:root {
            --primary: #c62828;
            --primary-dark: #8e0000;
            --secondary: #1a237e;
            --accent: #ffab00;
            --light: #f5f5f5;
            --dark: #212121;
            --gray: #757575;
            --gray-light: #e0e0e0;
            --success: #2e7d32;
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --font-body: 'Roboto', 'Helvetica Neue', Arial, sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-body);
            line-height: 1.7;
            color: var(--dark);
            background-color: #fff;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--dark) 0%, #424242 100%);
            color: white;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(to right, var(--primary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: 1px;
        }
        .my-logo a {
            background: none;
            color: inherit;
        }
        .mobile-toggle {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--light);
        }
        nav {
            background-color: rgba(0, 0, 0, 0.9);
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            position: relative;
        }
        .nav-links a {
            display: block;
            padding: 18px 22px;
            color: white;
            font-weight: 500;
            text-transform: uppercase;
            font-size: 0.9rem;
            letter-spacing: 0.5px;
        }
        .nav-links a:hover,
        .nav-links a.active {
            background-color: var(--primary);
            color: white;
        }
        .nav-search {
            display: flex;
        }
        .nav-search input {
            padding: 10px 15px;
            border: none;
            border-radius: 4px 0 0 4px;
            width: 220px;
            font-size: 0.9rem;
        }
        .nav-search button {
            background-color: var(--primary);
            color: white;
            border: none;
            border-radius: 0 4px 4px 0;
            padding: 0 18px;
            cursor: pointer;
            transition: background 0.3s;
        }
        .nav-search button:hover {
            background-color: var(--primary-dark);
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #f8f8f8;
            border-bottom: 1px solid var(--gray-light);
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin: 0 10px;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        main {
            flex: 1;
            padding: 40px 0;
        }
        .article-header {
            margin-bottom: 40px;
            border-bottom: 3px solid var(--primary);
            padding-bottom: 20px;
        }
        .article-header h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            color: var(--dark);
            margin-bottom: 15px;
            line-height: 1.2;
        }
        .meta-info {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            color: var(--gray);
            font-size: 0.9rem;
        }
        .meta-info i {
            margin-right: 5px;
        }
        .content-area {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            .content-area {
                grid-template-columns: 1fr;
            }
        }
        .article-content h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            color: var(--secondary);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px dashed var(--gray-light);
        }
        .article-content h3 {
            font-size: 1.6rem;
            color: var(--primary-dark);
            margin: 30px 0 15px;
        }
        .article-content h4 {
            font-size: 1.3rem;
            color: var(--dark);
            margin: 25px 0 12px;
        }
        .article-content p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .article-content img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 30px auto;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            border: 1px solid #eee;
        }
        .highlight-box {
            background: linear-gradient(135deg, #fff8e1 0%, #ffecb3 100%);
            border-left: 5px solid var(--accent);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
        }
        .highlight-box h4 {
            color: #e65100;
            margin-top: 0;
        }
        .link-list {
            background-color: #f9f9f9;
            padding: 25px;
            border-radius: 8px;
            margin: 30px 0;
        }
        .link-list h3 {
            margin-top: 0;
            color: var(--secondary);
        }
        .link-list ul {
            list-style-position: inside;
            columns: 2;
        }
        .link-list li {
            margin-bottom: 10px;
            padding-left: 5px;
        }
        @media (max-width: 768px) {
            .link-list ul {
                columns: 1;
            }
        }
        .sidebar-widget {
            background-color: #f9f9f9;
            border-radius: 8px;
            padding: 25px;
            margin-bottom: 30px;
            border: 1px solid #eee;
        }
        .sidebar-widget h3 {
            font-family: var(--font-heading);
            color: var(--secondary);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary);
        }
        .widget-list {
            list-style: none;
        }
        .widget-list li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dotted #ddd;
        }
        .widget-list li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        .widget-list a {
            display: flex;
            align-items: center;
            color: var(--dark);
        }
        .widget-list a:hover {
            color: var(--primary);
        }
        .widget-list i {
            margin-right: 10px;
            color: var(--primary);
        }
        .interaction-section {
            margin-top: 50px;
            background-color: #f5f5f5;
            padding: 30px;
            border-radius: 10px;
        }
        .interaction-section h2 {
            color: var(--secondary);
            margin-bottom: 25px;
        }
        .rating-widget {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 30px;
            flex-wrap: wrap;
        }
        .stars {
            display: flex;
            direction: ltr;
        }
        .star {
            font-size: 2rem;
            color: var(--gray-light);
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: var(--accent);
        }
        .star:hover ~ .star {
            color: var(--gray-light);
        }
        .rating-form,
        .comment-form {
            margin-bottom: 40px;
        }
        .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 #ccc;
            border-radius: 4px;
            font-family: var(--font-body);
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 2px rgba(198, 40, 40, 0.2);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .btn {
            display: inline-block;
            background-color: var(--primary);
            color: white;
            padding: 14px 30px;
            border: none;
            border-radius: 4px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
        }
        .btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        @media (max-width: 768px) {
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        .footer-logo {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 20px;
            color: var(--light);
        }
        .footer-links h4,
        .footer-contact h4 {
            color: var(--accent);
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #ccc;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
            transition: all 0.3s;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 20px;
            border-radius: 6px;
            margin-top: 20px;
            border-left: 4px solid var(--primary);
        }
        friend-link a {
            color: var(--accent);
            font-weight: bold;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .header-top {
                flex-direction: column;
                gap: 15px;
            }
            .nav-container {
                flex-direction: column;
                align-items: stretch;
            }
            .nav-links {
                flex-direction: column;
                display: none;
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links li {
                text-align: center;
                border-bottom: 1px solid #333;
            }
            .nav-search {
                margin-top: 15px;
                justify-content: center;
            }
            .nav-search input {
                width: 100%;
            }
            .mobile-toggle {
                display: block;
                position: absolute;
                top: 20px;
                right: 20px;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
        }