body {
  font-family: system-ui, sans-serif;
  margin: 0;
  background: #f5f7fa;
}

/* Header */
header {
  background: #1f2933;
  color: #fff;
  padding: 16px 32px;
}

header h1 {
  margin: 0;
  font-size: 24px;
}

/* Main container */
main {
  padding: 24px 32px;
  max-width: 1200px;
  margin: 0 auto;
}

/* File list entries */
.file-entry {
  padding: 8px 12px;
  background: #fff;
  margin-bottom: 6px;
  border-radius: 6px;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.file-entry:hover {
  background: #eef2f7;
}

/* Report sections */
section {
  background: #fff;
  border-radius: 8px;
  padding