* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #0a0a2a;
            color: #f0f0f0;
            line-height: 1.6;
            overflow-x: hidden;
        }
        a {
            color: #00a8ff;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #00fff7;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        header {
            background: linear-gradient(135deg, #001f3f, #003366);
            padding: 20px 0;
            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;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 2.5rem;
            font-weight: bold;
            color: #00fff7;
            text-transform: uppercase;
            letter-spacing: 2px;
            text-shadow: 0 0 10px #00a8ff;
        }
        .logo a {
            color: inherit;
            text-decoration: none;
        }
        .logo a:hover {
            text-shadow: 0 0 15px #00fff7;
        }
        .menu-toggle {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #00fff7;
            background: none;
            border: none;
        }
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .nav-menu li a {
            font-size: 1.1rem;
            padding: 10px 15px;
            border-radius: 5px;
            background: rgba(0, 40, 80, 0.7);
        }
        .nav-menu li a:hover {
            background: #0056b3;
            color: #fff;
        }
        .breadcrumb {
            margin-top: 15px;
            font-size: 0.9rem;
            color: #aaa;
        }
        .breadcrumb a {
            color: #00a8ff;
        }
        .breadcrumb a:hover {
            color: #00fff7;
        }
        main {
            padding: 30px 0;
            background: #0d0d3d;
            border-radius: 10px;
            margin-top: 20px;
            box-shadow: 0 0 20px rgba(0, 100, 255, 0.2);
        }
        article {
            padding: 20px;
        }
        h1, h2, h3 {
            color: #00fff7;
            margin-bottom: 15px;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            text-align: center;
            margin-bottom: 25px;
            text-shadow: 0 0 10px #00a8ff;
        }
        h2 {
            font-size: 2.2rem;
            margin-top: 30px;
            border-left: 5px solid #00a8ff;
            padding-left: 15px;
        }
        h3 {
            font-size: 1.8rem;
            margin-top: 20px;
            color: #00a8ff;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
            padding: 0 10px;
        }
        .highlight {
            background: rgba(0, 168, 255, 0.1);
            border-left: 4px solid #00fff7;
            padding: 15px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .feature-img {
            width: 80%;
            margin: 25px auto;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.7);
            border: 3px solid #00a8ff;
        }
        .feature-img img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .feature-img img:hover {
            transform: scale(1.03);
        }
        .functional-section {
            background: #1a1a5a;
            padding: 25px;
            border-radius: 12px;
            margin: 30px 0;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
        }
        .functional-section h2 {
            border-left: none;
            text-align: center;
            color: #00fff7;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 15px;
            max-width: 600px;
            margin: 0 auto;
        }
        input, textarea, select {
            padding: 12px;
            border: 2px solid #00a8ff;
            border-radius: 8px;
            background: #0a0a2a;
            color: #f0f0f0;
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #00fff7;
            box-shadow: 0 0 10px rgba(0, 255, 247, 0.5);
        }
        button {
            padding: 12px 25px;
            background: linear-gradient(90deg, #00a8ff, #00fff7);
            color: #0a0a2a;
            border: none;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        button:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(0, 255, 247, 0.4);
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 10px;
            font-size: 2rem;
            color: #ffd700;
            margin: 15px 0;
        }
        .star-rating i {
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .star-rating i:hover {
            color: #ffaa00;
        }
        footer {
            background: #001f3f;
            padding: 40px 0 20px;
            margin-top: 40px;
            border-top: 3px solid #00a8ff;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-section h3 {
            color: #00fff7;
            margin-bottom: 20px;
            font-size: 1.5rem;
        }
        friend-link {
            display: block;
            font-style: italic;
            color: #aaa;
            margin-bottom: 10px;
        }
        .friend-links {
            list-style: none;
        }
        .friend-links li {
            margin-bottom: 10px;
        }
        .friend-links a {
            color: #00a8ff;
            padding: 5px;
            display: inline-block;
            border-radius: 4px;
        }
        .friend-links a:hover {
            background: rgba(0, 168, 255, 0.2);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #0056b3;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                align-items: flex-start;
            }
            .menu-toggle {
                display: block;
                position: absolute;
                top: 25px;
                right: 20px;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 15px;
                background: #002b5c;
                border-radius: 8px;
                padding: 15px;
            }
            .nav-menu.active {
                display: flex;
            }
            .nav-menu li {
                width: 100%;
                text-align: center;
            }
            .nav-menu li a {
                display: block;
                padding: 12px;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .feature-img {
                width: 95%;
            }
            .functional-section {
                padding: 20px;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .container {
                width: 95%;
            }
            .nav-menu {
                gap: 15px;
            }
        }
        .text-center {
            text-align: center;
        }
        .bold {
            font-weight: bold;
            color: #00fff7;
        }
        .italic {
            font-style: italic;
            color: #aaa;
        }
        .spacer {
            height: 30px;
        }