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

        body {
            font-family: 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', 'Meiryo', sans-serif;
            color: #333333;
            line-height: 1.6;
            background-color: #ffffff;
        }

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

        /* Main Visual Section - 修正版 */
        .mv-section {
            width: 100%;
            background: #f8f9fa;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #666666;
            font-size: 1.2rem;
            border-bottom: 1px solid #e9ecef;
            /* 高さを自動調整に変更 */
            min-height: 400px; /* 最小高さを設定 */
        }

        .mv-section picture,
        .mv-section img {
            width: 100%;
            height: auto;
            display: block;
            max-width: 100%;
        }

        /* Header Section */
        .hero-section {
            background-color:#00579F;
            color: white;
            padding: 60px 0;
            text-align: center;
        }

        .hero-title {
            font-size: 2.5rem;
            font-weight: bold;
            margin-bottom: 30px;
            letter-spacing: 0.05em;
            line-height: 1.3;
        }

        .hero-description {
            font-size: 1.1rem;
            line-height: 1.8;
            max-width: 1000px;
            margin: 0 auto;
            opacity: 0.95;
        }

        /* Main Content */
        .main-content {
            padding: 80px 0;
        }

        .section {
            margin-bottom: 80px;
        }

        .title-tag{
          background-color: #fff;
          color: #333;
          display: inline-block;
          width: auto;
          padding: 5px 10px;
          border-radius: 10px;
        }

        .section-title {
            font-size: 1.8rem;
            color: #333333;
            margin-bottom: 70px;
            padding-bottom: 15px;
            border-bottom: 2px solid #ececec;
            font-weight: bold;
            text-align: center;
        }

        /* Products Section */
        .products-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
            gap: 40px;
            margin-bottom: 50px;
        }

        .product-card {
            background: #f8f9fa;
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 4px 15px rgba(0, 87, 159, 0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .product-title {
            font-size: 1.5rem;
            color: #333333;
            margin-bottom: 20px;
            font-weight: bold;
            text-align: center;
        }

        .product-images {
            display: flex;
            gap: 15px;
            margin-bottom: 25px;
            justify-content: center;
        }

        .product-image {
            width: 350px;
            height: 350px;
            background: #e9ecef;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #6c757d;
            font-size: 0.9rem;
            border: 2px solid #dee2e6;
        }

        .product-description {
            color: #333333;
            margin-bottom: 25px;
            text-align: left;
            line-height: 1.7;
        }

        .campaign-btn {
            display: inline-block;
            background-color: #00579F;
            color: white;
            padding: 12px 30px;
            text-decoration: none;
            border-radius: 25px;
            font-weight: bold;
            transition: all 0.3s ease;
            text-align: center;
            font-size: 1rem;
            border: none;
            cursor: pointer;
        }

        .campaign-btn:hover {
            background-color: #fff;
            color: #00579F;
            border-color: #00579F;
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(0, 87, 159, 0.3);
        }

        .btn-center {
            display: block;
            width: fit-content;
            margin: 0 auto;
        }

        .btn-large {
            font-size: 1.2rem;
            padding: 18px 50px;
            margin: 50px auto;
        }

        /* Flow Section */
        .flow-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-bottom: 50px;
        }

        .flow-step {
            background: white;
            border: 2px solid #e9ecef;
            border-radius: 12px;
            padding: 25px;
            text-align: center;
            position: relative;
            transition: border-color 0.3s ease;
        }

        .flow-step:hover {
            border-color: #00579F;
        }

        .step-number {
            background: #00579F;
            color: white;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            margin: 0 auto 20px;
            font-size: 1.2rem;
        }

        .step-title {
            color: #333333;
            margin-bottom: 15px;
            font-weight: bold;
        }

        .step-description {
            color: #666666;
            line-height: 1.6;
            font-size: 0.95rem;
        }

        /* Notice Section */
        .notice-section {
            background: #f8f9fa;
            border-left: 5px solid #00579F;
            padding: 30px;
            border-radius: 8px;
            margin-top: 50px;
        }

        .notice-title {
            color: #00579F;
            font-weight: bold;
            margin-bottom: 20px;
            font-size: 1.2rem;
        }

        .notice-list {
            list-style: none;
            padding: 0;
        }

        .notice-list li {
            margin-bottom: 15px;
            padding-left: 20px;
            position: relative;
            line-height: 1.7;
        }

        .notice-list li:before {
            content: "・";
            color: #00579F;
            font-weight: bold;
            position: absolute;
            left: 0;
        }

        /* Responsive Design - 修正版 */
        @media (max-width: 768px) {
            .mv-section {
                min-height: 250px; /* モバイル用の最小高さを調整 */
            }

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

            .hero-description {
                font-size: 1rem;
            }

            .products-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .product-images {
                flex-direction: column;
                align-items: center;
            }

            .product-image {
                width: 350px;
                height: 350px;
                margin-bottom: 10px;
            }

            .flow-steps {
                grid-template-columns: 1fr;
            }

            .container {
                padding: 0 15px;
            }

            .main-content {
                padding: 50px 0;
            }

            .section {
                margin-bottom: 50px;
            }
        }

        @media (max-width: 480px) {
            .mv-section {
                min-height: 200px; /* さらに小さな画面用 */
            }

            .hero-title {
                font-size: 1.7rem;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .product-card {
                padding: 20px;
            }

            .btn-large {
                font-size: 1.1rem;
                padding: 15px 35px;
            }

            .product-image {
                width: 200px;
                height: 200px;
            }
}