/* 공통 CSS */
body {
    font-family: Arial, sans-serif;
    background-color: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.content {
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.header-image {
    width: 100%;
    max-width: 600px;
    height: auto;
    border-radius: 8px;
    margin-bottom: -40px;
    z-index: 1;
    position: relative;
}

.container {
    background: #ffffff;
    padding: 60px 20px 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    max-width: 600px;
    width: 100%;
    position: relative;
    z-index: 0;
    margin: 0 auto;
}

h1 {
    margin-bottom: 20px;
}

.download-btn {
    display: inline-block;
    background: black;
    color: #fff;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
    transition: background 0.3s;
}

.download-btn:hover {
    background: #2980b9;
}

/* 핸드폰 화면에 대한 추가 CSS */
@media only screen and (max-width: 480px) {
    .header-image {
        max-width: 100%;
        margin-bottom: -20px;
    }
    .container {
        padding: 40px 10px 10px;
    }
    h1 {
        font-size: 24px;
        margin-bottom: 10px;
    }
    .download-btn {
        padding: 8px 16px;
        font-size: 14px;
    }
}