* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            overflow-x: hidden;
        }
        a {
            color: #4a6ee0;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #ff4757;
        }
        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; }
        .highlight {
            background-color: #fffacd;
            padding: 2px 5px;
            border-radius: 3px;
        }
        .section-padding {
            padding-top: 50px;
            padding-bottom: 50px;
        }
        .mb-3 { margin-bottom: 1.5rem; }
        .mb-4 { margin-bottom: 2.5rem; }
        .site-header {
            background: linear-gradient(135deg, #0f1b3d 0%, #2a3f7a 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-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            font-family: 'Arial Black', sans-serif;
            background: linear-gradient(to right, #00d2ff, #ff8a00);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -1px;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #e0e7ff;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            color: #ffcc00;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #ffcc00;
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 80%;
                height: calc(100vh - 70px);
                background: #0f1b3d;
                transition: left 0.4s ease;
                padding: 2rem;
                box-shadow: 5px 0 15px rgba(0,0,0,0.2);
                z-index: 999;
            }
            .main-nav.active { left: 0; }
            .main-nav ul {
                flex-direction: column;
                gap: 1.5rem;
            }
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 1rem 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;
        }
        .search-container {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin: 2rem 0;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid #4a6ee0;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
        }
        .search-btn {
            background: #4a6ee0;
            color: white;
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.3s;
        }
        .search-btn:hover {
            background: #3a5ccc;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 30px 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }
        .article-header {
            border-bottom: 3px solid #ffcc00;
            padding-bottom: 20px;
            margin-bottom: 30px;
        }
        h1 {
            font-size: 2.8rem;
            color: #0f1b3d;
            line-height: 1.2;
            margin-bottom: 1rem;
        }
        .article-meta {
            color: #666;
            font-size: 0.95rem;
            display: flex;
            gap: 20px;
            margin-bottom: 1rem;
        }
        .update-time {
            color: #ff4757;
            font-weight: 600;
        }
        h2 {
            font-size: 2rem;
            color: #2a3f7a;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #e0e7ff;
        }
        h3 {
            font-size: 1.6rem;
            color: #3a5ccc;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #555;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            color: #444;
            background: #f0f8ff;
            padding: 1.5rem;
            border-left: 5px solid #4a6ee0;
            border-radius: 0 10px 10px 0;
            margin-bottom: 2.5rem;
        }
        .featured-image {
            margin: 2.5rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            max-width: 800px;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 0.8rem;
            font-size: 0.95rem;
            background: #f9f9f9;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: white;
            border-radius: 15px;
            padding: 25px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .widget-title {
            font-size: 1.4rem;
            color: #0f1b3d;
            margin-bottom: 1.5rem;
            padding-bottom: 0.7rem;
            border-bottom: 2px solid #ffcc00;
        }
        .related-links ul {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 1rem;
            padding-left: 1.5rem;
            position: relative;
        }
        .related-links li::before {
            content: '🏎️';
            position: absolute;
            left: 0;
        }
        .comment-rating-section {
            margin-top: 50px;
        }
        .comment-form, .rating-form {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: 10px;
            margin-bottom: 2rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-input, .form-textarea {
            width: 100%;
            padding: 0.9rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-input:focus, .form-textarea:focus {
            border-color: #4a6ee0;
            outline: none;
        }
        .form-textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background: #4a6ee0;
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 50px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            transition: all 0.3s;
        }
        .submit-btn:hover {
            background: #3a5ccc;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(58, 92, 204, 0.3);
        }
        .star-rating {
            display: flex;
            gap: 10px;
            font-size: 2rem;
            color: #ddd;
            margin: 1rem 0;
        }
        .star-rating .star {
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: #ffcc00;
        }
        .site-footer {
            background: #0f1b3d;
            color: #c0c9e8;
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-title {
            color: #ffcc00;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
            color: #a0b3ff;
        }
        friend-link:hover {
            color: #ffcc00;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #2a3f7a;
            font-size: 0.9rem;
            color: #8a9bd6;
        }