* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary-blue: #1a6bc4;
            --secondary-blue: #4a90e2;
            --accent-orange: #ff9800;
            --dark-bg: #0d1b2a;
            --light-bg: #f8f9fa;
            --text-dark: #2d3748;
            --text-light: #718096;
            --success-green: #38a169;
            --border-color: #e2e8f0;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--light-bg);
            color: var(--text-dark);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul, ol {
            list-style-position: inside;
            margin-left: 1.2rem;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 700; }
        .highlight { color: var(--accent-orange); font-weight: 600; }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
            color: white;
            border-radius: 8px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
            background: linear-gradient(135deg, var(--secondary-blue), var(--primary-blue));
        }
        .section-padding {
            padding: 60px 0;
        }
        .site-header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-blue);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--accent-orange);
        }
        .my-logo:hover {
            color: var(--secondary-blue);
        }
        .nav-desktop ul {
            display: flex;
            gap: 30px;
        }
        .nav-desktop a {
            font-weight: 600;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        .nav-desktop a:hover,
        .nav-desktop a:focus {
            color: var(--primary-blue);
            border-bottom-color: var(--accent-orange);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--primary-blue);
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: white;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            padding: 20px;
            z-index: 999;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            padding: 15px;
            border-bottom: 1px solid var(--border-color);
            font-weight: 600;
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .nav-mobile a:hover {
            background-color: var(--light-bg);
            color: var(--primary-blue);
            padding-left: 25px;
        }
        .breadcrumb {
            background-color: #edf2f7;
            padding: 12px 20px;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary-blue);
            text-decoration: underline;
        }
        .breadcrumb span {
            margin: 0 8px;
            color: #a0aec0;
        }
        .search-module {
            background: linear-gradient(to right, #1a6bc4, #2c5282);
            padding: 30px 20px;
            text-align: center;
            color: white;
        }
        .search-module h2 {
            margin-bottom: 20px;
            font-size: 1.8rem;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .search-form input {
            flex-grow: 1;
            padding: 16px 24px;
            border: none;
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--accent-orange);
            color: white;
            border: none;
            padding: 0 30px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #e68900;
        }
        main {
            background-color: white;
            border-radius: 12px;
            box-shadow: var(--shadow);
            margin: 30px auto;
            overflow: hidden;
            max-width: 1280px;
        }
        article {
            padding: 40px;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--dark-bg);
            margin-bottom: 20px;
            line-height: 1.2;
            border-bottom: 3px solid var(--accent-orange);
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-blue);
            margin: 40px 0 20px;
            padding-top: 10px;
        }
        h3 {
            font-size: 1.6rem;
            color: var(--secondary-blue);
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--text-dark);
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
            padding: 15px 0;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 30px;
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .featured-image {
            width: 100%;
            border-radius: 12px;
            margin: 30px 0;
            box-shadow: var(--shadow);
        }
        .info-box {
            background-color: #f0f9ff;
            border-left: 5px solid var(--primary-blue);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .info-box h4 {
            margin-top: 0;
            color: var(--primary-blue);
        }
        .link-list {
            background: #f7fafc;
            padding: 20px;
            border-radius: 8px;
            margin: 25px 0;
        }
        .link-list h4 {
            margin-top: 0;
        }
        .link-list a {
            color: var(--primary-blue);
            display: inline-block;
            margin: 5px 10px 5px 0;
        }
        .link-list a:hover {
            text-decoration: underline;
        }
        .interactive-modules {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin: 50px 0;
        }
        .module-card {
            background: var(--light-bg);
            border-radius: 12px;
            padding: 25px;
            box-shadow: var(--shadow);
            border-top: 4px solid var(--primary-blue);
        }
        .module-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .module-card form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .module-card input,
        .module-card textarea,
        .module-card select {
            padding: 12px 15px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .module-card input:focus,
        .module-card textarea:focus,
        .module-card select:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(26, 107, 196, 0.1);
        }
        .module-card textarea {
            min-height: 120px;
            resize: vertical;
        }
        .stars {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: #e2e8f0;
            cursor: pointer;
            margin: 10px 0;
        }
        .stars .active {
            color: #ffc107;
        }
        .rating-result {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--success-green);
            margin-top: 10px;
        }
        footer {
            background-color: var(--dark-bg);
            color: white;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 15px;
            color: white;
        }
        .footer-links h4 {
            color: var(--accent-orange);
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
            margin-left: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #cbd5e0;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 20px;
            border-radius: 8px;
            margin: 20px 0;
        }
        friend-link h4 {
            color: var(--accent-orange);
            margin-bottom: 10px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #2d3748;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.4rem; }
            article { padding: 30px; }
        }
        @media (max-width: 768px) {
            .header-container { padding: 12px 15px; }
            .nav-desktop { display: none; }
            .hamburger { display: block; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .search-form { flex-direction: column; border-radius: 12px; }
            .search-form input, .search-form button { width: 100%; border-radius: 0; padding: 14px; }
            .interactive-modules { grid-template-columns: 1fr; }
            article { padding: 20px; }
        }
        @media (max-width: 480px) {
            .article-meta { flex-direction: column; align-items: flex-start; }
            .btn { padding: 10px 20px; width: 100%; }
            .footer-content { grid-template-columns: 1fr; }
        }