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

body {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(to bottom, #0a0a1a, #1a1a3a);
    font-family: Arial, sans-serif;
    overflow: hidden;
}

/* 游戏画布样式 */
canvas {
    display: block;
    border: 3px solid #4fc3f7;
    border-radius: 8px;
    box-shadow: 0 0 30px rgba(79, 195, 247, 0.5);
}

/* 游戏提示文字 */
#gameStatus {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: 24px;
    text-shadow: 0 0 10px #ff0;
    display: none;
}