:root {
  --ink: #1d2b3a;
  --muted: #55636f;
  --accent: #2e6b5e;
  --accent-dark: #24564b;
  --bg: #ffffff;
  --soft: #f3f6f5;
  --line: #dde3e0;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-size: 18px;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
a { color: var(--accent); }
.top { border-bottom: 1px solid var(--line); }
.bar { display: flex; align-items: center; justify-content: space-between; min-height: 60px; }
.brand { font-weight: 800; font-size: 22px; letter-spacing: 0.04em; color: var(--ink); text-decoration: none; }
nav a { margin-left: 18px; color: var(--muted); text-decoration: none; font-size: 16px; }
nav a:hover { color: var(--accent); }
.hero { padding: 48px 0 16px; }
.kicker { color: var(--accent); font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; font-size: 14px; margin: 0 0 8px; }
h1 { font-size: 34px; line-height: 1.2; margin: 0 0 16px; }
h2 { font-size: 24px; line-height: 1.3; margin: 40px 0 12px; }
h3 { font-size: 19px; margin: 24px 0 6px; }
.lead { font-size: 20px; color: var(--muted); margin: 0 0 24px; }
.facts, .steps { padding-left: 22px; }
.facts li, .steps li { margin: 0 0 10px; }
.button {
  display: inline-block; background: var(--accent); color: #fff; text-decoration: none;
  padding: 12px 22px; border-radius: 6px; font-weight: 700;
}
.button:hover { background: var(--accent-dark); }
.cta { background: var(--soft); border: 1px solid var(--line); border-radius: 8px; padding: 8px 24px 24px; margin: 40px 0; }
.video { background: var(--soft); border: 1px dashed var(--line); border-radius: 8px; padding: 32px 24px; text-align: center; color: var(--muted); }
.small { font-size: 15px; color: var(--muted); }
.foot { border-top: 1px solid var(--line); margin-top: 48px; padding: 16px 0 32px; font-size: 15px; color: var(--muted); }
@media (max-width: 600px) {
  body { font-size: 17px; }
  h1 { font-size: 28px; }
  nav a { margin-left: 12px; }
}
pre { background: var(--soft); border: 1px solid var(--line); border-radius: 6px; padding: 12px 14px; overflow-x: auto; font-size: 14px; line-height: 1.5; }
.kicker a { color: inherit; text-decoration: none; }
.vid { margin: 20px 0 28px; }
.vid video { display: block; width: 100%; border-radius: 8px; background: #000; }
.vid.tall video { max-width: 340px; }
.vid figcaption { margin-top: 8px; font-size: 16px; }
.vid details { font-size: 15px; color: var(--muted); margin-top: 4px; }
.vid summary { cursor: pointer; color: var(--accent); }
.nw { white-space: nowrap; }
.signup label { display: block; font-weight: 600; margin: 4px 0 6px; }
.signup-row { display: flex; gap: 10px; flex-wrap: wrap; }
.signup input[type=email] { flex: 1 1 240px; font: inherit; padding: 11px 14px; border: 1px solid var(--line); border-radius: 6px; }
.signup button { border: 0; cursor: pointer; font: inherit; font-weight: 700; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.signup-msg { color: #a93226; font-weight: 600; }