:root {
  --bg: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: #16161f;
  --fg: #e8e8ed;
  --fg-muted: #8888a0;
  --fg-dim: #55556a;
  --accent: #6ee7b7;
  --accent-dim: rgba(110, 231, 183, 0.12);
  --accent-glow: rgba(110, 231, 183, 0.06);
  --border: rgba(255,255,255,0.06);
  --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);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 120px 24px 80px;
}

.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: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(110, 231, 183, 0.2);
  padding: 8px 20px;
  border-radius: 100px;
  margin-bottom: 40px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 28px;
}

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

.hero-gradient {
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 900px;
  background: radial-gradient(ellipse at center, rgba(110, 231, 183, 0.07) 0%, transparent 65%);
  pointer-events: none;
  z-index: 1;
}

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

.problem-inner {
  max-width: 860px;
  margin: 0 auto;
}

.problem-label,
.capabilities-label,
.difference-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 32px;
}

.problem 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;
  color: #fff;
  margin-bottom: 24px;
}

.problem > .problem-inner > p {
  font-size: 1.1rem;
  color: var(--fg-muted);
  max-width: 640px;
  margin-bottom: 64px;
  line-height: 1.7;
}

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

.stat {
  text-align: center;
  padding: 40px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}

.stat-label {
  display: block;
  font-size: 0.85rem;
  color: var(--fg-dim);
  letter-spacing: 0.02em;
}

/* ===== CAPABILITIES ===== */
.capabilities {
  padding: 120px 24px;
}

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

.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 12px;
}

.capability {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 44px 36px;
  transition: border-color 0.3s ease;
}

.capability:hover {
  border-color: rgba(110, 231, 183, 0.2);
}

.capability-number {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}

.capability h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 12px;
}

.capability p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* ===== DIFFERENCE ===== */
.difference {
  padding: 120px 24px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.comparison {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  margin-top: 12px;
}

.comparison-col {
  padding: 48px 40px;
}

.comparison-divider {
  width: 1px;
  background: var(--border);
}

.comparison-col h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.comparison-col.old h3 {
  color: var(--fg-dim);
}

.comparison-col.new h3 {
  color: var(--accent);
}

.comparison-col ul {
  list-style: none;
}

.comparison-col ul li {
  font-size: 0.95rem;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.comparison-col ul li:last-child {
  border-bottom: none;
}

.comparison-col.old ul li {
  color: var(--fg-dim);
}

.comparison-col.new ul li {
  color: var(--fg);
}

/* ===== CLOSING ===== */
.closing {
  padding: 140px 24px;
  text-align: center;
}

.closing-inner {
  max-width: 700px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 20px;
}

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

/* ===== FOOTER ===== */
.site-footer {
  padding: 40px 24px;
  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: 1rem;
  font-weight: 600;
  color: var(--fg-muted);
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero { min-height: 80vh; padding: 100px 20px 60px; }
  .problem, .capabilities, .difference, .closing { padding: 80px 20px; }
  .problem-stats { grid-template-columns: 1fr; gap: 16px; }
  .capabilities-grid { grid-template-columns: 1fr; }
  .comparison { grid-template-columns: 1fr; }
  .comparison-divider { width: 100%; height: 1px; }
  .comparison-col { padding: 32px 24px; }
  .capability { padding: 32px 24px; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 2.2rem; }
  .hero-sub { font-size: 1rem; }
  .stat-number { font-size: 1.8rem; }
}