* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background-color: #f8f9fa;
            padding: 0;
            margin: 0;
        }
        a {
            color: #1a73e8;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #0d47a1;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1e3c72, #2a5298);
            color: white;
            padding: 20px 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.5rem;
            font-weight: 900;
            color: #ffcc00;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
            letter-spacing: 1.5px;
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
        }
        .my-logo a:hover {
            color: #ffdb4d;
        }
        .search-form {
            display: flex;
            max-width: 400px;
            width: 100%;
        }
        .search-form input[type="search"] {
            flex: 1;
            padding: 12px 16px;
            border: none;
            border-radius: 25px 0 0 25px;
            font-size: 1rem;
            outline: none;
        }
        .search-form button {
            background: #ffcc00;
            color: #1a1a1a;
            border: none;
            border-radius: 0 25px 25px 0;
            padding: 12px 20px;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s ease;
        }
        .search-form button:hover {
            background: #ffdb4d;
        }
        nav {
            margin-top: 20px;
        }
        .nav-desktop {
            display: flex;
            gap: 25px;
            list-style: none;
        }
        .nav-desktop a {
            color: white;
            font-weight: 600;
            padding: 10px 15px;
            border-radius: 5px;
            transition: background 0.3s ease;
        }
        .nav-desktop a:hover {
            background: rgba(255, 255, 255, 0.2);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
            background: none;
            border: none;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            list-style: none;
            background: #2a5298;
            padding: 15px;
            border-radius: 8px;
            margin-top: 15px;
        }
        .nav-mobile a {
            color: white;
            padding: 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            display: block;
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .nav-mobile a:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            padding: 15px 0;
            background: #e9ecef;
            margin-bottom: 30px;
            border-radius: 8px;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            margin-right: 10px;
            font-size: 0.95rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin-left: 10px;
            color: #666;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 30px 0;
        }
        @media (max-width: 768px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .content-area {
            background: white;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.05);
        }
        .sidebar {
            background: white;
            padding: 25px;
            border-radius: 12px;
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.05);
        }
        .sidebar h3 {
            color: #1e3c72;
            border-bottom: 3px solid #ffcc00;
            padding-bottom: 10px;
            margin-bottom: 20px;
            font-size: 1.5rem;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #444;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #1a73e8;
            outline: none;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        button[type="submit"] {
            background: #1a73e8;
            color: white;
            border: none;
            padding: 14px 24px;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s ease;
            width: 100%;
        }
        button[type="submit"]:hover {
            background: #0d47a1;
        }
        .rating {
            display: flex;
            gap: 10px;
            align-items: center;
            margin-bottom: 15px;
        }
        .rating-stars {
            display: flex;
            gap: 5px;
        }
        .rating-stars i {
            color: #ffcc00;
            cursor: pointer;
            font-size: 1.5rem;
            transition: color 0.3s ease;
        }
        .rating-stars i:hover {
            color: #ffdb4d;
        }
        h1 {
            font-size: 2.8rem;
            color: #1e3c72;
            margin-bottom: 25px;
            line-height: 1.3;
            text-align: center;
            border-bottom: 4px solid #ffcc00;
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2.2rem;
            color: #2a5298;
            margin: 35px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #e0e0e0;
        }
        h3 {
            font-size: 1.8rem;
            color: #3a6bc9;
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.4rem;
            color: #5a8dee;
            margin: 25px 0 12px;
        }
        p {
            margin-bottom: 22px;
            font-size: 1.1rem;
            text-align: justify;
        }
        strong {
            color: #1a1a1a;
            font-weight: 800;
        }
        em {
            color: #666;
            font-style: italic;
        }
        .highlight {
            background: #fffacd;
            padding: 5px 10px;
            border-left: 4px solid #ffcc00;
            margin: 20px 0;
        }
        .content-links {
            list-style: none;
            padding: 20px;
            background: #f1f8ff;
            border-radius: 8px;
            margin: 25px 0;
        }
        .content-links li {
            margin-bottom: 12px;
        }
        .content-links a {
            font-weight: 600;
            color: #1e3c72;
        }
        .content-links a:hover {
            text-decoration: underline;
        }
        .feature-img {
            margin: 30px auto;
            text-align: center;
            border: 5px solid #ffcc00;
            border-radius: 12px;
            overflow: hidden;
            max-width: 800px;
        }
        .feature-img img {
            display: block;
            width: 100%;
            height: auto;
        }
        footer {
            background: #1e3c72;
            color: white;
            padding: 40px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h4 {
            color: #ffcc00;
            margin-bottom: 20px;
            font-size: 1.5rem;
        }
        friend-link {
            display: block;
            margin-bottom: 15px;
            font-size: 1.1rem;
        }
        friend-link a {
            color: #b3d1ff;
            text-decoration: none;
        }
        friend-link a:hover {
            color: white;
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.95rem;
            color: #b3d1ff;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            .nav-desktop { display: none; }
            .hamburger { display: block; }
            #hamburger-toggle:checked + .nav-mobile {
                display: flex;
            }
            .nav-mobile {
                display: none;
            }
        }
        @media (max-width: 576px) {
            .header-top {
                flex-direction: column;
                gap: 20px;
                text-align: center;
            }
            .search-form {
                max-width: 100%;
            }
            .content-area, .sidebar {
                padding: 20px;
            }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.8rem; }
        }
        .text-center { text-align: center; }
        .mb-20 { margin-bottom: 20px; }
        .mt-30 { margin-top: 30px; }
        .pb-10 { padding-bottom: 10px; }