:root {
            --primary-red: #e10600;
            --primary-blue: #0038a8;
            --primary-yellow: #ffde00;
            --dark-bg: #1a1a2e;
            --light-bg: #f8f9fa;
            --text-dark: #2d3748;
            --text-light: #f7fafc;
            --accent-orange: #ff6b35;
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            --border-radius: 8px;
            --container-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
        }
        .site-header {
            background: linear-gradient(to right, var(--dark-bg), var(--primary-blue));
            color: var(--text-light);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-family: 'Arial Black', Impact, sans-serif;
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--primary-yellow);
            text-decoration: none;
            text-transform: uppercase;
            letter-spacing: 2px;
            text-shadow: 3px 3px 0 var(--primary-red);
            transition: var(--transition);
        }
        .my-logo:hover {
            color: white;
            text-shadow: 3px 3px 0 var(--accent-orange);
            transform: scale(1.05);
        }
        .my-logo span {
            color: var(--primary-red);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
            position: relative;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background: var(--primary-yellow);
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 80%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            background: rgba(255, 255, 255, 0.1);
            padding: 0.8rem 1.5rem;
            margin-top: 0.5rem;
            border-radius: var(--border-radius);
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--primary-yellow);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .container {
            max-width: var(--container-width);
            margin: 2rem auto;
            padding: 0 1.5rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        article {
            background: white;
            border-radius: 16px;
            padding: 2.5rem;
            box-shadow: var(--shadow);
            overflow: hidden;
        }
        h1 {
            color: var(--primary-blue);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 5px solid var(--primary-red);
            padding-bottom: 0.5rem;
        }
        h2 {
            color: var(--primary-red);
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-left: 0.5rem;
            border-left: 6px solid var(--accent-orange);
        }
        h3 {
            color: var(--dark-bg);
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: #555;
            font-size: 1.3rem;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--primary-blue);
            background: linear-gradient(90deg, #f0f4ff, transparent);
            padding: 1.2rem;
            border-radius: var(--border-radius);
            border-left: 4px solid var(--primary-blue);
            margin-bottom: 2rem;
        }
        .highlight {
            background: linear-gradient(120deg, var(--primary-yellow) 0%, transparent 80%);
            padding: 0.2rem 0.5rem;
            font-weight: 700;
            border-radius: 4px;
        }
        .keyword-link {
            color: var(--primary-blue);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 2px dotted var(--primary-blue);
            padding-bottom: 1px;
            transition: var(--transition);
        }
        .keyword-link:hover {
            color: var(--primary-red);
            border-bottom-style: solid;
        }
        .featured-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 12px;
            margin: 2rem 0;
            border: 5px solid var(--primary-yellow);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
            transition: transform 0.5s ease;
        }
        .featured-image:hover {
            transform: scale(1.01);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: -1.5rem;
            margin-bottom: 2rem;
            font-size: 0.95rem;
        }
        aside {
            background: white;
            border-radius: 16px;
            padding: 2rem;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            margin-bottom: 2.5rem;
        }
        .sidebar-widget h3 {
            color: var(--primary-red);
            font-size: 1.4rem;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--primary-yellow);
        }
        .search-form {
            display: flex;
            margin-bottom: 1rem;
        }
        .search-input {
            flex: 1;
            padding: 0.9rem 1rem;
            border: 2px solid #ddd;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(0, 56, 168, 0.2);
        }
        .search-btn {
            background: linear-gradient(to right, var(--primary-blue), var(--dark-bg));
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .search-btn:hover {
            background: linear-gradient(to right, var(--primary-red), var(--primary-blue));
            transform: scale(1.05);
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            font-size: 1.8rem;
            gap: 0.2rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label {
            color: var(--primary-yellow);
        }
        .form-input, .form-textarea {
            width: 100%;
            padding: 0.9rem 1rem;
            border: 2px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
            font-family: inherit;
            transition: var(--transition);
        }
        .form-textarea {
            min-height: 120px;
            resize: vertical;
        }
        .form-input:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(0, 56, 168, 0.2);
        }
        .submit-btn {
            background: linear-gradient(to right, var(--primary-red), var(--accent-orange));
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            transition: var(--transition);
            align-self: flex-start;
        }
        .submit-btn:hover {
            background: linear-gradient(to right, var(--accent-orange), var(--primary-red));
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(255, 107, 53, 0.4);
        }
        .related-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .link-card {
            background: linear-gradient(145deg, #ffffff, #f0f0f0);
            border-radius: var(--border-radius);
            padding: 1.5rem;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .link-card:hover {
            transform: translateY(-8px);
            border-color: var(--primary-blue);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
        }
        .link-card h4 {
            margin-top: 0;
            color: var(--primary-blue);
        }
        footer {
            background: linear-gradient(to right, var(--dark-bg), #16213e);
            color: var(--text-light);
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 1.5rem;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-section h3 {
            color: var(--primary-yellow);
            font-size: 1.4rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.5rem;
        }
        .footer-section h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background: var(--primary-red);
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .footer-links a:hover {
            color: var(--primary-yellow);
            transform: translateX(5px);
        }
        friend-link {
            display: block;
            padding: 0.8rem 1rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 6px;
            margin-bottom: 0.8rem;
            border-left: 4px solid var(--primary-blue);
            transition: var(--transition);
        }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateX(5px);
        }
        friend-link a {
            color: var(--text-light);
            text-decoration: none;
            font-weight: 500;
            display: block;
        }
        friend-link a:hover {
            color: var(--primary-yellow);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 1024px) {
            .container {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--dark-bg);
                padding: 1rem;
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
                border-radius: 0 0 12px 12px;
            }
            .main-nav.active ul {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .header-container {
                padding: 0 1rem;
            }
            .container, .footer-container {
                padding: 0 1rem;
            }
            article {
                padding: 1.8rem;
            }
            .related-links {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.9rem;
            }
            .my-logo {
                font-size: 1.8rem;
            }
            .lead {
                font-size: 1.1rem;
                padding: 1rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input, .search-btn {
                border-radius: var(--border-radius);
                width: 100%;
            }
            .search-btn {
                margin-top: 0.5rem;
                padding: 0.8rem;
            }
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        article, aside {
            animation: fadeInUp 0.6s ease-out;
        }
        .pulse {
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(255, 222, 0, 0.7); }
            70% { box-shadow: 0 0 0 10px rgba(255, 222, 0, 0); }
            100% { box-shadow: 0 0 0 0 rgba(255, 222, 0, 0); }
        }
        .stat-box {
            background: linear-gradient(135deg, var(--primary-blue), var(--dark-bg));
            color: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin: 1.5rem 0;
            border-left: 6px solid var(--primary-yellow);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--primary-yellow);
            display: block;
            line-height: 1;
        }
        .quote {
            font-style: italic;
            padding: 2rem;
            background: linear-gradient(90deg, rgba(0, 56, 168, 0.1), transparent);
            border-radius: var(--border-radius);
            border-left: 6px solid var(--primary-red);
            margin: 2rem 0;
            font-size: 1.2rem;
            color: var(--text-dark);
        }
        .quote-author {
            text-align: right;
            font-weight: 600;
            color: var(--primary-blue);
            margin-top: 1rem;
        }
        .tip-box {
            background: linear-gradient(135deg, #e3f2fd, #bbdefb);
            border: 2px solid #2196f3;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            margin: 1.5rem 0;
            position: relative;
        }
        .tip-box::before {
            content: '💡 PRO TIP';
            position: absolute;
            top: -12px;
            left: 20px;
            background: #2196f3;
            color: white;
            font-size: 0.8rem;
            font-weight: bold;
            padding: 0.3rem 0.8rem;
            border-radius: 12px;
        }