* {
            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: 1.7;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            color: #1a5fb4;
            text-decoration: none;
            transition: color 0.3s ease, background-color 0.3s ease;
        }
        a:hover {
            color: #0d4a9c;
            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(135deg, #1a365d 0%, #2d5a9a 100%);
            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: #fff;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo span {
            color: #63b3ed;
        }
        .my-logo:hover {
            text-decoration: none;
            color: #fff;
        }
        .main-nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .nav-links a {
            color: #e2e8f0;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
        }
        .nav-links a:hover, .nav-links a:focus {
            background-color: rgba(255, 255, 255, 0.15);
            text-decoration: none;
            color: white;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #edf2f7;
            font-size: 0.9rem;
            color: #4a5568;
        }
        .breadcrumb a {
            color: #4a5568;
        }
        .breadcrumb a:hover {
            color: #1a5fb4;
        }
        .breadcrumb .separator {
            margin: 0 8px;
            color: #a0aec0;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-body {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .widget {
            background: white;
            border-radius: 10px;
            padding: 1.5rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
        }
        .widget h3 {
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #63b3ed;
            color: #2d3748;
            font-size: 1.3rem;
        }
        h1, h2, h3, h4 {
            color: #1a365d;
            line-height: 1.3;
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-weight: 700;
        }
        h1 {
            font-size: 2.8rem;
            margin-top: 0;
            color: #1a365d;
            border-bottom: 3px solid #63b3ed;
            padding-bottom: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: #2d5a9a;
        }
        h3 {
            font-size: 1.6rem;
            color: #3182ce;
        }
        h4 {
            font-size: 1.3rem;
            color: #4a5568;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: #2d3748;
            margin-bottom: 2rem;
            padding: 1.5rem;
            background-color: #ebf8ff;
            border-left: 5px solid #3182ce;
            border-radius: 0 8px 8px 0;
        }
        .highlight {
            background-color: #fffacd;
            padding: 0.2rem 0.4rem;
            border-radius: 3px;
            font-weight: 600;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        blockquote {
            border-left: 4px solid #63b3ed;
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #4a5568;
            background-color: #f7fafc;
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        .featured-image {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 800px;
        }
        .featured-image img {
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            transition: transform 0.5s ease;
        }
        .featured-image img:hover {
            transform: scale(1.01);
        }
        .image-caption {
            margin-top: 0.8rem;
            font-size: 0.95rem;
            color: #718096;
            font-style: italic;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        .content-link {
            color: #2b6cb0;
            font-weight: 600;
            border-bottom: 1px dotted #2b6cb0;
        }
        .content-link:hover {
            border-bottom: 2px solid #2b6cb0;
            text-decoration: none;
        }
        .update-time {
            display: inline-block;
            background-color: #e6fffa;
            color: #234e52;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            font-size: 0.9rem;
            margin-bottom: 2rem;
            font-weight: 500;
        }
        .update-time i {
            margin-right: 8px;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        label {
            font-weight: 600;
            color: #2d3748;
        }
        input, textarea, select {
            padding: 0.8rem 1rem;
            border: 1px solid #cbd5e0;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #3182ce;
            box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.2);
        }
        .btn {
            padding: 0.9rem 1.8rem;
            background-color: #3182ce;
            color: white;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: background-color 0.3s ease, transform 0.2s ease;
        }
        .btn:hover {
            background-color: #2b6cb0;
            transform: translateY(-2px);
        }
        .btn:active {
            transform: translateY(0);
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #e2e8f0;
            cursor: pointer;
        }
        .stars .star:hover,
        .stars .star.active {
            color: #f6ad55;
        }
        .related-links {
            list-style: none;
            margin-left: 0;
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-left: 1.5rem;
            position: relative;
        }
        .related-links li:before {
            content: "→";
            position: absolute;
            left: 0;
            color: #3182ce;
            font-weight: bold;
        }
        .related-links a {
            color: #4a5568;
        }
        .related-links a:hover {
            color: #3182ce;
            padding-left: 5px;
            transition: padding-left 0.2s ease;
        }
        .site-footer {
            background-color: #1a365d;
            color: #cbd5e0;
            padding: 3rem 0 2rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h4 {
            color: #fff;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #a0aec0;
        }
        .footer-links a:hover {
            color: #63b3ed;
        }
        friend-link {
            display: inline-block;
            background-color: #2d3748;
            color: #e2e8f0;
            padding: 0.5rem 1rem;
            margin-right: 0.8rem;
            margin-bottom: 0.8rem;
            border-radius: 6px;
            text-decoration: none;
            transition: background-color 0.3s ease;
        }
        friend-link:hover {
            background-color: #4a5568;
            text-decoration: none;
            color: white;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #2d3748;
            color: #a0aec0;
            font-size: 0.9rem;
            width: 100%;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: #1a365d;
                padding: 1.5rem;
                box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
                z-index: 999;
            }
            .nav-links.active {
                display: flex;
            }
            .header-container {
                flex-wrap: wrap;
            }
            .my-logo {
                font-size: 1.8rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .article-body {
                padding: 1.5rem;
            }
            .main-content {
                gap: 1.5rem;
            }
        }