* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
            margin: 0;
            padding: 0;
        }
        a {
            text-decoration: none;
            color: #3498db;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #2980b9;
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .site-header {
            background: linear-gradient(135deg, #2c3e50, #4a6491);
            color: white;
            padding: 1rem 2rem;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: bold;
            color: #fff;
            text-transform: uppercase;
            letter-spacing: 2px;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
        }
        .my-logo:hover {
            color: #f1c40f;
        }
        .main-nav ul {
            display: flex;
            gap: 1.5rem;
        }
        .main-nav a {
            color: white;
            font-weight: 500;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
            transition: background 0.3s ease;
        }
        .main-nav a:hover {
            background: rgba(255,255,255,0.2);
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: white;
        }
        .breadcrumb {
            background: #ecf0f1;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: #7f8c8d;
        }
        .breadcrumb a:hover {
            color: #3498db;
        }
        .container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
        }
        .content {
            background: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
        }
        h1 {
            color: #2c3e50;
            font-size: 2.8rem;
            margin-bottom: 1rem;
            line-height: 1.2;
            border-bottom: 3px solid #3498db;
            padding-bottom: 0.5rem;
        }
        h2 {
            color: #2c3e50;
            font-size: 2rem;
            margin: 2rem 0 1rem;
            padding-left: 0.5rem;
            border-left: 5px solid #f1c40f;
        }
        h3 {
            color: #34495e;
            font-size: 1.5rem;
            margin: 1.5rem 0 0.8rem;
        }
        h4 {
            color: #5d6d7e;
            font-size: 1.2rem;
            margin: 1rem 0 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .highlight {
            background: #fffacd;
            padding: 1rem;
            border-left: 4px solid #f1c40f;
            margin: 1.5rem 0;
            border-radius: 0 5px 5px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .article-img {
            width: 100%;
            max-width: 800px;
            margin: 1.5rem auto;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 3px 10px rgba(0,0,0,0.1);
        }
        .form-section {
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-family: inherit;
            font-size: 1rem;
        }
        button {
            background: #3498db;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 4px;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.3s ease;
        }
        button:hover {
            background: #2980b9;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.5rem;
            color: #f1c40f;
        }
        .rating-stars i {
            cursor: pointer;
            transition: color 0.2s ease;
        }
        .rating-stars i:hover {
            color: #f39c12;
        }
        .site-footer {
            background: #2c3e50;
            color: white;
            padding: 2rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1.5rem;
        }
        friend-link {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            justify-content: center;
        }
        friend-link a {
            color: #bdc3c7;
            padding: 0.5rem 1rem;
            border: 1px solid #7f8c8d;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        friend-link a:hover {
            color: #3498db;
            border-color: #3498db;
        }
        .copyright {
            text-align: center;
            font-size: 0.9rem;
            color: #95a5a6;
            margin-top: 1rem;
        }
        @media (max-width: 768px) {
            .container {
                grid-template-columns: 1fr;
                padding: 0 1rem;
            }
            .header-container {
                flex-wrap: wrap;
            }
            .main-nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #2c3e50;
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                z-index: 1000;
            }
            .main-nav.active ul {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .content, .sidebar {
                padding: 1.5rem;
            }
        }
        .btn {
            display: inline-block;
            background: #2ecc71;
            color: white;
            padding: 0.6rem 1.2rem;
            border-radius: 4px;
            font-weight: bold;
            transition: transform 0.2s ease, background 0.3s ease;
        }
        .btn:hover {
            background: #27ae60;
            transform: translateY(-2px);
        }
        .link-inline {
            font-weight: 600;
            color: #e74c3c;
            border-bottom: 1px dashed #e74c3c;
        }
        .link-inline:hover {
            color: #c0392b;
            border-bottom-style: solid;
        }