body {
  margin: 0;
  background: #090a0b;
  color: #f7f8f8;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  display: grid;
  place-items: center;
  min-height: 100vh;
}
.card {
  width: min(380px, calc(100vw - 32px));
  padding: 30px;
  border: 1px solid #292b2f;
  border-radius: 14px;
  background: #111214;
  box-sizing: border-box;
}
h1 { font-size: 21px; margin: 0 0 8px; }
.sub { color: #90959e; font-size: 14px; margin-bottom: 24px; }
input, button {
  width: 100%;
  height: 46px;
  border-radius: 8px;
  box-sizing: border-box;
  font-size: 15px;
}
input {
  border: 1px solid #303238;
  background: #18191c;
  color: white;
  padding: 0 12px;
  margin-bottom: 10px;
}
button {
  border: 0;
  background: #7170ff;
  color: white;
  font-weight: 650;
}