:root {
            --primary: #e10600;
            --primary-dark: #a30500;
            --secondary: #1a1a1a;
            --accent: #00a8ff;
            --light: #f5f5f5;
            --gray: #666;
            --light-gray: #eaeaea;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #fff;
            overflow-x: hidden;
        }
        .header {
            background: var(--secondary);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2rem;
            font-weight: 900;
            color: white;
            text-decoration: none;
            letter-spacing: 1px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo a:hover {
            opacity: 0.9;
        }
        .nav-desktop ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-desktop a {
            color: var(--light);
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition);
        }
        .nav-desktop a:hover,
        .nav-desktop a.active {
            color: var(--accent);
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width 0.3s ease;
        }
        .nav-desktop a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            background: var(--secondary);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 5px 10px rgba(0,0,0,0.2);
        }
        .nav-mobile.active {
            display: block;
        }
        .nav-mobile ul {
            list-style: none;
        }
        .nav-mobile li {
            margin: 1rem 0;
        }
        .nav-mobile a {
            color: white;
            text-decoration: none;
            font-size: 1.2rem;
            display: block;
            padding: 0.5rem;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .nav-mobile a:hover {
            background: rgba(255,255,255,0.1);
        }
        .breadcrumb {
            background: var(--light-gray);
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb a {
            color: var(--gray);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .search-box {
            margin: 2rem 0;
            padding: 1.5rem;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid var(--accent);
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
            outline: none;
        }
        .search-btn {
            background: var(--accent);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            transition: var(--transition);
            font-size: 1rem;
        }
        .search-btn:hover {
            background: var(--primary);
        }
        .main-article {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 3rem 0;
        }
        @media (max-width: 992px) {
            .main-article {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .article-content h1 {
            font-size: 2.5rem;
            color: var(--secondary);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        .article-content h2 {
            font-size: 1.8rem;
            color: var(--primary-dark);
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--light-gray);
        }
        .article-content h3 {
            font-size: 1.4rem;
            color: var(--secondary);
            margin: 2rem 0 1rem;
        }
        .article-content p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .article-content strong {
            color: var(--primary);
        }
        .article-content em {
            color: var(--gray);
        }
        .highlight-box {
            background: #fff9e6;
            border-left: 4px solid #ffc107;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: 0 0 10px rgba(0,0,0,0.05);
        }
        .data-table th,
        .data-table td {
            padding: 1rem;
            text-align: left;
            border-bottom: 1px solid #ddd;
        }
        .data-table th {
            background: var(--secondary);
            color: white;
        }
        .data-table tr:hover {
            background: #f9f9f9;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--radius);
            margin: 2rem auto;
            display: block;
            box-shadow: 0 6px 15px rgba(0,0,0,0.1);
            transition: transform 0.3s ease;
        }
        .article-image:hover {
            transform: scale(1.01);
        }
        .internal-link {
            color: var(--accent);
            text-decoration: none;
            font-weight: 600;
        }
        .internal-link:hover {
            text-decoration: underline;
        }
        .sidebar {
            background: white;
            padding: 2rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 {
            color: var(--primary);
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--light-gray);
        }
        .sidebar ul {
            list-style: none;
            margin-bottom: 2rem;
        }
        .sidebar li {
            margin-bottom: 0.8rem;
        }
        .sidebar a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition);
            display: block;
            padding: 0.4rem 0;
        }
        .sidebar a:hover {
            color: var(--primary);
            padding-left: 0.5rem;
        }
        .sidebar .icon {
            color: var(--accent);
            margin-right: 0.5rem;
        }
        .user-interaction {
            background: white;
            padding: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin: 3rem 0;
        }
        .interaction-tabs {
            display: flex;
            border-bottom: 2px solid var(--light-gray);
            margin-bottom: 2rem;
        }
        .tab-btn {
            padding: 0.8rem 1.5rem;
            background: none;
            border: none;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--gray);
            cursor: pointer;
            position: relative;
            transition: var(--transition);
        }
        .tab-btn.active {
            color: var(--primary);
        }
        .tab-btn.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
        }
        .tab-content {
            display: none;
        }
        .tab-content.active {
            display: block;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            direction: ltr;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        .comment-form textarea,
        .score-form select {
            width: 100%;
            padding: 1rem;
            margin: 1rem 0;
            border: 1px solid #ccc;
            border-radius: var(--radius);
            font-family: inherit;
            font-size: 1rem;
        }
        .submit-btn {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: var(--radius);
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }
        .footer-links {
            background: var(--secondary);
            padding: 3rem 0;
            margin-top: 3rem;
        }
        .web-link {
            display: inline-block;
            margin: 0.5rem 1rem;
        }
        .web-link a {
            color: var(--light);
            text-decoration: none;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            background: rgba(255,255,255,0.1);
            transition: var(--transition);
        }
        .web-link a:hover {
            background: var(--primary);
            color: white;
        }
        .footer {
            background: #111;
            color: var(--light);
            padding: 2.5rem 0;
            text-align: center;
        }
        .footer p {
            margin-bottom: 1rem;
            opacity: 0.8;
        }
        .social-icons {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            margin: 1.5rem 0;
        }
        .social-icons a {
            color: white;
            font-size: 1.5rem;
            transition: var(--transition);
        }
        .social-icons a:hover {
            color: var(--accent);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-desktop {
                display: none;
            }
            .article-content h1 {
                font-size: 2rem;
            }
            .article-content h2 {
                font-size: 1.5rem;
            }
            .article-content {
                padding: 1.5rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input {
                border-radius: var(--radius);
                margin-bottom: 0.5rem;
            }
            .search-btn {
                border-radius: var(--radius);
                padding: 0.9rem;
            }
            .interaction-tabs {
                flex-direction: column;
            }
            .tab-btn {
                text-align: left;
            }
        }