:root {
  color-scheme: light dark;
  --paper: #f4f0e8;
  --ink: #18211d;
  --muted: #647169;
  --line: rgba(24, 33, 29, 0.16);
  --accent: #18785d;
  --card: rgba(255, 255, 255, 0.66);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 12% 12%, rgba(38, 151, 112, 0.15), transparent 28rem),
    var(--paper);
  color: var(--ink);
  font-family: ui-rounded, "SF Pro Rounded", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }

.shell {
  width: min(760px, calc(100% - 2rem));
  margin: 0 auto;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
}

.brand {
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}

nav { display: flex; gap: 1rem; font-size: 0.92rem; }
nav a { color: var(--muted); text-decoration: none; }
nav a[aria-current="page"] { color: var(--ink); font-weight: 700; }

main { padding: 4.5rem 0 5rem; }

.eyebrow {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

h1 {
  max-width: 700px;
  margin: 0.4rem 0 1rem;
  font-size: clamp(2.5rem, 8vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.lede {
  max-width: 620px;
  color: var(--muted);
  font-size: clamp(1.05rem, 3vw, 1.3rem);
}

.card {
  margin-top: 2.5rem;
  padding: clamp(1.25rem, 5vw, 2.4rem);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1.4rem;
  box-shadow: 0 18px 50px rgba(24, 33, 29, 0.06);
  backdrop-filter: blur(14px);
}

h2 { margin: 2.2rem 0 0.45rem; font-size: 1.3rem; letter-spacing: -0.02em; }
h2:first-child { margin-top: 0; }
p, ul { margin: 0.5rem 0 1rem; }
li + li { margin-top: 0.4rem; }

.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.75rem; }
.button {
  display: inline-block;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  font-weight: 750;
  text-decoration: none;
}

.button.secondary { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.meta { color: var(--muted); font-size: 0.9rem; }

footer {
  padding: 1.5rem 0 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #101713;
    --ink: #eff6f1;
    --muted: #a6b3aa;
    --line: rgba(239, 246, 241, 0.14);
    --accent: #62d6ad;
    --card: rgba(26, 37, 31, 0.72);
  }
}