/******* Do not edit this file *******
Simple Custom CSS and JS - by Silkypress.com
Saved: Oct 04 2025 | 04:19:12 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', sans-serif;
            background: #f5f5f5;
            padding: 20px;
            line-height: 1.6;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: white;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            overflow: hidden;
        }

        /* デスクトップレイアウト */
        .content-wrapper {
            display: flex;
            align-items: stretch;
            min-height: 500px;
        }

        .image-section {
            flex: 1;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 40px;
            position: relative;
        }

        .image-placeholder {
            width: 100%;
            max-width: 400px;
            aspect-ratio: 4/3;
            background: rgba(255,255,255,0.2);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.2rem;
            backdrop-filter: blur(10px);
            border: 2px solid rgba(255,255,255,0.3);
        }

        .info-section {
            flex: 1;
            padding: 60px 50px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .title {
            font-size: 2.5rem;
            font-weight: 700;
            color: #333;
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .concept {
            font-size: 1.1rem;
            color: #666;
            margin-bottom: 30px;
            line-height: 1.8;
        }

        .meta-info {
            display: flex;
            align-items: center;
            gap: 15px;
            color: #999;
            font-size: 0.95rem;
        }

        .time-icon {
            width: 20px;
            height: 20px;
        }

        .creation-time {
            font-weight: 500;
        }

        /* モバイル用ボタン（デフォルトは非表示） */
        .mobile-toggle-btn {
            display: none;
            width: 100%;
            padding: 15px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-top: 20px;
            position: relative;
        }

        .mobile-toggle-btn:active {
            transform: scale(0.98);
        }

        .mobile-toggle-btn.active {
            background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
        }

        .btn-icon {
            width: 24px;
            height: 24px;
            transition: transform 0.3s ease;
        }

        .mobile-toggle-btn.active .btn-icon {
            transform: rotate(180deg);
        }

        /* モバイル用情報エリア */
        .mobile-info-area {
            display: none;
            padding: 30px 20px;
            background: white;
            animation: slideDown 0.3s ease;
        }

        .mobile-info-area.show {
            display: block;
        }

        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* タブレット・スマホ対応 */
        @media (max-width: 768px) {
            body {
                padding: 10px;
            }

            .content-wrapper {
                flex-direction: column;
                min-height: auto;
            }

            .image-section {
                padding: 40px 20px;
                min-height: 300px;
            }

            .image-placeholder {
                max-width: 100%;
            }

            /* デスクトップの情報セクションを非表示 */
            .info-section {
                display: none;
            }

            /* モバイル用ボタンを表示 */
            .mobile-toggle-btn {
                display: block;
            }

            /* モバイル用情報エリアのスタイル調整 */
            .mobile-info-area .title {
                font-size: 1.8rem;
                text-align: center;
            }

            .mobile-info-area .concept {
                font-size: 1rem;
                text-align: center;
            }

            .mobile-info-area .meta-info {
                justify-content: center;
            }
        }

        /* 小さいスマホ対応 */
        @media (max-width: 480px) {
            .image-section {
                padding: 30px 15px;
            }

            .mobile-info-area .title {
                font-size: 1.5rem;
            }

            .mobile-info-area .concept {
                font-size: 0.95rem;
            }

            .mobile-toggle-btn {
                padding: 12px;
                font-size: 0.9rem;
            }
        }