* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: #0056b3;
            text-decoration: none;
            transition: color 0.3s ease, background-color 0.3s ease;
        }
        a:hover {
            color: #003d82;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section-spacing {
            padding: 60px 0;
        }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mb-3 { margin-bottom: 3rem; }
        .mt-2 { margin-top: 2rem; }
        .site-header {
            background: linear-gradient(135deg, #0d3b66 0%, #1a5f9e 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 a {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: #f8c300;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.5rem;
        }
        .main-nav a {
            color: #e6f2ff;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
        }
        .main-nav a:hover, .main-nav a.active {
            background-color: rgba(255,255,255,0.15);
            color: white;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb a {
            color: #555;
        }
        .breadcrumb a:hover {
            color: #0d3b66;
        }
        .breadcrumb span {
            color: #777;
            margin: 0 5px;
        }
        .hero {
            background: linear-gradient(rgba(13, 59, 102, 0.85), rgba(26, 95, 158, 0.9)), url('https://images.unsplash.com/photo-1575361204480-aadea25e6e68?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            color: white;
            padding: 5rem 0;
            text-align: center;
            border-bottom: 5px solid #f8c300;
        }
        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 5px rgba(0,0,0,0.5);
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 2rem;
        }
        .content-area {
            flex: 1;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.07);
        }
        article h1, article h2, article h3, article h4 {
            color: #0d3b66;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        article h1 { font-size: 2.5rem; margin-top: 0; }
        article h2 { font-size: 2rem; padding-bottom: 0.5rem; border-bottom: 2px solid #e9ecef; }
        article h3 { font-size: 1.6rem; }
        article h4 { font-size: 1.3rem; color: #1a5f9e; }
        article p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        article strong {
            color: #0d3b66;
            font-weight: 700;
        }
        .highlight-box {
            background-color: #f0f8ff;
            border-left: 5px solid #f8c300;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .related-links {
            margin: 2rem 0;
            padding: 1.5rem;
            background: #f8f9fa;
            border-radius: 8px;
        }
        .related-links h3 {
            margin-top: 0;
        }
        .related-links ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .related-links li a {
            display: block;
            padding: 0.8rem 1.2rem;
            background: white;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-weight: 600;
        }
        .related-links li a:hover {
            background: #0d3b66;
            color: white;
            border-color: #0d3b66;
        }
        .feature-img {
            width: 100%;
            border-radius: 10px;
            margin: 2rem auto;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            border: 1px solid #eee;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            padding: 1.8rem;
            border-radius: 10px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
        }
        .sidebar-widget h3 {
            color: #0d3b66;
            margin-top: 0;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #f8c300;
            font-size: 1.4rem;
        }
        .search-form input {
            width: 100%;
            padding: 0.9rem;
            border: 1px solid #ccc;
            border-radius: 6px 0 0 6px;
            font-size: 1rem;
        }
        .search-form button {
            width: 100%;
            margin-top: 0.8rem;
            padding: 0.9rem;
            background: #0d3b66;
            color: white;
            border: none;
            border-radius: 6px;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background: #1a5f9e;
        }
        .rating-widget .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 1.8rem;
            color: #ffc107;
        }
        .rating-widget button {
            width: 100%;
            padding: 0.8rem;
            background: #28a745;
            color: white;
            border: none;
            border-radius: 6px;
            cursor: pointer;
        }
        .update-time {
            font-size: 0.9rem;
            color: #666;
            font-style: italic;
        }
        .comments-section {
            margin-top: 4rem;
            padding-top: 2rem;
            border-top: 2px solid #e9ecef;
        }
        .comment-form input, .comment-form textarea {
            width: 100%;
            padding: 0.9rem;
            margin-bottom: 1rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
        }
        .comment-form button {
            padding: 1rem 2rem;
            background: #0d3b66;
            color: white;
            border: none;
            border-radius: 6px;
            font-weight: bold;
            cursor: pointer;
        }
        .comment-list .comment {
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 1.5rem;
            border-left: 4px solid #1a5f9e;
        }
        .site-footer {
            background: #0d3b66;
            color: #e6f2ff;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-widget h4 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
            position: relative;
            padding-bottom: 0.7rem;
        }
        .footer-widget h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 40px;
            height: 3px;
            background: #f8c300;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #b3d4fc;
            display: block;
            padding: 0.3rem 0;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin: 1rem 0;
            padding: 1rem;
            background: rgba(255,255,255,0.05);
            border-radius: 6px;
            border-left: 3px solid #f8c300;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #1a5f9e;
            font-size: 0.9rem;
            color: #a3c8f0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 2.5rem;
            }
        }
        @media (max-width: 768px) {
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #0d3b66;
                padding: 1rem;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            .main-nav.active ul {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .header-container {
                flex-wrap: wrap;
            }
            article {
                padding: 1.5rem;
            }
            .hero {
                padding: 3rem 0;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .related-links ul {
                flex-direction: column;
            }
        }