* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        /* ===== フォントベース設定 ===== */
        body {
            font-family: 'M PLUS Rounded 1c', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
        }


        /* ===== メイン画像のリセットと比率調整 ===== */
        .hero-image {
            flex: 1;
            background-image: url(images/small-grow-homepage-easy.jpg) ; 
            background-repeat: no-repeat;
            background-position: center;
            border-radius: 15px;
            aspect-ratio: 3/4;
            max-width: 100%;
            height: auto;
            }



        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header */
        header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.2);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
        }

        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            color: #fff;
            text-decoration: none;
        }

        .search-bar {
            display: flex;
            flex: 1;
            max-width: 400px;
            margin: 0 2rem;
        }

        .search-bar input {
            flex: 1;
            padding: 0.8rem;
            border: 2px solid #e0e0e0;
            border-radius: 25px 0 0 25px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.3s;
        }

        .search-bar input:focus {
            border-color: #667eea;
        }

        .search-btn {
            padding: 0.8rem 1.2rem;
            background: #667eea;
            color: white;
            border: none;
            border-radius: 0 25px 25px 0;
            cursor: pointer;
            transition: background 0.3s;
        }

        .search-btn:hover {
            background: #5a6fd8;
        }

        .header-actions {
            display: flex;
            gap: 1rem;
            align-items: center;
        }

        .btn {
            padding: 0.8rem 1.5rem;
            border: none;
            border-radius: 25px;
            cursor: pointer;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s;
            display: inline-block;
        }

        .btn-primary {
            background: #667eea;
            color: white;
        }

        .btn-primary:hover {
            background: #5a6fd8;
            transform: translateY(-2px);
        }

        .btn-secondary {
            background: transparent;
            color: #667eea;
            border: 2px solid #667eea;
        }

        .btn-secondary:hover {
            background: #667eea;
            color: white;
        }

        /* Navigation */
        nav {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.2);
        }

        .nav-content {
            display: flex;
            justify-content: center;
            gap: 2rem;
            padding: 1rem 0;
        }

        .nav-link {
            text-decoration: none;
            color: #333;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            transition: all 0.3s;
            position: relative;
        }

        .nav-link:hover {
            background: rgba(102, 126, 234, 0.1);
            color: #667eea;
            transform: translateY(-2px);
        }

        /* Main Content */
        main {
            padding: 2rem 0;
        }

        /* Hero Banner */
        .hero {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            padding: 3rem;
            margin-bottom: 3rem;
            display: flex;
            align-items: center;
            gap: 3rem;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
        }

        /* hero-image 上に移動 */       
        
        
        /* ===== スマホ調整（縦積みレイアウト） ===== */
        @media (max-width: 768px) {
            .hero {
                flex-direction: column;
                padding: 2rem 1rem;
                text-align: center;
            }

            .hero-image {
                width: 80%;
                margin-bottom: 1.5rem;
            }

            .hero-actions {
                flex-direction: column;
            }

            .hero-title {
                font-size: 2rem;
            }

            .sale-price {
                font-size: 1.8rem;
            }
        }

            /* ===== タイトルのデザイン強化 ===== */
            .hero-title {
            font-size: 2.8rem;
            font-weight: bold;
            color: #222;
            margin-bottom: 0.5rem;
            letter-spacing: 0.05em;
            }

            /* ===== 価格の強調 ===== */
            .sale-price {
            font-size: 2rem;
            font-weight: 700;
            color: #e74c3c;
            }


            /* ===== セカンダリーボタン（詳細を見る）もラウンド化 ===== */
            .btn-secondary {
            font-family: 'M PLUS Rounded 1c', sans-serif;
            border-radius: 30px;
            }        .hero-content {
            flex: 1;
            }

            .hero-title {
            font-size: 2.8rem;
            font-weight: bold;
            color: #222;
            margin-bottom: 0.5rem;
            letter-spacing: 0.05em;
            }

            .hero-subtitle {
                font-size: 1.2rem;
                margin-bottom: 1rem;
                color: #666;
            }

            .hero-image { 
                width: 100%; height: auto; /* 高さは自動調整 */ 
                max-width: 1200px; /* 最大幅を制限 */ 
                object-fit: cover; 
            } /* タブレット用 */ 

        @media (max-width: 768px) { 
            .hero-image { 
                height: 300px; /* モバイルでは固定高さ */ 
                } 

            } /* スマートフォン用 */

        @media (max-width: 480px) { 
            .hero-image { height: 250px;
                        } }
            .price-info {
                margin: 1.5rem 0;
            }

        .original-price {
            text-decoration: line-through;
            color: #999;
            margin-right: 1rem;
        }

        .sale-price {
            font-size: 1.5rem;
            font-weight: bold;
            color: #e74c3c;
        }

        .discount {
            background: #e74c3c;
            color: white;
            padding: 0.3rem 0.8rem;
            border-radius: 15px;
            font-size: 0.9rem;
            margin-left: 1rem;
        }

        .hero-actions {
            display: flex;
            gap: 1rem;
            margin-top: 2rem;
        }

        @media (max-width: 768px) {
                .hero {
                    flex-direction: column;
                    padding: 2rem 1rem;
                    text-align: center;
                }

                .hero-image {
                    width: 80%;
                    aspect-ratio: 3/4;
                    margin-bottom: 1.5rem;
                }

                .hero-content {
                    width: 100%;
                }

                .hero-actions {
                    flex-direction: column;
                   }
                }


        /* Quick Categories */
        .quick-categories {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            padding: 2rem;
            margin-bottom: 3rem;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 1rem;
        }

        .category-item {
            text-align: center;
            padding: 1.5rem;
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            border-radius: 15px;
            text-decoration: none;
            transition: all 0.3s;
            cursor: pointer;
        }

        .category-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
        }

        .category-icon {
            font-size: 2rem;
            margin-bottom: 0.5rem;
        }

        /* Section Styles */
        .section {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            padding: 2rem;
            margin-bottom: 3rem;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
        }

        .section-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
        }

        .section-title {
            font-size: 1.8rem;
            color: #333;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .section-link {
            color: #667eea;
            text-decoration: none;
            font-weight: 500;
        }

        .section-link:hover {
            text-decoration: underline;
        }

        /* Book Grid */
        .book-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1.5rem;
        }

        .book-item {
            text-align: center;
            padding: 1rem;
            border-radius: 10px;
            transition: all 0.3s;
            cursor: pointer;
        }

        .book-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }

        .book-cover {
            width: 200px;
            height: 280px;
            background-image: url(images/29.png);
            background-position: cover;
            border-radius: 8px;
            margin: 0 auto 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #333;
            font-weight: bold;
        }

        .book-title {
            font-weight: bold;
            margin-bottom: 0.5rem;
            color: #333;
        }

        .book-author {
            color: #666;
            margin-bottom: 0.5rem;
        }

        .book-price {
            font-weight: bold;
            color: #e74c3c;
            margin-bottom: 0.5rem;
        }

        .book-rating {
            color: #f39c12;
        }

        /* Bestsellers */
        .bestseller-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .bestseller-item {
            display: flex;
            gap: 1rem;
            padding: 1.5rem;
            background: rgba(255, 255, 255, 0.5);
            border-radius: 10px;
            transition: all 0.3s;
        }

        .bestseller-item:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
        }

        .bestseller-cover {
            width: 80px;
            height: 100px;
            background: linear-gradient(45deg, #667eea, #764ba2);
            border-radius: 5px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
            font-size: 0.8rem;
        }

        .bestseller-info {
            flex: 1;
        }

        .bestseller-rank {
            font-size: 1.2rem;
            font-weight: bold;
            color: #e74c3c;
            margin-bottom: 0.5rem;
        }

        .bestseller-actions {
            display: flex;
            gap: 0.5rem;
            margin-top: 1rem;
        }

        .btn-small {
            padding: 0.4rem 0.8rem;
            font-size: 0.9rem;
            border-radius: 15px;
        }

        .sale-price {
            font-size: 2rem;
            font-weight: 700;
            color: #e74c3c;
            }

       /* ===== CTAボタン（今すぐ購入）を目立たせる ===== */
            .btn-primary {
            background: #ff7b7b;
            color: white;
            padding: 1rem 2rem;
            font-size: 1.2rem;
            border-radius: 30px;
            box-shadow: 0 4px 14px rgba(255, 123, 123, 0.4);
            font-family: 'M PLUS Rounded 1c', sans-serif;
            }

            .btn-primary:hover {
            background: #e85c5c;
            transform: translateY(-2px);
            }


        /* Features */
        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }

        .feature-item {
            text-align: center;
            padding: 2rem;
            background: rgba(255, 255, 255, 0.5);
            border-radius: 15px;
            transition: all 0.3s;
        }

        .feature-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }

        .feature-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
        }

        .feature-title {
            font-size: 1.2rem;
            font-weight: bold;
            margin-bottom: 1rem;
            color: #333;
        }

        .feature-description {
            color: #666;
        }

        /* Footer */
        footer {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-top: 1px solid rgba(255, 255, 255, 0.2);
            padding: 3rem 0 1rem;
            margin-top: 3rem;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-section h3 {
            margin-bottom: 1rem;
            color: #333;
        }

        .footer-section a {
            display: block;
            color: #666;
            text-decoration: none;
            margin-bottom: 0.5rem;
            transition: color 0.3s;
        }

        .footer-section a:hover {
            color: #fff;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #e0e0e0;
            color: #666;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                gap: 1rem;
            }

            .search-bar {
                max-width: 100%;
                margin: 0;
            }

            .nav-content {
                flex-wrap: wrap;
                gap: 1rem;
            }

            .hero {
                flex-direction: column;
                text-align: center;
            }

            .hero-title {
                font-size: 2rem;
            }

            .category-grid {
                grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
            }

            .bestseller-grid {
                grid-template-columns: 1fr;
            }

            .hero-actions {
                flex-direction: column;
            }
        }

        .site-footer {
            background-color: #fff;
            color: #666f;
            text-align: center;
            padding: 30px 20px;
            margin-top: 60px;
            }

            .footer-logo {
            width: 220px;
            margin-bottom: 15px;
            }

            .footer-text {
            font-size: 0.9rem;
            margin-bottom: 10px;
            }

            .footer-links a {
            color: #666;
            margin: 0 10px;
            text-decoration: none;
            font-size: 0.95rem;
            }

            .footer-links a:hover {
            text-decoration: underline;
            }