* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #0a0e17;
            color: #e0e0e0;
            line-height: 1.7;
            overflow-x: hidden;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: #4dabf7;
            text-decoration: none;
            transition: color 0.3s ease, transform 0.2s ease;
        }
        a:hover {
            color: #74c0fc;
            transform: translateY(-1px);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .site-header {
            background: linear-gradient(135deg, #1a2332 0%, #0d1117 100%);
            border-bottom: 2px solid #2d3748;
            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, #00b4d8, #90e0ef);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 4px rgba(0, 180, 216, 0.3);
        }
        .my-logo:hover {
            transform: scale(1.03);
        }
        .nav-primary {
            display: flex;
            gap: 2rem;
        }
        .nav-link {
            color: #cbd5e0;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #00b4d8;
            transition: width 0.3s ease;
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #90e0ef;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #111827;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #a0aec0;
        }
        .breadcrumb a:hover {
            color: #4dabf7;
        }
        .breadcrumb span {
            color: #718096;
            margin: 0 8px;
        }
        .main-content {
            flex: 1;
            padding: 2rem 0;
        }
        article {
            background: rgba(26, 35, 50, 0.8);
            border-radius: 12px;
            padding: 2.5rem;
            margin-bottom: 2rem;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
            border: 1px solid #2d3748;
        }
        h1 {
            font-size: 3.2rem;
            color: #ffffff;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-align: center;
            background: linear-gradient(90deg, #00b4d8, #90e0ef);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        h2 {
            font-size: 2.2rem;
            color: #4dabf7;
            margin-top: 3rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #2d3748;
        }
        h3 {
            font-size: 1.6rem;
            color: #74c0fc;
            margin-top: 2rem;
            margin-bottom: 0.8rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #a5d8ff;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            color: #cbd5e0;
            font-weight: 300;
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: rgba(0, 180, 216, 0.1);
            border-left: 4px solid #00b4d8;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .featured-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            margin: 2.5rem auto;
            border: 3px solid #2d3748;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #a0aec0;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        strong {
            color: #ffffff;
            font-weight: 700;
        }
        .quote {
            font-style: italic;
            font-size: 1.2rem;
            color: #cbd5e0;
            border-left: 4px solid #4dabf7;
            padding-left: 1.5rem;
            margin: 2rem 0;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        .interactive-module {
            background: rgba(30, 41, 59, 0.9);
            border-radius: 10px;
            padding: 2rem;
            margin: 3rem 0;
            border: 1px solid #475569;
        }
        .module-title {
            color: #90e0ef;
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        form {
            display: grid;
            gap: 1.2rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        label {
            margin-bottom: 0.5rem;
            color: #cbd5e0;
            font-weight: 600;
        }
        input, textarea, select {
            padding: 0.8rem 1rem;
            border-radius: 6px;
            border: 1px solid #475569;
            background-color: #1e293b;
            color: #f1f5f9;
            font-size: 1rem;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #00b4d8;
            box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.2);
        }
        textarea {
            min-height: 120px;
            resize: vertical;
        }
        button, .btn {
            background: linear-gradient(90deg, #0077b6, #0096c7);
            color: white;
            border: none;
            padding: 0.9rem 1.8rem;
            border-radius: 6px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
            display: inline-block;
        }
        button:hover, .btn:hover {
            background: linear-gradient(90deg, #0096c7, #00b4d8);
            transform: translateY(-2px);
            box-shadow: 0 7px 14px rgba(0, 150, 199, 0.3);
        }
        .rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 5px;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 2rem;
            color: #475569;
            cursor: pointer;
            transition: color 0.2s;
        }
        .rating input:checked ~ label,
        .rating label:hover,
        .rating label:hover ~ label {
            color: #ffd700;
        }
        .site-footer {
            background: #0d1117;
            border-top: 2px solid #2d3748;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #90e0ef;
            margin-bottom: 1.2rem;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
            margin-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        friend-link {
            display: block;
            background: rgba(30, 41, 59, 0.5);
            padding: 1.2rem;
            border-radius: 8px;
            margin-bottom: 1rem;
            border-left: 4px solid #00b4d8;
        }
        friend-link a {
            font-weight: 700;
            color: #74c0fc;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2d3748;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.8rem; }
            h2 { font-size: 2rem; }
            article { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-primary {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background: #1a2332;
                flex-direction: column;
                align-items: center;
                padding: 2rem;
                gap: 1.5rem;
                transform: translateY(-100%);
                opacity: 0;
                visibility: hidden;
                transition: all 0.4s ease;
                box-shadow: 0 10px 15px rgba(0,0,0,0.5);
                z-index: 999;
            }
            .nav-primary.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .header-container {
                flex-wrap: wrap;
            }
            .my-logo {
                font-size: 1.9rem;
            }
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.4rem; }
            .lead { font-size: 1.1rem; }
        }
        @media (max-width: 480px) {
            .container { padding: 0 15px; }
            article { padding: 1.5rem; }
            h1 { font-size: 2rem; }
            .interactive-module { padding: 1.5rem; }
            .module-title { font-size: 1.5rem; }
        }