:root {
  --color-bg: #ffffff;
  --color-bg-light: #f9fafb;
  --color-text: #1f2937;
  --color-text-secondary: #4b5563;
  --color-link: #2563eb;
  --color-border: #e5e7eb;
  --color-primary: #1e40af;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --radius: 8px;
  --container-max: 800px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg-light);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-header {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
}

.logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  gap: 12px;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
}

.domain-note {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.nav {
  display: none;
}

@media (min-width: 768px) {
  .nav {
    display: flex;
    gap: 1.5rem;
    margin-left: auto;
  }
  .nav-link {
    text-decoration: none;
    color: var(--color-text-secondary);
    font-weight: 500;
  }
  .nav-link.active,
  .nav-link:hover {
    color: var(--color-link);
  }
}

.article {
  padding: 2rem 0;
}

.article .container {
  background-color: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem;
}

.badge {
  display: inline-block;
  background-color: #dbeafe;
  color: var(--color-primary);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

h1 {
  font-size: 1.875rem;
  margin-bottom: 1.5rem;
  line-height: 1.3;
}

.lead {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
}

.article__section {
  margin-bottom: 2rem;
}

h2 {
  font-size: 1.375rem;
  margin-bottom: 1rem;
  color: var(--color-text);
}

p {
  margin-bottom: 1rem;
}

ul, ol {
  margin-left: 1.5rem;
  margin-bottom: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

a {
  color: var(--color-link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.disclaimer {
  background-color: #fef3c7;
  padding: 1rem;
  border-radius: var(--radius);
  border-left: 4px solid #f59e0b;
}

.site-footer {
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  margin-top: 3rem;
}

.footer-menu {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  list-style: none;
  margin-bottom: 1.5rem;
  padding: 0;
}

.footer-menu a {
  font-size: 0.9375rem;
}

.form {
  max-width: 600px;
  margin-top: 1.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
}

.button {
  display: inline-block;
  background-color: var(--color-primary);
  color: white;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--radius);
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  font-family: inherit;
  font-size: 1rem;
  transition: background-color 0.2s;
}

.button:hover {
  background-color: #1d4ed8;
}

@media (max-width: 767px) {
  .article .container {
    padding: 1.5rem;
  }
  h1 {
    font-size: 1.5rem;
  }
  .lead {
    font-size: 1rem;
  }
}