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

        body {
            font-family: 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', 'Meiryo', sans-serif;
            background: linear-gradient(135deg, #0f2027 0%, #203a43 25%, #2c5364 50%, #1e3c72 75%, #2a5298 100%);
            min-height: 100vh;
            color: #ffffff;
        }

        /* ヘッダー・ナビゲーション */
        .header {
            background: rgba(15, 32, 39, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 15px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .nav-links {
            display: flex;
            gap: 30px;
            list-style: none;
        }

        .nav-links a {
            color: #a8d0ff;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 8px 16px;
            border-radius: 8px;
        }

        .nav-links a:hover {
            background: rgba(168, 208, 255, 0.1);
            color: #ffffff;
        }

        .default-links a {
            color: #a8d0ff;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 8px 16px;
            border-radius: 8px;
        }

        .default-links a:hover {
            background: rgba(168, 208, 255, 0.1);
            color: #ffffff;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
        }

        .hamburger span {
            width: 25px;
            height: 3px;
            background: #a8d0ff;
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(7px, 7px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(7px, -7px);
        }

        /* メインコンテンツ */
        .main-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 40px 10px;
        }

        .hero {
            text-align: center;
            padding: 60px 20px;
            margin-bottom: 40px;
        }

        h1 {
            font-size: 3rem;
            margin-bottom: 15px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            font-weight: 700;
            letter-spacing: 2px;
        }

        .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(168, 208, 255, 0.7);
            font-weight: 300;
        }

        .section {
            background: rgba(255, 255, 255, 0.08);
            border-radius: 15px;
            padding: 35px;
            margin-bottom: 30px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.3s ease;
        }

        .section:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
        }

        h2 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: #a8d0ff;
            font-weight: 600;
            border-bottom: 2px solid rgba(168, 208, 255, 0.3);
            padding-bottom: 12px;
        }

        .section p {
            line-height: 1.8;
            color: #e0e7ff;
            margin-bottom: 20px;
            white-space: pre-line;
        }

        .btn {
            display: inline-block;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 15px 35px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
            margin: 10px 10px 10px 0;
        }

        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 35px rgba(102, 126, 234, 0.6);
        }

        .minibtn {
            display: inline-block;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 10px 20px;
            border-radius: 20px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
            margin: 3px 3px 3px 0;
        }

        .minibtn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 35px rgba(102, 126, 234, 0.6);
        }

        /* おすすめボックス */
        .recommend-boxes {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
            margin-top: 25px;
        }

        .tworecommend-boxes {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(500px, 2fr));
            gap: 50px;
            margin-top: 50px;
        }

        .recommend-box {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(168, 208, 255, 0.2);
            border-radius: 12px;
            padding: 30px;
            text-align: center;
            transition: all 0.3s ease;
        }

        .recommend-box:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-5px);
        }

        .recommend-icon {
            font-size: 3rem;
            margin-bottom: 15px;
            object-fit: cover;
            object-position: center;
        }

        .recommend-box p {
            color: #a8d0ff;
            font-weight: 500;
            margin: 0;
            overflow-wrap: break-word;
        }

        .recommend-box h3 {
            font-size: 1.4rem;
            color: #a8d0ff;
            margin: 0;
            overflow-wrap: break-word;
        }

        /* フッター */
        .footer {
            background: rgba(15, 32, 39, 0.9);
            backdrop-filter: blur(10px);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 25px 20px;
            margin-top: 60px;
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .footer a {
            color: rgba(168, 208, 255, 0.6);
            text-decoration: none;
            font-size: 0.85rem;
            transition: all 0.3s ease;
        }

        .footer a:hover {
            color: #a8d0ff;
        }

        .footer p {
            color: rgba(168, 208, 255, 0.6);
            font-size: 0.85rem;
            margin: 0;
        }

        /* レスポンシブ */
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: rgba(15, 32, 39, 0.98);
                flex-direction: column;
                padding: 20px;
                gap: 0;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }

            .nav-links.active {
                max-height: 300px;
            }

            .nav-links a {
                padding: 15px;
                display: block;
            }

            .hamburger {
                display: flex;
            }

            h1 {
                font-size: 2rem;
            }

            .hero {
                padding: 40px 20px;
            }

            h2 {
                font-size: 1.5rem;
            }

            .section {
                padding: 25px 10px;
            }

            .recommend-boxes {
                grid-template-columns: 1fr;
            }

            .tworecommend-boxes {
                grid-template-columns: 1fr;
            }
            .recommend-box {
            padding: 30px 5px;
        }

            .footer-content {
                flex-direction: column;
                gap: 10px;
            }
        }

        @media (max-width: 480px) {
            h1 {
                font-size: 1.6rem;
            }

            .section {
                padding: 20px 5px;
            }

            .btn {
                padding: 12px 25px;
                font-size: 0.9rem;
            }
            .minibtn {
                padding: 8px 14px;
                font-size: 0.9rem;
            }
        }