:root {
            --primary-green: #58cc02;
            --secondary-blue: #1cb0f6;
            --accent-orange: #ff9f00;
            --dark-text: #333333;
            --light-text: #666666;
            --background-light: #f9f9f9;
            --background-white: #ffffff;
            --border-color: #e0e0e0;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        * {
            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: 1.7;
            color: var(--dark-text);
            background-color: var(--background-light);
            max-width: 100%;
            overflow-x: hidden;
        }
        a {
            color: var(--secondary-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-green);
            text-decoration: underline;
        }
        .site-header {
            background-color: var(--background-white);
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 1rem 2rem;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-green);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
        }
        .my-logo a:hover {
            color: var(--secondary-blue);
            text-decoration: none;
        }
        .main-nav {
            display: flex;
            gap: 2rem;
        }
        .main-nav a {
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background-color: var(--primary-green);
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: var(--dark-text);
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #f0f8ff;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb a {
            color: var(--light-text);
        }
        .breadcrumb a:hover {
            color: var(--primary-green);
        }
        .container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        main {
            background-color: var(--background-white);
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: var(--shadow);
        }
        aside {
            background-color: var(--background-white);
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        article h1 {
            font-size: 2.8rem;
            color: var(--dark-text);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 4px solid var(--primary-green);
            padding-bottom: 0.5rem;
        }
        article h2 {
            font-size: 2rem;
            color: var(--secondary-blue);
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed var(--border-color);
        }
        article h3 {
            font-size: 1.5rem;
            color: var(--dark-text);
            margin-top: 2rem;
            margin-bottom: 0.8rem;
        }
        article h4 {
            font-size: 1.2rem;
            color: var(--light-text);
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
        }
        article p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        article strong {
            color: var(--primary-green);
            font-weight: 700;
        }
        article em {
            font-style: italic;
            color: var(--accent-orange);
        }
        .featured-image {
            width: 100%;
            height: auto;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }
        .highlight-box {
            background: linear-gradient(135deg, #e6f7ff, #f0fff4);
            border-left: 5px solid var(--primary-green);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .link-list {
            list-style: none;
            padding-left: 0;
            margin: 1.5rem 0;
        }
        .link-list li {
            padding: 0.5rem 0;
            border-bottom: 1px dotted var(--border-color);
        }
        .link-list li:before {
            content: '🔗';
            margin-right: 10px;
        }
        .functional-section {
            background-color: #f8f9fa;
            padding: 1.8rem;
            border-radius: 10px;
            margin: 2.5rem 0;
        }
        .functional-section h3 {
            color: var(--secondary-blue);
            margin-top: 0;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: 1rem;
        }
        input, textarea, select {
            padding: 0.8rem;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary-green);
            box-shadow: 0 0 0 3px rgba(88, 204, 2, 0.2);
        }
        button, .btn {
            background: linear-gradient(to right, var(--primary-green), var(--secondary-blue));
            color: white;
            border: none;
            padding: 0.9rem 1.5rem;
            border-radius: 30px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        button:hover, .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(28, 176, 246, 0.4);
            text-decoration: none;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.5rem;
            color: #ffcc00;
            margin: 0.5rem 0;
        }
        .rating-stars i {
            cursor: pointer;
        }
        .comment {
            background-color: var(--background-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 1rem;
            margin: 1rem 0;
        }
        .comment-author {
            font-weight: 700;
            color: var(--secondary-blue);
        }
        .comment-date {
            font-size: 0.85rem;
            color: var(--light-text);
        }
        .site-footer {
            background-color: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 2rem 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h4 {
            color: var(--primary-green);
            margin-bottom: 1.2rem;
            font-size: 1.2rem;
        }
        friend-link {
            display: block;
            margin: 0.5rem 0;
            color: #bdc3c7;
        }
        friend-link a {
            color: inherit;
        }
        friend-link a:hover {
            color: white;
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #34495e;
            font-size: 0.9rem;
            color: #95a5a6;
        }
        @media (max-width: 992px) {
            .container {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 1rem;
                gap: 0;
            }
            .main-nav.active {
                display: flex;
            }
            .main-nav a {
                padding: 0.8rem;
                border-bottom: 1px solid var(--border-color);
            }
            .hamburger {
                display: block;
            }
            .container {
                padding: 0 1rem;
            }
            main, aside {
                padding: 1.5rem;
            }
            article h1 {
                font-size: 2.2rem;
            }
            article h2 {
                font-size: 1.7rem;
            }
        }
        .text-center { text-align: center; }
        .mb-2 { margin-bottom: 2rem; }
        .mt-2 { margin-top: 2rem; }
        .last-updated {
            font-size: 0.9rem;
            color: var(--light-text);
            font-style: italic;
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px solid var(--border-color);
        }