:root {
            --cinza-aco: #6c757d;
            --marrom-madeira: #8B4513;
            --azul-petroleo: #1d3c45;
        }

        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.6;
        }

        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }

        section {
            padding: 80px 0;
        }

        h2 {
            font-size: 2.5rem;
            margin-bottom: 30px;
            text-align: center;
            color: var(--azul-petroleo);
            position: relative;
        }

        h2::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background-color: var(--marrom-madeira);
        }