* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            overflow-x: hidden;
        }
        a {
            color: #d32f2f;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #9a0007;
        }
        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, #0c0c0c 0%, #2a2a2a 100%);
            color: #fff;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2rem;
            font-weight: 800;
            color: #ffd700;
            text-transform: uppercase;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
        }
        .logo i {
            margin-right: 10px;
            color: #d32f2f;
        }
        nav ul {
            display: flex;
            list-style: none;
        }
        nav ul li {
            margin-left: 2rem;
        }
        nav ul li a {
            color: #fff;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
        }
        nav ul li a:hover {
            color: #ffd700;
        }
        nav ul li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #ffd700;
            transition: width 0.3s ease;
        }
        nav ul li a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #fff;
        }
        .breadcrumb {
            background: #e9ecef;
            padding: 1rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
        }
        .breadcrumb ul li {
            margin-right: 0.5rem;
        }
        .breadcrumb ul li:not(:last-child)::after {
            content: '>';
            margin-left: 0.5rem;
            color: #666;
        }
        .breadcrumb a {
            color: #666;
        }
        .breadcrumb a:hover {
            color: #d32f2f;
        }
        main {
            padding: 2rem 0;
            background: #fff;
        }
        article {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 20px;
        }
        h1 {
            font-size: 2.8rem;
            color: #0c0c0c;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-align: center;
        }
        h2 {
            font-size: 2rem;
            color: #d32f2f;
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #ffd700;
        }
        h3 {
            font-size: 1.6rem;
            color: #2a2a2a;
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background: #fff9c4;
            padding: 1.5rem;
            border-left: 5px solid #ffd700;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .code-list {
            background: #f5f5f5;
            border: 2px dashed #d32f2f;
            padding: 2rem;
            border-radius: 12px;
            margin: 2rem 0;
        }
        .code-list h3 {
            color: #d32f2f;
            margin-top: 0;
        }
        .code-item {
            background: #fff;
            padding: 1rem;
            margin-bottom: 1rem;
            border-radius: 8px;
            box-shadow: 0 3px 6px rgba(0,0,0,0.1);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .code {
            font-family: monospace;
            font-size: 1.5rem;
            font-weight: bold;
            color: #0c0c0c;
            letter-spacing: 2px;
        }
        .copy-btn {
            background: #d32f2f;
            color: #fff;
            border: none;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        .copy-btn:hover {
            background: #9a0007;
        }
        .image-container {
            margin: 2.5rem 0;
            text-align: center;
        }
        .image-container img {
            border-radius: 12px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
            max-height: 500px;
            object-fit: cover;
            width: 100%;
        }
        .caption {
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .search-box {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: 12px;
            margin: 2rem 0;
            text-align: center;
        }
        .search-box form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-box input {
            flex: 1;
            padding: 0.8rem 1rem;
            border: 2px solid #d32f2f;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
            outline: none;
        }
        .search-box button {
            background: #d32f2f;
            color: #fff;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-size: 1.2rem;
            transition: background 0.3s ease;
        }
        .search-box button:hover {
            background: #9a0007;
        }
        .comment-section, .rating-section {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: 12px;
            margin: 2rem 0;
        }
        .comment-section h3, .rating-section h3 {
            margin-top: 0;
        }
        textarea, input[type="text"], input[type="email"] {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
        }
        .submit-btn {
            background: #d32f2f;
            color: #fff;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s ease;
        }
        .submit-btn:hover {
            background: #9a0007;
        }
        .star-rating {
            display: flex;
            justify-content: center;
            margin: 1rem 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ccc;
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #ffd700;
        }
        .footer-links {
            background: #2a2a2a;
            padding: 3rem 0;
        }
        .web-link {
            background: #3a3a3a;
            margin-bottom: 1rem;
            padding: 1rem;
            border-radius: 8px;
            transition: transform 0.3s ease, background 0.3s ease;
        }
        .web-link:hover {
            background: #4a4a4a;
            transform: translateX(10px);
        }
        .web-link a {
            color: #ffd700;
            font-size: 1.1rem;
            display: block;
        }
        .web-link a:hover {
            color: #fff;
        }
        footer {
            background: #0c0c0c;
            color: #fff;
            padding: 2rem 0;
            text-align: center;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        .copyright {
            margin-top: 1rem;
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.4rem; }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            .logo {
                margin-bottom: 1rem;
            }
            nav ul {
                flex-direction: column;
                width: 100%;
                display: none;
            }
            nav ul.active {
                display: flex;
            }
            nav ul li {
                margin: 0;
                border-bottom: 1px solid #444;
            }
            nav ul li a {
                display: block;
                padding: 1rem;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 1.5rem;
                right: 20px;
            }
            .search-box form {
                flex-direction: column;
            }
            .search-box input {
                border-radius: 8px;
                margin-bottom: 0.5rem;
            }
            .search-box button {
                border-radius: 8px;
                padding: 0.8rem;
            }
            .code-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .code {
                margin-bottom: 1rem;
            }
        }
        @media print {
            header, nav, .search-box, .comment-section, .rating-section, .footer-links, footer {
                display: none;
            }
            body {
                background: #fff;
                color: #000;
            }
            a {
                color: #000;
                text-decoration: underline;
            }
        }