:root {
  /* Colors - Premium Dark Theme */
  --bg: #09090b;
  --surface: #17171a;
  --surface-raised: #1e1e21;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.15);
  
  --text: #f4f4f5;
  --text-muted: #a1a1aa;
  --text-dim: #71717a;
  
  --primary: #4f46e5; /* Indigo */
  --primary-glow: rgba(79, 70, 229, 0.3);
  --accent: #10b981; /* Mint */
  --accent-glow: rgba(16, 185, 129, 0.3);
  
  /* Typography */
  --font-display: 'Bricolage Grotesque', sans-serif;
  --font-body: 'Instrument Sans', sans-serif;
  
  /* Spacing */
  --container: 1000px;
  --section-padding: clamp(4rem, 10vw, 8rem);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  width: min(var(--container), 90vw);
  margin-inline: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  border: 1px solid transparent;
  gap: 0.75rem;
}

.btn-primary {
  background: var(--text);
  color: var(--bg);
}

.btn-primary:hover {
  background: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.btn-accent {
  background: var(--primary);
  color: #ffffff;
}

.btn-accent:hover {
  background: #6366f1;
  transform: translateY(-2px);
  box-shadow: 0 10px 30px var(--primary-glow);
}

.btn-lg { padding: 1.25rem 2.5rem; font-size: 1.25rem; }

/* Header/Nav - Simplified for landing */
header {
  height: 80px;
  display: flex;
  align-items: center;
  position: absolute;
  top: 0;
  width: 100%;
  z-index: 100;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Hero Section */
.hero {
  padding-top: calc(80px + 6rem);
  padding-bottom: 6rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at 50% 120%, #1e1b4b 0%, var(--bg) 70%);
}

.hero h1 {
  font-size: clamp(3.5rem, 10vw, 6rem);
  margin-bottom: 1.5rem;
  background: linear-gradient(to bottom, #ffffff, #a1a1aa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p.lead {
  font-size: 1.5rem;
  color: var(--text-muted);
  max-width: 700px;
  margin-inline: auto;
  margin-bottom: 3rem;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 4rem;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-dim);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(255,255,255,0.03);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
}

.stat-item svg { color: var(--accent); }

.hero-visual {
  margin-top: 4rem;
  position: relative;
}

.hero-visual img {
  border-radius: var(--radius-lg);
  box-shadow: 0 50px 100px rgba(0,0,0,0.8);
  max-width: 600px;
  margin-inline: auto;
}

/* Pain Point Hook */
.hook {
  padding: var(--section-padding) 0;
  text-align: center;
  background: var(--bg);
}

.hook-content {
  max-width: 800px;
  margin-inline: auto;
  font-size: 1.75rem;
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.4;
  color: var(--text);
}

/* Chapters Table of Contents */
.chapters {
  padding: var(--section-padding) 0;
  background: var(--surface);
}

.chapters h2 {
  font-size: 3rem;
  text-align: center;
  margin-bottom: 4rem;
}

.chapters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 1.5rem;
}

.chapter-item {
  background: var(--surface-raised);
  padding: 2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  display: flex;
  gap: 1.5rem;
}

.chapter-num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  opacity: 0.5;
}

.chapter-info h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.chapter-info p {
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* Audience - Who is this for? */
.audience {
  padding: var(--section-padding) 0;
  background: var(--bg);
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  text-align: center;
}

.audience-item {
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.audience-item h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

/* Guarantee Section */
.guarantee {
  padding: var(--section-padding) 0;
  text-align: center;
  background: linear-gradient(to bottom, var(--bg), #0f172a);
}

.guarantee-box {
  max-width: 800px;
  margin-inline: auto;
  padding: 4rem;
  border: 1px dashed var(--accent);
  border-radius: var(--radius-lg);
  background: rgba(16, 185, 129, 0.03);
}

.guarantee-box h2 {
  font-size: 2.5rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

/* FAQ Section */
.faq {
  padding: var(--section-padding) 0;
  background: var(--bg);
}

.faq-grid {
  max-width: 800px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.faq-item h3 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
  color: var(--text);
}

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

/* Final CTA */
.final-cta {
  padding: var(--section-padding) 0;
  text-align: center;
  background: radial-gradient(circle at 50% -20%, #1e1b4b 0%, var(--bg) 80%);
}

.final-cta h2 {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.final-cta p {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
}

.payment-badge {
  margin-top: 2rem;
  font-size: 0.85rem;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

/* Footer (Small) */
footer {
  padding: 4rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-dim);
}

/* Loading State for Buy Button */
.btn.loading {
  opacity: 0.7;
  cursor: not-allowed;
}

.loading .btn-text {
  opacity: 0.5;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 3.5rem; }
  .final-cta h2 { font-size: 3rem; }
  .chapters-grid { grid-template-columns: 1fr; }
  .guarantee-box { padding: 2rem 1rem; }
}