:root {
            --primary: #2c3e50;
            --secondary: #3498db;
            --accent: #e74c3c;
            --light: #ecf0f1;
            --dark: #2c3e50;
            --text: #333;
            --text-light: #7f8c8d;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --radius: 8px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text);
            background-color: #f9f9f9;
            padding: 0;
            margin: 0;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        header {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            padding: 2rem 0;
            box-shadow: var(--shadow);
        }

        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 700;
        }

        .logo span {
            color: var(--accent);
        }

        nav ul {
            display: flex;
            list-style: none;
        }

        nav li {
            margin-left: 1.5rem;
        }

        nav a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }

        nav a:hover {
            color: var(--light);
        }

        .hero {
            text-align: center;
            padding: 3rem 0;
            background-color: white;
            margin-bottom: 2rem;
            border-radius: 0 0 var(--radius) var(--radius);
            box-shadow: var(--shadow);
        }

        .hero h1 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            color: var(--primary);
        }

        .hero p {
            font-size: 1.2rem;
            color: var(--text-light);
            max-width: 800px;
            margin: 0 auto 1.5rem;
        }

        .meta {
            display: flex;
            justify-content: center;
            gap: 2rem;
            color: var(--text-light);
            font-size: 0.9rem;
        }

        .content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
            margin-bottom: 3rem;
        }

        .main-content {
            background: white;
            padding: 2rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }

        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            height: fit-content;
        }

        h2 {
            color: var(--primary);
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--light);
        }

        h2:first-child {
            margin-top: 0;
        }

        h3 {
            color: var(--secondary);
            margin: 1.5rem 0 0.5rem;
        }

        p {
            margin-bottom: 1rem;
        }

        .step {
            margin-bottom: 2.5rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid var(--light);
        }

        .step:last-child {
            border-bottom: none;
        }

        .step-number {
            display: inline-block;
            background: var(--secondary);
            color: white;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            text-align: center;
            line-height: 30px;
            margin-right: 10px;
            font-weight: bold;
        }

        .image-container {
            margin: 1.5rem 0;
            text-align: center;
            border: 1px solid #eee;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }

        .image-container img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .image-caption {
            padding: 0.8rem;
            background: var(--light);
            font-size: 0.9rem;
            color: var(--text-light);
        }

        .tip-box {
            background: #e8f4fc;
            border-left: 4px solid var(--secondary);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }

        .warning-box {
            background: #fde8e8;
            border-left: 4px solid var(--accent);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }

        .code-block {
            background: #2d3748;
            color: #e2e8f0;
            padding: 1.5rem;
            border-radius: var(--radius);
            margin: 1.5rem 0;
            overflow-x: auto;
            font-family: 'Courier New', monospace;
            font-size: 0.9rem;
        }

        .sidebar-widget {
            margin-bottom: 2rem;
        }

        .sidebar-widget:last-child {
            margin-bottom: 0;
        }

        .sidebar-widget h3 {
            color: var(--primary);
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--light);
        }

        .widget-list {
            list-style: none;
        }

        .widget-list li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px solid #f0f0f0;
        }

        .widget-list li:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }

        .widget-list a {
            color: var(--text);
            text-decoration: none;
            transition: color 0.3s;
            display: block;
        }

        .widget-list a:hover {
            color: var(--secondary);
        }

        .cta-box {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            padding: 1.5rem;
            border-radius: var(--radius);
            text-align: center;
        }

        .cta-box h3 {
            color: white;
            margin-bottom: 1rem;
        }

        .btn {
            display: inline-block;
            background: var(--accent);
            color: white;
            padding: 0.8rem 1.5rem;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
        }

        .btn:hover {
            background: #c0392b;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        }

        footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0;
            margin-top: 3rem;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
        }

        .footer-column h4 {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 0.8rem;
        }

        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-links a:hover {
            color: white;
        }

        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #34495e;
            color: #bdc3c7;
            font-size: 0.9rem;
        }

        .subscription-form {
            margin-top: 1rem;
        }

        .subscription-form input {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 0.8rem;
            border: 1px solid #ddd;
            border-radius: var(--radius);
            font-size: 0.9rem;
        }

        .social-link {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-top: 1rem;
            padding: 0.8rem;
            background: #f8f9fa;
            border-radius: var(--radius);
            text-decoration: none;
            color: var(--text);
            transition: all 0.3s;
        }

        .social-link:hover {
            background: var(--light);
            color: var(--secondary);
        }

        .social-icon {
            font-size: 1.2rem;
        }

        @media (max-width: 992px) {
            .content {
                grid-template-columns: 1fr;
            }
            
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                text-align: center;
            }
            
            nav ul {
                margin-top: 1rem;
                justify-content: center;
            }
            
            nav li {
                margin: 0 0.8rem;
            }
            
            .hero h1 {
                font-size: 2rem;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
            }
        }