* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #1a73e8;
            --secondary: #34a853;
            --accent: #ea4335;
            --dark: #202124;
            --light: #f8f9fa;
            --gray: #5f6368;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f5f7fa;
            color: var(--dark);
            line-height: 1.6;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        section {
            padding: 60px 0;
        }
        .section-title {
            font-size: 2.2rem;
            margin-bottom: 2rem;
            color: var(--dark);
            position: relative;
            padding-bottom: 10px;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background: linear-gradient(to right, var(--primary), var(--secondary));
            border-radius: 2px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background: linear-gradient(135deg, var(--primary), #0d5bb5);
            color: white;
            border-radius: 30px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
            color: white;
            background: linear-gradient(135deg, #0d5bb5, var(--primary));
        }
        header {
            background-color: white;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--dark);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo a i {
            color: var(--primary);
        }
        .logo a:hover {
            color: var(--primary);
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .nav-links a {
            font-weight: 600;
            color: var(--gray);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a:after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            background: var(--primary);
            left: 0;
            bottom: -5px;
            transition: width 0.3s;
        }
        .nav-links a:hover:after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
        }
        .search-box {
            margin-left: 30px;
            display: flex;
        }
        .search-box input {
            padding: 10px 15px;
            border: 1px solid #ddd;
            border-radius: 20px 0 0 20px;
            width: 220px;
            outline: none;
        }
        .search-box button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 0 20px 20px 0;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #f1f3f4;
            padding: 12px 20px;
            font-size: 0.9rem;
            border-bottom: 1px solid #e0e0e0;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--gray);
            margin: 0 8px;
        }
        .hero {
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://images.unsplash.com/photo-1556056504-5c7696c4c28d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1600&q=80') center/cover no-repeat;
            color: white;
            text-align: center;
            padding: 100px 20px;
        }
        .hero h1 {
            font-size: 3rem;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 30px;
            opacity: 0.9;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        article {
            background: white;
            border-radius: 10px;
            padding: 40px;
            box-shadow: var(--shadow);
        }
        article h2 {
            font-size: 1.8rem;
            margin: 30px 0 15px;
            color: var(--dark);
        }
        article h2:first-of-type {
            margin-top: 0;
        }
        article h3 {
            font-size: 1.4rem;
            margin: 25px 0 10px;
            color: var(--dark);
        }
        article p {
            margin-bottom: 20px;
            font-size: 1.05rem;
            color: #444;
        }
        article b {
            color: var(--dark);
        }
        .highlight-box {
            background: linear-gradient(135deg, #e3f2fd, #f3e5f5);
            border-left: 5px solid var(--primary);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
        }
        .image-container {
            margin: 30px 0;
            text-align: center;
        }
        .image-container img {
            border-radius: 10px;
            box-shadow: var(--shadow);
            margin: 0 auto;
            border: 1px solid #eee;
        }
        .image-caption {
            margin-top: 10px;
            font-style: italic;
            color: var(--gray);
            font-size: 0.95rem;
        }
        .features-list {
            list-style: none;
            margin: 20px 0;
        }
        .features-list li {
            padding: 10px 0 10px 35px;
            position: relative;
        }
        .features-list li:before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 10px;
            background: var(--secondary);
            color: white;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            text-align: center;
            line-height: 22px;
            font-size: 0.8rem;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: white;
            border-radius: 10px;
            padding: 25px;
            box-shadow: var(--shadow);
        }
        .sidebar-title {
            font-size: 1.3rem;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #eee;
            color: var(--dark);
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            font-size: 1.8rem;
            color: #ffc107;
            cursor: pointer;
            margin-bottom: 10px;
        }
        .rating-stars i:hover {
            transform: scale(1.1);
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .form-group label {
            font-weight: 600;
            color: var(--dark);
        }
        .form-group input, .form-group textarea, .form-group select {
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .form-group input:focus, .form-group textarea:focus, .form-group select:focus {
            border-color: var(--primary);
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed #eee;
        }
        .related-links li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        .related-links a {
            display: block;
            padding: 8px 0;
            color: var(--gray);
        }
        .related-links a:hover {
            color: var(--primary);
            padding-left: 5px;
        }
        .long-tail-links {
            background: var(--dark);
            padding: 40px 20px;
            color: white;
        }
        .long-tail-links .container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
        }
        .web-link {
            background: rgba(255,255,255,0.05);
            padding: 15px;
            border-radius: 5px;
            transition: var(--transition);
        }
        .web-link:hover {
            background: rgba(255,255,255,0.1);
            transform: translateY(-3px);
        }
        .web-link a {
            color: #ddd;
            display: block;
            font-weight: 500;
        }
        .web-link a:hover {
            color: white;
        }
        footer {
            background: #171717;
            color: #aaa;
            padding: 40px 20px;
            text-align: center;
        }
        .footer-content {
            max-width: 800px;
            margin: 0 auto;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 25px;
            margin-bottom: 25px;
        }
        .footer-links a {
            color: #bbb;
        }
        .footer-links a:hover {
            color: white;
        }
        .copyright {
            font-size: 0.9rem;
            border-top: 1px solid #333;
            padding-top: 20px;
            margin-top: 20px;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 2.5rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links, .search-box {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .mobile-menu {
                display: flex;
                flex-direction: column;
                background: white;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
                padding: 20px;
                z-index: 999;
                transform: translateY(-10px);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
            }
            .mobile-menu.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .mobile-menu a {
                padding: 15px 0;
                border-bottom: 1px solid #eee;
                font-weight: 600;
                color: var(--dark);
            }
            .mobile-menu a:last-child {
                border-bottom: none;
            }
            .mobile-search {
                margin-top: 15px;
                display: flex;
            }
            .mobile-search input {
                flex: 1;
                padding: 12px;
                border: 1px solid #ddd;
                border-radius: 20px 0 0 20px;
            }
            .mobile-search button {
                background: var(--primary);
                color: white;
                border: none;
                padding: 0 20px;
                border-radius: 0 20px 20px 0;
            }
            .hero {
                padding: 80px 20px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            article {
                padding: 25px;
            }
            .long-tail-links .container {
                grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 1.8rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .btn {
                padding: 10px 20px;
            }
        }