* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #f0f0f0;
            background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
            min-height: 100vh;
        }
        a {
            color: #00d4ff;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #ffcc00;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: rgba(15, 32, 39, 0.95);
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: bold;
            color: #00d4ff;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            color: #ffcc00;
        }
        nav ul {
            list-style: none;
            display: flex;
            gap: 25px;
        }
        nav ul li a {
            font-size: 1.1rem;
            padding: 8px 15px;
            border-radius: 5px;
            background: rgba(32, 58, 67, 0.8);
        }
        nav ul li a:hover {
            background: #00d4ff;
            color: #0f2027;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #00d4ff;
        }
        .breadcrumb {
            padding: 10px 0;
            background: rgba(32, 58, 67, 0.7);
            margin-top: 10px;
            border-radius: 5px;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            padding-left: 20px;
        }
        .breadcrumb li {
            margin-right: 10px;
        }
        .breadcrumb li:after {
            content: '›';
            margin-left: 10px;
            color: #00d4ff;
        }
        .breadcrumb li:last-child:after {
            content: '';
        }
        main {
            padding: 30px 0;
        }
        article {
            background: rgba(44, 83, 100, 0.9);
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
            margin-bottom: 30px;
        }
        h1 {
            font-size: 2.8rem;
            color: #ffcc00;
            margin-bottom: 20px;
            text-align: center;
            text-shadow: 2px 2px 4px #000;
        }
        h2 {
            font-size: 2.2rem;
            color: #00d4ff;
            margin-top: 30px;
            margin-bottom: 15px;
            border-left: 5px solid #ffcc00;
            padding-left: 15px;
        }
        h3 {
            font-size: 1.8rem;
            color: #00ffaa;
            margin-top: 25px;
            margin-bottom: 10px;
        }
        h4 {
            font-size: 1.5rem;
            color: #ccff00;
            margin-top: 20px;
            margin-bottom: 10px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
            padding: 0 10px;
        }
        .highlight {
            background: rgba(255, 204, 0, 0.2);
            padding: 15px;
            border-left: 4px solid #ffcc00;
            margin: 20px 0;
            border-radius: 0 10px 10px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin: 30px 0;
        }
        .feature-box {
            background: rgba(15, 32, 39, 0.8);
            padding: 20px;
            border-radius: 10px;
            text-align: center;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .feature-box:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 20px rgba(0, 212, 255, 0.3);
        }
        .feature-box i {
            font-size: 3rem;
            color: #00d4ff;
            margin-bottom: 15px;
        }
        form {
            background: rgba(32, 58, 67, 0.8);
            padding: 25px;
            border-radius: 10px;
            margin: 25px 0;
        }
        form h3 {
            color: #ffcc00;
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            color: #00ffaa;
            font-weight: bold;
        }
        input, textarea, select {
            width: 100%;
            padding: 12px;
            border: 2px solid #00d4ff;
            border-radius: 5px;
            background: rgba(15, 32, 39, 0.9);
            color: #f0f0f0;
            font-size: 1rem;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #ffcc00;
        }
        button {
            background: linear-gradient(to right, #00d4ff, #00ffaa);
            color: #0f2027;
            border: none;
            padding: 12px 25px;
            border-radius: 5px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        button:hover {
            transform: scale(1.05);
            box-shadow: 0 5px 15px rgba(0, 212, 255, 0.5);
        }
        footer {
            background: #0f2027;
            padding: 40px 0 20px;
            margin-top: 40px;
            border-top: 3px solid #00d4ff;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-section h4 {
            color: #ffcc00;
            margin-bottom: 20px;
        }
        .footer-section ul {
            list-style: none;
        }
        .footer-section ul li {
            margin-bottom: 10px;
        }
        friend-link {
            display: block;
            padding: 10px;
            background: rgba(32, 58, 67, 0.8);
            margin: 10px 0;
            border-radius: 5px;
            text-align: center;
            font-weight: bold;
        }
        friend-link a {
            color: #00ffaa;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #203a43;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(15, 32, 39, 0.98);
                position: absolute;
                top: 80px;
                left: 0;
                padding: 20px;
                border-radius: 0 0 15px 15px;
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
            }
            nav ul.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            p {
                font-size: 1rem;
                padding: 0;
            }
            .features {
                grid-template-columns: 1fr;
            }
        }