* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f0f7ff;
            color: #333;
            line-height: 1.7;
            max-width: 100vw;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #e74c3c;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #c0392b;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(135deg, #FF9800, #F57C00);
            color: white;
            padding: 12px 25px;
            border-radius: 50px;
            font-weight: bold;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 10px rgba(255, 152, 0, 0.3);
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(255, 152, 0, 0.4);
        }
        header {
            background: linear-gradient(90deg, #1a237e, #283593);
            color: white;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 900;
            color: #FFD700;
            text-decoration: none;
            display: flex;
            align-items: center;
        }
        .logo i {
            margin-right: 10px;
            color: #FF9800;
        }
        .logo span {
            color: #4FC3F7;
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .desktop-nav a {
            color: white;
            font-weight: 600;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        .desktop-nav a:hover {
            border-bottom-color: #FFD700;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .mobile-nav {
            display: none;
            background: #1a237e;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 20px;
            box-shadow: 0 10px 15px rgba(0,0,0,0.2);
        }
        .mobile-nav.active {
            display: block;
        }
        .mobile-nav ul {
            list-style: none;
        }
        .mobile-nav li {
            margin: 15px 0;
        }
        .mobile-nav a {
            color: white;
            font-size: 1.2rem;
            display: block;
            padding: 10px;
            border-left: 4px solid #FFD700;
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #e3f2fd;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #5c6bc0;
        }
        .breadcrumb span {
            color: #78909c;
        }
        .search-section {
            background: white;
            padding: 30px;
            border-radius: 15px;
            margin: 25px auto;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
            text-align: center;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-form input {
            flex: 1;
            padding: 15px;
            border: 2px solid #bbdefb;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
        }
        .search-form button {
            background: linear-gradient(135deg, #1a237e, #283593);
            color: white;
            border: none;
            padding: 0 30px;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-weight: bold;
        }
        main {
            padding: 30px 0;
        }
        article {
            background: white;
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
            margin-bottom: 40px;
        }
        h1 {
            color: #1a237e;
            font-size: 2.8rem;
            margin-bottom: 20px;
            line-height: 1.2;
            border-left: 8px solid #FF9800;
            padding-left: 20px;
        }
        h2 {
            color: #283593;
            font-size: 2rem;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 3px dashed #C5CAE9;
        }
        h3 {
            color: #3949ab;
            font-size: 1.6rem;
            margin: 30px 0 15px;
        }
        h4 {
            color: #5c6bc0;
            font-size: 1.3rem;
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 1.5em;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            color: #555;
            background: #f9fbe7;
            padding: 20px;
            border-radius: 10px;
            margin-bottom: 30px;
            border-left: 5px solid #CDDC39;
        }
        .highlight-box {
            background: linear-gradient(135deg, #E3F2FD, #BBDEFB);
            border-left: 6px solid #2196F3;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 10px 10px 0;
        }
        .tip-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .tip-card {
            background: white;
            border: 2px solid #E8EAF6;
            border-radius: 10px;
            padding: 20px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .tip-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .tip-icon {
            font-size: 2.5rem;
            color: #FF9800;
            margin-bottom: 15px;
        }
        .image-container {
            margin: 35px 0;
            text-align: center;
        }
        .image-container img {
            border-radius: 15px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.15);
            border: 5px solid white;
        }
        .caption {
            font-style: italic;
            color: #666;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        blockquote {
            font-style: italic;
            color: #5a5a5a;
            border-left: 5px solid #FF9800;
            padding-left: 20px;
            margin: 25px 0;
            background: #FFFDE7;
            padding: 20px;
            border-radius: 0 10px 10px 0;
        }
        .related-links {
            background: #F3E5F5;
            padding: 25px;
            border-radius: 10px;
            margin: 30px 0;
        }
        .related-links h3 {
            color: #7B1FA2;
        }
        .related-links ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-top: 15px;
        }
        .related-links li {
            background: white;
            padding: 10px 20px;
            border-radius: 50px;
            border: 1px solid #CE93D8;
        }
        .rating-section, .comments-section {
            background: white;
            padding: 30px;
            border-radius: 15px;
            margin: 30px 0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.05);
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 20px;
            max-width: 600px;
            margin-top: 20px;
        }
        .stars {
            display: flex;
            gap: 10px;
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
        }
        .stars .star:hover,
        .stars .star.active {
            color: #FFD700;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .form-group label {
            font-weight: bold;
            color: #555;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 12px;
            border: 2px solid #bbdefb;
            border-radius: 8px;
            font-size: 1rem;
        }
        .form-group textarea {
            min-height: 150px;
            resize: vertical;
        }
        .update-time {
            text-align: right;
            font-size: 0.9rem;
            color: #78909c;
            margin-top: 40px;
            padding-top: 15px;
            border-top: 1px solid #e0e0e0;
        }
        footer {
            background: linear-gradient(90deg, #1a237e, #283593);
            color: white;
            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-section h3 {
            color: #FFD700;
            margin-bottom: 20px;
            font-size: 1.5rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #bbdefb;
        }
        .friend-links {
            background: rgba(255, 255, 255, 0.1);
            padding: 20px;
            border-radius: 10px;
        }
        friend-link {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            padding: 10px 20px;
            margin: 5px;
            border-radius: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #3949ab;
            color: #bbdefb;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.4rem;
            }
            .header-container, .footer-content {
                flex-direction: column;
                text-align: center;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input {
                border-radius: 50px;
                margin-bottom: 10px;
            }
            .search-form button {
                border-radius: 50px;
                padding: 15px;
            }
            .tip-list {
                grid-template-columns: 1fr;
            }
            .related-links ul {
                flex-direction: column;
            }
        }