* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #FF6B00;
            --secondary-color: #1A237E;
            --accent-color: #FFD700;
            --dark-color: #121212;
            --light-color: #F5F5F5;
            --text-color: #333333;
            --text-light: #757575;
            --success-color: #4CAF50;
            --warning-color: #FF9800;
            --border-radius: 8px;
            --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: #f9f9f9;
            overflow-x: hidden;
        }
        h1, h2, h3, h4 {
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1rem;
            color: var(--secondary-color);
        }
        h1 {
            font-size: 2.5rem;
            color: var(--primary-color);
            text-align: center;
            margin-top: 1.5rem;
        }
        h2 {
            font-size: 2rem;
            border-left: 5px solid var(--primary-color);
            padding-left: 1rem;
            margin-top: 2.5rem;
        }
        h3 {
            font-size: 1.75rem;
            color: var(--dark-color);
            margin-top: 2rem;
        }
        h4 {
            font-size: 1.4rem;
            color: var(--text-color);
            margin-top: 1.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--dark-color);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
        }
        .logo i {
            color: var(--primary-color);
            margin-right: 10px;
            font-size: 2rem;
        }
        .logo span {
            color: var(--accent-color);
        }
        .desktop-nav {
            display: flex;
            gap: 1.5rem;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
        }
        .desktop-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .desktop-nav a:hover {
            background-color: var(--primary-color);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .mobile-nav {
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background-color: var(--dark-color);
            padding: 1rem;
            display: none;
            flex-direction: column;
            gap: 1rem;
            z-index: 999;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: white;
            text-decoration: none;
            padding: 0.8rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
            border-left: 3px solid transparent;
        }
        .mobile-nav a:hover {
            background-color: rgba(255, 107, 0, 0.2);
            border-left-color: var(--primary-color);
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #f0f0f0;
            margin-bottom: 2rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            margin-right: 0.5rem;
            display: flex;
            align-items: center;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 0.5rem;
            color: var(--text-light);
        }
        .breadcrumb a {
            color: var(--secondary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
            text-decoration: underline;
        }
        main {
            padding: 2rem 0;
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            margin-bottom: 2rem;
        }
        .article-header {
            text-align: center;
            padding-bottom: 2rem;
            border-bottom: 2px solid #f0f0f0;
            margin-bottom: 3rem;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            color: var(--text-light);
            margin-top: 1rem;
            flex-wrap: wrap;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .content-section {
            padding: 0 2rem;
            margin-bottom: 3rem;
        }
        @media (max-width: 768px) {
            .content-section {
                padding: 0 1rem;
            }
        }
        .featured-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            box-shadow: var(--box-shadow);
        }
        .highlight-box {
            background-color: rgba(255, 107, 0, 0.1);
            border-left: 5px solid var(--primary-color);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .highlight-box h3 {
            color: var(--primary-color);
            margin-top: 0;
        }
        .method-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .method-card {
            background-color: #f8f9fa;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            border-top: 4px solid var(--secondary-color);
        }
        .method-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
        }
        .method-card h4 {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--secondary-color);
        }
        .method-card i {
            color: var(--primary-color);
        }
        .interactive-section {
            background-color: #f0f8ff;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
            border: 1px solid #d1e7ff;
        }
        .interactive-section h2 {
            border-left-color: var(--secondary-color);
        }
        .search-container {
            background-color: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            margin-bottom: 2rem;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
        }
        .search-input {
            flex: 1;
            padding: 0.8rem 1rem;
            border: 2px solid #e0e0e0;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--primary-color);
        }
        .search-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: #e05a00;
            transform: scale(1.05);
        }
        .rating-container {
            background-color: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            margin-bottom: 2rem;
        }
        .rating-title {
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .rating-stars {
            display: flex;
            gap: 0.3rem;
            margin-bottom: 1rem;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--accent-color);
        }
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-text {
            padding: 0.8rem;
            border: 2px solid #e0e0e0;
            border-radius: var(--border-radius);
            font-family: inherit;
            resize: vertical;
            min-height: 100px;
        }
        .rating-submit {
            align-self: flex-start;
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .rating-submit:hover {
            background-color: #0d1a6b;
        }
        .comments-container {
            background-color: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
        }
        .comments-list {
            margin-top: 2rem;
        }
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-bottom: 2rem;
        }
        .comment-input {
            padding: 0.8rem;
            border: 2px solid #e0e0e0;
            border-radius: var(--border-radius);
            font-family: inherit;
        }
        .comment-submit {
            align-self: flex-start;
            background-color: var(--success-color);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .comment-submit:hover {
            background-color: #3d8b40;
        }
        .content-formatting {
            max-width: 800px;
            margin: 0 auto;
        }
        .important-note {
            background-color: #fff8e1;
            border-left: 5px solid var(--warning-color);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .tip-box {
            background-color: #e8f5e9;
            border-left: 5px solid var(--success-color);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .internal-links {
            background-color: #f3e5f5;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
        }
        .internal-links ul {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            list-style: none;
        }
        .internal-links a {
            color: var(--secondary-color);
            text-decoration: none;
            padding: 0.5rem 1rem;
            background-color: white;
            border-radius: var(--border-radius);
            transition: var(--transition);
            display: inline-block;
        }
        .internal-links a:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-2px);
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 3rem 0 1.5rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: var(--accent-color);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary-color);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid #444;
        }
        .friend-link-title {
            color: var(--accent-color);
            margin-bottom: 1rem;
        }
        .friend-link-list {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            list-style: none;
        }
        .friend-link-list a {
            color: white;
            text-decoration: none;
            padding: 0.5rem 1rem;
            background-color: #333;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .friend-link-list a:hover {
            background-color: var(--primary-color);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .content-section {
                padding: 0 1rem;
            }
            .method-grid {
                grid-template-columns: 1fr;
            }
            .search-form {
                flex-direction: column;
            }
            .search-btn {
                padding: 0.8rem;
            }
            .interactive-section {
                padding: 1.5rem;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.6s ease-out;
        }
        .text-center {
            text-align: center;
        }
        .text-primary {
            color: var(--primary-color);
        }
        .text-bold {
            font-weight: 700;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .keyword {
            background-color: rgba(255, 215, 0, 0.2);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }