body {
    background-color: #d8f0d0; /* AviUtl風の淡い緑 */
    font-family: "MS PGothic", "MS Gothic", sans-serif;
    margin: 0;
    padding: 20px;
}

.main-box {
    background: #ffffff;
    border: 2px solid #5fa05f;
    border-radius: 10px;
    padding: 20px;
    max-width: 800px;
    margin: auto;
}

h1 {
    text-align: center;
    color: #006600;
    margin-bottom: 20px;
}

.section {
    background: #e8ffe8;
    border: 1px solid #66aa66;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 20px;
}

.section h2 {
    color: #004400;
    margin-top: 0;
}

.dl-btn {
    display: inline-block;
    padding: 8px 16px;
    background: #66aa66;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    border: 1px solid #447744;
}

.dl-btn:hover {
    background: #559955;
}

.footer {
    text-align: center;
    color: #004400;
    margin-top: 20px;
}