/* 全局样式 */
body {
    margin: 0;
    font-family: 'Arial', sans-serif;
    overflow-x: hidden;
}

/* 顶部导航 */
.nav {
    position: fixed;
    width: 100%;
    padding: 20px;
    background: rgba(255, 255, 255, 0.95);
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.logo {
    font-size: 24px;
    font-weight: bold;
}

.start-btn {
    padding: 10px 30px;
    background: linear-gradient(45deg, #6B46C1, #805AD5);
    color: white;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: transform 0.3s;
}

.start-btn:hover {
    transform: scale(1.05);
}



/* 页脚 */
.footer {
    background: #1A202C;
    color: white;
    padding: 50px;
    text-align: center;
}



.title {
    font-size: 2.2em;
    margin-bottom: 10px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.subtitle {
    font-size: 1.2em;
    text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}