:root {
  color-scheme: light dark;
  --bg: #f4f4f7;
  --surface: rgba(255, 255, 255, 0.76);
  --text: #111114;
  --muted: #64646d;
  --line: rgba(17, 17, 20, 0.1);
  --accent: #0a84ff;
  --shadow: 0 24px 80px rgba(18, 24, 40, 0.12);
}

* { box-sizing: border-box; }

html {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% 0%, rgba(10, 132, 255, 0.16), transparent 34rem),
    radial-gradient(circle at 92% 10%, rgba(91, 33, 182, 0.12), transparent 30rem),
    var(--bg);
}

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

.shell {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 64px;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 2px 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 12px;
  color: white;
  background: linear-gradient(145deg, #2997ff, #0062d9);
  box-shadow: 0 10px 24px rgba(10, 132, 255, 0.28);
}

.nav-links { display: flex; gap: 18px; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 0.92rem; }

.card {
  border: 1px solid rgba(255, 255, 255, 0.54);
  border-radius: 30px;
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(24px) saturate(140%);
  -webkit-backdrop-filter: blur(24px) saturate(140%);
}

.hero { padding: clamp(32px, 7vw, 72px); }

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(2.5rem, 8vw, 5.5rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.lede {
  max-width: 680px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2.5vw, 1.3rem);
  line-height: 1.55;
}

.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.chip {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.5);
  font-size: 0.9rem;
  font-weight: 600;
}

.document { padding: clamp(28px, 6vw, 64px); }
.document h1 { font-size: clamp(2.2rem, 6vw, 4.2rem); }
.document h2 { margin: 42px 0 12px; font-size: 1.35rem; letter-spacing: -0.02em; }
.document p, .document li { color: var(--muted); line-height: 1.7; }
.document strong { color: var(--text); }
.document ul { padding-left: 1.25rem; }
.meta { margin: 18px 0 36px; color: var(--muted); }

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

.feature { padding: 24px; }
.feature h2 { margin: 0 0 8px; font-size: 1.06rem; }
.feature p { margin: 0; color: var(--muted); line-height: 1.55; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 30px 4px 0;
  color: var(--muted);
  font-size: 0.85rem;
}

footer div { display: flex; gap: 16px; }

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0c;
    --surface: rgba(31, 31, 35, 0.76);
    --text: #f7f7f9;
    --muted: #aaaab3;
    --line: rgba(255, 255, 255, 0.11);
    --shadow: 0 24px 80px rgba(0, 0, 0, 0.36);
  }
  .chip { background: rgba(255, 255, 255, 0.06); }
}

@media (max-width: 700px) {
  .features { grid-template-columns: 1fr; }
  .nav-links { gap: 12px; }
  .nav-links a:first-child { display: none; }
  footer { flex-direction: column; }
}