:root {
            --primary-color: #1a5276;
            --secondary-color: #e74c3c;
            --accent-color: #f39c12;
            --text-color: #2c3e50;
            --bg-light: #ecf0f1;
        }
        body {
            font-family: 'Segoe UI', system-ui, sans-serif;
            color: var(--text-color);
            line-height: 1.7;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--accent-color) !important;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .hero-section {
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://via.placeholder.com/1200x600') center/cover no-repeat;
            color: white;
            padding: 100px 0;
            text-align: center;
            margin-bottom: 40px;
        }
        .content-section {
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            padding: 40px;
            margin-bottom: 30px;
        }
        h1, h2, h3 {
            color: var(--primary-color);
            margin-bottom: 1.5rem;
        }
        h1 {
            font-size: 2.8rem;
            font-weight: 800;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
        }
        h2 {
            font-size: 2.2rem;
            border-left: 5px solid var(--accent-color);
            padding-left: 15px;
            margin-top: 2.5rem;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--secondary-color);
            margin-top: 2rem;
        }
        .key-point {
            background: var(--bg-light);
            border-left: 4px solid var(--accent-color);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .feature-icon {
            font-size: 2.5rem;
            color: var(--secondary-color);
            margin-right: 15px;
            vertical-align: middle;
        }
        .img-container {
            text-align: center;
            margin: 30px 0;
        }
        .img-container img {
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
            max-width: 100%;
            height: auto;
        }
        .nav-link {
            color: var(--primary-color) !important;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .nav-link:hover {
            color: var(--secondary-color) !important;
            transform: translateX(5px);
        }
        footer {
            background: var(--primary-color);
            color: white;
            padding: 40px 0 20px;
            margin-top: 50px;
        }
        .highlight {
            background: linear-gradient(120deg, #f6d365 0%, #fda085 100%);
            padding: 2px 6px;
            border-radius: 4px;
            font-weight: 600;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .hero-section { padding: 60px 0; }
            .content-section { padding: 25px; }
        }
        .sticky-nav {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(10px);
        }