* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', 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 { font-size: 2.8rem; margin-bottom: 1.5rem; color: #1a365d; line-height: 1.2; }
        h2 { font-size: 2.2rem; margin: 2.5rem 0 1.2rem; color: #2d3748; border-bottom: 3px solid #e2e8f0; padding-bottom: 0.5rem; }
        h3 { font-size: 1.8rem; margin: 2rem 0 1rem; color: #4a5568; }
        h4 { font-size: 1.4rem; margin: 1.5rem 0 0.8rem; color: #718096; }
        p, li { margin-bottom: 1.2rem; font-size: 1.125rem; color: #2d3748; }
        a { color: #2b6cb0; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #1a4e8a; text-decoration: underline; }
        strong { color: #1a365d; font-weight: 700; }
        em { font-style: italic; }
        blockquote {
            border-left: 5px solid #e2e8f0;
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #4a5568;
            background: #f7fafc;
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        .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-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(90deg, #63b3ed, #90cdf4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
        }
        .my-logo:hover { text-decoration: none; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #cbd5e0;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover, .main-nav a.active {
            color: white;
            text-decoration: none;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #63b3ed;
            transition: width 0.3s;
        }
        .main-nav a:hover::after { width: 100%; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav ul {
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #2d3748;
                padding: 1rem;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: clip-path 0.4s ease-in-out;
                box-shadow: 0 5px 15px rgba(0,0,0,0.2);
            }
            .main-nav.active ul {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
        }
        .breadcrumb {
            background: #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; }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        .article-body {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.07);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
        }
        .widget h3 {
            font-size: 1.3rem;
            margin-top: 0;
            color: #2d3748;
            border-bottom: 2px solid #e2e8f0;
            padding-bottom: 0.5rem;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .form-group { display: flex; flex-direction: column; gap: 0.3rem; }
        .form-control {
            padding: 0.8rem 1rem;
            border: 1px solid #cbd5e0;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus {
            outline: none;
            border-color: #4299e1;
            box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.15);
        }
        .btn {
            padding: 0.8rem 1.5rem;
            background: #4299e1;
            color: white;
            border: none;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            text-align: center;
        }
        .btn:hover {
            background: #3182ce;
            transform: translateY(-2px);
            text-decoration: none;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.5rem;
            color: #e2e8f0;
            cursor: pointer;
        }
        .stars .active { color: #f6ad55; }
        .featured-img {
            margin: 2rem 0;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        .internal-links {
            background: #f0fff4;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .internal-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 0.8rem;
            list-style: none;
        }
        .internal-links li::before {
            content: '🔗';
            margin-right: 0.5rem;
        }
        .site-footer {
            background: #1a202c;
            color: #cbd5e0;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-widget h4 {
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            border-bottom: 2px solid #4a5568;
            padding-bottom: 0.5rem;
        }
        .footer-links { list-style: none; }
        .footer-links a {
            color: #a0aec0;
            display: block;
            padding: 0.3rem 0;
        }
        .footer-links a:hover { color: #63b3ed; }
        friend-link {
            display: inline-block;
            background: #2d3748;
            color: #90cdf4;
            padding: 0.5rem 1rem;
            margin: 0.3rem;
            border-radius: 4px;
            font-size: 0.9rem;
        }
        friend-link a { color: inherit; }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #4a5568;
            font-size: 0.9rem;
            color: #a0aec0;
        }
        .text-center { text-align: center; }
        .mt-2 { margin-top: 2rem; }
        .mb-2 { margin-bottom: 2rem; }
        .highlight { background: #fffacd; padding: 0.2rem 0.4rem; border-radius: 3px; }
        .last-updated {
            font-size: 0.9rem;
            color: #718096;
            font-style: italic;
            margin-bottom: 2rem;
            display: inline-block;
            background: #edf2f7;
            padding: 0.5rem 1rem;
            border-radius: 20px;
        }