* { 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%, #e4e8f0 100%);
            min-height: 100vh;
            padding-bottom: 40px;
        }
        img { max-width: 100%; height: auto; display: block; }
        h1, h2, h3, h4 { font-family: 'Georgia', serif; color: #2c3e50; margin-bottom: 1rem; line-height: 1.3; }
        h1 { font-size: 2.8rem; border-bottom: 4px solid #e74c3c; padding-bottom: 0.5rem; margin-top: 1.5rem; }
        h2 { font-size: 2.2rem; color: #2980b9; margin-top: 2.5rem; padding-left: 10px; border-left: 5px solid #f1c40f; }
        h3 { font-size: 1.8rem; color: #16a085; margin-top: 2rem; }
        h4 { font-size: 1.4rem; color: #8e44ad; margin-top: 1.5rem; }
        p { margin-bottom: 1.5rem; text-align: justify; font-size: 1.1rem; }
        .lead { font-size: 1.3rem; font-weight: 300; color: #555; }
        .highlight { background-color: #fffacd; padding: 2px 5px; border-radius: 3px; }
        .bold { font-weight: 700; color: #2c3e50; }
        .italic { font-style: italic; }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        a { color: #3498db; text-decoration: none; transition: color 0.3s ease, background-color 0.3s ease; }
        a:hover { color: #e74c3c; background-color: #f9f9f9; padding: 2px 4px; border-radius: 3px; }
        ul, ol { margin-left: 2rem; margin-bottom: 1.5rem; }
        li { margin-bottom: 0.5rem; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin-top: 30px;
        }
        @media (max-width: 992px) {
            .content-wrapper { grid-template-columns: 1fr; }
        }
        .site-header {
            background: linear-gradient(to right, #1a237e, #283593, #3949ab);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Brush Script MT', cursive;
            font-size: 2.8rem;
            font-weight: bold;
            color: #f1c40f;
            text-decoration: none;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .my-logo:hover { color: #fff; background: none; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .main-nav a {
            color: #ecf0f1;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 4px;
        }
        .main-nav a:hover, .main-nav a.active {
            background-color: #e74c3c;
            color: white;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .main-nav ul {
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: #283593;
                padding: 20px;
                display: none;
                box-shadow: 0 5px 10px rgba(0,0,0,0.2);
            }
            .main-nav.active ul { display: flex; }
            .hamburger { display: block; }
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.95rem;
            background-color: #f8f9fa;
            border-radius: 5px;
            margin-top: 10px;
        }
        .breadcrumb a { color: #7f8c8d; }
        .breadcrumb a:hover { color: #e74c3c; }
        .breadcrumb span { color: #95a5a6; }
        .interactive-module {
            background: white;
            padding: 25px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin-bottom: 30px;
        }
        .module-title { font-size: 1.5rem; margin-bottom: 20px; color: #2c3e50; }
        .form-group { margin-bottom: 20px; }
        label { display: block; margin-bottom: 8px; font-weight: 600; }
        input, textarea, select {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid #ddd;
            border-radius: 6px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #3498db;
        }
        button, .btn {
            background: linear-gradient(to right, #3498db, #2980b9);
            color: white;
            border: none;
            padding: 14px 24px;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-block;
            text-align: center;
        }
        button:hover, .btn:hover {
            background: linear-gradient(to right, #e74c3c, #c0392b);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(231, 76, 60, 0.4);
        }
        .main-article { background: white; padding: 40px; border-radius: 15px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 20px;
            border-bottom: 1px solid #eee;
            margin-bottom: 30px;
            font-size: 0.95rem;
            color: #7f8c8d;
        }
        .featured-image {
            margin: 30px auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            max-width: 800px;
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #7f8c8d;
            padding: 10px;
            background: #f9f9f9;
        }
        .pull-quote {
            border-left: 5px solid #f1c40f;
            padding: 25px;
            margin: 30px 0;
            background: #fcf8e3;
            font-size: 1.3rem;
            font-style: italic;
            color: #555;
        }
        .content-link {
            color: #2980b9;
            border-bottom: 1px dashed #2980b9;
        }
        .content-link:hover { border-bottom: 1px solid #e74c3c; }
        .sidebar { background: white; padding: 25px; border-radius: 10px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); align-self: start; }
        .sidebar-widget { margin-bottom: 30px; }
        .widget-title { font-size: 1.3rem; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #f1c40f; }
        .site-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 40px 0 20px;
            margin-top: 60px;
        }
        .footer-container { display: flex; flex-wrap: wrap; justify-content: space-between; }
        .footer-section { flex: 1; min-width: 250px; margin-bottom: 30px; }
        .footer-section h3 { color: #f1c40f; font-size: 1.4rem; margin-bottom: 20px; }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a { color: #bdc3c7; }
        .footer-links a:hover { color: #f1c40f; }
        friend-link {
            display: block;
            background: #34495e;
            padding: 15px;
            border-radius: 5px;
            margin-bottom: 10px;
            text-align: center;
        }
        friend-link a { color: #f1c40f; font-weight: bold; }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #34495e;
            color: #95a5a6;
            font-size: 0.9rem;
            width: 100%;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .main-article { padding: 25px; }
            .interactive-module, .sidebar { padding: 20px; }
        }