* { 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: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { text-decoration: none; color: #0066cc; transition: color 0.3s; }
        a:hover { color: #ff6600; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
        .site-header {
            background: #002244;
            color: #fff;
            padding: 15px 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: 2.2rem;
            font-weight: 900;
            color: #ff6600;
            text-transform: uppercase;
            letter-spacing: 2px;
            display: flex;
            align-items: center;
        }
        .my-logo i { margin-right: 10px; }
        .my-logo span { color: #fff; }
        .my-logo:hover { color: #fff; }
        .my-logo:hover span { color: #ff6600; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            color: #fff;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 4px;
        }
        .main-nav a:hover {
            background: #ff6600;
            color: #002244;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 15px 0;
            background: #e9f0f7;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #555; }
        .breadcrumb a:hover { color: #ff6600; }
        .search-box {
            margin: 30px auto;
            max-width: 600px;
            padding: 20px;
            background: #fff;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 12px 15px;
            border: 2px solid #0066cc;
            border-radius: 6px 0 0 6px;
            font-size: 1rem;
        }
        .search-form button {
            background: #0066cc;
            color: #fff;
            border: none;
            padding: 12px 25px;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s;
        }
        .search-form button:hover { background: #ff6600; }
        main { flex: 1; padding: 30px 0; }
        article {
            background: #fff;
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            margin-bottom: 40px;
        }
        h1 {
            font-size: 2.8rem;
            color: #002244;
            margin-bottom: 20px;
            line-height: 1.2;
            border-bottom: 4px solid #ff6600;
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2rem;
            color: #0066cc;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #eaeaea;
        }
        h3 {
            font-size: 1.6rem;
            color: #333;
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: #555;
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 600;
            color: #002244;
            background: #f0f8ff;
            padding: 20px;
            border-left: 5px solid #0066cc;
            border-radius: 0 8px 8px 0;
            margin-bottom: 30px;
        }
        .highlight {
            background: linear-gradient(120deg, #ffecb3 0%, #ffcc80 100%);
            padding: 25px;
            border-radius: 10px;
            margin: 30px 0;
            border-left: 6px solid #ff6600;
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat {
            background: #0066cc;
            color: #fff;
            padding: 20px;
            border-radius: 10px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0,102,204,0.3);
        }
        .stat .number {
            font-size: 2.5rem;
            font-weight: 900;
            display: block;
        }
        .image-container {
            margin: 30px 0;
            text-align: center;
        }
        .image-container img {
            border-radius: 12px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            border: 5px solid #fff;
        }
        .caption {
            font-style: italic;
            color: #666;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .link-list {
            background: #f9f9f9;
            padding: 20px;
            border-radius: 8px;
            margin: 25px 0;
        }
        .link-list ul { list-style-position: inside; }
        .link-list li { margin-bottom: 10px; }
        .interaction {
            margin-top: 50px;
            padding-top: 30px;
            border-top: 2px solid #eaeaea;
        }
        .rating-form, .comment-form {
            background: #f9f9f9;
            padding: 25px;
            border-radius: 10px;
            margin-bottom: 30px;
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .rating-stars input { display: none; }
        .rating-stars label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.3s;
        }
        .rating-stars input:checked ~ label,
        .rating-stars label:hover,
        .rating-stars label:hover ~ label { color: #ffcc00; }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px;
            border: 2px solid #ccc;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #0066cc;
            outline: none;
        }
        .btn {
            background: #0066cc;
            color: #fff;
            border: none;
            padding: 12px 25px;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: background 0.3s, transform 0.2s;
        }
        .btn:hover {
            background: #ff6600;
            transform: translateY(-2px);
        }
        .btn i { margin-right: 8px; }
        .site-footer {
            background: #002244;
            color: #fff;
            padding: 40px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 30px;
        }
        .footer-section h3 {
            color: #ff6600;
            font-size: 1.5rem;
            margin-bottom: 20px;
        }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 12px; }
        .footer-links a { color: #ccc; }
        .footer-links a:hover { color: #ff6600; }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.1);
            padding: 15px;
            border-radius: 6px;
            margin-bottom: 15px;
        }
        friend-link a { color: #ffcc00; font-weight: 600; }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            .hamburger { display: block; }
            .main-nav {
                display: none;
                width: 100%;
                order: 3;
                margin-top: 20px;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 10px;
            }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            article { padding: 25px; }
            .stats-box { grid-template-columns: 1fr; }
        }