* { 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-color: #f8f9fa;
            overflow-x: hidden;
        }
        a { color: #2c6ec9; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #e74c3c; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #1a237e 0%, #283593 100%);
            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: 2.2rem;
            font-weight: 900;
            color: #4fc3f7;
            text-transform: uppercase;
            letter-spacing: -1px;
            text-shadow: 2px 2px 0 #1565c0;
        }
        .my-logo span { color: #ffeb3b; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0.75rem;
            border-radius: 4px;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background-color: rgba(76, 175, 80, 0.2);
            color: #4caf50;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .breadcrumb {
            background-color: #e3f2fd;
            padding: 0.8rem 20px;
            font-size: 0.9rem;
            border-bottom: 1px solid #bbdefb;
        }
        .breadcrumb a { color: #1a237e; }
        .breadcrumb a:hover { text-decoration: underline; }
        .search-module {
            background: #fff;
            padding: 2rem;
            margin: 2rem 0;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            text-align: center;
        }
        .search-module h2 { margin-bottom: 1rem; color: #1a237e; }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid #2c6ec9;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
        }
        .search-btn {
            background: linear-gradient(to right, #2c6ec9, #1a237e);
            color: white;
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-size: 1rem;
            font-weight: bold;
            transition: opacity 0.3s;
        }
        .search-btn:hover { opacity: 0.9; }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 2rem 0;
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.06);
        }
        .last-updated {
            font-style: italic;
            color: #666;
            border-left: 4px solid #4caf50;
            padding-left: 1rem;
            margin: 1.5rem 0;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #ffeb3b;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: #283593;
            margin: 2.5rem 0 1rem;
            padding-top: 1rem;
            border-top: 1px dashed #ccc;
        }
        h3 {
            font-size: 1.5rem;
            color: #3949ab;
            margin: 1.8rem 0 0.8rem;
        }
        h4 {
            font-size: 1.2rem;
            color: #5c6bc0;
            margin: 1.5rem 0 0.7rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
            hyphens: auto;
        }
        .lead {
            font-size: 1.25rem;
            font-weight: 300;
            color: #555;
            margin-bottom: 2rem;
        }
        em { font-style: italic; }
        strong {
            color: #d32f2f;
            font-weight: 700;
        }
        .highlight-box {
            background: linear-gradient(120deg, #e1f5fe 0%, #f3e5f5 100%);
            border-left: 5px solid #7e57c2;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 {
            color: #1a237e;
            border-bottom: 2px solid #ffeb3b;
            padding-bottom: 0.5rem;
            margin-top: 0;
        }
        .sidebar ul {
            list-style: none;
            margin-top: 1rem;
        }
        .sidebar li { margin-bottom: 0.8rem; }
        .sidebar a { display: block; padding: 0.5rem; border-radius: 4px; }
        .sidebar a:hover { background-color: #f0f4ff; }
        .user-interaction {
            background: white;
            padding: 2rem;
            margin: 2rem 0;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 1.5rem;
        }
        .comment-form textarea,
        .rating-form select,
        .form-input {
            width: 100%;
            padding: 0.9rem;
            margin-bottom: 1rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
        }
        .submit-btn {
            background: linear-gradient(to right, #388e3c, #2e7d32);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 50px;
            cursor: pointer;
            font-weight: bold;
            transition: transform 0.2s;
        }
        .submit-btn:hover { transform: translateY(-2px); }
        .stars { color: #ffc107; font-size: 1.2rem; margin: 0.5rem 0; }
        .site-footer {
            background: #1a237e;
            color: #e8eaf6;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 900;
            color: #4fc3f7;
            margin-bottom: 1rem;
        }
        friend-link {
            display: block;
            margin: 1rem 0;
            padding: 0.8rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 6px;
            transition: background 0.3s;
        }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #3949ab;
            font-size: 0.9rem;
            color: #9fa8da;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
            .sidebar { position: static; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #283593;
                padding: 1rem;
                border-top: 1px solid #3949ab;
            }
            .main-nav.active ul { display: flex; }
            h1 { font-size: 2.2rem; }
            .header-container, .container { padding: 0 15px; }
            .search-form { flex-direction: column; }
            .search-input { border-radius: 50px; margin-bottom: 10px; }
            .search-btn { border-radius: 50px; padding: 0.9rem; }
        }