:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #18182a;
  --fg: #e8e8f0;
  --fg-muted: #8888a0;
  --accent: #6c5ce7;
  --accent-glow: rgba(108, 92, 231, 0.3);
  --accent-bright: #a29bfe;
  --highlight: #00e676;
  --border: rgba(255,255,255,0.06);
  --radius: 16px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', 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: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.accent { color: var(--accent-bright); }

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  text-align: center;
  overflow: hidden;
}

.hero-inner {
  max-width: 780px;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  border: 1px solid var(--accent);
  border-radius: 100px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-bright);
  margin-bottom: 32px;
}

.hero h1 {
  font-size: clamp(2.8rem, 7vw, 5.2rem);
  margin-bottom: 28px;
}

.lede {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

.hero-glow {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  z-index: 1;
  pointer-events: none;
}

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

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

.problem h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: 56px;
  text-align: center;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: border-color 0.3s;
}

.problem-card:hover {
  border-color: rgba(255,255,255,0.12);
}

.problem-card.highlight {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--bg-card), rgba(108,92,231,0.08));
}

.problem-number {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 12px;
}

.problem-card.highlight .problem-number {
  color: var(--highlight);
}

.problem-label {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.5;
}

/* ===== HOW ===== */
.how {
  padding: 100px 24px;
}

.how h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  text-align: center;
  margin-bottom: 16px;
}

.how-intro {
  text-align: center;
  color: var(--fg-muted);
  max-width: 600px;
  margin: 0 auto 64px;
  font-size: 1.05rem;
}

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

.how-step {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  transition: transform 0.2s, border-color 0.3s;
}

.how-step:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.step-icon {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-bright);
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}

.how-step h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.how-step p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ===== NUMBERS ===== */
.numbers {
  padding: 100px 24px;
  background: var(--bg-elevated);
}

.numbers .section-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.numbers-content h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin-bottom: 20px;
}

.numbers-content p {
  color: var(--fg-muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.numbers-stats {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.stat {
  padding: 28px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  border-left: 3px solid var(--accent);
}

.stat-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-bright);
  margin-bottom: 4px;
}

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

/* ===== CLOSING ===== */
.closing {
  padding: 120px 24px;
  text-align: center;
}

.closing h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  max-width: 800px;
  margin: 0 auto 24px;
}

.closing-text {
  color: var(--fg-muted);
  max-width: 620px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.7;
}

/* ===== FOOTER ===== */
.footer {
  padding: 48px 24px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 6px;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .problem-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .how-grid {
    grid-template-columns: 1fr;
  }
  .numbers .section-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero {
    min-height: 80vh;
    padding: 80px 20px 60px;
  }
}

@media (max-width: 480px) {
  .problem-grid {
    grid-template-columns: 1fr;
  }
  body { font-size: 16px; }
  .hero { padding: 64px 16px 48px; }
  .problem, .how, .numbers { padding: 64px 16px; }
  .closing { padding: 80px 16px; }
}