:root {
            --primary-color: #C41E3A; 
            --secondary-color: #1A1A1D; 
            --accent-color: #0F4C75; 
            --light-color: #F5F5F5;
            --gray-color: #8A8A8A;
            --success-color: #4CAF50;
            --warning-color: #FF9800;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --border-radius: 8px;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: var(--light-color);
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }
        .site-header {
            background-color: var(--secondary-color);
            color: white;
            padding: var(--spacing-sm) 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 900;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--primary-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: white;
        }
        .my-logo:hover {
            color: white;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: var(--spacing-md);
        }
        .main-nav a {
            font-weight: 600;
            padding: var(--spacing-xs) var(--spacing-sm);
            border-radius: var(--border-radius);
            position: relative;
        }
        .main-nav a:hover, .main-nav a.active {
            background-color: var(--primary-color);
            color: white;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background: var(--primary-color);
            transition: var(--transition);
        }
        .main-nav a:hover::after {
            width: 80%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: white;
        }
        .breadcrumb {
            background-color: #2a2a2e;
            padding: var(--spacing-sm) 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin: 0 10px;
            color: var(--gray-color);
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
        }
        .hero {
            background: linear-gradient(rgba(26, 26, 29, 0.9), rgba(26, 26, 29, 0.8)), url('https://images.unsplash.com/photo-1550745165-9bc0b252726f?ixlib=rb-4.0.3&auto=format&fit=crop&w=1470&q=80') center/cover no-repeat;
            color: white;
            padding: var(--spacing-lg) 0;
            text-align: center;
        }
        .hero h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            margin-bottom: var(--spacing-sm);
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto var(--spacing-md);
            color: #ddd;
        }
        .cta-button {
            display: inline-block;
            background-color: var(--primary-color);
            color: white;
            padding: 15px 40px;
            border-radius: 50px;
            font-weight: bold;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin: 10px;
            border: 2px solid var(--primary-color);
        }
        .cta-button:hover {
            background-color: transparent;
            color: var(--primary-color);
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(196, 30, 58, 0.3);
        }
        .cta-button.secondary {
            background-color: transparent;
            border-color: white;
        }
        .cta-button.secondary:hover {
            background-color: white;
            color: var(--secondary-color);
        }
        .search-section {
            background-color: white;
            padding: var(--spacing-md) 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .search-container {
            max-width: 800px;
            margin: 0 auto;
        }
        .search-box {
            display: flex;
            border: 2px solid #e0e0e0;
            border-radius: 50px;
            overflow: hidden;
        }
        .search-box input {
            flex: 1;
            padding: 18px 25px;
            border: none;
            font-size: 1.1rem;
            outline: none;
        }
        .search-box button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 30px;
            cursor: pointer;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .search-box button:hover {
            background-color: #a01830;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: var(--spacing-lg);
            padding: var(--spacing-lg) 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background-color: white;
            padding: var(--spacing-lg);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }
        .widget {
            background-color: white;
            padding: var(--spacing-md);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .widget h3 {
            color: var(--primary-color);
            margin-bottom: var(--spacing-sm);
            padding-bottom: 10px;
            border-bottom: 2px solid #eee;
        }
        .link-list {
            list-style: none;
        }
        .link-list li {
            margin-bottom: 12px;
        }
        .link-list a {
            display: block;
            padding: 12px 15px;
            background-color: #f9f9f9;
            border-radius: var(--border-radius);
            border-left: 4px solid var(--accent-color);
        }
        .link-list a:hover {
            background-color: #e9f5ff;
            border-left-color: var(--primary-color);
            transform: translateX(5px);
        }
        h1, h2, h3, h4 {
            color: var(--secondary-color);
            line-height: 1.3;
            margin-top: 1.5em;
            margin-bottom: 0.7em;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-color);
        }
        h2 {
            font-size: 2.2rem;
            border-left: 6px solid var(--primary-color);
            padding-left: 20px;
            margin-top: 2.5em;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--accent-color);
        }
        h4 {
            font-size: 1.4rem;
        }
        p {
            margin-bottom: 1.5em;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: var(--secondary-color);
            background-color: #f0f8ff;
            padding: var(--spacing-md);
            border-radius: var(--border-radius);
            border-left: 5px solid var(--accent-color);
        }
        .highlight {
            background-color: #fffacd;
            padding: 3px 6px;
            border-radius: 4px;
            font-weight: 600;
        }
        .note {
            background-color: #e8f4fd;
            border-left: 5px solid var(--accent-color);
            padding: var(--spacing-md);
            margin: var(--spacing-md) 0;
            border-radius: var(--border-radius);
        }
        .note i {
            color: var(--accent-color);
            margin-right: 10px;
        }
        .image-container {
            margin: var(--spacing-md) 0;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            position: relative;
        }
        .image-container img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .image-container:hover img {
            transform: scale(1.03);
        }
        .image-caption {
            background-color: rgba(0,0,0,0.7);
            color: white;
            padding: 10px 15px;
            font-size: 0.9rem;
            text-align: center;
        }
        .rating-widget {
            text-align: center;
            padding: var(--spacing-md);
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            border-radius: var(--border-radius);
        }
        .stars {
            font-size: 2.5rem;
            color: #ddd;
            margin: 15px 0;
            cursor: pointer;
        }
        .stars .star {
            display: inline-block;
            transition: var(--transition);
        }
        .stars .star:hover,
        .stars .star.active {
            color: var(--warning-color);
            transform: scale(1.2);
        }
        .rating-form input, .comment-form textarea, .comment-form input {
            width: 100%;
            padding: 15px;
            margin-bottom: 15px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
        }
        .rating-form button, .comment-form button {
            width: 100%;
            padding: 15px;
            background-color: var(--primary-color);
            color: white;
            border: none;
            border-radius: var(--border-radius);
            font-weight: bold;
            text-transform: uppercase;
            letter-spacing: 1px;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-form button:hover, .comment-form button:hover {
            background-color: #a01830;
        }
        .comment {
            background-color: #f9f9f9;
            padding: var(--spacing-md);
            border-radius: var(--border-radius);
            margin-bottom: var(--spacing-md);
            border-left: 4px solid #ddd;
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 10px;
            font-size: 0.9rem;
            color: var(--gray-color);
        }
        .comment-author {
            font-weight: bold;
            color: var(--accent-color);
        }
        .update-time {
            background-color: #e8f5e9;
            padding: var(--spacing-sm);
            border-radius: var(--border-radius);
            text-align: center;
            margin: var(--spacing-md) 0;
            font-weight: 600;
            color: #2e7d32;
        }
        .site-footer {
            background-color: var(--secondary-color);
            color: #ccc;
            padding: var(--spacing-lg) 0 0;
            margin-top: var(--spacing-lg);
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-lg);
            padding-bottom: var(--spacing-lg);
            border-bottom: 1px solid #444;
        }
        .footer-section h3 {
            color: white;
            margin-bottom: var(--spacing-md);
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a:hover {
            color: var(--primary-color);
            padding-left: 10px;
        }
        friend-link {
            display: block;
            background-color: #333;
            padding: 15px;
            border-radius: var(--border-radius);
            margin-bottom: 10px;
            text-align: center;
            transition: var(--transition);
        }
        friend-link:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding: var(--spacing-md) 0;
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                background-color: var(--secondary-color);
                padding: var(--spacing-md);
                transition: left 0.5s ease;
                box-shadow: 0 10px 20px rgba(0,0,0,0.2);
                z-index: 999;
            }
            .main-nav.active {
                left: 0;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav a {
                display: block;
                padding: 15px;
                border-bottom: 1px solid #444;
            }
            .main-nav a:last-child {
                border-bottom: none;
            }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            h4 { font-size: 1.2rem; }
            .hero {
                padding: var(--spacing-md) 0;
            }
            .article-content {
                padding: var(--spacing-md);
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.8s ease forwards;
        }
        .delay-1 { animation-delay: 0.2s; }
        .delay-2 { animation-delay: 0.4s; }
        .delay-3 { animation-delay: 0.6s; }