/* Base styles */
body {
    font-family: 'Noto Sans CJK JP', sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
}

header {
    background-color: #0073e6;
    color: white;
    padding: 10px 0;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 2em;
}

nav ul {
    list-style: none;
    padding: 0;
}

nav ul li {
    display: inline;
    margin-right: 15px;
}

nav ul li a {
    color: white;
    text-decoration: none;
}

main {
    padding: 20px;
}

#hero {
    background-color: #e6f7ff;
    padding: 20px;
    text-align: center;
}

#hero h2 {
    margin: 0;
    font-size: 1.8em;
}

#hero p {
    font-size: 1.2em;
}

#hero button {
    margin: 10px;
    padding: 10px 20px;
    background-color: #0073e6;
    color: white;
    border: none;
    cursor: pointer;
    font-size: 1em;
}

#features {
    margin-top: 20px;
}

#features h3 {
    font-size: 1.5em;
    margin-bottom: 10px;
}

#features ul {
    list-style: none;
    padding: 0;
}

#features ul li {
    background-color: #fff;
    margin-bottom: 10px;
    padding: 10px;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Responsive styles */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.5em;
    }

    nav ul li {
        display: block;
        margin-bottom: 10px;
    }

    #hero h2 {
        font-size: 1.5em;
    }

    #hero p {
        font-size: 1em;
    }

    #hero button {
        font-size: 0.9em;
    }

    #features h3 {
        font-size: 1.2em;
    }
}