* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            max-width: 1280px;
            margin: 0 auto;
            box-shadow: 0 0 30px rgba(0,0,0,0.05);
        }
        h1, h2, h3, h4 { color: #2c3e50; margin-bottom: 1rem; font-weight: 700; }
        h1 { font-size: 2.8rem; line-height: 1.2; border-bottom: 4px solid #3498db; padding-bottom: 0.5rem; margin-top: 1.5rem; }
        h2 { font-size: 2.2rem; color: #2980b9; padding-top: 1rem; border-top: 2px dashed #bdc3c7; }
        h3 { font-size: 1.8rem; color: #16a085; }
        h4 { font-size: 1.4rem; color: #8e44ad; }
        p { margin-bottom: 1.5rem; text-align: justify; }
        a { color: #3498db; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #e74c3c; text-decoration: underline; }
        strong { color: #e74c3c; font-weight: 700; }
        em { color: #f39c12; }
        .highlight { background-color: #fffacd; padding: 0.2rem 0.5rem; border-radius: 3px; }
        .last-updated { font-style: italic; color: #7f8c8d; background: #ecf0f1; padding: 0.5rem; border-radius: 5px; margin: 2rem 0; }
        .container { padding: 0 2rem; }
        @media (min-width: 768px) {
            .main-grid {
                display: grid;
                grid-template-columns: 3fr 1fr;
                gap: 2.5rem;
            }
        }
        header { background: linear-gradient(90deg, #1a2980, #26d0ce); color: white; padding: 1.5rem 0; }
        .header-container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; }
        .my-logo { font-size: 2.5rem; font-weight: 900; color: white; text-decoration: none; display: flex; align-items: center; }
        .my-logo i { margin-right: 15px; color: #ffcc00; }
        .my-logo:hover { color: #ffcc00; }
        nav { background-color: #2c3e50; }
        .nav-desktop { display: flex; list-style: none; }
        .nav-desktop li { flex: 1; text-align: center; }
        .nav-desktop a { color: #ecf0f1; padding: 1rem 1.5rem; display: block; font-weight: 600; }
        .nav-desktop a:hover { background-color: #3498db; color: white; }
        .hamburger { display: none; font-size: 1.8rem; background: none; border: none; color: white; cursor: pointer; padding: 0.5rem 1rem; }
        @media (max-width: 767px) {
            .hamburger { display: block; }
            .nav-desktop { flex-direction: column; display: none; }
            .nav-desktop.active { display: flex; }
            .nav-desktop li { text-align: left; }
        }
        .breadcrumb { padding: 1rem 2rem; background-color: #ecf0f1; font-size: 0.9rem; }
        .breadcrumb a { color: #7f8c8d; }
        .breadcrumb a:hover { color: #3498db; }
        main { padding: 2rem 0; }
        article { background: white; padding: 2.5rem; border-radius: 15px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); }
        .featured-img { width: 100%; height: auto; border-radius: 10px; margin: 2rem 0; border: 5px solid #3498db; }
        .interactive-section { background: #f8f9fa; padding: 2rem; border-radius: 10px; margin: 2.5rem 0; border-left: 5px solid #2ecc71; }
        aside { background: white; padding: 2rem; border-radius: 15px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
        .sidebar-widget { margin-bottom: 2.5rem; }
        .sidebar-widget h3 { font-size: 1.4rem; margin-bottom: 1rem; color: #2c3e50; border-bottom: 2px solid #3498db; padding-bottom: 0.5rem; }
        .form-group { margin-bottom: 1.5rem; }
        label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: #2c3e50; }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 2px solid #bdc3c7;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus { outline: none; border-color: #3498db; }
        button, .btn {
            background: linear-gradient(90deg, #3498db, #2ecc71);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s;
            display: inline-block;
            text-align: center;
        }
        button:hover, .btn:hover { transform: translateY(-3px); box-shadow: 0 7px 14px rgba(52, 152, 219, 0.4); }
        .rating { color: #f1c40f; font-size: 1.5rem; margin: 1rem 0; }
        .rating i { cursor: pointer; transition: transform 0.2s; }
        .rating i:hover { transform: scale(1.3); }
        .comment { border-bottom: 1px solid #ecf0f1; padding: 1.5rem 0; }
        .comment:last-child { border-bottom: none; }
        .comment-author { font-weight: bold; color: #2c3e50; }
        .comment-date { color: #95a5a6; font-size: 0.9rem; }
        footer { background: #2c3e50; color: #ecf0f1; padding: 3rem 0 1.5rem; margin-top: 3rem; }
        .footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; margin-bottom: 2rem; }
        friend-links { display: block; background: #34495e; padding: 1.5rem; border-radius: 10px; }
        friend-links a { color: #1abc9c; display: block; margin: 0.5rem 0; }
        .copyright { text-align: center; padding-top: 1.5rem; border-top: 1px solid #4a6278; font-size: 0.9rem; color: #bdc3c7; }