/* =====================
   全体
===================== */
body {
    margin: 0;
    background: #f4f6f8;
    font-family: "Meiryo", sans-serif;
    color: #333;
}

/* =====================
   レイアウト
===================== */
.wrapper {
    max-width: 900px;
    margin: 40px auto;
    padding: 20px;
}

/* =====================
   見出し
===================== */
h1 {
    text-align: center;
    font-size: 28px;
    margin-bottom: 10px;
}

.page-desc {
    text-align: center;
    font-size: 16px;
    color: #555;
    margin-bottom: 30px;
}

/* =====================
   ダウンロード一覧
===================== */
.download-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

/* =====================
   カード
===================== */
.download-card {
    background: #ffffff;
    border-radius: 10px;
    padding: 24px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    display: flex;
    flex-direction: column;
}

.software-name {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 16px;
}

/* =====================
   ボタン
===================== */
.download-card form {
    margin-top: auto;
}

.download-button {
    width: 100%;
    padding: 16px 0;
    font-size: 18px;
    font-weight: bold;
    background: #4a90e2;
    color: #ffffff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

.download-button:hover {
    background: #357ab8;
}

/* =====================
   注意文
===================== */
.notice {
    margin-top: 40px;
    text-align: center;
    font-size: 14px;
    color: #666;
}

/* =====================
   スマホ対応
===================== */
@media (max-width: 600px) {
    h1 {
        font-size: 24px;
    }

    .download-button {
        font-size: 17px;
    }
}
.video-embed {
  display: flex;
  justify-content: center; /* 横中央 */
}

.div-youtube{
    margin: auto;
    max-width: 560px;
    padding-bottom: 20px;
    text-align: center;
}