:root {
            --primary-color: #4a148c;
            --secondary-color: #ff6f00;
            --accent-color: #00bcd4;
            --text-color: #333;
            --light-bg: #f9f9f9;
            --dark-bg: #222;
            --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: var(--font-family);
            color: var(--text-color);
            line-height: 1.7;
            background-color: var(--light-bg);
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary-color), var(--dark-bg));
            color: white;
            padding: 20px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 2.5rem;
            font-weight: bold;
            color: var(--secondary-color);
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            transition: transform 0.3s ease;
        }
        .logo:hover {
            transform: scale(1.05);
        }
        .nav-desktop {
            display: flex;
            gap: 30px;
        }
        .nav-desktop a {
            font-size: 1.2rem;
            padding: 10px 15px;
            border-radius: 5px;
            transition: background 0.3s ease, color 0.3s ease;
        }
        .nav-desktop a:hover {
            background: var(--secondary-color);
            color: white;
        }
        .hamburger {
            display: none;
            font-size: 2rem;
            cursor: pointer;
            color: var(--secondary-color);
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: var(--dark-bg);
            padding: 20px;
            border-radius: 10px;
            margin-top: 20px;
            animation: slideDown 0.5s ease;
        }
        @keyframes slideDown {
            from { opacity: 0; transform: translateY(-20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .nav-mobile a {
            padding: 15px;
            border-bottom: 1px solid #444;
            transition: background 0.3s ease;
        }
        .nav-mobile a:hover {
            background: var(--primary-color);
        }
        .breadcrumb {
            margin-top: 15px;
            font-size: 0.9rem;
            color: #ccc;
        }
        .breadcrumb a {
            color: var(--accent-color);
        }
        main {
            padding: 40px 0;
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin: 20px auto;
        }
        .article-header {
            text-align: center;
            margin-bottom: 40px;
            padding-bottom: 20px;
            border-bottom: 3px solid var(--secondary-color);
        }
        h1 {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 15px;
            line-height: 1.2;
        }
        .highlight {
            color: var(--secondary-color);
            font-weight: bold;
        }
        .article-meta {
            font-size: 1rem;
            color: #666;
            margin-top: 10px;
        }
        .article-content {
            padding: 0 30px;
        }
        section {
            margin-bottom: 50px;
        }
        h2 {
            font-size: 2.2rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px dashed var(--accent-color);
        }
        h3 {
            font-size: 1.8rem;
            color: var(--secondary-color);
            margin: 25px 0 15px;
        }
        p {
            font-size: 1.2rem;
            margin-bottom: 20px;
            text-align: justify;
            padding: 0 10px;
        }
        .emphasis {
            font-weight: bold;
            color: var(--primary-color);
            font-size: 1.3rem;
        }
        .quote {
            background: var(--light-bg);
            border-left: 5px solid var(--accent-color);
            padding: 20px;
            margin: 30px 0;
            font-style: italic;
            font-size: 1.3rem;
        }
        .image-container {
            text-align: center;
            margin: 40px 0;
        }
        .feature-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 15px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
            transition: transform 0.5s ease;
        }
        .feature-img:hover {
            transform: scale(1.02);
        }
        .interactive-section {
            background: linear-gradient(135deg, #f5f7fa, #c3cfe2);
            padding: 30px;
            border-radius: 15px;
            margin: 40px 0;
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
        }
        .interactive-section h2 {
            color: var(--dark-bg);
        }
        .form-group {
            margin-bottom: 25px;
        }
        label {
            display: block;
            margin-bottom: 10px;
            font-weight: bold;
            color: var(--primary-color);
        }
        input, textarea, select {
            width: 100%;
            padding: 15px;
            border: 2px solid #ccc;
            border-radius: 8px;
            font-size: 1.1rem;
            transition: border 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            border-color: var(--accent-color);
            outline: none;
        }
        button {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            color: white;
            border: none;
            padding: 15px 30px;
            font-size: 1.2rem;
            border-radius: 50px;
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        button:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }
        .rating {
            display: flex;
            gap: 10px;
            align-items: center;
            margin-top: 20px;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .star:hover,
        .star.active {
            color: #ffcc00;
        }
        .comments {
            margin-top: 50px;
        }
        .comment {
            background: #f1f1f1;
            padding: 20px;
            border-radius: 10px;
            margin-bottom: 20px;
        }
        .comment-author {
            font-weight: bold;
            color: var(--primary-color);
        }
        .long-tail-links {
            background: var(--dark-bg);
            color: white;
            padding: 40px 0;
            margin-top: 50px;
        }
        .web-links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
        }
        .web-link {
            background: rgba(255,255,255,0.1);
            padding: 20px;
            border-radius: 10px;
            transition: background 0.3s ease, transform 0.3s ease;
        }
        .web-link:hover {
            background: rgba(255,111,0,0.3);
            transform: translateY(-5px);
        }
        .web-link a {
            color: var(--accent-color);
            font-size: 1.1rem;
        }
        footer {
            background: #111;
            color: #aaa;
            text-align: center;
            padding: 30px 0;
            font-size: 0.9rem;
        }
        footer a {
            color: var(--secondary-color);
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .nav-mobile.active {
                display: flex;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            p {
                font-size: 1.1rem;
            }
            .article-content {
                padding: 0 15px;
            }
            .web-links-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .container {
                padding: 0 30px;
            }
            .web-links-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }