:root {
  --bg: #0a0e17;
  --bg-alt: #111827;
  --fg: #e2e8f0;
  --fg-muted: #94a3b8;
  --accent: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.15);
  --accent-warm: #f59e0b;
  --card-bg: #1e293b;
  --card-border: rgba(148, 163, 184, 0.1);
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
}

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

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

.hero-inner {
  max-width: 720px;
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 100px;
  background: var(--accent-glow);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  letter-spacing: -1.5px;
  margin-bottom: 28px;
}

.hero .lede {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.8;
}

.hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 600px;
  height: 600px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(56, 189, 248, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
}

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

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

.problem h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  margin-bottom: 56px;
  text-align: center;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.problem-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 36px 28px;
}

.problem-number {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent-warm);
  margin-bottom: 16px;
}

.problem-card p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

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

.features-inner {
  max-width: 800px;
  margin: 0 auto;
}

.features h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  margin-bottom: 16px;
}

.features-sub {
  color: var(--fg-muted);
  font-size: 1.05rem;
  margin-bottom: 64px;
  max-width: 540px;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.feature-item {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.feature-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 14px;
}

.feature-content h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.feature-content p {
  color: var(--fg-muted);
  font-size: 0.95rem;
}

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

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

.how h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  margin-bottom: 56px;
  text-align: center;
}

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

.how-step {
  padding: 8px 0;
}

.step-num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.3;
  margin-bottom: 16px;
  line-height: 1;
}

.how-step h3 {
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.how-step p {
  color: var(--fg-muted);
  font-size: 0.93rem;
}

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

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

.closing h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 24px;
  line-height: 1.35;
}

.closing-text {
  color: var(--fg-muted);
  font-size: 1.05rem;
  font-style: italic;
}

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

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

.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .problem-grid,
  .how-steps {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 70vh;
    padding: 60px 20px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .feature-item {
    flex-direction: column;
  }

  .footer-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .problem,
  .features,
  .how,
  .closing {
    padding: 64px 20px;
  }
}