body {
    margin: 0;
    padding-bottom: 220px; /* 给固定底部的钢琴留出空间 */
    min-height: 100vh;
    background-color: #f0f0f0;
    touch-action: manipulation;
}
.piano-container {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    overflow-x: hidden;
    padding: 20px 0;
}
.piano-keys {
    display: flex;
    position: relative;
    margin: 0 auto;
    height: 200px;
}
@media (max-width: 1200px) {
    .piano-keys {
   overflow-x: hidden;
        transform: none;
        left: 0;
        width: 100%;
        justify-content: center;
    width: 2000px;
    transform: translateX(-1000px);
    left: 50%;
    }
}
.key {
    position: relative;
    cursor: pointer;
    border-radius: 0 0 5px 5px;
}
.white-key {
    position: absolute;
    width: 40px;
    height: 200px;
    background: white;
    border: 1px solid #ccc;
    z-index: 1;
}
.black-key {
    position: absolute;
    width: 24px;
    height: 120px;
    background: black;
    z-index: 2;
    top: 0;
}
.white-key.active {
    background-color: #e0e0e0;
}
.black-key.active {
    background-color: #333;
}
@media (max-width: 768px) {
    body {
        padding-bottom: 160px;
    }
    .piano-keys {
        height: 150px;
    }
    .white-key {
        height: 150px;
    }
    .black-key {
        height: 90px;
    }
}
.key-label {
    position: absolute;
    bottom: 8px;
    width: 100%;
    text-align: center;
    font-size: 12px;
    color: #666;
    user-select: none;
}
.black-key .key-label {
    color: white;
    bottom: 5px;
    font-size: 10px;
}
/* 新增的丝带效果 */
.ribbon {
    position: fixed;
    width: 10px;
    bottom: 0;
    height: 0;
    background: linear-gradient(
        to top,
        hsl(var(--hue), 100%, 50%),
        hsl(calc(var(--hue) + 30), 70%, 50%)
    );
    border-radius: 5px;
    transform: translateX(-50%);
    pointer-events: none;
    z-index: 9999;
}
.ribbon.release {
    animation: ribbon-release 2s linear forwards;
}
@keyframes ribbon-release {
    0% {
        opacity: 1;
        transform: translate(-50%, 0); /* 初始位置在琴键顶部 */
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -100vh); /* 向上飘出屏幕 */
    }
}
.player-controls {
    position: fixed;
    top: 20px;
    left: 20px;
    background: rgba(255, 255, 255, 0.8);
    padding: 10px;
    border-radius: 8px;
    z-index: 1000;
}
.player-controls select, .player-controls button {
    margin: 5px;
    padding: 5px;
}
/* 轮播字幕样式 */
.marquee-container {
    position: fixed;
    top: 90px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    max-width: 80%;
    height: 40px;
    background: rgba(255,255,255, 0.3);
box-shadow: 2px 2px 2px 1px rgba(0, 0, 0, 0.2);
    border-radius: 25px;
    z-index: 1001;
    display: flex;
    align-items: center;
    justify-content: center;
}
.marquee-text {
    color: #fff;
    font-size: 18px;
    text-align: center;
    padding: 0 20px;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    position: absolute;
}
.marquee-text.active {
    opacity: 1;
}