:root {
  --paper: #faf7f2; --ink: #24211c; --muted: #6b6459;
  --accent: #206a4e; --rule: #e2dbcf; --card: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root { --paper: #191713; --ink: #ece7de; --muted: #a39a8c;
          --accent: #4fae85; --rule: #35302a; --card: #211e19; }
}
* { box-sizing: border-box; margin: 0; }
body { background: var(--paper); color: var(--ink);
  font: 17px/1.6 ui-serif, "Iowan Old Style", Georgia, serif; }
main { max-width: 46rem; margin: 0 auto; padding: 4rem 1.25rem 3rem; }
.mark { font: 700 0.8rem/1 ui-monospace, "SF Mono", Menlo, monospace;
  letter-spacing: 0.35em; color: var(--accent); }
h1 { font-size: 2.4rem; line-height: 1.15; margin: 0.75rem 0 1rem; }
.lede { color: var(--muted); font-size: 1.1rem; }
section { margin-top: 3.5rem; }
.steps { display: grid; gap: 1.5rem; }
.step { border-top: 2px solid var(--rule); padding-top: 1rem; }
.step .n { font: 700 0.9rem/1 ui-monospace, Menlo, monospace; color: var(--accent); }
.step h2 { font-size: 1.15rem; margin: 0.25rem 0; }
.step p, .cap p { color: var(--muted); font-size: 0.98rem; }
.caps { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1rem; }
.cap { background: var(--card); border: 1px solid var(--rule); border-radius: 8px; padding: 1rem 1.1rem; }
.cap h3 { font-size: 1rem; margin-bottom: 0.35rem; }
.signup { border: 2px solid var(--accent); border-radius: 10px; padding: 1.5rem; }
.signup h2 { font-size: 1.3rem; }
.signup p { color: var(--muted); margin: 0.4rem 0 1rem; }
form { display: flex; gap: 0.6rem; flex-wrap: wrap; }
input[type="email"] { flex: 1 1 14rem; padding: 0.65rem 0.8rem; font: inherit;
  border: 1px solid var(--rule); border-radius: 6px; background: var(--paper); color: var(--ink); }
button { padding: 0.65rem 1.2rem; font: inherit; font-weight: 700; cursor: pointer;
  background: var(--accent); color: var(--paper); border: 0; border-radius: 6px; }
.hp { position: absolute; left: -9999px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
#ea-msg { margin-top: 0.75rem; min-height: 1.5em; }
footer { margin-top: 3.5rem; border-top: 2px solid var(--rule); padding-top: 1.25rem;
  color: var(--muted); font-size: 0.9rem; }
footer a { color: var(--accent); }