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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans JP", sans-serif;
            line-height: 1.6;
            color: #f0f0f0;
            background: #1a1a1a;
        }

        /* Hero Section */
        .hero {
            width: 100%;
            margin: 0 auto;
            padding: 0;
            text-align: center;
            position: relative;
        }

        .hero-image-container {
            position: relative;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            overflow: visible;
        }

        .hero-layers {
            position: relative;
            width: 100%;
            padding-bottom: 141.67%; /* 1200x1700 aspect ratio */
        }

        .hero-layer {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: contain;
            transition: transform 0.5s ease;
        }

        /* Hover Animations */
        @keyframes gentle-shake {
            0%, 100% { transform: translateX(0) translateY(0); }
            25% { transform: translateX(-2px) translateY(-2px); }
            50% { transform: translateX(2px) translateY(2px); }
            75% { transform: translateX(-2px) translateY(2px); }
        }

        /* Layer Z-index */
        .layer-bg { z-index: 1; }
        .layer-logo { z-index: 2; }
        .layer-hikaru { z-index: 3; }
        .layer-daia { z-index: 4; }
        .layer-seika { z-index: 5; }
        .layer-fukidashi { z-index: 6; }
        .layer-qr { z-index: 7; }
        .layer-sale { z-index: 8; }
        .layer-winter { z-index: 9; }
        .layer-aori { z-index: 10; }

        /* Hover Effects */
        .hero-image-container:hover .layer-logo,
        .hero-image-container:hover .layer-sale,
        .hero-image-container:hover .layer-winter,
        .hero-image-container:hover .layer-aori {
            animation: gentle-shake 0.5s ease;
        }

        .hero-image-container:hover .layer-qr,
        .hero-image-container:hover .layer-fukidashi {
            transform: scale(1.1);
        }

        .hero-image-container:hover .layer-hikaru,
        .hero-image-container:hover .layer-daia,
        .hero-image-container:hover .layer-seika {
            transform: scale(1.05);
        }

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

        /* Keyart Container */
        .keyart-container {
            position: relative;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
        }

        .keyart-container::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at center,
                        transparent 40%,
                        rgba(0, 0, 0, 0.95) 100%);
            pointer-events: none;
            z-index: 1;
        }

        .keyart-image {
            width: 100%;
            height: auto;
            display: block;
        }

        .momo-logo {
            position: absolute;
            bottom: 40px;
            left: 40px;
            width: 600px;
            height: auto;
            transition: transform 0.3s ease;
            z-index: 2;
        }

        .momo-logo:hover {
            transform: scale(1.3) rotate(2deg);
        }

        /* Character Showcase */
        .character-showcase {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 60px;
        }

        .character-showcase img {
            width: 100%;
            height: auto;
            border-radius: 12px;
            transition: transform 0.3s ease;
            cursor: pointer;
            border: 2px solid #444;
        }

        .character-showcase img:hover {
            transform: scale(1.2);
            border-color: #ffb3d9;
            box-shadow: 0 8px 30px rgba(255, 179, 217, 0.5);
            z-index: 10;
        }

        .hero h1 {
            font-size: 48px;
            margin-bottom: 20px;
            color: #ffb3d9;
            font-weight: bold;
        }

        .hero p {
            font-size: 18px;
            color: #f0f0f0;
            max-width: 600px;
            margin: 0 auto 40px;
        }

        /* Store Buttons */
        .store-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin: 40px auto;
            max-width: 1200px;
            padding: 0 20px;
        }

        .store-button {
            display: inline-block;
            padding: 18px 50px;
            color: #fff;
            text-decoration: none;
            border-radius: 12px;
            font-size: 18px;
            font-weight: bold;
            transition: all 0.3s;
            backdrop-filter: blur(10px);
            border: 2px solid transparent;
            position: relative;
            overflow: hidden;
        }

        .store-button::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 0;
            height: 0;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.3);
            transform: translate(-50%, -50%);
            transition: width 0.6s, height 0.6s;
        }

        .store-button:hover::before {
            width: 300px;
            height: 300px;
        }

        .store-button:hover {
            transform: translateY(-3px);
        }

        .store-button.steam {
            background: linear-gradient(135deg, #ff6ec7 0%, #b83dff 100%);
            border-color: #ff6ec7;
            box-shadow: 0 4px 20px rgba(255, 110, 199, 0.4);
        }

        .store-button.steam:hover {
            box-shadow: 0 6px 30px rgba(255, 110, 199, 0.6);
            border-color: #fff;
        }

        .store-button.stove {
            background: linear-gradient(135deg, #ffb3d9 0%, #ff6b9d 100%);
            border-color: #ffb3d9;
            box-shadow: 0 4px 20px rgba(255, 179, 217, 0.4);
        }

        .store-button.stove:hover {
            box-shadow: 0 6px 30px rgba(255, 179, 217, 0.6);
            border-color: #fff;
        }

        /* Content Section */
        .content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 40px 20px;
        }

        .section {
            margin-bottom: 60px;
        }

        .section h2 {
            font-size: 32px;
            margin-bottom: 20px;
            border-bottom: 2px solid #ffb3d9;
            padding-bottom: 10px;
            text-align: center;
            color: #ffb3d9;
        }

        .section p {
            font-size: 16px;
            margin-bottom: 15px;
            line-height: 1.8;
            color: #d0d0d0;
        }

        .section-intro {
            max-width: 800px;
            margin: 0 auto 30px;
            text-align: center;
        }

        /* 3 Column Card Grid */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 30px;
        }

        .card {
            background: #2a2a2a;
            border: 2px solid #444;
            border-radius: 12px;
            overflow: hidden;
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(255, 179, 217, 0.3);
            border-color: #ffb3d9;
        }

        .card-link {
            text-decoration: none;
            color: inherit;
            cursor: pointer;
        }

        .card-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .card-content {
            padding: 20px;
        }

        .card-content h3 {
            font-size: 18px;
            margin-bottom: 10px;
            color: #ffb3d9;
        }

        .card-content .date {
            font-size: 13px;
            color: #999;
            margin-bottom: 10px;
        }

        .card-content p {
            font-size: 14px;
            color: #d0d0d0;
            line-height: 1.6;
            margin: 0;
        }

        .card-content strong {
            color: #ffb3d9;
        }

        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-top: 30px;
        }

        .feature-item {
            padding: 20px;
            border: 1px solid #444;
            border-radius: 8px;
            background: #2a2a2a;
            transition: border-color 0.3s;
        }

        .feature-item:hover {
            border-color: #ffb3d9;
        }

        .feature-item h3 {
            font-size: 20px;
            margin-bottom: 10px;
            color: #ffb3d9;
        }

        .feature-item p {
            font-size: 14px;
            color: #d0d0d0;
        }

        /* Video Section */
        .video-container {
            position: relative;
            padding-bottom: 56.25%; /* 16:9 aspect ratio */
            height: 0;
            overflow: hidden;
            max-width: 100%;
            margin: 30px auto;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }

        .video-container iframe {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            border: none;
            border-radius: 8px;
        }

        /* Character Card Specific */
        .character-card-image {
            width: 100%;
            height: 560px;
            object-fit: cover;
            object-position: center;
            background: transparent;
        }

        .card-content .subtitle {
            font-size: 13px;
            color: #666;
            margin-bottom: 10px;
            font-style: italic;
        }

        /* Guideline Link */
        .guideline-link {
            text-align: center;
            margin: 60px 0;
            padding: 30px;
            background: #2a2a2a;
            border-radius: 8px;
            border: 1px solid #444;
        }

        .guideline-link h2 {
            font-size: 24px;
            margin-bottom: 15px;
            border: none;
            color: #ffb3d9;
        }

        .guideline-link p {
            color: #d0d0d0;
        }

        .guideline-link a {
            display: inline-block;
            padding: 12px 30px;
            background: transparent;
            color: #ffb3d9;
            text-decoration: none;
            border: 2px solid #ffb3d9;
            border-radius: 8px;
            font-weight: bold;
            transition: all 0.3s;
        }

        .guideline-link a:hover {
            background: #ffb3d9;
            color: #1a1a1a;
        }

        /* Footer */
        footer {
            text-align: center;
            padding: 40px 20px;
            background: #0d0d0d;
            margin-top: 60px;
            border-top: 1px solid #333;
        }

        footer p {
            color: #999;
            font-size: 14px;
        }

        footer a {
            color: #ffb3d9;
            text-decoration: none;
        }

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

        /* Language Switcher */
        .language-switcher {
            text-align: center;
            margin: 30px 0;
            padding: 15px 0;
            position: relative;
        }

        .language-switcher ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            justify-content: center;
            flex-wrap: nowrap;
            gap: 10px;
        }

        .language-switcher li {
            margin: 0;
        }

        .language-switcher a {
            display: block;
            padding: 8px 15px;
            border-radius: 8px;
            background: #2a2a2a;
            border: 1px solid #444;
            font-size: 14px;
            text-decoration: none;
            color: #d0d0d0;
            transition: all 0.3s;
            white-space: nowrap;
        }

        .language-switcher a:hover {
            background: #ffb3d9;
            color: #1a1a1a;
            border-color: #ffb3d9;
        }

        .language-switcher a.current {
            background: #ffb3d9;
            color: #1a1a1a;
            border-color: #ffb3d9;
        }

        /* News Collapsible */
        .news-collapsible {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .news-collapsible.expanded {
            max-height: 2000px;
        }

        .read-more-btn {
            display: inline-block;
            margin-top: 10px;
            padding: 8px 20px;
            background: transparent;
            color: #ffb3d9;
            border: 1px solid #ffb3d9;
            border-radius: 6px;
            cursor: pointer;
            font-size: 14px;
            transition: all 0.3s;
        }

        .read-more-btn:hover {
            background: #ffb3d9;
            color: #1a1a1a;
        }

        /* Goods Section */
        .goods-image-container {
            width: 100%;
            overflow: hidden;
            position: relative;
            height: 200px;
            margin-top: 30px;
            border-radius: 12px;
            border: 2px solid #444;
            transition: all 0.3s ease;
        }

        .goods-image-container:hover {
            border-color: #ffb3d9;
            box-shadow: 0 8px 30px rgba(255, 179, 217, 0.5);
            height: 650px;
        }

        .goods-image-container img {
            width: 100%;
            height: auto;
            display: block;
            position: absolute;
            top: -35%;
            left: 0;
            transition: top 0.3s ease;
        }

        .goods-image-container:hover img {
            top: 0;
        }

        /* Responsive */
        @media (max-width: 768px) {
            /* フォントサイズ調整 */
            body {
                font-size: 16px;
            }

            .hero h1 {
                font-size: 32px;
            }

            .hero p {
                font-size: 16px;
            }

            .section h2 {
                font-size: 28px;
                margin-bottom: 15px;
                padding-bottom: 8px;
            }

            .section p {
                font-size: 15px;
                line-height: 1.7;
            }

            /* 余白・パディング調整 */
            .content {
                padding: 15px;
            }

            .section {
                margin-bottom: 40px;
            }

            /* タッチターゲットサイズ（最低44x44px） */
            .store-buttons {
                flex-direction: column;
                gap: 15px;
                padding: 0 15px;
            }

            .store-button {
                padding: 16px 40px;
                font-size: 16px;
                min-height: 44px;
            }

            /* Momo Logo最適化 */
            .momo-logo {
                width: 250px;
                bottom: 20px;
                left: 20px;
            }

            /* ホバーエフェクト無効化（スマホ） */
            .momo-logo:hover {
                transform: none;
            }

            .hero-image-container:hover .layer-logo,
            .hero-image-container:hover .layer-sale,
            .hero-image-container:hover .layer-winter,
            .hero-image-container:hover .layer-aori {
                animation: none;
            }

            .hero-image-container:hover .layer-qr,
            .hero-image-container:hover .layer-fukidashi,
            .hero-image-container:hover .layer-hikaru,
            .hero-image-container:hover .layer-daia,
            .hero-image-container:hover .layer-seika {
                transform: none;
            }

            /* カードグリッド */
            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .card-content {
                padding: 15px;
            }

            .card-content h3 {
                font-size: 17px;
            }

            .card-content p {
                font-size: 15px;
            }

            /* 画像サイズ最適化 */
            .card-image {
                height: 180px;
            }

            .character-card-image {
                height: auto;
                min-height: 300px;
                object-fit: contain;
            }

            /* キャラクターショーケース */
            .character-showcase {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .character-showcase img:hover {
                transform: scale(1.05);
            }

            /* 言語切り替え: ドロップダウン表示 */
            .language-switcher ul {
                display: none;
            }

            .language-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
                gap: 8px;
                padding: 12px 20px;
                background: #2a2a2a;
                border: 1px solid #444;
                border-radius: 8px;
                cursor: pointer;
                min-height: 44px;
                font-size: 16px;
                color: #f0f0f0;
                transition: all 0.3s ease;
            }

            .language-toggle:hover {
                background: #3a3a3a;
                border-color: #ffb3d9;
            }

            .language-toggle:active {
                background: #ffb3d9;
                color: #1a1a1a;
            }

            .language-toggle .arrow {
                transition: transform 0.3s ease;
            }

            .language-toggle.active .arrow {
                transform: rotate(180deg);
            }

            .language-dropdown {
                display: none;
                position: absolute;
                left: 0;
                right: 0;
                margin: 10px 15px 0;
                background: #2a2a2a;
                border: 1px solid #444;
                border-radius: 8px;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease;
                z-index: 100;
            }

            .language-dropdown.active {
                display: block;
                max-height: 400px;
                overflow-y: auto;
            }

            .language-dropdown a {
                display: block;
                padding: 12px 20px;
                border-radius: 0;
                border: none;
                border-bottom: 1px solid #333;
                min-height: 44px;
                font-size: 16px;
            }

            .language-dropdown a:last-child {
                border-bottom: none;
            }

            .language-dropdown a:hover {
                background: #3a3a3a;
            }

            .language-dropdown a.current {
                background: #ffb3d9;
                color: #1a1a1a;
            }

            /* 折りたたみボタン */
            .read-more-btn {
                padding: 12px 30px;
                font-size: 15px;
                min-height: 44px;
            }

            /* ガイドラインリンク */
            .guideline-link {
                padding: 20px;
                margin: 40px 0;
            }

            .guideline-link h2 {
                font-size: 22px;
            }

            .guideline-link a {
                padding: 16px 40px;
                font-size: 16px;
                min-height: 44px;
            }

            /* グッズ画像 */
            .goods-image-container {
                height: 200px;
            }

            .goods-image-container:hover {
                height: 200px;
                box-shadow: none;
            }

            .goods-image-container img {
                position: static;
                top: auto;
            }

            .goods-image-container:hover img {
                top: auto;
            }

            /* フィーチャーグリッド */
            .features {
                gap: 20px;
            }

            .feature-item {
                padding: 15px;
            }

            .feature-item h3 {
                font-size: 18px;
            }

            /* フッター */
            footer {
                padding: 30px 15px;
            }
        }

        /* PC・タブレット（769px以上）では通常表示 */
        @media (min-width: 769px) {
            .language-toggle {
                display: none;
            }

            .language-dropdown {
                display: none;
            }
        }