* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.75;
  color: #222;
  background: #fafafa;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 20px 48px;
  background: #fff;
}

h1 {
  font-size: 1.5rem;
  margin: 0 0 8px;
}

.updated {
  color: #666;
  font-size: 0.9rem;
  margin-bottom: 24px;
}

pre {
  white-space: pre-wrap;
  word-wrap: break-word;
  font-family: inherit;
  font-size: 1rem;
  margin: 0;
}

nav.links {
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid #e0e0e0;
  font-size: 0.95rem;
}

nav.links a {
  color: #1565c0;
  margin-right: 16px;
}

main.contact {
  max-width: 960px;
}

.notice {
  background: #fff8e7;
  border: 1px solid #e0d8c0;
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 24px;
  font-size: 0.95rem;
}

form.contact-form .form-group-row {
  display: grid;
  grid-template-columns: 9.5rem 1fr;
  column-gap: 12px;
  align-items: center;
  margin-bottom: 20px;
}

form.contact-form .form-group-row label {
  margin: 0;
  font-weight: bold;
}

form.contact-form .form-group-stack {
  margin-bottom: 24px;
}

form.contact-form .form-group-stack label {
  display: block;
  font-weight: bold;
  margin: 0 0 8px;
}

form.contact-form .form-group-stack textarea {
  display: block;
  width: 100%;
  min-height: 80px;
  resize: vertical;
}

form.contact-form label {
  display: block;
  font-weight: bold;
  margin: 0 0 8px;
}

form.contact-form input[type="text"],
form.contact-form input[type="email"],
form.contact-form textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font: inherit;
  font-size: 1rem;
}

form.contact-form textarea {
  min-height: 80px;
  resize: vertical;
}

form.contact-form .form-group-row input[type="text"] {
  width: 100%;
}

form.contact-form button {
  margin-top: 8px;
  padding: 12px 24px;
  font: inherit;
  font-size: 1rem;
  font-weight: bold;
  color: #fff;
  background: #1565c0;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

form.contact-form button:hover {
  background: #0d47a1;
}

.message {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.message.success {
  background: #e8f5e9;
  border: 1px solid #a5d6a7;
}

.message.error {
  background: #ffebee;
  border: 1px solid #ef9a9a;
}