:root {
            --primary: #0d47a1;
            --secondary: #dc143c;
            --accent: #ffd700;
            --dark: #1a1a2e;
            --light: #f8f9fa;
            --gray: #6c757d;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --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: 1.8;
            color: #333;
            background-color: #fff;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--dark), var(--primary));
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo a {
            color: white;
            text-decoration: none;
            font-size: 2rem;
            font-weight: 800;
            display: flex;
            align-items: center;
        }
        .logo span {
            color: var(--accent);
        }
        .logo i {
            margin-right: 10px;
        }
        .search-form {
            flex-grow: 1;
            max-width: 400px;
            margin: 0 20px;
        }
        .search-box {
            display: flex;
        }
        .search-box input {
            flex-grow: 1;
            padding: 12px 15px;
            border: none;
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-box button {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background-color: #b01030;
        }
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        nav {
            background-color: rgba(0, 0, 0, 0.2);
            margin-top: 1rem;
            border-radius: 4px;
        }
        .nav-list {
            display: flex;
            justify-content: center;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-list li {
            position: relative;
        }
        .nav-list a {
            color: white;
            text-decoration: none;
            padding: 15px 20px;
            display: block;
            font-weight: 600;
            transition: var(--transition);
            border-bottom: 3px solid transparent;
        }
        .nav-list a:hover,
        .nav-list a.active {
            background-color: rgba(255, 255, 255, 0.1);
            border-bottom-color: var(--accent);
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: var(--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(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 30px 0;
        }
        .article-content {
            background: white;
            padding: 30px;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        sidebar {
            background: white;
            padding: 25px;
            border-radius: 8px;
            box-shadow: var(--shadow);
            align-self: start;
        }
        .widget {
            margin-bottom: 30px;
        }
        .widget h3 {
            color: var(--primary);
            border-bottom: 2px solid var(--accent);
            padding-bottom: 10px;
            margin-bottom: 15px;
            font-size: 1.3rem;
        }
        .related-links ul {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 12px;
        }
        .related-links a {
            color: var(--dark);
            text-decoration: none;
            display: block;
            padding: 8px;
            border-left: 4px solid transparent;
            transition: var(--transition);
        }
        .related-links a:hover {
            border-left-color: var(--secondary);
            background-color: #f8f9fa;
            padding-left: 15px;
        }
        h1 {
            color: var(--primary);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            color: var(--dark);
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent);
        }
        h3 {
            color: var(--primary);
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: var(--secondary);
            font-size: 1.3rem;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--dark);
            background-color: #f0f8ff;
            padding: 20px;
            border-radius: 8px;
            border-left: 5px solid var(--primary);
        }
        .highlight {
            background-color: #fffacd;
            padding: 2px 5px;
            border-radius: 3px;
            font-weight: 600;
        }
        .keyword {
            color: var(--secondary);
            font-weight: 700;
        }
        .stats {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            padding: 20px;
            border-radius: 8px;
            margin: 25px 0;
            border: 1px dashed var(--primary);
        }
        .article-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 8px;
            margin: 25px auto;
            display: block;
            box-shadow: var(--shadow);
            transition: transform 0.5s ease;
        }
        .article-img:hover {
            transform: scale(1.02);
        }
        .schedule-table {
            width: 100%;
            border-collapse: collapse;
            margin: 25px 0;
            box-shadow: 0 0 10px rgba(0,0,0,0.05);
        }
        .schedule-table th,
        .schedule-table td {
            padding: 15px;
            text-align: left;
            border-bottom: 1px solid #ddd;
        }
        .schedule-table th {
            background-color: var(--primary);
            color: white;
            font-weight: 600;
        }
        .schedule-table tr:nth-child(even) {
            background-color: #f8f9fa;
        }
        .schedule-table tr:hover {
            background-color: #e3f2fd;
        }
        .btn {
            display: inline-block;
            background-color: var(--secondary);
            color: white;
            padding: 12px 25px;
            border-radius: 4px;
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn:hover {
            background-color: #b01030;
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(220, 20, 60, 0.3);
        }
        .interaction {
            margin-top: 50px;
            padding-top: 30px;
            border-top: 2px solid #eee;
        }
        .rating-box, .comment-box {
            background-color: #f8f9fa;
            padding: 25px;
            border-radius: 8px;
            margin-bottom: 30px;
        }
        .stars {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffd700;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ccc;
            border-radius: 4px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(13, 71, 161, 0.2);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 15px;
        }
        .footer-logo span {
            color: var(--accent);
        }
        .footer-links h4 {
            color: var(--accent);
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .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-color: rgba(255, 255, 255, 0.05);
            padding: 20px;
            border-radius: 8px;
            margin-top: 20px;
        }
        friend-link h4 {
            color: var(--accent);
            margin-bottom: 15px;
        }
        .friend-link-list {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }
        .friend-link-list a {
            background-color: rgba(255, 255, 255, 0.1);
            color: white;
            padding: 8px 15px;
            border-radius: 4px;
            text-decoration: none;
            transition: var(--transition);
        }
        .friend-link-list a:hover {
            background-color: var(--primary);
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            .search-form {
                order: 3;
                max-width: 100%;
                margin: 15px 0 0;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                align-items: flex-start;
            }
            .logo {
                margin-bottom: 15px;
            }
            .menu-toggle {
                display: block;
                position: absolute;
                top: 20px;
                right: 20px;
            }
            nav {
                display: none;
                width: 100%;
            }
            nav.active {
                display: block;
            }
            .nav-list {
                flex-direction: column;
            }
            .nav-list a {
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.4rem;
            }
            .article-content {
                padding: 20px;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.8s ease forwards;
        }