:root {
  --bg: #05070d;
  --bg2: #0b1222;
  --text: #e6ebf5;
  --muted: #9aa6bd;
  --accent: #ff9a5a;
  --line: rgba(255, 255, 255, 0.12);
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
  background: radial-gradient(ellipse at 70% 20%, var(--bg2), var(--bg) 70%) fixed;
  color: var(--text);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Static star field: many small radial gradients, no images, no scripts */
.sky {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 10% 15%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 25% 40%, #cfe0ff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 40% 8%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 55% 30%, #ffe9cf 50%, transparent 51%),
    radial-gradient(1px 1px at 70% 55%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 85% 12%, #cfe0ff 50%, transparent 51%),
    radial-gradient(1px 1px at 92% 70%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 15% 80%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 33% 65%, #ffe9cf 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 62% 88%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 78% 38%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 5% 50%, #cfe0ff 50%, transparent 51%);
  background-size: 420px 420px;
  opacity: 0.8;
}

.sky2 {
  background-size: 260px 260px;
  background-position: 130px 70px;
  opacity: 0.45;
}

@media (prefers-reduced-motion: no-preference) {
  .sky { animation: twinkle 7s ease-in-out infinite alternate; }
  .sky2 { animation-duration: 11s; }
  .planet-orbit { animation: orbit 22s linear infinite; transform-origin: 200px 200px; }
}

@keyframes twinkle { from { opacity: 0.55; } to { opacity: 0.9; } }
@keyframes orbit { to { transform: rotate(360deg); } }

main {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
  padding: 64px 20px 40px;
}

header { text-align: center; }

.eyebrow {
  color: var(--accent);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.8rem;
  margin: 0 0 8px;
}

h1 {
  font-size: clamp(2.8rem, 9vw, 5rem);
  font-weight: 300;
  letter-spacing: 0.02em;
  margin: 0;
}

.lead {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 34em;
  margin: 12px auto 0;
}

.system {
  margin: 36px auto 8px;
  width: min(360px, 80vw);
}

.system svg { width: 100%; height: auto; display: block; }

.orbit {
  fill: none;
  stroke: var(--line);
  stroke-width: 1;
  stroke-dasharray: 3 6;
}

.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin: 28px 0;
}

.facts div {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.03);
}

.num {
  display: block;
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--text);
}

.lbl {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.4;
}

.text h2 {
  font-weight: 400;
  font-size: 1.4rem;
  margin: 32px 0 8px;
}

.text p { margin: 0 0 14px; }

footer {
  margin-top: 48px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
}