:root {
            --primary: #2c5aa0;
            --secondary: #e31837;
            --accent: #ffcc00;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --transition: all 0.3s ease;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --radius: 8px;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background-color: #fff;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary), #1a3a6e);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(255,255,255,0.2);
        }
        .my-logo {
            font-family: 'Georgia', serif;
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--accent);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            font-size: 1.8rem;
        }
        .my-logo span {
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .search-form {
            display: flex;
            max-width: 400px;
            width: 100%;
        }
        .search-input {
            flex-grow: 1;
            padding: 12px 18px;
            border: none;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
            outline: none;
        }
        .search-btn {
            background-color: var(--accent);
            color: var(--dark);
            border: none;
            border-radius: 0 var(--radius) var(--radius) 0;
            padding: 0 20px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: #ffdb4d;
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 15px;
        }
        .breadcrumb {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.85);
        }
        .breadcrumb a {
            color: var(--accent);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 5px;
            transition: var(--transition);
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        .hero {
            background: linear-gradient(rgba(44, 90, 160, 0.9), rgba(44, 90, 160, 0.8)), url('https://images.unsplash.com/photo-1591799264318-7e6ef8ddb7ea?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') no-repeat center center/cover;
            color: white;
            padding: 4rem 0;
            text-align: center;
            margin-bottom: 3rem;
        }
        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-shadow: 2px 2px 8px rgba(0,0,0,0.4);
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            opacity: 0.95;
        }
        .cta-button {
            display: inline-block;
            background-color: var(--accent);
            color: var(--dark);
            padding: 16px 40px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            font-size: 1.2rem;
            transition: var(--transition);
            box-shadow: 0 6px 15px rgba(0,0,0,0.2);
        }
        .cta-button:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.3);
            background-color: #ffd633;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin-bottom: 4rem;
        }
        .main-content {
            background: var(--light);
            padding: 30px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .sidebar {
            background: #fff;
            padding: 25px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 140px;
        }
        h1, h2, h3, h4 {
            color: var(--primary);
            margin-bottom: 1.2rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            border-bottom: 3px solid var(--accent);
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2.2rem;
            margin-top: 2.5rem;
            padding-bottom: 10px;
            border-bottom: 2px solid #eee;
        }
        h3 {
            font-size: 1.8rem;
            margin-top: 2rem;
            color: var(--secondary);
        }
        h4 {
            font-size: 1.4rem;
            margin-top: 1.8rem;
            color: var(--dark);
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .lead {
            font-size: 1.25rem;
            font-weight: 500;
            color: var(--gray);
            line-height: 1.8;
        }
        .highlight {
            background-color: rgba(255, 204, 0, 0.2);
            padding: 2px 6px;
            border-radius: 4px;
            font-weight: 600;
        }
        .info-box {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            border-left: 5px solid var(--primary);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
            box-shadow: 3px 3px 10px rgba(0,0,0,0.05);
        }
        .info-box h3 {
            color: var(--primary);
            margin-top: 0;
        }
        .article-img {
            width: 100%;
            height: auto;
            border-radius: var(--radius);
            margin: 30px 0;
            box-shadow: var(--shadow);
            transition: transform 0.5s ease;
        }
        .article-img:hover {
            transform: scale(1.02);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: -20px;
            margin-bottom: 30px;
            font-size: 0.95rem;
        }
        a.content-link {
            color: var(--primary);
            text-decoration: none;
            border-bottom: 1px dotted var(--primary);
            transition: var(--transition);
        }
        a.content-link:hover {
            color: var(--secondary);
            border-bottom: 1px solid var(--secondary);
        }
        ul.content-list, ol.content-list {
            margin-left: 25px;
            margin-bottom: 25px;
        }
        ul.content-list li, ol.content-list li {
            margin-bottom: 10px;
        }
        .interactive-section {
            background: white;
            border: 2px solid #e9ecef;
            border-radius: var(--radius);
            padding: 25px;
            margin: 40px 0;
            box-shadow: var(--shadow);
        }
        .interactive-section h3 {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--primary);
        }
        .rating-section {
            text-align: center;
            padding: 20px;
            background: #f8f9fa;
            border-radius: var(--radius);
        }
        .stars {
            font-size: 2rem;
            color: #ffcc00;
            margin: 15px 0;
            cursor: pointer;
        }
        .stars i {
            margin: 0 3px;
            transition: var(--transition);
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
        }
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ced4da;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(44, 90, 160, 0.2);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background-color: var(--primary);
            color: white;
            border: none;
            border-radius: var(--radius);
            padding: 14px 30px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: block;
            width: 100%;
        }
        .submit-btn:hover {
            background-color: #1a3a6e;
            transform: translateY(-3px);
        }
        .widget {
            margin-bottom: 30px;
            padding-bottom: 25px;
            border-bottom: 1px solid #eee;
        }
        .widget:last-child {
            border-bottom: none;
        }
        .widget-title {
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent);
        }
        .related-links ul {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 12px;
            padding-left: 20px;
            position: relative;
        }
        .related-links li:before {
            content: "▸";
            color: var(--secondary);
            position: absolute;
            left: 0;
        }
        .related-links a {
            color: var(--dark);
            text-decoration: none;
            transition: var(--transition);
        }
        .related-links a:hover {
            color: var(--primary);
            padding-left: 5px;
        }
        .update-info {
            background: #e8f5e9;
            padding: 15px;
            border-radius: var(--radius);
            font-size: 0.9rem;
            color: #2e7d32;
        }
        .site-footer {
            background-color: var(--dark);
            color: white;
            padding: 4rem 0 2rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 3rem;
        }
        .footer-logo {
            font-family: 'Georgia', serif;
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 20px;
            display: block;
        }
        .footer-links h4 {
            color: var(--accent);
            font-size: 1.3rem;
            margin-bottom: 20px;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.1);
            padding: 20px;
            border-radius: var(--radius);
            margin-top: 20px;
        }
        friend-link a {
            color: var(--accent);
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
            h1 {
                font-size: 2.5rem;
            }
            h2 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                gap: 20px;
            }
            .search-form {
                max-width: 100%;
            }
            .main-nav {
                display: none;
                width: 100%;
                margin-top: 20px;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 15px;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 25px;
                right: 20px;
            }
            .nav-container {
                flex-direction: column;
                align-items: flex-start;
            }
            .breadcrumb {
                margin-top: 15px;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 1.1rem;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 576px) {
            .container {
                padding: 0 15px;
            }
            .main-content, .sidebar {
                padding: 20px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .hero {
                padding: 3rem 0;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.8s ease forwards;
        }
        .delay-1 { animation-delay: 0.2s; }
        .delay-2 { animation-delay: 0.4s; }