:root {
            --primary: #1a237e;
            --secondary: #3949ab;
            --accent: #ff9800;
            --light: #e8eaf6;
            --dark: #0d1440;
            --text: #333;
            --text-light: #666;
            --white: #fff;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--text);
            background-color: #f8f9fa;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .btn {
            display: inline-block;
            background: var(--primary);
            color: var(--white);
            padding: 12px 24px;
            border-radius: var(--radius);
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn:hover {
            background: var(--secondary);
            transform: translateY(-2px);
            text-decoration: none;
        }
        .highlight {
            background: linear-gradient(120deg, #ffeb3b 0%, #ffeb3b 100%);
            background-repeat: no-repeat;
            background-size: 100% 0.3em;
            background-position: 0 88%;
            font-weight: 700;
            padding: 0 2px;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        header {
            background: var(--dark);
            color: var(--white);
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--white);
            text-transform: uppercase;
            letter-spacing: 1px;
            background: linear-gradient(90deg, #ff9800, #ffeb3b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo a:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .nav-desktop {
            display: flex;
            gap: 25px;
        }
        .nav-desktop a {
            color: var(--white);
            font-weight: 600;
            padding: 8px 15px;
            border-radius: var(--radius);
        }
        .nav-desktop a:hover {
            background: var(--secondary);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--white);
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: var(--dark);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 20px;
            box-shadow: var(--shadow);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: var(--white);
            padding: 15px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            font-weight: 600;
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            padding: 15px 0;
            background: var(--light);
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--text-light);
            margin: 0 5px;
        }
        main {
            padding: 40px 0;
            background: var(--white);
        }
        article {
            max-width: 900px;
            margin: 0 auto;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 20px;
            line-height: 1.2;
        }
        h2 {
            font-size: 2.2rem;
            color: var(--secondary);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--light);
        }
        h3 {
            font-size: 1.8rem;
            color: var(--dark);
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.4rem;
            color: #555;
            margin: 25px 0 12px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
            hyphens: auto;
        }
        .lead {
            font-size: 1.2rem;
            color: var(--text-light);
            font-weight: 500;
            margin-bottom: 30px;
        }
        .update-time {
            background: #e3f2fd;
            padding: 15px;
            border-radius: var(--radius);
            margin-bottom: 30px;
            font-size: 0.95rem;
            color: #1565c0;
        }
        .featured-img {
            width: 100%;
            max-width: 800px;
            margin: 30px auto;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 5px solid var(--light);
        }
        blockquote {
            background: linear-gradient(135deg, var(--light) 0%, #f3e5f5 100%);
            padding: 25px;
            border-left: 5px solid var(--accent);
            margin: 30px 0;
            font-style: italic;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 20px;
        }
        li {
            margin-bottom: 10px;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat-card {
            background: var(--light);
            padding: 25px;
            border-radius: var(--radius);
            text-align: center;
            box-shadow: var(--shadow);
        }
        .stat-card i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 15px;
        }
        .stat-card h4 {
            color: var(--primary);
            margin: 10px 0;
        }
        .search-box, .comment-box, .rating-box {
            background: #f5f7ff;
            padding: 30px;
            border-radius: var(--radius);
            margin: 40px 0;
            box-shadow: var(--shadow);
        }
        .search-box h2, .comment-box h2, .rating-box h2 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 20px;
        }
        input, textarea, select {
            width: 100%;
            padding: 15px;
            border: 2px solid #ddd;
            border-radius: var(--radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.2);
        }
        textarea {
            min-height: 150px;
            resize: vertical;
        }
        .stars {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover, .star.active {
            color: #ffc107;
        }
        .related-links-section {
            background: var(--light);
            padding: 30px;
            border-radius: var(--radius);
            margin: 40px 0;
        }
        .links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 15px;
            margin-top: 20px;
        }
        .link-item {
            background: var(--white);
            padding: 15px;
            border-radius: var(--radius);
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .link-item:hover {
            transform: translateX(5px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        footer {
            background: var(--dark);
            color: var(--white);
            padding: 50px 0 30px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: var(--white);
            margin-bottom: 20px;
            font-size: 1.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #ccc;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            padding: 10px 20px;
            border-radius: var(--radius);
            margin: 5px;
            transition: var(--transition);
        }
        friend-link a {
            color: var(--white);
            font-weight: 600;
        }
        friend-link:hover {
            background: var(--secondary);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .hamburger { display: block; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.8rem; }
            .header-inner { flex-wrap: wrap; }
            .links-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            .container { padding: 0 15px; }
            h1 { font-size: 1.8rem; }
            .btn { padding: 10px 20px; }
            .stat-card { padding: 20px; }
        }