* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #0f1520;
            color: #e0e0e0;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: #4da8ff;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #80c1ff;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mb-3 { margin-bottom: 3rem; }
        .mt-2 { margin-top: 2rem; }
        .py-2 { padding-top: 2rem; padding-bottom: 2rem; }
        .highlight {
            background: linear-gradient(90deg, #2a4365, #1a365d);
            border-left: 4px solid #4da8ff;
            padding: 1rem;
            border-radius: 0 8px 8px 0;
            margin: 1.5rem 0;
        }
        header {
            background: linear-gradient(135deg, #1a237e 0%, #0d47a1 100%);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(to right, #ffcc00, #ff9900);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo:hover {
            text-decoration: none;
        }
        .search-form {
            display: flex;
            max-width: 400px;
            width: 100%;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.75rem 1rem;
            border: none;
            border-radius: 30px 0 0 30px;
            background: rgba(255,255,255,0.1);
            color: white;
            font-size: 1rem;
        }
        .search-input::placeholder {
            color: #aaa;
        }
        .search-btn {
            background: #ff9800;
            border: none;
            border-radius: 0 30px 30px 0;
            color: white;
            padding: 0 1.5rem;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-btn:hover {
            background: #ffb74d;
        }
        nav {
            background-color: #152238;
            padding: 0.8rem 0;
        }
        .nav-desktop {
            display: flex;
            justify-content: center;
            gap: 2rem;
            list-style: none;
        }
        .nav-desktop a {
            color: #b0c4de;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 5px;
        }
        .nav-desktop a:hover {
            background: rgba(77, 168, 255, 0.2);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: #152238;
            list-style: none;
            padding: 1rem;
            border-top: 1px solid #2d3e5a;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            padding: 0.8rem;
            border-bottom: 1px solid #2d3e5a;
            color: #b0c4de;
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #aaa;
        }
        .breadcrumb a {
            color: #aaa;
        }
        main {
            min-height: 80vh;
            padding: 2rem 0;
        }
        article {
            background: rgba(25, 35, 60, 0.8);
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
            margin-bottom: 3rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #ffcc00;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-shadow: 0 2px 4px rgba(0,0,0,0.5);
        }
        h2 {
            font-size: 2rem;
            color: #4da8ff;
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #2d3e5a;
        }
        h3 {
            font-size: 1.6rem;
            color: #a3d5ff;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #b0c4de;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.2rem;
        }
        blockquote {
            font-style: italic;
            color: #ccc;
            border-left: 4px solid #ff9800;
            padding-left: 1.5rem;
            margin: 2rem 0;
        }
        .featured-img {
            width: 100%;
            border-radius: 10px;
            border: 3px solid #2d3e5a;
            margin: 2rem auto;
            box-shadow: 0 6px 16px rgba(0,0,0,0.5);
        }
        .interactive-module {
            background: rgba(30, 40, 70, 0.6);
            border-radius: 10px;
            padding: 2rem;
            margin: 3rem 0;
            border: 1px solid #3a506b;
        }
        .module-title {
            color: #ffcc00;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .rating-form, .comment-form {
            display: grid;
            gap: 1rem;
            max-width: 600px;
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            font-size: 1.8rem;
            color: #555;
            cursor: pointer;
        }
        .rating-stars .star {
            transition: color 0.2s;
        }
        .rating-stars .star:hover,
        .rating-stars .star.active {
            color: #ffcc00;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-control {
            padding: 0.8rem;
            border-radius: 6px;
            border: 1px solid #3a506b;
            background: rgba(255,255,255,0.05);
            color: white;
            font-size: 1rem;
        }
        textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background: linear-gradient(to right, #1a73e8, #0d47a1);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 6px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
            max-width: 200px;
        }
        .submit-btn:hover {
            background: linear-gradient(to right, #0d47a1, #1a73e8);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.3);
        }
        footer {
            background: #0a0f1a;
            padding: 3rem 0 1.5rem;
            border-top: 3px solid #1a237e;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: #ffcc00;
            margin-bottom: 1.5rem;
            font-size: 1.4rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        friend-link {
            display: inline-block;
            background: rgba(77, 168, 255, 0.1);
            padding: 0.5rem 1rem;
            border-radius: 5px;
            margin: 0.3rem;
            border: 1px solid #3a506b;
        }
        friend-link a {
            color: #a3d5ff;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #2d3e5a;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .my-logo {
                font-size: 1.8rem;
            }
            .search-form {
                order: 3;
                margin-top: 1rem;
                max-width: 100%;
            }
            .hamburger {
                display: block;
            }
            .nav-desktop {
                display: none;
            }
            .nav-mobile {
                display: none;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            article {
                padding: 1.5rem;
            }
            .interactive-module {
                padding: 1.5rem;
            }
        }