:root {
            --primary: #dc2626; 
            --primary-dark: #b91c1c;
            --secondary: #1e40af; 
            --accent: #059669; 
            --light: #f8fafc;
            --dark: #0f172a;
            --gray: #64748b;
            --border: #e2e8f0;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --radius: 0.5rem;
            --transition: all 0.3s ease;
            --max-width: 1280px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background-color: var(--light);
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        ul, ol {
            padding-left: 1.5rem;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .site-header {
            background: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
            border-bottom: 1px solid var(--border);
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .my-logo i {
            color: var(--secondary);
        }
        .my-logo:hover {
            color: var(--primary-dark);
        }
        .search-form {
            display: flex;
            flex: 0 1 400px;
        }
        .search-input {
            flex: 1;
            padding: 0.75rem 1rem;
            border: 2px solid var(--border);
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
            outline: none;
        }
        .search-input:focus {
            border-color: var(--primary);
        }
        .search-btn {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            font-weight: 600;
        }
        .search-btn:hover {
            background: var(--primary-dark);
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            font-weight: 600;
            color: var(--dark);
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--primary);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--primary);
            transition: var(--transition);
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--dark);
            cursor: pointer;
        }
        .breadcrumb {
            background: #f1f5f9;
            padding: 1rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 0.75rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.75rem;
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
            text-decoration: underline;
        }
        .hero {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: white;
            padding: 4rem 0;
            text-align: center;
            margin-bottom: 3rem;
            border-radius: 0 0 var(--radius) var(--radius);
        }
        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            opacity: 0.95;
        }
        .last-updated {
            font-style: italic;
            background: rgba(255,255,255,0.1);
            display: inline-block;
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
        }
        .content-area {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin-bottom: 4rem;
        }
        .main-content {
            background: white;
            padding: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        article h2, article h3, article h4 {
            color: var(--dark);
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        article h2 {
            font-size: 2.2rem;
            border-left: 5px solid var(--primary);
            padding-left: 1rem;
        }
        article h3 {
            font-size: 1.8rem;
            color: var(--secondary);
        }
        article h4 {
            font-size: 1.4rem;
            color: var(--accent);
        }
        article p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        article strong {
            color: var(--primary);
            font-weight: 700;
        }
        .highlight-box {
            background: #f0f9ff;
            border-left: 4px solid var(--secondary);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .inline-link {
            color: var(--secondary);
            font-weight: 600;
            border-bottom: 2px dotted var(--secondary);
        }
        .inline-link:hover {
            color: var(--primary);
            border-bottom-style: solid;
        }
        .feature-img {
            margin: 2.5rem auto;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            overflow: hidden;
        }
        .feature-img img {
            transition: transform 0.5s ease;
        }
        .feature-img:hover img {
            transform: scale(1.03);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            padding: 1.8rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--primary);
            margin-bottom: 1.2rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--border);
            font-size: 1.4rem;
        }
        .rating-form .stars {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }
        .stars input {
            display: none;
        }
        .stars label {
            font-size: 1.8rem;
            color: #d1d5db;
            cursor: pointer;
            transition: var(--transition);
        }
        .stars label:hover,
        .stars input:checked ~ label {
            color: #fbbf24;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 0.75rem;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            border-color: var(--primary);
            outline: none;
        }
        .btn {
            display: inline-block;
            background: var(--primary);
            color: white;
            padding: 0.9rem 2rem;
            border: none;
            border-radius: var(--radius);
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            width: 100%;
        }
        .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(220, 38, 38, 0.2);
        }
        .btn-secondary {
            background: var(--secondary);
        }
        .btn-secondary:hover {
            background: #1e3a8a;
        }
        .comment-list {
            list-style: none;
            margin-top: 1.5rem;
        }
        .comment-item {
            padding: 1.2rem 0;
            border-bottom: 1px solid var(--border);
        }
        .comment-item:last-child {
            border-bottom: none;
        }
        .comment-author {
            font-weight: 700;
            color: var(--dark);
        }
        .comment-date {
            font-size: 0.85rem;
            color: var(--gray);
            margin-left: 0.75rem;
        }
        .comment-text {
            margin-top: 0.5rem;
        }
        .site-footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 3rem;
            margin-bottom: 2.5rem;
        }
        .footer-col h4 {
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            color: #f8fafc;
            position: relative;
            padding-bottom: 0.75rem;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 50px;
            height: 3px;
            background: var(--primary);
        }
        .footer-links {
            list-style: none;
        }
        .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;
            margin-top: 2rem;
            padding: 1.5rem;
            background: rgba(255,255,255,0.05);
            border-radius: var(--radius);
        }
        friend-link h5 {
            font-size: 1.1rem;
            margin-bottom: 1rem;
        }
        friend-link a {
            color: #60a5fa;
            text-decoration: underline;
        }
        friend-link a:hover {
            color: #93c5fd;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #334155;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        @media (max-width: 1024px) {
            .content-area {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                gap: 1rem;
            }
            .search-form {
                width: 100%;
            }
            .hamburger {
                display: block;
            }
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: white;
                box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
                padding: 1rem;
                border-top: 1px solid var(--border);
            }
            .main-nav.active ul {
                display: flex;
            }
            .hero h1 {
                font-size: 2.5rem;
            }
            .main-content {
                padding: 1.5rem;
            }
            article h2 {
                font-size: 1.9rem;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            article h2 {
                font-size: 1.7rem;
            }
            article h3 {
                font-size: 1.5rem;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .main-content, .sidebar-widget {
            animation: fadeIn 0.6s ease-out;
        }