* {
            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-color: #f8f5f0;
            background-image: linear-gradient(to bottom, #0a1a2a 0%, #1a3a5f 10%, #f8f5f0 10.5%);
            background-attachment: fixed;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 700; }
        .italic { font-style: italic; }
        .highlight {
            background-color: #ffeb3b;
            padding: 0 4px;
            border-radius: 3px;
        }
        .section-padding {
            padding: 60px 0;
        }
        .site-header {
            background-color: rgba(10, 26, 42, 0.95);
            color: #fff;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: #ff9a3c;
            text-decoration: none;
            text-transform: uppercase;
            letter-spacing: 1px;
            font-family: 'Trebuchet MS', sans-serif;
            transition: color 0.3s;
        }
        .my-logo a:hover {
            color: #ff6f00;
            text-shadow: 0 0 8px rgba(255, 154, 60, 0.5);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .main-nav a {
            color: #e0e0e0;
            text-decoration: none;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 4px;
            transition: all 0.3s;
            position: relative;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: #ff9a3c;
            background-color: rgba(255, 154, 60, 0.1);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background-color: #ff9a3c;
            transition: all 0.3s;
            transform: translateX(-50%);
        }
        .main-nav a:hover::after {
            width: 80%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        .mobile-nav {
            display: none;
            background-color: #0a1a2a;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 20px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.5);
            z-index: 999;
        }
        .mobile-nav.active {
            display: block;
        }
        .mobile-nav ul {
            list-style: none;
        }
        .mobile-nav li {
            margin-bottom: 15px;
        }
        .mobile-nav a {
            color: #e0e0e0;
            text-decoration: none;
            font-size: 1.1rem;
            display: block;
            padding: 10px;
            border-left: 3px solid transparent;
            transition: all 0.3s;
        }
        .mobile-nav a:hover {
            color: #ff9a3c;
            border-left-color: #ff9a3c;
            background-color: rgba(255, 154, 60, 0.05);
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 12px 0;
            margin-bottom: 30px;
            font-size: 0.9rem;
        }
        .breadcrumb .container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
        }
        .breadcrumb a {
            color: #1a3a5f;
            text-decoration: none;
            transition: color 0.3s;
        }
        .breadcrumb a:hover {
            color: #ff9a3c;
            text-decoration: underline;
        }
        .breadcrumb span {
            margin: 0 8px;
            color: #6c757d;
        }
        .search-section {
            background-color: #ffffff;
            border-radius: 8px;
            padding: 25px;
            margin-bottom: 40px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            border-left: 5px solid #1a3a5f;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex-grow: 1;
            padding: 14px 20px;
            border: 2px solid #ced4da;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .search-input:focus {
            outline: none;
            border-color: #ff9a3c;
        }
        .search-btn {
            background-color: #1a3a5f;
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-weight: 600;
            transition: background-color 0.3s;
        }
        .search-btn:hover {
            background-color: #ff9a3c;
        }
        main {
            background-color: #fff;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            overflow: hidden;
            margin-bottom: 40px;
            position: relative;
        }
        .article-header {
            background: linear-gradient(135deg, #1a3a5f 0%, #0a1a2a 100%);
            color: white;
            padding: 60px 20px;
            text-align: center;
            margin-bottom: 40px;
            border-bottom: 5px solid #ff9a3c;
        }
        h1 {
            font-size: 3.2rem;
            margin-bottom: 20px;
            font-family: Georgia, 'Times New Roman', Times, serif;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 30px;
            font-size: 0.95rem;
            color: #ccc;
            margin-top: 25px;
        }
        .article-content {
            padding: 0 40px 40px;
        }
        h2 {
            font-size: 2.2rem;
            color: #1a3a5f;
            margin: 50px 0 25px;
            padding-bottom: 12px;
            border-bottom: 2px dashed #ff9a3c;
            font-family: Georgia, serif;
        }
        h3 {
            font-size: 1.7rem;
            color: #2c5282;
            margin: 40px 0 20px;
        }
        h4 {
            font-size: 1.4rem;
            color: #4a5568;
            margin: 30px 0 15px;
        }
        p {
            margin-bottom: 1.8rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: #1a3a5f;
            font-weight: 500;
            border-left: 4px solid #ff9a3c;
            padding-left: 20px;
            margin: 30px 0;
        }
        .content-img {
            margin: 40px auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
            border: 3px solid #e2e8f0;
            max-width: 800px;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 10px;
            background-color: #f7fafc;
            border-top: 1px solid #e2e8f0;
        }
        .info-box {
            background-color: #e8f4fd;
            border-left: 5px solid #3182ce;
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
        }
        .warning-box {
            background-color: #fff5f5;
            border-left: 5px solid #e53e3e;
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 25px;
        }
        li {
            margin-bottom: 10px;
        }
        blockquote {
            background-color: #f7fafc;
            border-left: 5px solid #ff9a3c;
            padding: 25px;
            margin: 30px 0;
            font-style: italic;
            color: #2d3748;
            font-size: 1.2rem;
        }
        .related-links {
            background-color: #f1f8ff;
            padding: 25px;
            border-radius: 10px;
            margin: 40px 0;
        }
        .related-links h3 {
            margin-top: 0;
        }
        .related-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            list-style: none;
            margin-left: 0;
        }
        .related-links li {
            margin-bottom: 0;
        }
        .related-links a {
            color: #2b6cb0;
            text-decoration: none;
            padding: 10px 15px;
            display: block;
            background-color: white;
            border-radius: 6px;
            transition: all 0.3s;
            border: 1px solid #bee3f8;
        }
        .related-links a:hover {
            background-color: #ebf8ff;
            border-color: #90cdf4;
            transform: translateY(-3px);
            box-shadow: 0 5px 10px rgba(0,0,0,0.05);
        }
        .update-time {
            background-color: #f0fff4;
            padding: 15px;
            text-align: center;
            border-radius: 8px;
            margin: 30px 0;
            border: 1px solid #c6f6d5;
            color: #22543d;
        }
        .interaction-section {
            background-color: #f8f9fa;
            border-radius: 12px;
            padding: 40px;
            margin-top: 60px;
            border-top: 3px solid #adb5bd;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 40px;
            margin-top: 30px;
        }
        .rating-box, .comment-box {
            background-color: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .rating-box h3, .comment-box h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .rating-box h3 i { color: #ffc107; }
        .comment-box h3 i { color: #1a3a5f; }
        .stars {
            display: flex;
            gap: 10px;
            margin: 20px 0;
            justify-content: center;
        }
        .star {
            font-size: 2rem;
            color: #e2e8f0;
            cursor: pointer;
            transition: color 0.3s;
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        label {
            margin-bottom: 8px;
            font-weight: 600;
            color: #4a5568;
        }
        input, textarea, select {
            padding: 14px;
            border: 1px solid #cbd5e0;
            border-radius: 6px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #ff9a3c;
        }
        .submit-btn {
            background-color: #1a3a5f;
            color: white;
            border: none;
            padding: 16px;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.3s;
            font-size: 1.05rem;
        }
        .submit-btn:hover {
            background-color: #ff9a3c;
        }
        footer {
            background-color: #0a1a2a;
            color: #cbd5e0;
            padding: 60px 0 30px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: #ff9a3c;
            margin-bottom: 25px;
            font-size: 1.4rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #cbd5e0;
            text-decoration: none;
            transition: color 0.3s;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-links a:hover {
            color: #ff9a3c;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 154, 60, 0.1);
            border: 1px solid #ff9a3c;
            padding: 15px;
            margin-bottom: 15px;
            border-radius: 6px;
            transition: transform 0.3s;
        }
        friend-link:hover {
            transform: translateX(5px);
        }
        friend-link a {
            color: #ff9a3c;
            text-decoration: none;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #2d3748;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.7rem; }
            h2 { font-size: 2rem; }
            .article-content { padding: 0 25px 25px; }
        }
        @media (max-width: 768px) {
            .main-nav { display: none; }
            .hamburger { display: block; }
            h1 { font-size: 2.3rem; }
            h2 { font-size: 1.8rem; }
            .section-padding { padding: 40px 0; }
            .article-header { padding: 40px 20px; }
            .interaction-grid { grid-template-columns: 1fr; }
            .related-links ul { grid-template-columns: 1fr; }
        }
        @media (max-width: 576px) {
            .header-container { flex-direction: column; gap: 15px; }
            .article-meta { flex-direction: column; gap: 10px; }
            .search-form { flex-direction: column; }
            .search-input { border-radius: 8px; margin-bottom: 10px; }
            .search-btn { border-radius: 8px; padding: 14px; }
            h1 { font-size: 2rem; }
            .article-content { padding: 0 15px 15px; }
        }