* { 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;
        }
        img { max-width: 100%; height: auto; display: block; }
        h1 { font-size: 2.8rem; color: #1a365d; margin-bottom: 1.5rem; line-height: 1.2; }
        h2 { font-size: 2.2rem; color: #2d3748; margin: 2.5rem 0 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid #e2e8f0; }
        h3 { font-size: 1.8rem; color: #4a5568; margin: 2rem 0 0.8rem; }
        h4 { font-size: 1.4rem; color: #718096; margin: 1.5rem 0 0.5rem; }
        p { margin-bottom: 1.2rem; font-size: 1.1rem; }
        a { color: #3182ce; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #2c5282; text-decoration: underline; }
        strong { font-weight: 700; color: #2d3748; }
        em { font-style: italic; }
        .lead { font-size: 1.3rem; color: #4a5568; font-weight: 300; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin-top: 30px;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        .site-header {
            background: linear-gradient(135deg, #1a365d 0%, #2d3748 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-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover { text-decoration: none; color: #90cdf4; }
        .my-logo i { color: #f6ad55; }
        .nav-desktop { display: flex; gap: 2rem; }
        .nav-desktop a { color: #e2e8f0; font-weight: 500; }
        .nav-desktop a:hover { color: #f6ad55; }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: #2d3748;
            padding: 1rem;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            box-shadow: 0 5px 10px rgba(0,0,0,0.2);
        }
        .mobile-nav.active { display: flex; }
        .mobile-nav a {
            color: #e2e8f0;
            padding: 0.8rem 0;
            border-bottom: 1px solid #4a5568;
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .hamburger-btn { display: block; }
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #edf2f7;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #4a5568; }
        .breadcrumb span { color: #718096; }
        .hero {
            background: linear-gradient(rgba(26, 54, 93, 0.9), rgba(45, 55, 72, 0.9)), url('https://images.unsplash.com/photo-1542751371-adc38448a05e?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            color: white;
            padding: 4rem 1rem;
            text-align: center;
            border-radius: 0 0 20px 20px;
            margin-bottom: 2rem;
        }
        .hero h1 { color: white; font-size: 3rem; }
        @media (max-width: 768px) {
            .hero h1 { font-size: 2.2rem; }
            .hero { padding: 2.5rem 1rem; }
        }
        .search-box {
            background: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin: 2rem 0;
        }
        .search-form {
            display: flex;
            gap: 10px;
        }
        .search-input {
            flex-grow: 1;
            padding: 12px 15px;
            border: 2px solid #cbd5e0;
            border-radius: 8px;
            font-size: 1rem;
        }
        .search-btn {
            background-color: #3182ce;
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s;
        }
        .search-btn:hover { background-color: #2c5282; }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.06);
        }
        .article-img {
            width: 100%;
            border-radius: 10px;
            margin: 2rem auto;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }
        .info-box {
            background: #ebf8ff;
            border-left: 5px solid #3182ce;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .tip { background: #fefcbf; border-left-color: #d69e2e; }
        .warning { background: #fed7d7; border-left-color: #e53e3e; }
        .link-list { padding-left: 1.5rem; margin: 1rem 0; }
        .link-list li { margin-bottom: 0.5rem; }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }
        .sidebar-widget {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .sidebar-title {
            font-size: 1.3rem;
            color: #1a365d;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e2e8f0;
        }
        .rating-stars { color: #f6ad55; font-size: 1.5rem; margin: 10px 0; }
        .user-review { border-top: 1px solid #e2e8f0; padding-top: 1rem; margin-top: 1rem; }
        .user-review:first-child { border-top: none; padding-top: 0; }
        .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .form-input, .form-textarea {
            padding: 12px;
            border: 1px solid #cbd5e0;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
        }
        .form-textarea { min-height: 120px; resize: vertical; }
        .form-submit {
            background-color: #38a169;
            color: white;
            border: none;
            padding: 12px;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
        }
        .form-submit:hover { background-color: #2f855a; }
        .star-rating {
            display: flex;
            gap: 5px;
            justify-content: center;
            margin: 10px 0;
        }
        .star-rating input { display: none; }
        .star-rating label {
            font-size: 2rem;
            color: #cbd5e0;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label { color: #f6ad55; }
        .site-footer {
            background: #1a202c;
            color: #a0aec0;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-logo { font-size: 1.8rem; color: white; margin-bottom: 1rem; }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin: 1rem 0;
        }
        friend-link {
            display: inline-block;
            background: #2d3748;
            color: #90cdf4;
            padding: 8px 15px;
            border-radius: 6px;
            font-size: 0.9rem;
        }
        friend-link:hover { background: #4a5568; color: white; text-decoration: none; }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #2d3748;
            font-size: 0.9rem;
            color: #718096;
        }
        @media (max-width: 768px) {
            .container { padding: 0 15px; }
            .article-content { padding: 1.5rem; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .search-form { flex-direction: column; }
            .search-btn { padding: 12px; }
        }
        .hover-card {
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .hover-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .btn {
            display: inline-block;
            padding: 10px 20px;
            background: #3182ce;
            color: white;
            border-radius: 8px;
            font-weight: 600;
            text-align: center;
            transition: all 0.3s;
        }
        .btn:hover {
            background: #2c5282;
            text-decoration: none;
            transform: scale(1.05);
        }
        .tag {
            display: inline-block;
            background: #e2e8f0;
            color: #4a5568;
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 0.85rem;
            margin-right: 8px;
            margin-bottom: 8px;
        }