body {
  font-family: system-ui, sans-serif;
  margin: 0;
  background: #f6f7f9;
}

.wrap {
  max-width: 560px;
  margin: 0 auto;
  padding: 16px;
}

h1, h2 {
  margin: 12px 0;
}

.row {
  margin: 12px 0;
}

.lbl {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
}

.input {
  width: 100%;
  padding: 12px;
  font-size: 16px;
  border-radius: 10px;
  border: 1px solid #ccc;
}

.hint {
  font-size: 13px;
  opacity: 0.75;
  margin-top: 6px;
}

.status {
  font-size: 13px;
  margin: 8px 0;
  opacity: 0.9;
}

.grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin: 14px 0;
}

.cell {
  padding: 18px 0;
  border-radius: 12px;
  border: 1px solid #ccc;
  background: #fff;
  font-size: 18px;
  cursor: pointer;
}

.cell.on {
  background: #111;
  color: #fff;
  border-color: #111;
}

.card {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 12px;
  padding: 12px;
  margin-top: 12px;
}

.total {
  font-size: 20px;
  font-weight: 800;
  margin-top: 8px;
}

.btn {
  width: 100%;
  padding: 14px;
  font-size: 16px;
  border-radius: 12px;
  border: none;
  background: #2563eb;
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}

.btn2 {
  padding: 10px 12px;
  font-size: 14px;
  border-radius: 12px;
  border: 1px solid #ccc;
  background: #fff;
  cursor: pointer;
}

.linkrow a {
  color: #2563eb;
  text-decoration: none;
  font-weight: 700;
}

.leaderboard {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 12px;
  overflow: hidden;
}

.lbrow {
  display: grid;
  grid-template-columns: 48px 1fr 90px;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid #eee;
  align-items: center;
}

.lbrow:first-child {
  border-top: none;
}

.rank {
  font-weight: 800;
}

.name {
  font-weight: 800;
}

.meta {
  font-size: 12px;
  opacity: 0.75;
}

.score {
  text-align: right;
  font-size: 18px;
  font-weight: 900;
}

.fineprint {
  margin-top: 16px;
  font-size: 12px;
  opacity: 0.7;
}