* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #1f2937;
  background: #f4f7f9;
}
.wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.panel {
  width: min(560px, 100%);
  background: #fff;
  border: 1px solid #d8e0e7;
  border-radius: 8px;
  padding: 28px;
  box-shadow: 0 10px 30px rgba(31, 41, 55, .08);
}
h1 {
  margin: 0 0 22px;
  font-size: 28px;
  letter-spacing: 0;
}
form, label, .result {
  display: grid;
  gap: 14px;
}
label {
  font-weight: 650;
}
input, select, button, .button {
  width: 100%;
  min-height: 44px;
  border-radius: 6px;
  border: 1px solid #b7c4ce;
  padding: 10px 12px;
  font: inherit;
}
button, .button {
  display: inline-grid;
  place-items: center;
  background: #186b8f;
  color: #fff;
  border-color: #186b8f;
  text-decoration: none;
  font-weight: 700;
  cursor: pointer;
}
.error {
  padding: 12px;
  border-radius: 6px;
  color: #8a1f1f;
  background: #fff0f0;
  border: 1px solid #efb8b8;
}
a { color: #186b8f; }