:root {
  color-scheme: dark;
  font-family: Inter, "Segoe UI", sans-serif;
  color: #e6f0f3;
  background: #0b1318;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
a {
  color: inherit;
  text-decoration: none;
}
header,
main,
footer {
  width: min(1080px, calc(100% - 48px));
  margin: auto;
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 0;
  border-bottom: 1px solid #25353e;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 17px;
}
.brand strong {
  font-weight: 400;
  color: #81bdf5;
}
.mark {
  display: grid;
  place-items: center;
  background: #1068cc;
  border-radius: 11px;
  width: 39px;
  height: 39px;
  font-size: 13px;
  font-weight: 750;
}
.preview {
  font-size: 11px;
  letter-spacing: 0.04em;
  border: 1px solid #3b454b;
  padding: 6px 10px;
  border-radius: 20px;
  color: #b7c7d0;
}
.intro {
  padding: 62px 0 34px;
  max-width: 760px;
}
.eyebrow {
  font-size: 10px;
  letter-spacing: 0.18em;
  color: #8eabbc;
}
.dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #68d6ae;
  margin-right: 8px;
}
h1 {
  font-size: clamp(38px, 5.5vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.045em;
  font-weight: 650;
  margin: 22px 0;
}
p {
  line-height: 1.65;
}
.lead {
  font-size: 18px;
  color: #bfd0d8;
  margin: 0;
}
.note {
  font-size: 13px;
  color: #7f9aa9;
}
.choices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.choices article {
  border: 1px solid #2d404d;
  border-radius: 15px;
  padding: 27px;
  background: linear-gradient(135deg, #142530, #101b22);
  display: flex;
  flex-direction: column;
}
.number {
  font-size: 10px;
  letter-spacing: 0.15em;
  color: #7ca8c5;
}
h2 {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 17px 0 9px;
}
.choices p {
  font-size: 13px;
  color: #a9bdc9;
  margin: 0 0 23px;
  max-width: 410px;
}
.button {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 1px solid #364b58;
  border-radius: 8px;
  background: #1c2d38;
  color: #e6f0f3;
  padding: 13px 15px;
  font-size: 13px;
  font-weight: 600;
  width: 100%;
  margin-top: auto;
}
.primary {
  background: #126dc9;
  border-color: #3484d2;
}
.primary:hover {
  background: #197cdf;
}
.button:disabled {
  color: #849aa8;
  cursor: not-allowed;
}
a:focus-visible {
  outline: 2px solid #80bfff;
  outline-offset: 4px;
}
small {
  display: block;
  color: #7e96a5;
  font-size: 11px;
  line-height: 1.6;
  margin-top: 12px;
}
.steps {
  padding: 25px 0;
}
.steps h2 {
  font-size: 16px;
}
.steps ol {
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.steps li {
  border-top: 1px solid #2a3a45;
  padding-top: 15px;
}
.steps strong {
  display: block;
  font-size: 13px;
  margin-bottom: 8px;
}
.steps span {
  font-size: 12px;
  color: #8ca6b5;
  line-height: 1.7;
}
aside {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: #101d25;
  border: 1px solid #253b48;
  border-radius: 10px;
  padding: 20px 24px;
  font-size: 12px;
  line-height: 1.8;
  color: #90a9b9;
}
aside strong {
  font-weight: 500;
  color: #cadbe4;
}
aside a {
  color: #81bdf5;
  white-space: nowrap;
}
footer {
  display: flex;
  justify-content: space-between;
  padding: 30px 0;
  font-size: 11px;
  color: #627f90;
}
@media (max-width: 650px) {
  header,
  main,
  footer {
    width: calc(100% - 32px);
  }
  .intro {
    padding-top: 38px;
  }
  .choices {
    grid-template-columns: 1fr;
  }
  .steps ol {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  aside,
  footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }
  .preview {
    font-size: 10px;
  }
}