body {
    margin: 0;
    font-family: "BIZ UDPGothic", sans-serif;
    line-height: 1.8;
    background-color: #f5f7fa;
    color: #333;
}

/* =========================
   共通
========================= */

img {
    width: 100%;
    height: auto;
    display: block;
}

main {
    width: 90%;
    max-width: 1000px;
    margin: 50px auto;
}

section {
    margin-bottom: 60px;
}

/* =========================
   ヘッダー
========================= */

header {
    display: flex;
    justify-content: center;
    padding: 20px;
    background-color: #f5f7fa;
}

.header-inner {
    max-width: 350px;
    width: 100%;
}

/* =========================
   見出し
========================= */

h2 {
    border-left: 8px solid #1697db;
    padding-left: 12px;
    margin-bottom: 20px;
    font-size: 1.8rem;
}

/* =========================
   FAQ
========================= */

.faq details {
    background-color: #fff;
    margin-bottom: 15px;
    padding: 18px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.faq summary {
    font-weight: bold;
    cursor: pointer;
    list-style: none;
}

.faq summary::-webkit-details-marker {
    display: none;
}

.faq summary::before {
    content: "Q";
    display: inline-block;
    background-color: #1697db;
    color: #fff;

    width: 28px;
    height: 28px;

    line-height: 28px;
    text-align: center;

    border-radius: 50%;
    margin-right: 10px;

    font-size: 0.9rem;
}

/* =========================
   プリンター説明
========================= */

.feature {
    display: flex;
    gap: 30px;
    align-items: center;
}

.feature-image,
.feature-text {
    flex: 1;
}

.feature-text ul {
    padding-left: 20px;
}

.feature-text li {
    margin-bottom: 10px;
}

/* =========================
   リンク
========================= */

.link-box {
    display: flex;
    gap: 20px;
}

.link-box a {
    background-color: #fff;
    text-decoration: none;
    color: #333;

    border-radius: 15px;

    flex: 1;

    transition: 0.3s;

    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.link-box a:hover {
    transform: translateY(-5px);
}

.link-box p {
    text-align: center;
    margin-top: 12px;
    font-weight: bold;
}

/* =========================
   フッター
========================= */

footer {
    background-color: #1697db;
    color: #fff;
    text-align: center;
    padding: 20px;
    font-size: 0.9rem;
}

/* =========================
   スマホ対応
========================= */

@media screen and (max-width: 768px) {

    main {
        width: 92%;
    }

    h2 {
        font-size: 1.5rem;
    }

    .feature {
        flex-direction: column;
    }

    .link-box {
        flex-direction: column;
    }

}