:root {
  --bg: #0d1117;
  --bg-raised: #161b22;
  --bg-inset: #1c2128;
  --border: #21262d;
  --border-strong: #30363d;
  --text: #e6edf3;
  --text-dim: #7d8590;
  --blue: #58a6ff;
  --blue-strong: #79c0ff;
  --green: #3fb950;
  --amber: #d29922;
  --purple: #a371f7;
  --red: #f85149;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue-strong); text-decoration: none; }
a:hover { text-decoration: underline; }

@keyframes pulse {
  0%, 100% { opacity: 0.15; }
  50%       { opacity: 0.55; }
}
@keyframes ring-pulse {
  0%, 100% { box-shadow: 0 0 5px var(--green); opacity: 0.85; }
  50%       { box-shadow: 0 0 16px var(--green); opacity: 1; }
}
@keyframes node-pulse {
  0%, 100% { opacity: 0.35; r: 2.4; }
  50%       { opacity: 1; r: 3.4; }
}
@keyframes route-travel {
  to { stroke-dashoffset: -40; }
}
@keyframes route-fade {
  0%   { opacity: 0; }
  10%  { opacity: 1; }
  85%  { opacity: 1; }
  100% { opacity: 0; }
}
@keyframes drift {
  0%   { transform: translateY(0px); }
  50%  { transform: translateY(-6px); }
  100% { transform: translateY(0px); }
}

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(13, 17, 23, 0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 17px;
  color: var(--text);
}
.brand:hover { text-decoration: none; }
.brand img { border-radius: 6px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 14px;
}
.nav-links a:not(.nav-cta) { color: var(--text-dim); }
.nav-links a:not(.nav-cta):hover { color: var(--text); text-decoration: none; }

.nav-cta {
  background: var(--blue);
  color: #04101f !important;
  padding: 8px 14px;
  border-radius: 8px;
  font-weight: 600;
}
.nav-cta:hover { text-decoration: none; opacity: 0.88; }

main { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ---------- Hero ---------- */

.hero {
  text-align: center;
  padding: 72px 0 8px;
  position: relative;
}
.hero-logo {
  width: 84px;
  height: 84px;
  border-radius: 20px;
  margin-bottom: 26px;
}
.hero h1 {
  font-size: 40px;
  line-height: 1.22;
  margin: 0 0 18px;
  letter-spacing: -0.01em;
}
.hero-sub {
  max-width: 640px;
  margin: 0 auto 30px;
  color: var(--text-dim);
  font-size: 17px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 9px;
  font-weight: 600;
  font-size: 15px;
}
.btn-primary {
  background: var(--blue);
  color: #04101f !important;
}
.btn-primary:hover { text-decoration: none; opacity: 0.88; }
.btn-disabled {
  background: transparent;
  color: var(--text-dim) !important;
  border: 1px solid var(--border-strong);
  cursor: not-allowed;
}
.btn-secondary {
  background: transparent;
  color: var(--text) !important;
  border: 1px solid var(--border-strong);
}
.btn-secondary:hover { text-decoration: none; border-color: var(--blue-strong); color: var(--blue-strong) !important; }

.hero-endpoints {
  display: flex;
  gap: 10px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-dim);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  margin-bottom: 4px;
}
.dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  margin-right: 5px;
}
.dot-live { background: var(--green); animation: ring-pulse 2.2s ease-in-out infinite; }

/* ---------- Network visualization ---------- */

.network-viz {
  margin: 28px 0 8px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background:
    radial-gradient(ellipse at 50% 0%, rgba(88, 166, 255, 0.08), transparent 60%),
    var(--bg-raised);
  overflow: hidden;
  position: relative;
}
.network-viz svg { display: block; width: 100%; height: auto; }
.network-viz .node-core { fill: var(--text); }
.network-viz .node-dot { fill: var(--green); animation: node-pulse 2.6s ease-in-out infinite; transform-origin: center; }
.network-viz .hub-ring { fill: none; stroke: var(--blue-strong); stroke-opacity: 0.55; }
.network-viz .hub-dot { fill: var(--blue); }
.network-viz .hub-label {
  fill: var(--text-dim);
  font-size: 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.02em;
}
.network-viz .grid-line { stroke: var(--border); stroke-width: 1; }
.network-viz .route-fast {
  stroke: var(--blue);
  stroke-width: 1.4;
  fill: none;
  stroke-dasharray: 5 9;
  animation: route-travel 1.1s linear infinite, route-fade 5s ease-in-out infinite;
}
.network-viz .route-background {
  stroke: var(--amber);
  stroke-width: 1.2;
  fill: none;
  stroke-dasharray: 3 7;
  animation: route-travel 2.6s linear infinite, route-fade 7s ease-in-out infinite;
}
.network-viz .route-mesh {
  stroke: var(--border-strong);
  stroke-width: 1;
  fill: none;
  opacity: 0.6;
}

.viz-legend {
  display: flex;
  gap: 22px;
  justify-content: center;
  flex-wrap: wrap;
  padding: 12px 0 26px;
  font-size: 12px;
  color: var(--text-dim);
}
.viz-legend span { display: inline-flex; align-items: center; gap: 6px; }
.viz-legend .swatch { display: inline-block; width: 14px; height: 2px; border-radius: 1px; }

/* ---------- Live stats strip ---------- */

.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 8px 0 48px;
}
.stat-cell {
  background: var(--bg-raised);
  padding: 18px 16px;
  text-align: center;
}
.stat-value {
  font-size: 24px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  min-height: 30px;
}
.stat-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  margin-top: 4px;
}
.stat-value.is-loading { color: var(--text-dim); }

/* ---------- Sections ---------- */

.section { padding: 52px 0; border-top: 1px solid var(--border); }
.section h2 {
  font-size: 25px;
  margin: 0 0 14px;
}
.section-lead {
  color: var(--text-dim);
  font-size: 16px;
  margin: 0 0 32px;
}
.section-note {
  color: var(--text-dim);
  font-size: 14px;
  margin-top: 28px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-left: 2px solid var(--blue);
  border-radius: var(--radius);
  padding: 20px;
}
.section h3 {
  font-size: 18px;
  margin: 36px 0 14px;
  color: var(--text);
}
.section h3:first-of-type { margin-top: 0; }

.card h3 {
  margin: 0 0 8px;
  font-size: 15px;
  color: var(--blue-strong);
}
.card p {
  margin: 0;
  font-size: 14px;
  color: var(--text-dim);
}

.license-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.badge {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  background: rgba(88, 166, 255, 0.12);
  color: var(--blue-strong);
  border: 1px solid rgba(88, 166, 255, 0.3);
}
.badge-muted {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border-strong);
}

.footer {
  border-top: 1px solid var(--border);
  margin-top: 24px;
}
.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-dim);
  font-size: 13px;
}
.footer-links { display: flex; gap: 18px; }
.footer-disabled { color: var(--text-dim); opacity: 0.6; }

@media (max-width: 760px) {
  .nav-links { gap: 14px; }
  .nav-links a:not(.nav-cta) { display: none; }
  .hero h1 { font-size: 28px; }
  .grid { grid-template-columns: 1fr; }
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  .dot-live, .node-dot, .route-fast, .route-background {
    animation: none !important;
  }
}