:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #1a1a26;
  --fg: #e8e8ed;
  --fg-muted: #8a8a9a;
  --accent: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.15);
  --accent-secondary: #22d3ee;
  --border: rgba(255,255,255,0.06);
  --radius: 16px;
  --radius-sm: 10px;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', system-ui, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* ---- HERO ---- */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 80px 24px 60px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: 720px;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--accent-glow);
  border: 1px solid rgba(59,130,246,0.3);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 28px;
  letter-spacing: 0.02em;
}

.hero h1 {
  font-size: clamp(2.4rem, 5.5vw, 3.8rem);
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}

.hero h1 .accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.lede {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.7;
}

.hero-visual {
  margin-top: 48px;
  position: relative;
  z-index: 1;
}

.stat-grid {
  display: flex;
  gap: 20px;
  justify-content: center;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 40px;
  text-align: center;
}

.stat-card.highlight {
  background: linear-gradient(135deg, rgba(59,130,246,0.12), rgba(34,211,238,0.08));
  border-color: rgba(59,130,246,0.25);
}

.stat-number {
  display: block;
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.stat-card.highlight .stat-number {
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--fg-muted);
}

/* ---- PROBLEM ---- */
.problem {
  padding: 100px 24px;
  background: var(--bg-elevated);
}

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

.problem h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  text-align: center;
  margin-bottom: 56px;
  letter-spacing: -0.02em;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

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

.problem-icon {
  font-size: 1.6rem;
  margin-bottom: 16px;
  opacity: 0.7;
}

.problem-item h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

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

/* ---- FEATURES ---- */
.features {
  padding: 100px 24px;
}

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

.features h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.features-sub {
  text-align: center;
  color: var(--fg-muted);
  font-size: 1.05rem;
  margin-bottom: 56px;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

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

.feature-card:hover {
  border-color: rgba(59,130,246,0.3);
}

.feature-num {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.feature-card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

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

/* ---- HOW ---- */
.how {
  padding: 100px 24px;
  background: var(--bg-elevated);
}

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

.how h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.how-sub {
  text-align: center;
  color: var(--fg-muted);
  font-size: 1.05rem;
  margin-bottom: 56px;
  line-height: 1.7;
}

.how-points {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.how-point {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.how-marker {
  flex-shrink: 0;
  width: 12px;
  height: 12px;
  margin-top: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
}

.how-point h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
}

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

/* ---- CLOSING ---- */
.closing {
  padding: 120px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.closing::before {
  content: '';
  position: absolute;
  bottom: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(34,211,238,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.closing-inner {
  max-width: 680px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.closing h2 {
  font-size: clamp(1.5rem, 3.2vw, 2rem);
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  line-height: 1.35;
}

.closing-sub {
  color: var(--fg-muted);
  font-size: 1.1rem;
  line-height: 1.7;
}

/* ---- FOOTER ---- */
.site-footer {
  padding: 40px 24px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
}

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

/* ---- NAV ---- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,10,15,0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 32px;
}
.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}
.nav-link {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}
.nav-link:hover { color: var(--fg); }
.nav-cta {
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  transition: opacity 0.2s;
}
.nav-cta:hover { opacity: 0.9; }

/* ---- CTA BUTTONS ---- */
.btn-hero-primary {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  transition: opacity 0.2s, transform 0.1s;
  cursor: pointer;
}
.btn-hero-primary:hover { opacity: 0.9; transform: translateY(-1px); }
.btn-hero-secondary {
  display: inline-block;
  color: var(--fg-muted);
  text-decoration: none;
  padding: 14px 20px;
  font-size: 0.95rem;
  transition: color 0.2s;
}
.btn-hero-secondary:hover { color: var(--fg); }
.hero-ctas {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
  margin-top: 36px;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 640px) {
  .problem-grid,
  .feature-list {
    grid-template-columns: 1fr;
  }
  .stat-grid {
    flex-direction: column;
    align-items: center;
  }
  .stat-card {
    width: 100%;
    max-width: 280px;
  }
  .hero {
    min-height: 80vh;
    padding: 60px 20px 40px;
  }
  .footer-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}