:root {
        --primary-blue: #34454D;
        --secondary-blue: #4a6572;
        --secondary-yellow: #ffcc00;
        --light-gray: #f9f9f9;
        --medium-gray: #777;
        --dark-gray: #333;
        --white: #ffffff;
        --transition: all 0.3s ease;
    }

    /* Hero Section Modernizada */
    .modern-hero {
        position: relative;
        height: 85vh;
        min-height: 600px;
        display: flex;
        align-items: center;
        overflow: hidden;
        background: var(--primary-blue);
    }

    .hero-background {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: 1;
    }

    .hero-background img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        opacity: 0.4;
    }

    .hero-content {
        position: relative;
        z-index: 2;
        color: var(--white);
        text-align: center;
        max-width: 900px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .hero-content h1 {
        font-size: 3.5rem;
        margin-bottom: 20px;
        font-weight: 700;
        text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    }

    .hero-content p {
        font-size: 1.25rem;
        margin-bottom: 30px;
        max-width: 700px;
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        display: inline-flex;
        gap: 15px;
        margin-top: 20px;
    }

    .btn-primary,
    .btn-secondary {
        padding: 14px 30px;
        border-radius: 50px;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 1px;
        font-size: 0.9rem;
        transition: var(--transition);
        display: inline-block;
    }

    .btn-primary {
        background: var(--secondary-yellow);
        color: var(--dark-gray);
        border: 2px solid var(--secondary-yellow);
    }

    .btn-primary:hover {
        background: transparent;
        color: var(--secondary-yellow);
    }

    .btn-secondary {
        background: transparent;
        color: var(--white);
        border: 2px solid var(--white);
    }

    .btn-secondary:hover {
        background: var(--white);
        color: var(--primary-blue);
    }

    /* Conteúdo Principal Modernizado */
    .validation-content {
        padding: 100px 0;
    }

    .content-section {
        margin-bottom: 100px;
    }

    .section-header {
        text-align: center;
        margin-bottom: 60px;
    }

    .section-header h2 {
        color: var(--primary-blue);
        font-size: 2.5rem;
        margin-bottom: 20px;
        position: relative;
        display: inline-block;
    }

    .section-header h2:after {
        content: '';
        position: absolute;
        bottom: -15px;
        left: 50%;
        transform: translateX(-50%);
        width: 80px;
        height: 4px;
        background-color: var(--secondary-yellow);
    }

    .section-header p {
        max-width: 700px;
        margin: 30px auto 0;
        color: var(--medium-gray);
        font-size: 1.1rem;
        line-height: 1.7;
    }

    /* Layout de Introdução Moderno */
    .intro-modern {
        display: flex;
        align-items: center;
        gap: 60px;
        margin-bottom: 80px;
    }

    .intro-visual {
        flex: 1;
        position: relative;
    }

    .intro-image {
        border-radius: 10px;
        overflow: hidden;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        position: relative;
    }

    .intro-image:before {
        content: '';
        position: absolute;
        top: -10px;
        right: -10px;
        bottom: -10px;
        left: -10px;
        border: 2px solid var(--secondary-yellow);
        border-radius: 15px;
        z-index: -1;
        opacity: 0.5;
    }

    .intro-image img {
        width: 100%;
        height: auto;
        display: block;
        transition: transform 0.7s ease;
    }

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

    .intro-text {
        flex: 1;
    }

    .intro-text h2 {
        color: var(--primary-blue);
        font-size: 2.2rem;
        margin-bottom: 25px;
    }

    .intro-text p {
        margin-bottom: 20px;
        line-height: 1.8;
        color: var(--dark-gray);
        text-align: justify;
    }

    /* Grid de Tipos de Sistemas */
    .systems-grid-modern {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: 40px;
        margin: 60px 0;
    }

    .system-card-modern {
        background: var(--white);
        border-radius: 12px;
        overflow: hidden;
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        transition: var(--transition);
        height: 100%;
        display: flex;
        flex-direction: column;
    }

    .system-card-modern:hover {
        transform: translateY(-10px);
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    }

    .card-image {
        height: 240px;
        overflow: hidden;
    }

    .card-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }

    .system-card-modern:hover .card-image img {
        transform: scale(1.1);
    }

    .card-content {
        padding: 30px;
        flex-grow: 1;
        display: flex;
        flex-direction: column;
    }

    .card-content h3 {
        color: var(--primary-blue);
        font-size: 1.5rem;
        margin-bottom: 15px;
        position: relative;
        padding-bottom: 15px;
    }

    .card-content h3:after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 40px;
        height: 3px;
        background-color: var(--secondary-yellow);
    }

    .system-acronym {
        color: var(--secondary-blue);
        font-weight: 600;
        font-size: 0.9rem;
        margin-bottom: 10px;
    }

    .card-content p {
        color: var(--dark-gray);
        line-height: 1.7;
        margin-bottom: 20px;
        flex-grow: 1;
    }

    /* Checklist Moderno */
    .checklist-modern {
        margin: 40px 0;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 20px;
    }

    .checklist-modern li {
        margin-bottom: 15px;
        position: relative;
        padding-left: 35px;
        line-height: 1.6;
    }

    .checklist-modern li:before {
        content: '✓';
        position: absolute;
        left: 0;
        top: 0;
        color: var(--secondary-yellow);
        font-weight: bold;
        font-size: 1.2rem;
        background: rgba(255, 204, 0, 0.1);
        width: 26px;
        height: 26px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* Grid de Fases Moderno */
    .phase-grid-modern {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 30px;
        margin: 50px 0;
    }

    .phase-card-modern {
        background: var(--white);
        padding: 35px 30px;
        border-radius: 10px;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.07);
        text-align: center;
        transition: var(--transition);
        border-top: 5px solid var(--secondary-blue);
    }

    .phase-card-modern:hover {
        transform: translateY(-5px);
    }

    .phase-card-modern h3 {
        color: var(--primary-blue);
        font-size: 1.3rem;
        margin-bottom: 15px;
    }

    .phase-number {
        font-size: 2.5rem;
        color: var(--secondary-blue);
        margin-bottom: 20px;
        font-weight: bold;
    }

    /* Benefícios Moderno */
    .benefits-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 30px;
        margin: 50px 0;
    }

    .benefit-card {
        background: var(--white);
        padding: 35px 30px;
        border-radius: 10px;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.07);
        text-align: center;
        transition: var(--transition);
        border-top: 5px solid var(--secondary-blue);
    }

    .benefit-card:hover {
        transform: translateY(-5px);
    }

    .benefit-card h3 {
        color: var(--primary-blue);
        font-size: 1.3rem;
        margin-bottom: 15px;
    }

    .benefit-icon {
        font-size: 2.5rem;
        color: var(--secondary-blue);
        margin-bottom: 20px;
    }

    /* CTA Moderno */
    .cta-modern {
        background: linear-gradient(to right, var(--primary-blue) 0%, var(--secondary-blue) 100%);
        color: var(--white);
        padding: 100px 0;
        text-align: center;
        border-radius: 15px;
        margin: 80px 0;
        position: relative;
        overflow: hidden;
    }

    .cta-modern:before {
        content: '';
        position: absolute;
        top: -50%;
        right: -50%;
        width: 100%;
        height: 200%;
        background: rgba(255, 255, 255, 0.05);
        transform: rotate(30deg);
    }

    .cta-modern h2 {
        font-size: 2.5rem;
        margin-bottom: 20px;
        position: relative;
    }

    .cta-modern p {
        font-size: 1.2rem;
        max-width: 700px;
        margin: 0 auto 40px;
        position: relative;
    }

    .cta-modern .btn-primary {
        position: relative;
        z-index: 2;
    }

    /* Responsividade */
    @media (max-width: 1200px) {
        .hero-content h1 {
            font-size: 3rem;
        }
    }

    @media (max-width: 992px) {
        .intro-modern {
            flex-direction: column;
            gap: 40px;
        }

        .modern-hero {
            height: auto;
            padding: 120px 0 80px;
        }

        .hero-content h1 {
            font-size: 2.5rem;
        }

        .systems-grid-modern {
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
    }

    @media (max-width: 768px) {
        .hero-content h1 {
            font-size: 2.2rem;
        }

        .hero-cta {
            flex-direction: column;
            width: 100%;
            max-width: 300px;
            margin: 0 auto;
        }

        .btn-primary,
        .btn-secondary {
            width: 100%;
            text-align: center;
            margin-bottom: 15px;
        }

        .section-header h2 {
            font-size: 2rem;
        }

        .phase-grid-modern {
            grid-template-columns: 1fr;
        }

        .checklist-modern {
            grid-template-columns: 1fr;
        }

        .benefits-grid {
            grid-template-columns: 1fr;
        }

        .cta-modern {
            padding: 70px 0;
        }

        .cta-modern h2 {
            font-size: 2rem;
        }
    }

    @media (max-width: 576px) {
        .hero-content h1 {
            font-size: 1.8rem;
        }

        .hero-content p {
            font-size: 1rem;
        }

        .section-header h2 {
            font-size: 1.8rem;
        }

        .systems-grid-modern {
            grid-template-columns: 1fr;
        }

        .card-image {
            height: 200px;
        }
    }