:root {
  color-scheme: dark;
  font-family: "Segoe UI", system-ui, sans-serif;
  --ink: #f6f9fd;
  --muted: #b9c9db;
  --accent: #ffcf00;
  --line: #284662;
}
html { min-block-size: 100%; background: #061a2e; }
body { margin: 0; color: var(--ink); }
.entry {
  min-block-size: 100svh;
  box-sizing: border-box;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 22px;
  padding: 32px 20px;
  background: radial-gradient(ellipse at 50% 25%, #153e61 0%, #0a2642 40%, #061a2e 78%);
}
.card {
  position: relative;
  box-sizing: border-box;
  inline-size: min(100%, 416px);
  padding: 34px 34px 22px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #0c2945;
  box-shadow: 0 22px 70px #0004;
}
.card::before {
  content: "";
  position: absolute;
  inset-block-start: -1px;
  inset-inline-start: 34px;
  inline-size: 40px;
  block-size: 3px;
  border-radius: 4px;
  background: var(--accent);
}
.brand { display: block; inline-size: 180px; block-size: auto; }
.eyebrow { margin: 27px 0 10px; font-size: 10px; font-weight: 650; letter-spacing: .17em; color: #9db6ce; }
h1 { margin: 0; font-size: 30px; font-weight: 650; line-height: 1.15; letter-spacing: -.025em; }
.intro { margin: 15px 0 25px; font-size: 13px; line-height: 1.65; color: var(--muted); }
.sign-in {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-block-size: 48px;
  padding-inline: 16px;
  box-sizing: border-box;
  border: 1px solid #fff;
  border-radius: 11px;
  color: #102b45;
  background: #f6f9fd;
  font-size: 13px;
  font-weight: 650;
  text-decoration: none;
  transition: background-color .15s ease;
}
.sign-in:hover { background: #dfebf7; }
.sign-in:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
.microsoft { flex-shrink: 0; }
.arrow { margin-inline-start: auto; }
.security { display: flex; align-items: center; justify-content: center; gap: 6px; margin: 12px 0 23px; color: #a9c2d7; font-size: 10px; }
.help { border-block-start: 1px solid var(--line); padding-block-start: 5px; color: var(--muted); }
summary { min-block-size: 42px; display: flex; align-items: center; justify-content: space-between; cursor: pointer; list-style: none; font-size: 11px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-size: 17px; color: #9db6ce; }
details[open] summary::after { content: "−"; }
.help p { font-size: 12px; line-height: 1.6; margin: 0 0 12px; }
footer { color: #89a4bd; font-size: 10px; letter-spacing: .035em; }
footer span { padding-inline: 7px; }
@media (max-width: 380px) {
  .entry { padding-inline: 14px; }
  .card { padding-inline: 24px; }
  h1 { font-size: 28px; }
  .wide-break { display: none; }
}
@media (prefers-reduced-motion: reduce) { .sign-in { transition: none; } }
@media (forced-colors: active) { .sign-in { border: 1px solid ButtonText; } }