body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', Meiryo, sans-serif; background-color: #faf7f2; color: #2f2e2c; }
    h1, h2, h3, h4, h5, h6, .brand-serif { font-family: 'Hiragino Mincho ProN', 'Yu Mincho', YuMincho, Georgia, serif; }
    .mobile-menu { display: none; opacity: 0; transform: translateY(-10px); transition: all 0.3s ease; background-color: #fff; padding: 0.5rem; border: 1px solid #e8e0d5; }
    .mobile-menu.active { display: block; opacity: 1; transform: translateY(0); }
    .fade-in { animation: fadeIn 0.3s ease forwards; }
    @keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
    .modal-overlay.hidden { display: none !important; }
    .input-error { border-color: #b33a3a !important; }
    .error-msg { color: #b33a3a; font-size: 0.75rem; margin-top: 0.25rem; display: none; }
    .error-msg.visible { display: block; }