* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --secondary: #10b981;
            --accent: #f59e0b;
            --dark: #1f2937;
            --light: #f9fafb;
            --gray: #6b7280;
            --gray-light: #e5e7eb;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
            border-bottom: 1px solid var(--gray-light);
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--accent);
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .search-form {
            display: flex;
            flex-grow: 1;
            max-width: 500px;
            margin: 0 30px;
        }
        .search-form input {
            flex-grow: 1;
            padding: 12px 20px;
            border: 2px solid var(--gray-light);
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: var(--primary-dark);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--dark);
            cursor: pointer;
        }
        nav {
            padding: 15px 0;
        }
        .nav-list {
            display: flex;
            list-style: none;
            justify-content: center;
            gap: 30px;
            flex-wrap: wrap;
        }
        .nav-list a {
            color: var(--dark);
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a:hover {
            background-color: var(--gray-light);
            text-decoration: none;
            color: var(--primary);
        }
        .nav-list a.active {
            background-color: var(--primary);
            color: white;
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #f1f5f9;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 10px;
            color: var(--gray);
        }
        main {
            flex-grow: 1;
            padding: 40px 0;
        }
        .article-header {
            text-align: center;
            margin-bottom: 50px;
            padding-bottom: 30px;
            border-bottom: 3px solid var(--gray-light);
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: var(--dark);
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 20px;
            color: var(--gray);
            font-size: 0.95rem;
            flex-wrap: wrap;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .content-area {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            .content-area {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background-color: white;
            padding: 40px;
            border-radius: 12px;
            box-shadow: var(--shadow);
        }
        .article-content h2 {
            color: var(--primary-dark);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--gray-light);
            font-size: 2rem;
        }
        .article-content h3 {
            color: var(--dark);
            margin: 30px 0 15px;
            font-size: 1.6rem;
        }
        .article-content h4 {
            color: var(--gray);
            margin: 25px 0 12px;
            font-size: 1.3rem;
        }
        .article-content p {
            margin-bottom: 20px;
            text-align: justify;
            font-size: 1.1rem;
        }
        .article-content strong {
            color: var(--primary-dark);
            font-weight: 700;
        }
        .article-content em {
            color: var(--secondary);
            font-style: italic;
        }
        .highlight-box {
            background-color: #eff6ff;
            border-left: 5px solid var(--primary);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
        }
        .image-wrapper {
            margin: 40px auto;
            text-align: center;
            max-width: 800px;
        }
        .image-wrapper img {
            border-radius: 12px;
            box-shadow: var(--shadow);
            margin-bottom: 15px;
        }
        .image-caption {
            font-style: italic;
            color: var(--gray);
            font-size: 0.95rem;
        }
        .link-list {
            background-color: #f8fafc;
            padding: 25px;
            border-radius: 10px;
            margin: 30px 0;
        }
        .link-list h4 {
            margin-top: 0;
        }
        .link-list ul {
            list-style-position: inside;
            column-count: 2;
        }
        .link-list li {
            margin-bottom: 10px;
        }
        @media (max-width: 768px) {
            .link-list ul {
                column-count: 1;
            }
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background-color: white;
            padding: 25px;
            border-radius: 12px;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--primary-dark);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--gray-light);
            font-size: 1.4rem;
        }
        .rating-form label,
        .comment-form label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .rating-form input,
        .rating-form select,
        .comment-form input,
        .comment-form textarea {
            width: 100%;
            padding: 12px 15px;
            margin-bottom: 20px;
            border: 1px solid var(--gray-light);
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .rating-form input:focus,
        .rating-form select:focus,
        .comment-form input:focus,
        .comment-form textarea:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }
        .stars {
            display: flex;
            gap: 5px;
            margin-bottom: 20px;
            justify-content: center;
        }
        .star {
            font-size: 2rem;
            color: var(--gray-light);
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--accent);
        }
        .btn {
            display: inline-block;
            background-color: var(--primary);
            color: white;
            padding: 14px 30px;
            border: none;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            width: 100%;
        }
        .btn:hover {
            background-color: var(--primary-dark);
            text-decoration: none;
            transform: translateY(-3px);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }
        .btn-secondary {
            background-color: var(--secondary);
        }
        .btn-secondary:hover {
            background-color: #0da271;
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 900;
            color: white;
            margin-bottom: 20px;
            display: block;
        }
        .footer-links 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: #d1d5db;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: #374151;
            padding: 15px;
            border-radius: 8px;
            margin: 10px 0;
            text-align: center;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #4b5563;
            color: #9ca3af;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .search-form {
                order: 3;
                margin: 20px 0 0;
                max-width: 100%;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                gap: 0;
                width: 100%;
                padding-top: 20px;
            }
            .nav-list.active {
                display: flex;
            }
            .nav-list li {
                width: 100%;
            }
            .nav-list a {
                padding: 15px;
                border-radius: 0;
                border-bottom: 1px solid var(--gray-light);
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            .article-content {
                padding: 25px;
            }
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .special-badge {
            display: inline-block;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: white;
            padding: 5px 15px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: bold;
            margin: 0 10px 10px 0;
        }