:root {
            --primary-color: #2c5530;
            --secondary-color: #8b4513;
            --accent-color: #d4a017;
            --light-bg: #f9f7f1;
            --text-color: #333;
            --border-color: #ddd;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            --font-serif: Georgia, 'Times New Roman', Times, serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--text-color);
            background-color: #fff;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--accent-color);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
        }
        header {
            background-color: #fff;
            border-bottom: 3px solid var(--primary-color);
            padding: 1.5rem 0;
            margin-bottom: 2rem;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: var(--font-serif);
            font-size: 2.5rem;
            font-weight: bold;
            color: var(--primary-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
        }
        .my-logo:hover {
            color: var(--secondary-color);
        }
        .my-logo i {
            color: var(--accent-color);
            font-size: 2rem;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .nav-links a {
            font-weight: 600;
            padding: 0.5rem 0.2rem;
            border-bottom: 2px solid transparent;
            font-size: 1rem;
        }
        .nav-links a:hover {
            border-bottom-color: var(--accent-color);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: var(--primary-color);
            cursor: pointer;
            padding: 0.5rem;
        }
        .search-container {
            margin: 1rem auto 2rem;
            max-width: 600px;
            position: relative;
        }
        .search-box {
            width: 100%;
            padding: 0.9rem 1.2rem;
            padding-right: 3.5rem;
            border: 2px solid var(--border-color);
            border-radius: 50px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .search-box:focus {
            outline: none;
            border-color: var(--accent-color);
        }
        .search-button {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--primary-color);
            color: white;
            border: none;
            border-radius: 50%;
            width: 42px;
            height: 42px;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-button:hover {
            background: var(--secondary-color);
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin-bottom: 3rem;
        }
        @media (max-width: 900px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .content-area {
            background: var(--light-bg);
            padding: 2.5rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        aside {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 1.5rem;
            align-self: start;
            position: sticky;
            top: 120px;
        }
        h1, h2, h3, h4 {
            font-family: var(--font-serif);
            color: var(--primary-color);
            margin-top: 2rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            border-bottom: 3px solid var(--accent-color);
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            border-left: 5px solid var(--secondary-color);
            padding-left: 15px;
            margin-top: 2.5rem;
        }
        h3 {
            font-size: 1.5rem;
            color: var(--secondary-color);
            margin-top: 1.8rem;
        }
        h4 {
            font-size: 1.2rem;
            font-style: italic;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        blockquote {
            border-left: 4px solid var(--accent-color);
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #555;
            background: #f5f5f5;
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        .note {
            background: #e8f4fd;
            border-left: 4px solid #2196F3;
            padding: 1rem;
            margin: 1.5rem 0;
            border-radius: 0 4px 4px 0;
        }
        .tip {
            background: #f0f9eb;
            border-left: 4px solid #67C23A;
            padding: 1rem;
            margin: 1.5rem 0;
            border-radius: 0 4px 4px 0;
        }
        .infobox {
            background: #f8f9fa;
            border: 1px solid #a2a9b1;
            padding: 1.2rem;
            margin: 1rem 0 2rem 1.5rem;
            float: right;
            width: 300px;
            border-radius: 5px;
            font-size: 0.9rem;
        }
        .infobox th, .infobox td {
            padding: 0.3rem 0.5rem;
            vertical-align: top;
            text-align: left;
        }
        .infobox th {
            text-align: center;
            background: #e6e6e6;
            font-weight: bold;
        }
        .infobox img {
            margin: 0 auto 0.8rem;
        }
        @media (max-width: 700px) {
            .infobox {
                float: none;
                width: 100%;
                margin: 1rem 0;
            }
        }
        .image-container {
            margin: 2rem auto;
            text-align: center;
            max-width: 800px;
        }
        .image-container img {
            border-radius: 8px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-color);
        }
        .image-caption {
            font-size: 0.9rem;
            color: #666;
            margin-top: 0.5rem;
            font-style: italic;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 0.8rem 1.5rem;
            background-color: var(--primary-color);
            color: white;
            border: none;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            min-height: 44px;
            min-width: 44px;
        }
        .btn:hover {
            background-color: var(--secondary-color);
            text-decoration: none;
            color: white;
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary-color);
            color: var(--primary-color);
        }
        .btn-outline:hover {
            background: var(--primary-color);
            color: white;
        }
        .social-share {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            margin: 2rem 0;
        }
        .social-share .btn {
            flex: 1;
            min-width: 120px;
        }
        .fb { background-color: #1877F2; }
        .twitter { background-color: #1DA1F2; }
        .whatsapp { background-color: #25D366; }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 99;
            border-radius: 50%;
            width: 50px;
            height: 50px;
            font-size: 1.2rem;
            box-shadow: 0 4px 10px rgba(0,0,0,0.2);
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s, visibility 0.3s;
        }
        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        input, select, textarea {
            width: 100%;
            padding: 0.9rem;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--accent-color);
            box-shadow: 0 0 0 3px rgba(212, 160, 23, 0.2);
        }
        .rating {
            display: flex;
            gap: 5px;
            direction: rtl;
            margin: 1rem 0;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            padding: 5px;
            transition: color 0.2s;
        }
        .rating input:checked ~ label,
        .rating label:hover,
        .rating label:hover ~ label {
            color: var(--accent-color);
        }
        footer {
            background-color: var(--primary-color);
            color: white;
            padding: 3rem 2rem;
            margin-top: 4rem;
            border-radius: 8px 8px 0 0;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-section h3 {
            color: white;
            border-left: none;
            padding-left: 0;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: #ddd;
        }
        .footer-links a:hover {
            color: var(--accent-color);
        }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            padding: 0.5rem 1rem;
            border-radius: 4px;
            margin: 0.2rem;
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.2);
            font-size: 0.9rem;
            color: #ccc;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 15px;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .header-container {
                flex-direction: column;
                align-items: flex-start;
                gap: 1rem;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 0;
                margin-top: 1rem;
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links li {
                width: 100%;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-links a {
                display: block;
                padding: 1rem;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 1.5rem;
                right: 15px;
            }
            .content-area {
                padding: 1.5rem;
            }
            .social-share .btn {
                min-width: calc(50% - 0.5rem);
            }
        }
        @media print {
            .social-share, .back-to-top, form, .search-container, .hamburger {
                display: none !important;
            }
        }