.appdl-wrapper {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
    font-family: "Helvetica Neue", Arial, sans-serif;
}

.appdl-section {
    margin-bottom: 3rem;
    border-bottom: 1px solid #eee;
    padding-bottom: 2rem;
}

.appdl-heading {
    font-size: 1.6rem;
    margin-bottom: 0.5rem;
    color: #333;
    border-left: 4px solid #1E88E5;
    padding-left: 0.6rem;
}

.appdl-body {
    font-size: 1rem;
    color: #555;
    margin-bottom: 1.5rem;
}

.appdl-files {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.appdl-file-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.8rem 1rem;
    background: #fff;
    /* 背景を白にして文字とのコントラストUP */
    border: 1px solid #e0e0e0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    border-radius: 6px;
    transition: background 0.2s ease;
}

.appdl-file-item:hover {
    background: #f0f8ff;
}

.appdl-icon {
    font-size: 1.4rem;
    width: 1.8rem;
    text-align: center;
}

.appdl-name {
    font-weight: 600;
    color: #222;
    /* 濃い色でコントラストUP */
    font-size: 1rem;
    letter-spacing: 0.3px;
}

.appdl-meta {
    font-size: 0.85rem;
    color: #555;
    /* こちらも少し濃くする */
}

.appdl-btn {
    margin-left: auto;
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
    color: #fff;
    background: #1E88E5;
    border-radius: 4px;
    text-decoration: none;
    transition: background 0.2s ease;
}

.appdl-btn:hover {
    background: #1565C0;
}

/* ===========================
   レスポンシブ対応
   画面幅600px以下の場合
=========================== */
@media (max-width: 600px) {
    .appdl-wrapper {
        padding: 0rem;
    }

    .appdl-file-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
        padding: 0.6rem 0.8rem;
    }

    .appdl-btn {
        margin-left: 0;
        width: 100%;
        justify-content: center;
        padding: 1.5rem;
        font-size: 1.2rem;
    }

    .appdl-name,
    .appdl-meta {
        display: block;
    }

    .appdl-meta {
        margin-top: 2px;
    }
}