:root {
  color: #172033;
  background: #f3f6fb;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.card {
  width: min(640px, 100%);
  padding: clamp(24px, 5vw, 48px);
  background: #fff;
  border: 1px solid #dce3ef;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(28, 45, 77, 0.12);
}

h1, h2 { margin: 0 0 14px; line-height: 1.15; }
h1 { font-size: clamp(2rem, 6vw, 3rem); }
h2 { font-size: clamp(1.7rem, 5vw, 2.3rem); }
p, li { line-height: 1.6; }
.intro { color: #46526a; }
.eyebrow {
  margin: 0 0 8px;
  color: #2457d6;
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.notice {
  margin: 24px 0;
  padding: 16px 18px;
  border-left: 4px solid #2457d6;
  border-radius: 8px;
  background: #eef4ff;
}
.notice ul { margin: 10px 0; padding-left: 22px; }
.notice p { margin: 8px 0 0; }

button {
  width: 100%;
  min-height: 50px;
  padding: 12px 18px;
  border: 0;
  border-radius: 10px;
  font: inherit;
  font-weight: 750;
  cursor: pointer;
}
button:focus-visible { outline: 3px solid #8db0ff; outline-offset: 2px; }
button:disabled { cursor: wait; opacity: .6; }
.primary { color: #fff; background: #2457d6; }
.primary:not(:disabled):hover { background: #1744b4; }
.status { min-height: 1.5em; margin-bottom: 0; color: #46526a; font-weight: 650; }
.status.error { color: #ae1f2b; }
[hidden] { display: none !important; }

@media (max-width: 560px) {
  body { padding: 12px; }
  .card { padding: 22px; border-radius: 14px; }
}