:root {
  --paper: #f7f3ec;
  --ink: #243d49;
  --text: #26323a;
  --muted: #67737a;
  --white: #fffdfa;
  --line: rgba(36, 61, 73, .16);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}
a { color: inherit; }
.site-header, .shell {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
  text-align: center;
}
.site-header { padding: 18px 0 14px; }
.brand {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.45rem;
  letter-spacing: .01em;
  text-decoration: none;
}
.shell { padding: 8px 0 26px; }
h1 {
  margin: 0 0 12px;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.5rem, 5.5vw, 4.5rem);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -.04em;
  text-wrap: balance;
}
.description {
  max-width: 1020px;
  margin: 0 auto 24px;
  color: #536169;
  font-size: 1.05rem;
  text-wrap: pretty;
}
.card-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  gap: 24px;
  width: min(720px, 100%);
  margin: 0 auto 26px;
}
.card-pair img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 24px;
  box-shadow: 0 18px 50px rgba(52, 44, 34, .12);
}
.signup-form { max-width: 560px; margin: 0 auto; text-align: left; }
.signup-form label { color: var(--ink); font-size: .9rem; font-weight: 600; }
.email-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  margin-top: 6px;
}
input[type="email"] {
  width: 100%;
  min-width: 0;
  border: 1px solid rgba(36, 61, 73, .25);
  border-radius: 14px;
  padding: 12px 15px;
  background: var(--white);
  color: var(--text);
  font: inherit;
}
button {
  min-height: 50px;
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--ink);
  color: var(--white);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}
button:hover { background: #19313c; }
input:focus-visible, button:focus-visible, a:focus-visible {
  outline: 3px solid #95aebb;
  outline-offset: 3px;
}
.feedback { margin: 14px 0 0; font-size: .85rem; color: var(--muted); }
.feedback a { text-underline-offset: 3px; }
.feedback a[aria-disabled="true"] { cursor: default; }

@media (max-width: 580px) {
  .site-header, .shell { width: calc(100% - 32px); }
  .site-header { padding: 16px 0 12px; }
  .description { font-size: 1rem; margin-bottom: 20px; }
  .card-pair { grid-template-columns: 1fr; width: min(360px, 100%); gap: 20px; margin-bottom: 22px; }
  .card-pair img { border-radius: 22px; }
  .email-row { grid-template-columns: 1fr; }
}