:root {
  color-scheme: light;
  font-family: Inter, system-ui, sans-serif;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: #eef3f9;
  color: #0f172a;
}
main {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 24px;
}
section {
  width: min(100%, 440px);
  padding: clamp(24px, 6vw, 40px);
  border: 1px solid #dbe4ef;
  border-radius: 12px;
  background: #ffffffc7;
}
img {
  display: block;
  width: 140px;
  height: auto;
  margin-bottom: 40px;
}
h1 {
  margin: 0;
  font-size: clamp(28px, 6vw, 36px);
  line-height: 1.2;
}
p {
  color: #475569;
  line-height: 1.6;
}
.sign-in {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 48px;
  margin-top: 16px;
  border-radius: 8px;
  background: #2563eb;
  color: white;
  font-weight: 650;
  text-decoration: none;
}
.sign-in:hover {
  background: #1d4ed8;
}
.sign-in:focus-visible {
  outline: 3px solid #0f172a;
  outline-offset: 3px;
}
.help {
  font-size: 14px;
}
#failed {
  display: none;
  color: #b91c1c;
}
#failed:target {
  display: block;
}