:root {
  color-scheme: dark;
  --bg: #090b12;
  --panel: #111521;
  --panel-2: #171c2b;
  --text: #f7f8fb;
  --muted: #a8afc0;
  --line: #293146;
  --accent: #8d7dff;
  --accent-2: #5de4c7;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 15% 0%, rgba(141, 125, 255, .18), transparent 34rem),
    radial-gradient(circle at 90% 20%, rgba(93, 228, 199, .10), transparent 28rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

a { color: var(--accent-2); }

.shell {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 72px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 0 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
  font-weight: 750;
}

.mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(145deg, var(--accent), #5b48e8);
  box-shadow: 0 12px 30px rgba(91, 72, 232, .35);
  color: white;
  font-size: 19px;
}

nav { display: flex; flex-wrap: wrap; gap: 14px; }
nav a { color: var(--muted); text-decoration: none; font-size: 14px; }
nav a:hover { color: var(--text); }
nav a:focus-visible,
a:focus-visible,
.button:focus-visible {
  outline: 3px solid var(--mint);
  outline-offset: 3px;
}

.hero,
.card {
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(23, 28, 43, .95), rgba(14, 17, 28, .95));
  box-shadow: 0 22px 70px rgba(0, 0, 0, .28);
}

.hero {
  padding: clamp(28px, 5vw, 54px);
  border-radius: 28px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
}

h1 { margin: 0; max-width: 16ch; font-size: clamp(38px, 7vw, 68px); line-height: 1.03; letter-spacing: -.045em; }
h2 { margin: 38px 0 10px; font-size: 24px; line-height: 1.25; letter-spacing: -.02em; }
h3 { margin: 24px 0 8px; font-size: 17px; }
p, li { color: var(--muted); }
.lede { max-width: 64ch; margin: 20px 0 0; font-size: 18px; }
.meta { margin-top: 22px; color: #7f879b; font-size: 13px; }

.content { padding: 8px clamp(2px, 3vw, 22px); }
.card { margin-top: 24px; padding: 24px; border-radius: 20px; }
.card h2 { margin-top: 0; }
ul { padding-left: 22px; }
li + li { margin-top: 8px; }

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 12px;
  background: var(--accent);
  color: #090b12;
  font-weight: 800;
  text-decoration: none;
}
.button.secondary { border: 1px solid var(--line); background: var(--panel-2); color: var(--text); }

footer { padding-top: 36px; color: #737b8f; font-size: 13px; }

@media (max-width: 680px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  h1 { max-width: none; }
}