/* ----------------------------------------------------- */
/* 共通設定 */
/* ----------------------------------------------------- */
body {
    font-family: "Segoe UI", sans-serif;
    margin: 0;
    padding: 0;
    background: #f8f9fb;
    color: #2c2c2c;
    line-height: 1.7;
    padding-top: 60px; 
}

/* 非表示クラス */
.hidden {
    display: none !important;
}

/* ページタイトル（h1はCSSで非表示に） */
h1 {
    text-align: center;
    font-size: 3em;
    color: #333; 
}

/* ----------------------------------------------------- */
/* コンテンツエリアのスタイル (変更なし) */
/* ----------------------------------------------------- */
.container {
    max-width: 900px;
    margin: 40px auto;
    padding: 0 20px;
}

h2 {
    font-size: 1.6rem;
    border-left: 6px solid #07ae6e;
    padding-left: 10px;
    margin-top: 50px;
    font-weight: 600;
}

section {
    background: #ffffff;
    padding: 25px;
    border-radius: 12px;
    margin-top: 25px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.main-message {
    text-align: center;
    padding: 40px 25px;
}

.main-message h2.no-border {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 15px;
    border-left: none;
    padding-left: 0;
}

.lead-text {
    font-size: 1.15rem;
    color: #444;
    max-width: 700px;
    margin: 0 auto;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

.feature-item {
    background: #e6f6f1;
    padding: 18px;
    border-radius: 8px;
    text-align: left;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.feature-item h3 {
    color: #058f5b;
    font-size: 1.3rem;
    margin-top: 0;
}

.feature-item img {
    width: 100%;
    height: auto;
    max-height: 180px;
    object-fit: contain;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 4px;
    display: block;
}

.value-list {
    list-style: none;
    padding-left: 0;
}

.value-list li {
    padding: 10px 0;
    border-bottom: 1px dashed #eee;
    font-size: 1.05rem;
}

.value-list li:last-child {
    border-bottom: none;
}

ul {
    padding-left: 20px;
}

.faq-item {
    margin-bottom: 20px;
}

.faq-item strong {
    display: block;
    margin-bottom: 6px;
    font-size: 1.05rem;
}

footer {
    text-align: center;
    padding: 40px 0;
    color: #777;
    margin-top: 60px;
}

/* ----------------------------------------------------- */
/* トップに戻るボタンのスタイル */
/* ----------------------------------------------------- */
#scrollToTopBtn {
    display: none; 
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 99;
    border: none;
    outline: none;
    background-color: #07ae6e;
    color: white;
    cursor: pointer;
    padding: 15px;
    border-radius: 50%;
    font-size: 18px;
    line-height: 1; 
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    transition: background-color 0.3s;
}

#scrollToTopBtn:hover {
    background-color: #058f5b;
}

/* ----------------------------------------------------- */
/* モバイル対応 (Media Query) */
/* ----------------------------------------------------- */
@media (max-width: 600px) {
    body {
        padding-top: 50px;
    }
    #header {
        height: 50px;
        padding: 0 10px;
    }
    #logo {
        height: 35px;
    }
    .header-icon-btn img {
        height: 20px;
        width: 20px;
    }
    .login-btn {
        padding: 6px 10px;
        font-size: 14px;
    }

    .main-message h2.no-border {
        font-size: 1.5rem;
    }
    .lead-text {
        font-size: 1rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    #scrollToTopBtn {
        bottom: 20px;
        right: 20px;
        padding: 12px;
        font-size: 16px;
    }
}