:root {
            --primary-color: #ff6b35;
            --secondary-color: #1a1a2e;
            --accent-color: #00adb5;
            --text-color: #eeeeee;
            --light-bg: #162447;
            --dark-bg: #0f1525;
            --border-color: #2d4059;
            --success-color: #4caf50;
            --warning-color: #ff9800;
            --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background-color: var(--dark-bg);
            color: var(--text-color);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--accent-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-color);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: var(--secondary-color);
            border-bottom: 2px solid var(--primary-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color);
            text-transform: uppercase;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-icon {
            color: var(--accent-color);
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .desktop-nav a {
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 12px;
            border-radius: 4px;
        }
        .desktop-nav a:hover {
            background-color: rgba(255, 107, 53, 0.1);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--text-color);
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: var(--light-bg);
            padding: 20px;
            border-top: 1px solid var(--border-color);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav ul {
            list-style: none;
        }
        .mobile-nav li {
            margin-bottom: 15px;
        }
        .mobile-nav a {
            display: block;
            padding: 12px;
            border-radius: 4px;
            background-color: rgba(255, 255, 255, 0.05);
        }
        .breadcrumb {
            background-color: var(--light-bg);
            padding: 12px 0;
            font-size: 0.9rem;
            margin-bottom: 25px;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin-left: 10px;
            color: var(--accent-color);
        }
        .search-section {
            background: linear-gradient(135deg, var(--light-bg), var(--secondary-color));
            padding: 30px 0;
            margin-bottom: 40px;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        .search-container {
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
        }
        .search-form {
            display: flex;
            margin-top: 20px;
        }
        .search-input {
            flex: 1;
            padding: 15px 20px;
            border: none;
            border-radius: 6px 0 0 6px;
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--text-color);
            font-size: 1rem;
            border: 1px solid var(--border-color);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--accent-color);
        }
        .search-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: #e55a2b;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 40px 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-section {
            background-color: var(--light-bg);
            border-radius: 10px;
            padding: 35px;
            box-shadow: var(--shadow);
        }
        .article-title {
            color: var(--primary-color);
            font-size: 2.5rem;
            margin-bottom: 20px;
            line-height: 1.3;
            border-bottom: 3px solid var(--border-color);
            padding-bottom: 15px;
        }
        .article-meta {
            display: flex;
            gap: 20px;
            margin-bottom: 30px;
            color: #aaa;
            font-size: 0.95rem;
        }
        .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-image {
            width: 100%;
            border-radius: 8px;
            overflow: hidden;
            margin: 30px 0;
            border: 3px solid var(--border-color);
        }
        .article-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.5s ease;
        }
        .article-image img:hover {
            transform: scale(1.03);
        }
        .article-body {
            font-size: 1.1rem;
        }
        .article-body h2 {
            color: var(--accent-color);
            margin: 35px 0 20px;
            font-size: 1.8rem;
            padding-bottom: 10px;
            border-bottom: 2px dashed var(--border-color);
        }
        .article-body h3 {
            color: #ffcc00;
            margin: 30px 0 15px;
            font-size: 1.5rem;
        }
        .article-body p {
            margin-bottom: 25px;
            text-align: justify;
        }
        .highlight-box {
            background-color: rgba(0, 173, 181, 0.1);
            border-left: 4px solid var(--accent-color);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .tip-card {
            background-color: rgba(255, 255, 255, 0.05);
            padding: 20px;
            border-radius: 8px;
            border-top: 3px solid var(--primary-color);
        }
        .tip-card h4 {
            color: var(--primary-color);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }
        .sidebar-widget {
            background-color: var(--light-bg);
            border-radius: 8px;
            padding: 25px;
            box-shadow: var(--shadow);
        }
        .widget-title {
            color: var(--primary-color);
            font-size: 1.3rem;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-color);
        }
        .download-box {
            text-align: center;
            background: linear-gradient(135deg, var(--secondary-color), #1e3c72);
            padding: 25px;
            border-radius: 10px;
        }
        .download-btn {
            display: inline-block;
            background-color: var(--primary-color);
            color: white;
            padding: 15px 30px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 1.2rem;
            margin: 15px 0;
            transition: var(--transition);
        }
        .download-btn:hover {
            background-color: #e55a2b;
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(255, 107, 53, 0.4);
        }
        .interaction-section {
            margin-top: 50px;
            background-color: var(--light-bg);
            border-radius: 10px;
            padding: 35px;
            box-shadow: var(--shadow);
        }
        .section-title {
            color: var(--primary-color);
            font-size: 1.8rem;
            margin-bottom: 30px;
            text-align: center;
        }
        .rating-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            margin-bottom: 40px;
        }
        .stars {
            font-size: 2.5rem;
            color: #ffcc00;
            margin: 15px 0;
        }
        .star {
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover {
            transform: scale(1.2);
        }
        .rating-form, .comment-form {
            background-color: rgba(255, 255, 255, 0.05);
            padding: 25px;
            border-radius: 8px;
            margin-bottom: 30px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-label {
            display: block;
            margin-bottom: 8px;
            color: #ccc;
        }
        .form-input, .form-textarea {
            width: 100%;
            padding: 12px 15px;
            background-color: rgba(255, 255, 255, 0.1);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            color: var(--text-color);
            font-family: var(--font-main);
        }
        .form-input:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--accent-color);
        }
        .submit-btn {
            background-color: var(--accent-color);
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background-color: #00979e;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin: 40px 0;
        }
        .web-link {
            background-color: var(--light-bg);
            padding: 18px;
            border-radius: 6px;
            border-left: 3px solid var(--primary-color);
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: rgba(255, 107, 53, 0.1);
            transform: translateX(5px);
        }
        .site-footer {
            background-color: var(--secondary-color);
            border-top: 2px solid var(--primary-color);
            margin-top: 60px;
            padding: 50px 0 30px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        .footer-about p {
            color: #aaa;
        }
        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        .social-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            transition: var(--transition);
        }
        .social-link:hover {
            background-color: var(--primary-color);
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid var(--border-color);
            color: #888;
            font-size: 0.95rem;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .article-title {
                font-size: 2rem;
            }
            .tips-grid {
                grid-template-columns: 1fr;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input {
                border-radius: 6px;
                margin-bottom: 10px;
            }
            .search-btn {
                border-radius: 6px;
                padding: 12px;
            }
        }
        @media print {
            .site-header, .sidebar, .search-section, .interaction-section, .site-footer {
                display: none;
            }
            body {
                background-color: white;
                color: black;
            }
            .article-section {
                box-shadow: none;
                padding: 0;
            }
        }