* { 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: #e0e0e0;
            background: linear-gradient(135deg, #0a0e17 0%, #1a2332 100%);
            background-attachment: fixed;
            min-height: 100vh;
            position: relative;
        }
        body::before {
            content: '';
            position: fixed;
            top: 0; left: 0;
            width: 100%; height: 100%;
            background: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI1MCIgaGVpZ2h0PSI1MCI+PGNpcmNsZSBjeD0iMiIgY3k9IjIiIHI9IjEiIGZpbGw9IiMwMDJjNTIiIGZpbGwtb3BhY2l0eT0iMC4wNSIvPjwvc3ZnPg==');
            z-index: -1;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 800; color: #4fc3f7; }
        .highlight { background-color: rgba(79, 195, 247, 0.15); padding: 0 5px; border-radius: 3px; }
        .section-spacing { margin: 4rem 0; }
        .last-updated { font-size: 0.9rem; color: #90a4ae; margin-top: 2rem; padding-top: 1rem; border-top: 1px solid #2a3a50; }
        header {
            background-color: rgba(10, 14, 23, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid #00bcd4;
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 1rem 0;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-family: 'Arial Black', Impact, sans-serif;
            font-size: 2.2rem;
            font-weight: 900;
            text-decoration: none;
            background: linear-gradient(90deg, #00bcd4, #4fc3f7);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: 1.5px;
            transition: all 0.3s ease;
        }
        .logo a:hover {
            transform: scale(1.05);
            text-shadow: 0 0 15px rgba(79, 195, 247, 0.5);
        }
        .logo .tagline {
            font-size: 0.7rem;
            color: #b0bec5;
            letter-spacing: 2px;
            margin-top: -5px;
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            color: #b0bec5;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
            transition: color 0.3s;
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #4fc3f7;
            transition: width 0.3s ease;
        }
        .desktop-nav a:hover {
            color: #4fc3f7;
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #4fc3f7;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background-color: rgba(10, 14, 23, 0.98);
            border-top: 1px solid #2a3a50;
            padding: 1rem 0;
            flex-direction: column;
            align-items: center;
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav ul {
            list-style: none;
            width: 100%;
            text-align: center;
        }
        .mobile-nav li {
            margin: 0.8rem 0;
        }
        .mobile-nav a {
            color: #e0e0e0;
            text-decoration: none;
            font-size: 1.2rem;
            padding: 0.5rem 2rem;
            display: block;
            transition: background 0.3s;
        }
        .mobile-nav a:hover {
            background-color: rgba(79, 195, 247, 0.1);
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: rgba(26, 35, 50, 0.7);
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin: 0 10px;
            color: #4fc3f7;
        }
        .breadcrumb a {
            color: #b0bec5;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: #4fc3f7;
            text-decoration: underline;
        }
        .breadcrumb li:last-child a {
            color: #4fc3f7;
            font-weight: bold;
        }
        main {
            padding: 2rem 0;
            min-height: 80vh;
        }
        article {
            background-color: rgba(18, 25, 40, 0.8);
            border-radius: 12px;
            padding: 3rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
            border: 1px solid #2a3a50;
        }
        h1 {
            font-size: 3.2rem;
            margin-bottom: 1.5rem;
            color: #ffffff;
            text-align: center;
            background: linear-gradient(90deg, #00bcd4, #4fc3f7);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1.2;
        }
        h2 {
            font-size: 2.4rem;
            margin: 3rem 0 1.5rem;
            color: #4fc3f7;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #2a3a50;
        }
        h3 {
            font-size: 1.8rem;
            margin: 2.5rem 0 1rem;
            color: #81d4fa;
        }
        h4 {
            font-size: 1.4rem;
            margin: 2rem 0 0.8rem;
            color: #b3e5fc;
        }
        .intro {
            font-size: 1.3rem;
            color: #b0bec5;
            margin-bottom: 2.5rem;
            text-align: center;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        blockquote {
            border-left: 4px solid #00bcd4;
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #b0bec5;
            background-color: rgba(0, 188, 212, 0.05);
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        ul, ol {
            margin-bottom: 1.5rem;
            padding-left: 2rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        a.content-link {
            color: #4fc3f7;
            text-decoration: none;
            border-bottom: 1px dashed #4fc3f7;
            transition: all 0.2s;
        }
        a.content-link:hover {
            color: #80deea;
            border-bottom: 1px solid #80deea;
            background-color: rgba(79, 195, 247, 0.1);
        }
        .article-image {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            border: 2px solid #2a3a50;
            margin: 2.5rem auto;
            display: block;
            box-shadow: 0 5px 15px rgba(0,0,0,0.5);
            transition: transform 0.5s ease, box-shadow 0.5s ease;
        }
        .article-image:hover {
            transform: scale(1.02);
            box-shadow: 0 10px 25px rgba(79, 195, 247, 0.3);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #90a4ae;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .interactive-module {
            background: linear-gradient(145deg, rgba(26, 35, 50, 0.9), rgba(10, 14, 23, 0.9));
            border-radius: 10px;
            padding: 2.5rem;
            margin: 3rem 0;
            border: 1px solid #37474f;
            box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
        }
        .module-title {
            color: #00bcd4;
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .module-title i { font-size: 1.5rem; }
        .search-form {
            display: flex;
            max-width: 500px;
            margin: 0 auto;
        }
        .search-form input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: 2px solid #2a3a50;
            border-radius: 50px 0 0 50px;
            background-color: #0a0e17;
            color: #e0e0e0;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-form input:focus {
            border-color: #00bcd4;
        }
        .search-form button {
            background: linear-gradient(90deg, #00bcd4, #008ba3);
            color: white;
            border: none;
            border-radius: 0 50px 50px 0;
            padding: 0 2rem;
            cursor: pointer;
            font-weight: bold;
            transition: all 0.3s;
        }
        .search-form button:hover {
            background: linear-gradient(90deg, #4fc3f7, #00bcd4);
            transform: scale(1.05);
        }
        .user-feedback {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }
        .comment-form, .rating-form {
            background-color: rgba(26, 35, 50, 0.8);
            padding: 2rem;
            border-radius: 10px;
            border: 1px solid #37474f;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            color: #b0bec5;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem 1rem;
            background-color: #0a0e17;
            border: 1px solid #2a3a50;
            border-radius: 6px;
            color: #e0e0e0;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #4fc3f7;
        }
        textarea {
            min-height: 150px;
            resize: vertical;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .stars input { display: none; }
        .stars label {
            font-size: 2rem;
            color: #555;
            cursor: pointer;
            transition: color 0.2s;
        }
        .stars label:hover,
        .stars label:hover ~ label,
        .stars input:checked ~ label {
            color: #ffb300;
        }
        .submit-btn {
            background: linear-gradient(90deg, #4fc3f7, #00bcd4);
            color: white;
            border: none;
            border-radius: 50px;
            padding: 1rem 2rem;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            width: 100%;
            transition: all 0.3s;
        }
        .submit-btn:hover {
            background: linear-gradient(90deg, #80deea, #4fc3f7);
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(79, 195, 247, 0.3);
        }
        footer {
            background-color: rgba(10, 14, 23, 0.98);
            border-top: 2px solid #00bcd4;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: #4fc3f7;
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #b0bec5;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: #4fc3f7;
            padding-left: 5px;
        }
        friend-link {
            display: inline-block;
            background-color: rgba(79, 195, 247, 0.1);
            color: #4fc3f7;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            text-decoration: none;
            margin: 0.3rem;
            font-size: 0.9rem;
            transition: all 0.3s;
        }
        friend-link:hover {
            background-color: rgba(79, 195, 247, 0.3);
            transform: translateY(-2px);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2a3a50;
            color: #90a4ae;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.8rem; }
            h2 { font-size: 2.1rem; }
            h3 { font-size: 1.6rem; }
            article { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            .desktop-nav { display: none; }
            .hamburger { display: block; }
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.9rem; }
            .intro { font-size: 1.1rem; }
            .interactive-module { padding: 1.8rem; }
            .user-feedback { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            .container { padding: 0 15px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            article { padding: 1.5rem; }
            .logo a { font-size: 1.8rem; }
        }