body {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}

/* Noise/grain overlay */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: var(--noise-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* Skip to content */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 10000;
  padding: 12px 24px;
  background: var(--accent-green);
  color: var(--bg-primary);
  font-weight: 700;
  border-radius: 0 0 8px 8px;
  transition: top var(--duration-fast);
}

.skip-link:focus {
  top: 0;
}

/* Typography scale */
h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.1;
}

h3 {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 600;
  line-height: 1.2;
}

h4 {
  font-family: var(--font-body);
  font-size: clamp(1.1rem, 1.5vw, 1.25rem);
  font-weight: 600;
  line-height: 1.3;
}

p {
  font-size: clamp(0.95rem, 1.2vw, 1.1rem);
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 65ch;
}

.text-mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.text-muted {
  color: var(--text-muted);
}

.text-green {
  color: var(--accent-green);
}

.text-amber {
  color: var(--accent-amber);
}

.text-red {
  color: var(--accent-red);
}

.text-brand {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.gradient-text {
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Section titles */
.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  border-radius: 100px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  color: var(--accent-green);
  margin-bottom: 20px;
}

.section-title {
  margin-bottom: 16px;
}

.section-subtitle {
  max-width: 600px;
  margin-bottom: 48px;
}

.section-header {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Selection */
::selection {
  background: var(--selection-bg);
  color: var(--text-primary);
}