:root {
            --primary-dark: #1a1a2e;
            --secondary-dark: #16213e;
            --accent-orange: #f77f00;
            --accent-purple: #7209b7;
            --text-light: #e6e6e6;
            --text-muted: #b0b0b0;
            --card-bg: #0f3460;
            --hover-glow: rgba(247, 127, 0, 0.3);
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            --border-radius: 12px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--primary-dark);
            color: var(--text-light);
            line-height: 1.8;
            background-image: radial-gradient(circle at 20% 30%, var(--secondary-dark) 0%, transparent 20%),
                              radial-gradient(circle at 80% 80%, var(--accent-purple) 0%, transparent 15%);
            min-height: 100vh;
        }
        a {
            color: var(--accent-orange);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #ff9e40;
            text-shadow: 0 0 8px var(--hover-glow);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: rgba(22, 33, 62, 0.95);
            backdrop-filter: blur(10px);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 2px solid var(--accent-purple);
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(90deg, var(--accent-orange), var(--accent-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 1px;
        }
        .logo a:hover {
            text-shadow: 0 0 15px rgba(247, 127, 0, 0.5);
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            font-size: 1.1rem;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 6px;
        }
        nav a:hover {
            background-color: rgba(247, 127, 0, 0.1);
            transform: translateY(-3px);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--accent-orange);
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--accent-orange);
        }
        main {
            padding: 2rem 0;
        }
        article {
            background-color: rgba(15, 52, 96, 0.7);
            border-radius: var(--border-radius);
            padding: 2.5rem;
            margin-bottom: 2rem;
            box-shadow: var(--shadow);
            border-left: 5px solid var(--accent-orange);
        }
        h1 {
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            color: #fff;
            line-height: 1.3;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
        }
        h2 {
            font-size: 2rem;
            margin: 2.5rem 0 1rem;
            color: var(--accent-orange);
            border-bottom: 2px solid var(--accent-purple);
            padding-bottom: 0.5rem;
        }
        h3 {
            font-size: 1.5rem;
            margin: 2rem 0 1rem;
            color: #ffb347;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .highlight {
            background-color: rgba(114, 9, 183, 0.2);
            border-left: 4px solid var(--accent-purple);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .feature-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            border: 3px solid var(--accent-orange);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.7);
        }
        .interactive-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .card {
            background-color: var(--card-bg);
            padding: 2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid rgba(247, 127, 0, 0.2);
        }
        .card:hover {
            transform: translateY(-10px);
            border-color: var(--accent-orange);
            box-shadow: 0 15px 35px rgba(247, 127, 0, 0.2);
        }
        .card h3 {
            margin-top: 0;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        input, textarea, select {
            padding: 0.8rem 1rem;
            border-radius: 8px;
            border: 1px solid #444;
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--text-light);
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px var(--hover-glow);
        }
        button {
            background: linear-gradient(135deg, var(--accent-orange), var(--accent-purple));
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
            font-size: 1.1rem;
        }
        button:hover {
            transform: scale(1.05);
            box-shadow: 0 5px 20px rgba(247, 127, 0, 0.4);
        }
        .rating {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 1.8rem;
            color: #444;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: gold;
            text-shadow: 0 0 10px gold;
        }
        .comments {
            margin-top: 3rem;
        }
        .comment {
            background-color: rgba(255, 255, 255, 0.05);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin-bottom: 1.5rem;
            border-left: 3px solid var(--accent-purple);
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            padding: 3rem 0;
        }
        .web-link {
            background-color: rgba(15, 52, 96, 0.5);
            padding: 1.2rem;
            border-radius: 8px;
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: rgba(247, 127, 0, 0.1);
            transform: translateX(5px);
        }
        .web-link a {
            color: var(--text-light);
            display: block;
        }
        .web-link a:hover {
            color: var(--accent-orange);
        }
        footer {
            background-color: var(--secondary-dark);
            padding: 2rem 0;
            text-align: center;
            border-top: 2px solid var(--accent-purple);
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.3rem; }
            h2 { font-size: 1.8rem; }
            nav ul { gap: 1rem; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            nav ul {
                position: fixed;
                top: 80px;
                left: -100%;
                flex-direction: column;
                background-color: var(--secondary-dark);
                width: 100%;
                text-align: center;
                padding: 2rem 0;
                gap: 1.5rem;
                transition: var(--transition);
                box-shadow: var(--shadow);
                z-index: 999;
            }
            nav ul.active {
                left: 0;
            }
            .header-container {
                padding: 0 1rem;
            }
            article {
                padding: 1.5rem;
            }
            .interactive-section {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            h1 { font-size: 1.9rem; }
            .logo a { font-size: 1.6rem; }
            .card { padding: 1.5rem; }
        }
        .emoji {
            font-size: 1.2em;
            margin: 0 3px;
        }
        .section-divider {
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--accent-orange), var(--accent-purple), transparent);
            margin: 3rem 0;
            border: none;
        }
        .key-term {
            font-weight: bold;
            color: var(--accent-orange);
            border-bottom: 1px dashed var(--accent-orange);
        }