:root {
  color-scheme: dark;
  --ink: #f4f7ff;
  --muted: #b5c0d7;
  --line: rgba(190, 206, 255, .17);
  --surface: rgba(16, 25, 57, .72);
  --blue: #6fd4ff;
  --violet: #a896ff;
  --bg: #070b1d;
}

* { box-sizing: border-box; }

html { background: var(--bg); }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(900px 520px at 8% -10%, rgba(61, 132, 255, .35), transparent 70%),
    radial-gradient(740px 500px at 100% 5%, rgba(140, 93, 255, .28), transparent 65%),
    var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  line-height: 1.55;
}

a { color: inherit; text-underline-offset: .18em; }

.shell { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 82px;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 750;
  letter-spacing: -.02em;
}

.mark {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--blue), var(--violet));
  color: #11162b;
  font-size: 18px;
  box-shadow: 0 5px 20px rgba(111, 212, 255, .26);
}

nav { display: flex; gap: 20px; font-size: .94rem; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { color: var(--ink); }

.hero { padding: 74px 0 92px; max-width: 780px; }
.eyebrow { margin: 0 0 16px; color: var(--blue); font-size: .85rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
h1 { margin: 0; max-width: 740px; font-size: clamp(2.9rem, 7vw, 5.7rem); line-height: .98; letter-spacing: -.065em; }
.lede { margin: 26px 0 0; max-width: 650px; color: var(--muted); font-size: clamp(1.1rem, 2vw, 1.32rem); }

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 19px;
  border: 1px solid var(--line);
  border-radius: 13px;
  color: var(--ink);
  background: rgba(255, 255, 255, .06);
  text-decoration: none;
  font-weight: 650;
}
.button.primary { border-color: transparent; background: linear-gradient(135deg, #60d2ff, #9b8dff); color: #101527; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; padding-bottom: 90px; }
.card, .document {
  border: 1px solid var(--line);
  border-radius: 19px;
  background: var(--surface);
  box-shadow: 0 18px 70px rgba(0, 0, 0, .16);
}
.card { padding: 25px; }
.card .symbol { display: block; margin-bottom: 15px; color: var(--blue); font-size: 1.45rem; }
h2 { margin: 0; font-size: 1.16rem; letter-spacing: -.025em; }
.card p { margin: 9px 0 0; color: var(--muted); font-size: .96rem; }

.document { max-width: 800px; margin: 50px auto 78px; padding: clamp(25px, 5vw, 56px); }
.document h1 { font-size: clamp(2.35rem, 5vw, 3.8rem); }
.document h2 { margin: 34px 0 8px; font-size: 1.25rem; }
.document p, .document li { color: var(--muted); }
.document strong { color: var(--ink); }
.document ul { padding-left: 20px; }
.updated { margin-top: 14px; color: var(--muted); font-size: .92rem; }
.support-intro { margin-bottom: 32px; }
.faq { border-top: 1px solid var(--line); padding: 21px 0; }
.faq h2 { font-size: 1.05rem; }
.faq p { margin: 8px 0 0; }

footer { border-top: 1px solid var(--line); padding: 26px 0 38px; color: var(--muted); font-size: .88rem; }
footer .shell { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 14px; }
footer a { color: var(--muted); }

@media (max-width: 650px) {
  header { min-height: 68px; }
  nav { gap: 13px; font-size: .84rem; }
  .grid { grid-template-columns: 1fr; }
  .hero { padding: 55px 0 62px; }
}