* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #1a237e;
            --secondary: #ff5722;
            --accent: #4caf50;
            --light: #f5f5f5;
            --dark: #212121;
            --gray: #757575;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        body {
            background-color: #f9f9f9;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        header {
            background: linear-gradient(135deg, var(--primary) 0%, #283593 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: 1px;
        }
        .logo a {
            color: white;
        }
        .logo span {
            color: var(--secondary);
        }
        .search-box {
            display: flex;
            background: white;
            border-radius: 30px;
            overflow: hidden;
            width: 300px;
        }
        .search-box input {
            flex: 1;
            border: none;
            padding: 12px 20px;
            outline: none;
        }
        .search-box button {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 0 20px;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: #e64a19;
        }
        nav {
            background-color: var(--dark);
            padding: 0;
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .main-nav {
            display: flex;
            list-style: none;
        }
        .main-nav li {
            position: relative;
        }
        .main-nav a {
            color: white;
            padding: 18px 22px;
            display: block;
            font-weight: 500;
        }
        .main-nav a:hover, .main-nav a.active {
            background-color: var(--primary);
            color: #ffcc80;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 10px;
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: var(--light);
            font-size: 0.9rem;
            border-bottom: 1px solid #e0e0e0;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb i {
            margin: 0 8px;
            color: #bdbdbd;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        article {
            background: white;
            padding: 40px;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .meta {
            color: var(--gray);
            font-size: 0.95rem;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 1px dashed #e0e0e0;
        }
        .meta span {
            margin-right: 20px;
        }
        .meta i {
            margin-right: 5px;
        }
        h2 {
            font-size: 1.8rem;
            color: var(--primary);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent);
        }
        h3 {
            font-size: 1.4rem;
            color: var(--dark);
            margin: 30px 0 15px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
        }
        .highlight {
            background-color: #e8f5e9;
            border-left: 4px solid var(--accent);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .tips {
            background-color: #fff3e0;
            border-left: 4px solid var(--secondary);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .float-img {
            float: right;
            margin: 15px 0 20px 30px;
            width: 400px;
            border-radius: 8px;
            box-shadow: 0 6px 15px rgba(0,0,0,0.1);
        }
        .stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat-box {
            background: linear-gradient(145deg, #1a237e, #3949ab);
            color: white;
            padding: 25px;
            border-radius: 10px;
            text-align: center;
            box-shadow: var(--shadow);
        }
        .stat-box h4 {
            font-size: 2.5rem;
            margin-bottom: 10px;
        }
        .interaction {
            background-color: #f5f5f5;
            padding: 30px;
            border-radius: 10px;
            margin: 40px 0;
            border: 1px solid #e0e0e0;
        }
        .rating {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }
        .stars {
            color: #ffc107;
            font-size: 1.5rem;
            margin-right: 15px;
        }
        .stars i {
            cursor: pointer;
            transition: var(--transition);
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        form {
            margin-top: 20px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.1);
        }
        button[type="submit"] {
            background: linear-gradient(to right, var(--primary), var(--secondary));
            color: white;
            border: none;
            padding: 14px 30px;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        button[type="submit"]:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(0,0,0,0.15);
        }
        aside {
            position: sticky;
            top: 120px;
            height: fit-content;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: 10px;
            box-shadow: var(--shadow);
            margin-bottom: 30px;
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            margin-bottom: 20px;
            color: var(--primary);
            padding-bottom: 10px;
            border-bottom: 2px solid #e0e0e0;
        }
        .widget-list {
            list-style: none;
        }
        .widget-list li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dotted #e0e0e0;
        }
        .widget-list a {
            display: flex;
            align-items: center;
            color: var(--dark);
        }
        .widget-list a:hover {
            color: var(--secondary);
        }
        .widget-list i {
            margin-right: 10px;
            color: var(--accent);
        }
        .download-box {
            background: linear-gradient(135deg, var(--primary), #0d47a1);
            color: white;
            padding: 25px;
            border-radius: 10px;
            text-align: center;
        }
        .download-box h3 {
            color: white;
            border: none;
        }
        .download-box p {
            font-size: 1rem;
            margin-bottom: 20px;
        }
        .btn-download {
            display: inline-block;
            background-color: var(--secondary);
            color: white;
            padding: 14px 28px;
            border-radius: 50px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            transition: var(--transition);
        }
        .btn-download:hover {
            background-color: #e64a19;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }
        .web-links {
            background-color: var(--light);
            padding: 40px 0;
            border-top: 1px solid #e0e0e0;
            border-bottom: 1px solid #e0e0e0;
        }
        .links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
        }
        .web-link {
            background: white;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 3px 8px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 15px rgba(0,0,0,0.08);
        }
        .web-link a {
            font-weight: 600;
            color: var(--dark);
            display: block;
        }
        .web-link a:hover {
            color: var(--primary);
        }
        footer {
            background-color: var(--dark);
            color: #bdbdbd;
            padding: 50px 0 20px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 15px;
            color: white;
        }
        .footer-logo span {
            color: var(--secondary);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #424242;
            font-size: 0.9rem;
        }
        .social-icons {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        .social-icons a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: #424242;
            color: white;
            border-radius: 50%;
            transition: var(--transition);
        }
        .social-icons a:hover {
            background-color: var(--secondary);
            transform: scale(1.1);
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            .float-img {
                float: none;
                width: 100%;
                margin: 20px 0;
            }
            .search-box {
                width: 250px;
            }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                gap: 20px;
            }
            .search-box {
                width: 100%;
                max-width: 400px;
            }
            .hamburger {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 130px;
                left: -100%;
                width: 100%;
                background-color: var(--dark);
                flex-direction: column;
                transition: 0.5s ease;
                z-index: 999;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            .main-nav.active {
                left: 0;
            }
            .main-nav li {
                width: 100%;
            }
            .main-nav a {
                padding: 18px 30px;
                border-bottom: 1px solid #424242;
            }
            h1 {
                font-size: 2rem;
            }
            article {
                padding: 25px;
            }
            .stats {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .meta span {
                display: block;
                margin-bottom: 5px;
            }
        }