:root {
            --primary-purple: #6a0dad;
            --secondary-purple: #8a2be2;
            --light-purple: #e6e6fa;
            --dark-purple: #4b0082;
            --accent-color: #9370db;
            --gradient: linear-gradient(135deg, var(--primary-purple), var(--dark-purple));
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Helvetica Neue', Arial, 'Hiragino Sans', 'Hiragino Kaku Gothic Pro', Meiryo, sans-serif;
        }
        
        body {
            background-color: #f9f7ff;
            color: #333;
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        /* ヘッダーとナビゲーション */
        header {
            background: var(--gradient);
            color: white;
            padding: 1rem 0;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        
        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        
        .logo {
            font-size: 1.5rem;
            font-weight: bold;
            display: flex;
            align-items: center;
        }
        
        .logo i {
            margin-right: 0.5rem;
        }
        
        .nav-links {
            display: flex;
            list-style: none;
        }
        
        .nav-links li {
            margin-left: 2rem;
        }
        
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
        }
        
        .nav-links a:hover {
            color: var(--light-purple);
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--light-purple);
            transition: width 0.3s ease;
        }
        
        .nav-links a:hover::after {
            width: 100%;
        }
        
        .mobile-menu {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
        }
        
        /* バナー輪播 */
        .banner {
            margin-top: 80px;
            position: relative;
            height: 500px;
            overflow: hidden;
        }
        
        .slides {
            display: flex;
            transition: transform 0.8s ease;
            height: 100%;
        }
        
        .slide {
            min-width: 100%;
            height: 100%;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-align: center;
            padding: 0 2rem;
        }
        
        .slide-1 {
            background: linear-gradient(rgba(106, 13, 173, 0.7), rgba(75, 0, 130, 0.7)), url('https://images.unsplash.com/photo-1611974789855-9c2a0a7236a3?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover;
        }
        
        .slide-2 {
            background: linear-gradient(rgba(106, 13, 173, 0.7), rgba(75, 0, 130, 0.7)), url('https://images.unsplash.com/photo-1559526324-4b87b5e36e44?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover;
        }
        
        .slide-3 {
            background: linear-gradient(rgba(106, 13, 173, 0.7), rgba(75, 0, 130, 0.7)), url('https://images.unsplash.com/photo-1553877522-43269d4ea984?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover;
        }
        
        .slide-content {
            max-width: 800px;
            z-index: 2;
        }
        
        .slide h2 {
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }
        
        .slide p {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
        }
        
        .banner-controls {
            position: absolute;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 10px;
        }
        
        .banner-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.5);
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .banner-dot.active {
            background-color: white;
            transform: scale(1.2);
        }
        
        /* メインコンテンツ */
        main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 3rem 1rem;
        }
        
        section {
            margin-bottom: 6rem;
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s ease;
        }
        
        section.visible {
            opacity: 1;
            transform: translateY(0);
        }
        
        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }
        
        .section-header h2 {
            color: var(--dark-purple);
            font-size: 2.2rem;
            margin-bottom: 1rem;
            position: relative;
            display: inline-block;
        }
        
        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--gradient);
            border-radius: 2px;
        }
        
        .section-header p {
            max-width: 700px;
            margin: 0 auto;
            color: #666;
        }
        
        /* カードレイアウト - 多様なスタイル */
        .card-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        
        .card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            position: relative;
        }
        
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        
        .card-icon {
            height: 120px;
            background: var(--gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 3rem;
        }
        
        .card-content {
            padding: 1.5rem;
        }
        
        .card h3 {
            color: var(--dark-purple);
            margin-bottom: 1rem;
            font-size: 1.3rem;
        }
        
        /* 画像ギャラリー */
        .gallery {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-top: 2rem;
        }
        
        .gallery-item {
            border-radius: 10px;
            overflow: hidden;
            height: 200px;
            position: relative;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease;
        }
        
        .gallery-item:hover {
            transform: scale(1.05);
        }
        
        .gallery-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .gallery-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(0, 0, 0, 0.7);
            color: white;
            padding: 0.8rem;
            text-align: center;
            font-size: 0.9rem;
        }
        
        /* チャートセクション */
        .chart-container {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            margin-top: 2rem;
        }
        
        .chart-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1.5rem;
        }
        
        .chart-title {
            font-size: 1.3rem;
            color: var(--dark-purple);
            font-weight: bold;
        }
        
        .chart-actions {
            display: flex;
            gap: 0.5rem;
        }
        
        .chart-btn {
            padding: 0.5rem 1rem;
            background: var(--light-purple);
            border: none;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .chart-btn.active {
            background: var(--primary-purple);
            color: white;
        }
        
        .chart-btn:hover {
            background: var(--secondary-purple);
            color: white;
        }
        
        /* ステップ表示 */
        .steps-container {
            display: flex;
            justify-content: space-between;
            margin-top: 3rem;
            position: relative;
        }
        
        .steps-container::before {
            content: '';
            position: absolute;
            top: 60px;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--light-purple);
            z-index: 1;
        }
        
        .step {
            text-align: center;
            position: relative;
            z-index: 2;
            flex: 1;
            padding: 0 1rem;
        }
        
        .step-number {
            width: 60px;
            height: 60px;
            background: var(--gradient);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: bold;
            margin: 0 auto 1.5rem;
            box-shadow: 0 4px 10px rgba(106, 13, 173, 0.3);
        }
        
        .step h3 {
            color: var(--dark-purple);
            margin-bottom: 1rem;
        }
        
        /* 比較テーブル */
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 2rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            border-radius: 10px;
            overflow: hidden;
        }
        
        .comparison-table th {
            background: var(--gradient);
            color: white;
            padding: 1.2rem;
            text-align: left;
        }
        
        .comparison-table td {
            padding: 1rem 1.2rem;
            border-bottom: 1px solid #eee;
        }
        
        .comparison-table tr:nth-child(even) {
            background-color: #f9f7ff;
        }
        
        .comparison-table tr:last-child td {
            border-bottom: none;
        }
        
        /* リスク通知 */
        .risk-notice {
            background-color: #fff8f8;
            border-left: 4px solid #ff6b6b;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
            animation: pulse 2s infinite;
        }
        
        @keyframes pulse {
            0% {
                box-shadow: 0 0 0 0 rgba(255, 107, 107, 0.4);
            }
            70% {
                box-shadow: 0 0 0 10px rgba(255, 107, 107, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(255, 107, 107, 0);
            }
        }
        
        .risk-notice h3 {
            color: #d63031;
            margin-bottom: 0.5rem;
        }
        
        /* フッター */
        footer {
            background-color: var(--dark-purple);
            color: white;
            padding: 4rem 1rem 2rem;
        }
        
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        
        .footer-column h3 {
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.5rem;
        }
        
        .footer-column h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background-color: var(--accent-color);
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        
        .footer-links a {
            color: var(--light-purple);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        
        .footer-links a:hover {
            color: white;
        }
        
        .disclaimer {
            font-size: 0.9rem;
            margin-top: 3rem;
            color: #ccc;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 2rem;
        }
        
        /* アニメーション */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        /* レスポンシブデザイン */
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: var(--dark-purple);
                flex-direction: column;
                padding: 1rem 0;
                box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            }
            
            .nav-links.active {
                display: flex;
            }
            
            .nav-links li {
                margin: 0;
                text-align: center;
                padding: 0.8rem 0;
            }
            
            .mobile-menu {
                display: block;
            }
            
            .banner {
                height: 400px;
            }
            
            .slide h2 {
                font-size: 2rem;
            }
            
            .steps-container {
                flex-direction: column;
                gap: 2rem;
            }
            
            .steps-container::before {
                display: none;
            }
        }