* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #0a0e17;
            color: #e0e0e0;
            line-height: 1.8;
            overflow-x: hidden;
        }
        a {
            color: #4fc3f7;
            text-decoration: none;
            transition: color 0.3s ease, transform 0.2s ease;
        }
        a:hover {
            color: #29b6f6;
            transform: translateY(-1px);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        section {
            padding: 60px 0;
            border-bottom: 1px solid #1e2a3a;
        }
        header {
            background: linear-gradient(135deg, #0c1b2f 0%, #0a0e17 100%);
            padding: 20px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(90deg, #00bcd4, #4caf50);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -1px;
        }
        .logo a:hover {
            background: linear-gradient(90deg, #4caf50, #00bcd4);
            -webkit-background-clip: text;
            background-clip: text;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .nav-links a {
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 12px;
            border-radius: 6px;
        }
        .nav-links a:hover {
            background-color: rgba(79, 195, 247, 0.1);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #4fc3f7;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: #aaa;
        }
        .breadcrumb a {
            color: #aaa;
        }
        .breadcrumb a:hover {
            color: #4fc3f7;
        }
        .hero {
            background: radial-gradient(circle at 30% 20%, #12233a 0%, #0a0e17 70%);
            padding: 80px 0;
            text-align: center;
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            background: linear-gradient(90deg, #00bcd4, #4caf50);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1.2;
        }
        .hero-subtitle {
            font-size: 1.4rem;
            color: #b0bec5;
            max-width: 800px;
            margin: 0 auto 40px;
        }
        h2 {
            font-size: 2.5rem;
            margin-bottom: 30px;
            color: #4fc3f7;
            border-left: 5px solid #4caf50;
            padding-left: 15px;
        }
        h3 {
            font-size: 1.8rem;
            margin: 40px 0 20px;
            color: #81c784;
        }
        h4 {
            font-size: 1.4rem;
            margin: 25px 0 15px;
            color: #b0bec5;
        }
        p {
            margin-bottom: 25px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background-color: rgba(79, 195, 247, 0.1);
            border-left: 4px solid #4fc3f7;
            padding: 20px;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
        }
        .key-point {
            display: flex;
            align-items: center;
            gap: 15px;
            margin: 20px 0;
            padding: 15px;
            background-color: rgba(30, 42, 58, 0.5);
            border-radius: 8px;
        }
        .key-point i {
            color: #4caf50;
            font-size: 1.5rem;
            flex-shrink: 0;
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #aaa;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .quote {
            font-size: 1.3rem;
            color: #ffcc80;
            border-left: 4px solid #ff9800;
            padding-left: 20px;
            margin: 40px 0;
            font-style: italic;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin: 40px 0;
        }
        .feature-card {
            background: linear-gradient(145deg, #15202e, #0d1520);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid #1e2a3a;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
            border-color: #4fc3f7;
        }
        .feature-icon {
            font-size: 2.5rem;
            color: #4fc3f7;
            margin-bottom: 20px;
        }
        .interactive-section {
            background-color: rgba(10, 14, 23, 0.7);
            padding: 40px;
            border-radius: 12px;
            margin: 50px 0;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 20px;
            max-width: 600px;
            margin: 0 auto;
        }
        input, textarea, select {
            padding: 15px;
            border-radius: 8px;
            border: 1px solid #2a3a50;
            background-color: #0f1726;
            color: #e0e0e0;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #4fc3f7;
        }
        button {
            padding: 15px 30px;
            background: linear-gradient(90deg, #00bcd4, #4caf50);
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: bold;
            font-size: 1.1rem;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.3s;
        }
        button:hover {
            transform: scale(1.03);
            box-shadow: 0 5px 15px rgba(0, 188, 212, 0.4);
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 10px;
            font-size: 2rem;
            margin: 20px 0;
        }
        .star-rating i {
            color: #555;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: #ffc107;
        }
        footer {
            background-color: #050a12;
            padding: 60px 0 30px;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-links h4 {
            color: #4fc3f7;
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        friend-link {
            display: block;
            margin: 15px 0;
            padding: 10px;
            background-color: rgba(30, 42, 58, 0.3);
            border-radius: 6px;
            transition: background-color 0.3s;
        }
        friend-link:hover {
            background-color: rgba(79, 195, 247, 0.1);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #1e2a3a;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .hero h1 {
                font-size: 2.8rem;
            }
            h2 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: 80px;
                right: -100%;
                flex-direction: column;
                background-color: #0c1b2f;
                width: 80%;
                max-width: 300px;
                height: calc(100vh - 80px);
                padding: 40px 20px;
                transition: right 0.5s ease;
                box-shadow: -5px 0 15px rgba(0,0,0,0.5);
                z-index: 999;
            }
            .nav-links.active {
                right: 0;
            }
            .hero h1 {
                font-size: 2.3rem;
            }
            .hero-subtitle {
                font-size: 1.2rem;
            }
            h2 {
                font-size: 2rem;
            }
            section {
                padding: 40px 0;
            }
            .interactive-section {
                padding: 25px;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 2rem;
            }
            .container {
                padding: 0 15px;
            }
        }