* { 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: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
        }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(90deg, #2ecc71, #1abc9c);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i { color: #f1c40f; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: background 0.3s, transform 0.2s;
        }
        .main-nav a:hover, .main-nav a:focus {
            background: rgba(255,255,255,0.2);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            background: #f8f9fa;
            border-bottom: 1px solid #dee2e6;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #2ecc71;
            text-decoration: none;
        }
        main {
            padding: 2rem 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        .content-area {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 6px 20px rgba(0,0,0,0.07);
        }
        .sidebar {
            background: white;
            border-radius: 12px;
            padding: 1.5rem;
            box-shadow: 0 6px 20px rgba(0,0,0,0.07);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        h1 {
            font-size: 2.8rem;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #2ecc71;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: #27ae60;
            margin: 2.5rem 0 1rem;
            padding-left: 10px;
            border-left: 5px solid #f1c40f;
        }
        h3 {
            font-size: 1.5rem;
            color: #16a085;
            margin: 1.8rem 0 0.8rem;
        }
        h4 { font-size: 1.2rem; color: #2980b9; margin: 1.5rem 0 0.5rem; }
        p { margin-bottom: 1.5rem; }
        strong { color: #e74c3c; }
        .lead {
            font-size: 1.2rem;
            color: #555;
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid #3498db;
        }
        .feature-box {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            border-radius: 10px;
            padding: 2rem;
            margin: 2rem 0;
            border: 1px solid #d1c4e9;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-bottom: 2rem;
        }
        .search-form input, textarea, select {
            padding: 0.8rem;
            border: 2px solid #bdc3c7;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .search-form input:focus, textarea:focus, select:focus {
            border-color: #2ecc71;
            outline: none;
        }
        button, .btn {
            background: linear-gradient(to right, #2ecc71, #1abc9c);
            color: white;
            border: none;
            padding: 0.9rem 1.8rem;
            border-radius: 6px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
            text-align: center;
            text-decoration: none;
            display: inline-block;
        }
        button:hover, .btn:hover {
            transform: scale(1.03);
            box-shadow: 0 5px 15px rgba(46, 204, 113, 0.4);
        }
        .stars { display: flex; gap: 5px; margin: 1rem 0; }
        .star { font-size: 1.8rem; color: #ecf0f1; cursor: pointer; transition: color 0.2s; }
        .star:hover, .star.active { color: #f1c40f; }
        .article-img {
            width: 100%;
            border-radius: 10px;
            overflow: hidden;
            margin: 2rem 0;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .article-img img { transition: transform 0.5s; }
        .article-img:hover img { transform: scale(1.03); }
        .caption {
            text-align: center;
            font-style: italic;
            color: #7f8c8d;
            margin-top: 0.5rem;
        }
        .content-link {
            color: #3498db;
            text-decoration: none;
            border-bottom: 1px dotted #3498db;
            padding-bottom: 1px;
        }
        .content-link:hover {
            color: #e74c3c;
            border-bottom: 1px solid #e74c3c;
        }
        .site-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 2rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .friend-links { display: flex; flex-wrap: wrap; gap: 1rem; }
        friend-link a {
            background: #34495e;
            color: #bdc3c7;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            text-decoration: none;
            transition: background 0.3s;
        }
        friend-link a:hover { background: #3d566e; color: white; }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #34495e;
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            main { grid-template-columns: 1fr; }
            .sidebar { position: static; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background: #2ecc71;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: clip-path 0.4s ease-out;
            }
            .main-nav.active { clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%); }
            .main-nav ul {
                flex-direction: column;
                padding: 2rem;
                gap: 1rem;
            }
            h1 { font-size: 2.2rem; }
            .header-content { flex-wrap: wrap; }
        }
        .text-center { text-align: center; }
        .mt-3 { margin-top: 3rem; }
        .mb-3 { margin-bottom: 3rem; }
        .updated { font-size: 0.9rem; color: #7f8c8d; background: #f8f9fa; padding: 0.5rem 1rem; border-radius: 4px; display: inline-block; }