* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: #2c3e50;
  font-family: "Microsoft YaHei", sans-serif;
  color: #ecf0f1;
}

h1 {
  margin-bottom: 12px;
  letter-spacing: 4px;
}

#status {
  margin-bottom: 14px;
  font-size: 18px;
  height: 24px;
}

.board-wrap {
  position: relative;
  background: #dcb35c;
  padding: 20px;
  border-radius: 6px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

canvas {
  display: block;
  cursor: pointer;
}

.btns {
  margin-top: 16px;
  display: flex;
  gap: 12px;
}

button {
  padding: 8px 22px;
  font-size: 15px;
  border: none;
  border-radius: 4px;
  background: #e67e22;
  color: #fff;
  cursor: pointer;
  transition: background 0.2s;
}

button:hover {
  background: #d35400;
}