* { 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-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        h1, h2, h3, h4, h5 { font-weight: 800; line-height: 1.3; margin-bottom: 1rem; color: #1a365d; }
        h1 { font-size: clamp(2.5rem, 5vw, 3.75rem); margin-top: 1rem; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); border-bottom: 3px solid #4299e1; padding-bottom: 0.5rem; margin-top: 3rem; }
        h3 { font-size: clamp(1.4rem, 3vw, 1.875rem); color: #2d3748; margin-top: 2.5rem; }
        h4 { font-size: 1.3rem; color: #4a5568; margin-top: 2rem; }
        p { margin-bottom: 1.5rem; font-size: 1.125rem; }
        a { color: #3182ce; text-decoration: none; transition: color 0.2s ease; }
        a:hover { color: #2c5282; text-decoration: underline; }
        strong { color: #2d3748; }
        em { font-style: italic; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #1a365d 0%, #2d3748 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Impact', 'Arial Black', sans-serif;
            font-size: 2rem;
            font-weight: 900;
            color: #fff;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo span { color: #63b3ed; }
        .my-logo:hover { text-decoration: none; color: #fff; }
        .main-nav { display: flex; align-items: center; }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-links a {
            color: #e2e8f0;
            font-weight: 600;
            text-decoration: none;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #4299e1;
            transition: width 0.3s ease;
        }
        .nav-links a:hover::after { width: 100%; }
        .nav-links a:hover { color: white; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            background-color: #edf2f7;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin-left: 0.5rem;
            color: #a0aec0;
        }
        .breadcrumb a { color: #4a5568; }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 2rem 0;
        }
        @media (max-width: 992px) {
            .content-grid { grid-template-columns: 1fr; }
        }
        .main-article {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.05);
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #e2e8f0;
            font-size: 0.95rem;
            color: #718096;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .last-updated { display: flex; align-items: center; gap: 0.5rem; }
        .intro {
            font-size: 1.3rem;
            line-height: 1.8;
            color: #4a5568;
            background: #f7fafc;
            padding: 1.5rem;
            border-left: 5px solid #4299e1;
            margin-bottom: 2.5rem;
            border-radius: 0 8px 8px 0;
        }
        .featured-image {
            margin: 2.5rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #718096;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .highlight-box {
            background: linear-gradient(to right, #ebf8ff, #bee3f8);
            border-left: 5px solid #3182ce;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            padding: 1.8rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.04);
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            margin-top: 0;
            margin-bottom: 1.2rem;
            padding-bottom: 0.7rem;
            border-bottom: 2px solid #e2e8f0;
        }
        .search-form { display: flex; }
        .search-input {
            flex-grow: 1;
            padding: 0.9rem 1rem;
            border: 2px solid #cbd5e0;
            border-radius: 6px 0 0 6px;
            font-size: 1rem;
        }
        .search-button {
            background: #3182ce;
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.2s ease;
        }
        .search-button:hover { background: #2c5282; }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #e2e8f0;
            cursor: pointer;
            margin-bottom: 0.5rem;
        }
        .star-rating .star:hover,
        .star-rating .star.active { color: #f6ad55; }
        .form-group { display: flex; flex-direction: column; gap: 0.5rem; }
        label { font-weight: 600; color: #4a5568; }
        input, textarea, select {
            padding: 0.9rem;
            border: 2px solid #cbd5e0;
            border-radius: 6px;
            font-size: 1rem;
            font-family: inherit;
            transition: border-color 0.2s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #3182ce;
            box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
        }
        .submit-btn {
            background: #38a169;
            color: white;
            border: none;
            padding: 1rem 1.8rem;
            border-radius: 6px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s ease;
            align-self: flex-start;
        }
        .submit-btn:hover { background: #2f855a; }
        .site-footer {
            background: #1a202c;
            color: #cbd5e0;
            padding: 3rem 0 2rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #fff;
            margin-top: 0;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
            border-bottom: none;
        }
        friend-link {
            display: inline-block;
            background: #2d3748;
            color: #90cdf4;
            padding: 0.6rem 1.2rem;
            margin: 0.3rem;
            border-radius: 50px;
            text-decoration: none;
            font-size: 0.9rem;
            transition: all 0.2s ease;
        }
        friend-link:hover {
            background: #4299e1;
            color: white;
            text-decoration: none;
            transform: translateY(-2px);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #2d3748;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-links {
                position: fixed;
                top: 70px;
                right: -100%;
                flex-direction: column;
                background: #1a365d;
                width: 100%;
                text-align: center;
                padding: 2rem 0;
                gap: 0;
                transition: right 0.3s ease;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            .nav-links.active { right: 0; }
            .nav-links li { width: 100%; }
            .nav-links a {
                display: block;
                padding: 1rem;
                border-bottom: 1px solid #2d3748;
            }
            .nav-links a::after { display: none; }
            .main-article { padding: 1.5rem; }
            .header-container, .footer-content { flex-direction: column; align-items: flex-start; gap: 1rem; }
        }