* {
            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: 1.8;
            overflow-x: hidden;
        }
        a {
            color: #00a8ff;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #ffcc00;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a1f2e 0%, #2a2f3e 100%);
            padding: 20px 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.5rem;
            font-weight: 900;
            color: #ffcc00;
            text-transform: uppercase;
            letter-spacing: 2px;
            display: flex;
            align-items: center;
        }
        .logo i {
            margin-right: 10px;
            color: #00a8ff;
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .desktop-nav a {
            font-size: 1.1rem;
            font-weight: 600;
            padding: 10px 15px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .desktop-nav a:hover {
            background-color: #00a8ff;
            color: #0f1419;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: #ffcc00;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: #1a1f2e;
            padding: 20px;
            border-radius: 10px;
            margin-top: 20px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .mobile-nav a {
            padding: 12px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .mobile-nav a:hover {
            background-color: #00a8ff;
            color: #0f1419;
        }
        .breadcrumb {
            margin-top: 15px;
            font-size: 0.9rem;
            color: #aaa;
        }
        .breadcrumb a {
            color: #aaa;
        }
        .breadcrumb a:hover {
            color: #ffcc00;
        }
        main {
            padding: 40px 0;
            background-color: #141a24;
        }
        article {
            background-color: #1e2432;
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7);
            margin-bottom: 40px;
        }
        h1 {
            font-size: 3.5rem;
            color: #ffcc00;
            margin-bottom: 25px;
            text-align: center;
            line-height: 1.2;
        }
        h2 {
            font-size: 2.5rem;
            color: #00a8ff;
            margin: 40px 0 20px;
            border-left: 5px solid #ffcc00;
            padding-left: 15px;
        }
        h3 {
            font-size: 1.8rem;
            color: #e0e0e0;
            margin: 30px 0 15px;
            padding-bottom: 5px;
            border-bottom: 2px solid #2a2f3e;
        }
        p {
            margin-bottom: 25px;
            font-size: 1.1rem;
            text-align: justify;
            color: #cccccc;
        }
        .highlight {
            background-color: #2a2f3e;
            border-left: 4px solid #ffcc00;
            padding: 20px;
            margin: 25px 0;
            border-radius: 8px;
            font-weight: bold;
            color: #ffffff;
        }
        .emoji {
            font-size: 1.2rem;
            margin-right: 8px;
        }
        .image-container {
            text-align: center;
            margin: 40px 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.8);
        }
        .image-container img {
            width: 100%;
            max-width: 800px;
            margin: 0 auto;
        }
        .image-caption {
            font-style: italic;
            color: #aaa;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .function-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin: 50px 0;
        }
        .function-card {
            background: linear-gradient(145deg, #2a2f3e, #1a1f2e);
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.6);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .function-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 168, 255, 0.3);
        }
        .function-card h3 {
            color: #ffcc00;
            border: none;
            margin-top: 0;
        }
        .function-card form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .function-card input, .function-card textarea, .function-card select {
            padding: 15px;
            border: 2px solid #2a2f3e;
            border-radius: 8px;
            background-color: #141a24;
            color: #e0e0e0;
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }
        .function-card input:focus, .function-card textarea:focus, .function-card select:focus {
            outline: none;
            border-color: #00a8ff;
        }
        .function-card button {
            padding: 15px;
            background: linear-gradient(90deg, #00a8ff, #0097e6);
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        .function-card button:hover {
            background: linear-gradient(90deg, #0097e6, #00a8ff);
        }
        .stars {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .star {
            font-size: 2rem;
            color: #2a2f3e;
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .star.active, .star:hover {
            color: #ffcc00;
        }
        footer {
            background-color: #0f1419;
            padding: 50px 0 20px;
            border-top: 3px solid #00a8ff;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }
        .web-link {
            background-color: #1a1f2e;
            padding: 15px;
            border-radius: 8px;
            text-align: center;
            transition: background-color 0.3s ease;
        }
        .web-link:hover {
            background-color: #2a2f3e;
        }
        .web-link a {
            color: #e0e0e0;
            font-weight: 600;
            display: block;
        }
        .copyright {
            text-align: center;
            color: #aaa;
            font-size: 0.9rem;
            padding-top: 20px;
            border-top: 1px solid #2a2f3e;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                align-items: flex-start;
            }
            .desktop-nav {
                display: none;
            }
            .mobile-menu-btn {
                display: block;
                position: absolute;
                top: 30px;
                right: 20px;
            }
            h1 {
                font-size: 2.5rem;
            }
            h2 {
                font-size: 2rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .function-section {
                grid-template-columns: 1fr;
            }
            article {
                padding: 25px;
            }
            .web-links {
                grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
            }
        }
        @media (max-width: 480px) {
            .logo a {
                font-size: 2rem;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            p {
                font-size: 1rem;
            }
        }