* { box-sizing: border-box; }
body { font-family: system-ui, sans-serif; max-width: 42rem; margin: 0 auto; padding: 1.5rem; line-height: 1.5; color: #1a1a1a; }
header { border-bottom: 1px solid #ddd; margin-bottom: 1.5rem; }
header h1 { margin: 0; font-size: 1.25rem; }
header h1 a { color: inherit; text-decoration: none; }
main { min-height: 40vh; }
footer { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid #ddd; font-size: 0.875rem; color: #666; }

.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.25rem; font-weight: 500; }
.form-group input { width: 100%; padding: 0.5rem; font-size: 1rem; border: 1px solid #ccc; border-radius: 4px; }
button, .btn { display: inline-block; padding: 0.5rem 1rem; font-size: 1rem; background: #2563eb; color: #fff; border: none; border-radius: 4px; cursor: pointer; text-decoration: none; }
button:hover, .btn:hover { background: #1d4ed8; }
.error { color: #b91c1c; margin: 0.5rem 0; }
.notice { color: #0d9488; margin: 0.5rem 0; }

.report-dl { margin: 1rem 0; }
.report-dl dt { font-weight: 600; margin-top: 0.75rem; }
.report-dl dd { margin-left: 0; }