/* カスタムスタイル */
        body {
            color: #404040;
            line-height: 1.8;
            background-color: #ffffff;
            -webkit-font-smoothing: antialiased;
        }
        h1, h2, h3, h4, h5, h6 {
            color: #171717;
            font-weight: 700;
            line-height: 1.4;
            letter-spacing: 0.05em;
        }
        html { scroll-behavior: smooth; }
        
        .section-padding {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }
        @media (min-width: 1024px) {
            .section-padding {
                padding-top: 8rem;
                padding-bottom: 8rem;
            }
        }

        /* 追従ヘッダー */
        #sticky-header {
            transform: translateY(-100%);
            transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        }
        #sticky-header.is-visible {
            transform: translateY(0);
        }

        /* アニメーション */
        .fade-in-up {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .fade-in-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* 規約・ポリシー用の見出しスタイル */
        .policy-h2 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #1a365d;
            border-bottom: 2px solid #1a365d;
            padding-bottom: 0.75rem;
            margin-top: 4rem;
            margin-bottom: 1.5rem;
        }
        @media (min-width: 768px) {
            .policy-h2 {
                font-size: 1.5rem;
            }
        }
        .policy-h3 {
            font-size: 1.125rem;
            font-weight: 700;
            color: #171717;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            padding-left: 0.75rem;
            border-left: 4px solid #d4d4d4;
        }