:root {
  --bg: #0a0a0f;
  --bg-subtle: #12121a;
  --surface: #1a1a26;
  --surface-hover: #222233;
  --border: #2a2a3a;
  --fg: #e8e8f0;
  --fg-muted: #8888a0;
  --fg-dim: #5a5a72;
  --accent: #6366f1;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --accent-bright: #818cf8;
  --green: #34d399;
  --green-dim: rgba(52, 211, 153, 0.1);
  --red: #f87171;
  --red-dim: rgba(248, 113, 113, 0.08);
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, 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: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem 2rem 4rem;
  overflow: hidden;
}

.hero-inner {
  max-width: 820px;
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-block;
  padding: 0.4rem 1.2rem;
  background: var(--accent-glow);
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: 100px;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-bright);
  margin-bottom: 2rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--fg) 0%, var(--fg-muted) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 600px;
  margin: 0 auto 3rem;
  line-height: 1.7;
}

.hero-metrics {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  padding: 1.5rem 2.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  display: inline-flex;
}

.metric { text-align: center; }

.metric-value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent-bright);
  line-height: 1.2;
}

.metric-label {
  font-size: 0.78rem;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.metric-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
}

.hero-glow {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
}

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

.contrast-inner {
  max-width: 900px;
  margin: 0 auto;
}

.contrast h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 3rem;
  text-align: center;
}

.contrast-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.contrast-card {
  padding: 2rem;
  border-radius: 16px;
  border: 1px solid var(--border);
}

.contrast-card.old {
  background: var(--red-dim);
  border-color: rgba(248, 113, 113, 0.15);
}

.contrast-card.new {
  background: var(--green-dim);
  border-color: rgba(52, 211, 153, 0.15);
}

.contrast-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.2rem;
}

.contrast-card.old .contrast-label { color: var(--red); }
.contrast-card.new .contrast-label { color: var(--green); }

.contrast-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contrast-card li {
  font-size: 0.95rem;
  color: var(--fg-muted);
  padding-left: 1.4rem;
  position: relative;
}

.contrast-card.old li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 1.5px;
  background: var(--red);
  opacity: 0.6;
}

.contrast-card.new li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.35em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  opacity: 0.5;
}

/* ===== CAPABILITIES ===== */
.capabilities {
  padding: 6rem 2rem;
}

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

.capabilities h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
  text-align: center;
}

.capabilities-sub {
  text-align: center;
  color: var(--fg-muted);
  max-width: 560px;
  margin: 0 auto 3.5rem;
  font-size: 1.05rem;
}

.cap-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.cap-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  transition: border-color 0.2s, background 0.2s;
}

.cap-card:hover {
  background: var(--surface-hover);
  border-color: rgba(99, 102, 241, 0.3);
}

.cap-num {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.75rem;
  letter-spacing: 0.05em;
}

.cap-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  color: var(--fg);
}

.cap-card p {
  font-size: 0.92rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* ===== CLOSING ===== */
.closing {
  padding: 6rem 2rem;
  background: var(--bg-subtle);
  text-align: center;
}

.closing-inner {
  max-width: 680px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.closing-text {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.75;
  margin-bottom: 1.5rem;
}

.closing-accent {
  color: var(--accent-bright);
  font-weight: 500;
  font-size: 1.1rem;
}

/* ===== FOOTER ===== */
.site-footer {
  padding: 3rem 2rem;
  border-top: 1px solid var(--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-size: 1.1rem;
  font-weight: 600;
  color: var(--fg);
}

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

/* ===== MOBILE ===== */
@media (max-width: 768px) {
  .hero { min-height: 70vh; padding: 4rem 1.5rem 3rem; }
  .hero-metrics { flex-direction: column; gap: 1rem; padding: 1.5rem; }
  .metric-divider { width: 40px; height: 1px; }
  .contrast-grid { grid-template-columns: 1fr; }
  .cap-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 0.5rem; text-align: center; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 2rem; }
  .hero-sub { font-size: 1rem; }
  .contrast-card { padding: 1.5rem; }
  .cap-card { padding: 1.5rem; }
}