:root {
  font-family: system-ui, -apple-system, sans-serif;
  line-height: 1.5;
  color: #1a1a1a;
  background-color: #fafafa;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  max-width: 640px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.entry-header {
  margin-bottom: 2rem;
}

.entry-header h1 {
  font-size: 1.75rem;
  margin: 0 0 0.5rem;
}

.entry-tagline {
  margin: 0;
  color: #555;
  font-size: 0.95rem;
}

.entry-main {
  flex: 1;
}

.tool-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.tool-item {
  margin-bottom: 1rem;
}

.tool-link {
  display: block;
  padding: 1rem;
  background: #fff;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.tool-link:hover {
  border-color: #1a73e8;
  box-shadow: 0 2px 8px rgba(26, 115, 232, 0.1);
}

.tool-link strong {
  display: block;
  margin-bottom: 0.25rem;
}

.tool-link span {
  font-size: 0.875rem;
  color: #555;
}

.site-footer {
  margin-top: 2rem;
  padding: 1rem 1.5rem;
  border-top: 1px solid #e6edf8;
  background: #f8fbff;
  font-size: 0.875rem;
  text-align: center;
  border-radius: 10px;
}

.footer-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1rem;
}

.footer-nav-link {
  color: #33608f;
  text-decoration: none;
  font-weight: 600;
}

.footer-nav-link:hover,
.footer-nav-link:focus-visible {
  color: #0f6bb0;
  text-decoration: underline;
}

.footer-copy {
  margin: 0.625rem 0 0;
  color: #5f7693;
  font-size: 0.8125rem;
  line-height: 1.5;
}

.footer-copy a {
  color: #0f6bb0;
}

.footer-copyright {
  margin: 0.375rem 0 0;
  color: #4b6383;
  font-size: 0.8125rem;
  line-height: 1.4;
}

@media (max-width: 420px) {
  .site-footer {
    padding: 0.875rem 1rem;
  }

  .footer-nav-list {
    gap: 0.375rem 0.75rem;
  }
}