* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
        }
        :root {
            --primary: #3498db;
            --secondary: #2c3e50;
            --light: #f8f9fa;
            --dark: #343a40;
            --accent: #e67e22;
            --success: #2ecc71;
            --warning: #f39c12;
            --danger: #e74c3c;
        }
        body {
            background-color: #f5f7fa;
            color: var(--dark);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--secondary);
            color: white;
            padding: 20px 0;
            box-shadow: 0 2px 15px rgba(0,0,0,0.1);
        }
        .logo {
            font-size: 2rem;
            font-weight: bold;
            color: var(--primary);
            text-decoration: none;
            letter-spacing: 0.5px;
        }
        .logo span {
            color: var(--accent);
        }
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            margin-left: 35px;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
            position: relative;
        }
        .nav-links a:after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: -5px;
            left: 0;
            background-color: var(--primary);
            transition: width 0.3s ease;
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a:hover:after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--primary);
        }
        .btn {
            display: inline-block;
            padding: 12px 25px;
            background-color: var(--primary);
            color: white;
            border: none;
            border-radius: 6px;
            cursor: pointer;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            margin-right: 15px;
            box-shadow: 0 4px 6px rgba(52, 152, 219, 0.2);
        }
        .btn:hover {
            background-color: #2980b9;
            transform: translateY(-2px);
            box-shadow: 0 6px 8px rgba(52, 152, 219, 0.3);
        }
        .btn-secondary {
            background-color: var(--accent);
            color: white;
            box-shadow: 0 4px 6px rgba(230, 126, 34, 0.2);
        }
        .btn-secondary:hover {
            background-color: #d35400;
            box-shadow: 0 6px 8px rgba(230, 126, 34, 0.3);
        }
        main {
            padding: 50px 0;
        }
        .content-box {
            background-color: white;
            border-radius: 12px;
            padding: 40px;
            box-shadow: 0 8px 24px rgba(0,0,0,0.05);
            margin-bottom: 40px;
            border-top: 5px solid var(--primary);
        }
        h1 {
            color: var(--secondary);
            font-size: 2.5rem;
            margin-bottom: 25px;
            border-bottom: 4px solid var(--primary);
            padding-bottom: 15px;
            font-weight: 700;
        }
        h2 {
            color: var(--secondary);
            font-size: 2rem;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #eee;
            position: relative;
        }
        h2:after {
            content: '';
            position: absolute;
            width: 80px;
            height: 2px;
            bottom: -2px;
            left: 0;
            background-color: var(--primary);
        }
        h3 {
            color: var(--primary);
            font-size: 1.5rem;
            margin: 30px 0 15px;
            font-weight: 600;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
            font-size: 1.05rem;
        }
        ul, ol {
            margin-left: 35px;
            margin-bottom: 25px;
        }
        li {
            margin-bottom: 10px;
            font-size: 1.02rem;
        }
        .highlight {
            background-color: #ebf5fb;
            border-left: 5px solid var(--primary);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
            box-shadow: 0 4px 12px rgba(52, 152, 219, 0.1);
        }
        .highlight strong {
            color: var(--secondary);
            font-size: 1.1rem;
        }
        .feature-box {
            display: flex;
            flex-wrap: wrap;
            gap: 25px;
            margin: 35px 0;
        }
        .feature-item {
            flex: 1;
            min-width: 280px;
            background-color: #f8f9fa;
            padding: 25px;
            border-radius: 10px;
            border-top: 5px solid var(--primary);
            box-shadow: 0 6px 16px rgba(0,0,0,0.06);
            transition: transform 0.3s ease;
        }
        .feature-item:hover {
            transform: translateY(-5px);
        }
        .feature-item h3 {
            margin-top: 0;
            color: var(--secondary);
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 30px 0;
            background-color: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
        }
        th {
            background-color: var(--secondary);
            color: white;
            padding: 15px;
            text-align: left;
            font-weight: 600;
        }
        td {
            padding: 15px;
            border-bottom: 1px solid #eee;
        }
        tr:hover {
            background-color: #f8f9fa;
        }
        .img-container {
            text-align: center;
            margin: 30px 0;
        }
        .img-container img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            box-shadow: 0 6px 18px rgba(0,0,0,0.1);
        }
        blockquote {
            border-left: 4px solid var(--accent);
            padding: 15px 20px;
            margin: 25px 0;
            background-color: #fdf2e9;
            border-radius: 0 6px 6px 0;
            font-style: italic;
        }
        footer {
            background-color: var(--secondary);
            color: white;
            padding: 50px 0 25px;
            margin-top: 60px;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            gap: 50px;
            margin-bottom: 40px;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h3 {
            color: var(--primary);
            margin-bottom: 25px;
            font-size: 1.3rem;
            padding-bottom: 10px;
            border-bottom: 2px solid rgba(52, 152, 219, 0.3);
        }
        .footer-links {
            list-style: none;
            margin-left: 0;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #ddd;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-block;
        }
        .footer-links a:hover {
            color: var(--primary);
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 25px;
            border-top: 1px solid rgba(255,255,255,0.1);
            margin-top: 25px;
            font-size: 0.95rem;
            color: #ccc;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 90px;
                left: 0;
                right: 0;
                background-color: var(--secondary);
                padding: 25px;
                box-shadow: 0 8px 15px rgba(0,0,0,0.1);
                z-index: 100;
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links li {
                margin: 15px 0;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .feature-box {
                flex-direction: column;
            }
            .content-box {
                padding: 25px;
            }
            .btn {
                display: block;
                width: 100%;
                margin-bottom: 15px;
                text-align: center;
            }
        }
        ::-webkit-scrollbar {
            width: 10px;
        }
        ::-webkit-scrollbar-track {
            background: #f1f1f1;
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary);
            border-radius: 5px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #2980b9;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .content-box > * {
            animation: fadeIn 0.5s ease forwards;
        }
        .content-box > *:nth-child(1) { animation-delay: 0.1s; }
        .content-box > *:nth-child(2) { animation-delay: 0.2s; }
        .content-box > *:nth-child(3) { animation-delay: 0.3s; }