body {
  font-family: var(--font-sans);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6, .font-serif {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.1;
  color: var(--color-text-primary);
}

.heading-1 { 
  font-size: clamp(3rem, 5vw + 1rem, 5.5rem); 
  letter-spacing: -0.03em; /* Tighter tracking for large serif */
}

.heading-2 { 
  font-size: clamp(2.5rem, 4vw + 1rem, 4.5rem); 
  letter-spacing: -0.02em; 
}

.heading-3 { 
  font-size: clamp(1.75rem, 2vw + 1rem, 2.75rem); 
  letter-spacing: -0.01em;
}

.heading-4 { 
  font-size: clamp(1.25rem, 1.5vw + 1rem, 1.75rem); 
}

.body-large { 
  font-size: clamp(1.125rem, 1.5vw, 1.25rem); 
  line-height: 1.7; 
  max-width: 65ch; /* Optimize line length for readability */
}

.body-base {
  font-size: 1rem;
  line-height: 1.6;
  max-width: 65ch;
}

.label { 
  font-size: 0.75rem; 
  text-transform: uppercase; 
  letter-spacing: 0.15em; /* Increased tracking for elegance */
  font-weight: 600; 
  color: var(--color-text-muted); 
  display: block;
}

/* Utilities for emphasis */
.text-muted {
  color: var(--color-text-muted);
}
.text-center {
  text-align: center;
}
.text-center .body-large, .text-center .body-base {
  margin-inline: auto; /* Ensure center-aligned paragraphs adhere to max-width */
}