:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: #16161f;
  --bg-card-hover: #1c1c28;
  --text-primary: #f0f0f5;
  --text-secondary: #8888a0;
  --text-muted: #55556a;
  --accent: #00d4aa;
  --accent-dim: rgba(0, 212, 170, 0.15);
  --accent-glow: rgba(0, 212, 170, 0.08);
  --gold: #f5c842;
  --gold-dim: rgba(245, 200, 66, 0.12);
  --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-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---- HERO ---- */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: 120px 48px 80px;
  overflow: hidden;
}

.hero-inner {
  max-width: 800px;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 8px 18px;
  border-radius: 100px;
  margin-bottom: 32px;
  border: 1px solid rgba(0, 212, 170, 0.2);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(48px, 7vw, 88px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 28px;
}

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

.hero .lede {
  font-size: 19px;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 24px 0;
  border-top: 1px solid var(--border);
}

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-top: 4px;
}

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

.hero-glow {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 170, 0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
}

/* ---- PROBLEM ---- */
.problem {
  padding: 100px 48px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.problem-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.problem-left h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -1px;
  margin-bottom: 20px;
}

.problem-left p {
  color: var(--text-secondary);
  font-size: 17px;
  line-height: 1.7;
}

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

.comparison-old, .comparison-new {
  padding: 28px;
  border-radius: var(--radius);
}

.comparison-old {
  background: rgba(255, 60, 60, 0.04);
  border: 1px solid rgba(255, 60, 60, 0.1);
}

.comparison-new {
  background: var(--accent-glow);
  border: 1px solid rgba(0, 212, 170, 0.15);
}

.comparison-label {
  display: block;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.comparison-old .comparison-label { color: rgba(255, 100, 100, 0.7); }
.comparison-new .comparison-label { color: var(--accent); }

.comparison ul {
  list-style: none;
}

.comparison li {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}

.comparison li:last-child { border-bottom: none; }

.comparison-old li::before { content: '\2715 '; color: rgba(255, 100, 100, 0.5); margin-right: 8px; }
.comparison-new li::before { content: '\2713 '; color: var(--accent); margin-right: 8px; }

/* ---- FEATURES ---- */
.features {
  padding: 100px 48px;
}

.features-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.features-header h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 48px;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(0, 212, 170, 0.15);
}

.feature-large {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(0, 212, 170, 0.03) 100%);
}

.feature-icon {
  font-size: 24px;
  color: var(--accent);
  margin-bottom: 16px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
}

/* ---- HOW ---- */
.how {
  padding: 100px 48px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.how-inner {
  max-width: 900px;
  margin: 0 auto;
}

.how-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 56px;
}

.how-grid {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.how-item {
  display: flex;
  gap: 32px;
  align-items: flex-start;
}

.how-number {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  color: rgba(0, 212, 170, 0.15);
  line-height: 1;
  min-width: 80px;
}

.how-content h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 8px;
}

.how-content p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.7;
}

/* ---- CLOSING ---- */
.closing {
  position: relative;
  padding: 120px 48px;
  text-align: center;
  overflow: hidden;
}

.closing-inner {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.closing-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 212, 170, 0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -1px;
  margin-bottom: 20px;
}

.closing p {
  color: var(--text-secondary);
  font-size: 18px;
  line-height: 1.7;
}

/* ---- FOOTER ---- */
.site-footer {
  padding: 40px 48px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.footer-meta {
  font-size: 13px;
  color: var(--text-muted);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .hero {
    padding: 80px 24px 60px;
    min-height: 80vh;
  }

  .hero-stats {
    gap: 20px;
  }

  .stat-number { font-size: 22px; }

  .problem { padding: 60px 24px; }

  .problem-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .features { padding: 60px 24px; }

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

  .feature-large { grid-column: auto; }

  .how { padding: 60px 24px; }

  .how-item {
    flex-direction: column;
    gap: 12px;
  }

  .how-number {
    font-size: 36px;
    min-width: auto;
  }

  .closing { padding: 80px 24px; }

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