* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
        }
        a {
            color: #d4af37;
            text-decoration: none;
            transition: all 0.3s ease;
        }
        a:hover {
            color: #b8941f;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .site-header {
            background: linear-gradient(90deg, #0c2340 0%, #1a3a5f 100%);
            color: #fff;
            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-family: 'Georgia', serif;
            font-size: 2.2rem;
            font-weight: bold;
            color: #d4af37;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
            letter-spacing: 1px;
        }
        .my-logo:hover {
            color: #ffd700;
            text-decoration: none;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
        }
        .main-nav li {
            margin-left: 2rem;
        }
        .main-nav a {
            color: #fff;
            font-weight: 500;
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            color: #ffd700;
            border-bottom-color: #ffd700;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin: 0 10px;
            color: #6c757d;
        }
        .breadcrumb a {
            color: #6c757d;
        }
        .breadcrumb a:hover {
            color: #0c2340;
        }
        .search-form {
            display: flex;
            margin-left: 2rem;
        }
        .search-input {
            padding: 0.5rem 1rem;
            border: 1px solid #ccc;
            border-radius: 4px 0 0 4px;
            width: 220px;
            outline: none;
        }
        .search-btn {
            background: #d4af37;
            color: #fff;
            border: none;
            padding: 0.5rem 1.2rem;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-btn:hover {
            background: #b8941f;
        }
        .main-content {
            padding: 2.5rem 0;
            background: #fff;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            margin: 2rem auto;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 3px solid #f0f0f0;
        }
        h1 {
            font-size: 2.8rem;
            color: #0c2340;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            color: #6c757d;
            font-size: 0.95rem;
            margin-bottom: 1.5rem;
        }
        .article-meta i {
            margin-right: 0.5rem;
        }
        .intro {
            font-size: 1.25rem;
            color: #555;
            max-width: 900px;
            margin: 0 auto 3rem;
            text-align: center;
            line-height: 1.7;
        }
        .content-section {
            margin-bottom: 3.5rem;
            padding: 0 2rem;
        }
        h2 {
            font-size: 2.2rem;
            color: #1a3a5f;
            margin-bottom: 1.5rem;
            padding-bottom: 0.8rem;
            border-bottom: 2px solid #e4edf5;
            position: relative;
        }
        h2::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100px;
            height: 2px;
            background: #d4af37;
        }
        h3 {
            font-size: 1.8rem;
            color: #2c5282;
            margin: 2.5rem 0 1.2rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #4a5568;
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            line-height: 1.8;
            text-align: justify;
        }
        .highlight {
            background-color: #fff9e6;
            border-left: 4px solid #d4af37;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .highlight p:last-child {
            margin-bottom: 0;
        }
        .feature-img {
            width: 100%;
            max-width: 900px;
            margin: 2.5rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        .feature-img figcaption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 0.8rem;
            background: #f9f9f9;
        }
        .content-link {
            font-weight: 600;
            color: #2b6cb0;
            border-bottom: 1px dotted #2b6cb0;
        }
        .content-link:hover {
            color: #1a4d80;
            border-bottom-style: solid;
        }
        .user-interaction {
            background: #f8f9fa;
            padding: 2.5rem;
            border-radius: 10px;
            margin-top: 4rem;
            border: 1px solid #e9ecef;
        }
        .interaction-title {
            font-size: 1.8rem;
            margin-bottom: 2rem;
            color: #0c2340;
        }
        .form-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #495057;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid #ced4da;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #d4af37;
            box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
        }
        textarea {
            min-height: 120px;
            resize: vertical;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.3rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            margin-bottom: 0;
            transition: color 0.2s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #ffc107;
        }
        .submit-btn {
            background: linear-gradient(90deg, #d4af37, #b8941f);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            font-size: 1.1rem;
            border-radius: 6px;
            cursor: pointer;
            transition: all 0.3s;
            font-weight: 600;
        }
        .submit-btn:hover {
            background: linear-gradient(90deg, #b8941f, #9c7c18);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .site-footer {
            background: #0c2340;
            color: #ccc;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-logo {
            font-size: 2rem;
            color: #d4af37;
            margin-bottom: 1rem;
        }
        .footer-heading {
            font-size: 1.3rem;
            color: #fff;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #2c5282;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #a0aec0;
        }
        .footer-links a:hover {
            color: #ffd700;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: #1a3a5f;
            padding: 1.5rem;
            border-radius: 8px;
            margin-top: 1.5rem;
        }
        friend-link a {
            color: #ffd700;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #2c5282;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            .main-nav ul { gap: 1rem; }
        }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            .hamburger {
                display: block;
                order: 1;
            }
            .my-logo {
                order: 0;
                font-size: 1.8rem;
            }
            .search-form {
                order: 2;
                margin: 1rem 0 0;
                width: 100%;
            }
            .search-input { width: 100%; }
            .main-nav {
                order: 3;
                width: 100%;
                margin-top: 1rem;
                display: none;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                margin: 0;
                border-bottom: 1px solid #2c5282;
            }
            .main-nav a {
                display: block;
                padding: 1rem;
            }
            .content-section {
                padding: 0 1rem;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
        }