/* Responsive dark background with centered white text */

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

body {
    font-family: 'Arial', 'Helvetica', sans-serif;
    color: #ffffff;
    background-image: url('../photos/bg.jpg'); /* background picture, changeable */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow: hidden;
}


h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8);
}

p {
    font-size: 1.2rem;
    line-height: 1.6;
    margin-bottom: 15px;
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.7);
}

/* 移动端适配 */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    p { font-size: 1.1rem; }
    .container {
        padding: 30px 15px;
        margin: 10px;
    }
}

@media (max-width: 480px) {
    h1 { font-size: 1.8rem; }
    p { font-size: 1rem; }
}