body {
  background-color: var(--color-bg-base);
  color: var(--color-text-primary);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
}

h1, h2, h3, h4 {
  font-family: 'Syne', system-ui, sans-serif;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.4rem, 5.5vw, 4.5rem); font-weight: 800; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.75rem); font-weight: 700; }
h3 { font-size: 1.2rem; font-weight: 700; }

p { color: var(--color-text-secondary); }

.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-3);
  margin-bottom: var(--space-3);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 4px 20px rgba(37,99,235,0.35);
}
.btn--primary:hover { box-shadow: 0 6px 28px rgba(37,99,235,0.5); }

.btn--ghost {
  border: 1px solid var(--color-bg-border);
  color: var(--color-text-primary);
  background: transparent;
}
.btn--ghost:hover {
  border-color: var(--color-accent-1);
  color: var(--color-text-accent);
  background: rgba(37,99,235,0.08);
}

/* Scroll-reveal base */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Focus ring */
:focus-visible {
  outline: 2px solid var(--color-accent-1);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}