:root {
            --cor-primaria: #cc0000;
            --cor-secundaria: #1a1a1a;
            --bg-site: #f4f7f6;
            --branco: #ffffff;
            --texto-suave: #555;
        }

        body {
            font-family: 'Segoe UI', Arial, sans-serif;
            background-color: var(--bg-site);
            margin: 0;
            padding: 20px;
        }

        .container {
            max-width: 900px;
            margin: 0 auto;
        }

        header {
            text-align: center;
            margin-bottom: 40px;
        }

        .linha {
            height: 4px;
            width: 50px;
            background: var(--cor-primaria);
            margin: 10px auto;
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .news-card {
            background: var(--branco);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
            cursor: pointer;
            transition: 0.3s;
        }

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

        .news-image { width: 100%; height: 180px; object-fit: cover; }

        .news-body { padding: 15px; }

        .news-tag {
            background: var(--cor-primaria);
            color: white;
            padding: 2px 8px;
            font-size: 10px;
            border-radius: 3px;
            text-transform: uppercase;
        }

        #news-detail {
            display: none;
            background: var(--branco);
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.1);
        }

        .detail-image {
            width: 100%;
            max-height: 450px;
            object-fit: cover;
            border-radius: 8px;
            margin-bottom: 20px;
        }

        .navigation-buttons {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid #eee;
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-block;
            padding: 12px 24px;
            text-decoration: none;
            border-radius: 6px;
            font-weight: bold;
            font-size: 14px;
            cursor: pointer;
            border: none;
            transition: 0.3s;
        }

        .btn-voltar-lista {
            background-color: #e0e0e0;
            color: #333;
        }

        .btn-site-principal {
            background-color: var(--cor-primaria);
            color: white;
        }

        .btn:hover { opacity: 0.8; }

        .hidden { display: none !important; }