:root {
            --primary: #4a6fa5;
            --secondary: #ff6b6b;
            --accent: #51cf66;
            --dark: #2d3436;
            --light: #f8f9fa;
            --gray: #adb5bd;
            --transition: all 0.3s ease;
            --shadow: 0 5px 15px rgba(0,0,0,0.1);
            --radius: 8px;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
            padding-top: 80px;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: var(--radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background: var(--secondary);
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .section {
            padding: 60px 0;
        }
        .hidden {
            display: none !important;
        }
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            box-shadow: var(--shadow);
            z-index: 1000;
            backdrop-filter: blur(10px);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--secondary);
        }
        .logo span {
            color: var(--accent);
        }
        .desktop-nav {
            display: flex;
            gap: 30px;
        }
        .desktop-nav a {
            font-weight: 600;
            position: relative;
            padding: 5px 0;
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--accent);
            transition: var(--transition);
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
        }
        .mobile-nav {
            position: fixed;
            top: 80px;
            left: 0;
            width: 100%;
            background: white;
            flex-direction: column;
            padding: 20px;
            box-shadow: var(--shadow);
            transform: translateY(-100%);
            opacity: 0;
            transition: var(--transition);
        }
        .mobile-nav.active {
            transform: translateY(0);
            opacity: 1;
        }
        .mobile-nav a {
            padding: 15px;
            border-bottom: 1px solid #eee;
            font-weight: 600;
        }
        .mobile-nav a:hover {
            color: var(--primary);
            background: #f8f9fa;
        }
        .breadcrumb {
            padding: 15px 0;
            background: #e9ecef;
            margin-bottom: 30px;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 10px;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 10px;
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .hero {
            text-align: center;
            padding: 40px 0;
            background: linear-gradient(rgba(255,255,255,0.9), rgba(255,255,255,0.7)), url('https://images.unsplash.com/photo-1511512578047-dfb367046420?ixlib=rb-4.0.3&auto=format&fit=crop&w=1350&q=80');
            background-size: cover;
            background-position: center;
            border-radius: var(--radius);
            margin-bottom: 40px;
        }
        .hero h1 {
            font-size: 2.8rem;
            margin-bottom: 20px;
            color: var(--dark);
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.2rem;
            color: #555;
            max-width: 800px;
            margin: 0 auto 30px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .main-content h2 {
            font-size: 2rem;
            margin: 30px 0 20px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--accent);
            color: var(--primary);
        }
        .main-content h3 {
            font-size: 1.5rem;
            margin: 25px 0 15px;
            color: var(--secondary);
        }
        .main-content p {
            margin-bottom: 1.5em;
            font-size: 1.1rem;
            text-align: justify;
        }
        .main-content ul, .main-content ol {
            margin-left: 25px;
            margin-bottom: 1.5em;
        }
        .main-content li {
            margin-bottom: 10px;
        }
        .highlight {
            background: #fff9db;
            padding: 25px;
            border-left: 5px solid #ffd43b;
            margin: 25px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .feature-img {
            margin: 30px 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .feature-img figcaption {
            padding: 10px;
            background: #f8f9fa;
            font-style: italic;
            text-align: center;
            color: #666;
        }
        .emoji {
            font-size: 1.3em;
            margin-right: 5px;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin-bottom: 30px;
        }
        .sidebar-widget h3 {
            margin-bottom: 20px;
            color: var(--primary);
            font-size: 1.3rem;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 12px;
            border: 2px solid #ddd;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
        }
        .rating-widget .stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin-bottom: 15px;
        }
        .rating-widget .stars i {
            font-size: 1.8rem;
            color: #ffd43b;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-widget .stars i:hover {
            transform: scale(1.2);
        }
        .comment-form textarea {
            width: 100%;
            padding: 15px;
            border: 2px solid #ddd;
            border-radius: var(--radius);
            font-family: inherit;
            margin-bottom: 15px;
            resize: vertical;
            min-height: 120px;
        }
        .longtail-links {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
            margin: 50px 0;
        }
        @media (max-width: 768px) {
            .longtail-links {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        .web-link {
            background: white;
            padding: 15px;
            border-radius: var(--radius);
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
            transition: var(--transition);
            text-align: center;
            font-weight: 600;
        }
        .web-link:hover {
            background: var(--primary);
            color: white;
            transform: translateY(-5px);
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
        }
        @media (max-width: 768px) {
            .footer-container {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        .footer-col h4 {
            font-size: 1.2rem;
            margin-bottom: 25px;
            color: var(--accent);
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 12px;
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            margin-top: 30px;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: var(--gray);
        }
        @media (max-width: 768px) {
            body {
                padding-top: 70px;
            }
            .header-container {
                padding: 12px 15px;
            }
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .section {
                padding: 40px 0;
            }
        }