:root {
    --primary-color: #27ae60;
    --accent-color: #e67e22;
    --bg-color: #f4f9f6;
    --white: #ffffff;
    --shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
}

body {
    margin: 0;
    font-family: "Hiragino Sans", "Meiryo", sans-serif;
    background-color: var(--bg-color);
    color: #333;
    font-size: 18px;
    line-height: 1.8;
}

/* ヘッダー */
.main-header {
    background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%);
    color: var(--white);
    padding: 60px 20px;
    text-align: center;
}

.main-nav {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.main-nav a {
    text-decoration: none;
    color: #555;
    padding: 20px 25px;
    display: block;
    font-weight: bold;
}

/* レイアウト */
.container {
    max-width: 1200px; /* 記事6つを並べるため少し広めに設定 */
    margin: 0 auto;
    padding: 40px 20px;
}

.hero-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    margin-bottom: 50px;
}

.hero-content {
    padding: 40px;
    text-align: center;
}

.hero-img img { width: 100%; display: block; }

/* 記事グリッド：3列×2行で表示（画面幅に応じて自動調整） */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.info-card {
    background: var(--white);
    padding: 30px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    border-top: 6px solid var(--primary-color);
    transition: 0.3s;
}

.info-card:hover {
    transform: translateY(-5px);
}

.category-tag {
    font-size: 0.8rem;
    background: #e8f8f0;
    color: var(--primary-color);
    padding: 4px 12px;
    border-radius: 20px;
    font-weight: bold;
}

.read-more {
    display: inline-block;
    margin-top: 15px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
}

/* 商品エリア */
.product-wrapper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.item-card {
    display: flex;
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.item-img img { width: 180px; height: 100%; object-fit: cover; }

.item-body { padding: 25px; }

.shop-btn {
    display: block;
    text-align: center;
    background: var(--accent-color);
    color: white;
    text-decoration: none;
    padding: 12px;
    border-radius: 10px;
    font-weight: bold;
    margin-top: 15px;
}

.main-footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 40px 0;
}

@media (max-width: 768px) {
    .item-card { flex-direction: column; }
    .item-img img { width: 100%; height: 200px; }
}