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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f8f9fa;
            color: #1a202c;
            line-height: 1.6;
        }

        .top-nav {
            background: #2d3748;
            color: white;
            padding: 0;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .nav-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 20px;
        }

        .logo {
            font-size: 24px;
            font-weight: 700;
            padding: 15px 0;
            color: white;
            text-decoration: none;
        }

        .logo span {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 0;
        }

        .nav-menu li a {
            color: white;
            text-decoration: none;
            padding: 20px 20px;
            display: block;
            transition: all 0.3s;
            font-weight: 500;
        }

        .nav-menu li a:hover, .nav-menu li a.active {
            background: rgba(102, 126, 234, 0.2);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 24px;
            cursor: pointer;
            padding: 10px;
        }

        .hero {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 60px 20px;
            text-align: center;
        }

        .hero h1 {
            font-size: 48px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .hero p {
            font-size: 20px;
            opacity: 0.95;
            max-width: 700px;
            margin: 0 auto;
        }

        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 40px 20px;
            display: grid;
            grid-template-columns: 300px 1fr 300px;
            gap: 30px;
        }

        .sidebar-left, .sidebar-right {
            position: sticky;
            top: 80px;
            height: fit-content;
        }

        .sidebar-ad {
            background: #ffffff;
            border-radius: 10px;
            padding: 20px;
            margin-bottom: 20px;
            min-height: 600px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid #e9ecef;
        }

        .ad-placeholder {
            color: #6c757d;
            font-size: 11px;
            text-transform: uppercase;
        }

        .main-content {
            background: white;
        }

        .blog-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
            margin-bottom: 30px;
        }

        .blog-card {
            background: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
            transition: all 0.3s;
        }

        .blog-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
        }

        .blog-image {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            height: 200px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 48px;
        }

        .blog-content {
            padding: 25px;
        }

        .blog-category {
            display: inline-block;
            background: #667eea;
            color: white;
            padding: 5px 12px;
            border-radius: 15px;
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .blog-card h3 {
            font-size: 22px;
            color: #2d3748;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .blog-excerpt {
            color: #4a5568;
            font-size: 15px;
            line-height: 1.6;
            margin-bottom: 15px;
        }

        .blog-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: #718096;
            font-size: 13px;
            padding-top: 15px;
            border-top: 1px solid #e2e8f0;
        }

        .read-more {
            color: #667eea;
            font-weight: 600;
            text-decoration: none;
            transition: color 0.3s;
        }

        .read-more:hover {
            color: #764ba2;
        }

        footer {
            background: #2d3748;
            color: white;
            padding: 50px 20px 20px;
            margin-top: 60px;
        }

        .footer-content {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-section h4 {
            font-size: 18px;
            margin-bottom: 20px;
            color: #667eea;
        }

        .footer-section ul {
            list-style: none;
        }

        .footer-section ul li {
            margin-bottom: 10px;
        }

        .footer-section ul li a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-section ul li a:hover {
            color: #667eea;
        }

        .footer-section p {
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.6;
            font-size: 14px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
        }

        @media (max-width: 1200px) {
            .container {
                grid-template-columns: 250px 1fr;
            }
            .sidebar-right {
                display: none;
            }
        }

        @media (max-width: 968px) {
            .container {
                grid-template-columns: 1fr;
            }
            .sidebar-left {
                position: static;
            }
            .blog-grid {
                grid-template-columns: 1fr;
            }
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #2d3748;
                flex-direction: column;
            }

            .nav-menu.active {
                display: flex;
            }

            .mobile-menu-btn {
                display: block;
            }

            .hero h1 {
                font-size: 32px;
            }

            .footer-content {
                grid-template-columns: 1fr;
            }
        }