/* ベーススタイルとリセット */
        html {
            scroll-behavior: smooth;
        }
        body {
            color: #2C2C2C;
            background-color: #FFFFFF;
            line-height: 1.8;
            font-feature-settings: "palt";
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        /* スクロールアニメーション用クラス */
        .fade-in-up {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 1s cubic-bezier(0.2, 0.8, 0.2, 1), transform 1s cubic-bezier(0.2, 0.8, 0.2, 1);
        }
        .fade-in-up.is-visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* カスタムボタンスタイル */
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid #2C2C2C;
            background-color: transparent;
            color: #2C2C2C;
            padding: 1rem 3rem;
            font-size: 0.875rem;
            letter-spacing: 0.1em;
            transition: all 0.4s ease;
            text-decoration: none;
        }
        .btn-outline:hover {
            background-color: #2C2C2C;
            color: #FFFFFF;
        }
        .btn-solid {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid #2C2C2C;
            background-color: #2C2C2C;
            color: #FFFFFF;
            padding: 1rem 3rem;
            font-size: 0.875rem;
            letter-spacing: 0.1em;
            transition: all 0.4s ease;
            text-decoration: none;
        }
        .btn-solid:hover {
            background-color: #4A4A4A;
            border-color: #4A4A4A;
        }

        /* 画像ホバーエフェクト */
        .image-zoom-container {
            overflow: hidden;
        }
        .image-zoom-container img {
            transition: transform 0.7s ease;
        }
        .image-zoom-container:hover img {
            transform: scale(1.05);
        }

        /* ハンバーガーメニュー */
        #sp-menu {
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }
        #sp-menu.hidden-menu {
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
        }
        #sp-menu.active-menu {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
        }

        /* 線 */
        .separator-line {
            height: 1px;
            background-color: #EAE8E3;
            width: 100%;
        }