* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a { color: #4a6ee0; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #2a4ec4; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { padding-left: 2em; margin-bottom: 1.5em; }
        p, li { margin-bottom: 1.2em; }
        h1, h2, h3, h4 { color: #222; font-weight: 700; line-height: 1.3; margin-bottom: 0.8em; }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.2rem; border-bottom: 3px solid #4a6ee0; padding-bottom: 0.3em; margin-top: 2em; }
        h3 { font-size: 1.8rem; margin-top: 1.8em; }
        h4 { font-size: 1.4rem; margin-top: 1.5em; }
        strong { font-weight: 700; color: #111; }
        em { font-style: italic; }
        blockquote {
            border-left: 5px solid #4a6ee0;
            padding-left: 1.5em;
            margin: 2em 0;
            font-style: italic;
            color: #555;
            background: #f0f4ff;
            padding: 1.5em;
            border-radius: 0 8px 8px 0;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #1a237e 0%, #4a6ee0 100%);
            color: white;
            padding: 1.2rem 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: 2.2rem;
            font-weight: 900;
            letter-spacing: -0.5px;
            color: white;
        }
        .my-logo span { color: #ffcc00; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2.5rem;
        }
        .main-nav a {
            color: #e0e7ff;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: white;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #ffcc00;
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
            background: transparent;
            border: none;
            padding: 5px;
        }
        .hamburger span {
            width: 28px;
            height: 3px;
            background: white;
            border-radius: 2px;
            transition: 0.3s;
        }
        .breadcrumb {
            background: #edf2f7;
            padding: 1rem 0;
            font-size: 0.95rem;
            margin-bottom: 2rem;
        }
        .breadcrumb a { color: #4a6ee0; }
        .breadcrumb a:hover { text-decoration: underline; }
        .breadcrumb span { color: #666; }
        .search-module {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.05);
            margin: 3rem 0;
            text-align: center;
        }
        .search-module h2 {
            border: none;
            margin-top: 0;
        }
        .search-form {
            display: flex;
            max-width: 700px;
            margin: 1.5rem auto 0;
        }
        .search-form input {
            flex-grow: 1;
            padding: 1.2rem 1.5rem;
            border: 2px solid #cbd5e0;
            border-radius: 8px 0 0 8px;
            font-size: 1.1rem;
            transition: border-color 0.3s;
        }
        .search-form input:focus {
            outline: none;
            border-color: #4a6ee0;
        }
        .search-form button {
            background: #4a6ee0;
            color: white;
            border: none;
            border-radius: 0 8px 8px 0;
            padding: 0 2.5rem;
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background: #2a4ec4;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 2.5rem 0;
        }
        .article-content {
            background: white;
            padding: 3rem;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.04);
        }
        .lead {
            font-size: 1.3rem;
            color: #444;
            margin-bottom: 2.5em;
            padding-bottom: 1.5em;
            border-bottom: 1px dashed #ccc;
        }
        .feature-img {
            width: 100%;
            border-radius: 10px;
            margin: 2.5em auto;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            border: 1px solid #e2e8f0;
        }
        .highlight-box {
            background: linear-gradient(to right, #f0f4ff, #e6eeff);
            border-left: 6px solid #4a6ee0;
            padding: 2rem;
            margin: 2.5em 0;
            border-radius: 0 10px 10px 0;
        }
        .note {
            background: #fff8e1;
            border-left: 6px solid #ffcc00;
            padding: 1.5rem;
            margin: 2em 0;
            border-radius: 0 8px 8px 0;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.04);
        }
        .widget h3 {
            font-size: 1.5rem;
            margin-top: 0;
            color: #1a237e;
            border-bottom: 2px solid #e2e8f0;
            padding-bottom: 0.8rem;
        }
        .rating-module,
        .comment-module {
            margin-top: 3em;
            padding-top: 2.5em;
            border-top: 2px solid #e2e8f0;
        }
        .rating-module h3,
        .comment-module h3 {
            margin-top: 0;
        }
        .star-rating {
            display: flex;
            gap: 5px;
            margin: 1em 0 1.5em;
        }
        .star-rating input { display: none; }
        .star-rating label {
            font-size: 2.2rem;
            color: #cbd5e0;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #ffcc00;
        }
        .star-rating input:checked ~ label {
            color: #ffcc00;
        }
        .interaction-form {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            margin-top: 1.5rem;
        }
        .interaction-form textarea,
        .interaction-form input[type="text"],
        .interaction-form input[type="email"] {
            width: 100%;
            padding: 1rem;
            border: 2px solid #cbd5e0;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .interaction-form textarea {
            min-height: 150px;
            resize: vertical;
        }
        .interaction-form input:focus,
        .interaction-form textarea:focus {
            outline: none;
            border-color: #4a6ee0;
        }
        .interaction-form button {
            align-self: flex-start;
            background: #4a6ee0;
            color: white;
            border: none;
            border-radius: 8px;
            padding: 1rem 2.5rem;
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            transition: background 0.3s;
        }
        .interaction-form button:hover {
            background: #2a4ec4;
        }
        .related-links {
            margin-top: 3em;
            padding: 2rem;
            background: #f8f9fa;
            border-radius: 10px;
        }
        .related-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            list-style: none;
            padding-left: 0;
        }
        .related-links li {
            margin-bottom: 0.8em;
        }
        .related-links a {
            display: block;
            padding: 0.9rem 1.2rem;
            background: white;
            border-radius: 8px;
            border: 1px solid #e2e8f0;
            transition: all 0.3s;
            font-weight: 600;
        }
        .related-links a:hover {
            background: #4a6ee0;
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(74, 110, 224, 0.2);
            border-color: #4a6ee0;
        }
        .site-footer {
            background: #1a237e;
            color: #cbd5e0;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            gap: 2.5rem;
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
        }
        .footer-section h4 {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
        }
        .footer-section ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-section li { margin-bottom: 0.8em; }
        .footer-section a {
            color: #cbd5e0;
        }
        .footer-section a:hover {
            color: white;
            text-decoration: underline;
        }
        friend-link {
            display: block;
            margin-top: 1em;
            padding-top: 1em;
            border-top: 1px solid #2d3748;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2d3748;
            font-size: 0.95rem;
            color: #a0aec0;
        }
        .last-updated {
            font-size: 0.9rem;
            color: #666;
            text-align: right;
            margin-top: 2em;
            font-style: italic;
        }
        @media (max-width: 1024px) {
            .main-content {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                background: #1a237e;
                padding: 2rem;
                transition: left 0.4s ease;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
                z-index: 999;
            }
            .main-nav.active {
                left: 0;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1.5rem;
            }
            .header-container {
                padding: 0 15px;
            }
            .article-content,
            .search-module,
            .widget {
                padding: 2rem 1.5rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input {
                border-radius: 8px;
                margin-bottom: 1rem;
            }
            .search-form button {
                border-radius: 8px;
                padding: 1.2rem;
            }
        }