:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #16161f;
  --fg: #e8e8ed;
  --fg-muted: #8888a0;
  --fg-dim: #55556a;
  --accent: #6ee7b7;
  --accent-dim: rgba(110, 231, 183, 0.12);
  --accent-glow: rgba(110, 231, 183, 0.06);
  --border: rgba(255, 255, 255, 0.06);
  --radius: 12px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* === HERO === */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(110, 231, 183, 0.04) 0%, transparent 70%);
}

.hero-inner {
  max-width: 780px;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2.5px;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 8px 20px;
  border-radius: 100px;
  margin-bottom: 40px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
  color: var(--fg);
}

.hero h1 .accent {
  color: var(--accent);
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 560px;
  margin: 0 auto 56px;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  padding: 28px 40px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* === PROBLEM === */
.problem {
  padding: 120px 24px;
}

.problem-inner {
  max-width: 960px;
  margin: 0 auto;
}

.problem h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 56px;
  max-width: 600px;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.problem-icon {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--fg-dim);
  margin-bottom: 20px;
}

.problem-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--fg);
}

.problem-card p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* === FEATURES === */
.features {
  padding: 120px 24px;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-elevated) 100%);
}

.features-inner {
  max-width: 720px;
  margin: 0 auto;
}

.features-header {
  margin-bottom: 64px;
}

.features-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.features-sub {
  font-size: 1.05rem;
  color: var(--fg-muted);
}

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

.feature-item {
  display: flex;
  gap: 24px;
  padding: 36px 0;
  border-top: 1px solid var(--border);
}

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

.feature-marker {
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  margin-top: 8px;
  flex-shrink: 0;
}

.feature-content h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--fg);
}

.feature-content p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* === HOW === */
.how {
  padding: 120px 24px;
  background: var(--bg-elevated);
}

.how-inner {
  max-width: 720px;
  margin: 0 auto;
}

.how h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 56px;
}

.how-steps {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.how-step {
  display: flex;
  gap: 28px;
  align-items: flex-start;
}

.step-number {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  flex-shrink: 0;
  width: 40px;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--fg);
}

.step-content p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* === CLOSING === */
.closing {
  padding: 120px 24px;
  text-align: center;
  background: radial-gradient(ellipse 80% 50% at 50% 100%, rgba(110, 231, 183, 0.04) 0%, transparent 60%);
}

.closing-inner {
  max-width: 680px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.closing-sub {
  font-size: 1.05rem;
  color: var(--fg-muted);
  margin-bottom: 48px;
  line-height: 1.7;
}

.closing-comparison {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
}

.comp-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 36px;
  border-radius: var(--radius);
}

.comp-item.old {
  background: rgba(255, 100, 100, 0.06);
  border: 1px solid rgba(255, 100, 100, 0.1);
}

.comp-item.new {
  background: var(--accent-dim);
  border: 1px solid rgba(110, 231, 183, 0.2);
}

.comp-label {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--fg-muted);
}

.comp-price {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--fg);
}

.comp-vs {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 2px;
}

/* === FOOTER === */
.site-footer {
  padding: 60px 24px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 8px;
}

.footer-tagline {
  font-size: 0.9rem;
  color: var(--fg-dim);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding: 100px 20px 80px;
  }

  .hero-stats {
    flex-direction: column;
    gap: 20px;
    padding: 24px;
  }

  .stat-divider {
    width: 40px;
    height: 1px;
  }

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

  .problem,
  .features,
  .how,
  .closing {
    padding: 80px 20px;
  }

  .closing-comparison {
    flex-direction: column;
    gap: 16px;
  }

  .comp-vs {
    margin: 4px 0;
  }

  .feature-item {
    padding: 28px 0;
  }
}