:root {
            --primary-dark: #2c3e50;
            --primary-light: #34495e;
            --accent-gold: #f1c40f;
            --accent-red: #e74c3c;
            --accent-green: #2ecc71;
            --text-light: #ecf0f1;
            --text-gray: #bdc3c7;
            --bg-light: #f9f9f9;
            --bg-section: #ffffff;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --border-radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: var(--bg-light);
            color: #333;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary-dark);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-gold);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            color: var(--text-light);
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-gold);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            color: var(--text-light);
        }
        .my-logo i {
            font-size: 2.5rem;
        }
        .search-form {
            display: flex;
            flex-grow: 1;
            max-width: 400px;
            margin: 0 30px;
        }
        .search-form input {
            flex-grow: 1;
            padding: 12px 15px;
            border: none;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--accent-gold);
            color: var(--primary-dark);
            border: none;
            padding: 0 20px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-weight: bold;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #e6b90a;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 1.8rem;
            cursor: pointer;
        }
        nav {
            margin-top: 1rem;
        }
        .nav-links {
            display: flex;
            list-style: none;
            justify-content: center;
            flex-wrap: wrap;
            gap: 25px;
        }
        .nav-links a {
            color: var(--text-light);
            font-weight: 600;
            padding: 8px 12px;
            border-radius: var(--border-radius);
        }
        .nav-links a:hover,
        .nav-links a.active {
            background-color: rgba(241, 196, 15, 0.2);
            color: var(--accent-gold);
        }
        .breadcrumb {
            margin-top: 15px;
            font-size: 0.9rem;
            color: var(--text-gray);
        }
        .breadcrumb a {
            color: var(--text-gray);
        }
        .breadcrumb a:hover {
            color: var(--accent-gold);
        }
        main {
            flex: 1;
            padding: 30px 0;
        }
        article {
            background-color: var(--bg-section);
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin-bottom: 30px;
        }
        h1 {
            color: var(--primary-dark);
            font-size: 2.8rem;
            margin-bottom: 20px;
            line-height: 1.2;
            border-left: 5px solid var(--accent-gold);
            padding-left: 15px;
        }
        h2 {
            color: var(--primary-light);
            font-size: 2rem;
            margin: 35px 0 15px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--accent-gold);
        }
        h3 {
            color: var(--primary-light);
            font-size: 1.5rem;
            margin: 25px 0 10px;
        }
        h4 {
            color: var(--primary-light);
            font-size: 1.2rem;
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 18px;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            color: #555;
            background: #f8f9fa;
            padding: 20px;
            border-radius: var(--border-radius);
            margin-bottom: 25px;
            border-left: 4px solid var(--accent-green);
        }
        .highlight {
            background-color: #fffde7;
            padding: 20px;
            border-radius: var(--border-radius);
            border: 1px dashed var(--accent-gold);
            margin: 25px 0;
        }
        .content-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            display: block;
            margin: 25px auto;
            border: 3px solid var(--primary-light);
        }
        .link-list {
            background-color: #f1f8ff;
            padding: 20px;
            border-radius: var(--border-radius);
            margin: 25px 0;
        }
        .link-list h3 {
            margin-top: 0;
        }
        .link-list ul {
            columns: 2;
            list-style-position: inside;
        }
        .link-list li {
            margin-bottom: 8px;
            break-inside: avoid;
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat-card {
            background: linear-gradient(to bottom right, #e3f2fd, #f3e5f5);
            padding: 20px;
            border-radius: var(--border-radius);
            text-align: center;
            box-shadow: var(--shadow);
        }
        .stat-card i {
            font-size: 2.5rem;
            color: var(--primary-light);
            margin-bottom: 10px;
        }
        .stat-card h4 {
            color: var(--accent-red);
            margin: 10px 0;
        }
        .quote {
            font-style: italic;
            border-left: 4px solid var(--accent-gold);
            padding-left: 20px;
            margin: 25px 0;
            color: #555;
            background-color: #fcfcfc;
            padding: 20px;
        }
        .author {
            text-align: right;
            font-weight: bold;
            color: var(--primary-light);
            margin-top: 10px;
        }
        .user-interaction {
            background-color: #f8f9fa;
            padding: 25px;
            border-radius: var(--border-radius);
            margin: 40px 0;
            border: 1px solid #dee2e6;
        }
        .interaction-form {
            display: grid;
            gap: 20px;
            margin-top: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--primary-light);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 12px;
            border: 1px solid #ccc;
            border-radius: var(--border-radius);
            font-size: 1rem;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .btn {
            background-color: var(--primary-light);
            color: white;
            border: none;
            padding: 14px 25px;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            transition: var(--transition);
            justify-self: start;
        }
        .btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .rating {
            display: flex;
            align-items: center;
            gap: 15px;
            flex-wrap: wrap;
        }
        .stars {
            display: flex;
            gap: 5px;
        }
        .stars i {
            color: var(--text-gray);
            font-size: 1.8rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .stars i:hover,
        .stars i.active {
            color: var(--accent-gold);
        }
        .update-time {
            text-align: right;
            font-size: 0.9rem;
            color: var(--text-gray);
            margin-top: 30px;
            padding-top: 15px;
            border-top: 1px solid #eee;
        }
        footer {
            background-color: var(--primary-dark);
            color: var(--text-light);
            padding: 40px 0 20px;
            margin-top: 40px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 30px;
        }
        .footer-section h3 {
            color: var(--accent-gold);
            margin-bottom: 20px;
            font-size: 1.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: var(--text-gray);
        }
        .footer-links a:hover {
            color: var(--accent-gold);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.1);
            padding: 15px;
            border-radius: var(--border-radius);
            margin: 10px 0;
        }
        friend-link a {
            color: var(--accent-gold);
            font-weight: bold;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: var(--text-gray);
        }
        @media (max-width: 992px) {
            .nav-links {
                gap: 15px;
            }
            h1 {
                font-size: 2.4rem;
            }
            .link-list ul {
                columns: 1;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                align-items: flex-start;
                gap: 20px;
            }
            .search-form {
                max-width: 100%;
                margin: 10px 0;
                order: 3;
                width: 100%;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 25px;
                right: 20px;
            }
            nav {
                display: none;
                width: 100%;
                margin-top: 20px;
            }
            .nav-links {
                flex-direction: column;
                gap: 10px;
            }
            .nav-links a {
                display: block;
                padding: 12px;
                background-color: rgba(255, 255, 255, 0.1);
            }
            .nav-active {
                display: block;
            }
            .footer-content {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            article {
                padding: 20px;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .my-logo {
                font-size: 1.8rem;
            }
            .stats-box {
                grid-template-columns: 1fr;
            }
        }