:root {
  font-family: "Segoe UI", "PingFang SC", sans-serif;
  color: #1a1a1a;
  background: #f4f1ea;
}

body {
  margin: 0;
  padding: 24px;
}

main {
  max-width: 960px;
  margin: 0 auto;
  background: #fff;
  padding: 24px;
  border: 1px solid #d7d0c4;
}

h1, h2 {
  font-weight: 600;
}

label {
  display: block;
  margin: 8px 0;
}

input {
  display: block;
  width: 100%;
  max-width: 420px;
  margin-top: 4px;
  padding: 8px;
}

button {
  margin-top: 8px;
  padding: 8px 16px;
}

.hint {
  color: #5c564c;
}

.error {
  color: #9b1c1c;
}

.ok {
  color: #1f6b3a;
}

.session {
  padding: 8px 0;
  border-bottom: 1px solid #eee;
}

.session a {
  margin-left: 12px;
}