* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        h1, h2, h3, h4 {
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 1rem;
            color: #1a365d;
        }
        h1 {
            font-size: 2.5rem;
            margin-top: 1.5rem;
        }
        h2 {
            font-size: 2rem;
            margin-top: 2.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e2e8f0;
        }
        h3 {
            font-size: 1.5rem;
            margin-top: 2rem;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a365d 0%, #2d4a7c 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;
        }
        .logo a {
            color: white;
            text-decoration: none;
            font-size: 1.8rem;
            font-weight: 700;
            display: flex;
            align-items: center;
        }
        .logo i {
            margin-right: 10px;
            color: #00c853;
        }
        .desktop-nav {
            display: flex;
            gap: 2rem;
        }
        .desktop-nav a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }
        .desktop-nav a:hover {
            color: #00c853;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: #1a365d;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: white;
            text-decoration: none;
            padding: 0.8rem 0;
            border-bottom: 1px solid #2d4a7c;
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #e2e8f0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #4a5568;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: #718096;
        }
        main {
            background: white;
            padding: 2rem 0;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.05);
            border-radius: 8px;
            margin: 2rem auto;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 1px solid #e2e8f0;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            margin-top: 1rem;
            color: #718096;
            font-size: 0.9rem;
        }
        .article-meta i {
            margin-right: 5px;
        }
        .article-content {
            padding: 0 2rem;
        }
        .highlight-box {
            background: linear-gradient(to right, #f0f9ff, #e6f7ff);
            border-left: 4px solid #1890ff;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .warning-box {
            background: #fff7e6;
            border-left: 4px solid #faad14;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .tip-box {
            background: #f6ffed;
            border-left: 4px solid #52c41a;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .image-container {
            margin: 2.5rem 0;
            text-align: center;
        }
        .article-image {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .image-caption {
            font-style: italic;
            color: #718096;
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .content-link {
            color: #1890ff;
            text-decoration: none;
            font-weight: 500;
        }
        .content-link:hover {
            text-decoration: underline;
        }
        .interactive-section {
            background: #f8f9fa;
            border-radius: 12px;
            padding: 2.5rem;
            margin: 3rem 0;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
        }
        .search-box, .comment-form, .rating-form {
            margin-bottom: 2.5rem;
        }
        .section-title {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 1.5rem;
        }
        .section-title i {
            color: #1890ff;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        input, textarea, select {
            padding: 0.8rem 1rem;
            border: 1px solid #d9d9d9;
            border-radius: 6px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #1890ff;
            box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
        }
        button {
            background: linear-gradient(135deg, #1890ff 0%, #096dd9 100%);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        button:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(24, 144, 255, 0.3);
        }
        .star-rating {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #d9d9d9;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #ffc107;
        }
        .footer-links {
            background: #2d3748;
            padding: 3rem 0;
        }
        .web-link {
            display: inline-block;
            margin: 0.5rem 1rem 0.5rem 0;
        }
        .web-link a {
            color: #cbd5e0;
            text-decoration: none;
            padding: 0.5rem 1rem;
            background: #4a5568;
            border-radius: 4px;
            transition: all 0.3s;
        }
        .web-link a:hover {
            background: #1890ff;
            color: white;
        }
        footer {
            background: #1a202c;
            color: #cbd5e0;
            padding: 2rem 0;
            text-align: center;
        }
        .footer-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1.5rem;
        }
        .social-links {
            display: flex;
            gap: 1rem;
        }
        .social-links a {
            color: #cbd5e0;
            font-size: 1.2rem;
            transition: color 0.3s;
        }
        .social-links a:hover {
            color: #1890ff;
        }
        .copyright {
            font-size: 0.9rem;
            color: #a0aec0;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .article-content {
                padding: 0 1rem;
            }
            .interactive-section {
                padding: 1.5rem;
            }
            .header-content, .footer-content {
                flex-direction: column;
                text-align: center;
                gap: 1rem;
            }
            .article-meta {
                flex-direction: column;
                gap: 0.5rem;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .container {
                padding: 0 30px;
            }
            .article-content {
                padding: 0 1.5rem;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.6s ease-out;
        }
        .text-bold {
            font-weight: 700;
        }
        .text-highlight {
            background: linear-gradient(120deg, #ffec3d 0%, #ffec3d 100%);
            padding: 0 4px;
        }
        .emoji {
            font-size: 1.2em;
            margin: 0 2px;
        }