:root {
            --primary-blue: #1a365d;
            --accent-gold: #d4af37;
            --light-gray: #f8f9fa;
            --medium-gray: #e9ecef;
            --dark-gray: #6c757d;
            --text-dark: #212529;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --border-radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: #fff;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-blue) 0%, #2d4a7a 100%);
            color: white;
            padding: 1.2rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: 2px;
            color: var(--accent-gold);
            text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
        }
        .my-logo span {
            color: white;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-desktop a:hover {
            color: var(--accent-gold);
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent-gold);
            transition: var(--transition);
        }
        .nav-desktop a:hover::after {
            width: 100%;
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger-btn {
                display: block;
            }
        }
        .mobile-nav {
            position: fixed;
            top: 0;
            right: -100%;
            height: 100vh;
            width: 280px;
            background-color: var(--primary-blue);
            padding: 2rem;
            transition: var(--transition);
            z-index: 9999;
            box-shadow: -5px 0 15px rgba(0,0,0,0.2);
        }
        .mobile-nav.active {
            right: 0;
        }
        .mobile-nav a {
            display: block;
            padding: 1rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            font-size: 1.1rem;
        }
        .mobile-nav a:hover {
            color: var(--accent-gold);
        }
        .close-btn {
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            position: absolute;
            top: 1rem;
            right: 1.5rem;
            cursor: pointer;
        }
        .overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.5);
            z-index: 9998;
            display: none;
        }
        .overlay.active {
            display: block;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: var(--light-gray);
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb a {
            color: var(--primary-blue);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: var(--dark-gray);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            min-height: 2000px; 
        }
        .sidebar {
            background-color: var(--light-gray);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            margin-bottom: 2rem;
        }
        .sidebar-widget h3 {
            margin-bottom: 1rem;
            color: var(--primary-blue);
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent-gold);
        }
        .search-widget form {
            display: flex;
        }
        .search-widget input {
            flex-grow: 1;
            padding: 0.8rem;
            border: 1px solid var(--medium-gray);
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-widget button {
            background-color: var(--primary-blue);
            color: white;
            border: none;
            padding: 0 1.2rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-size: 1.1rem;
        }
        .search-widget button:hover {
            background-color: #152a4d;
        }
        .related-links a {
            display: block;
            padding: 0.7rem 1rem;
            margin-bottom: 0.5rem;
            background-color: white;
            border-radius: var(--border-radius);
            border-left: 4px solid var(--accent-gold);
            transition: var(--transition);
        }
        .related-links a:hover {
            background-color: var(--medium-gray);
            transform: translateX(5px);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-blue);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-blue);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--medium-gray);
        }
        h3 {
            font-size: 1.6rem;
            color: #2d4a7a;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--dark-gray);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            font-weight: 500;
            color: var(--primary-blue);
            background-color: var(--light-gray);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border-left: 5px solid var(--accent-gold);
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #fff9e6;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            border: 1px solid #ffeaa7;
        }
        .highlight p:last-child {
            margin-bottom: 0;
        }
        b, strong {
            color: var(--primary-blue);
        }
        .text-center {
            text-align: center;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3em;
        }
        .article-image {
            margin: 2.5rem auto;
            max-width: 800px;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .article-image figcaption {
            padding: 0.8rem;
            background-color: var(--light-gray);
            font-size: 0.9rem;
            color: var(--dark-gray);
            text-align: center;
        }
        .internal-link {
            color: var(--primary-blue);
            font-weight: 600;
            border-bottom: 1px dotted var(--accent-gold);
        }
        .internal-link:hover {
            color: var(--accent-gold);
            border-bottom-style: solid;
        }
        .user-interaction {
            background-color: var(--light-gray);
            padding: 2.5rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
        }
        .user-interaction h2 {
            border: none;
        }
        .rating-section, .comment-section {
            margin-bottom: 2.5rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 1.8rem;
            color: var(--medium-gray);
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--accent-gold);
        }
        .submit-btn {
            background-color: var(--primary-blue);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: var(--border-radius);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-block;
        }
        .submit-btn:hover {
            background-color: #152a4d;
            transform: translateY(-2px);
        }
        .comment-section textarea {
            width: 100%;
            padding: 1rem;
            border: 1px solid var(--medium-gray);
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            margin-top: 1rem;
            min-height: 150px;
            resize: vertical;
        }
        .site-footer {
            background-color: var(--primary-blue);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h3 {
            color: var(--accent-gold);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .friend-links {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .friend-links a {
            color: #ccc;
        }
        .friend-links a:hover {
            color: white;
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        .last-updated {
            background-color: #e9f7fe;
            padding: 0.8rem 1.5rem;
            border-radius: var(--border-radius);
            margin: 1.5rem 0;
            color: #0c5460;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 0.7rem;
        }
        .last-updated i {
            color: var(--primary-blue);
        }