:root {
        --primary: #4e73df;
        --primary-dark: #2e59d9;
        --primary-light: #7a93e9;
        --secondary: #858796;
        --success: #1cc88a;
        --info: #36b9cc;
        --warning: #f6c23e;
        --danger: #e74a3b;
        --light: #f8f9fc;
        --dark: #5a5c69;
        --dark-blue: #2a3f5f;
        --white: #ffffff;
        --gray-100: #f8f9fa;
        --gray-200: #e9ecef;
        --gray-300: #dee2e6;
        --gray-400: #ced4da;
        --gray-500: #adb5bd;
        --gray-600: #6c757d;
        --gray-700: #495057;
        --gray-800: #343a40;
        --gray-900: #212529;
        
        --font-main: 'Open Sans', sans-serif;
        --font-heading: 'Montserrat', sans-serif;
        
        --border-radius: 12px;
        --border-radius-lg: 16px;
        --border-radius-sm: 8px;
        
        --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        --box-shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
        --box-shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.15);
        
        --transition: all 0.3s ease;
        --transition-fast: all 0.2s ease;
        --transition-slow: all 0.5s ease;
    }

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font-main);
        line-height: 1.7;
        color: var(--gray-700);
        background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
        background-attachment: fixed;
        background-image: url(../img/fondo-hero3.jpg);
        overflow-x: hidden;
        width:100%;
    }

    h1, h2, h3, h4, h5, h6 {
        font-family: var(--font-heading);
        font-weight: 700;
        line-height: 1.3;
        margin-bottom: 1rem;
        color: var(--dark-blue);
    }

    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    h3 {
        font-size: 1.5rem;
    }

    p {
        margin-bottom: 1.5rem;
    }

    a {
        text-decoration: none;
        color: var(--primary);
        transition: var(--transition-fast);
    }

    a:hover {
        color: var(--primary-dark);
    }

    .container {
        width: 95%;
        margin: 0 auto;
    }

    .container-seo {
        width: 100%;
        margin: 0 auto;
    }

    .container-features {
        width: 100%;
        margin: 0 auto;
    }

    .section-title {
        text-align: center;
        margin-bottom: 3rem;
        position: relative;
    }

    .section-title:after {
        content: '';
        display: block;
        width: 80px;
        height: 4px;
        background: linear-gradient(to right, var(--primary), var(--info));
        margin: 15px auto 0;
        border-radius: 2px;
    }

    

    /* Hero Section */
    .hero {
        padding: 12px 0 20px;
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        color: white;
        text-align: center;
        position: relative;
        overflow: hidden;
        background: linear-gradient(120deg, #4e73df, #29426e);
    }

    .hero:before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.05" d="M0,224L48,213.3C96,203,192,181,288,170.7C384,160,480,160,576,176C672,192,768,224,864,218.7C960,213,1056,171,1152,149.3C1248,128,1344,128,1392,128L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') bottom/cover no-repeat;
    }

    .hero-content {
        position: relative;
        z-index: 1;
        max-width: 800px;
        margin: 0 auto;
    }

    .hero h1 {
        font-size: 3rem;
        margin-bottom: 1.5rem;
        color: #fefeff;
        text-shadow: 0 2px 10px rgb(0 0 0);
        text-shadow: 3px 3px #060606;
    }

    .hero p {
        font-size: 1.3rem;
        margin-bottom: 2.5rem;
        opacity: 0.9;
    }

    .hero-image {
        margin: 40px 0;
    }

    .hero-image img {
        border-radius: 5%;
        border: 5px solid rgb(255 255 255 / 41%);
        box-shadow: 0 10px 30px rgb(0 0 0 / 20%);
    }

    .counter {
        background: rgba(255, 255, 255, 0.15);
        backdrop-filter: blur(10px);
        border-radius: var(--border-radius-lg);
        padding: 10px;
        margin: 40px auto;
        max-width: 500px;
        text-align: center;
        border: 1px solid rgba(255, 255, 255, 0.2);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }

    .counter .num {
        font-size: 3.5rem;
        font-weight: 800;
        color: white;
        margin-bottom: 10px;
        text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    }

    .counter .label {
        font-size: 1.3rem;
        font-weight: 600;
        color: white;
        opacity: 0.9;
        text-transform: uppercase;
        letter-spacing: 1px;
    }

    .counter .description {
        margin-top: 15px;
        font-size: 1.1rem;
        opacity: 0.85;
    }

    /* Hero Info Section */
    .hero-info {
        padding: 60px 0;
        background: var(--white);
    }

    .info-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 40px;
    }

    .info-card {
        background: var(--white);
        border-radius: var(--border-radius);
        padding: 40px 30px;
        text-align: center;
        box-shadow: var(--box-shadow);
        transition: var(--transition);
        border-top: 5px solid var(--primary);
    }

    .info-card:hover {
        transform: translateY(-10px);
        box-shadow: var(--box-shadow-hover);
    }

    .info-icon {
        width: 80px;
        height: 80px;
        margin: 0 auto 25px;
        background: linear-gradient(135deg, var(--primary) 0%, var(--info) 100%);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 2.5rem;
        color: white;
    }

    .info-card h3 {
        margin-bottom: 15px;
        color: var(--dark-blue);
    }

    /* Features Section */
    .features {
        background: var(--white);
        border-radius: var(--border-radius-lg);
        padding: 60px 40px;
        margin: -40px auto 0;
        position: relative;
        z-index: 2;
        box-shadow: var(--box-shadow-lg);
    }

    .features-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 30px;
    }

    .feature {
        text-align: center;
        padding: 30px 20px;
        border-radius: var(--border-radius);
        transition: var(--transition);
    }

    .feature:hover {
        transform: translateY(-10px);
        box-shadow: var(--box-shadow-hover);
    }

    .feature-icon {
        width: 80px;
        height: 80px;
        margin: 0 auto 20px;
        background: linear-gradient(135deg, var(--primary) 0%, var(--info) 100%);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 2rem;
        color: white;
    }

    .feature h3 {
        margin-bottom: 15px;
        color: var(--dark-blue);
    }

    /* Tabs Section */
    .tabs-section {
        background: var(--white);
        border-radius: var(--border-radius-lg);
        padding: 60px 40px;
        margin: 50px auto;
        box-shadow: var(--box-shadow);
    }

    .tabs {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-bottom: 40px;
        justify-content: center;
    }

    .tab-button {
        padding: 14px 25px;
        background: var(--gray-100);
        color: var(--gray-700);
        border: none;
        border-radius: var(--border-radius);
        font-size: 1rem;
        font-weight: 600;
        cursor: pointer;
        transition: var(--transition);
        display: flex;
        align-items: center;
        gap: 10px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    }

    .tab-button:hover {
        background: var(--primary-light);
        color: white;
        transform: translateY(-3px);
    }

    .tab-button.active {
        background: var(--primary);
        color: white;
        box-shadow: 0 5px 15px rgba(78, 115, 223, 0.3);
    }

    .tab-pane {
        display: none;
        animation: fadeIn 0.5s ease;
    }

    .tab-pane.active {
        display: block;
    }

    .tools-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 25px;
    }

    .tool-card {
        background: var(--white);
        border-radius: var(--border-radius);
        overflow: hidden;
        box-shadow: var(--box-shadow);
        transition: var(--transition);
        display: flex;
        flex-direction: column;
        height: 100%;
        border: 1px solid var(--gray-200);
    }

    .tool-card:hover {
        transform: translateY(-10px);
        box-shadow: var(--box-shadow-hover);
    }

    .tool-image {
        height: 180px;
        overflow: hidden;
        position: relative;
        background: linear-gradient(135deg, #f0f4ff 0%, #e6ebfa 100%);
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .tool-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: var(--transition);
    }

    .tool-card:hover .tool-image img {
        transform: scale(1.05);
    }

    .tool-content {
        padding: 25px;
        flex-grow: 1;
        display: flex;
        flex-direction: column;
    }

    .tool-name {
        font-size: 1.2rem;
        margin-bottom: 10px;
        color: var(--dark-blue);
        font-weight: 600;
    }

    .tool-description {
        color: var(--gray-600);
        font-size: 0.95rem;
        margin-bottom: 20px;
        flex-grow: 1;
    }

    .tool-link {
        display: inline-block;
        padding: 12px 20px;
        background: var(--primary);
        color: white;
        text-align: center;
        text-decoration: none;
        border-radius: var(--border-radius-sm);
        font-weight: 600;
        transition: var(--transition);
        margin-top: auto;
    }

    .tool-link:hover {
        background: var(--primary-dark);
        color: white;
    }

    /* All Tools Section */
    .all-tools {
        background: var(--white);
        border-radius: var(--border-radius-lg);
        padding: 60px 40px;
        margin: 50px auto;
        box-shadow: var(--box-shadow);
    }

    .category-title {
        font-size: 1.5rem;
        margin: 40px 0 20px;
        padding-bottom: 10px;
        border-bottom: 2px solid var(--gray-200);
        color: var(--dark-blue);
    }

    .category-title:first-child {
        margin-top: 0;
    }

    .tools-list {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 15px;
        margin-bottom: 30px;
    }

    .tool-item {
        padding: 15px;
        background: #e0e4e9;
        border-radius: var(--border-radius-sm);
        transition: var(--transition);
        border-left: 4px solid var(--primary);
    }

    .tool-item:hover {
        background: var(--primary);
        color: white;
        transform: translateX(5px);
    }

    .tool-item a {
        text-decoration: none;
        color: inherit;
        display: flex;
        align-items: center;
        font-weight: 500;
    }

    .tool-item i {
        margin-right: 10px;
        font-size: 1.2rem;
        width: 24px;
        text-align: center;
    }

    .tool-item:hover a, .tool-item:hover i {
        color: white;
    }

    /* SEO Article */
    .seo-article {
        background: var(--white);
        border-radius: var(--border-radius-lg);
        overflow: hidden;
        margin: 50px auto;
        box-shadow: var(--box-shadow-lg);
    }

    .article-header {
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        color: white;
        padding: 80px 40px 60px;
        text-align: center;
        position: relative;
    }

    .article-header:before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.05" d="M0,224L48,213.3C96,203,192,181,288,170.7C384,160,480,160,576,176C672,192,768,224,864,218.7C960,213,1056,171,1152,149.3C1248,128,1344,128,1392,128L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') bottom/cover no-repeat;
    }

    .article-header-content {
        position: relative;
        z-index: 2;
        max-width: 800px;
        margin: 0 auto;
    }

    .article-title-2 {
        font-size: 2.5rem;
        margin-bottom: 20px;
        color: #ffff;
    }

    .article-content {
        padding: 60px;
    }

    .intro-text {
        font-size: 1.2rem;
        color: var(--gray-700);
        margin-bottom: 30px;
        line-height: 1.8;
        padding: 20px;
        background: var(--gray-100);
        border-left: 4px solid var(--primary);
        border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    }

    .benefits-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 25px;
        margin: 40px 0;
    }

    .benefit-card {
        background: var(--white);
        border-radius: var(--border-radius);
        padding: 30px;
        box-shadow: var(--box-shadow);
        transition: var(--transition);
        border: 1px solid var(--gray-200);
        text-align: center;
    }

    .benefit-card:hover {
        transform: translateY(-10px);
        box-shadow: var(--box-shadow-hover);
    }

    .benefit-icon {
        font-size: 3rem;
        color: var(--primary);
        margin-bottom: 20px;
    }

    .benefit-title {
        font-size: 1.4rem;
        margin-bottom: 15px;
        color: var(--dark-blue);
    }

    .statistics-container {
        display: flex;
        justify-content: space-around;
        flex-wrap: wrap;
        gap: 20px;
        margin: 50px 0;
    }

    .stat-card {
        background: var(--white);
        border-radius: var(--border-radius);
        padding: 30px 20px;
        text-align: center;
        box-shadow: var(--box-shadow);
        flex: 1;
        min-width: 200px;
        border-top: 5px solid var(--primary);
    }

    .stat-number {
        font-size: 3rem;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 10px;
        line-height: 1;
    }

    .stat-label {
        font-size: 1.1rem;
        color: var(--gray-600);
    }

    .comparison-table {
        width: 100%;
        border-collapse: collapse;
        margin: 40px 0;
        box-shadow: var(--box-shadow);
        border-radius: var(--border-radius);
        overflow: hidden;
    }

    .comparison-table th {
        background: var(--primary);
        color: white;
        padding: 15px;
        text-align: left;
        font-family: var(--font-heading);
    }

    .comparison-table td {
        padding: 15px;
        border-bottom: 1px solid var(--gray-200);
    }

    .comparison-table tr:nth-child(even) {
        background: var(--gray-100);
    }

    .comparison-table tr:last-child td {
        border-bottom: none;
    }

    .feature-badge {
        background: var(--success);
        color: white;
        padding: 5px 10px;
        border-radius: 20px;
        font-size: 0.9rem;
        display: inline-block;
    }

    .highlight {
        background: linear-gradient(120deg, rgba(78, 115, 223, 0.1), rgba(78, 115, 223, 0.05));
        padding: 30px;
        border-radius: var(--border-radius);
        margin: 40px 0;
        border: 1px solid rgba(78, 115, 223, 0.15);
    }

    /* Footer */
    footer {
        background: var(--dark-blue);
        color: white;
        padding: 30px 0 30px;
    }

    .footer-content {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 40px;
        margin-bottom: 40px;
        margin-top: 40px;
    }

    .footer-column h3 {
        color: white;
        margin-bottom: 20px;
        font-size: 1.3rem;
    }

    .footer-links {
        list-style: none;
    }

    .footer-links li {
        margin-bottom: 10px;
    }

    .footer-links a {
        color: rgba(255, 255, 255, 0.7);
        transition: var(--transition-fast);
    }

    .footer-links a:hover {
        color: white;
        padding-left: 5px;
    }

    .footer-bottom {
        text-align: center;
        padding-top: 30px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        color: rgba(255, 255, 255, 0.7);
        font-size: 0.9rem;
    }

    /* Animations */
    @keyframes fadeIn {
        from { opacity: 0; transform: translateY(20px); }
        to { opacity: 1; transform: translateY(0); }
    }

    .num {
        display: inline-block;
        transition: transform 0.3s ease;
    }

    .num.bounce {
        transform: scale(1.3);
    }

    /* Responsive Styles */
    @media (max-width: 992px) {
        .hero h1 {
            font-size: 2.5rem;
        }
        
        .article-title {
            font-size: 2rem;
        }
        
        .tools-grid {
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        }
    }

    @media (max-width: 768px) {

        .container{
            width: 100%;
        }

        .footer-content{
            margin-left: 10px;
            text-align: center;
        }
        
        
        body {
            overflow-x: hidden;
            position: relative;
        }
        
        .tabs {
            flex-direction: row;
            overflow-x: auto;
            overflow-y: hidden;
            justify-content: flex-start;
            padding-bottom: 10px;
            -webkit-overflow-scrolling: touch;
        }
        
        .tab-button {
            flex-shrink: 0;
            white-space: nowrap;
            padding: 12px 20px;
            font-size: 0.9rem;
        }
        
        .tab-button i {
            font-size: 0.9rem;
        }
        
        .comparison-table {
            font-size: 0.85rem;
        }
        
        .comparison-table th,
        .comparison-table td {
            padding: 10px 8px;
        }
        
        .feature-badge {
            font-size: 0.8rem;
            padding: 3px 8px;
        }
        
        .hero {
            padding: 100px 0 60px;
        }
        
        .hero h1 {
            font-size: 2rem;
        }
        
        .hero p {
            font-size: 1.1rem;
        }
        
        .features {
            padding: 40px 20px;
        }
        
        .tabs-section, .all-tools, .seo-article {
            padding: 40px 20px;
        }
        
        .article-content {
            padding: 40px 20px;
        }
        
        .tools-grid {
            grid-template-columns: 1fr;
        }
        
        .tools-list {
            grid-template-columns: 1fr;
        }
        
        .statistics-container {
            flex-direction: column;
        }
    }

    @media (max-width: 576px) {
        .hero h1 {
            font-size: 1.8rem;
        }
        
        .hero-image img {
            width: auto;
            height: auto;
        }
        
        .counter .num {
            font-size: 2.5rem;
        }
        
        .section-title {
            font-size: 1.8rem;
        }
        
        .article-title {
            font-size: 1.7rem;
        }
        
        .benefits-grid {
            grid-template-columns: 1fr;
        }
        
        .tool-image {
            height: 150px;
        }
        
        .tool-name {
            font-size: 1.1rem;
        }
        
        .logo-footer {
            padding-bottom: 20px;
        }
        
        .logo-footer img {
            height: 60px;
        }
    }

    @media (max-width: 480px) {
        .hero h1 {
            font-size: 1.6rem;
            line-height: 1.2;
        }
        
        .hero p {
            font-size: 1rem;
        }
        
        .counter .num {
            font-size: 2.2rem;
        }
        
        .counter .label {
            font-size: 1.1rem;
        }
        
        
        
        .benefits-grid {
            grid-template-columns: 1fr;
            gap: 20px;
        }
        
        .benefit-card {
            padding: 20px;
        }
    }


    .logo-footer {
    text-align: center;
    margin-bottom: 5px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 30px;
    }

    .logo-footer img {
    height: 80px;
    width: auto;
    margin: 0 auto;
    border-radius: 50%;
    border: 2px solid #4e73df;
    padding: 2px;
}