/* 横屏提示遮罩 */
#landscapeTip {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    z-index: 999999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    transition: opacity 0.4s ease;
}

#landscapeTip.hidden {
    opacity: 0;
    pointer-events: none;
}

.landscape-icon {
    width: 100px;
    height: 100px;
    margin-bottom: 30px;
    position: relative;
}

.landscape-phone {
    width: 50px;
    height: 90px;
    border: 4px solid #fff;
    border-radius: 10px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: rotatePhone 2s ease-in-out infinite;
}

.landscape-phone::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 15px;
    height: 3px;
    background: rgba(255,255,255,0.5);
    border-radius: 2px;
}

.landscape-phone::after {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 8px;
    height: 8px;
    border: 2px solid rgba(255,255,255,0.5);
    border-radius: 50%;
}

.landscape-arrow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120px;
    height: 120px;
    margin: -60px 0 0 -60px;
    animation: rotateArrow 2s ease-in-out infinite;
}

.landscape-arrow::before {
    content: '↻';
    font-size: 40px;
    position: absolute;
    top: -10px;
    right: -10px;
    color: rgba(255,255,255,0.8);
}

@keyframes rotatePhone {
    0%, 100% { transform: translate(-50%, -50%) rotate(0deg); }
    50% { transform: translate(-50%, -50%) rotate(-90deg); }
}

@keyframes rotateArrow {
    0%, 100% { transform: rotate(0deg); opacity: 0.8; }
    50% { transform: rotate(-90deg); opacity: 0.3; }
}

.landscape-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.landscape-desc {
    font-size: 16px;
    opacity: 0.85;
    text-align: center;
    padding: 0 30px;
}

.landscape-emoji {
    font-size: 48px;
    margin-bottom: 20px;
    animation: bounce 1s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}