:root {
            --primary: #1a365d;
            --secondary: #c9a227;
            --accent: #8b4513;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --transition: all 0.3s ease;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --radius: 8px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--dark);
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: var(--primary);
            color: var(--light);
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--secondary);
            text-transform: uppercase;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: #ff6b35;
        }
        .my-logo a {
            color: inherit;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: var(--light);
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
        }
        nav a:hover {
            background: rgba(255,255,255,0.1);
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--light);
        }
        .breadcrumb {
            background: var(--light);
            padding: 0.8rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #dee2e6;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--dark);
            font-weight: 600;
        }
        main {
            padding: 2rem 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
        }
        article {
            background: white;
            padding: 2rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        aside {
            background: white;
            padding: 1.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            align-self: start;
        }
        h1 {
            color: var(--primary);
            font-size: 2.5rem;
            margin-bottom: 1rem;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 0.5rem;
        }
        h2 {
            color: var(--primary);
            font-size: 1.8rem;
            margin: 2rem 0 1rem;
            padding-top: 1rem;
            border-top: 1px dashed var(--accent);
        }
        h3 {
            color: var(--accent);
            font-size: 1.4rem;
            margin: 1.5rem 0 0.8rem;
        }
        h4 {
            color: var(--gray);
            font-size: 1.2rem;
            margin: 1rem 0 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .highlight {
            background: #fff3cd;
            border-left: 4px solid var(--secondary);
            padding: 1rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
            margin: 1.5rem 0;
            border: 2px solid var(--accent);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            font-size: 0.9rem;
            margin-top: -0.5rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ced4da;
            border-radius: var(--radius);
            font-family: inherit;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26,54,93,0.2);
        }
        button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: var(--radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        button:hover {
            background: var(--secondary);
            transform: translateY(-2px);
        }
        .search-box {
            background: var(--light);
            padding: 1.5rem;
            border-radius: var(--radius);
            margin-bottom: 2rem;
        }
        .search-box form {
            display: flex;
            gap: 10px;
        }
        .search-box input {
            flex: 1;
        }
        .comments-section, .rating-section {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid var(--primary);
        }
        .comment {
            background: var(--light);
            padding: 1rem;
            border-radius: var(--radius);
            margin-bottom: 1rem;
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            font-size: 0.9rem;
            color: var(--gray);
            margin-bottom: 0.5rem;
        }
        .stars {
            color: var(--secondary);
            margin: 0.5rem 0;
        }
        .sidebar-widget {
            margin-bottom: 2rem;
        }
        .sidebar-widget h3 {
            font-size: 1.2rem;
            margin-bottom: 1rem;
            color: var(--primary);
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--secondary);
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 0.8rem;
        }
        .related-links a {
            display: block;
            padding: 0.8rem;
            background: var(--light);
            border-radius: var(--radius);
            border-left: 3px solid var(--accent);
        }
        .related-links a:hover {
            background: #e9ecef;
            transform: translateX(5px);
        }
        footer {
            background: var(--primary);
            color: var(--light);
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: var(--secondary);
            margin-bottom: 1.5rem;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            list-style: none;
        }
        .friend-links a {
            color: var(--light);
            background: rgba(255,255,255,0.1);
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
        }
        .friend-links a:hover {
            background: var(--secondary);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #adb5bd;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            nav ul {
                gap: 1rem;
            }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            nav {
                width: 100%;
                display: none;
                margin-top: 1rem;
            }
            nav.active {
                display: block;
            }
            nav ul {
                flex-direction: column;
                gap: 0.5rem;
            }
            nav a {
                display: block;
                text-align: center;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .search-box form {
                flex-direction: column;
            }
        }
        .tooltip {
            position: relative;
            border-bottom: 1px dotted var(--secondary);
            cursor: help;
        }
        .tooltip:hover::after {
            content: attr(data-tooltip);
            position: absolute;
            bottom: 100%;
            left: 50%;
            transform: translateX(-50%);
            background: var(--dark);
            color: white;
            padding: 0.5rem;
            border-radius: var(--radius);
            white-space: nowrap;
            z-index: 10;
            font-size: 0.9rem;
        }
        .price-tag {
            background: linear-gradient(90deg, #ffd700, #ffed4e);
            color: var(--primary);
            padding: 0.5rem 1rem;
            border-radius: 50px;
            font-weight: 900;
            display: inline-block;
            margin: 0.5rem;
            box-shadow: 0 3px 10px rgba(255,215,0,0.3);
        }
        .update-time {
            font-size: 0.9rem;
            color: var(--gray);
            text-align: right;
            margin-bottom: 1rem;
            font-style: italic;
        }