* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.8;
            padding-bottom: 50px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: #1a237e;
            color: white;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 24px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: #ffca28;
            text-decoration: none;
        }
        .logo span {
            color: white;
        }
        .nav-links {
            display: flex;
            gap: 30px;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }
        .nav-links a:hover {
            color: #ffca28;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 24px;
            cursor: pointer;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s;
            text-align: center;
            margin: 10px 5px;
        }
        .btn-download {
            background-color: #2e7d32;
            color: white;
        }
        .btn-download:hover {
            background-color: #1b5e20;
            transform: translateY(-2px);
        }
        .btn-login {
            background-color: #ffca28;
            color: #1a237e;
        }
        .btn-login:hover {
            background-color: #ffb300;
            transform: translateY(-2px);
        }
        h1 {
            font-size: 36px;
            color: #1a237e;
            margin: 40px 0 30px;
            text-align: center;
            font-weight: 800;
        }
        h2 {
            font-size: 28px;
            color: #283593;
            margin: 50px 0 25px;
            padding-bottom: 10px;
            border-bottom: 2px solid #ffca28;
        }
        h3 {
            font-size: 22px;
            color: #3949ab;
            margin: 35px 0 20px;
        }
        p {
            margin-bottom: 20px;
            font-size: 16px;
            text-align: justify;
        }
        .highlight {
            font-weight: 700;
            color: #1a237e;
        }
        .emoji {
            margin-right: 8px;
        }
        .img-container {
            margin: 30px 0;
            text-align: center;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        ul, ol {
            margin: 25px 0 30px 40px;
        }
        li {
            margin-bottom: 15px;
            font-size: 16px;
        }
        .tags-container, .categories-container {
            margin: 40px 0;
            padding: 20px;
            background-color: #e8eaf6;
            border-radius: 10px;
        }
        .tags, .categories {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 15px;
        }
        .tag-link, .category-link {
            padding: 8px 16px;
            border-radius: 20px;
            text-decoration: none;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.3s;
        }
        .tag-link {
            background-color: #c5cae9;
            color: #1a237e;
        }
        .tag-link:hover {
            background-color: #9fa8da;
            color: white;
        }
        .category-link {
            background-color: #ffecb3;
            color: #e65100;
        }
        .category-link:hover {
            background-color: #ffd54f;
            color: #c62828;
        }
        footer {
            margin-top: 60px;
            padding: 40px 0;
            background-color: #1a237e;
            color: white;
            border-radius: 10px 10px 0 0;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .copyright {
            text-align: center;
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 14px;
            color: #e0e0e0;
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: #1a237e;
                padding: 20px;
                gap: 15px;
            }
            .nav-links.active {
                display: flex;
            }
            .mobile-menu-btn {
                display: block;
            }
            h1 {
                font-size: 28px;
            }
            h2 {
                font-size: 24px;
            }
            h3 {
                font-size: 20px;
            }
            p, li {
                font-size: 15px;
            }
            .btn {
                width: 100%;
                margin: 10px 0;
            }
        }