body {
            margin: 0;
            min-height: 100vh;
            padding: 40px 0;
            box-sizing: border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #f4f4f2;
            color: #1f2933;
            font-family: Arial, Helvetica, sans-serif;
        }

        main {
            width: 100%;
            max-width: 920px;
            text-align: center;
        }

        h1 {
            margin: 0 0 18px;
            font-size: 2rem;
            font-weight: 700;
        }

        img {
            width: 100%;
            max-width: 920px;
            border-radius: 8px;
            box-shadow: 0 18px 45px rgba(0, 0, 0, 0.18);
        }

        .home-button {
            display: inline-block;
            margin-top: 22px;
            padding: 12px 22px;
            border-radius: 8px;
            background: #1f2933;
            color: #fff;
            font-weight: 700;
            text-decoration: none;
        }

        .home-button:hover {
            background: #344454;
        }


        .pop-tile-study {
            font-family: Arial, Helvetica, sans-serif;
            color: #111827;
            background: #fff;
            max-width: 980px;
        }

        .pop-tile-study h2 {
            margin: 0;
            font-size: 28px;
            line-height: 1.15;
        }

        .pop-tile-study .subtitle {
            margin: 4px 0 34px;
            color: #666;
            font-size: 16px;
        }

        .pop-tile-study .tile-map {
            position: relative;
            width: 908px;
            height: 590px;
        }

        .pop-tile-study .tile {
            position: absolute;
            display: grid;
            place-items: center;
            width: 66px;
            height: 66px;
            border: 2px solid #d8d8d8;
            border-radius: 7px;
            box-sizing: border-box;
            color: #111827;
            font-size: 20px;
            font-weight: 700;
        }

        .pop-tile-study .footer {
            margin: 12px 0 0;
            font-size: 17px;
        }

        .pop-tile-study .note {
            margin: 6px 0 0;
            color: #666;
            font-size: 16px;
        }

        .button-row {
            display: flex;
            justify-content: center;
            margin-top: 40px;
            padding-bottom: 30px;
        }

        .home-button {
            display: inline-block;

            padding: 12px 22px;
            border-radius: 8px;
            background: #1f2933;
            color: #fff;
            font-weight: 700;
            text-decoration: none;
        }

        .home-button:hover {
            background: #344454;
        }


        @media (max-width: 760px) {
            body {
                min-height: auto;
                padding: 20px 12px;
                align-items: flex-start;
            }

            .pop-tile-study {
                width: 100%;
                max-width: 100%;
                padding: 20px 14px 24px;
                box-sizing: border-box;
                overflow: hidden;
            }

            .pop-tile-study h2 {
                font-size: 22px;
                line-height: 1.2;
            }

            .pop-tile-study .subtitle {
                margin-bottom: 18px;
                font-size: 14px;
            }

            .pop-tile-study .tile-map {
                width: 100%;
                height: 590px;
                overflow-x: auto;
                overflow-y: visible;
                padding-bottom: 12px;
                -webkit-overflow-scrolling: touch;
            }

            .pop-tile-study .footer,
            .pop-tile-study .note {
                font-size: 14px;
                line-height: 1.4;
            }

            .home-button {
                display: block;
                width: 100%;
                max-width: 260px;
                margin: 12px auto 0;
                box-sizing: border-box;
                text-align: center;
            }
        }

        @media (max-width: 420px) {
            .pop-tile-study {
                padding: 18px 10px 22px;
            }

            .pop-tile-study h2 {
                font-size: 20px;
            }
        }