:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f7f8fb;
  color: #172033;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  min-height: 100vh;
  background: #f7f8fb;
}
.gate-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.gate-panel {
  width: min(100%, 420px);
  border: 1px solid #dfe5ee;
  border-radius: 8px;
  background: #ffffff;
  padding: 32px;
  box-shadow: 0 18px 50px rgba(23, 32, 51, 0.08);
}
.gate-brand {
  margin: 0 0 22px;
  color: #003366;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0;
}
h1 {
  margin: 0;
  font-size: 28px;
  line-height: 1.15;
  letter-spacing: 0;
}
.gate-copy {
  margin: 10px 0 24px;
  color: #526075;
  font-size: 15px;
  line-height: 1.5;
}
.gate-form {
  display: grid;
  gap: 12px;
}
label {
  color: #28354a;
  font-size: 13px;
  font-weight: 700;
}
input {
  width: 100%;
  min-height: 46px;
  border: 1px solid #c9d3e2;
  border-radius: 6px;
  padding: 10px 12px;
  color: #172033;
  font: inherit;
}
input:focus {
  border-color: #003366;
  outline: 3px solid rgba(0, 51, 102, 0.16);
}
button {
  min-height: 46px;
  border: 0;
  border-radius: 6px;
  background: #003366;
  color: #ffffff;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
}
button:hover {
  background: #00264d;
}
.gate-error {
  margin: 0;
  color: #b42318;
  font-size: 13px;
  font-weight: 700;
}
@media (max-width: 480px) {
  .gate-shell {
    padding: 16px;
    place-items: start center;
  }
  .gate-panel {
    margin-top: 56px;
    padding: 24px;
  }
  h1 {
    font-size: 24px;
  }
}