:root {
  --bg: #06070a;
  --bg-elevated: #0d0f14;
  --glass: rgba(255,255,255,0.04);
  --glass-border: rgba(255,255,255,0.08);
  --text-primary: #f4f5f7;
  --text-secondary: #a3a8b4;
  --accent-cyan: #4fd1ff;
  --accent-violet: #8b6bff;
  --gradient-accent: linear-gradient(135deg, var(--accent-cyan), var(--accent-violet));
  --radius-md: 14px;
  --radius-lg: 24px;
  --space-1: 8px; --space-2: 16px; --space-3: 24px; --space-4: 40px; --space-5: 64px; --space-6: 96px;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1200px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: '';
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(circle at 20% 10%, rgba(79,209,255,0.12), transparent 40%),
    radial-gradient(circle at 80% 30%, rgba(139,107,255,0.12), transparent 40%);
}

a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; display: block; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--space-3); }

h1, h2, h3 { font-weight: 700; line-height: 1.2; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); margin-bottom: var(--space-2); }
h3 { font-size: 1.25rem; margin-bottom: var(--space-1); }
p { color: var(--text-secondary); }

.glass-card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(16px);
  padding: var(--space-3);
}

.btn {
  display: inline-flex; align-items: center; gap: var(--space-1);
  padding: 12px 24px; border-radius: 999px; font-weight: 600;
  border: 1px solid var(--glass-border); cursor: pointer;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--gradient-accent); color: #06070a; border: none; }
.btn-primary:hover { filter: brightness(1.08); }

.site-nav { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(12px); background: rgba(6,7,10,0.7); border-bottom: 1px solid var(--glass-border); transition: padding .2s ease; }
.site-nav.condensed { padding-block: 4px; }
.nav-inner { max-width: var(--max-width); margin: 0 auto; padding: var(--space-2) var(--space-3); display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.nav-logo { font-weight: 800; font-size: 1.25rem; }
.nav-links { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.nav-links a { color: var(--text-secondary); font-size: .95rem; }
.nav-links a:hover { color: var(--text-primary); }

.section { padding-block: var(--space-6); }
.grid { display: grid; gap: var(--space-3); }
.grid-cols-2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.feature-card svg, .protocol-card svg { width: 32px; height: 32px; color: var(--accent-cyan); margin-bottom: var(--space-2); }

.site-footer { border-top: 1px solid var(--glass-border); padding: var(--space-5) 0 var(--space-3); margin-top: var(--space-6); }
.footer-grid { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--space-3); display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: var(--space-3); }
.footer-col ul { list-style: none; margin-top: var(--space-1); }
.footer-col li { margin-bottom: 6px; }
.footer-col a { color: var(--text-secondary); font-size: .9rem; }
.footer-bottom { max-width: var(--max-width); margin: var(--space-4) auto 0; padding: var(--space-2) var(--space-3) 0; border-top: 1px solid var(--glass-border); display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: var(--space-2); color: var(--text-secondary); font-size: .85rem; }

.faq-item { border-bottom: 1px solid var(--glass-border); padding: var(--space-2) 0; }
.faq-item h3 { font-size: 1.05rem; }

@media (max-width: 640px) {
  .nav-links { display: none; }
}

.table-scroll { overflow-x: auto; }

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.comparison-table thead {
  background: var(--glass);
  border-bottom: 1px solid var(--glass-border);
}

.comparison-table th {
  text-align: left;
  font-weight: 600;
  color: var(--text-primary);
  padding: var(--space-2);
  font-size: .95rem;
}

.comparison-table td {
  color: var(--text-secondary);
  padding: var(--space-2);
  font-size: .9rem;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

.comparison-table tbody th {
  color: var(--accent-cyan);
  font-weight: 600;
}

@media (max-width: 768px) {
  .comparison-table th,
  .comparison-table td {
    padding: var(--space-1) var(--space-2);
    font-size: .85rem;
  }
}