* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #f9f7f7 0%, #f0f4f8 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { color: #c62828; text-decoration: none; transition: all 0.3s ease; }
        a:hover { color: #8e0000; text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: linear-gradient(to right, #1a237e, #283593);
            color: white;
            padding: 1rem 2rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: #ffeb3b;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            letter-spacing: 1px;
        }
        .my-logo span { color: #ff5252; }
        .my-logo:hover { text-decoration: none; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #e3f2fd;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background: rgba(255, 255, 255, 0.15);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background: #e8eaf6;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            border-bottom: 1px solid #c5cae9;
        }
        .breadcrumb a { color: #3949ab; }
        .breadcrumb i { margin: 0 0.5rem; }
        .main-content {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
            flex: 1;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        article {
            background: white;
            padding: 3rem;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }
        .sidebar {
            background: white;
            padding: 2rem;
            border-radius: 16px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.05);
            align-self: start;
        }
        h1 {
            color: #1a237e;
            font-size: 3rem;
            margin-bottom: 1.5rem;
            border-bottom: 3px solid #ffeb3b;
            padding-bottom: 0.5rem;
        }
        h2 {
            color: #283593;
            font-size: 2.2rem;
            margin: 3rem 0 1.5rem;
            padding-top: 1rem;
        }
        h3 {
            color: #3949ab;
            font-size: 1.7rem;
            margin: 2.5rem 0 1rem;
        }
        h4 {
            color: #5c6bc0;
            font-size: 1.4rem;
            margin: 2rem 0 1rem;
        }
        p, li {
            font-size: 1.1rem;
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: #555;
            font-weight: 500;
            background: #f5f7ff;
            padding: 1.5rem;
            border-left: 5px solid #c62828;
            border-radius: 0 8px 8px 0;
            margin-bottom: 2.5rem;
        }
        strong { color: #1a237e; }
        .highlight {
            background: linear-gradient(120deg, #ffecb3 0%, #ffecb3 100%);
            padding: 0.2rem 0.5rem;
            border-radius: 3px;
        }
        .search-box, .comment-form, .rating-form {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: 12px;
            margin: 3rem 0;
            border: 1px solid #e9ecef;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #495057;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 2px solid #ced4da;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #c62828;
            box-shadow: 0 0 0 3px rgba(198, 40, 40, 0.1);
        }
        button, .btn {
            background: linear-gradient(to right, #c62828, #d32f2f);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s;
            display: inline-block;
            text-align: center;
        }
        button:hover, .btn:hover {
            background: linear-gradient(to right, #b71c1c, #c62828);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(198, 40, 40, 0.3);
            text-decoration: none;
        }
        .star-rating {
            direction: rtl;
            display: inline-block;
            font-size: 2rem;
        }
        .star-rating input { display: none; }
        .star-rating label {
            color: #ddd;
            cursor: pointer;
            padding: 0 0.2rem;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #ffc107;
        }
        .article-image {
            float: right;
            margin: 0 0 2rem 2rem;
            width: 50%;
            max-width: 500px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .article-image img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .article-image:hover img {
            transform: scale(1.03);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 0.8rem;
            background: #f8f9fa;
            font-size: 0.95rem;
        }
        .internal-links {
            background: #e3f2fd;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .internal-links h4 { margin-top: 0; }
        .internal-links ul { columns: 2; list-style: square inside; }
        .internal-links li { margin-bottom: 0.8rem; }
        .update-time {
            background: #e8f5e9;
            padding: 1rem;
            border-radius: 8px;
            text-align: center;
            margin-bottom: 2rem;
            border: 1px solid #c8e6c9;
        }
        .update-time i { color: #2e7d32; margin-right: 0.5rem; }
        .site-footer {
            background: #1a237e;
            color: #e8eaf6;
            padding: 3rem 2rem 2rem;
            margin-top: 4rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: #ffeb3b;
            margin-bottom: 1rem;
        }
        friend-link {
            display: block;
            margin: 1rem 0;
            padding: 0.8rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 6px;
            transition: background 0.3s;
        }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.1);
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #3949ab;
            font-size: 0.9rem;
            color: #c5cae9;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
            .article-image { float: none; margin: 2rem auto; width: 80%; }
        }
        @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 12px 12px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.2);
            }
            .main-nav.active ul { display: flex; }
            .header-container { flex-direction: column; align-items: flex-start; }
            .main-nav { width: 100%; margin-top: 1rem; }
            .main-nav a { display: block; padding: 1rem; border-radius: 6px; }
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            article, .sidebar { padding: 2rem; }
            .internal-links ul { columns: 1; }
        }
        @media (max-width: 480px) {
            .site-header, .breadcrumb, .main-content { padding-left: 1rem; padding-right: 1rem; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            article { padding: 1.5rem; }
        }