:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a26;
  --bg-card-alt: #0d1a12;
  --fg-primary: #e8e8ef;
  --fg-secondary: #8a8a9e;
  --fg-muted: #5a5a6e;
  --accent: #4fffb0;
  --accent-dim: #2a7a56;
  --accent-glow: rgba(79, 255, 176, 0.08);
  --border: #2a2a3a;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

body {
  background: var(--bg-primary);
  color: var(--fg-primary);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
}

/* HERO */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 100px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
}

.helix-line {
  position: absolute;
  width: 1px;
  height: 120%;
  top: -10%;
  opacity: 0.12;
}

.helix-1 {
  left: 15%;
  background: linear-gradient(180deg, transparent, var(--accent), transparent);
  transform: rotate(3deg);
}

.helix-2 {
  left: 50%;
  background: linear-gradient(180deg, transparent, var(--accent-dim), transparent);
  transform: rotate(-2deg);
}

.helix-3 {
  right: 20%;
  background: linear-gradient(180deg, transparent, var(--accent), transparent);
  transform: rotate(5deg);
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  padding: 8px 20px;
  border-radius: 100px;
  margin-bottom: 40px;
}

.hero h1 {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -2px;
  margin-bottom: 28px;
  background: linear-gradient(135deg, var(--fg-primary) 40%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.lede {
  font-size: 1.2rem;
  color: var(--fg-secondary);
  max-width: 640px;
  line-height: 1.8;
  margin-bottom: 60px;
}

.hero-stat-row {
  display: flex;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 0.82rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  max-width: 180px;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: var(--border);
}

/* PROBLEM */
.problem {
  padding: 140px 0;
  background: var(--bg-secondary);
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.problem h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 24px;
}

.problem p {
  color: var(--fg-secondary);
  margin-bottom: 20px;
}

.problem .highlight {
  color: var(--accent);
  font-weight: 500;
  border-left: 2px solid var(--accent-dim);
  padding-left: 20px;
}

.comparison-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  margin-bottom: 20px;
}

.comparison-card.old {
  background: var(--bg-primary);
  opacity: 0.6;
}

.comparison-card.new {
  background: var(--accent-glow);
  border-color: var(--accent-dim);
}

.card-label {
  font-family: var(--font-display);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--fg-muted);
  margin-bottom: 18px;
}

.comparison-card.new .card-label {
  color: var(--accent);
}

.comparison-card ul {
  list-style: none;
}

.comparison-card li {
  padding: 8px 0;
  padding-left: 20px;
  position: relative;
  color: var(--fg-secondary);
  font-size: 0.95rem;
}

.comparison-card li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--fg-muted);
}

.comparison-card.new li::before {
  background: var(--accent);
}

/* HOW IT WORKS */
.how {
  padding: 140px 0;
}

.how h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 16px;
}

.section-intro {
  color: var(--fg-secondary);
  font-size: 1.15rem;
  margin-bottom: 80px;
  max-width: 560px;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 40px;
  padding: 48px 0;
  border-top: 1px solid var(--border);
}

.step:last-child {
  border-bottom: 1px solid var(--border);
}

.step-number {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  color: var(--accent-dim);
  padding-top: 4px;
}

.step h3 {
  font-size: 1.4rem;
  margin-bottom: 14px;
}

.step p {
  color: var(--fg-secondary);
  max-width: 580px;
}

/* PROOF */
.proof {
  padding: 140px 0;
  background: var(--bg-secondary);
}

.proof h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 60px;
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.proof-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 36px 28px;
}

.proof-value {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
}

.proof-label {
  font-size: 0.85rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* CLOSING */
.closing {
  padding: 160px 0;
  text-align: center;
}

.closing-content {
  max-width: 720px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-bottom: 28px;
  line-height: 1.25;
}

.closing p {
  color: var(--fg-secondary);
  font-size: 1.1rem;
  margin-bottom: 20px;
}

.closing-tagline {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: 40px;
}

/* FOOTER */
.site-footer {
  padding: 48px 0;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
}

.footer-text {
  color: var(--fg-muted);
  font-size: 0.85rem;
}

/* MOBILE */
@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding: 100px 0 80px;
  }

  .hero h1 {
    font-size: 2.8rem;
    letter-spacing: -1px;
  }

  .hero-stat-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .stat-divider {
    display: none;
  }

  .problem-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .problem {
    padding: 80px 0;
  }

  .how {
    padding: 80px 0;
  }

  .step {
    grid-template-columns: 50px 1fr;
    gap: 20px;
    padding: 32px 0;
  }

  .proof {
    padding: 80px 0;
  }

  .proof-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .closing {
    padding: 80px 0;
  }

  .footer-content {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}