:root {
            --primary: #e10600;
            --secondary: #0a1a2a;
            --accent: #ffcc00;
            --light: #f5f5f5;
            --dark: #111;
            --gray: #666;
            --transition: all 0.3s ease;
            --shadow: 0 5px 15px rgba(0,0,0,0.2);
            --border-radius: 8px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: var(--secondary);
            color: var(--light);
            line-height: 1.8;
            overflow-x: hidden;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #fff;
            text-shadow: 0 0 5px var(--accent);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(to bottom, rgba(10, 26, 42, 0.95), rgba(10, 26, 42, 0.8));
            backdrop-filter: blur(10px);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 2px solid var(--primary);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 3px;
            text-shadow: 2px 2px 0 var(--primary);
            display: flex;
            align-items: center;
        }
        .my-logo i {
            margin-right: 10px;
            color: var(--primary);
        }
        .my-logo:hover {
            color: #fff;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--light);
            font-size: 1.8rem;
            cursor: pointer;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: var(--light);
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
        }
        nav a:hover, nav a.active {
            background-color: var(--primary);
            color: #fff;
        }
        .breadcrumb {
            padding: 1rem 0;
            color: var(--gray);
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .hero {
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://images.unsplash.com/photo-1549399542-7e3f8b79c341?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            padding: 4rem 2rem;
            text-align: center;
            margin-bottom: 3rem;
            border-radius: 0 0 30px 30px;
            box-shadow: var(--shadow);
        }
        .hero h1 {
            font-size: 3.5rem;
            color: var(--accent);
            margin-bottom: 1rem;
            text-shadow: 3px 3px 0 var(--primary);
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto;
            color: #ddd;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin-bottom: 3rem;
        }
        article {
            background: rgba(255,255,255,0.05);
            padding: 2.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            border-left: 5px solid var(--primary);
        }
        h1, h2, h3, h4 {
            color: var(--accent);
            margin-top: 2rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
        }
        h2 {
            font-size: 2.2rem;
            border-bottom: 2px solid var(--primary);
            padding-bottom: 0.5rem;
        }
        h3 {
            font-size: 1.8rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #ff9999;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .highlight {
            background: linear-gradient(90deg, rgba(225,6,0,0.2), transparent);
            padding: 1.5rem;
            border-left: 4px solid var(--primary);
            margin: 2rem 0;
            font-style: italic;
            font-size: 1.2rem;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            display: block;
            margin: 2rem auto;
            border: 3px solid var(--primary);
        }
        .interactive-section {
            background: rgba(10, 26, 42, 0.8);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            background: rgba(255,255,255,0.1);
            border: 1px solid var(--gray);
            border-radius: var(--border-radius);
            color: var(--light);
            font-size: 1rem;
        }
        textarea {
            min-height: 150px;
            resize: vertical;
        }
        button {
            background: linear-gradient(to right, var(--primary), #b90504);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: var(--border-radius);
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
            font-size: 1rem;
        }
        button:hover {
            background: linear-gradient(to right, #ff1c1a, var(--primary));
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(225, 6, 0, 0.4);
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: var(--gray);
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--accent);
        }
        .rating-value {
            font-size: 1.5rem;
            margin-left: 1rem;
            font-weight: bold;
        }
        aside {
            background: rgba(255,255,255,0.05);
            padding: 2rem;
            border-radius: var(--border-radius);
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        .related-links h3 {
            margin-top: 0;
        }
        .related-links ul {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 1rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .related-links a {
            color: var(--light);
            display: block;
            padding: 0.5rem;
            border-radius: 5px;
            transition: var(--transition);
        }
        .related-links a:hover {
            background-color: rgba(225, 6, 0, 0.2);
            padding-left: 1rem;
        }
        .update-info {
            background: rgba(255, 204, 0, 0.1);
            padding: 1rem;
            border-radius: var(--border-radius);
            margin-top: 2rem;
            font-size: 0.9rem;
            text-align: center;
        }
        footer {
            background: var(--dark);
            padding: 3rem 0 1.5rem;
            border-top: 5px solid var(--primary);
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-links h4 {
            color: var(--accent);
            margin-top: 0;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        friend-link {
            display: block;
            padding: 1rem;
            background: rgba(255,255,255,0.05);
            border-radius: var(--border-radius);
            margin: 1rem 0;
            text-align: center;
            font-weight: bold;
            border: 1px dashed var(--accent);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid var(--gray);
            color: var(--gray);
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .mobile-menu-btn {
                display: block;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--secondary);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                box-shadow: var(--shadow);
                border-top: 2px solid var(--primary);
            }
            nav ul.active {
                display: flex;
            }
            nav li {
                margin: 0.5rem 0;
            }
            .hero h1 {
                font-size: 2.5rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            article, aside {
                padding: 1.5rem;
            }
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .key-term {
            background: rgba(255, 204, 0, 0.2);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: bold;
        }
        .tip {
            background: rgba(0, 200, 255, 0.1);
            padding: 1rem;
            border-left: 4px solid #00c8ff;
            margin: 1.5rem 0;
        }