* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-dark: #0a3d62;
            --primary-main: #1e5799;
            --primary-light: #4a8ad4;
            --accent-gold: #f9ca24;
            --accent-green: #20bf6b;
            --text-dark: #2d3436;
            --text-light: #636e72;
            --bg-light: #f9f9f9;
            --bg-white: #ffffff;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --border-radius: 8px;
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--text-dark);
            background-color: var(--bg-light);
            overflow-x: hidden;
        }
        h1, h2, h3, h4 {
            color: var(--primary-dark);
            margin-bottom: 1.5rem;
            line-height: 1.3;
            font-weight: 700;
        }
        h1 {
            font-size: 2.8rem;
            text-align: center;
            margin-top: 2rem;
            padding-bottom: 1rem;
            border-bottom: 3px solid var(--accent-gold);
        }
        h2 {
            font-size: 2.2rem;
            margin-top: 3rem;
            padding-left: 1rem;
            border-left: 5px solid var(--primary-main);
        }
        h3 {
            font-size: 1.8rem;
            margin-top: 2.5rem;
            color: var(--primary-main);
        }
        h4 {
            font-size: 1.5rem;
            margin-top: 2rem;
            color: var(--text-dark);
        }
        p {
            margin-bottom: 1.8rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }
        header {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-main) 100%);
            color: white;
            padding: 1.5rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--accent-gold);
            text-decoration: none;
            letter-spacing: 2px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            color: white;
            transform: scale(1.05);
        }
        .my-logo i {
            font-size: 2.5rem;
        }
        .breadcrumb {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 1rem 2rem;
            margin-top: 0.5rem;
            border-radius: var(--border-radius);
        }
        .breadcrumb a {
            color: var(--accent-gold);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
            color: white;
        }
        .breadcrumb span {
            color: rgba(255, 255, 255, 0.8);
            margin: 0 8px;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-desktop a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .nav-desktop a:hover {
            background-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: var(--primary-dark);
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            padding: 2rem;
            box-shadow: var(--shadow);
            border-top: 2px solid var(--accent-gold);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: white;
            text-decoration: none;
            padding: 1rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .mobile-nav a:hover {
            color: var(--accent-gold);
            padding-left: 1rem;
        }
        .search-container {
            background-color: var(--bg-white);
            padding: 3rem;
            margin: 3rem 0;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            text-align: center;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 2rem auto 0;
        }
        .search-input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: 2px solid var(--primary-light);
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1.1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-input:focus {
            border-color: var(--primary-main);
        }
        .search-btn {
            background: linear-gradient(to right, var(--primary-main), var(--primary-dark));
            color: white;
            border: none;
            padding: 0 2rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-btn:hover {
            background: linear-gradient(to right, var(--primary-dark), var(--primary-main));
            transform: scale(1.05);
        }
        main {
            background-color: var(--bg-white);
            padding: 3rem 0;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin: 2rem auto;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.5rem 2rem;
            background-color: rgba(10, 61, 98, 0.05);
            border-radius: var(--border-radius);
            margin-bottom: 3rem;
        }
        .update-time {
            color: var(--text-light);
            font-style: italic;
        }
        .update-time i {
            color: var(--accent-green);
            margin-right: 8px;
        }
        .content-section {
            padding: 0 2rem;
            margin-bottom: 3rem;
        }
        .highlight-box {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            border-left: 5px solid var(--accent-gold);
            padding: 2rem;
            margin: 2.5rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .highlight-box strong {
            color: var(--primary-dark);
            font-size: 1.2rem;
        }
        .feature-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .feature-item {
            background: var(--bg-white);
            padding: 1.8rem;
            border-radius: var(--border-radius);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            transition: var(--transition);
            border: 1px solid rgba(10, 61, 98, 0.1);
        }
        .feature-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }
        .feature-item i {
            color: var(--accent-gold);
            font-size: 2rem;
            margin-bottom: 1rem;
        }
        .content-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--border-radius);
            margin: 2.5rem auto;
            display: block;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .content-image:hover {
            transform: scale(1.02);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            margin-top: 0.5rem;
            margin-bottom: 2rem;
        }
        .interactive-box {
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-main) 100%);
            color: white;
            padding: 3rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
            text-align: center;
        }
        .download-btn {
            display: inline-block;
            background-color: var(--accent-gold);
            color: var(--primary-dark);
            padding: 1.2rem 3rem;
            font-size: 1.3rem;
            font-weight: 700;
            text-decoration: none;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            transition: var(--transition);
            box-shadow: 0 6px 0 rgba(0, 0, 0, 0.2);
        }
        .download-btn:hover {
            background-color: white;
            transform: translateY(-3px);
            box-shadow: 0 9px 0 rgba(0, 0, 0, 0.2);
        }
        .rating-section {
            background-color: var(--bg-white);
            padding: 2.5rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
            border: 2px solid rgba(10, 61, 98, 0.1);
        }
        .rating-stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 1.5rem 0;
            font-size: 2rem;
            color: var(--accent-gold);
        }
        .star {
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover {
            transform: scale(1.2);
        }
        .rating-form {
            max-width: 600px;
            margin: 2rem auto 0;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--primary-dark);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary-main);
            outline: none;
        }
        .submit-btn {
            background: linear-gradient(to right, var(--primary-main), var(--primary-dark));
            color: white;
            border: none;
            padding: 1.2rem 3rem;
            font-size: 1.1rem;
            font-weight: 600;
            border-radius: var(--border-radius);
            cursor: pointer;
            transition: var(--transition);
            display: block;
            width: 100%;
        }
        .submit-btn:hover {
            background: linear-gradient(to right, var(--primary-dark), var(--primary-main));
            transform: translateY(-2px);
        }
        .comments-section {
            margin-top: 4rem;
            padding-top: 3rem;
            border-top: 2px solid rgba(10, 61, 98, 0.1);
        }
        .comment {
            background-color: var(--bg-light);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin-bottom: 2rem;
            border-left: 4px solid var(--primary-main);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 1rem;
            color: var(--text-light);
        }
        .content-links {
            background-color: rgba(249, 202, 36, 0.1);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 2.5rem 0;
        }
        .content-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            list-style: none;
        }
        .content-links a {
            color: var(--primary-main);
            text-decoration: none;
            padding: 0.8rem 1.2rem;
            display: block;
            background-color: white;
            border-radius: var(--border-radius);
            transition: var(--transition);
            border: 1px solid rgba(10, 61, 98, 0.1);
        }
        .content-links a:hover {
            background-color: var(--primary-main);
            color: white;
            transform: translateX(10px);
        }
        .content-links a i {
            margin-right: 10px;
        }
        footer {
            background: linear-gradient(135deg, var(--primary-dark) 0%, #1a1a2e 100%);
            color: white;
            padding: 4rem 0 2rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }
        .footer-section h3 {
            color: var(--accent-gold);
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            border-bottom: 2px solid var(--accent-gold);
            padding-bottom: 0.5rem;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .friend-link {
            background: rgba(255, 255, 255, 0.1);
            padding: 0.8rem 1.5rem;
            border-radius: var(--border-radius);
            color: white;
            text-decoration: none;
            transition: var(--transition);
        }
        .friend-link:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
        }
        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background-color: var(--primary-main);
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            text-decoration: none;
            font-size: 1.5rem;
            box-shadow: var(--shadow);
            transition: var(--transition);
            z-index: 100;
        }
        .back-to-top:hover {
            background-color: var(--primary-dark);
            transform: translateY(-5px);
        }
        @media (max-width: 1024px) {
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            .container { padding: 0 1.5rem; }
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.6rem; }
            .header-content {
                flex-direction: column;
                gap: 1.5rem;
            }
            .nav-desktop {
                display: none;
            }
            .mobile-menu-btn {
                display: block;
                position: absolute;
                top: 1.5rem;
                right: 2rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input {
                border-radius: var(--border-radius);
                margin-bottom: 1rem;
            }
            .search-btn {
                border-radius: var(--border-radius);
                padding: 1rem;
            }
            .article-meta {
                flex-direction: column;
                gap: 1rem;
                text-align: center;
            }
            .feature-list {
                grid-template-columns: 1fr;
            }
            .content-links ul {
                grid-template-columns: 1fr;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
            .container { padding: 0 1rem; }
            .content-section { padding: 0 1rem; }
            .interactive-box { padding: 2rem 1rem; }
            .rating-section { padding: 1.5rem; }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.8s ease-out forwards;
        }
        .emoji {
            font-size: 1.2em;
            margin: 0 5px;
            vertical-align: middle;
        }
        .highlight {
            background-color: rgba(249, 202, 36, 0.2);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        [data-tooltip] {
            position: relative;
            cursor: help;
            border-bottom: 1px dotted var(--primary-main);
        }
        [data-tooltip]:hover::after {
            content: attr(data-tooltip);
            position: absolute;
            bottom: 100%;
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--primary-dark);
            color: white;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            font-size: 0.9rem;
            white-space: nowrap;
            z-index: 1000;
        }
        @media print {
            .mobile-menu-btn,
            .search-container,
            .rating-section,
            .comments-section,
            .back-to-top,
            footer {
                display: none !important;
            }
            body {
                background: white;
                color: black;
                font-size: 12pt;
            }
            .container {
                max-width: 100%;
                padding: 0;
            }
            a {
                color: black !important;
                text-decoration: underline !important;
            }
        }