:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #172033;
  background: #f3f6fb;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 20% 10%, rgba(56, 116, 255, .09), transparent 32rem),
    linear-gradient(145deg, #f8faff, #eef2f8);
}
.shell { width: min(92vw, 440px); padding: 48px 0 28px; }
.card {
  background: #fff;
  border: 1px solid #e4e9f2;
  border-radius: 16px;
  box-shadow: 0 20px 55px rgba(31, 48, 78, .12);
  padding: 38px;
}
.brand { display: flex; align-items: center; gap: 11px; font-weight: 700; color: #263653; }
.mark {
  width: 34px; height: 34px; display: grid; place-items: center;
  color: #fff; background: #356df3; border-radius: 9px; letter-spacing: -.05em;
}
h1 { margin: 30px 0 8px; font-size: 25px; letter-spacing: -.02em; }
.lead { margin: 0 0 28px; color: #69758b; font-size: 14px; }
label { display: block; font-size: 13px; font-weight: 650; margin: 0 0 8px; }
input {
  width: 100%; height: 46px; border: 1px solid #cfd7e5; border-radius: 8px;
  padding: 0 13px; font: inherit; font-size: 14px; outline: none; background: #fff;
}
input:focus { border-color: #356df3; box-shadow: 0 0 0 3px rgba(53, 109, 243, .14); }
.password-label { margin-top: 20px; }
.error {
  margin: 16px 0 0; padding: 11px 12px; color: #9e2f2f; background: #fff2f2;
  border: 1px solid #ffd1d1; border-radius: 7px; font-size: 13px; line-height: 1.4;
}
button {
  width: 100%; height: 46px; margin-top: 22px; border: 0; border-radius: 8px;
  color: #fff; background: #356df3; font: inherit; font-size: 14px; font-weight: 700; cursor: pointer;
}
button:hover { background: #285cdd; }
button:disabled { opacity: .65; cursor: wait; }
.support { margin: 26px 0 0; color: #7b8597; text-align: center; font-size: 12px; line-height: 1.5; }
footer { margin-top: 24px; text-align: center; color: #98a1b1; font-size: 11px; }
@media (max-width: 520px) { .card { padding: 28px 22px; } .shell { padding-top: 24px; } }