* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #0f1419;
            color: #e0e0e0;
            line-height: 1.6;
            overflow-x: hidden;
        }
        a {
            color: #4dabf7;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #ff6b6b;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a1f2e 0%, #0a0e15 100%);
            padding: 1rem 0;
            border-bottom: 2px solid #2a3a5a;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: bold;
            color: #ffa500;
            text-shadow: 0 0 10px rgba(255, 165, 0, 0.5);
            letter-spacing: 1px;
        }
        .my-logo:hover {
            color: #ffcc00;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.5rem;
        }
        .nav-links li a {
            padding: 0.5rem 1rem;
            border-radius: 5px;
            font-weight: 600;
        }
        .nav-links li a:hover {
            background-color: #2a3a5a;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: #ffa500;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #141a24;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #8fa3c9;
        }
        .breadcrumb a:hover {
            color: #ffa500;
        }
        main {
            padding: 2rem 0;
        }
        article {
            background-color: #1a202c;
            border-radius: 10px;
            padding: 2rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
            margin-bottom: 2rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #ffa500;
            margin-bottom: 1.5rem;
            border-left: 5px solid #ff6b6b;
            padding-left: 1rem;
        }
        h2 {
            font-size: 2.2rem;
            color: #4dabf7;
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #2a3a5a;
        }
        h3 {
            font-size: 1.8rem;
            color: #8fa3c9;
            margin: 1.5rem 0 0.8rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #b0b8d0;
            margin: 1.2rem 0 0.6rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .highlight {
            background-color: #2a3a5a;
            padding: 1rem;
            border-left: 4px solid #ffa500;
            margin: 1.5rem 0;
            border-radius: 5px;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .image-container {
            text-align: center;
            margin: 2rem 0;
        }
        .image-container img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            border: 3px solid #4dabf7;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.7);
            transition: transform 0.3s ease;
        }
        .image-container img:hover {
            transform: scale(1.02);
        }
        .function-section {
            background-color: #141a24;
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .function-box {
            background: linear-gradient(145deg, #1e2533, #171d28);
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
        }
        .function-box h3 {
            color: #ffa500;
            margin-top: 0;
        }
        .function-box form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .function-box input, .function-box textarea, .function-box select {
            padding: 0.8rem;
            border: 1px solid #4dabf7;
            border-radius: 5px;
            background-color: #0f1419;
            color: #e0e0e0;
            font-size: 1rem;
        }
        .function-box button {
            padding: 0.8rem;
            background-color: #ff6b6b;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-weight: bold;
            transition: background-color 0.3s ease;
        }
        .function-box button:hover {
            background-color: #ff5252;
        }
        footer {
            background-color: #0a0e15;
            padding: 3rem 0 1.5rem;
            border-top: 2px solid #2a3a5a;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #ffa500;
            margin-bottom: 1rem;
        }
        friend-link {
            display: block;
            padding: 0.5rem 0;
            color: #8fa3c9;
            border-bottom: 1px dotted #2a3a5a;
        }
        friend-link:hover {
            color: #ffa500;
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2a3a5a;
            color: #8fa3c9;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: #1a1f2e;
                padding: 1rem;
                box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
            }
            .nav-links.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .function-section {
                grid-template-columns: 1fr;
            }
        }