*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: #1a1a2e;
  background-color: #f5f6f8;
}

.container {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.site-header {
  background-color: #ffffff;
  border-bottom: 1px solid #e2e5ea;
  padding: 2rem 0 1.5rem;
}

.site-title {
  margin: 0;
  font-size: 1.75rem;
  font-weight: 700;
  color: #0f3460;
  letter-spacing: -0.02em;
}

.site-subtitle {
  margin: 0.35rem 0 0;
  font-size: 0.95rem;
  color: #5a6270;
}

.page-title {
  margin: 0.5rem 0 0;
  font-size: 1.75rem;
  font-weight: 700;
  color: #0f3460;
  letter-spacing: -0.02em;
}

.breadcrumb {
  margin: 0;
  font-size: 0.875rem;
  color: #5a6270;
}

.breadcrumb a {
  color: #1a5fb4;
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb span {
  margin: 0 0.35rem;
  color: #9aa0ab;
}

main {
  padding: 2rem 0 3rem;
}

.card {
  background-color: #ffffff;
  border: 1px solid #e2e5ea;
  border-radius: 10px;
  padding: 1.75rem;
}

.card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: #0f3460;
}

.lead {
  margin: 0 0 1.5rem;
  color: #3d4450;
}

.doc-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.doc-link {
  display: block;
  padding: 1rem 1.25rem;
  background-color: #f0f4fa;
  border: 1px solid #d4dce8;
  border-radius: 8px;
  color: #1a5fb4;
  font-weight: 500;
  text-decoration: none;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.doc-link:hover {
  background-color: #e4ecf7;
  border-color: #b8c9e0;
}

.policy-content {
  background-color: #ffffff;
  border: 1px solid #e2e5ea;
  border-radius: 10px;
  padding: 1.75rem;
}

.policy-content section {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid #eef0f3;
}

.policy-content section:last-of-type {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.policy-content h2 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
  font-weight: 600;
  color: #0f3460;
}

.policy-content p {
  margin: 0 0 0.75rem;
  color: #3d4450;
}

.policy-content p:last-child {
  margin-bottom: 0;
}

.policy-content ul {
  margin: 0.5rem 0 0.75rem;
  padding-left: 1.25rem;
  color: #3d4450;
}

.policy-content li {
  margin-bottom: 0.4rem;
}

.policy-content li:last-child {
  margin-bottom: 0;
}

.back-nav {
  margin-top: 1.5rem;
}

.back-nav a {
  color: #1a5fb4;
  text-decoration: none;
  font-size: 0.95rem;
}

.back-nav a:hover {
  text-decoration: underline;
}

.site-footer {
  background-color: #ffffff;
  border-top: 1px solid #e2e5ea;
  padding: 1.25rem 0;
  text-align: center;
}

.site-footer p {
  margin: 0;
  font-size: 0.85rem;
  color: #7a8290;
}

@media (min-width: 640px) {
  .site-title,
  .page-title {
    font-size: 2rem;
  }

  .card,
  .policy-content {
    padding: 2rem 2.25rem;
  }

  .policy-content h2 {
    font-size: 1.25rem;
  }
}