:root {
            --primary-blue: #1a6cc7;
            --secondary-teal: #0fb8b0;
            --accent-orange: #ff7e30;
            --dark-bg: #0f172a;
            --light-bg: #f8fafc;
            --text-dark: #1e293b;
            --text-light: #e2e8f0;
            --gray-border: #cbd5e1;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --transition: all 0.3s ease;
            --border-radius: 8px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--light-bg);
            color: var(--text-dark);
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-orange);
        }
        .site-header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 2rem;
            max-width: 1400px;
            margin: 0 auto;
            width: 100%;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, var(--primary-blue), var(--secondary-teal));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -1px;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .main-nav {
            display: flex;
            gap: 2rem;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 1.1rem;
            position: relative;
            padding: 0.5rem 0;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 3px;
            bottom: 0;
            left: 0;
            background-color: var(--accent-orange);
            transition: var(--transition);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--primary-blue);
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #f1f5f9;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--gray-border);
        }
        .breadcrumb a {
            color: #64748b;
        }
        .breadcrumb a:hover {
            color: var(--primary-blue);
        }
        .breadcrumb i {
            margin: 0 0.5rem;
            color: #94a3b8;
        }
        .search-container {
            background: linear-gradient(135deg, var(--dark-bg), #1e3a8a);
            padding: 3rem 2rem;
            text-align: center;
            color: white;
        }
        .search-box {
            max-width: 700px;
            margin: 2rem auto 0;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .search-input {
            flex-grow: 1;
            padding: 1.2rem 1.5rem;
            border: none;
            font-size: 1.1rem;
        }
        .search-btn {
            background-color: var(--accent-orange);
            color: white;
            border: none;
            padding: 0 2rem;
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: #e56b1a;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem;
            flex-grow: 1;
        }
        article {
            background-color: white;
            padding: 3rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin-top: 2rem;
        }
        .article-header {
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 2px solid var(--secondary-teal);
        }
        h1 {
            font-size: 3.2rem;
            color: var(--dark-bg);
            line-height: 1.2;
            margin-bottom: 1rem;
        }
        .meta-info {
            display: flex;
            gap: 1.5rem;
            color: #64748b;
            font-size: 0.95rem;
            margin-bottom: 1rem;
        }
        .meta-info i {
            margin-right: 0.5rem;
        }
        .lead {
            font-size: 1.4rem;
            color: var(--primary-blue);
            font-weight: 300;
            margin-bottom: 2rem;
        }
        h2 {
            font-size: 2.3rem;
            color: var(--dark-bg);
            margin: 3rem 0 1.5rem;
            padding-top: 1rem;
            border-top: 1px solid #e2e8f0;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--primary-blue);
            margin: 2.5rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: var(--secondary-teal);
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.125rem;
            text-align: justify;
        }
        .highlight {
            background-color: #f0f9ff;
            border-left: 4px solid var(--primary-blue);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .feature-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #64748b;
            margin-top: -1rem;
            margin-bottom: 2rem;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.7rem;
        }
        blockquote {
            font-style: italic;
            font-size: 1.3rem;
            color: #475569;
            border-left: 5px solid var(--accent-orange);
            padding-left: 2rem;
            margin: 2.5rem 0;
        }
        .interactive-box {
            background: linear-gradient(to right, #fef3c7, #fde68a);
            border: 1px dashed #f59e0b;
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
        }
        .interactive-box h3 {
            color: #92400e;
            margin-top: 0;
        }
        .user-interaction {
            margin-top: 4rem;
            padding-top: 3rem;
            border-top: 2px solid var(--gray-border);
        }
        .rating-section, .comment-section {
            background-color: #f8fafc;
            padding: 2rem;
            border-radius: var(--border-radius);
            margin-bottom: 2rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0 1.5rem;
        }
        .star {
            font-size: 2rem;
            color: #cbd5e1;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #fbbf24;
        }
        form {
            display: grid;
            gap: 1.2rem;
            margin-top: 1.5rem;
        }
        input, textarea, select {
            padding: 1rem;
            border: 1px solid var(--gray-border);
            border-radius: var(--border-radius);
            font-size: 1rem;
            width: 100%;
        }
        textarea {
            min-height: 150px;
            resize: vertical;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }
        .btn {
            background-color: var(--primary-blue);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: var(--border-radius);
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
            justify-self: start;
        }
        .btn:hover {
            background-color: #1559a8;
            transform: translateY(-2px);
        }
        footer {
            background-color: var(--dark-bg);
            color: var(--text-light);
            padding: 3rem 2rem 2rem;
            margin-top: 4rem;
        }
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            margin-bottom: 1rem;
        }
        .footer-links h4 {
            color: var(--text-light);
            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: #cbd5e1;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 0.5rem;
        }
        friend-link {
            display: block;
            background-color: #1e293b;
            padding: 1rem 1.5rem;
            border-radius: var(--border-radius);
            margin-bottom: 1rem;
            border-left: 4px solid var(--secondary-teal);
        }
        friend-link a {
            color: var(--text-light);
            font-weight: 600;
        }
        friend-link a:hover {
            color: var(--accent-orange);
        }
        .copyright {
            text-align: center;
            padding-top: 3rem;
            margin-top: 3rem;
            border-top: 1px solid #334155;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.8rem; }
            h2 { font-size: 2rem; }
            .container, article { padding: 1.5rem; }
            .form-row { grid-template-columns: 1fr; }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background-color: white;
                flex-direction: column;
                padding: 1rem 2rem;
                box-shadow: var(--shadow);
            }
            .main-nav.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .header-container {
                padding: 1rem;
            }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .lead { font-size: 1.2rem; }
            p { font-size: 1rem; }
            .search-box { flex-direction: column; border-radius: var(--border-radius); }
            .search-input, .search-btn { border-radius: 0; width: 100%; }
            .footer-content { grid-template-columns: 1fr; }
        }