:root {
  --bg: #0a0c10;
  --bg-surface: #12151c;
  --bg-card: #181c26;
  --bg-card-hover: #1e2330;
  --fg: #e8eaf0;
  --fg-muted: #8b90a0;
  --fg-subtle: #5a5f72;
  --accent: #3b82f6;
  --accent-warm: #f59e0b;
  --accent-glow: rgba(59, 130, 246, 0.15);
  --border: #1e2230;
  --border-light: #2a2f40;
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --radius: 12px;
  --max-width: 1120px;
}

* { 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: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

/* ===== HERO ===== */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
  background: radial-gradient(ellipse 80% 50% at 50% -10%, rgba(59, 130, 246, 0.12), transparent),
              radial-gradient(ellipse 60% 40% at 80% 80%, rgba(245, 158, 11, 0.06), transparent);
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(59, 130, 246, 0.3);
  padding: 8px 20px;
  border-radius: 100px;
  margin-bottom: 40px;
  background: var(--accent-glow);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(42px, 7vw, 80px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 28px;
  max-width: 800px;
}

.hero .lede {
  font-size: 18px;
  color: var(--fg-muted);
  max-width: 600px;
  margin-bottom: 60px;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 40px;
  padding: 32px 48px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.stat { text-align: center; }

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  color: var(--accent-warm);
  margin-bottom: 6px;
}

.stat-label {
  display: block;
  font-size: 13px;
  color: var(--fg-subtle);
  max-width: 160px;
  line-height: 1.4;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: var(--border-light);
}

/* ===== PROBLEM ===== */
.problem {
  padding: 120px 24px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.problem-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.problem-label,
.features-label,
.rhythm-label {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.problem h2,
.features h2,
.rhythm h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 48px;
  max-width: 640px;
}

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

.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color 0.2s;
}

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

.problem-icon {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 800;
  color: var(--accent-warm);
  margin-bottom: 16px;
  opacity: 0.8;
}

.problem-card p {
  color: var(--fg-muted);
  font-size: 15px;
  line-height: 1.65;
}

/* ===== FEATURES ===== */
.features {
  padding: 120px 24px;
}

.features-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.features-grid {
  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;
  transition: border-color 0.2s, background 0.2s;
}

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

.feature-large {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--bg-card), rgba(59, 130, 246, 0.05));
  border-color: rgba(59, 130, 246, 0.2);
}

.feature-tag {
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
  opacity: 0.9;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.3;
}

.feature-card p {
  color: var(--fg-muted);
  font-size: 15px;
  line-height: 1.65;
}

/* ===== RHYTHM ===== */
.rhythm {
  padding: 120px 24px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.rhythm-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.rhythm-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.rhythm-step {
  display: flex;
  align-items: flex-start;
  gap: 36px;
  padding: 36px 0;
  border-bottom: 1px solid var(--border);
}

.rhythm-step:last-child {
  border-bottom: none;
}

.step-number {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 800;
  color: var(--accent);
  opacity: 0.2;
  line-height: 1;
  flex-shrink: 0;
  width: 80px;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-content p {
  color: var(--fg-muted);
  font-size: 15px;
  line-height: 1.65;
  max-width: 560px;
}

/* ===== CLOSING ===== */
.closing {
  padding: 140px 24px;
  text-align: center;
  position: relative;
  background: radial-gradient(ellipse 70% 60% at 50% 100%, rgba(59, 130, 246, 0.08), transparent);
}

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

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 24px;
}

.closing-text {
  font-size: 18px;
  color: var(--fg-muted);
  line-height: 1.75;
  max-width: 580px;
  margin: 0 auto;
}

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

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

.footer-brand {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--fg);
}

.footer-note {
  font-size: 13px;
  color: var(--fg-subtle);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero { padding: 80px 20px 60px; min-height: auto; }
  .hero h1 { letter-spacing: -1px; }
  .hero-stats {
    flex-direction: column;
    gap: 24px;
    padding: 24px;
  }
  .stat-divider { width: 48px; height: 1px; }
  .problem, .features, .rhythm, .closing { padding: 80px 20px; }
  .problem-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .feature-large { grid-column: span 1; }
  .rhythm-step { flex-direction: column; gap: 12px; }
  .step-number { font-size: 32px; width: auto; }
  .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 36px; }
  .hero .lede { font-size: 16px; }
  .problem h2, .features h2, .rhythm h2 { font-size: 26px; }
  .closing h2 { font-size: 28px; }
}