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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 18px;
  line-height: 1.6;
  color: #1A1A1A;
  background: #FAFAF7;
  padding: 20px;
}

/* Header */
header {
  padding: 20px 0;
  border-bottom: 1px solid #E0E0E0;
  margin-bottom: 40px;
}

header a {
  font-size: 20px;
  font-weight: 600;
  color: #1A1A1A;
  text-decoration: none;
}

/* Main Container */
main {
  max-width: 720px;
  margin: 0 auto;
}

/* Typography Hierarchy */
h1 {
  font-size: 2.5rem;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  line-height: 1.3;
}

/* Article/Post Content */
article p {
  margin-bottom: 1.25rem;
}

article p:last-child {
  margin-bottom: 0;
}

/* Lead paragraph (first after h1) */
article h1 + p {
  font-size: 1.125rem;
  color: #333;
}

/* Meta/Time */
time {
  display: block;
  color: #6B6B6B;
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

/* Links */
a {
  color: #005FCC;
  text-decoration: underline;
}

a:hover {
  color: #0047A3;
}

/* Focus States (Accessibility) */
a:focus,
button:focus {
  outline: 2px solid #005FCC;
  outline-offset: 2px;
}

/* Footer */
footer {
  margin-top: 60px;
  padding-top: 20px;
  border-top: 1px solid #E0E0E0;
  text-align: center;
  color: #6B6B6B;
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  body {
    font-size: 17px;
    padding: 15px;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.35rem;
  }
}