* {
  box-sizing: border-box;
}
body {
  font-family: system-ui, sans-serif;
  margin: 0;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  color: #eef4ff;
  background: #101b2c;
}
header,
footer {
  padding: 28px clamp(16px, 6vw, 88px);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}
.wordmark {
  font-size: 23px;
  font-weight: 700;
  letter-spacing: -0.04em;
}
.byline,
footer {
  color: #a9bbd2;
  font-size: 12px;
}
main {
  flex: 1;
  width: min(100%, 720px);
  margin: 0 auto;
  padding: 32px clamp(16px, 6vw, 88px) 56px;
}
h1 {
  font-size: clamp(32px, 6vw, 48px);
  letter-spacing: -0.03em;
  margin: 0 0 16px;
}
h2 {
  font-size: 18px;
  margin: 28px 0 8px;
}
p,
li {
  font-size: 16px;
  line-height: 1.6;
  color: #c4d2e4;
}
form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 28px;
  max-width: 420px;
}
form[hidden] {
  display: none;
}
label {
  font-weight: 600;
}
label.check {
  font-weight: 400;
  display: flex;
  gap: 8px;
  align-items: flex-start;
}
input[type="tel"],
input[inputmode="numeric"] {
  font: inherit;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid #405776;
  background: #0b1422;
  color: #eef4ff;
}
button {
  font: inherit;
  font-weight: 600;
  padding: 12px 16px;
  border-radius: 10px;
  border: 0;
  background: #88b8ff;
  color: #0b1422;
  cursor: pointer;
}
button.danger {
  background: #ff8f8f;
}
button:disabled {
  opacity: 0.6;
  cursor: progress;
}
#status {
  min-height: 1.6em;
  font-weight: 600;
}
a {
  color: #c0d8ff;
  text-underline-offset: 4px;
}
footer {
  border-top: 1px solid #2b3b51;
  flex-wrap: wrap;
}
footer nav {
  display: flex;
  gap: 24px;
}