:root {
  --bg: #0a0f0a;
  --bg-subtle: #111a11;
  --fg: #e8ede8;
  --fg-muted: #8a9a8a;
  --accent: #4ade80;
  --accent-dim: #22c55e;
  --accent-glow: rgba(74, 222, 128, 0.15);
  --border: rgba(74, 222, 128, 0.12);
  --card-bg: rgba(17, 26, 17, 0.7);
  --font-display: 'Syne', 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-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
}

/* ===== HERO ===== */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 6rem 2rem 4rem;
  overflow: hidden;
}

.hero-inner {
  max-width: 800px;
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--border);
  padding: 0.5rem 1.5rem;
  border-radius: 100px;
  margin-bottom: 2.5rem;
  background: var(--accent-glow);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

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

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

.hero-gradient-orb {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(74, 222, 128, 0.08) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 1;
}

/* ===== PHILOSOPHY ===== */
.philosophy {
  padding: 6rem 2rem;
  border-top: 1px solid var(--border);
}

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

.philosophy-label,
.systems-label,
.edge-label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.philosophy h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 3rem;
  max-width: 700px;
}

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.philosophy-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  transition: border-color 0.3s;
}

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

.card-number {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
}

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

/* ===== SYSTEMS ===== */
.systems {
  padding: 6rem 2rem;
  background: var(--bg-subtle);
}

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

.systems h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 3rem;
}

.systems-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.system-block {
  padding: 2.5rem;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--bg);
  transition: transform 0.3s, border-color 0.3s;
}

.system-block:hover {
  transform: translateY(-2px);
  border-color: var(--accent-dim);
}

.system-icon {
  font-size: 1.8rem;
  color: var(--accent);
  margin-bottom: 1rem;
}

.system-block h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.system-block p {
  font-size: 0.92rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* ===== EDGE ===== */
.edge {
  padding: 6rem 2rem;
  border-top: 1px solid var(--border);
}

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

.edge-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.edge-left h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.edge-stat {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
}

.edge-stat:last-child {
  border-bottom: none;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.88rem;
  color: var(--fg-muted);
}

/* ===== CLOSING ===== */
.closing {
  padding: 8rem 2rem;
  text-align: center;
  background: var(--bg-subtle);
  position: relative;
}

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

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.closing-sub {
  font-size: 1rem;
  color: var(--fg-muted);
  line-height: 1.8;
  max-width: 580px;
  margin: 0 auto;
}

/* ===== FOOTER ===== */
.site-footer {
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
}

.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: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.footer-note {
  font-size: 0.8rem;
  color: var(--fg-muted);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .philosophy-grid {
    grid-template-columns: 1fr;
  }
  .systems-grid {
    grid-template-columns: 1fr;
  }
  .edge-split {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .footer-inner {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
  }
  .hero {
    min-height: 70vh;
    padding: 4rem 1.5rem 3rem;
  }
  .philosophy,
  .systems,
  .edge {
    padding: 4rem 1.5rem;
  }
  .closing {
    padding: 5rem 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2.2rem;
  }
  .stat-value {
    font-size: 2rem;
  }
}