* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #e0e0e0;
            background: linear-gradient(135deg, #0a0e17 0%, #1a2639 100%);
            min-height: 100vh;
            position: relative;
        }
        body::before {
            content: '';
            position: fixed;
            top: 0; left: 0;
            width: 100%; height: 100%;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><rect width="100" height="100" fill="%230a0e17"/><path d="M0,50 L100,50 M50,0 L50,100" stroke="%231a2639" stroke-width="0.5"/></svg>');
            opacity: 0.3;
            z-index: -1;
        }
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        .text-center { text-align: center; }
        .bold { font-weight: 700; color: #4fc3f7; }
        .emoji { margin-right: 5px; }
        .last-updated { font-size: 0.9rem; color: #90a4ae; margin-top: 10px; font-style: italic; }
        .site-header {
            background-color: rgba(10, 14, 23, 0.95);
            border-bottom: 2px solid #00bcd4;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(10px);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 2rem;
            background: linear-gradient(90deg, #00bcd4, #4fc3f7);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-decoration: none;
            text-transform: uppercase;
            letter-spacing: 1px;
            transition: transform 0.3s;
        }
        .my-logo:hover { transform: scale(1.05); }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .main-nav a {
            color: #b0bec5;
            text-decoration: none;
            font-weight: 600;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
            transition: all 0.3s;
        }
        .main-nav a:hover,
        .main-nav a.active { color: #4fc3f7; border-bottom-color: #4fc3f7; }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: #4fc3f7;
            border-radius: 2px;
            transition: 0.3s;
        }
        .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(6px, 6px); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); }
        .breadcrumb {
            padding: 15px 0;
            background-color: rgba(26, 38, 57, 0.8);
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin: 0 10px;
            color: #00bcd4;
        }
        .breadcrumb a {
            color: #b0bec5;
            text-decoration: none;
        }
        .breadcrumb a:hover { color: #4fc3f7; }
        .search-widget {
            background: rgba(26, 38, 57, 0.7);
            padding: 30px;
            border-radius: 10px;
            margin: 30px 0;
            border: 1px solid #37474f;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-form input {
            flex-grow: 1;
            padding: 15px;
            border: none;
            border-radius: 5px 0 0 5px;
            background: #263238;
            color: #fff;
            font-size: 1rem;
        }
        .search-form button {
            background: linear-gradient(90deg, #00bcd4, #008ba3);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 5px 5px 0;
            cursor: pointer;
            font-weight: bold;
            transition: opacity 0.3s;
        }
        .search-form button:hover { opacity: 0.9; }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        .article-content {
            background: rgba(26, 38, 57, 0.7);
            border-radius: 15px;
            padding: 40px;
            border: 1px solid #37474f;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }
        h1 {
            font-size: 2.8rem;
            color: #4fc3f7;
            margin-bottom: 20px;
            line-height: 1.2;
            border-bottom: 3px solid #00bcd4;
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2rem;
            color: #81d4fa;
            margin: 40px 0 20px;
            padding-left: 10px;
            border-left: 5px solid #00bcd4;
        }
        h3 {
            font-size: 1.6rem;
            color: #b3e5fc;
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: #e1f5fe;
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 1.5em;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: #bbdefb;
            font-weight: 300;
            margin-bottom: 30px;
        }
        .content-link {
            color: #4fc3f7;
            text-decoration: none;
            border-bottom: 1px dotted #4fc3f7;
            transition: background-color 0.3s;
        }
        .content-link:hover {
            background-color: rgba(79, 195, 247, 0.1);
            border-bottom-style: solid;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            border-radius: 10px;
            border: 2px solid #00bcd4;
            margin: 30px auto;
            display: block;
            transition: transform 0.5s, box-shadow 0.5s;
        }
        .article-image:hover {
            transform: scale(1.02);
            box-shadow: 0 15px 40px rgba(0, 188, 212, 0.4);
        }
        .sidebar {
            background: rgba(26, 38, 57, 0.7);
            border-radius: 15px;
            padding: 25px;
            border: 1px solid #37474f;
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 {
            color: #4fc3f7;
            margin-top: 0;
            border-bottom: 2px solid #37474f;
            padding-bottom: 10px;
        }
        .quick-nav ul {
            list-style: none;
            margin-top: 15px;
        }
        .quick-nav li { margin-bottom: 12px; }
        .quick-nav a {
            color: #b0bec5;
            text-decoration: none;
            display: block;
            padding: 8px 12px;
            border-radius: 5px;
            transition: all 0.3s;
            border-left: 3px solid transparent;
        }
        .quick-nav a:hover {
            background-color: rgba(79, 195, 247, 0.1);
            border-left-color: #4fc3f7;
            color: #e0e0e0;
        }
        .user-interaction {
            background: rgba(26, 38, 57, 0.7);
            border-radius: 15px;
            padding: 40px;
            margin-top: 40px;
            border: 1px solid #37474f;
        }
        .rating-section, .comment-section {
            margin-bottom: 40px;
        }
        .star-rating {
            direction: rtl;
            display: inline-block;
            font-size: 2rem;
        }
        .star-rating input { display: none; }
        .star-rating label {
            color: #555;
            cursor: pointer;
            padding: 0 3px;
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label { color: #ffc107; }
        .interaction-form {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .form-group { display: flex; flex-direction: column; }
        .form-group label { margin-bottom: 8px; font-weight: bold; color: #bbdefb; }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 12px;
            border-radius: 5px;
            border: 1px solid #546e7a;
            background-color: #263238;
            color: #fff;
            font-size: 1rem;
        }
        .form-group textarea { min-height: 150px; resize: vertical; }
        .submit-btn {
            background: linear-gradient(90deg, #00bcd4, #008ba3);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: bold;
            transition: opacity 0.3s;
            align-self: flex-start;
        }
        .submit-btn:hover { opacity: 0.9; }
        .site-footer {
            background-color: #0a0e17;
            border-top: 2px solid #00bcd4;
            padding: 40px 0 20px;
            margin-top: 60px;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            margin: 30px 0;
        }
        .friend-links a {
            color: #81d4fa;
            text-decoration: none;
            padding: 8px 15px;
            border: 1px solid #37474f;
            border-radius: 5px;
            transition: all 0.3s;
        }
        .friend-links a:hover {
            background-color: rgba(79, 195, 247, 0.1);
            border-color: #4fc3f7;
        }
        .copyright {
            text-align: center;
            color: #90a4ae;
            font-size: 0.9rem;
            padding-top: 20px;
            border-top: 1px solid #37474f;
        }
        @media (max-width: 768px) {
            .hamburger { display: flex; }
            .main-nav ul {
                position: fixed;
                top: 80px;
                left: -100%;
                flex-direction: column;
                background-color: rgba(10, 14, 23, 0.98);
                width: 100%;
                padding: 20px;
                gap: 0;
                transition: left 0.5s;
                border-top: 1px solid #37474f;
            }
            .main-nav ul.active { left: 0; }
            .main-nav li { margin: 10px 0; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .article-content { padding: 25px; }
            .header-content { flex-wrap: wrap; }
        }