* { 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%, #e4e8f0 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .site-header {
            background: linear-gradient(90deg, #1a237e 0%, #283593 50%, #3949ab 100%);
            color: white;
            padding: 1.2rem 2rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            max-width: 1300px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: #ffcc00;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            display: flex;
            align-items: center;
            gap: 10px;
            transition: transform 0.3s;
        }
        .my-logo:hover { transform: scale(1.05); }
        .my-logo i { font-size: 2.5rem; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .main-nav a {
            color: #e3f2fd;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 5px;
            transition: all 0.3s;
        }
        .main-nav a:hover, .main-nav a:focus {
            background-color: rgba(255, 204, 0, 0.2);
            color: #ffcc00;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            background-color: #e8eaf6;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            border-bottom: 1px solid #c5cae9;
        }
        .breadcrumb ol {
            max-width: 1300px;
            margin: 0 auto;
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin: 0 10px;
            color: #5c6bc0;
        }
        .breadcrumb a { color: #3949ab; text-decoration: none; }
        .breadcrumb a:hover { text-decoration: underline; }
        .main-container {
            max-width: 1300px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        @media (max-width: 992px) {
            .main-container { grid-template-columns: 1fr; }
        }
        .article-content {
            background: white;
            border-radius: 15px;
            padding: 2.5rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
        }
        .article-header { margin-bottom: 2.5rem; border-bottom: 3px solid #ffcc00; padding-bottom: 1.5rem; }
        h1 { font-size: 2.8rem; color: #1a237e; margin-bottom: 1rem; line-height: 1.2; }
        .meta-info {
            display: flex;
            gap: 1.5rem;
            color: #666;
            font-size: 0.95rem;
            margin-top: 1rem;
        }
        .meta-info i { color: #3949ab; }
        h2 { font-size: 2rem; color: #283593; margin: 2.5rem 0 1.2rem; padding-bottom: 0.5rem; border-bottom: 2px dashed #c5cae9; }
        h3 { font-size: 1.6rem; color: #3949ab; margin: 2rem 0 1rem; }
        h4 { font-size: 1.3rem; color: #5c6bc0; margin: 1.5rem 0 0.8rem; }
        p { margin-bottom: 1.5rem; font-size: 1.1rem; }
        .intro { font-size: 1.3rem; color: #555; background: #f0f4ff; padding: 1.5rem; border-left: 5px solid #ffcc00; border-radius: 0 8px 8px 0; margin: 2rem 0; }
        b, strong { color: #1a237e; }
        .highlight-box {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            border-left: 5px solid #7b1fa2;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .featured-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            border: 3px solid #ffcc00;
            transition: transform 0.5s;
        }
        .featured-img:hover { transform: scale(1.01); }
        .internal-links {
            background: #f9f9ff;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .internal-links ul { columns: 2; list-style-position: inside; }
        .internal-links li { margin-bottom: 0.8rem; }
        .internal-links a {
            color: #3949ab;
            text-decoration: none;
            font-weight: 600;
            transition: color 0.3s;
        }
        .internal-links a:hover { color: #ff9800; text-decoration: underline; }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            border-radius: 15px;
            padding: 1.8rem;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
        }
        .widget-title {
            font-size: 1.4rem;
            color: #1a237e;
            margin-bottom: 1.2rem;
            padding-bottom: 0.7rem;
            border-bottom: 2px solid #ffcc00;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .form-group { display: flex; flex-direction: column; }
        label { font-weight: 600; margin-bottom: 0.3rem; color: #555; }
        input, textarea, select {
            padding: 0.9rem;
            border: 1px solid #c5cae9;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #3949ab;
            box-shadow: 0 0 0 3px rgba(57, 73, 171, 0.2);
        }
        button, .btn {
            background: linear-gradient(90deg, #ff9800, #ff5722);
            color: white;
            border: none;
            padding: 1rem 1.5rem;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s;
            text-align: center;
            text-decoration: none;
            display: inline-block;
        }
        button:hover, .btn:hover {
            background: linear-gradient(90deg, #f57c00, #e64a19);
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(255, 87, 34, 0.3);
        }
        .stars { display: flex; gap: 0.5rem; margin: 0.5rem 0; }
        .star { font-size: 1.8rem; color: #ddd; cursor: pointer; transition: color 0.2s; }
        .star:hover, .star.active { color: #ffcc00; }
        .site-footer {
            background: #1a237e;
            color: #e3f2fd;
            margin-top: auto;
            padding: 3rem 2rem 1.5rem;
        }
        .footer-container {
            max-width: 1300px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-section h3 {
            color: #ffcc00;
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 0.8rem; }
        .footer-links a {
            color: #c5cae9;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover { color: #ffcc00; }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 1rem;
            border-radius: 8px;
            margin-bottom: 0.8rem;
        }
        friend-link a {
            color: #80deea;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #3949ab;
            color: #9fa8da;
            font-size: 0.95rem;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #283593;
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                border-radius: 0 0 15px 15px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.2);
            }
            .main-nav.active ul { display: flex; }
            h1 { font-size: 2.2rem; }
            .main-container { padding: 0 1rem; }
            .article-content { padding: 1.8rem; }
            .internal-links ul { columns: 1; }
        }
        @media print {
            .site-header, .sidebar, .site-footer, .hamburger { display: none; }
            .main-container { grid-template-columns: 1fr; margin: 0; }
            body { background: white; }
        }