:root {
            --primary: #FF9800;
            --primary-dark: #F57C00;
            --secondary: #4CAF50;
            --accent: #FF5722;
            --dark: #222;
            --light: #f8f9fa;
            --gray: #6c757d;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --border-radius: 12px;
            --transition: all 0.3s ease;
            --container-max: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #fff;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-dark);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--border-radius);
        }
        .container {
            width: 95%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 15px;
        }
        header {
            background: linear-gradient(135deg, var(--dark) 0%, #333 100%);
            color: white;
            padding: 1.2rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(to right, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 1px;
        }
        .my-logo a {
            background: none;
            -webkit-text-fill-color: unset;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav ul li a {
            color: white;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            border-bottom: 3px solid transparent;
        }
        nav ul li a:hover, nav ul li a.active {
            color: var(--primary);
            border-color: var(--primary);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--primary);
        }
        .breadcrumb {
            background-color: #f1f1f1;
            padding: 1rem 0;
            font-size: 0.95rem;
            margin-bottom: 2rem;
        }
        .breadcrumb .container {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb i {
            margin: 0 5px;
        }
        .search-bar {
            margin: 2rem auto;
            max-width: 800px;
        }
        .search-form {
            display: flex;
            box-shadow: var(--shadow);
            border-radius: 50px;
            overflow: hidden;
        }
        .search-form input {
            flex: 1;
            padding: 1.2rem 1.8rem;
            border: none;
            font-size: 1.1rem;
            outline: none;
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 2.5rem;
            cursor: pointer;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: var(--primary-dark);
        }
        main {
            padding: 2rem 0 4rem;
        }
        article {
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            padding: 3rem;
            margin-bottom: 3rem;
        }
        h1 {
            font-size: 3.2rem;
            color: var(--dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 8px solid var(--primary);
            padding-left: 1.5rem;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2.5rem;
            padding-bottom: 1.5rem;
            border-bottom: 2px dashed #eee;
            color: var(--gray);
            font-size: 0.95rem;
        }
        .update-time {
            background: #FFF3E0;
            padding: 0.5rem 1rem;
            border-radius: 50px;
            font-weight: 600;
            color: var(--primary-dark);
        }
        h2, h3, h4 {
            color: var(--dark);
            margin-top: 2.5rem;
            margin-bottom: 1.2rem;
            line-height: 1.3;
        }
        h2 {
            font-size: 2.2rem;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 0.5rem;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--primary-dark);
        }
        h4 {
            font-size: 1.4rem;
            color: var(--gray);
        }
        p {
            margin-bottom: 1.8rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.4rem;
            font-weight: 500;
            color: var(--dark);
            background-color: #E8F5E9;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border-left: 5px solid var(--secondary);
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #FFF9C4;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            border-left: 5px solid #FFC107;
        }
        .highlight strong {
            color: #E65100;
        }
        .img-container {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 900px;
        }
        .img-container img {
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .img-container img:hover {
            transform: scale(1.02);
        }
        .caption {
            font-style: italic;
            color: var(--gray);
            margin-top: 0.8rem;
            font-size: 0.95rem;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.8rem;
        }
        li {
            margin-bottom: 0.8rem;
        }
        .internal-links {
            background: #E3F2FD;
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 2.5rem 0;
        }
        .internal-links h3 {
            margin-top: 0;
        }
        .internal-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            list-style: none;
            margin-left: 0;
        }
        .internal-links li a {
            display: block;
            padding: 0.8rem 1.2rem;
            background: white;
            border-radius: 8px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        }
        .internal-links li a:hover {
            background: var(--primary);
            color: white;
        }
        .comment-rating-section {
            margin-top: 4rem;
            border-top: 2px solid #eee;
            padding-top: 3rem;
        }
        .form-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }
        .form-box {
            background: #f9f9f9;
            padding: 2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .form-box h3 {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            margin-top: 0;
        }
        .form-box h3 i {
            color: var(--primary);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.9rem 1.2rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(255,152,0,0.2);
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ddd;
            margin-bottom: 1rem;
        }
        .stars i {
            cursor: pointer;
            transition: var(--transition);
        }
        .stars i:hover,
        .stars i.active {
            color: #FFC107;
        }
        button[type="submit"] {
            background: var(--primary);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: block;
            width: 100%;
        }
        button[type="submit"]:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
        }
        footer {
            background: var(--dark);
            color: #ccc;
            padding: 4rem 0 2rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }
        .footer-logo {
            font-size: 2.5rem;
            font-weight: 800;
            background: linear-gradient(to right, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 1rem;
        }
        .footer-about p {
            font-size: 1rem;
            margin-bottom: 1.5rem;
        }
        .footer-links h4,
        .footer-contact h4 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links ul {
            list-style: none;
            margin-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #aaa;
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin-bottom: 2rem;
            text-align: center;
        }
        friend-link h3 {
            color: white;
            margin-top: 0;
            margin-bottom: 1.5rem;
        }
        friend-link a {
            display: inline-block;
            background: var(--primary);
            color: white;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            margin: 0 0.5rem 1rem;
        }
        friend-link a:hover {
            background: var(--primary-dark);
            transform: scale(1.05);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #444;
            color: #888;
            font-size: 0.95rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.8rem; }
            h2 { font-size: 2rem; }
            article { padding: 2rem; }
            nav ul { gap: 1.5rem; }
        }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            nav { order: 3; width: 100%; margin-top: 1rem; display: none; }
            nav.active { display: block; }
            nav ul { flex-direction: column; gap: 0; }
            nav ul li { border-bottom: 1px solid #444; }
            nav ul li a { display: block; padding: 1rem; }
            .hamburger { display: block; }
            .form-container { grid-template-columns: 1fr; }
            .internal-links ul { grid-template-columns: 1fr; }
        }
        @media (max-width: 576px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            article { padding: 1.5rem; }
            .article-meta { flex-direction: column; align-items: flex-start; }
        }