/* ===========================
   Base Typography & Layout
   =========================== */

html, body {
  margin: 0;
  padding: 0;
  font-family: system-ui, sans-serif;
  line-height: 1.65;
  color: #222;
  background: #ffffff;
}

main, header, footer {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem;
}

h1, h2, h3, h4 {
  margin-top: 1.6rem;
  line-height: 1.3;
}

p {
  margin: 1rem 0;
}

ul, ol {
  margin: 1rem 0 1rem 1.5rem;
}

a {
  color: #0056b3;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ===========================
   Navigation
   =========================== */

.top-nav, .footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.top-nav a, .footer-nav a {
  color: #0056b3;
  font-weight: 500;
}

/* ===========================
   Hero / Highlight Sections
   =========================== */

.hero {
  background: #f5f7fa;
  padding: 2rem;
  border-radius: 8px;
  margin-bottom: 2rem;
}

/* ===========================
   Article Styling
   =========================== */

.article-header {
  margin-bottom: 1.5rem;
}

.article-meta {
  color: #666;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  margin: 1rem 0;
}

/* ===========================
   Footer
   =========================== */

footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid #ddd;
}

.muted {
  color: #666;
  font-size: 0.9rem;
}

/* ===========================
   Responsive
   =========================== */

@media (max-width: 600px) {
  main, header, footer {
    padding: 1rem;
  }

  .hero {
    padding: 1.2rem;
  }
}