* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f9f9f9;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        img { max-width: 100%; height: auto; display: block; }
        h1 { font-size: 2.8rem; margin-bottom: 1.5rem; color: #2c3e50; border-bottom: 4px solid #3498db; padding-bottom: 0.5rem; }
        h2 { font-size: 2.2rem; margin: 2.5rem 0 1.2rem; color: #2980b9; }
        h3 { font-size: 1.7rem; margin: 2rem 0 1rem; color: #16a085; }
        h4 { font-size: 1.3rem; margin: 1.5rem 0 0.8rem; color: #8e44ad; }
        p { margin-bottom: 1.5rem; text-align: justify; }
        a { color: #3498db; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #e74c3c; }
        strong { font-weight: 700; color: #2c3e50; }
        em { font-style: italic; }
        .lead { font-size: 1.25rem; color: #555; font-weight: 300; }
        .container { width: 100%; }
        section { margin-bottom: 3rem; padding: 1.5rem; background: white; border-radius: 10px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
        .spacer { height: 2rem; }
        header { padding: 1.5rem 0; border-bottom: 2px solid #ecf0f1; margin-bottom: 2rem; }
        .logo-container { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; }
        .my-logo {
            font-size: 2.5rem;
            font-weight: 900;
            color: #3498db;
            text-transform: uppercase;
            letter-spacing: 3px;
            background: linear-gradient(90deg, #3498db, #8e44ad);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-decoration: none;
        }
        .my-logo:hover { opacity: 0.9; }
        .nav-desktop { display: flex; gap: 2rem; margin-top: 1rem; }
        .nav-desktop a { font-weight: 600; padding: 0.5rem 1rem; border-radius: 5px; }
        .nav-desktop a:hover { background: #f1f8ff; }
        .hamburger { display: none; font-size: 1.8rem; cursor: pointer; color: #3498db; }
        .nav-mobile { display: none; flex-direction: column; background: white; padding: 1rem; border-radius: 10px; box-shadow: 0 5px 15px rgba(0,0,0,0.1); margin-top: 1rem; }
        .nav-mobile.active { display: flex; }
        .nav-mobile a { padding: 0.8rem; border-bottom: 1px solid #eee; }
        .nav-mobile a:last-child { border-bottom: none; }
        .breadcrumb { margin: 1rem 0; font-size: 0.9rem; color: #7f8c8d; }
        .breadcrumb a { color: #7f8c8d; }
        .breadcrumb a:hover { color: #3498db; }
        .interactive-module {
            background: linear-gradient(135deg, #f8f9fa, #e9ecef);
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
            border-left: 5px solid #3498db;
        }
        .module-title { font-size: 1.5rem; margin-bottom: 1.5rem; color: #2c3e50; }
        .form-group { margin-bottom: 1.2rem; }
        label { display: block; margin-bottom: 0.5rem; font-weight: 600; }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #bdc3c7;
            border-radius: 5px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus { outline: none; border-color: #3498db; box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2); }
        textarea { min-height: 120px; resize: vertical; }
        button {
            background: #3498db;
            color: white;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 5px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
        }
        button:hover { background: #2980b9; transform: translateY(-2px); }
        .star-rating { display: flex; gap: 0.5rem; font-size: 1.8rem; color: #f1c40f; margin: 0.5rem 0; }
        .star-rating i { cursor: pointer; }
        .star-rating i:hover { color: #f39c12; }
        .img-container {
            float: right;
            margin: 0 0 1.5rem 1.5rem;
            max-width: 400px;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .highlight-box {
            background: #fffde7;
            border-left: 5px solid #f1c40f;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .quote {
            font-style: italic;
            font-size: 1.2rem;
            color: #7f8c8d;
            text-align: center;
            padding: 2rem;
            border-top: 2px dashed #3498db;
            border-bottom: 2px dashed #3498db;
            margin: 2.5rem 0;
        }
        .related-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 3rem 0;
        }
        .link-card {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .link-card:hover { transform: translateY(-5px); box-shadow: 0 10px 25px rgba(0,0,0,0.1); }
        .link-card h4 { margin-top: 0; }
        footer {
            margin-top: 4rem;
            padding: 3rem 0;
            background: #2c3e50;
            color: #ecf0f1;
            border-radius: 10px 10px 0 0;
            text-align: center;
        }
        friend-link {
            display: inline-block;
            margin: 0 1rem;
            color: #3498db;
            font-weight: 600;
        }
        .copyright {
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid #4a6572;
            font-size: 0.9rem;
            color: #bdc3c7;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .nav-desktop { display: none; }
            .hamburger { display: block; }
            .img-container { float: none; margin: 1.5rem auto; max-width: 100%; }
            .related-links { grid-template-columns: 1fr; }
        }