* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
            max-width: 100%;
            overflow-x: hidden;
        }
        a { text-decoration: none; color: inherit; transition: color 0.3s ease; }
        ul, ol { list-style-position: inside; margin-left: 1em; }
        img { max-width: 100%; height: auto; display: block; }
        h1 { font-size: clamp(2rem, 5vw, 3.5rem); margin-bottom: 1rem; color: #2c3e50; }
        h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); margin: 2rem 0 1rem; color: #34495e; border-bottom: 2px solid #3498db; padding-bottom: 0.5rem; }
        h3 { font-size: clamp(1.25rem, 3vw, 1.8rem); margin: 1.5rem 0 0.75rem; color: #16a085; }
        h4 { font-size: 1.2rem; margin: 1rem 0 0.5rem; color: #27ae60; }
        p, li { margin-bottom: 1.2rem; font-size: 1.05rem; line-height: 1.7; }
        .lead { font-size: 1.3rem; font-weight: 300; color: #555; margin-bottom: 2rem; }
        .highlight { background-color: #fffacd; padding: 2px 6px; border-radius: 3px; }
        .updated { font-size: 0.9rem; color: #7f8c8d; margin-bottom: 2rem; font-style: italic; }
        .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: 2rem;
        }
        @media (max-width: 992px) {
            .content-wrapper { grid-template-columns: 1fr; }
        }
        .site-header {
            background: linear-gradient(135deg, #1a2980, #26d0ce);
            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: 'Arial Black', sans-serif;
            font-size: 2rem;
            font-weight: 900;
            color: white;
            text-transform: uppercase;
            letter-spacing: -1px;
            display: flex;
            align-items: center;
        }
        .my-logo i { margin-right: 10px; color: #f1c40f; }
        .my-logo:hover { color: #f1c40f; }
        .main-nav ul {
            display: flex;
            gap: 2rem;
        }
        .main-nav a {
            padding: 0.5rem 1rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .main-nav a:hover {
            background-color: rgba(255,255,255,0.2);
            color: #f1c40f;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #1a2980;
                flex-direction: column;
                padding: 1rem;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: clip-path 0.4s ease;
            }
            .main-nav.active {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0% 100%);
            }
            .main-nav ul { flex-direction: column; gap: 0.5rem; }
            .main-nav a {
                display: block;
                padding: 0.75rem;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #ecf0f1;
            font-size: 0.9rem;
        }
        .breadcrumb ul {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin-left: 0.5rem;
            color: #7f8c8d;
        }
        .breadcrumb a:hover { color: #3498db; text-decoration: underline; }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 { font-size: 1.3rem; color: #2c3e50; border-bottom: none; padding: 0; }
        .search-box {
            margin-bottom: 2rem;
        }
        .search-form {
            display: flex;
        }
        .search-input {
            flex-grow: 1;
            padding: 12px 15px;
            border: 2px solid #3498db;
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-btn {
            background-color: #3498db;
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            font-size: 1rem;
        }
        .search-btn:hover { background-color: #2980b9; }
        .user-interaction { margin-bottom: 2rem; }
        .form-group { margin-bottom: 1rem; }
        .form-label { display: block; margin-bottom: 0.5rem; font-weight: 600; }
        .form-input, .form-textarea {
            width: 100%;
            padding: 10px;
            border: 1px solid #bdc3c7;
            border-radius: 4px;
            font-size: 1rem;
        }
        .form-textarea { min-height: 100px; resize: vertical; }
        .stars { display: flex; gap: 5px; margin-bottom: 1rem; }
        .star { font-size: 1.5rem; color: #ddd; cursor: pointer; }
        .star:hover, .star.active { color: #f39c12; }
        .form-btn {
            background-color: #2ecc71;
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            transition: background-color 0.3s;
        }
        .form-btn:hover { background-color: #27ae60; }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
        }
        .featured-img {
            width: 100%;
            border-radius: 8px;
            margin: 1.5rem 0;
            border: 5px solid #ecf0f1;
        }
        .quote {
            border-left: 4px solid #3498db;
            padding-left: 1.5rem;
            margin: 1.5rem 0;
            font-style: italic;
            color: #555;
        }
        .link-list {
            background-color: #f8f9fa;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .link-list ul { display: flex; flex-wrap: wrap; gap: 15px; justify-content: center; }
        .link-list li { list-style: none; }
        .link-list a {
            background-color: white;
            padding: 8px 16px;
            border-radius: 20px;
            border: 1px solid #3498db;
            color: #3498db;
            font-weight: 600;
            display: inline-block;
        }
        .link-list a:hover {
            background-color: #3498db;
            color: white;
        }
        .site-footer {
            background-color: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
        }
        .footer-section { flex: 1; min-width: 250px; }
        .footer-section h3 { color: #f1c40f; border-bottom: none; margin-bottom: 1.5rem; }
        .footer-links li { list-style: none; margin-bottom: 0.5rem; }
        .footer-links a:hover { color: #f1c40f; }
        friend-link {
            display: block;
            padding: 10px 15px;
            background-color: #34495e;
            margin-bottom: 10px;
            border-radius: 4px;
            font-weight: 600;
        }
        friend-link:hover { background-color: #3d566e; color: #f1c40f; }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #34495e;
            font-size: 0.9rem;
            color: #95a5a6;
        }