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

body, html {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}

.background {
    background-image: url('pic/mian.png'); /* 替换为你的图片路径 */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

/* 添加半透明遮罩层 */
.background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3); /* 调整透明度 */
}

.content {
    text-align: center;
    color: white;
    z-index: 1;
    padding: 40px;
}

.title {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 300;
    letter-spacing: 2px;
}

.description {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.start-button {
    display: inline-block;
    padding: 15px 40px;
    background: transparent;
    color: white;
    text-decoration: none;
    font-size: 1.1rem;
    border: 2px solid white;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    transition: all 0.3s ease;
}

.start-button:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: white;
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .title {
        font-size: 2rem;
    }
    
    .description {
        font-size: 1rem;
    }
    
    .start-button {
        padding: 12px 30px;
        font-size: 1rem;
    }
}