* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #0f1419;
            color: #e0e0e0;
            line-height: 1.6;
            overflow-x: hidden;
        }
        a {
            color: #00a8ff;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #ff6b6b;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a1f2e, #0c0f16);
            padding: 20px 0;
            border-bottom: 3px solid #00a8ff;
            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: 900;
            color: #ff6b6b;
            text-transform: uppercase;
            letter-spacing: 2px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .logo a {
            color: inherit;
        }
        .logo span {
            color: #00a8ff;
        }
        .nav-toggle {
            display: none;
            font-size: 1.8rem;
            color: #e0e0e0;
            cursor: pointer;
            background: none;
            border: none;
        }
        .nav-menu {
            display: flex;
            gap: 30px;
            list-style: none;
        }
        .nav-menu li a {
            font-size: 1.1rem;
            font-weight: 600;
            padding: 10px 15px;
            border-radius: 5px;
            transition: background 0.3s ease;
        }
        .nav-menu li a:hover {
            background: rgba(0, 168, 255, 0.2);
        }
        .breadcrumb {
            margin-top: 15px;
            font-size: 0.9rem;
            color: #aaa;
        }
        .breadcrumb a {
            color: #aaa;
        }
        .breadcrumb a:hover {
            color: #00a8ff;
        }
        main {
            padding: 40px 0;
            background: #151a23;
        }
        .article-header {
            text-align: center;
            margin-bottom: 40px;
            padding: 20px;
            background: rgba(255, 107, 107, 0.1);
            border-radius: 10px;
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: #00a8ff;
            margin-bottom: 15px;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.7);
        }
        .article-header p {
            font-size: 1.2rem;
            color: #ccc;
            max-width: 800px;
            margin: 0 auto;
        }
        .content-section {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
        }
        .article-content {
            background: #1a1f2e;
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
        }
        .article-content h2 {
            font-size: 2rem;
            color: #ff6b6b;
            margin: 30px 0 15px;
            border-left: 5px solid #00a8ff;
            padding-left: 15px;
        }
        .article-content h3 {
            font-size: 1.6rem;
            color: #00a8ff;
            margin: 25px 0 10px;
        }
        .article-content p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            color: #d0d0d0;
            line-height: 1.8;
        }
        .article-content ul, .article-content ol {
            margin-left: 30px;
            margin-bottom: 20px;
        }
        .article-content li {
            margin-bottom: 10px;
            color: #d0d0d0;
        }
        .highlight {
            background: rgba(0, 168, 255, 0.1);
            padding: 20px;
            border-radius: 10px;
            border-left: 4px solid #ff6b6b;
            margin: 25px 0;
        }
        .featured-image {
            margin: 30px 0;
            text-align: center;
        }
        .featured-image img {
            border-radius: 10px;
            border: 3px solid #00a8ff;
            box-shadow: 0 8px 20px rgba(0,0,0,0.5);
        }
        .image-caption {
            margin-top: 10px;
            font-style: italic;
            color: #aaa;
            font-size: 0.95rem;
        }
        .interactive-features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin: 50px 0;
        }
        .feature-box {
            background: #1a1f2e;
            padding: 25px;
            border-radius: 10px;
            border: 2px solid #00a8ff;
            text-align: center;
        }
        .feature-box h3 {
            color: #ff6b6b;
            margin-bottom: 20px;
            font-size: 1.5rem;
        }
        .feature-box form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .feature-box input, .feature-box textarea, .feature-box select {
            padding: 12px;
            border-radius: 5px;
            border: 1px solid #444;
            background: #0f1419;
            color: #e0e0e0;
            font-size: 1rem;
        }
        .feature-box textarea {
            min-height: 120px;
            resize: vertical;
        }
        .feature-box button {
            padding: 12px 20px;
            background: linear-gradient(90deg, #00a8ff, #0097e6);
            color: white;
            border: none;
            border-radius: 5px;
            font-size: 1rem;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.3s ease, background 0.3s ease;
        }
        .feature-box button:hover {
            background: linear-gradient(90deg, #0097e6, #00a8ff);
            transform: translateY(-3px);
        }
        .rating-stars {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-bottom: 15px;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 2rem;
            color: #555;
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .rating-stars label:hover,
        .rating-stars input:checked ~ label {
            color: #ffd700;
        }
        .related-links {
            margin: 40px 0;
            padding: 25px;
            background: rgba(255, 107, 107, 0.05);
            border-radius: 10px;
        }
        .related-links h3 {
            color: #00a8ff;
            margin-bottom: 20px;
            font-size: 1.8rem;
        }
        .links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
        }
        .links-grid a {
            display: block;
            padding: 12px;
            background: #1a1f2e;
            border-radius: 5px;
            text-align: center;
            transition: background 0.3s ease;
        }
        .links-grid a:hover {
            background: #252b3d;
        }
        footer {
            background: #0c0f16;
            padding: 40px 0 20px;
            border-top: 3px solid #ff6b6b;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-section h4 {
            color: #00a8ff;
            font-size: 1.5rem;
            margin-bottom: 20px;
        }
        .footer-section p {
            color: #aaa;
            line-height: 1.6;
        }
        friend-link {
            display: block;
            margin: 20px 0;
            padding: 15px;
            background: #1a1f2e;
            border-radius: 8px;
        }
        friend-link h4 {
            color: #ff6b6b;
            margin-bottom: 15px;
        }
        .friend-links a {
            display: block;
            padding: 8px 0;
            border-bottom: 1px solid #333;
            color: #aaa;
        }
        .friend-links a:hover {
            color: #00a8ff;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #333;
            color: #777;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #1a1f2e;
                position: absolute;
                top: 100%;
                left: 0;
                padding: 20px;
                border-top: 2px solid #00a8ff;
            }
            #nav-check:checked ~ .nav-menu {
                display: flex;
            }
            .nav-menu li {
                margin: 10px 0;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            .article-content h2 {
                font-size: 1.8rem;
            }
            .article-content h3 {
                font-size: 1.4rem;
            }
            .interactive-features {
                grid-template-columns: 1fr;
            }
            .logo {
                font-size: 2rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }
            .article-header h1 {
                font-size: 1.8rem;
            }
            .article-content {
                padding: 20px;
            }
            .feature-box {
                padding: 20px;
            }
        }
        .btn-hover {
            position: relative;
            overflow: hidden;
        }
        .btn-hover::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 0;
            height: 0;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            transition: width 0.5s, height 0.5s, top 0.5s, left 0.5s;
        }
        .btn-hover:hover::after {
            width: 300px;
            height: 300px;
            top: -150px;
            left: -150px;
        }
        .fade-in {
            animation: fadeIn 1s ease-out;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }