:root {
  --brand-blue: #2E75B6;
  --brand-slate: #0F172A;
  --brand-muted: #475569;
  --brand-bg: #F8FAFC;
  --grad-green: #6EE7B7;
  --grad-blue: #3B82F6;
  --grad-violet: #8B5CF6;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--brand-slate);
  background: #ffffff;
  -webkit-font-smoothing: antialiased;
}

.gradient-text {
  background: linear-gradient(90deg, var(--grad-green) 0%, var(--grad-blue) 50%, var(--grad-violet) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.gradient-bg {
  background: linear-gradient(135deg, var(--grad-green) 0%, var(--grad-blue) 50%, var(--grad-violet) 100%);
}

.gradient-border {
  position: relative;
}
.gradient-border::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1.5px;
  background: linear-gradient(135deg, var(--grad-green), var(--grad-blue), var(--grad-violet));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.btn-primary {
  background: var(--brand-slate);
  color: #fff;
  padding: 0.875rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: transform 0.15s ease, background 0.15s ease;
}
.btn-primary:hover {
  background: #1E293B;
  transform: translateY(-1px);
}

.btn-secondary {
  background: #fff;
  color: var(--brand-slate);
  padding: 0.875rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  border: 1px solid #E2E8F0;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.btn-secondary:hover {
  border-color: var(--brand-slate);
  transform: translateY(-1px);
}

.nav-link {
  color: var(--brand-muted);
  font-weight: 500;
  transition: color 0.15s ease;
  position: relative;
}
.nav-link:hover, .nav-link.active {
  color: var(--brand-slate);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  background: linear-gradient(90deg, var(--grad-green), var(--grad-blue), var(--grad-violet));
  border-radius: 2px;
}

.card {
  background: #fff;
  border: 1px solid #E2E8F0;
  border-radius: 1rem;
  padding: 2rem;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
  border-color: #CBD5E1;
  transform: translateY(-2px);
  box-shadow: 0 10px 30px -15px rgba(15, 23, 42, 0.15);
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(135deg, var(--grad-blue), var(--grad-violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.bg-soft {
  background: var(--brand-bg);
}

.hex-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.06;
  background-image:
    radial-gradient(circle at 20% 30%, var(--grad-green) 0%, transparent 40%),
    radial-gradient(circle at 80% 60%, var(--grad-violet) 0%, transparent 40%),
    radial-gradient(circle at 50% 90%, var(--grad-blue) 0%, transparent 40%);
}

.check-icon {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  color: var(--grad-blue);
  margin-top: 0.2rem;
}

details > summary {
  list-style: none;
  cursor: pointer;
}
details > summary::-webkit-details-marker { display: none; }
details[open] summary .faq-icon { transform: rotate(45deg); }
.faq-icon { transition: transform 0.2s ease; }

footer a:hover { color: #fff; }

@media (max-width: 768px) {
  .mobile-hide { display: none; }
  .stat-number { font-size: 2.25rem; }
}