* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ed 100%);
            max-width: 1400px;
            margin: 0 auto;
            padding: 0;
        }
        a { color: #2c5aa0; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #e74c3c; }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: linear-gradient(to right, #1a237e, #283593);
            color: white;
            padding: 1.5rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #ffcc00, #ff9900);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: 1px;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
        }
        .my-logo:hover { transform: scale(1.03); }
        .nav-container { display: flex; align-items: center; }
        .main-nav { display: flex; list-style: none; }
        .main-nav li { margin-left: 1.8rem; }
        .main-nav a {
            color: #e3f2fd;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 5px;
        }
        .main-nav a:hover { background: rgba(255, 255, 255, 0.15); color: #ffcc00; }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            padding: 1rem 2rem;
            background: #e8eaf6;
            font-size: 0.9rem;
            color: #555;
        }
        .breadcrumb a { color: #3949ab; }
        .breadcrumb a:hover { text-decoration: underline; }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2rem;
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.07);
        }
        h1 {
            color: #1a237e;
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            border-bottom: 4px solid #ffcc00;
            padding-bottom: 0.5rem;
        }
        h2 {
            color: #283593;
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-top: 1rem;
            border-top: 2px solid #e8eaf6;
        }
        h3 {
            color: #3949ab;
            font-size: 1.5rem;
            margin: 2rem 0 1rem;
        }
        h4 { color: #5c6bc0; margin: 1.5rem 0 0.8rem; font-size: 1.2rem; }
        p { margin-bottom: 1.5rem; text-align: justify; }
        .lead {
            font-size: 1.2rem;
            color: #555;
            background: #f9f9f9;
            padding: 1.2rem;
            border-left: 5px solid #ffcc00;
            border-radius: 0 8px 8px 0;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background: linear-gradient(120deg, #e3f2fd 0%, #bbdefb 100%);
            padding: 1.5rem;
            border-radius: 10px;
            border-left: 5px solid #1a237e;
            margin: 2rem 0;
        }
        .tip { background: #e8f5e9; border-left-color: #4caf50; }
        .warning { background: #ffebee; border-left-color: #f44336; }
        .img-container {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 800px;
        }
        .img-container img {
            border-radius: 10px;
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
            border: 1px solid #ddd;
        }
        .caption { font-style: italic; color: #666; margin-top: 0.5rem; font-size: 0.95rem; }
        ul, ol { margin-left: 2rem; margin-bottom: 1.5rem; }
        li { margin-bottom: 0.7rem; }
        strong { color: #1a237e; }
        .emoji { font-size: 1.2em; margin-right: 0.3rem; }
        .sidebar {
            background: white;
            padding: 2rem;
            border-radius: 15px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.07);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .widget { margin-bottom: 2.5rem; }
        .widget h3 {
            color: #1a237e;
            font-size: 1.4rem;
            border-bottom: 2px solid #ffcc00;
            padding-bottom: 0.5rem;
            margin-bottom: 1.2rem;
        }
        .search-form { display: flex; }
        .search-form input {
            flex-grow: 1;
            padding: 0.8rem;
            border: 2px solid #c5cae9;
            border-radius: 5px 0 0 5px;
            font-size: 1rem;
        }
        .search-form button {
            background: #3949ab;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 0 5px 5px 0;
            cursor: pointer;
            font-weight: 600;
        }
        .search-form button:hover { background: #283593; }
        .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .comment-form textarea, .rating-form select, .comment-form input {
            padding: 0.8rem;
            border: 2px solid #c5cae9;
            border-radius: 5px;
            font-family: inherit;
            font-size: 1rem;
            width: 100%;
        }
        .comment-form button, .rating-form button {
            background: linear-gradient(to right, #388e3c, #4caf50);
            color: white;
            border: none;
            padding: 0.9rem;
            border-radius: 5px;
            cursor: pointer;
            font-weight: 600;
            transition: transform 0.2s;
        }
        .comment-form button:hover, .rating-form button:hover { transform: translateY(-2px); }
        .star-rating { color: #ffcc00; font-size: 1.5rem; margin-bottom: 0.5rem; }
        .related-links li { margin-bottom: 0.8rem; }
        .related-links a { display: block; padding: 0.5rem; background: #f5f5f5; border-radius: 5px; }
        .related-links a:hover { background: #e3f2fd; }
        .site-footer {
            background: #1a237e;
            color: #e3f2fd;
            padding: 3rem 2rem 1.5rem;
            margin-top: 3rem;
            border-radius: 15px 15px 0 0;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-section h3 {
            color: #ffcc00;
            margin-bottom: 1.2rem;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            padding: 0.8rem 1rem;
            margin-bottom: 0.7rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 5px;
            transition: all 0.3s;
        }
        friend-link:hover {
            background: rgba(255, 204, 0, 0.1);
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #3949ab;
            font-size: 0.9rem;
            color: #90a4ae;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
            .sidebar { position: static; }
        }
        @media (max-width: 768px) {
            .site-header { flex-direction: column; align-items: flex-start; }
            .nav-container { width: 100%; margin-top: 1rem; }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #283593;
                padding: 1rem;
                border-radius: 10px;
            }
            .main-nav.active { display: flex; }
            .main-nav li { margin: 0.5rem 0; }
            .hamburger { display: block; align-self: flex-end; margin-top: -3.5rem; }
            h1 { font-size: 2.2rem; }
            article, .sidebar { padding: 1.5rem; }
        }