* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            max-width: 100%;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #1a6dcc 0%, #0d4d9c 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: 1.8rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover { color: #ffde59; }
        .my-logo i { font-size: 2rem; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.5rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 0.75rem;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: #ffde59;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.75rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb a {
            color: #1a6dcc;
            text-decoration: none;
        }
        .breadcrumb a:hover { text-decoration: underline; }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: #6c757d;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0;
        }
        @media (max-width: 992px) {
            .content-wrapper { grid-template-columns: 1fr; }
        }
        .main-article {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .article-header { margin-bottom: 2rem; }
        .article-header h1 {
            font-size: 2.8rem;
            color: #0d4d9c;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: #6c757d;
            font-size: 0.9rem;
            border-bottom: 1px solid #dee2e6;
            padding-bottom: 1rem;
            margin-bottom: 1.5rem;
        }
        .update-time { font-style: italic; }
        h2 {
            color: #1a6dcc;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e9ecef;
            font-size: 1.8rem;
        }
        h3 {
            color: #495057;
            margin: 2rem 0 1rem;
            font-size: 1.5rem;
        }
        h4 {
            color: #6c757d;
            margin: 1.5rem 0 0.8rem;
            font-size: 1.2rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 500;
            color: #1a6dcc;
            background-color: #f0f7ff;
            padding: 1.2rem;
            border-left: 4px solid #1a6dcc;
            border-radius: 0 8px 8px 0;
            margin: 2rem 0;
        }
        .highlight {
            background-color: #fff9db;
            padding: 1rem;
            border-left: 4px solid #ffde59;
            margin: 1.5rem 0;
            border-radius: 0 6px 6px 0;
        }
        .emphasis {
            font-weight: 700;
            color: #0d4d9c;
        }
        .emoji { margin-right: 0.5rem; }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 10px;
            margin: 1.5rem auto;
            display: block;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            transition: transform 0.5s ease;
        }
        .article-image:hover { transform: scale(1.01); }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #6c757d;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .content-link {
            color: #1a6dcc;
            text-decoration: underline;
            text-underline-offset: 3px;
            font-weight: 600;
        }
        .content-link:hover {
            color: #0a4292;
            text-decoration: none;
            background-color: #f0f7ff;
            padding: 2px 4px;
            border-radius: 3px;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .sidebar-widget {
            background: white;
            border-radius: 12px;
            padding: 1.5rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .sidebar h3 {
            font-size: 1.3rem;
            color: #1a6dcc;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #dee2e6;
        }
        .search-form {
            display: flex;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.8rem;
            border: 2px solid #ced4da;
            border-radius: 6px 0 0 6px;
            font-size: 1rem;
        }
        .search-button {
            background-color: #1a6dcc;
            color: white;
            border: none;
            padding: 0.8rem 1.2rem;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        .search-button:hover { background-color: #0d4d9c; }
        .rating-widget .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active { color: #ffc107; }
        .comment-form textarea {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid #ced4da;
            border-radius: 6px;
            font-family: inherit;
            margin-bottom: 0.8rem;
            resize: vertical;
        }
        .form-button {
            background-color: #28a745;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
            transition: background-color 0.3s;
            width: 100%;
        }
        .form-button:hover { background-color: #218838; }
        .score-form .form-button { background-color: #1a6dcc; }
        .score-form .form-button:hover { background-color: #0d4d9c; }
        .site-footer {
            background-color: #212529;
            color: #adb5bd;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #f8f9fa;
            margin-bottom: 1.2rem;
            font-size: 1.2rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links a {
            color: #adb5bd;
            text-decoration: none;
            line-height: 2;
            transition: color 0.3s;
        }
        .footer-links a:hover { color: white; }
        friend-link {
            display: block;
            background: #2d3748;
            padding: 1rem;
            border-radius: 6px;
            margin: 0.5rem 0;
        }
        friend-link a {
            color: #4dabf7;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #495057;
            font-size: 0.9rem;
            color: #6c757d;
        }
        @media (max-width: 768px) {
            .header-content { flex-wrap: wrap; }
            .main-nav {
                order: 3;
                width: 100%;
                margin-top: 1rem;
                display: none;
            }
            .main-nav.active { display: block; }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li { width: 100%; }
            .main-nav a {
                display: block;
                padding: 0.75rem;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .hamburger { display: block; }
            .article-header h1 { font-size: 2rem; }
            .main-article { padding: 1.5rem; }
            .content-wrapper { gap: 1.5rem; }
        }