@charset "UTF-8";

/* ==========================================================================
   基盤スタイル（リセット＆共通設定）
   ========================================================================== */
body {
    margin: 0;
    padding: 0;
    font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
    background-color: #f8fafc;
    color: #334155;
    line-height: 1.8;
    font-size: 17px; /* シニア向けに全体的に文字を少し大きめに設定 */
}

.container {
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

h1, h2, h3, h4 {
    color: #1e293b;
    margin-top: 0;
}

/* ==========================================================================
   ヘッダーデザイン
   ========================================================================== */
.main-header {
    background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    color: #ffffff;
    text-align: center;
    padding: 50px 20px;
}

.header-inner .header-sub {
    background-color: #e74c3c;
    color: #ffffff;
    font-size: 14px;
    font-weight: bold;
    padding: 4px 12px;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: 15px;
    letter-spacing: 1px;
}

.main-header h1 {
    color: #ffffff;
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 10px;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.2);
}

.main-header p {
    font-size: 18px;
    margin: 0;
    opacity: 0.9;
}

@media (max-width: 768px) {
    .main-header h1 { font-size: 26px; }
    .main-header p { font-size: 15px; }
}

/* ==========================================================================
   導入（共感セクション）
   ========================================================================== */
.hero-section {
    margin-top: -30px;
    margin-bottom: 40px;
}

.hero-card {
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    padding: 40px;
    display: flex;
    align-items: center;
    gap: 30px;
}

.hero-content {
    flex: 1;
}

.hero-content h2 {
    font-size: 24px;
    color: #e74c3c;
    border-bottom: 2px solid #fecaca;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.worry-list {
    list-style: none;
    padding: 0;
    margin: 0 margin-bottom 20px 0;
}

.worry-list li {
    position: relative;
    padding-left: 30px;
    margin-bottom: 12px;
    font-weight: bold;
    color: #475569;
}

.worry-list li::before {
    content: "✕";
    position: absolute;
    left: 5px;
    color: #e74c3c;
    font-size: 18px;
}

.hero-lead {
    font-size: 18px;
    font-weight: bold;
    color: #1e293b;
    border-left: 4px solid #3498db;
    padding-left: 15px;
    margin: 0;
}

.hero-img {
    flex: 1;
    text-align: center;
}

.hero-img img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

@media (max-width: 768px) {
    .hero-card {
        flex-direction: column;
        padding: 25px;
    }
    .hero-img {
        order: -1; /* スマホ時は画像を上にする */
    }
}

/* ==========================================================================
   目次・ナビゲーション
   ========================================================================== */
.main-nav {
    background-color: #f1f5f9;
    padding: 25px 0;
    border-top: 1px solid #e2e8f0;
    border-bottom: 1px solid #e2e8f0;
    text-align: center;
    margin-bottom: 40px;
}

.nav-title {
    font-weight: bold;
    color: #334155;
    margin-bottom: 15px;
}

.main-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
}

.main-nav ul li a {
    display: block;
    background-color: #ffffff;
    color: #2c3e50;
    text-decoration: none;
    font-weight: bold;
    padding: 10px 20px;
    border-radius: 30px;
    border: 1px solid #cbd5e1;
    transition: all 0.3s ease;
    font-size: 15px;
}

.main-nav ul li a:hover {
    background-color: #3498db;
    color: #ffffff;
    border-color: #3498db;
}

/* ==========================================================================
   内部記事カードデザイン（5点）
   ========================================================================== */
.info-card {
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.02);
    padding: 40px;
    margin-bottom: 40px;
    border: 1px solid #e2e8f0;
    position: relative;
}

.article-badge {
    position: absolute;
    top: -15px;
    left: 30px;
    background-color: #3498db;
    color: #ffffff;
    font-weight: bold;
    padding: 3px 15px;
    border-radius: 4px;
    font-size: 14px;
}

.info-card h3 {
    font-size: 24px;
    border-bottom: 2px solid #3498db;
    padding-bottom: 12px;
    margin-top: 5px;
    margin-bottom: 20px;
}

.article-intro {
    font-size: 18px;
    font-weight: bold;
    color: #2c3e50;
    background-color: #f0fdf4;
    padding: 15px 20px;
    border-radius: 6px;
    border-left: 4px solid #22c55e;
}

.article-body {
    margin-top: 20px;
}

.article-img-center {
    text-align: center;
    margin-top: 25px;
}

.article-img-center img {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
}

/* 記事2内の表デザイン */
.spec-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

.spec-table th, .spec-table td {
    border: 1px solid #cbd5e1;
    padding: 15px;
}

.spec-table th {
    background-color: #f8fafc;
    color: #1e293b;
    width: 30%;
    text-align: left;
}

.caution-text {
    font-size: 15px;
    color: #e74c3c;
    font-weight: bold;
}

/* 記事4内のリストデザイン */
.rule-list {
    padding-left: 20px;
}

.rule-list li {
    margin-bottom: 15px;
}

@media (max-width: 768px) {
    .info-card { padding: 30px 20px; }
    .info-card h3 { font-size: 20px; }
    .spec-table th, .spec-table td { display: block; width: 100%; box-sizing: border-box; }
    .spec-table th { border-bottom: none; }
}

/* ==========================================================================
   アフィリエイト誘導エリア（CTA）
   ========================================================================== */
.cta-section {
    background-color: #fff7ed;
    border: 3px solid #ffedd5;
    border-radius: 12px;
    padding: 40px;
    margin-top: 60px;
    margin-bottom: 60px;
}

.cta-inner {
    text-align: center;
}

.cta-tag {
    background-color: #f97316;
    color: #ffffff;
    font-weight: bold;
    font-size: 14px;
    padding: 4px 16px;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: 15px;
}

.cta-inner h2 {
    font-size: 28px;
    color: #c2410c;
    margin-bottom: 15px;
}

.cta-inner > p {
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto 40px auto;
}

/* 横並び商品カード */
.product-wrapper {
    display: flex;
    gap: 25px;
    text-align: left;
    margin-top: 30px;
}

.item-card {
    background-color: #ffffff;
    border: 1px solid #fed7aa;
    border-radius: 8px;
    padding: 25px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: 0 4px 10px rgba(249, 115, 22, 0.05);
}

.item-img {
    text-align: center;
    margin-bottom: 15px;
}

.item-img img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

.recommend-badge {
    background-color: #ea580c;
    color: #ffffff;
    font-size: 12px;
    font-weight: bold;
    padding: 2px 8px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 10px;
}

.item-body h4 {
    font-size: 19px;
    margin-bottom: 10px;
    color: #1e293b;
}

.item-body p {
    font-size: 15px;
    color: #475569;
    line-height: 1.6;
    margin-bottom: 20px;
}

/* ボタン */
.shop-btn {
    display: block;
    background: linear-gradient(to bottom, #f97316 0%, #ea580c 100%);
    color: #ffffff;
    text-align: center;
    text-decoration: none;
    font-weight: bold;
    padding: 15px 20px;
    border-radius: 8px;
    box-shadow: 0 4px 0 #c2410c;
    transition: all 0.2s ease;
}

.shop-btn:hover {
    transform: translateY(2px);
    box-shadow: 0 2px 0 #c2410c;
}

@media (max-width: 768px) {
    .cta-section { padding: 25px 15px; }
    .cta-inner h2 { font-size: 22px; }
    .product-wrapper { flex-direction: column; }
}

/* ==========================================================================
   フッターデザイン
   ========================================================================== */
.main-footer {
    background-color: #1e293b;
    color: #94a3b8;
    text-align: center;
    padding: 30px 20px;
    font-size: 14px;
    margin-top: 80px;
}