:root {
  --bg: #fbfaf7;
  --fg: #1b1b1a;
  --muted: #5d5b56;
  --line: #d9d6cf;
  --accent: #1f4d3a;
  --accent-fg: #ffffff;
  --field: #ffffff;
  --pop: #c2410c;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141413;
    --fg: #ecebe7;
    --muted: #a6a39c;
    --line: #3a3936;
    --accent: #7fc4a2;
    --accent-fg: #0f1a14;
    --field: #1d1d1b;
    --pop: #f3a56b;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
.wrap { max-width: 700px; margin: 0 auto; padding: 16px 16px 40px; }
header.site { font-size: 14px; color: var(--muted); padding-bottom: 18px; line-height: 1.3; }
header.site .mark { display: block; font-size: 22px; color: var(--accent); }
header.site .tag { display: block; font-size: 17px; font-weight: 600; color: var(--pop); }
h1 { font-size: 32px; line-height: 1.15; letter-spacing: -0.01em; margin: 0 0 14px; }
.sub { font-size: 19px; margin: 0 0 10px; }
.promise { font-size: 19px; font-weight: 600; margin: 0 0 12px; }
.proof { font-size: 15px; color: var(--muted); margin: 0 0 14px; }
.cta { font-size: 17px; margin: 0; }
h2 { font-size: 20px; margin: 28px 0 10px; }

form { display: grid; gap: 12px; margin-top: 10px; }

/* Step 2 (thank-you page): radio groups. */
fieldset.choices { border: 0; margin: 0 0 6px; padding: 0; display: grid; gap: 2px; }
fieldset.choices legend { font-size: 15px; font-weight: 600; padding: 0 0 6px; }
fieldset.choices label { display: flex; align-items: center; gap: 10px; font-weight: 400; font-size: 16px; padding: 5px 0; cursor: pointer; }
fieldset.choices input[type=radio] { width: 18px; height: 18px; margin: 0; padding: 0; accent-color: var(--accent); flex: none; }
fieldset.choices input[type=text] { margin-top: 4px; }
.actions { display: flex; align-items: center; gap: 20px; }
.actions button { min-width: 120px; }
label { display: grid; gap: 6px; font-size: 15px; font-weight: 600; }
.opt { font-weight: 400; color: var(--muted); }
input, select {
  font: inherit;
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--field);
  color: var(--fg);
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
button {
  font: inherit;
  font-weight: 600;
  font-size: 18px;
  padding: 15px 16px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-fg);
  cursor: pointer;
}
button:disabled { opacity: 0.6; cursor: default; }
.consent { font-size: 13px; color: var(--muted); margin: 0; }
.status { font-size: 14px; min-height: 1em; margin: 0; }
a { color: var(--accent); }
footer.site { margin-top: 32px; font-size: 13px; color: var(--muted); }
[hidden] { display: none !important; }

@media (min-width: 720px) {
  h1 { font-size: 46px; }
  header.site .tag { font-size: 19px; }
  .sub, .promise { font-size: 20px; }
  .proof { font-size: 16px; }
  .wrap { padding-top: 40px; }
}

/* Phones (v3 one-screen rule): the sizes the handoff names. */
@media (max-width: 420px) {
  h1 { font-size: 30px; }
  .sub, .promise { font-size: 17px; }
  .proof { font-size: 14px; }
  .cta { font-size: 16px; }
}