* { 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%, #e4e8ed 100%);
            max-width: 1800px;
            margin: 0 auto;
            padding: 0 20px;
        }
        h1, h2, h3, h4 { color: #1a237e; font-weight: 700; margin-bottom: 1rem; line-height: 1.3; }
        h1 { font-size: clamp(2.5rem, 5vw, 4rem); margin-top: 1.5rem; border-bottom: 4px solid #d4af37; padding-bottom: 0.5rem; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); margin-top: 2.5rem; padding-left: 10px; border-left: 5px solid #3949ab; }
        h3 { font-size: 1.6rem; color: #283593; margin-top: 2rem; }
        h4 { font-size: 1.3rem; color: #5c6bc0; margin-top: 1.5rem; }
        p { margin-bottom: 1.5rem; font-size: 1.1rem; }
        a { color: #3949ab; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #d4af37; text-decoration: underline; }
        strong { color: #1a237e; }
        em { font-style: italic; color: #555; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 15px; }
        .site-header {
            background: rgba(26, 35, 126, 0.95);
            backdrop-filter: blur(10px);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 5px 20px rgba(0,0,0,0.1);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Cinzel', serif;
            font-size: 2.8rem;
            font-weight: 900;
            color: #d4af37;
            text-decoration: none;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            letter-spacing: 2px;
        }
        .my-logo:hover { color: #fff; text-decoration: none; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #fff;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            background: #d4af37;
            color: #1a237e;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.95rem;
            color: #666;
        }
        .breadcrumb a { color: #666; }
        .breadcrumb a:hover { color: #1a237e; }
        .search-section {
            background: linear-gradient(to right, #3949ab, #283593);
            padding: 2rem;
            border-radius: 12px;
            margin: 2rem 0;
            text-align: center;
            color: white;
        }
        .search-form {
            display: flex;
            max-width: 700px;
            margin: 1.5rem auto 0;
        }
        .search-form input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            border-radius: 50px 0 0 50px;
            font-size: 1.1rem;
            outline: none;
        }
        .search-form button {
            background: #d4af37;
            color: #1a237e;
            border: none;
            border-radius: 0 50px 50px 0;
            padding: 0 2rem;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        .search-form button:hover { background: #ffd54f; }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        .article-content {
            background: #fff;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }
        .sidebar {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: 15px;
            border-left: 5px solid #d4af37;
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 { color: #1a237e; font-size: 1.5rem; margin-top: 0; }
        .article-img {
            width: 100%;
            height: auto;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            transition: transform 0.5s ease;
        }
        .article-img:hover { transform: scale(1.02); }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: -1.5rem;
            margin-bottom: 2rem;
        }
        ul, ol { margin-left: 2rem; margin-bottom: 1.5rem; }
        li { margin-bottom: 0.5rem; }
        .spec-highlight {
            background: linear-gradient(120deg, #e3f2fd, #bbdefb);
            border-left: 5px solid #2196f3;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .tip-box {
            background: #fff8e1;
            border: 2px dashed #ffb300;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 10px;
        }
        .tip-box i { color: #ffb300; margin-right: 10px; }
        .user-interaction {
            background: #fff;
            padding: 2.5rem;
            border-radius: 15px;
            margin: 3rem 0;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }
        .rating-form, .comment-form {
            margin-top: 2rem;
        }
        .stars {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
        }
        .stars i:hover,
        .stars i.active { color: #ffc107; }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: #3949ab;
            outline: none;
        }
        .submit-btn {
            background: linear-gradient(to right, #3949ab, #283593);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            font-size: 1.1rem;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: bold;
        }
        .submit-btn:hover {
            background: linear-gradient(to right, #283593, #1a237e);
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(26, 35, 126, 0.3);
        }
        .site-footer {
            background: #1a237e;
            color: #fff;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
            border-top: 5px solid #d4af37;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: #d4af37;
            border-bottom: 2px solid #3949ab;
            padding-bottom: 0.5rem;
            margin-bottom: 1.5rem;
        }
        .friend-links {
            list-style: none;
            margin-left: 0;
        }
        .friend-links li { margin-bottom: 0.8rem; }
        .friend-links a {
            color: #bbdefb;
            display: block;
            padding: 0.5rem;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .friend-links a:hover {
            background: rgba(212, 175, 55, 0.2);
            color: #fff;
            padding-left: 1rem;
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #3949ab;
            color: #bbdefb;
            font-size: 0.95rem;
        }
        @media (max-width: 768px) {
            .header-content { flex-wrap: wrap; }
            .main-nav {
                width: 100%;
                order: 3;
                margin-top: 1rem;
                display: none;
            }
            .main-nav.active { display: block; }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
                background: rgba(26, 35, 126, 0.98);
                border-radius: 10px;
                padding: 1rem;
            }
            .main-nav li { margin-bottom: 0.5rem; }
            .hamburger { display: block; }
            .article-content, .user-interaction { padding: 1.5rem; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.8s ease-out forwards;
        }