:root {
            --primary: #5C6BC0;
            --secondary: #FF9800;
            --accent: #4CAF50;
            --light: #F5F7FA;
            --dark: #2C3E50;
            --text: #333;
            --gray: #95a5a6;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --radius: 8px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background-color: #fff;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--secondary);
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary), #7986CB);
            color: white;
            padding: 1.5rem 0;
            border-bottom: 4px solid var(--secondary);
            margin-bottom: 2rem;
            border-radius: 0 0 var(--radius) var(--radius);
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.5rem;
            font-weight: 800;
            color: white;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--secondary);
        }
        .my-logo:hover {
            color: #FFEB3B;
        }
        .nav-container {
            display: flex;
            align-items: center;
        }
        .main-nav {
            display: flex;
            gap: 1.8rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: var(--radius);
        }
        .main-nav a:hover,
        .main-nav a.active {
            background-color: rgba(255, 255, 255, 0.2);
            color: #FFEB3B;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--light);
            padding: 0.8rem 1.5rem;
            border-radius: var(--radius);
            margin: 1.5rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--dark);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--gray);
        }
        .search-section {
            background-color: var(--light);
            padding: 2rem;
            border-radius: var(--radius);
            margin: 2rem 0;
            text-align: center;
            box-shadow: var(--shadow);
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid var(--primary);
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
            outline: none;
        }
        .search-btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background-color 0.3s;
        }
        .search-btn:hover {
            background-color: #3F51B5;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0;
        }
        article {
            background-color: white;
            padding: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed var(--secondary);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--dark);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--secondary);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: var(--dark);
            font-weight: 600;
            background-color: #E8F5E9;
            padding: 1.5rem;
            border-left: 5px solid var(--accent);
            border-radius: var(--radius);
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #FFF3E0;
            padding: 1.5rem;
            border-radius: var(--radius);
            border-left: 5px solid var(--secondary);
            margin: 1.5rem 0;
        }
        .feature-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--radius);
            margin: 2rem auto;
            display: block;
            box-shadow: 0 6px 15px rgba(0,0,0,0.1);
            border: 5px solid white;
        }
        .link-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .link-item {
            background: var(--light);
            padding: 1rem;
            border-radius: var(--radius);
            text-align: center;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .link-item:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        aside {
            background-color: white;
            padding: 1.8rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            align-self: start;
        }
        .widget {
            margin-bottom: 2.5rem;
        }
        .widget-title {
            font-size: 1.3rem;
            color: var(--primary);
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #eee;
        }
        .comment-form,
        .rating-form {
            background-color: var(--light);
            padding: 1.8rem;
            border-radius: var(--radius);
            margin: 2rem 0;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }
        input,
        textarea,
        select {
            width: 100%;
            padding: 0.9rem;
            border: 1px solid #ccc;
            border-radius: var(--radius);
            font-family: inherit;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        input:focus,
        textarea:focus,
        select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(92, 107, 192, 0.2);
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: var(--gray);
            cursor: pointer;
        }
        .stars:hover .star {
            color: #FFC107;
        }
        .star:hover,
        .star:hover ~ .star {
            color: #FFC107 !important;
        }
        .star.active {
            color: #FFC107;
        }
        .submit-btn {
            background-color: var(--accent);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: var(--radius);
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        .submit-btn:hover {
            background-color: #388E3C;
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            border-radius: var(--radius) var(--radius) 0 0;
            margin-top: 4rem;
            box-shadow: var(--shadow);
        }
        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
        }
        .footer-col {
            flex: 1;
            min-width: 250px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            margin-bottom: 1rem;
        }
        .footer-links a {
            color: #ddd;
            display: block;
            margin-bottom: 0.8rem;
        }
        .footer-links a:hover {
            color: var(--secondary);
            padding-left: 5px;
        }
        friend-link {
            display: inline-block;
            background-color: rgba(255, 255, 255, 0.1);
            padding: 0.5rem 1rem;
            border-radius: 20px;
            margin: 0.3rem;
            font-size: 0.9rem;
        }
        friend-link a {
            color: #FFEB3B;
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            .nav-container {
                width: 100%;
                margin-top: 1rem;
                justify-content: space-between;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: rgba(0, 0, 0, 0.9);
                position: absolute;
                top: 100%;
                left: 0;
                z-index: 100;
                padding: 1rem;
                border-radius: 0 0 var(--radius) var(--radius);
            }
            .main-nav.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input,
            .search-btn {
                border-radius: var(--radius);
                margin-bottom: 0.5rem;
            }
        }