:root {
            --primary-dark: #0c1b33;
            --primary-accent: #00a8e8;
            --secondary-accent: #ff4655;
            --neutral-light: #f5f7fa;
            --neutral-mid: #8a9ba8;
            --neutral-dark: #394b59;
            --shadow: 0 4px 12px rgba(12, 27, 51, 0.15);
            --border-radius: 8px;
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--neutral-dark);
            background-color: #f0f2f5;
            background-image: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--primary-dark);
            background-image: linear-gradient(145deg, var(--primary-dark) 0%, #1a2b4a 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
            border-bottom: 3px solid var(--primary-accent);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Orbitron', 'Arial Black', sans-serif;
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
        }
        .my-logo:hover {
            color: var(--primary-accent);
            transform: translateY(-2px);
        }
        .my-logo i {
            color: var(--secondary-accent);
            font-size: 2rem;
        }
        .desktop-nav {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
        }
        .nav-link {
            color: var(--neutral-light);
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover {
            background-color: rgba(0, 168, 232, 0.15);
            color: var(--primary-accent);
        }
        .nav-link.active {
            background-color: var(--primary-accent);
            color: white;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
            transition: var(--transition);
        }
        .hamburger:hover {
            color: var(--primary-accent);
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .mobile-nav {
            position: fixed;
            top: 70px;
            right: -100%;
            width: 280px;
            height: calc(100vh - 70px);
            background-color: var(--primary-dark);
            padding: 2rem;
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            transition: right 0.4s ease;
            z-index: 999;
            box-shadow: -5px 0 15px rgba(0, 0, 0, 0.2);
        }
        .mobile-nav.active {
            right: 0;
        }
        .mobile-nav .nav-link {
            font-size: 1.2rem;
            border-left: 4px solid transparent;
            padding-left: 1rem;
        }
        .mobile-nav .nav-link:hover {
            border-left-color: var(--primary-accent);
            background-color: transparent;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #e9ecef;
            border-bottom: 1px solid #d0d7de;
        }
        .breadcrumb-links {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            list-style: none;
        }
        .breadcrumb-links li {
            display: flex;
            align-items: center;
        }
        .breadcrumb-links a {
            color: var(--neutral-dark);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb-links a:hover {
            color: var(--primary-accent);
            text-decoration: underline;
        }
        .breadcrumb-links .separator {
            margin: 0 0.5rem;
            color: var(--neutral-mid);
        }
        main {
            padding: 2rem 0 4rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 3rem;
            box-shadow: var(--shadow);
            overflow: hidden;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 6px solid var(--secondary-accent);
            padding-left: 1.5rem;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-dark);
            margin: 3rem 0 1.5rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--primary-accent);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--neutral-dark);
            margin: 2.5rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--neutral-dark);
            margin: 2rem 0 0.75rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.25rem;
            color: var(--neutral-dark);
            font-weight: 500;
            margin-bottom: 2rem;
            padding: 1.5rem;
            background-color: rgba(0, 168, 232, 0.05);
            border-left: 4px solid var(--primary-accent);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .highlight {
            background-color: rgba(255, 70, 85, 0.1);
            padding: 0.2rem 0.5rem;
            border-radius: 3px;
            font-weight: 600;
            color: var(--secondary-accent);
        }
        .emphasis {
            font-weight: 700;
            color: var(--primary-dark);
        }
        blockquote {
            border-left: 4px solid var(--secondary-accent);
            padding: 1.5rem 2rem;
            margin: 2.5rem 0;
            background-color: #f8f9fa;
            font-style: italic;
            color: var(--neutral-dark);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        blockquote::before {
            content: "\201C";
            font-size: 3rem;
            color: var(--secondary-accent);
            line-height: 0;
            margin-right: 0.5rem;
            vertical-align: -0.5rem;
        }
        ul, ol {
            margin-bottom: 1.5rem;
            padding-left: 2rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--border-radius);
            margin: 2.5rem auto;
            display: block;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
            transition: var(--transition);
            border: 1px solid #e1e4e8;
        }
        .article-image:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.2);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--neutral-mid);
            margin-top: 0.5rem;
            margin-bottom: 2.5rem;
            font-size: 0.95rem;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            box-shadow: var(--shadow);
        }
        .widget-title {
            font-size: 1.3rem;
            color: var(--primary-dark);
            margin-bottom: 1.2rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--primary-accent);
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .widget-title i {
            color: var(--secondary-accent);
        }
        .search-form {
            display: flex;
            margin-bottom: 1.5rem;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.75rem 1rem;
            border: 2px solid #d0d7de;
            border-right: none;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--primary-accent);
        }
        .search-button {
            background-color: var(--primary-accent);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
            font-weight: 600;
        }
        .search-button:hover {
            background-color: #0090c7;
        }
        .rating-container {
            text-align: center;
        }
        .rating-stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin-bottom: 1rem;
            font-size: 1.8rem;
        }
        .star {
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-input {
            padding: 0.75rem;
            border: 2px solid #d0d7de;
            border-radius: var(--border-radius);
            font-size: 1rem;
        }
        .rating-submit {
            background-color: var(--secondary-accent);
            color: white;
            border: none;
            padding: 0.75rem;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-submit:hover {
            background-color: #e03a4e;
        }
        .comment-section {
            margin-top: 4rem;
            padding-top: 3rem;
            border-top: 2px solid #e9ecef;
        }
        .comment-form {
            background-color: #f8f9fa;
            padding: 2rem;
            border-radius: var(--border-radius);
            margin-bottom: 3rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--neutral-dark);
        }
        .form-input,
        .form-textarea {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 2px solid #d0d7de;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-input:focus,
        .form-textarea:focus {
            outline: none;
            border-color: var(--primary-accent);
            box-shadow: 0 0 0 3px rgba(0, 168, 232, 0.2);
        }
        .form-textarea {
            min-height: 150px;
            resize: vertical;
        }
        .form-submit {
            background-color: var(--primary-accent);
            color: white;
            border: none;
            padding: 0.75rem 2rem;
            border-radius: var(--border-radius);
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .form-submit:hover {
            background-color: #0090c7;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
        }
        .related-links {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .related-link {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.75rem 1rem;
            background-color: #f8f9fa;
            border-radius: var(--border-radius);
            color: var(--neutral-dark);
            text-decoration: none;
            transition: var(--transition);
            border-left: 4px solid transparent;
        }
        .related-link:hover {
            background-color: rgba(0, 168, 232, 0.1);
            border-left-color: var(--primary-accent);
            transform: translateX(5px);
        }
        .related-link i {
            color: var(--primary-accent);
        }
        footer {
            background-color: var(--primary-dark);
            color: var(--neutral-light);
            padding: 3rem 0 2rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2.5rem;
        }
        .footer-section h3 {
            color: white;
            font-size: 1.4rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--primary-accent);
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .footer-links a {
            color: var(--neutral-mid);
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .footer-links a:hover {
            color: var(--primary-accent);
            transform: translateX(5px);
        }
        friend-link {
            display: block;
            margin: 1.5rem 0;
            padding: 1rem;
            background-color: rgba(255, 255, 255, 0.05);
            border-radius: var(--border-radius);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        friend-link a {
            color: var(--primary-accent);
            font-weight: 600;
            text-decoration: none;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--neutral-mid);
            font-size: 0.95rem;
        }
        .update-time {
            background-color: #e9f7fe;
            padding: 1rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            display: flex;
            align-items: center;
            gap: 1rem;
            border-left: 4px solid var(--primary-accent);
        }
        .update-time i {
            color: var(--primary-accent);
            font-size: 1.2rem;
        }
        .text-center {
            text-align: center;
        }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .mt-3 { margin-top: 3rem; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mb-3 { margin-bottom: 3rem; }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.6s ease-out forwards;
        }