* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #0a0f2b;
            color: #e0e0ff;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: #4fc3f7;
            text-decoration: none;
            transition: color 0.3s ease, text-shadow 0.3s ease;
        }
        a:hover {
            color: #ffcc00;
            text-shadow: 0 0 5px rgba(255, 204, 0, 0.5);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        section {
            padding: 40px 0;
        }
        header {
            background: linear-gradient(135deg, #1a237e 0%, #311b92 100%);
            padding: 15px 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: 1.8rem;
            font-weight: 800;
            color: #ffcc00;
            text-transform: uppercase;
            letter-spacing: 1px;
            background: linear-gradient(to right, #ffcc00, #ff9100);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo a:hover {
            background: linear-gradient(to right, #ff9100, #ffcc00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        nav ul li a {
            font-weight: 600;
            font-size: 1rem;
            padding: 8px 5px;
            position: relative;
        }
        nav ul li a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: 0;
            left: 0;
            background-color: #ffcc00;
            transition: width 0.3s ease;
        }
        nav ul li a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: #ffcc00;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: #aaaacc;
            background-color: rgba(26, 35, 126, 0.3);
            margin-top: 5px;
        }
        .breadcrumb a {
            color: #aaaacc;
        }
        .breadcrumb a:hover {
            color: #ffcc00;
        }
        .breadcrumb span {
            margin: 0 8px;
        }
        .hero {
            background: radial-gradient(circle at center, #1a237e 0%, #0a0f2b 70%);
            text-align: center;
            padding: 60px 20px;
            border-bottom: 3px solid #ffcc00;
        }
        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 20px;
            color: #ffffff;
            text-shadow: 0 0 10px rgba(79, 195, 247, 0.5);
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 30px;
            color: #ccd5ff;
        }
        .highlight {
            color: #ffcc00;
            font-weight: bold;
        }
        .content-section {
            background-color: rgba(255, 255, 255, 0.03);
            border-radius: 12px;
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .content-section:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
        }
        h2 {
            font-size: 2.3rem;
            color: #4fc3f7;
            margin-bottom: 20px;
            border-left: 5px solid #ffcc00;
            padding-left: 15px;
        }
        h3 {
            font-size: 1.8rem;
            color: #80deea;
            margin: 25px 0 15px;
        }
        h4 {
            font-size: 1.4rem;
            color: #b3e5fc;
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .article-image {
            width: 80%;
            max-width: 700px;
            margin: 30px auto;
            border-radius: 10px;
            overflow: hidden;
            border: 3px solid #311b92;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
        }
        .article-image img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .article-image img:hover {
            transform: scale(1.03);
        }
        .caption {
            text-align: center;
            font-style: italic;
            color: #aaaacc;
            padding: 10px;
            font-size: 0.9rem;
        }
        .key-term {
            background-color: rgba(255, 204, 0, 0.15);
            border-left: 4px solid #ffcc00;
            padding: 15px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
        blockquote {
            border-left: 5px solid #4fc3f7;
            padding-left: 25px;
            margin: 25px 0;
            font-style: italic;
            color: #ccd5ff;
            background-color: rgba(79, 195, 247, 0.05);
            padding: 20px;
            border-radius: 0 8px 8px 0;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 20px;
        }
        li {
            margin-bottom: 10px;
        }
        .interactive-box {
            background: linear-gradient(145deg, #1e2a78, #0d1440);
            padding: 25px;
            border-radius: 10px;
            border: 1px solid #4fc3f7;
            margin: 25px 0;
        }
        .interactive-box h4 {
            color: #ffcc00;
        }
        .form-container {
            background-color: rgba(26, 35, 126, 0.4);
            padding: 25px;
            border-radius: 10px;
            margin-top: 30px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #b3e5fc;
        }
        input, textarea, select {
            width: 100%;
            padding: 12px;
            background-color: rgba(255, 255, 255, 0.1);
            border: 1px solid #4fc3f7;
            border-radius: 6px;
            color: white;
            font-size: 1rem;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #ffcc00;
            box-shadow: 0 0 8px rgba(255, 204, 0, 0.5);
        }
        button {
            background: linear-gradient(to right, #4fc3f7, #311b92);
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 6px;
            font-weight: bold;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        button:hover {
            background: linear-gradient(to right, #311b92, #4fc3f7);
            box-shadow: 0 0 15px rgba(79, 195, 247, 0.7);
        }
        .rating-container {
            text-align: center;
            padding: 20px;
            background-color: rgba(255, 204, 0, 0.05);
            border-radius: 10px;
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 15px 0;
        }
        .star-rating i {
            font-size: 2rem;
            color: #555;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating i.active {
            color: #ffcc00;
        }
        footer {
            background: linear-gradient(to bottom, #1a237e, #0a0f2b);
            padding: 40px 0 20px;
            margin-top: 50px;
            border-top: 2px solid #4fc3f7;
        }
        .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;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            margin-bottom: 8px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #3949ab;
            color: #aaaacc;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .hero h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
        }
        @media (max-width: 768px) {
            nav ul {
                flex-direction: column;
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                background-color: #1a237e;
                padding: 20px;
                transition: left 0.5s ease;
                box-shadow: 0 10px 15px rgba(0,0,0,0.3);
                z-index: 999;
            }
            nav ul.active {
                left: 0;
            }
            .hamburger {
                display: block;
            }
            .header-content {
                flex-wrap: wrap;
            }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .content-section {
                padding: 20px;
            }
        }