* { 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%, #e4edf5 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { color: #1a5fb4; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #e06c1a; text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
        .site-header {
            background: #1a365d;
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -1px;
            background: linear-gradient(90deg, #ffd166, #ff9e6d);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }
        .my-logo a { color: inherit; text-decoration: none; }
        .my-logo a:hover { color: #ff9e6d; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #e2e8f0;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0.3rem;
            border-bottom: 3px solid transparent;
        }
        .main-nav a:hover, .main-nav a:focus {
            color: #ffd166;
            border-bottom-color: #ffd166;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            background: #edf2f7;
            padding: 0.8rem 0;
            font-size: 0.95rem;
            border-bottom: 1px solid #cbd5e0;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin: 0 10px;
            color: #718096;
        }
        .breadcrumb a { color: #4a5568; }
        .main-content-area {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
            flex-grow: 1;
        }
        @media (max-width: 992px) {
            .main-content-area { grid-template-columns: 1fr; }
        }
        .article-content { background: white; padding: 2.5rem; border-radius: 12px; box-shadow: 0 6px 20px rgba(0,0,0,0.08); }
        .sidebar { background: white; padding: 2rem; border-radius: 12px; box-shadow: 0 6px 20px rgba(0,0,0,0.05); align-self: start; }
        h1 { font-size: 2.8rem; color: #1a365d; margin-bottom: 1.5rem; line-height: 1.2; border-left: 6px solid #e06c1a; padding-left: 1rem; }
        h2 { font-size: 2.2rem; color: #2d3748; margin: 2.5rem 0 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid #e2e8f0; }
        h3 { font-size: 1.8rem; color: #4a5568; margin: 2rem 0 1rem; }
        h4 { font-size: 1.4rem; color: #718096; margin: 1.5rem 0 0.8rem; }
        p { margin-bottom: 1.5rem; font-size: 1.1rem; text-align: justify; }
        .lead { font-size: 1.3rem; color: #2d3748; font-weight: 500; margin-bottom: 2rem; padding: 1rem; background: #f7fafc; border-radius: 8px; }
        .highlight { background: linear-gradient(120deg, #ffecb3 0%, #ffecb3 100%); padding: 0.2rem 0.4rem; border-radius: 4px; font-weight: 600; }
        .emoji { font-size: 1.2em; margin-right: 0.3em; }
        blockquote {
            border-left: 4px solid #1a5fb4;
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #4a5568;
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        .last-updated { font-size: 0.9rem; color: #718096; text-align: right; margin-top: 3rem; padding-top: 1rem; border-top: 1px dashed #cbd5e0; }
        .article-img {
            margin: 2rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
            max-width: 800px;
        }
        .article-img figcaption { text-align: center; font-size: 0.9rem; color: #718096; padding: 0.5rem; background: #f7fafc; }
        .widget { margin-bottom: 2.5rem; }
        .widget h3 { font-size: 1.5rem; margin-bottom: 1rem; color: #2d3748; border-left: 4px solid #ff9e6d; padding-left: 0.8rem; }
        .search-form { display: flex; }
        .search-form input {
            flex-grow: 1;
            padding: 0.8rem 1rem;
            border: 2px solid #cbd5e0;
            border-radius: 6px 0 0 6px;
            font-size: 1rem;
        }
        .search-form button {
            background: #1a5fb4;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover { background: #e06c1a; }
        .rating-widget .stars { font-size: 1.8rem; color: #ffd166; margin-bottom: 1rem; }
        .rating-widget form { display: flex; flex-direction: column; gap: 0.8rem; }
        .rating-widget select, .rating-widget textarea, .rating-widget input { padding: 0.8rem; border: 1px solid #cbd5e0; border-radius: 6px; font-family: inherit; }
        .rating-widget button { background: #38a169; color: white; border: none; padding: 0.9rem; border-radius: 6px; cursor: pointer; font-weight: bold; }
        .rating-widget button:hover { background: #2f855a; }
        .link-list { list-style: none; }
        .link-list li { margin-bottom: 0.8rem; padding-bottom: 0.8rem; border-bottom: 1px dotted #e2e8f0; }
        .link-list a::before { content: "▶"; color: #e06c1a; margin-right: 0.8rem; font-size: 0.8rem; }
        .comments-section { margin-top: 3rem; }
        .comment { background: #f8f9fa; padding: 1.5rem; border-radius: 8px; margin-bottom: 1.5rem; border-left: 4px solid #a0aec0; }
        .comment-author { font-weight: bold; color: #2d3748; }
        .comment-date { font-size: 0.85rem; color: #718096; margin-left: 1rem; }
        .comment-form { background: #edf2f7; padding: 2rem; border-radius: 8px; }
        .comment-form h3 { margin-top: 0; }
        .form-group { margin-bottom: 1.2rem; }
        .form-group label { display: block; margin-bottom: 0.5rem; font-weight: 600; }
        .form-group input, .form-group textarea { width: 100%; padding: 0.9rem; border: 1px solid #cbd5e0; border-radius: 6px; font-size: 1rem; }
        .form-group textarea { min-height: 150px; resize: vertical; }
        .comment-form button { background: #1a5fb4; color: white; border: none; padding: 1rem 2rem; border-radius: 6px; cursor: pointer; font-size: 1.1rem; }
        .comment-form button:hover { background: #e06c1a; }
        .site-footer {
            background: #1a202c;
            color: #cbd5e0;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-widget h4 { color: white; font-size: 1.3rem; margin-bottom: 1.5rem; border-bottom: 2px solid #4a5568; padding-bottom: 0.5rem; }
        friend-link {
            display: block;
            padding: 0.8rem 0;
            border-bottom: 1px dashed #4a5568;
            color: #a0aec0;
        }
        friend-link a { color: #a0aec0; }
        friend-link a:hover { color: #ffd166; }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #2d3748;
            font-size: 0.9rem;
            color: #718096;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background: #1a365d;
                padding: 1rem;
                transform: translateY(-150%);
                opacity: 0;
                transition: transform 0.4s ease, opacity 0.4s ease;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
                z-index: 999;
            }
            .main-nav.active {
                transform: translateY(0);
                opacity: 1;
            }
            .main-nav ul { flex-direction: column; gap: 0; }
            .main-nav li { width: 100%; }
            .main-nav a { display: block; padding: 1rem; border-bottom: 1px solid #2d3748; }
            .header-container { padding: 0 15px; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .article-content, .sidebar { padding: 1.5rem; }
        }