:root {
  color-scheme: dark;
  --bg: #120b28;
  --bg2: #241052;
  --panel: rgba(255, 255, 255, 0.08);
  --line: rgba(255, 255, 255, 0.16);
  --text: #ffffff;
  --muted: #d9ccff;
  --cyan: #1ff7ff;
  --pink: #ff4fb8;
  --gold: #ffe35f;
  --green: #35ff94;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 10%, rgba(31, 247, 255, 0.28), transparent 30%),
    radial-gradient(circle at 86% 18%, rgba(255, 79, 184, 0.22), transparent 28%),
    linear-gradient(180deg, #7a22ef 0%, var(--bg2) 36%, var(--bg) 100%);
}

a {
  color: var(--cyan);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.shell,
.doc {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
}

.shell {
  padding: 56px 0 32px;
}

.doc {
  padding: 46px 0 38px;
  line-height: 1.65;
}

.hero {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(14, 8, 36, 0.52);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
}

.brand-mark {
  display: grid;
  grid-template-columns: repeat(2, 34px);
  gap: 7px;
  width: max-content;
  margin-bottom: 22px;
}

.brand-mark span {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  box-shadow: 0 0 18px currentColor;
}

.brand-mark span:nth-child(1) { background: var(--cyan); color: var(--cyan); }
.brand-mark span:nth-child(2) { background: var(--pink); color: var(--pink); }
.brand-mark span:nth-child(3) { background: var(--gold); color: var(--gold); }
.brand-mark span:nth-child(4) { background: var(--green); color: var(--green); }

.eyebrow {
  margin: 0 0 10px;
  color: var(--gold);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 13px;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(42px, 9vw, 76px);
  line-height: 0.95;
  text-shadow: 0 3px 0 #05020f, 0 0 28px rgba(31, 247, 255, 0.55);
}

h2 {
  margin: 34px 0 10px;
  font-size: 25px;
}

h3 {
  margin: 0 0 10px;
  font-size: 21px;
}

.lead {
  max-width: 680px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.55;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  font-weight: 800;
}

.button.primary {
  color: #07131d;
  border: 0;
  background: linear-gradient(135deg, var(--green), var(--cyan));
}

.panel,
.card,
.support-box {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--panel);
  box-shadow: 0 20px 56px rgba(0, 0, 0, 0.18);
}

.panel {
  margin-top: 18px;
  padding: 26px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 18px;
}

.card {
  display: block;
  padding: 22px;
  color: var(--text);
}

.card p,
.panel p,
.doc p,
.doc li {
  color: var(--muted);
}

.facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 22px 0 0;
}

.facts div {
  min-width: 0;
  padding: 14px;
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.18);
}

.facts dt {
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.facts dd {
  margin: 8px 0 0;
  overflow-wrap: anywhere;
}

.doc {
  max-width: 760px;
}

.doc h1 {
  font-size: clamp(38px, 8vw, 62px);
}

.updated {
  color: var(--gold);
  font-weight: 800;
}

.support-box {
  padding: 20px;
  margin: 22px 0;
}

.footer {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 36px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--muted);
}

@media (max-width: 720px) {
  .shell {
    padding-top: 28px;
  }

  .hero,
  .panel,
  .card {
    border-radius: 16px;
  }

  .grid,
  .facts {
    grid-template-columns: 1fr;
  }
}