body {
  font-family: var(--font-sans);
  font-weight: var(--weight-light);
  font-size: var(--text-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background: linear-gradient(
    180deg,
    var(--color-cream) 0%,
    #E5E0DA 30%,
    #DDD9D2 55%,
    #D4D0CB 80%,
    var(--color-blue) 100%
  );
  background-attachment: fixed;
  overflow-x: hidden;
}

/* ─── Grain texture overlay ───────────────────── */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9000;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' \
xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence \
type='fractalNoise' baseFrequency='0.85' numOctaves='4' \
stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' \
height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

/* ─── Scroll progress bar ─────────────────────── */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(
    90deg,
    var(--color-blue-dark),
    var(--color-burgundy)
  );
  z-index: 9999;
  transition: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: var(--weight-medium);
  line-height: var(--line-height-tight);
  color: var(--color-text);
}

.section__title {
  font-size: clamp(2rem, 5vw, var(--text-4xl));
  margin-bottom: var(--space-4);
  letter-spacing: 0.02em;
}

.section__subtitle {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--space-12);
  max-width: 500px;
}

p {
  max-width: 65ch;
}

a {
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-blue-dark);
}

::selection {
  background-color: var(--color-blue-light);
  color: var(--color-text);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-weight: var(--weight-medium);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-3) var(--space-8);
  border-radius: var(--radius-sm);
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    transform var(--transition-fast);
}

.btn:active {
  transform: scale(0.97);
}

.btn--primary {
  background-color: var(--color-burgundy);
  color: var(--color-cream);
}

.btn--primary:hover {
  background-color: var(--color-burgundy-dark);
  color: var(--color-cream);
}