:root {
  color-scheme: light dark;
  --bg: #f4fbfe;
  --surface: #ffffff;
  --text: #102027;
  --muted: #52666f;
  --primary: #086f92;
  --soft: #dff5fc;
  --border: #c6e4ee;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #07171d;
    --surface: #10242c;
    --text: #e8f7fb;
    --muted: #a9c4ce;
    --primary: #63d5ff;
    --soft: #153846;
    --border: #27505f;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: 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(--primary); }

.shell {
  width: min(760px, calc(100% - 36px));
  margin: 0 auto;
}

header { padding: 28px 0 10px; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 800;
  text-decoration: none;
}

.brand img { width: 42px; height: 42px; }

main { padding: 46px 0 72px; }

h1 {
  max-width: 680px;
  margin: 0 0 18px;
  font-size: clamp(2.4rem, 8vw, 4.5rem);
  line-height: 1.03;
  letter-spacing: -0.045em;
}

h2 { margin-top: 34px; line-height: 1.2; }

p, li { color: var(--muted); }

.lede { max-width: 620px; font-size: 1.16rem; }

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.button {
  display: inline-block;
  padding: 12px 18px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.button.primary { background: var(--primary); color: var(--bg); border-color: var(--primary); }

.card {
  margin-top: 40px;
  padding: clamp(22px, 5vw, 34px);
  border: 1px solid var(--border);
  border-radius: 28px;
  background: var(--surface);
}

.eyebrow { color: var(--primary); font-weight: 800; }

footer { padding: 26px 0 40px; border-top: 1px solid var(--border); }