* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.6;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: #2c5aa0;
            text-decoration: none;
            transition: color 0.3s;
        }
        a:hover {
            color: #e63946;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #1e3c72, #2a5298);
            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: 2.2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: #FFD700;
        }
        .my-logo:hover {
            color: #FFD700;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0.75rem;
            border-radius: 4px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a:hover, .main-nav a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: #FFD700;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 0;
            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: #6c757d;
        }
        main {
            flex: 1;
            padding: 2rem 0;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        article {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        h1 {
            color: #1e3c72;
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #FFD700;
            padding-bottom: 0.5rem;
        }
        h2 {
            color: #2a5298;
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e9ecef;
        }
        h3 {
            color: #2c5aa0;
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: #444;
            font-size: 1.3rem;
            margin: 1.5rem 0 0.8rem;
        }
        .intro {
            font-size: 1.2rem;
            color: #555;
            background: #f1f8ff;
            padding: 1.5rem;
            border-left: 5px solid #2c5aa0;
            border-radius: 0 8px 8px 0;
            margin-bottom: 2.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fffacd;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid #FFD700;
            margin: 2rem 0;
        }
        .highlight strong {
            color: #1e3c72;
        }
        .stats-box {
            background: linear-gradient(to right, #e3f2fd, #bbdefb);
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
        }
        .stat {
            text-align: center;
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: #1e3c72;
            display: block;
        }
        .stat-label {
            font-size: 1rem;
            color: #555;
            font-weight: 600;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        blockquote {
            font-style: italic;
            color: #555;
            border-left: 4px solid #e63946;
            padding-left: 1.5rem;
            margin: 2rem 0;
        }
        .img-container {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 800px;
        }
        .img-container img {
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            border: 1px solid #ddd;
        }
        .img-caption {
            font-size: 0.95rem;
            color: #666;
            margin-top: 0.8rem;
            font-style: italic;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            border-radius: 10px;
            padding: 1.8rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .widget-title {
            color: #1e3c72;
            font-size: 1.4rem;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #FFD700;
        }
        .search-form {
            display: flex;
        }
        .search-input {
            flex: 1;
            padding: 0.9rem 1rem;
            border: 2px solid #ddd;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
            outline: none;
        }
        .search-input:focus {
            border-color: #2c5aa0;
        }
        .search-button {
            background: #2c5aa0;
            color: white;
            border: none;
            border-radius: 0 8px 8px 0;
            padding: 0 1.5rem;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s;
        }
        .search-button:hover {
            background: #1e3c72;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 2rem;
            color: #ddd;
            margin-bottom: 1rem;
            cursor: pointer;
        }
        .stars .star {
            transition: color 0.2s;
        }
        .stars .star:hover,
        .stars .star.active {
            color: #FFD700;
        }
        .rating-form textarea,
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            margin-bottom: 1rem;
            font-size: 1rem;
            resize: vertical;
            min-height: 120px;
        }
        .rating-form button,
        .comment-form button {
            background: #2c5aa0;
            color: white;
            border: none;
            padding: 0.9rem 1.8rem;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: background 0.3s;
            width: 100%;
        }
        .rating-form button:hover,
        .comment-form button:hover {
            background: #1e3c72;
        }
        .related-links ul {
            list-style: none;
            margin-left: 0;
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed #eee;
        }
        .related-links li:last-child {
            border-bottom: none;
        }
        .related-links a {
            color: #444;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0.4rem 0;
        }
        .related-links a:hover {
            color: #e63946;
        }
        .related-links i {
            color: #2c5aa0;
        }
        footer {
            background: #1a1a2e;
            color: #ccc;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-section h4 {
            color: #FFD700;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
        }
        .footer-links ul {
            list-style: none;
            margin-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: #aaa;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: #FFD700;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 1rem;
            border-radius: 6px;
            margin-bottom: 1rem;
            border-left: 4px solid #2c5aa0;
        }
        friend-link a {
            color: #FFD700;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #333;
            font-size: 0.9rem;
            color: #888;
        }
        .update-time {
            color: #FFD700;
            font-weight: 600;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .main-nav ul {
                gap: 1rem;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .main-nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.4s ease;
            }
            .main-nav.active {
                max-height: 300px;
                margin-top: 1rem;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0.5rem;
            }
            .main-nav a {
                padding: 0.8rem;
                justify-content: center;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            article {
                padding: 1.8rem;
            }
        }