:root {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #17211b;
  background: #f6f2ea;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: max(24px, env(safe-area-inset-top)) 20px max(24px, env(safe-area-inset-bottom));
}

main {
  width: min(100%, 520px);
  padding: 34px 28px;
  border: 1px solid #d9d5cb;
  border-radius: 28px;
  background: #fff;
  box-shadow: 0 22px 55px rgba(38, 50, 43, 0.1);
}

.brand {
  margin: 0 0 10px;
  color: #23664f;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .08em;
}

h1 {
  margin: 0;
  font-size: clamp(28px, 7vw, 38px);
  line-height: 1.2;
  letter-spacing: -.035em;
}

p {
  margin: 16px 0 0;
  color: #5b6861;
  font-size: 16px;
  line-height: 1.7;
}

.action {
  display: block;
  margin-top: 26px;
  padding: 17px 20px;
  border-radius: 18px;
  background: #23664f;
  color: #fff;
  text-align: center;
  text-decoration: none;
  font-size: 17px;
  font-weight: 800;
}

.action[hidden] { display: none; }
.action:focus-visible { outline: 3px solid #77ae98; outline-offset: 4px; }
.note { font-size: 13px; }
.error { color: #b34d42; }