:root {
  color-scheme: dark;
  --bg: #070812;
  --panel: #101321;
  --line: #242a3d;
  --text: #f3f5fb;
  --muted: #9199ad;
  --cyan: #55d9ff;
  --violet: #a68cff;
  --green: #65e6a5;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 20% 0%, rgba(85, 217, 255, .09), transparent 32rem),
    radial-gradient(circle at 90% 30%, rgba(166, 140, 255, .08), transparent 28rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, sans-serif;
  min-height: 100vh;
}
header {
  height: 68px;
  padding: 0 max(24px, calc((100vw - 1120px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand { color: var(--cyan); text-decoration: none; font-weight: 800; letter-spacing: .12em; }
.header-actions { display: flex; align-items: center; gap: 12px; color: var(--muted); font: 12px "JetBrains Mono", monospace; }
main { max-width: 1120px; margin: auto; padding: 72px 24px; }
.hero { max-width: 760px; margin-bottom: 96px; }
.hero h1 { font-size: clamp(44px, 7vw, 76px); line-height: 1.02; letter-spacing: -.055em; margin: 14px 0 24px; }
.hero h1 span { color: var(--cyan); }
.hero > p:last-child { color: var(--muted); font-size: 18px; line-height: 1.7; max-width: 680px; }
.eyebrow { color: var(--violet); font: 500 12px "JetBrains Mono", monospace; letter-spacing: .15em; }
.notice { border: 1px solid #795b24; background: #211b10; padding: 16px; border-radius: 10px; margin-bottom: 32px; color: #ffd58a; }
.notice.neutral { border-color: #294e60; background: #0c1b24; color: #a7e8ff; }
.section-heading { display: flex; align-items: end; justify-content: space-between; margin-bottom: 20px; }
h2 { font-size: 30px; margin: 6px 0 0; }
.catalog { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.dataset { background: rgba(16, 19, 33, .92); border: 1px solid var(--line); border-radius: 14px; padding: 22px; }
.dataset h3 { margin: 8px 0 10px; font-size: 21px; }
.dataset p { color: var(--muted); line-height: 1.55; }
.facts { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 22px 0; }
.fact { border-top: 1px solid var(--line); padding-top: 9px; }
.fact small { display: block; color: var(--muted); font: 10px "JetBrains Mono", monospace; text-transform: uppercase; }
.fact strong { display: block; margin-top: 5px; font-size: 14px; }
.actions { display: flex; gap: 9px; }
button, .button {
  border: 0;
  border-radius: 8px;
  padding: 11px 15px;
  font: 600 13px Inter, sans-serif;
  cursor: pointer;
  background: var(--cyan);
  color: #061016;
}
button:disabled { opacity: .45; cursor: not-allowed; }
.secondary { background: transparent; color: var(--text); border: 1px solid var(--line); }
.status { color: var(--green); font: 12px "JetBrains Mono", monospace; min-height: 20px; }
.how { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 90px; border-top: 1px solid var(--line); padding-top: 30px; }
.how div { display: flex; gap: 12px; color: var(--muted); line-height: 1.45; font-size: 14px; }
.how b { color: var(--cyan); font: 12px "JetBrains Mono", monospace; }
.muted { color: var(--muted); }
.toast { position: fixed; right: 24px; bottom: 24px; max-width: 420px; padding: 15px 18px; border: 1px solid var(--line); background: #15192a; border-radius: 10px; box-shadow: 0 16px 50px #0009; }
code { font-family: "JetBrains Mono", monospace; }
@media (max-width: 720px) {
  main { padding-top: 48px; }
  .hero { margin-bottom: 64px; }
  .how { grid-template-columns: 1fr 1fr; }
  #network { display: none; }
}