*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  background: #000000;
  color: #ffffff;
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
}

.board {
  width: min(40rem, 100%);
  display: grid;
  gap: 1.25rem;
}

.greeting {
  margin: 0;
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-align: center;
}

.lead,
.notice,
.error,
.empty,
.list time {
  color: #c9c9c9;
}

.lead {
  margin: 0;
  text-align: center;
  line-height: 1.6;
}

.notice,
.error {
  margin: 0;
  text-align: center;
}

.error {
  color: #ff8a8a;
}

.form {
  display: grid;
  gap: 0.85rem;
}

label {
  display: grid;
  gap: 0.4rem;
  font-size: 0.95rem;
}

input {
  padding: 0.7rem 0.8rem;
  border: 1px solid #444;
  border-radius: 0.4rem;
  background: #111;
  color: #fff;
  font: inherit;
}

button {
  padding: 0.75rem 1rem;
  border: 0;
  border-radius: 0.4rem;
  background: #fff;
  color: #000;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.list li {
  padding: 0.85rem 0;
  border-top: 1px solid #2a2a2a;
  display: grid;
  gap: 0.25rem;
}

.list time {
  font-size: 0.8rem;
}