* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #0a1a2a;
            color: #e0e0e0;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: #4fc3f7;
            text-decoration: none;
            transition: color 0.3s ease, transform 0.2s ease;
        }
        a:hover {
            color: #29b6f6;
            transform: translateY(-1px);
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0c2b4b 0%, #051422 100%);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #ffcc00, #ff9900);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: 1px;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #bbdefb;
            font-weight: 600;
            padding: 0.5rem 0.75rem;
            border-radius: 4px;
        }
        .main-nav a:hover {
            background-color: rgba(33, 150, 243, 0.15);
            color: #29b6f6;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: #bbdefb;
            border-radius: 2px;
            transition: 0.3s;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #11293d;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #90caf9;
        }
        .breadcrumb a:after {
            content: " › ";
            margin: 0 8px;
            color: #5d99c6;
        }
        .breadcrumb a:last-child:after {
            content: "";
        }
        .search-section {
            background-color: #11293d;
            padding: 1.5rem 0;
            text-align: center;
            border-bottom: 1px solid #1e3a5c;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
        }
        .search-input {
            flex: 1;
            padding: 0.85rem 1.2rem;
            border: 2px solid #1e3a5c;
            border-radius: 50px 0 0 50px;
            background-color: #0a1a2a;
            color: #fff;
            font-size: 1rem;
        }
        .search-button {
            background: linear-gradient(90deg, #2196f3, #1976d2);
            color: white;
            border: none;
            border-radius: 0 50px 50px 0;
            padding: 0 1.8rem;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .search-button:hover {
            background: linear-gradient(90deg, #1976d2, #0d47a1);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2.5rem 0;
        }
        .article-container {
            background-color: #11293d;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
        }
        .sidebar {
            background-color: #11293d;
            border-radius: 12px;
            padding: 1.8rem;
            align-self: start;
            position: sticky;
            top: 140px;
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3);
        }
        .sidebar h3 {
            color: #ffcc00;
            margin-bottom: 1.2rem;
            border-bottom: 2px solid #1e3a5c;
            padding-bottom: 0.5rem;
        }
        .sidebar ul {
            list-style: none;
        }
        .sidebar li {
            margin-bottom: 0.8rem;
            padding-left: 1.2rem;
            position: relative;
        }
        .sidebar li:before {
            content: "♠";
            color: #2196f3;
            position: absolute;
            left: 0;
        }
        h1 {
            font-size: 2.8rem;
            color: #ffcc00;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-shadow: 0 2px 4px rgba(0,0,0,0.5);
        }
        h2 {
            font-size: 2rem;
            color: #4fc3f7;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #1e3a5c;
        }
        h3 {
            font-size: 1.6rem;
            color: #81d4fa;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #b3e5fc;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            color: #bbdefb;
            font-weight: 500;
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: rgba(255, 204, 0, 0.1);
            border-left: 4px solid #ffcc00;
            padding: 1.2rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
            background-color: #0a1a2a;
            padding: 1.5rem;
            border-radius: 10px;
        }
        .stat-item {
            text-align: center;
            padding: 1rem;
            background-color: #1e3a5c;
            border-radius: 8px;
        }
        .stat-value {
            font-size: 2.5rem;
            font-weight: 800;
            color: #ffcc00;
            display: block;
        }
        .stat-label {
            font-size: 0.95rem;
            color: #bbdefb;
        }
        .button {
            display: inline-block;
            background: linear-gradient(90deg, #ff9800, #ff5722);
            color: white;
            padding: 0.8rem 1.8rem;
            border-radius: 50px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
            margin: 0.5rem;
        }
        .button:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(255, 87, 34, 0.3);
            background: linear-gradient(90deg, #ff5722, #ff9800);
        }
        .user-feedback {
            background-color: #0a1a2a;
            padding: 2rem;
            border-radius: 12px;
            margin-top: 3rem;
        }
        .rating-form, .comment-form {
            margin-bottom: 2.5rem;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 5px;
            margin: 1rem 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #ccc;
            font-size: 2rem;
            cursor: pointer;
            transition: color 0.3s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #ffcc00;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-control {
            width: 100%;
            padding: 0.9rem;
            border-radius: 8px;
            border: 1px solid #1e3a5c;
            background-color: #11293d;
            color: #fff;
            font-size: 1rem;
        }
        .form-control:focus {
            outline: none;
            border-color: #2196f3;
            box-shadow: 0 0 0 2px rgba(33, 150, 243, 0.2);
        }
        .site-footer {
            background-color: #051422;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
            border-top: 1px solid #1e3a5c;
        }
        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h4 {
            color: #ffcc00;
            margin-bottom: 1.2rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        friend-link {
            display: block;
            background-color: #11293d;
            padding: 1rem;
            border-radius: 6px;
            margin-bottom: 0.8rem;
            border-left: 4px solid #2196f3;
            transition: background-color 0.3s;
        }
        friend-link:hover {
            background-color: #1e3a5c;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #1e3a5c;
            color: #90a4ae;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: #0c2b4b;
                padding: 1rem;
                box-shadow: 0 10px 15px rgba(0,0,0,0.5);
                border-top: 1px solid #1e3a5c;
            }
            .main-nav.active ul {
                display: flex;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .article-container {
                padding: 1.8rem;
            }
            .header-container {
                flex-wrap: wrap;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .article-container, .sidebar, .user-feedback {
            animation: fadeIn 0.8s ease-out;
        }