:root {
  color-scheme: light;
  --ink: #10233f;
  --muted: #52627a;
  --line: #dce5ef;
  --surface: #ffffff;
  --soft: #f4f8fc;
  --brand: #175fa7;
  --brand-dark: #0c3f79;
  --accent: #51b8c6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: linear-gradient(180deg, #eef7fb 0, #f8fbfe 260px, #fff 520px);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

header, main, footer {
  width: min(900px, calc(100% - 36px));
  margin-inline: auto;
}

header {
  padding: 52px 0 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--brand-dark);
  font-size: 1.15rem;
  font-weight: 750;
  letter-spacing: .01em;
  text-decoration: none;
}

.mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 14px;
  color: white;
  background: linear-gradient(145deg, var(--brand), var(--accent));
  font-weight: 850;
}

main {
  padding: 36px clamp(22px, 5vw, 58px) 52px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: color-mix(in srgb, var(--surface) 96%, transparent);
  box-shadow: 0 24px 70px rgba(23, 67, 106, .09);
}

h1 {
  margin: 0 0 8px;
  color: var(--brand-dark);
  font-size: clamp(2rem, 6vw, 3.25rem);
  line-height: 1.1;
}

h2 {
  margin: 2rem 0 .55rem;
  color: var(--brand-dark);
  font-size: 1.25rem;
}

h3 {
  margin: 1.6rem 0 .45rem;
  color: var(--brand-dark);
  font-size: 1.05rem;
}

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

.lede {
  max-width: 680px;
  font-size: 1.08rem;
}

.notice {
  margin: 24px 0;
  padding: 18px 20px;
  border-left: 4px solid var(--accent);
  border-radius: 8px 14px 14px 8px;
  background: var(--soft);
}

.consent-choice {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 12px;
  margin: 24px 0 16px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}

.consent-choice input {
  width: 20px;
  height: 20px;
  margin: 3px 0 0;
}

.consent-choice label { color: var(--ink); }

.evidence {
  margin-top: 36px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.eyebrow {
  margin: 28px 0 4px;
  color: var(--brand);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.message-preview,
.consent-demo {
  margin: 14px 0 24px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--soft);
}

.message-preview p { margin-bottom: 0; }
.consent-demo .notice { margin-top: 0; }
.secondary-demo { color: var(--brand-dark); background: white; }
.caption { margin-bottom: 0; font-size: .9rem; }

a { color: var(--brand); }

button {
  margin: 8px 10px 0 0;
  padding: 12px 18px;
  border: 1px solid var(--brand);
  border-radius: 12px;
  color: white;
  background: var(--brand);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

button + button {
  color: var(--brand-dark);
  background: white;
}

button:disabled { cursor: wait; opacity: .6; }

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 24px;
}

nav a { font-weight: 650; }

footer {
  padding: 28px 0 46px;
  color: var(--muted);
  font-size: .92rem;
}

@media (max-width: 560px) {
  header { padding-top: 30px; }
  main { padding: 28px 20px 38px; border-radius: 18px; }
}

input[type="tel"] { display: block; width: min(100%, 360px); margin: 8px 0; padding: 12px; border: 1px solid var(--line); border-radius: 8px; font: inherit; }