:root {
            --primary: #FF6B35;
            --secondary: #2A2D43;
            --accent: #00C9B7;
            --light: #F8F9FA;
            --dark: #212529;
            --gray: #6C757D;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Nirmala UI', 'Arial', sans-serif;
        }
        body {
            background-color: #f5f7fb;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        .header {
            background: linear-gradient(135deg, var(--secondary) 0%, #1a1c2b 100%);
            color: white;
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo span {
            color: white;
        }
        .logo:hover {
            transform: scale(1.02);
            transition: var(--transition);
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 992px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-link {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: 6px;
            transition: var(--transition);
        }
        .nav-link:hover {
            background-color: rgba(255, 107, 53, 0.15);
            color: var(--primary);
        }
        .nav-link.active {
            background-color: var(--primary);
            color: white;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        @media (max-width: 992px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: var(--secondary);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile .nav-link {
            padding: 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 1rem 2rem;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        @media (max-width: 992px) {
            .container {
                grid-template-columns: 1fr;
                padding: 1.5rem;
            }
        }
        .main-content {
            background-color: white;
            border-radius: 16px;
            padding: 2.5rem;
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--secondary);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.3;
        }
        h2 {
            color: var(--primary);
            font-size: 2rem;
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.75rem;
            border-bottom: 3px solid var(--accent);
        }
        h3 {
            color: var(--secondary);
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: var(--gray);
            font-size: 1.3rem;
            margin: 1.5rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.15rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--primary);
            background-color: #FFF5F2;
            padding: 1.5rem;
            border-radius: 12px;
            border-left: 5px solid var(--primary);
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #FFF9DB;
            padding: 2rem;
            border-radius: 12px;
            border: 2px dashed var(--primary);
            margin: 2rem 0;
        }
        .step-box {
            background-color: #F0F9FF;
            border-left: 5px solid var(--accent);
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 12px 12px 0;
        }
        .tip {
            background-color: #E7F7EF;
            padding: 1.5rem;
            border-radius: 12px;
            margin: 1.5rem 0;
            position: relative;
        }
        .tip:before {
            content: "💡";
            position: absolute;
            left: -15px;
            top: 20px;
            font-size: 1.8rem;
            background: white;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow);
        }
        .emoji {
            font-size: 1.4rem;
            margin-right: 8px;
        }
        b, strong {
            color: var(--primary);
        }
        .article-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 12px;
            margin: 2rem auto;
            display: block;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .article-img:hover {
            transform: scale(1.01);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: -1rem;
            margin-bottom: 2rem;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background-color: white;
            border-radius: 12px;
            padding: 1.8rem;
            box-shadow: var(--shadow);
        }
        .widget-title {
            color: var(--secondary);
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--primary);
        }
        .search-form {
            display: flex;
            margin-bottom: 1rem;
        }
        .search-input {
            flex: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid #ddd;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
        }
        .search-btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: #e55a2b;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #FFC107;
            margin: 0.5rem 0;
        }
        .star {
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover {
            transform: scale(1.2);
        }
        .form-input, .form-textarea {
            padding: 0.9rem 1.2rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            width: 100%;
        }
        .form-textarea {
            min-height: 120px;
            resize: vertical;
        }
        .form-btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 1rem 1.5rem;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .form-btn:hover {
            background-color: #e55a2b;
            transform: translateY(-3px);
        }
        .footer-links {
            background-color: var(--light);
            padding: 3rem 2rem;
            margin-top: 3rem;
        }
        .links-container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background-color: white;
            padding: 1.2rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
        }
        .web-link a {
            color: var(--secondary);
            text-decoration: none;
            font-weight: 600;
            display: block;
            padding: 0.5rem 0;
            border-bottom: 1px dashed #eee;
        }
        .web-link a:hover {
            color: var(--primary);
        }
        .footer {
            background-color: var(--secondary);
            color: white;
            padding: 2.5rem 2rem;
            text-align: center;
        }
        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
        }
        .copyright {
            margin-top: 1.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.95rem;
            color: #aaa;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .main-content {
                padding: 1.8rem;
            }
            .header-container {
                padding: 0 1rem;
            }
        }
        .download-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, #FF8E53 100%);
            color: white;
            padding: 1.2rem 2.5rem;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 700;
            font-size: 1.3rem;
            margin: 1.5rem 0;
            box-shadow: 0 6px 15px rgba(255, 107, 53, 0.3);
            transition: var(--transition);
        }
        .download-btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 25px rgba(255, 107, 53, 0.4);
        }
        .stat-box {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat {
            flex: 1;
            min-width: 200px;
            background: white;
            padding: 1.5rem;
            border-radius: 12px;
            text-align: center;
            box-shadow: var(--shadow);
            border-top: 5px solid var(--accent);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 0.5rem;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            border-radius: 12px;
            overflow: hidden;
        }
        .comparison-table th {
            background-color: var(--secondary);
            color: white;
            padding: 1.2rem;
            text-align: left;
        }
        .comparison-table td {
            padding: 1rem 1.2rem;
            border-bottom: 1px solid #eee;
        }
        .comparison-table tr:nth-child(even) {
            background-color: #f9f9f9;
        }
        .comparison-table tr:hover {
            background-color: #f0f7ff;
        }