:root {
            --primary-blue: #1a237e;
            --accent-gold: #ffb300;
            --neutral-light: #f8f9fa;
            --neutral-dark: #212121;
            --text-body: #333333;
            --shadow: 0 2px 8px rgba(0,0,0,0.08);
            --border-radius: 6px;
            --max-width: 1200px;
            --side-width: 300px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
            line-height: 1.6;
            color: var(--text-body);
            background-color: var(--neutral-light);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: var(--accent-gold);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, .btn {
            cursor: pointer;
            min-height: 44px;
            min-width: 44px;
            padding: 0.75rem 1.5rem;
            border: none;
            border-radius: var(--border-radius);
            background-color: var(--primary-blue);
            color: white;
            font-weight: 600;
            transition: all 0.2s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        button:hover, .btn:hover {
            background-color: var(--accent-gold);
            transform: translateY(-2px);
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1rem;
        }
        .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 0;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-blue);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .my-logo i {
            color: var(--accent-gold);
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-desktop a {
            font-weight: 500;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-desktop a:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            transition: width 0.3s;
        }
        .nav-desktop a:hover:after {
            width: 100%;
        }
        .hamburger-btn {
            display: none;
            background: none;
            color: var(--primary-blue);
            font-size: 1.5rem;
            padding: 0.5rem;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: white;
            padding: 1rem;
            border-top: 1px solid #eee;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            padding: 0.75rem 0;
            border-bottom: 1px solid #f0f0f0;
        }
        .main-wrapper {
            display: grid;
            grid-template-columns: 1fr var(--side-width);
            gap: 2rem;
            padding: 2rem 0;
            flex: 1;
        }
        @media (max-width: 992px) {
            .main-wrapper {
                grid-template-columns: 1fr;
            }
        }
        .content-main {
            background: white;
            border-radius: var(--border-radius);
            padding: 2rem;
            box-shadow: var(--shadow);
        }
        .content-sidebar {
            background: white;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        h1, h2, h3, h4 {
            color: var(--neutral-dark);
            margin-top: 1.5em;
            margin-bottom: 0.5em;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.5rem;
            border-bottom: 3px solid var(--accent-gold);
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 1px solid #ddd;
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            margin-bottom: 1rem;
            max-width: 80ch;
        }
        ul, ol {
            padding-left: 1.5rem;
            margin-bottom: 1rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        .info-box {
            background: #f0f7ff;
            border-left: 4px solid var(--primary-blue);
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .img-container {
            margin: 1.5rem 0;
            text-align: center;
        }
        .img-container img {
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin: 0 auto;
        }
        .img-caption {
            font-size: 0.9rem;
            color: #666;
            margin-top: 0.5rem;
            font-style: italic;
        }
        .table-container {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }
        th, td {
            border: 1px solid #ddd;
            padding: 0.75rem;
            text-align: left;
        }
        th {
            background-color: var(--primary-blue);
            color: white;
            font-weight: 600;
        }
        tr:nth-child(even) {
            background-color: #f9f9f9;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            margin: 1.5rem 0;
        }
        .form-input, .form-textarea {
            flex: 1;
            min-width: 250px;
            padding: 0.75rem;
            border: 1px solid #ccc;
            border-radius: var(--border-radius);
            font-size: 1rem;
        }
        .form-textarea {
            min-height: 120px;
            font-family: inherit;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 1.5rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: var(--accent-gold);
        }
        .social-share {
            display: flex;
            gap: 1rem;
            margin: 2rem 0;
            flex-wrap: wrap;
        }
        .share-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 1.25rem;
            border-radius: 50px;
            color: white;
            font-weight: 500;
        }
        .share-btn.facebook { background-color: #1877f2; }
        .share-btn.twitter { background-color: #1da1f2; }
        .share-btn.whatsapp { background-color: #25d366; }
        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--primary-blue);
            color: white;
            font-size: 1.2rem;
            z-index: 99;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
        }
        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
        }
        .site-footer {
            background-color: var(--neutral-dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-links h4 {
            color: white;
            margin-bottom: 1rem;
        }
        .footer-links ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.5rem;
        }
        .footer-links a {
            color: #ccc;
        }
        .footer-links a:hover {
            color: white;
        }
        friend-link {
            display: block;
            margin: 0.5rem 0;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.5rem; }
            .nav-desktop { display: none; }
            .hamburger-btn { display: block; }
            .content-main, .content-sidebar { padding: 1.5rem; }
            .main-wrapper { gap: 1.5rem; }
            .social-share { justify-content: center; }
        }