* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #1a5276;
            --secondary-color: #e74c3c;
            --accent-color: #f39c12;
            --text-color: #333;
            --light-bg: #f8f9fa;
            --dark-bg: #2c3e50;
            --border-color: #ddd;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background-color: #fff;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary-color);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: var(--dark-bg);
            color: white;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--accent-color);
        }
        .main-nav {
            display: flex;
            gap: 25px;
        }
        .nav-link {
            color: white;
            font-weight: 600;
            padding: 5px 0;
            position: relative;
        }
        .nav-link:hover {
            color: var(--accent-color);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--accent-color);
            transition: var(--transition);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--light-bg);
            padding: 12px 20px;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb a {
            color: var(--primary-color);
        }
        .breadcrumb span {
            color: #777;
        }
        .breadcrumb i {
            margin: 0 8px;
            color: #aaa;
        }
        .hero {
            background: linear-gradient(135deg, var(--primary-color), #2e86c1);
            color: white;
            padding: 60px 20px;
            text-align: center;
            margin-bottom: 40px;
        }
        .hero h1 {
            font-size: 2.8rem;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 30px;
            opacity: 0.9;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 20px 0 40px;
        }
        .article-content {
            background: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
            color: #666;
        }
        .update-time {
            color: var(--secondary-color);
            font-weight: 600;
        }
        h1, h2, h3, h4 {
            color: var(--dark-bg);
            margin-top: 1.5em;
            margin-bottom: 0.7em;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.5rem;
        }
        h2 {
            font-size: 2rem;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent-color);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--primary-color);
        }
        h4 {
            font-size: 1.3rem;
            color: #555;
        }
        p {
            margin-bottom: 1.5em;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 500;
            color: var(--primary-color);
            background-color: var(--light-bg);
            padding: 20px;
            border-left: 4px solid var(--accent-color);
            border-radius: 0 8px 8px 0;
            margin: 25px 0;
        }
        strong {
            color: var(--primary-color);
            font-weight: 700;
        }
        .highlight {
            background-color: #fffde7;
            padding: 2px 6px;
            border-radius: 3px;
            font-weight: 600;
        }
        .feature-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 10px;
            margin: 30px 0;
            box-shadow: var(--shadow);
            border: 5px solid white;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .widget {
            background: white;
            padding: 25px;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .widget-title {
            font-size: 1.3rem;
            color: var(--dark-bg);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent-color);
        }
        .search-form {
            display: flex;
            margin-top: 10px;
        }
        .search-input {
            flex: 1;
            padding: 12px 15px;
            border: 2px solid var(--border-color);
            border-right: none;
            border-radius: 5px 0 0 5px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--primary-color);
        }
        .search-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 5px 5px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: var(--secondary-color);
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .star-rating {
            display: flex;
            gap: 5px;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            margin: 10px 0;
        }
        .star-rating .active {
            color: var(--accent-color);
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        label {
            font-weight: 600;
            color: var(--primary-color);
        }
        input, textarea, select {
            padding: 12px 15px;
            border: 2px solid var(--border-color);
            border-radius: 5px;
            font-size: 1rem;
            font-family: inherit;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(26, 82, 118, 0.1);
        }
        .submit-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 14px 25px;
            border-radius: 5px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            margin-top: 10px;
        }
        .submit-btn:hover {
            background-color: var(--secondary-color);
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed var(--border-color);
        }
        .related-links a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-color);
        }
        .related-links a:hover {
            color: var(--secondary-color);
        }
        .related-links i {
            color: var(--primary-color);
            width: 20px;
        }
        .site-footer {
            background-color: var(--dark-bg);
            color: white;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 20px;
            color: white;
        }
        .footer-about {
            opacity: 0.8;
            line-height: 1.8;
        }
        .footer-links h3, .footer-contact h3 {
            font-size: 1.3rem;
            margin-bottom: 25px;
            color: white;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-links h3::after, .footer-contact h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background-color: var(--accent-color);
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #ccc;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-links a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255,255,255,0.1);
            padding: 15px;
            border-radius: 5px;
            margin-bottom: 15px;
            border-left: 4px solid var(--accent-color);
        }
        friend-link a {
            color: white;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            opacity: 0.7;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 2.3rem;
            }
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--dark-bg);
                flex-direction: column;
                align-items: center;
                padding: 20px 0;
                gap: 0;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: var(--transition);
                z-index: 999;
            }
            .main-nav.active {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
            .nav-link {
                width: 100%;
                text-align: center;
                padding: 15px 0;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .nav-link::after {
                display: none;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .article-content {
                padding: 20px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            .hero {
                padding: 40px 15px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .header-container, .breadcrumb {
                padding-left: 15px;
                padding-right: 15px;
            }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .article-content, .widget {
            animation: fadeIn 0.8s ease-out;
        }
        .text-center { text-align: center; }
        .mb-20 { margin-bottom: 20px; }
        .mt-30 { margin-top: 30px; }
        .emoji { font-size: 1.2em; margin-right: 5px; }