:root {
  --bg: #0d1117;
  --bg-warm: #131820;
  --fg: #e8e4df;
  --fg-muted: #9a9590;
  --accent: #f0a830;
  --accent-glow: rgba(240, 168, 48, 0.15);
  --teal: #2dd4a8;
  --surface: #1a2030;
  --surface-border: rgba(240, 168, 48, 0.1);
  --radius: 16px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', sans-serif;
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
}

/* HERO */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 10% 60px;
  overflow: hidden;
}

.hero-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 80%, rgba(240, 168, 48, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(45, 212, 168, 0.05) 0%, transparent 50%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-warm) 100%);
  z-index: 0;
}

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

.hero-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
  padding: 6px 14px;
  background: var(--accent-glow);
  border-radius: 100px;
}

.hero h1 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 28px;
}

.hero h1 .accent {
  color: var(--accent);
}

.lede {
  font-size: 1.2rem;
  color: var(--fg-muted);
  max-width: 520px;
  line-height: 1.7;
}

.hero-stats {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 48px;
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid var(--surface-border);
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-family: 'Syne', sans-serif;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--fg);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 4px;
}

/* FEATURES */
.features {
  padding: 120px 10%;
  background: var(--bg-warm);
}

.features-header {
  margin-bottom: 64px;
}

.features-header h2 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.features-sub {
  color: var(--fg-muted);
  font-size: 1.1rem;
  margin-top: 12px;
}

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

.feature-card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 40px 32px;
  transition: border-color 0.3s;
}

.feature-card:hover {
  border-color: var(--accent);
}

.feature-card--large {
  grid-column: span 2;
}

.feature-icon {
  font-size: 1.8rem;
  margin-bottom: 16px;
  display: block;
}

.feature-card h3 {
  font-family: 'Syne', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 10px;
}

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

/* RHYTHM */
.rhythm {
  padding: 120px 10%;
  background: var(--bg);
}

.rhythm-content h2 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
}

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

.rhythm-item {
  display: flex;
  align-items: baseline;
  gap: 32px;
  padding: 24px 0;
  border-bottom: 1px solid var(--surface-border);
}

.rhythm-time {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent);
  min-width: 120px;
  flex-shrink: 0;
}

.rhythm-action {
  color: var(--fg-muted);
  font-size: 1rem;
}

/* CLOSING */
.closing {
  padding: 140px 10%;
  background: var(--bg-warm);
  text-align: center;
}

.closing-content {
  max-width: 640px;
  margin: 0 auto;
}

.closing h2 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

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

/* FOOTER */
.site-footer {
  padding: 40px 10%;
  background: var(--bg);
  border-top: 1px solid var(--surface-border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--fg);
}

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

/* MOBILE */
@media (max-width: 768px) {
  .hero {
    padding: 60px 6% 40px;
    min-height: auto;
    padding-top: 100px;
  }
  
  .hero-stats {
    gap: 24px;
    margin-top: 48px;
  }
  
  .stat-num {
    font-size: 1.6rem;
  }

  .features {
    padding: 80px 6%;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .feature-card--large {
    grid-column: span 1;
  }

  .rhythm {
    padding: 80px 6%;
  }
  
  .rhythm-item {
    flex-direction: column;
    gap: 8px;
  }
  
  .rhythm-time {
    min-width: auto;
  }

  .closing {
    padding: 80px 6%;
  }
  
  .site-footer {
    padding: 32px 6%;
  }
}