body {
  font-family: sans-serif;
  max-width: 850px;
  margin: 40px auto;
  padding: 0 20px;
  color: #1e293b;
  background: #f8fafc;
}

h1 {
  color: #0f172a;
}

a {
  color: #2563eb;
  margin-right: 12px;
}

.article-card {
  background: white;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  padding: 20px;
  margin: 15px 0;
}

.form-field {
  margin: 20px 0;
}

.form-field label {
  display: block;
  margin-bottom: 6px;
  font-weight: bold;
}

.form-field input[type="text"],
.form-field textarea {
  box-sizing: border-box;
  width: 100%;
  padding: 10px;
  border: 1px solid #94a3b8;
  border-radius: 6px;
}

input[type="submit"],
button {
  padding: 9px 16px;
  background: #2563eb;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

.errors {
  padding: 12px;
  background: #fef2f2;
  border: 1px solid #ef4444;
  border-radius: 8px;
}

.notice {
  color: #166534;
  font-weight: bold;
}