/* Reset and base */
* {
  box-sizing: border-box;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: #222;
  background: #fafafa;
}

body {
  margin: 0;
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.site-header {
  background: white;
  border-bottom: 1px solid #e5e5e5;
  padding: 1rem 0;
  margin-bottom: 3rem;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title {
  font-size: 1.4rem;
  font-weight: 700;
  text-decoration: none;
  color: #1a3d4e;
  letter-spacing: -0.01em;
}

.site-header nav a {
  color: #555;
  text-decoration: none;
  margin-left: 1.5rem;
  font-size: 0.95rem;
}

.site-header nav a:hover {
  color: #1a3d4e;
}

/* Typography */
h1 {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 0.5rem 0;
  letter-spacing: -0.02em;
  color: #1a3d4e;
}

h2 {
  font-size: 1.4rem;
  font-weight: 600;
  margin: 2.5rem 0 0.75rem 0;
  color: #1a3d4e;
}

h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem 0;
}

p {
  margin: 0 0 1rem 0;
}

/* Links */
a {
  color: #1a6fa8;
}

a:hover {
  color: #0d4d7a;
}

/* Lists */
ul {
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.4rem;
}

/* Small text */
small {
  color: #888;
  font-size: 0.85rem;
}

hr {
  border: none;
  border-top: 1px solid #e5e5e5;
  margin: 2.5rem 0;
}

/* Footer */
.site-footer {
  margin-top: 4rem;
  padding: 2rem 0;
  border-top: 1px solid #e5e5e5;
  color: #888;
  font-size: 0.9rem;
}

/* Mobile */
@media (max-width: 600px) {
  html {
    font-size: 16px;
  }
  h1 {
    font-size: 1.8rem;
  }
  .site-header .container {
    flex-direction: column;
    gap: 0.5rem;
  }
  .site-header nav a {
    margin: 0 0.75rem;
  }
}