

header h1 {
  font-size: 1.8rem;
  margin-bottom: 6px;
}

header p {
  color: #6b7280;
  font-size: 0.95rem;
}

.category {
  margin-bottom: 40px;
}

.category h2 {
  font-size: 1.4rem;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid #e5e7eb;
}

.file-list {
  list-style: none;
}

.file-list li {
  padding: 10px 0;
  border-bottom: 1px solid #eee;
}

.file-list li:last-child {
  border-bottom: none;
}

.file-list a {
  color: #2563eb;
  text-decoration: none;
  font-size: 1rem;
}

.file-list a:hover {
  text-decoration: underline;
}