:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #080b10;
  color: #f4f7fa;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 20% 15%, rgba(82, 181, 75, .16), transparent 32rem),
    radial-gradient(circle at 85% 85%, rgba(31, 120, 180, .12), transparent 30rem),
    #080b10;
}

.shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem 1.25rem;
}

.panel {
  width: min(100%, 25rem);
  padding: 2.5rem;
  border: 1px solid rgba(255,255,255,.09);
  border-radius: 1.25rem;
  background: rgba(18, 23, 31, .92);
  box-shadow: 0 1.5rem 5rem rgba(0,0,0,.45);
}

.mark {
  width: 3.2rem;
  height: 3.2rem;
  display: grid;
  place-items: center;
  margin-bottom: 1.7rem;
  border-radius: .9rem;
  background: linear-gradient(145deg, #6cc04a, #2f8d37);
  box-shadow: 0 .7rem 2rem rgba(71, 174, 64, .23);
}

.mark span {
  width: 0;
  height: 0;
  margin-left: .18rem;
  border-top: .62rem solid transparent;
  border-bottom: .62rem solid transparent;
  border-left: 1rem solid white;
}

.eyebrow {
  margin: 0 0 .45rem;
  color: #72c958;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .16em;
}

h1 {
  margin: 0;
  font-size: 2rem;
  line-height: 1.2;
  font-weight: 650;
}

.subtitle {
  margin: .65rem 0 2rem;
  color: #9da7b3;
  line-height: 1.55;
}

.field {
  height: 3.2rem;
  display: flex;
  align-items: center;
  margin: 0 0 .9rem;
  padding: 0 1rem;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: .65rem;
  background: #0c1016;
  color: #727d89;
  font-size: .92rem;
}

button {
  width: 100%;
  height: 3.2rem;
  margin-top: .35rem;
  border: 0;
  border-radius: .65rem;
  background: #459e3f;
  color: white;
  font: inherit;
  font-weight: 650;
  opacity: .58;
  cursor: not-allowed;
}

.notice {
  margin: 1.3rem 0 0;
  color: #7d8792;
  font-size: .78rem;
  line-height: 1.5;
  text-align: center;
}

@media (max-width: 30rem) {
  .panel { padding: 2rem 1.4rem; }
}