:root {
            --primary-color: #FF6B6B;
            --secondary-color: #4ECDC4;
            --accent-color: #FFD166;
            --dark-color: #2D3047;
            --light-color: #F7FFF7;
            --text-color: #333;
            --text-light: #666;
            --border-radius: 12px;
            --shadow: 0 5px 15px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
            --container-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--text-color);
            background-color: #fff;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul { list-style: none; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            padding: 14px 32px;
            background: linear-gradient(135deg, var(--primary-color), #ff8e8e);
            color: white;
            border: none;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            box-shadow: var(--shadow);
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(255, 107, 107, 0.3);
        }
        .section-padding { padding: 80px 0; }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mb-3 { margin-bottom: 3rem; }
        .mt-2 { margin-top: 2rem; }
        .highlight {
            background-color: var(--accent-color);
            padding: 2px 6px;
            border-radius: 4px;
            font-weight: bold;
        }
        .site-header {
            background-color: white;
            box-shadow: 0 2px 20px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .logo span { color: var(--primary-color); }
        .main-nav ul {
            display: flex;
            gap: 30px;
        }
        .main-nav a {
            font-weight: 600;
            color: var(--dark-color);
            padding: 8px 0;
            position: relative;
        }
        .main-nav a:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--secondary-color);
            transition: width 0.3s ease;
        }
        .main-nav a:hover { color: var(--primary-color); }
        .main-nav a:hover:after { width: 100%; }
        .search-box {
            display: flex;
            border: 2px solid #eee;
            border-radius: 50px;
            overflow: hidden;
            width: 300px;
        }
        .search-box input {
            flex: 1;
            border: none;
            padding: 12px 20px;
            outline: none;
        }
        .search-box button {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 0 25px;
            cursor: pointer;
        }
        .search-box button:hover { background-color: #3db9b0; }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--dark-color);
        }
        .breadcrumb {
            background-color: #f9f9f9;
            padding: 15px 0;
            font-size: 0.9rem;
            color: var(--text-light);
            border-top: 1px solid #eee;
        }
        .breadcrumb a:hover { color: var(--primary-color); }
        .breadcrumb i { margin: 0 10px; }
        .hero {
            background: linear-gradient(rgba(45, 48, 71, 0.85), rgba(45, 48, 71, 0.9)), url('https://images.unsplash.com/photo-1556909114-f6e7ad7d3136?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            color: white;
            padding: 100px 0;
            text-align: center;
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 30px;
            opacity: 0.9;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        .article-content {
            background: white;
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--shadow);
        }
        .article-content h2, .article-content h3 {
            color: var(--dark-color);
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--accent-color);
        }
        .article-content h2 { font-size: 2rem; }
        .article-content h3 { font-size: 1.6rem; }
        .article-content p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .article-content ul, .article-content ol {
            margin-bottom: 1.5rem;
            padding-left: 2rem;
        }
        .article-content li { margin-bottom: 0.8rem; }
        .feature-img {
            border-radius: var(--border-radius);
            overflow: hidden;
            margin: 2rem 0;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        .feature-img img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .feature-img:hover img { transform: scale(1.03); }
        .info-box {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            border-left: 5px solid var(--secondary-color);
            padding: 25px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            margin: 2rem 0;
        }
        .rating-widget, .comment-form {
            background-color: #f8f9fa;
            border-radius: var(--border-radius);
            padding: 30px;
            margin-top: 3rem;
            border: 1px solid #eaeaea;
        }
        .rating-stars {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin: 20px 0;
        }
        .rating-stars i {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars i:hover, .rating-stars i.active { color: #FFD700; }
        .form-group { margin-bottom: 20px; }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 15px;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-family: inherit;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 3px rgba(78, 205, 196, 0.2);
        }
        .sidebar {
            position: sticky;
            top: 120px;
            height: fit-content;
        }
        .sidebar-widget {
            background: white;
            border-radius: var(--border-radius);
            padding: 25px;
            margin-bottom: 30px;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--dark-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #eee;
        }
        .quick-links li { margin-bottom: 12px; }
        .quick-links a {
            display: flex;
            align-items: center;
            padding: 10px 15px;
            background-color: #f8f9fa;
            border-radius: 8px;
            transition: var(--transition);
        }
        .quick-links a:hover {
            background-color: var(--secondary-color);
            color: white;
            transform: translateX(5px);
        }
        .quick-links i { margin-right: 10px; }
        .longtail-links {
            background-color: var(--dark-color);
            color: white;
            padding: 60px 0 40px;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
        }
        .web-link {
            background-color: rgba(255,255,255,0.05);
            padding: 20px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: rgba(255,255,255,0.1);
            transform: translateY(-5px);
        }
        .web-link a { color: var(--accent-color); }
        .web-link a:hover { text-decoration: underline; }
        .site-footer {
            background-color: #1a1c2e;
            color: #aaa;
            padding: 40px 0 20px;
            text-align: center;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 25px;
            margin-bottom: 30px;
        }
        .footer-links a { color: #ccc; }
        .footer-links a:hover { color: white; }
        .copyright { font-size: 0.9rem; padding-top: 20px; border-top: 1px solid #333; }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
            .sidebar { position: static; }
            .hero h1 { font-size: 2.8rem; }
        }
        @media (max-width: 768px) {
            .main-nav { display: none; }
            .hamburger { display: block; }
            .search-box { width: 250px; }
            .header-top { flex-wrap: wrap; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1rem; }
            .article-content { padding: 25px; }
            .section-padding { padding: 50px 0; }
            .footer-links { flex-direction: column; gap: 15px; }
        }
        @media (max-width: 576px) {
            .search-box { width: 100%; margin-top: 15px; order: 3; }
            .header-top { flex-direction: column; align-items: flex-start; }
            .logo { margin-bottom: 15px; }
            .hero { padding: 60px 0; }
            .btn { padding: 12px 24px; }
        }
        @media print {
            .site-header, .sidebar, .rating-widget, .comment-form, .longtail-links, .site-footer { display: none; }
            .main-content { grid-template-columns: 1fr; }
            .article-content { box-shadow: none; padding: 0; }
        }