@charset "utf-8";
        body {
            font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
            line-height: 1.6;
            color: #333;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
            background-color: #f9f9f9;
        }
        h1 {
            text-align: center;
            color: #2c3e50;
            border-bottom: 2px solid #2c3e50;
            padding-bottom: 10px;
        }
        h2 {
            background: #2c3e50;
            color: #fff;
            padding: 10px;
            border-radius: 5px;
            margin-top: 40px;
        }
        h3 {
            border-left: 5px solid #4a90e2;
            padding-left: 10px;
            margin-top: 30px;
            color: #4a90e2;
        }
        dl {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 600px) {
            dl {
                grid-template-columns: 1fr 1fr; /* PCでは2列に並べることも可能です */
            }
        }
        dt {
            font-weight: bold;
            margin-bottom: 5px;
        }
        dd {
            margin-left: 0;
            margin-bottom: 20px;
        }
        img {
            max-width: 100%;
            height: auto;
            border: 1px solid #ddd;
            border-radius: 8px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
            transition: transform 0.2s;
        }
        img:hover {
            transform: scale(1.02);
        }
        ul {
            list-style: none;
            padding: 0;
        }
        li {
            background: #fff;
            margin-bottom: 10px;
            padding: 10px;
            border-radius: 5px;
            border: 1px solid #eee;
        }
        a {
            color: #0066cc;
            text-decoration: none;
            display: block;
        }
        a:hover {
            text-decoration: underline;
        }