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;
        }

        .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);
        }

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

        .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; }

        .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; }

        /* パンくずリスト用 CSS */
        nav[aria-label="breadcrumb"] ol {
            gap: 0.5rem;
            align-items: center;
            display: flex;
            flex-wrap: wrap;
        }
        nav[aria-label="breadcrumb"] ol > li {
            display: flex;
            align-items: center;
        }

        /* FAQアコーディオン用 */
        details > summary { list-style: none; cursor: pointer; }
        details > summary::-webkit-details-marker { display: none; }
        
        /* テーブルの装飾 */
        .specs-table th {
            width: 30%;
            background-color: #F9F8F6;
            font-weight: 500;
            text-align: left;
            padding: 1.25rem;
            border-bottom: 1px solid #EAE8E3;
            font-size: 0.875rem;
            letter-spacing: 0.08em;
        }
        .specs-table td {
            width: 70%;
            padding: 1.25rem;
            border-bottom: 1px solid #EAE8E3;
            font-size: 0.875rem;
            letter-spacing: 0.08em;
            color: #595959;
            font-weight: 300;
            line-height: 2;
        }

        #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; }