:root {
  color-scheme: dark;
  --bg: #090b15;
  --panel: #141724;
  --text: #f7f4ee;
  --muted: #a9a8b4;
  --cyan: #7de8ff;
  --violet: #8f83ff;
  --lime: #d9ff68;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: ui-rounded, "SF Pro Rounded", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 88% 4%, rgb(125 232 255 / 18%), transparent 28rem),
    radial-gradient(circle at 8% 92%, rgb(143 131 255 / 18%), transparent 30rem),
    var(--bg);
}

a { color: inherit; }

.shell {
  width: min(920px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 72px;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 900;
  text-decoration: none;
}

.mark { color: var(--cyan); font-size: 35px; line-height: 1; }

.nav-links { display: flex; gap: 18px; color: var(--muted); font-weight: 700; }
.nav-links a { text-decoration: none; }
.nav-links a:hover { color: var(--text); }

.eyebrow {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 999px;
  color: #080a12;
  background: var(--cyan);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .08em;
}

h1 {
  max-width: 760px;
  margin: 24px 0;
  font-size: clamp(48px, 8vw, 88px);
  line-height: .96;
  letter-spacing: -.055em;
}

h2 { margin-top: 0; font-size: 26px; letter-spacing: -.02em; }
h3 { margin-bottom: 6px; }
p, li { color: var(--muted); line-height: 1.7; }
.lead { max-width: 680px; font-size: 20px; }

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 34px 0 64px; }
.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  padding: 0 20px;
  border: 1px solid rgb(255 255 255 / 12%);
  border-radius: 16px;
  background: var(--panel);
  font-weight: 850;
  text-decoration: none;
}
.button.primary { color: #080a12; background: var(--violet); border-color: transparent; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.card, .prose {
  border: 1px solid rgb(255 255 255 / 10%);
  border-radius: 24px;
  background: rgb(20 23 36 / 88%);
  box-shadow: 0 22px 60px rgb(0 0 0 / 22%);
}
.card { padding: 24px; }
.card:nth-child(2) { border-color: rgb(217 255 104 / 25%); }
.card:nth-child(3) { border-color: rgb(143 131 255 / 30%); }
.prose { padding: clamp(24px, 5vw, 48px); }
.prose h2 { margin-top: 42px; }
.prose h2:first-child { margin-top: 0; }
.prose strong { color: var(--text); }

footer {
  margin-top: 52px;
  padding-top: 24px;
  border-top: 1px solid rgb(255 255 255 / 10%);
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 720px) {
  nav { margin-bottom: 50px; }
  .grid { grid-template-columns: 1fr; }
  .nav-links { font-size: 13px; }
}