:root {
            --primary-color: #ff6b35;
            --secondary-color: #f7931e;
            --accent-color: #2ecc71;
            --text-dark: #2c3e50;
            --text-light: #7f8c8d;
            --bg-light: #f8f9fa;
        }
        body {
            font-family: 'Segoe UI', system-ui, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        }
        .main-container {
            background: white;
            border-radius: 20px;
            box-shadow: 0 15px 50px rgba(0,0,0,0.1);
            margin: 2rem auto;
            overflow: hidden;
            max-width: 1400px;
        }
        .logo-header {
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 2rem 0;
            text-align: center;
            border-bottom: 5px solid var(--accent-color);
        }
        .logo-text {
            font-size: 3.5rem;
            font-weight: 900;
            text-shadow: 3px 3px 0 rgba(0,0,0,0.2);
            letter-spacing: 2px;
            margin: 0;
        }
        .logo-subtitle {
            font-size: 1.2rem;
            opacity: 0.9;
            margin-top: 0.5rem;
        }
        .nav-custom {
            background: var(--text-dark);
            padding: 0;
        }
        .nav-custom .nav-link {
            color: white !important;
            font-weight: 600;
            padding: 1rem 1.5rem;
            transition: all 0.3s ease;
            border-right: 1px solid rgba(255,255,255,0.1);
        }
        .nav-custom .nav-link:hover {
            background: var(--primary-color);
            transform: translateY(-2px);
        }
        .nav-custom .nav-link i {
            margin-right: 8px;
        }
        .content-section {
            padding: 3rem 2rem;
        }
        .article-header {
            border-bottom: 3px solid var(--primary-color);
            padding-bottom: 1rem;
            margin-bottom: 2rem;
        }
        h1 {
            color: var(--primary-color);
            font-size: 2.8rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        h2 {
            color: var(--secondary-color);
            font-size: 2.2rem;
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed var(--accent-color);
        }
        h3 {
            color: var(--text-dark);
            font-size: 1.8rem;
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight-box {
            background: linear-gradient(135deg, #ffeaa7, #fab1a0);
            border-left: 5px solid var(--primary-color);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .feature-img {
            width: 100%;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
            margin: 2rem 0;
            transition: transform 0.3s ease;
        }
        .feature-img:hover {
            transform: scale(1.02);
        }
        .key-point {
            background: var(--bg-light);
            padding: 1.5rem;
            border-radius: 10px;
            margin: 1.5rem 0;
            border-left: 4px solid var(--accent-color);
        }
        .key-point h4 {
            color: var(--primary-color);
            margin-top: 0;
        }
        .table-custom {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            margin: 2rem 0;
        }
        .table-custom th {
            background: var(--primary-color);
            color: white;
            font-weight: 600;
        }
        .footer {
            background: var(--text-dark);
            color: white;
            padding: 3rem 0;
            margin-top: 3rem;
            text-align: center;
        }
        .footer-links a {
            color: #ddd;
            margin: 0 1rem;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: var(--accent-color);
        }
        .copyright {
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 768px) {
            .logo-text {
                font-size: 2.5rem;
            }
            .content-section {
                padding: 2rem 1rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .nav-custom .nav-link {
                padding: 0.8rem 1rem;
                font-size: 0.9rem;
            }
        }
        .badge-custom {
            background: var(--accent-color);
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 50px;
            font-weight: 600;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
            display: inline-block;
        }
        .quote-box {
            background: linear-gradient(135deg, #74b9ff, #0984e3);
            color: white;
            padding: 2rem;
            border-radius: 15px;
            margin: 2rem 0;
            position: relative;
        }
        .quote-box:before {
            content: """;
            font-size: 5rem;
            position: absolute;
            top: -10px;
            left: 20px;
            opacity: 0.3;
        }
        .timeline {
            position: relative;
            margin: 3rem 0;
        }
        .timeline:before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--primary-color);
            transform: translateX(-50%);
        }
        .timeline-item {
            margin-bottom: 3rem;
            position: relative;
            width: 45%;
        }
        .timeline-item:nth-child(odd) {
            left: 0;
        }
        .timeline-item:nth-child(even) {
            left: 55%;
        }
        .timeline-content {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            position: relative;
        }
        .timeline-content:after {
            content: '';
            position: absolute;
            top: 20px;
            width: 20px;
            height: 20px;
            background: var(--primary-color);
            border-radius: 50%;
        }
        .timeline-item:nth-child(odd) .timeline-content:after {
            right: -60px;
        }
        .timeline-item:nth-child(even) .timeline-content:after {
            left: -60px;
        }
        @media (max-width: 768px) {
            .timeline:before {
                left: 20px;
            }
            .timeline-item {
                width: 100%;
                left: 0 !important;
                padding-left: 50px;
            }
            .timeline-content:after {
                left: -30px !important;
            }
        }