:root {
  --bg: #0a0f1a;
  --bg-warm: #0f1420;
  --surface: #151c2e;
  --surface-hover: #1a2338;
  --fg: #e8eaf0;
  --fg-muted: #8b93a7;
  --accent: #38bdf8;
  --accent-warm: #67e8f9;
  --accent-glow: rgba(56, 189, 248, 0.15);
  --gradient-1: #38bdf8;
  --gradient-2: #818cf8;
  --gradient-3: #c084fc;
  --success: #4ade80;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  --radius: 16px;
  --radius-sm: 10px;
}

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

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

/* ===== HERO ===== */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 24px 60px;
  position: relative;
  background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(56, 189, 248, 0.08), transparent),
              radial-gradient(ellipse 60% 40% at 80% 0%, rgba(129, 140, 248, 0.06), transparent);
}

.hero-inner {
  max-width: 780px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 100px;
  background: var(--accent-glow);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 28px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2), var(--gradient-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--fg-muted);
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.7;
}

/* Floating stat cards */
.hero-visual {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-top: 56px;
  flex-wrap: wrap;
}

.stat-card {
  background: var(--surface);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 22px 28px;
  text-align: left;
  min-width: 200px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(56, 189, 248, 0.08);
}

.stat-icon {
  font-size: 1.6rem;
  margin-bottom: 10px;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent-warm);
  margin-top: 4px;
}

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

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

.section-label {
  font-family: var(--font-display);
  font-size: 0.82rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 600;
  margin-bottom: 20px;
}

.problem-statement {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3.5vw, 2.2rem);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.02em;
  margin-bottom: 56px;
}

.problem-statement strong {
  color: var(--accent-warm);
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.problem-item {
  padding: 28px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid rgba(255,255,255,0.04);
}

.problem-number {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.problem-desc {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

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

.features-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.features-intro {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--fg-muted);
  margin-bottom: 56px;
  max-width: 520px;
}

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

.feature-card {
  padding: 36px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid rgba(255,255,255,0.04);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-3px);
}

.feature-accent-1:hover { border-color: rgba(56, 189, 248, 0.3); }
.feature-accent-2:hover { border-color: rgba(74, 222, 128, 0.3); }
.feature-accent-3:hover { border-color: rgba(129, 140, 248, 0.3); }
.feature-accent-4:hover { border-color: rgba(192, 132, 252, 0.3); }

.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

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

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

.how-inner {
  max-width: 700px;
  margin: 0 auto;
}

.steps {
  margin-top: 48px;
}

.step {
  padding: 8px 0;
}

.step-num {
  font-family: var(--font-display);
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.step h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.step p {
  color: var(--fg-muted);
  font-size: 1rem;
  line-height: 1.65;
}

.step-line {
  width: 2px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  margin: 16px 0 16px 8px;
  opacity: 0.4;
}

/* ===== CLOSING ===== */
.closing {
  padding: 120px 24px;
  text-align: center;
  position: relative;
  background: radial-gradient(ellipse 70% 50% at 50% 100%, rgba(129, 140, 248, 0.06), transparent);
}

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

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.closing-sub {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--fg-muted);
  line-height: 1.7;
}

/* ===== FOOTER ===== */
.footer {
  padding: 40px 24px;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .problem-grid {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .hero-visual {
    flex-direction: column;
    align-items: center;
  }
  .stat-card {
    width: 100%;
    max-width: 300px;
  }
  .footer-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 80px 20px 40px;
  }
  .problem, .features, .how {
    padding: 70px 20px;
  }
  .closing {
    padding: 80px 20px;
  }
}