* { 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 { color: #1a365d; font-weight: 800; line-height: 1.3; margin-bottom: 1rem; }
        h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); margin-top: 1.5rem; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); border-left: 5px solid #d4af37; padding-left: 1rem; margin-top: 3rem; }
        h3 { font-size: clamp(1.4rem, 3vw, 1.9rem); color: #2d3748; margin-top: 2.5rem; }
        h4 { font-size: 1.3rem; color: #4a5568; margin-top: 2rem; }
        p { margin-bottom: 1.5rem; font-size: 1.1rem; }
        a { color: #2b6cb0; text-decoration: none; transition: color 0.2s; }
        a:hover { color: #1a365d; text-decoration: underline; }
        strong { color: #2d3748; }
        em { font-style: italic; color: #718096; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        main .container {
            display: grid;
            grid-template-columns: 1fr;
            gap: 3rem;
        }
        @media (min-width: 992px) {
            main .container { grid-template-columns: 3fr 1fr; }
        }
        header {
            background: linear-gradient(135deg, #1a365d 0%, #2d3748 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 900;
            color: #d4af37;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .my-logo i { font-size: 2rem; }
        .my-logo:hover { color: #f7e08c; text-decoration: none; }
        nav ul { display: flex; list-style: none; gap: 2rem; }
        nav a { color: #e2e8f0; font-weight: 600; padding: 0.5rem 0; }
        nav a:hover { color: #d4af37; text-decoration: none; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #2d3748;
                padding: 1.5rem;
                box-shadow: 0 5px 10px rgba(0,0,0,0.2);
            }
            nav ul.active { display: flex; }
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #edf2f7;
            font-size: 0.9rem;
        }
        .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: #718096;
        }
        .breadcrumb a { color: #4a5568; }
        .breadcrumb a:hover { color: #1a365d; }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            color: #718096;
            font-size: 0.95rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid #e2e8f0;
            margin-bottom: 2.5rem;
        }
        .update-time { color: #d4af37; font-weight: 600; }
        .hero-image {
            width: 100%;
            border-radius: 8px;
            margin: 2.5rem 0;
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
        }
        .info-box {
            background: #f0f9ff;
            border-left: 4px solid #2b6cb0;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .info-box h4 { margin-top: 0; color: #2b6cb0; }
        .edition-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .edition-card {
            background: white;
            border: 1px solid #e2e8f0;
            border-radius: 10px;
            padding: 1.5rem;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .edition-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.08);
        }
        .price-tag {
            font-size: 2rem;
            color: #1a365d;
            font-weight: 900;
            margin: 1rem 0;
        }
        .buy-btn {
            display: inline-block;
            background: linear-gradient(to right, #38a169, #2f855a);
            color: white;
            padding: 0.75rem 1.5rem;
            border-radius: 6px;
            font-weight: 700;
            text-align: center;
            margin-top: 1rem;
            border: none;
            cursor: pointer;
            width: 100%;
        }
        .buy-btn:hover { background: #2f855a; text-decoration: none; }
        .sidebar {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget { margin-bottom: 2.5rem; }
        .sidebar-widget h3 { font-size: 1.4rem; margin-top: 0; }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .search-form input, .comment-form textarea, .comment-form input, .rating-form select {
            padding: 0.9rem;
            border: 1px solid #cbd5e0;
            border-radius: 6px;
            font-size: 1rem;
        }
        .search-form button, .comment-form button, .rating-form button {
            background: #1a365d;
            color: white;
            border: none;
            padding: 0.9rem;
            border-radius: 6px;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.2s;
        }
        .search-form button:hover, .comment-form button:hover, .rating-form button:hover { background: #2d3748; }
        .star-rating { display: flex; gap: 0.5rem; font-size: 1.5rem; color: #d4af37; margin: 0.5rem 0; }
        .related-links { list-style: none; }
        .related-links li { margin-bottom: 0.8rem; padding-left: 1.2rem; position: relative; }
        .related-links li::before { content: "⚓"; position: absolute; left: 0; }
        footer {
            background: #1a365d;
            color: #e2e8f0;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo { font-size: 1.8rem; font-weight: 900; color: #d4af37; margin-bottom: 1rem; }
        .footer-links h4 { color: #d4af37; font-size: 1.2rem; margin-bottom: 1.2rem; }
        .footer-links ul { list-style: none; }
        .footer-links li { margin-bottom: 0.7rem; }
        .footer-links a { color: #cbd5e0; }
        .footer-links a:hover { color: white; }
        friend-link {
            display: block;
            background: rgba(212, 175, 55, 0.1);
            border: 1px dashed #d4af37;
            padding: 1rem;
            border-radius: 6px;
            margin: 1rem 0;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2d3748;
            font-size: 0.9rem;
            color: #a0aec0;
        }