:root {
  --space: #060a19;
  --deep: #0c1430;
  --line: #1d2850;
  --star: #e9edf8;
  --dim: #98a2c4;
  --gold: #e8b86a;
  --gold-soft: rgba(232, 184, 106, 0.16);
  --display: "Bricolage Grotesque", system-ui, sans-serif;
  --body: "Atkinson Hyperlegible", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { background: var(--space); color-scheme: dark; }

body {
  margin: 0;
  background:
    radial-gradient(1100px 600px at 85% -10%, rgba(80, 104, 200, 0.18), transparent 60%),
    radial-gradient(700px 500px at -10% 40%, rgba(232, 184, 106, 0.06), transparent 60%),
    var(--space);
  color: var(--star);
  font: 17px/1.65 var(--body);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--gold); text-underline-offset: 3px; }
a:hover { color: #f3cf91; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 4px; }

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

/* header */
.top { display: flex; align-items: center; justify-content: space-between; padding-top: 28px; padding-bottom: 28px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--star); text-decoration: none; font: 600 22px/1 var(--display); letter-spacing: -0.01em; }
.brand-mark { width: 30px; height: 30px; border-radius: 50%; background: radial-gradient(circle at 35% 35%, #fff4d9 0 8%, var(--gold) 20%, #6a4f9e 62%, transparent 64%); box-shadow: 0 0 22px rgba(232, 184, 106, 0.45); }
.top nav a { color: var(--dim); text-decoration: none; margin-left: 22px; font-size: 15px; }
.top nav a:hover { color: var(--star); }

/* hero */
.hero { display: grid; grid-template-columns: 1fr 1.05fr; gap: 48px; align-items: center; padding-top: 40px; padding-bottom: 72px; }
.hero h1 { font: 700 clamp(42px, 6vw, 76px)/0.98 var(--display); letter-spacing: -0.035em; margin: 0 0 24px; max-width: 11ch; }
.hero p.lead { color: var(--dim); font-size: 19px; max-width: 44ch; margin: 0 0 32px; }
.play { display: inline-flex; flex-direction: column; padding: 14px 22px; border: 1px solid var(--line); border-radius: 14px; background: var(--deep); }
.play strong { font: 600 17px/1.2 var(--display); }
.play span { color: var(--dim); font-size: 14px; }

/* phones */
.phones { display: flex; justify-content: center; gap: 18px; perspective: 1400px; }
.phone { flex: 0 0 31%; max-width: 200px; margin: 0; }
.phone .screen { aspect-ratio: 9 / 19.5; border-radius: 26px; overflow: hidden; border: 3px solid #1a2240; background: var(--deep); box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.8), 0 0 40px -10px rgba(120, 140, 255, 0.25); }
.phone:nth-child(1) { transform: translateY(28px) rotate(-4deg); }
.phone:nth-child(3) { transform: translateY(28px) rotate(4deg); }
.phone img { width: 100%; height: 100%; object-fit: cover; display: block; }
.phone figcaption { font-size: 12px; color: var(--dim); margin-top: 10px; text-align: center; line-height: 1.35; }

.starfield { width: 100%; height: 100%; background:
  radial-gradient(1px 1px at 20% 30%, #fff, transparent),
  radial-gradient(1px 1px at 70% 20%, #cfd8ff, transparent),
  radial-gradient(1.5px 1.5px at 40% 70%, #fff, transparent),
  radial-gradient(1px 1px at 85% 60%, #ffe7b8, transparent),
  radial-gradient(1px 1px at 10% 85%, #fff, transparent),
  radial-gradient(120px 160px at 50% 45%, rgba(120, 90, 200, 0.35), transparent 70%),
  var(--deep); }

/* sections */
section { padding: 56px 0; border-top: 1px solid var(--line); }
section h2 { font: 600 30px/1.15 var(--display); letter-spacing: -0.02em; margin: 0 0 10px; }
section > .wrap > p.sub { color: var(--dim); margin: 0 0 32px; max-width: 60ch; }

.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.tile { margin: 0; }
.tile a { display: block; aspect-ratio: 3 / 4; border-radius: 12px; overflow: hidden; background: var(--deep); }
.tile img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.4s ease; }
.tile a:hover img { transform: scale(1.04); }
.tile figcaption { font-size: 13px; margin-top: 8px; line-height: 1.4; }
.tile figcaption span { display: block; color: var(--dim); font-size: 12px; }
.empty { color: var(--dim); padding: 24px; border: 1px dashed var(--line); border-radius: 12px; }

.sources { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.sources h3 { font: 600 20px/1.2 var(--display); margin: 0 0 6px; }
.sources p { color: var(--dim); margin: 0; font-size: 15px; }
.sources .license { color: var(--gold); font-size: 14px; margin-bottom: 8px; display: block; }
.note { color: var(--dim); font-size: 14px; margin-top: 36px; max-width: 70ch; }

/* long text pages */
.doc { max-width: 720px; padding: 24px 0 80px; }
.doc h1 { font: 700 44px/1.05 var(--display); letter-spacing: -0.03em; margin: 16px 0 8px; }
.doc .updated { color: var(--dim); margin: 0 0 40px; }
.doc h2 { font: 600 23px/1.25 var(--display); margin: 44px 0 10px; }
.doc p, .doc li { color: #cdd3e8; }
.doc ul { padding-left: 22px; }
.doc li { margin: 6px 0; }
.doc table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 12px 0; }
.doc th, .doc td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.doc th { color: var(--star); font-weight: 700; }

footer { border-top: 1px solid var(--line); padding: 32px 0 48px; color: var(--dim); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 28px; justify-content: space-between; }
footer a { color: var(--dim); }

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; gap: 40px; padding-top: 16px; }
  .sources { grid-template-columns: 1fr; gap: 24px; }
  .grid { grid-template-columns: repeat(3, 1fr); }
  .top nav a { margin-left: 14px; }
}
@media (max-width: 480px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .phones { gap: 10px; }
  .grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  .tile img { transition: none; }
}