body {
    font-family: "SF Pro JP", "SF Pro Display", "SF Pro Icons", "Apple Gothic",
        "HiraKakuProN-W3", "ヒラギノ角ゴ Pro W3", "メイリオ", "Meiryo",
        "ＭＳ Ｐゴシック", "Helvetica Neue", "Helvetica", "Arial", sans-serif;
    margin: 0;
    padding: 0;
    color: #333;
    line-height: 1.6;
    background-color: #fff;
}

header {
    display: flex;
    align-items: center;
    padding: 10px 20px;
    background-color: #fff;
    border-bottom: 1px solid #f5f5f5;
}

.logo {
    max-width: 50px;
    margin-right: 10px;
}

.logo-text {
    font-size: 24px;
    color: #777;
    font-weight: normal;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 40px 20px;
}

.search {
    margin-bottom: 40px;
}

.search input {
    width: 100%;
    padding: 10px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.card {
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

.card h3 {
    margin: 0 0 15px;
    font-size: 20px;
    color: #333;
}

.card p {
    margin: 0;
    font-size: 16px;
    line-height: 1.8;
    color: #666;
}

footer {
    background-color: #f5f5f5;
    padding: 20px;
    text-align: center;
    font-size: 14px;
    color: #777;
}

footer p {
    margin: 0;
}

.section {
    margin-bottom: 80px;
}

.section h2 {
    font-size: 28px;
    color: #333;
    margin-bottom: 30px;
}

@media screen and (max-width: 768px) {
    .grid {
        grid-template-columns: repeat(auto-fit, minmax(100%, 1fr));
    }

    .card {
        padding: 20px;
    }

    .card h3 {
        font-size: 18px;
    }

    .card p {
        font-size: 14px;
    }

    .section h2 {
        font-size: 24px;
    }
}