* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #0f172a;
            color: #e2e8f0;
            line-height: 1.6;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: #60a5fa;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #93c5fd;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: #1e293b;
            padding: 1rem 0;
            border-bottom: 2px solid #334155;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: bold;
            color: #3b82f6;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            color: #60a5fa;
            text-decoration: none;
        }
        #menu-toggle {
            display: none;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            padding: 10px;
        }
        .hamburger span {
            height: 3px;
            width: 25px;
            background-color: #e2e8f0;
            margin: 4px 0;
            border-radius: 2px;
            transition: 0.3s;
        }
        nav {
            display: flex;
            gap: 2rem;
            align-items: center;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 1.5rem;
        }
        nav a {
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 0.375rem;
        }
        nav a:hover {
            background-color: #334155;
            text-decoration: none;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #1e293b;
            margin-top: 10px;
            border-bottom: 1px solid #334155;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: #94a3b8;
        }
        main {
            flex: 1;
            padding: 2rem 0;
        }
        article {
            background-color: #1e293b;
            border-radius: 0.75rem;
            padding: 2rem;
            margin-bottom: 2rem;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
        }
        h1 {
            font-size: 2.5rem;
            color: #3b82f6;
            margin-bottom: 1.5rem;
            text-align: center;
        }
        h2 {
            font-size: 2rem;
            color: #60a5fa;
            margin: 2rem 0 1rem;
            border-left: 4px solid #3b82f6;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.5rem;
            color: #93c5fd;
            margin: 1.5rem 0 0.75rem;
        }
        h4 {
            font-size: 1.25rem;
            color: #bfdbfe;
            margin: 1.25rem 0 0.5rem;
        }
        p {
            margin-bottom: 1.25rem;
            text-align: justify;
        }
        .highlight {
            background-color: #334155;
            border-left: 4px solid #3b82f6;
            padding: 1rem;
            margin: 1.5rem 0;
            border-radius: 0 0.375rem 0.375rem 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.5rem;
        }
        .article-img {
            width: 100%;
            max-width: 800px;
            margin: 2rem auto;
            border-radius: 0.75rem;
            overflow: hidden;
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
        }
        .article-img img {
            transition: transform 0.5s ease;
        }
        .article-img:hover img {
            transform: scale(1.03);
        }
        .functional-section {
            background-color: #0f172a;
            border: 1px solid #334155;
            border-radius: 0.75rem;
            padding: 2rem;
            margin: 2rem 0;
        }
        .functional-section h2 {
            border-left: none;
            padding-left: 0;
            text-align: center;
        }
        form {
            display: grid;
            gap: 1.5rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        label {
            margin-bottom: 0.5rem;
            font-weight: 500;
        }
        input, textarea, select {
            padding: 0.75rem;
            border: 1px solid #475569;
            border-radius: 0.375rem;
            background-color: #1e293b;
            color: #e2e8f0;
            font-size: 1rem;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #3b82f6;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
        }
        button {
            padding: 0.75rem 1.5rem;
            background-color: #3b82f6;
            color: white;
            border: none;
            border-radius: 0.375rem;
            font-weight: bold;
            cursor: pointer;
            transition: background-color 0.3s ease;
        }
        button:hover {
            background-color: #2563eb;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            justify-content: center;
            margin: 1rem 0;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 2rem;
            color: #94a3b8;
            cursor: pointer;
            transition: color 0.3s;
        }
        .rating-stars input:checked ~ label,
        .rating-stars label:hover,
        .rating-stars label:hover ~ label {
            color: #fbbf24;
        }
        footer {
            background-color: #1e293b;
            padding: 2rem 0;
            border-top: 2px solid #334155;
            margin-top: auto;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: #60a5fa;
            margin-bottom: 1rem;
        }
        friend-link {
            display: block;
            background-color: #0f172a;
            padding: 1rem;
            border-radius: 0.375rem;
            margin-bottom: 0.5rem;
            transition: background-color 0.3s;
        }
        friend-link:hover {
            background-color: #334155;
        }
        .copyright {
            text-align: center;
            padding-top: 1rem;
            border-top: 1px solid #475569;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                align-items: flex-start;
            }
            .hamburger {
                display: flex;
                position: absolute;
                top: 1.5rem;
                right: 20px;
            }
            nav {
                width: 100%;
                display: none;
                flex-direction: column;
                gap: 0;
                margin-top: 1rem;
            }
            nav ul {
                flex-direction: column;
                width: 100%;
                gap: 0;
            }
            nav li {
                width: 100%;
            }
            nav a {
                display: block;
                padding: 1rem;
                border-bottom: 1px solid #334155;
            }
            #menu-toggle:checked ~ nav {
                display: flex;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.75rem;
            }
            article, .functional-section {
                padding: 1.5rem;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        .text-center {
            text-align: center;
        }
        .text-bold {
            font-weight: bold;
            color: #fbbf24;
        }
        .last-updated {
            color: #94a3b8;
            font-style: italic;
            margin-bottom: 2rem;
            text-align: right;
        }