:root {
            --primary-blue: #1a5f7a;
            --secondary-blue: #57a2b8;
            --accent-yellow: #ffc93c;
            --accent-orange: #ff6b35;
            --light-bg: #f8f9fa;
            --dark-text: #212529;
            --light-text: #6c757d;
            --border-radius: 8px;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: var(--light-bg);
            color: var(--dark-text);
            line-height: 1.6;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-orange);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-blue), #0d455c);
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow);
            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;
            background: linear-gradient(to right, var(--accent-yellow), var(--accent-orange));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -1px;
        }
        .my-logo a {
            color: inherit;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--accent-yellow);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 3px;
            background: var(--accent-yellow);
            bottom: 0;
            left: 0;
            transition: width 0.3s;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .burger {
            display: none;
            cursor: pointer;
            font-size: 1.8rem;
            color: white;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 1rem 0;
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: var(--light-text);
        }
        .breadcrumb a:hover {
            color: var(--primary-blue);
        }
        .breadcrumb span {
            color: var(--light-text);
            margin: 0 0.5rem;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 3rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .article-content h1 {
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            color: var(--primary-blue);
            line-height: 1.2;
        }
        .article-content h2 {
            font-size: 2rem;
            margin: 2.5rem 0 1rem;
            color: var(--primary-blue);
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--secondary-blue);
        }
        .article-content h3 {
            font-size: 1.5rem;
            margin: 2rem 0 0.8rem;
            color: var(--secondary-blue);
        }
        .article-content h4 {
            font-size: 1.2rem;
            margin: 1.5rem 0 0.5rem;
            color: var(--dark-text);
        }
        .article-content p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .article-content strong {
            color: var(--primary-blue);
            font-weight: 700;
        }
        .article-content em {
            color: var(--accent-orange);
            font-style: italic;
        }
        .highlight-box {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            border-left: 5px solid var(--accent-orange);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .featured-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .link-list {
            background: #f1f8ff;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
        }
        .link-list ul {
            list-style: none;
            columns: 2;
        }
        .link-list li {
            margin-bottom: 0.8rem;
            padding-left: 1.5rem;
            position: relative;
        }
        .link-list li:before {
            content: '🎯';
            position: absolute;
            left: 0;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background: white;
            padding: 1.8rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .widget h3 {
            color: var(--primary-blue);
            margin-bottom: 1.2rem;
            font-size: 1.4rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .widget h3 i {
            color: var(--accent-orange);
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 0.8rem 1rem;
            border: 2px solid var(--secondary-blue);
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-form button {
            background: var(--secondary-blue);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: var(--primary-blue);
        }
        .rating-form label,
        .comment-form label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark-text);
        }
        .rating-form input,
        .rating-form select,
        .comment-form input,
        .comment-form textarea {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid #ced4da;
            border-radius: var(--border-radius);
            font-size: 1rem;
        }
        .comment-form textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background: linear-gradient(to right, var(--accent-orange), var(--accent-yellow));
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: var(--border-radius);
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            width: 100%;
        }
        .submit-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(255, 107, 53, 0.3);
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 1.8rem;
            color: #ffc107;
        }
        .stars i {
            cursor: pointer;
            transition: var(--transition);
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        .update-time {
            font-size: 0.9rem;
            color: var(--light-text);
            text-align: center;
            margin-top: 1rem;
        }
        .site-footer {
            background: var(--dark-text);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 3rem;
        }
        @media (max-width: 768px) {
            .footer-container {
                grid-template-columns: 1fr;
                text-align: center;
            }
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-yellow);
            margin-bottom: 1rem;
        }
        .footer-links h4 {
            color: var(--accent-yellow);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #adb5bd;
        }
        .footer-links a:hover {
            color: var(--accent-yellow);
        }
        friend-link {
            display: block;
            background: #2c3e50;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin-top: 2rem;
        }
        friend-link h4 {
            color: var(--accent-yellow);
            margin-bottom: 1rem;
        }
        friend-link a {
            color: var(--secondary-blue);
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #495057;
            color: #adb5bd;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: var(--primary-blue);
                padding: 1rem;
                box-shadow: var(--shadow);
            }
            .main-nav.active ul {
                display: flex;
            }
            .burger {
                display: block;
            }
            .article-content {
                padding: 1.5rem;
            }
            .article-content h1 {
                font-size: 2.2rem;
            }
            .article-content h2 {
                font-size: 1.7rem;
            }
            .link-list ul {
                columns: 1;
            }
        }