body {
            font-family: 'Zen Maru Gothic', sans-serif;
            background-color: #f9fafb; /* gray-50 */
            color: #374151; /* gray-700 */
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        .font-accent {
            font-family: 'Fredoka', sans-serif;
        }

        /* ユーティリティ */
        .glass-nav {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }