/* ==========================================================================
           ESTILOS CSS - ZK911
           ========================================================================== */
        
        /* Variables y Reset */
        :root {
            --primary: #1B2632;
            --secondary: #FFC107;
            --accent: #2DD10E;
            --dark: #151B21;
            --light: #F5F5F5;
            --white: #FFFFFF;
            --gray: #7F7F7F;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --shadow-hover: 0 8px 25px rgba(0,0,0,0.2);
            --radius: 8px;
            --transition: all 0.3s ease;
                    --wa-brand: #25D366; 
        --wa-deep: #075E54;  
        --wa-white: #ffffff;
        --wa-shadow: rgba(0, 0, 0, 0.15);
        }
        
    .wa-container {
        position: fixed;
        right: 20px;
        /* POSICIÓN: 200px desde la parte inferior */
        bottom: 200px; 
        z-index: 9999;
        display: flex;
        flex-direction: column;
        align-items: flex-end;
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    }

    /* Burbuja de mensaje gancho */
    .wa-message {
        background: var(--wa-white);
        color: #333;
        padding: 12px 18px;
        border-radius: 12px;
        box-shadow: 0 8px 20px var(--wa-shadow);
        margin-bottom: 15px;
        font-size: 14px;
        font-weight: 500;
        line-height: 1.4;
        border: 1px solid rgba(0,0,0,0.05);
        opacity: 0;
        visibility: hidden;
        transform: translateY(10px);
        transition: all 0.5s ease-out;
        max-width: 220px;
        text-align: right;
        position: relative;
    }

    .wa-message::after {
        content: '';
        position: absolute;
        bottom: -8px;
        right: 20px;
        border-left: 8px solid transparent;
        border-right: 8px solid transparent;
        border-top: 8px solid var(--wa-white);
    }

    /* Botón de WhatsApp con el número */
    .wa-button {
        display: flex;
        align-items: center;
        gap: 10px;
        background-color: var(--wa-brand);
        color: var(--wa-white);
        padding: 14px 22px;
        border-radius: 50px;
        text-decoration: none;
        font-weight: 600;
        font-size: 16px;
        box-shadow: 0 10px 25px rgba(37, 211, 102, 0.3);
        transition: all 0.3s ease;
    }

    .wa-button svg {
        width: 22px;
        height: 22px;
        fill: currentColor;
    }

    .wa-button:hover {
        background-color: var(--wa-deep);
        transform: scale(1.08) translateY(-3px);
        box-shadow: 0 12px 30px rgba(7, 94, 84, 0.4);
    }

    .wa-message.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    @media (max-width: 768px) {
        .wa-container { 
            right: 15px; 
            bottom: 200px; /* Se mantiene consistente en móvil */
        }
        .wa-button { padding: 12px 18px; font-size: 14px; }
    }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            color: var(--primary);
            line-height: 1.6;
            background: var(--white);
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* Header */
        .header {
            background: var(--white);
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }
        
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--primary);
            font-weight: 700;
            font-size: 1.2rem;
        }
        
        .logo-version {
            background: var(--secondary);
            color: var(--primary);
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 500;
        }
        
        /* Menú móvil */
        .menu-toggle {
            display: none;
            flex-direction: column;
            justify-content: space-between;
            width: 30px;
            height: 21px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 0;
        }
        
        .menu-toggle span {
            display: block;
            height: 3px;
            width: 100%;
            background: var(--primary);
            border-radius: 3px;
            transition: var(--transition);
        }
        
		
		
        /* Navegación */
        .main-nav {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        
        .nav-dropdown {
            position: relative;
        }
        
        .nav-dropdown-btn {
            background: none;
            border: none;
            color: var(--primary);
            font-size: 1rem;
            cursor: pointer;
            padding: 8px 16px;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        
        .nav-dropdown-btn:hover {
            background: var(--light);
        }
        
        .nav-dropdown-content {
            position: absolute;
            top: 100%;
            left: 0;
            background: var(--white);
            min-width: 250px;
            box-shadow: var(--shadow-hover);
            border-radius: var(--radius);
            padding: 10px 0;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: var(--transition);
            z-index: 1000;
        }
        
        .nav-dropdown-content.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        
        .nav-dropdown-content a {
            display: block;
            padding: 10px 20px;
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        
        .nav-dropdown-content a:hover {
            background: var(--light);
            color: var(--secondary);
        }
        
        .nav-link {
            color: var(--primary);
            text-decoration: none;
            padding: 8px 16px;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        
        .nav-link:hover {
            background: var(--light);
            color: var(--secondary);
        }
        
        /* Botón Ticket */
        .btn-ticket {
            background: linear-gradient(135deg, var(--secondary) 0%, #ff8f00 100%);
            color: var(--primary);
            padding: 10px 20px;
            border-radius: var(--radius);
            text-decoration: none;
            font-weight: 700;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(255, 193, 7, 0.3);
            position: relative;
            overflow: hidden;
        }
        
        .btn-ticket:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 193, 7, 0.4);
        }
        
        /* Hero Section */
        .hero {
            background: linear-gradient(rgba(27, 38, 50, 0.9), rgba(27, 38, 50, 0.9)), url('images/soporte-tecnico-biometrico-zkteco-hikvision-dahua.jpg');
            background-size: cover;
            background-position: center;
            color: var(--white);
            padding: 100px 0;
            text-align: center;
            min-height: 600px;
            display: flex;
            align-items: center;
        }
        
        .hero-content {
            background: rgba(27, 38, 50, 0.9);
            padding: 50px;
            border-radius: var(--radius);
            max-width: 800px;
            margin: 0 auto;
        }
        
        .hero-title {
            font-size: 2.5rem;
            margin-bottom: 25px;
            line-height: 1.2;
            text-transform: uppercase;
        }
        
        .hero-subtitle {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 40px;
            color: rgba(255, 255, 255, 0.95);
        }
        
        .hero-subtitle strong {
            color: var(--secondary);
            font-weight: 700;
        }
        
        /* Imágenes para servicios */
        .service-img-container {
            width: 100%;
            height: 250px;
            overflow: hidden;
            border-radius: var(--radius) var(--radius) 0 0;
            margin-bottom: 20px;
        }
        
        .service-img {
            width: 100%;
            height: 100%;
            object-fit: cover;

            transition: transform 0.5s ease;
        }
        
        .service-card:hover .service-img {
            transform: scale(1.05);
        }
        
        /* Botones */
        .btn {
            display: inline-block;
            padding: 14px 35px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        
        .btn-primary {
            background: var(--secondary);
            color: var(--primary);
            position: relative;
            overflow: hidden;
            animation: pulse 2s infinite;
        }
        
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }
        
        .btn-primary:hover {
            background: #ffb300;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(255, 193, 7, 0.3);
        }
        
        /* Botón especial estilo original */
        .special-btn {
            display: inline-block;
            background-color: #FFC107;
            border-radius: 14px;
            padding: 0 3rem;
            user-select: none;
            transform-origin: 0 0;
            transition: transform .3s ease-in-out;
            position: relative;
            overflow: hidden;
            text-decoration: none;
            color: #1B2632;
            line-height: 2.8;
            font-weight: 700;
            text-transform: uppercase;
            font-size: 1.1rem;
            letter-spacing: 1px;
        }
        
        .special-btn:before, .special-btn:after {
            position: absolute;
            background-color: #FFC107;
            content: ' ';
            height: .15rem;
            border-radius: .15rem;
            width: 1.4rem;
            top: -.7rem;
            left: -1.5rem;
            transform: rotate(45deg);
            opacity: 0;
            transition: all .2s ease-in-out;
        }
        
        .special-btn:after {
            left: initial;
            right: -1.5rem;
            transform: rotate(-45deg);
        }
        
        .special-btn .btn-title:before, .special-btn .btn-title:after {
            position: absolute;
            background-color: #FFC107;
            content: ' ';
            height: .15rem;
            border-radius: .15rem;
            width: 1.4rem;
            bottom: -.7rem;
            left: -1.5rem;
            transform: rotate(-45deg);
            opacity: 0;
            transition: all .2s ease-in-out;
        }
        
        .special-btn .btn-title:after {
            left: initial;
            right: -1.5rem;
            transform: rotate(45deg);
        }
        
        .special-btn:hover {
            cursor: pointer;
            transition: transform .05s ease-in-out;
            animation: life-scale .4s;
        }
        
        .special-btn:hover:before, .special-btn:hover:after {
            animation: life-lines .4s;
        }
        
        .special-btn:hover:before {
            transform: rotate(45deg) translateX(-1rem);
        }
        
        .special-btn:hover:after {
            transform: rotate(-45deg) translateX(1rem);
        }
        
        .special-btn:hover .btn-title:before, .special-btn:hover .btn-title:after {
            animation: life-lines .4s;
        }
        
        .special-btn:hover .btn-title:before {
            transform: rotate(-45deg) translateX(-1rem);
        }
        
        .special-btn:hover .btn-title:after {
            transform: rotate(45deg) translateX(1rem);
        }
        
        @keyframes life-lines {
            0% { opacity: 0; }
            50% { opacity: 1; }
            100% { opacity: 0; }
        }
        
        @keyframes life-scale {
            0% { transform: scale(1); }
            50% { transform: scale(0.98); }
            100% { transform: scale(1); }
        }
        
        /* Botón contacto especial */
        .contact-btn {
            position: relative;
            z-index: 2;
            width: 173px;
            height: 50px;
            color: #1B2632;
            font-size: 15px;
            line-height: 50px;
            letter-spacing: 1px;
            text-align: center;
            transition: all 0.3s ease-in-out;
            cursor: pointer;
            background: none;
            border: none;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        
        .contact-btn:before {
            position: absolute;
            z-index: -1;
            top: 0;
            left: 0;
            content: '';
            display: block;
            width: 173px;
            height: 50px;
            background: #FFC107;
            transform: translate(0, 0);
            transition: all 0.3s ease-in-out;
            box-shadow: 2px 2px 4px 0px rgba(0, 0, 0, 0.1);
        }
        
        .contact-btn:after {
            position: absolute;
            z-index: -2;
            top: 0;
            left: 0;
            content: '';
            display: block;
            width: 173px;
            height: 50px;
            background: #1B2632;
            transform: translate(13px, 12px);
            transition: all 0.3s ease-in-out;
            box-shadow: 2px 2px 4px 0px rgba(0, 0, 0, 0.2);
        }
        
        .contact-btn:hover {
            transform: translate(13px, 12px);
            color: #FFC107;
        }
        
        .contact-btn:hover:before {
            background: #1B2632;
            box-shadow: 4px 4px 8px 0px rgba(0, 0, 0, 0.2);
        }
        
        .contact-btn:hover:after {
            transform: translate(-15px, -10px);
            background: #FFC107;
        }
        
        /* Secciones */
        section {
            padding: 80px 0;
        }
        
        .section-title {
            text-align: center;
            font-size: 2rem;
            margin-bottom: 50px;
            color: var(--primary);
            text-transform: uppercase;
            font-weight: 700;
        }
        
        .section-subtitle {
            text-align: center;
            font-size: 1.2rem;
            margin-bottom: 50px;
            color: var(--gray);
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }
        
        /* Servicios */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 40px;
            margin-top: 40px;
        }
        
        .service-card {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-hover);
        }
        
        .service-card-content {
            padding: 30px;
        }
        
        .service-card h3 {
            color: var(--primary);
            margin-bottom: 20px;
            font-size: 1.3rem;
            font-weight: 600;
        }
        
        .service-subtitle {
            color: var(--secondary);
            font-weight: 700;
            margin: 15px 0;
            font-size: 1.1rem;
        }
        
        .service-features {
            color: var(--gray);
            margin-top: 20px;
        }
        
        .check {
            color: var(--accent);
            margin-right: 8px;
            font-weight: bold;
        }
        
        /* Por qué elegirnos */
        .why-choose {
            background: linear-gradient(rgba(27, 38, 50, 0.95), rgba(27, 38, 50, 0.95)), url('images/elegir-zk911-soporte-de-control-de-asistencia.jpg');
            background-size: cover;
            background-position: center;
            color: var(--white);
            text-align: center;
            padding: 100px 0;
        }
        
        .why-content {
            background: rgba(27, 38, 50, 0.9);
            padding: 50px;
            border-radius: var(--radius);
            max-width: 900px;
            margin: 0 auto;
        }
        
        .why-choose .section-title {
            color: var(--white);
        }
        
        .why-features {
            max-width: 800px;
            margin: 0 auto 40px;
            text-align: left;
            font-size: 1.1rem;
        }
        
        .why-features p {
            margin-bottom: 20px;
            padding-left: 20px;
            position: relative;
        }
        
        .why-features p:before {
            content: "➤";
            position: absolute;
            left: 0;
            color: var(--secondary);
        }
        
        /* Marcas */
        .brands-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }
        
        .brand-card {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        
        .brand-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-hover);
        }
        
        .brand-img-container {
            width: 100%;
            height: 300px;
            overflow: hidden;
        }
        
        .brand-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .brand-content {
            padding: 30px;
        }
        
        .brand-rating {
            color: var(--secondary);
            font-size: 1.3rem;
            margin-bottom: 15px;
        }
        
        .brand-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--primary);
        }
        
        .brand-features p {
            margin-bottom: 15px;
            color: var(--gray);
        }
        
        .brand-features strong {
            color: var(--primary);
        }
        
        .brand-features ul {
            list-style: none;
            margin-top: 20px;
        }
        
        .brand-features li {
            margin-bottom: 12px;
            padding-left: 25px;
            position: relative;
            color: var(--gray);
        }
        
        .brand-features li:before {
            content: "✔";
            color: var(--accent);
            font-weight: bold;
            position: absolute;
            left: 0;
        }
        
        .btn-link {
            color: var(--secondary);
            text-decoration: none;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            margin-top: 25px;
            transition: var(--transition);
            font-size: 1rem;
        }
        
        .btn-link:hover {
            color: var(--primary);
            gap: 10px;
        }
        
        /* Sección de eficiencia */
        .efficiency-section {
            background: var(--light);
            padding: 100px 0;
        }
        
        .efficiency-content {
            background: var(--white);
            padding: 50px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin-bottom: 50px;
        }
        
        .efficiency-content h2 {
            text-align: center;
            font-size: 1.8rem;
            margin-bottom: 25px;
            color: var(--primary);
        }
        
        .efficiency-content p {
            text-align: center;
            color: var(--gray);
            max-width: 800px;
            margin: 0 auto;
            font-size: 1.1rem;
        }
        
        .efficiency-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }
        
        .efficiency-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        
        .efficiency-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-hover);
        }
        
        .efficiency-icon {
            width: 130px;
            height: 130px;
            margin: 0 auto 25px;
            display: block;
        }
        
        .efficiency-card h3 {
            text-align: center;
            font-size: 1.3rem;
            margin-bottom: 20px;
            color: var(--primary);
        }
        
        .efficiency-card ul {
            list-style: none;
        }
        
        .efficiency-card li {
            margin-bottom: 15px;
            padding-left: 25px;
            position: relative;
            color: var(--gray);
        }
        
        .efficiency-card li:before {
            content: "►";
            color: var(--secondary);
            position: absolute;
            left: 0;
        }
        
        /* Instalación de software */
        .software-section {
            padding: 100px 0;
        }
        
        .software-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
            background: var(--white);
            padding: 50px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        
        .software-text h2 {
            font-size: 1.8rem;
            margin-bottom: 25px;
            color: var(--primary);
        }
        
        .software-text h3 {
            color: var(--secondary);
            margin-bottom: 20px;
            font-size: 1.4rem;
        }
        
        .software-text p {
            margin-bottom: 20px;
            color: var(--gray);
            font-size: 1.1rem;
        }
        
        .software-text ul {
            list-style: none;
            margin-top: 25px;
        }
        
        .software-text li {
            margin-bottom: 15px;
            padding-left: 30px;
            position: relative;
            color: var(--gray);
        }
        
        .software-text li:before {
            content: "✔";
            color: var(--accent);
            font-weight: bold;
            position: absolute;
            left: 0;
            font-size: 1.2rem;
        }
        
        .software-img-container {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
        }
        
        .software-img {
            width: 100%;
            height: auto;
            display: block;
        }
        
        /* FAQ */
        .faq-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 25px;
            margin-bottom: 50px;
        }
        
        .faq-column {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        
        .accordion {
            border: 1px solid #ddd;
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }
        
        .accordion:hover {
            border-color: var(--secondary);
        }
        
        .accordion-header {

            width: 100%;
            padding: 20px;
            background: var(--white);
            border: none;
            text-align: left;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }
        
        .accordion-header:hover {
            background: var(--light);
        }
        
        .accordion-icon {
            font-size: 1.5rem;
            transition: var(--transition);
            min-width: 30px;
            text-align: center;
        }
        
        .accordion-content {
            padding: 0;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }
        
        .accordion-content.active {
            padding: 25px;
            max-height: 1000px;
        }
        
        .accordion-content p {
            margin-bottom: 15px;
            color: var(--gray);
            line-height: 1.8;
        }
        
        .faq-cta {
            text-align: center;
            margin-top: 40px;
        }
        
        /* Footer */
        .footer {
            background: var(--dark);
            color: var(--white);
            padding: 60px 0 30px;
        }
        
        .footer-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 40px;
        }
        
        .footer-info {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 30px;
        }
        
        .footer-link {
            color: var(--white);
            text-decoration: none;
            font-weight: 700;
            transition: var(--transition);
            font-size: 1.1rem;
        }
        
        .footer-link:hover {
            color: var(--secondary);
        }
        
        .social-links {
            display: flex;
            gap: 20px;
        }
        
        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            transition: var(--transition);
        }
        
        .social-links a:hover {
            background: var(--secondary);
            transform: translateY(-5px);
        }
        
        .social-icon {
            width: 20px;
            height: 20px;
            filter: brightness(0) invert(1);
        }
        
        .footer-copyright {
            text-align: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            line-height: 1.8;
            max-width: 600px;
            margin: 0 auto;
        }
        
        /* Responsive */
        @media (max-width: 992px) {
            .services-grid,
            .brands-grid,
            .efficiency-grid,
            .faq-container {
                grid-template-columns: 1fr;
            }
            
            .software-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }
        
        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }
            
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--white);
                flex-direction: column;
                align-items: stretch;
                padding: 20px;
                box-shadow: var(--shadow);
                transform: translateY(-100%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                z-index: 999;
            }
            
            .main-nav.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            
            .nav-dropdown-content {
                position: static;
                box-shadow: none;
                opacity: 1;
                visibility: visible;
                transform: none;
                display: none;
                background: var(--light);
                margin-top: 10px;
            }
            
            .nav-dropdown-content.show {
                display: block;
            }
            
            .hero {
                padding: 60px 0;
                min-height: auto;
            }
            
            .hero-content {
                padding: 30px;
            }
            
            .hero-title {
                font-size: 1.8rem;
            }
            
            .hero-subtitle {
                font-size: 1rem;
            }
            
            .section-title {
                font-size: 1.6rem;
            }
            
            .section-subtitle {
                font-size: 1.1rem;
            }
            
            .btn {
                padding: 12px 25px;
                font-size: 0.9rem;
            }
            
            .why-choose {
                padding: 60px 0;
            }
            
            .why-content {
                padding: 30px;
            }
            
            .software-content,
            .efficiency-content {
                padding: 30px;
            }
            
            .efficiency-card {
                padding: 30px;
            }
            
            .service-card-content,
            .brand-content {
                padding: 25px;
            }
        }
        
        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }
            
            .hero, .why-choose {
                padding: 40px 0;
            }
            
            .section-title {
                font-size: 1.4rem;
            }
            
            .special-btn {
                padding: 0 2rem;
                font-size: 1rem;
            }
            
            .accordion-header {
                padding: 15px;
                font-size: 1rem;
            }
            
            .accordion-content.active {
                padding: 20px;
            }
            
            .footer {
                padding: 40px 0 20px;
            }
            
            .social-links {
                gap: 15px;
            }
            
            .social-links a {
                width: 35px;
                height: 35px;
            }
            
            .social-icon {
                width: 18px;
                height: 18px;
            }
        }
        
        /* Animaciones */
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .fade-in {
            animation: fadeIn 0.8s ease forwards;
        }