* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { color: #2c6aa0; text-decoration: none; transition: color 0.3s, transform 0.2s; }
        a:hover { color: #1a4a72; transform: translateY(-2px); }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: #1a365d;
            color: white;
            padding: 1.2rem 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;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(to right, #63b3ed, #90cdf4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 1px;
        }
        .my-logo:hover { transform: scale(1.05); }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #cbd5e0;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
        }
        .main-nav a:hover, .main-nav a.active {
            background: #2c5282;
            color: white;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background: #edf2f7;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: #718096;
        }
        .hero {
            text-align: center;
            padding: 3rem 1rem;
            background: linear-gradient(rgba(255,255,255,0.95), rgba(255,255,255,0.95)), url('https://images.unsplash.com/photo-1635070041078-e363dbe005cb?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover;
            border-radius: 12px;
            margin: 2rem 0;
        }
        .hero h1 {
            font-size: 3.2rem;
            color: #1a365d;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .search-form {
            max-width: 600px;
            margin: 2rem auto;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 6px 20px rgba(44, 106, 160, 0.2);
        }
        .search-form input {
            flex-grow: 1;
            padding: 1.2rem 1.8rem;
            border: none;
            font-size: 1.1rem;
        }
        .search-form button {
            background: #2c6aa0;
            color: white;
            border: none;
            padding: 0 2.5rem;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s;
        }
        .search-form button:hover { background: #1a4a72; }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        .article-body {
            background: white;
            padding: 2.5rem;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }
        .article-body h2 {
            color: #1a365d;
            margin-top: 2.5rem;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #63b3ed;
        }
        .article-body h3 {
            color: #2c5282;
            margin-top: 2rem;
            margin-bottom: 1rem;
        }
        .article-body h4 {
            color: #4a5568;
            margin-top: 1.5rem;
            margin-bottom: 0.8rem;
        }
        .article-body p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .article-body strong {
            color: #1a365d;
            background-color: #e6fffa;
            padding: 0 4px;
        }
        .featured-img {
            float: right;
            margin: 0 0 1.5rem 2rem;
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            max-width: 400px;
        }
        @media (max-width: 768px) {
            .featured-img {
                float: none;
                margin: 1.5rem auto;
                max-width: 100%;
            }
        }
        .update-time {
            font-style: italic;
            color: #718096;
            border-left: 4px solid #cbd5e0;
            padding-left: 1rem;
            margin: 2rem 0;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 6px 15px rgba(0,0,0,0.05);
        }
        .widget h3 {
            color: #1a365d;
            margin-bottom: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #cbd5e0;
            cursor: pointer;
        }
        .rating-stars .active { color: #f6ad55; }
        .form-input, .form-textarea {
            padding: 0.9rem;
            border: 1px solid #cbd5e0;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
        }
        .form-textarea { min-height: 120px; resize: vertical; }
        .form-submit {
            background: #38a169;
            color: white;
            border: none;
            padding: 1rem;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }
        .form-submit:hover { background: #2f855a; }
        .related-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.2rem;
            margin: 2rem 0;
        }
        .related-link {
            background: #ebf8ff;
            padding: 1.2rem;
            border-radius: 10px;
            border-left: 5px solid #2c6aa0;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .related-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(44, 106, 160, 0.15);
        }
        .site-footer {
            background: #1a202c;
            color: #cbd5e0;
            padding: 3rem 0 1.5rem;
            margin-top: auto;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: #63b3ed;
            margin-bottom: 1rem;
        }
        friend-link {
            display: block;
            padding: 0.8rem 0;
            border-bottom: 1px dashed #4a5568;
            color: #90cdf4;
        }
        friend-link:hover { color: white; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2d3748;
            font-size: 0.9rem;
            color: #a0aec0;
        }
        @media (max-width: 768px) {
            .header-content { flex-wrap: wrap; }
            .main-nav {
                width: 100%;
                order: 3;
                margin-top: 1.5rem;
                display: none;
            }
            .main-nav.active { display: block; }
            .main-nav ul {
                flex-direction: column;
                gap: 0.8rem;
            }
            .hamburger { display: block; }
            .hero h1 { font-size: 2.5rem; }
            .search-form { flex-direction: column; border-radius: 12px; }
            .search-form input, .search-form button { width: 100%; padding: 1.2rem; border-radius: 0; }
            .article-body { padding: 1.8rem; }
        }