details>summary {
            list-style: none;
        }

        details>summary::-webkit-details-marker {
            display: none;
        }

        html {
            scroll-behavior: smooth;
        }

        body > section,
        body > footer {
            padding-left: 30px;
            padding-right: 30px;
        }

        /* Анимации */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
            }

            to {
                opacity: 1;
            }
        }

        @keyframes pulse {

            0%,
            100% {
                transform: scale(1);
            }

            50% {
                transform: scale(1.02);
            }
        }

        @keyframes float {

            0%,
            100% {
                transform: translateY(0px);
            }

            50% {
                transform: translateY(-10px);
            }
        }

        @keyframes slideInLeft {
            from {
                opacity: 0;
                transform: translateX(-30px);
            }

            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        @keyframes slideInRight {
            from {
                opacity: 0;
                transform: translateX(30px);
            }

            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        @keyframes scaleIn {
            from {
                opacity: 0;
                transform: scale(0.9);
            }

            to {
                opacity: 1;
                transform: scale(1);
            }
        }

        .animate-fade-in-up {
            animation: fadeInUp 0.6s ease-out forwards;
        }

        .animate-fade-in {
            animation: fadeIn 0.8s ease-out forwards;
        }

        .animate-pulse-subtle {
            animation: pulse 2s ease-in-out infinite;
        }

        .animate-float {
            animation: float 3s ease-in-out infinite;
        }

        .stagger-1 {
            animation-delay: 0.1s;
            opacity: 0;
        }

        .stagger-2 {
            animation-delay: 0.2s;
            opacity: 0;
        }

        .stagger-3 {
            animation-delay: 0.3s;
            opacity: 0;
        }

        .stagger-4 {
            animation-delay: 0.4s;
            opacity: 0;
        }

        /* Hover эффекты */
        .hover-lift {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .hover-lift:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
        }

        .btn-hover {
            transition: all 0.2s ease;
        }

        .btn-hover:hover {
            transform: scale(1.05);
        }

        .btn-hover:active {
            transform: scale(0.98);
        }

        /* Scroll reveal */
        .scroll-reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.6s ease-out;
        }

        .scroll-reveal.revealed {
            opacity: 1;
            transform: translateY(0);
        }

        /* Gradient text */
        .gradient-text {
            background: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* Details arrow animation */
        details summary i {
            transition: transform 0.3s ease;
        }

        details[open] summary i {
            transform: rotate(180deg);
        }

        /* Card glow effect on hover */
        .card-glow {
            position: relative;
            overflow: hidden;
        }

        .card-glow::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
            transition: left 0.5s;
        }

        .card-glow:hover::before {
            left: 100%;
        }

        /* Smooth underline animation */
        .link-underline {
            position: relative;
        }

        .link-underline::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: currentColor;
            transition: width 0.3s ease;
        }

        .link-underline:hover::after {
            width: 100%;
        }

        /* Pricing card pulse animation */
        @keyframes cardPulse {

            0%,
            100% {
                box-shadow: 0 20px 25px -5px rgba(16, 185, 129, 0.1), 0 10px 10px -5px rgba(16, 185, 129, 0.04);
            }

            50% {
                box-shadow: 0 25px 30px -5px rgba(16, 185, 129, 0.2), 0 15px 15px -5px rgba(16, 185, 129, 0.08);
            }
        }

        .pricing-featured {
            animation: cardPulse 3s ease-in-out infinite;
        }

        /* Icon bounce on hover */
        .icon-bounce:hover i {
            animation: iconBounce 0.6s ease;
        }

        @keyframes iconBounce {

            0%,
            100% {
                transform: translateY(0);
            }

            25% {
                transform: translateY(-5px);
            }

            50% {
                transform: translateY(0);
            }

            75% {
                transform: translateY(-3px);
            }
        }

        /* Gradient animation */
        @keyframes gradientShift {
            0% {
                background-position: 0% 50%;
            }

            50% {
                background-position: 100% 50%;
            }

            100% {
                background-position: 0% 50%;
            }
        }

        .gradient-animate {
            background-size: 200% 200%;
            animation: gradientShift 5s ease infinite;
        }

        /* Mobile menu animation */
        #mobile-menu {
            animation: slideDown 0.4s ease-out;
        }

        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Navbar smooth transitions */
        #navbar,
        #nav-content,
        #nav-wrapper {
            transition: all 0.6s cubic-bezier(0.25, 1, 0.5, 1) !important;
            will-change: width, max-width, background-color, border-color, border-radius;
        }

        #navbar * {
            transition: all 0.6s cubic-bezier(0.25, 1, 0.5, 1);
        }

        /* Backdrop blur support */
        @supports (backdrop-filter: blur(12px)) or (-webkit-backdrop-filter: blur(12px)) {
            .navbar-blur {
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
            }
        }

        /* Footer link hover effect */
        footer a {
            position: relative;
        }

        footer a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 1px;
            background: currentColor;
            transition: width 0.3s ease;
        }

        footer a:hover::after {
            width: 100%;
        }