:root {
  --bg-deep: #0a0f1e;
  --bg-card: #111827;
  --bg-card-hover: #1a2332;
  --surface: #151d2e;
  --accent: #00d4aa;
  --accent-dim: rgba(0, 212, 170, 0.12);
  --accent-glow: rgba(0, 212, 170, 0.25);
  --text-primary: #f0f4f8;
  --text-secondary: #8899aa;
  --text-muted: #556677;
  --border: rgba(255,255,255,0.06);
  --border-accent: rgba(0, 212, 170, 0.3);
}

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

body {
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: 'DM Sans', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  line-height: 1.15;
}

/* ============ HERO ============ */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
  padding: 6rem 5vw 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.8rem, 5vw, 4.2rem);
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.hero h1 .strike {
  text-decoration: line-through;
  color: var(--text-muted);
  text-decoration-color: var(--accent);
  text-decoration-thickness: 3px;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 520px;
  line-height: 1.7;
}

.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem 2rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto auto;
  gap: 0 1rem;
  align-items: center;
  transition: border-color 0.3s, transform 0.3s;
}

.stat-card:hover {
  border-color: var(--border-accent);
  transform: translateX(-4px);
}

.stat-icon {
  font-size: 1.4rem;
  grid-row: span 2;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border-radius: 12px;
  color: var(--accent);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  grid-column: 2;
}

.stat-compare {
  font-size: 0.85rem;
  color: var(--text-secondary);
  grid-column: 3;
  grid-row: span 2;
  text-align: right;
}

/* ============ PROBLEM ============ */
.problem {
  padding: 8rem 5vw;
  background: var(--surface);
  position: relative;
}

.problem::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-glow), transparent);
}

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

.problem h2 {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  margin-bottom: 4rem;
  color: var(--text-primary);
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.problem-card {
  padding: 2rem;
  border-radius: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: border-color 0.3s;
}

.problem-card:hover { border-color: var(--border-accent); }

.problem-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 1rem;
  letter-spacing: 0.08em;
}

.problem-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

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

/* ============ FEATURES ============ */
.features {
  padding: 8rem 5vw;
}

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

.features-header {
  margin-bottom: 4rem;
}

.features-header h2 {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  margin-bottom: 1rem;
}

.features-sub {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.feature-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.5rem;
  transition: border-color 0.3s;
}

.feature-block:hover { border-color: var(--border-accent); }

.feature-large {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--surface) 100%);
  border-color: var(--border-accent);
}

.feature-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--accent-dim);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1rem;
}

.feature-block h3 {
  font-size: 1.3rem;
  margin-bottom: 0.6rem;
}

.feature-block p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 600px;
}

/* ============ HOW ============ */
.how {
  padding: 8rem 5vw;
  background: var(--surface);
  text-align: center;
  position: relative;
}

.how::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-glow), transparent);
}

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

.how h2 {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  margin-bottom: 1rem;
}

.how-sub {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 4rem;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.how-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.how-stat {
  padding: 2rem;
}

.how-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.how-label {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ============ CLOSING ============ */
.closing {
  padding: 10rem 5vw;
  text-align: center;
  position: relative;
}

.closing::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0.4;
}

.closing-inner {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
}

.closing h2 {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  margin-bottom: 1.5rem;
}

.closing-sub {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============ FOOTER ============ */
.site-footer {
  padding: 3rem 5vw;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
}

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

/* ============ RESPONSIVE ============ */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 4rem 5vw 3rem;
    gap: 3rem;
  }
  .problem-grid {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .feature-large {
    grid-column: span 1;
  }
  .how-stats {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .stat-card {
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto auto;
  }
  .stat-compare {
    grid-column: 2;
    grid-row: auto;
    text-align: left;
  }
}

@media (max-width: 600px) {
  .hero h1 { font-size: 2.2rem; }
  .problem h2, .features-header h2, .how h2, .closing h2 { font-size: 1.8rem; }
  .how-num { font-size: 2.5rem; }
}