:root {
            --primary: #b91c1c;
            --primary-dark: #7f1d1d;
            --secondary: #1e3a8a;
            --accent: #fbbf24;
            --light: #fef2f2;
            --dark: #1f2937;
            --gray: #6b7280;
            --transition: all 0.3s ease;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --radius: 8px;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.6;
            color: var(--dark);
            background-color: #fff;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            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 0;
        }
        .logo {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo span {
            color: var(--accent);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--accent);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent);
            transition: var(--transition);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--light);
            padding: 0.75rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin-left: 0.5rem;
            color: var(--gray);
        }
        .search-box {
            background-color: #f8fafc;
            padding: 2rem 0;
            text-align: center;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            gap: 0;
        }
        .search-input {
            flex: 1;
            padding: 0.875rem 1rem;
            border: 2px solid #cbd5e1;
            border-right: none;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
        }
        .search-btn {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 0.875rem 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: #1e40af;
        }
        main {
            padding: 2rem 0;
        }
        article {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        .content-area {
            min-width: 0;
        }
        aside {
            min-width: 0;
        }
        h1 {
            font-size: 2.5rem;
            color: var(--primary-dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 1.8rem;
            color: var(--secondary);
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--light);
        }
        h3 {
            font-size: 1.4rem;
            color: var(--dark);
            margin: 1.5rem 0 0.75rem;
        }
        p {
            margin-bottom: 1.25rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 500;
            color: var(--primary);
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #fffbeb;
            border-left: 4px solid var(--accent);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .figure-container {
            margin: 2rem 0;
            text-align: center;
        }
        .figure-container img {
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin: 0 auto 1rem;
        }
        .figure-caption {
            font-style: italic;
            color: var(--gray);
            font-size: 0.9rem;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.25rem;
        }
        .term {
            font-weight: bold;
            color: var(--primary);
        }
        .important {
            font-weight: 700;
            color: var(--primary-dark);
        }
        blockquote {
            border-left: 4px solid var(--primary);
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: var(--dark);
        }
        .sidebar-widget {
            background-color: #f8fafc;
            padding: 1.5rem;
            border-radius: var(--radius);
            margin-bottom: 2rem;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            margin-top: 0;
            color: var(--primary);
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.25rem;
            margin: 1rem 0;
        }
        .star {
            color: #d1d5db;
            font-size: 1.5rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--accent);
        }
        .rating-form .btn {
            width: 100%;
            margin-top: 1rem;
        }
        .comment-form textarea,
        .comment-form input {
            width: 100%;
            padding: 0.75rem;
            margin-bottom: 1rem;
            border: 1px solid #cbd5e1;
            border-radius: var(--radius);
            font-family: inherit;
        }
        .btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0.75rem 1.5rem;
            border-radius: var(--radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn:hover {
            background-color: var(--primary-dark);
        }
        .web-links {
            background-color: #1f2937;
            padding: 3rem 0;
            color: white;
        }
        .web-links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1rem;
        }
        .web-link {
            background-color: #374151;
            padding: 1rem;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: #4b5563;
            transform: translateY(-3px);
        }
        .web-link a {
            color: #93c5fd;
            display: block;
        }
        .site-footer {
            background-color: var(--dark);
            color: white;
            padding: 2rem 0;
            text-align: center;
        }
        .copyright {
            color: #9ca3af;
            font-size: 0.9rem;
            margin-top: 1rem;
        }
        @media (max-width: 992px) {
            article {
                grid-template-columns: 1fr;
            }
            .main-nav ul {
                gap: 1rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--primary-dark);
                padding: 1rem;
                transform: translateY(-100%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
            }
            .main-nav.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1rem;
            }
            h1 {
                font-size: 2rem;
            }
        }