* { 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-color: #f8f9fa;
            max-width: 1600px;
            margin: 0 auto;
            padding: 0 10px;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: #0056b3; transition: color 0.3s; }
        a:hover { color: #ff6a00; }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.5rem 0;
            border-bottom: 2px solid #eaeaea;
            flex-wrap: wrap;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(90deg, #0056b3, #ff6a00);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -1px;
        }
        .search-form {
            display: flex;
            flex-grow: 1;
            max-width: 500px;
            margin: 0 2rem;
        }
        .search-form input {
            flex: 1;
            padding: 0.8rem 1rem;
            border: 2px solid #ddd;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
        }
        .search-form button {
            background: #0056b3;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s;
        }
        .search-form button:hover { background: #ff6a00; }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
            position: relative;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #0056b3;
            cursor: pointer;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #ff6a00;
            transition: width 0.3s;
        }
        .main-nav a:hover::after { width: 100%; }
        .breadcrumb {
            padding: 0.8rem 0;
            font-size: 0.9rem;
            color: #666;
            border-bottom: 1px solid #eee;
        }
        .breadcrumb a { color: #666; }
        .breadcrumb a:hover { color: #0056b3; }
        .hero {
            text-align: center;
            padding: 3rem 1rem;
            background: linear-gradient(135deg, #f0f7ff 0%, #e6f0ff 100%);
            border-radius: 15px;
            margin: 2rem 0;
            box-shadow: 0 5px 15px rgba(0,86,179,0.08);
        }
        .hero h1 {
            font-size: clamp(2rem, 5vw, 3.5rem);
            color: #0056b3;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.2rem;
            color: #555;
            max-width: 800px;
            margin: 0 auto 1.5rem;
        }
        .highlight {
            background: #fffacd;
            padding: 0.3rem 0.6rem;
            border-radius: 4px;
            font-weight: bold;
        }
        .content-container {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 3rem 0;
        }
        @media (max-width: 992px) {
            .content-container { grid-template-columns: 1fr; }
        }
        main article {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
            margin-bottom: 2rem;
        }
        article h2 {
            color: #0056b3;
            font-size: 2rem;
            margin: 2rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #ff6a00;
        }
        article h3 {
            color: #333;
            font-size: 1.5rem;
            margin: 1.8rem 0 1rem;
        }
        article p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        article strong { color: #0056b3; }
        .feature-img {
            width: 100%;
            border-radius: 10px;
            margin: 2rem 0;
            border: 5px solid #eaeaea;
        }
        .group-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: 0 0 10px rgba(0,0,0,0.05);
        }
        .group-table th, .group-table td {
            border: 1px solid #ddd;
            padding: 1rem;
            text-align: center;
        }
        .group-table th {
            background: #0056b3;
            color: white;
            font-weight: bold;
        }
        .group-table tr:nth-child(even) { background: #f9f9f9; }
        .group-table tr:hover { background: #f0f7ff; }
        aside {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
            align-self: start;
        }
        aside h3 {
            color: #0056b3;
            margin-bottom: 1.5rem;
            font-size: 1.5rem;
            border-bottom: 2px solid #eee;
            padding-bottom: 0.5rem;
        }
        .widget {
            margin-bottom: 2.5rem;
        }
        .poll button {
            background: #0056b3;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 50px;
            cursor: pointer;
            font-weight: bold;
            width: 100%;
            margin-top: 1rem;
            transition: background 0.3s;
        }
        .poll button:hover { background: #ff6a00; }
        .user-interaction {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
            margin: 2rem 0;
        }
        .rating-form, .comment-form {
            margin-bottom: 2.5rem;
        }
        .stars {
            font-size: 2rem;
            color: #ddd;
            margin: 1rem 0;
            cursor: pointer;
        }
        .stars span {
            margin-right: 5px;
            transition: color 0.2s;
        }
        .stars span:hover,
        .stars span:hover ~ span { color: #ff6a00; }
        .stars .active { color: #ffcc00; }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            font-weight: bold;
            margin-bottom: 0.5rem;
            color: #555;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.9rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: #0056b3;
            outline: none;
        }
        .submit-btn {
            background: #0056b3;
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
        }
        .submit-btn:hover {
            background: #ff6a00;
            transform: translateY(-2px);
        }
        footer {
            background: #1a1a1a;
            color: #ccc;
            padding: 3rem 1rem 1.5rem;
            margin-top: 4rem;
            border-radius: 12px 12px 0 0;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo a {
            font-size: 2rem;
            font-weight: 900;
            color: white;
            background: linear-gradient(90deg, #0056b3, #ff6a00);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        friend-link {
            display: block;
            margin: 1rem 0;
        }
        friend-link a {
            color: #ffcc00;
            font-weight: bold;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #999;
        }
        @media (max-width: 768px) {
            .header-top { flex-direction: column; gap: 1.5rem; }
            .search-form { order: 3; width: 100%; max-width: 100%; margin: 0; }
            .hamburger { display: block; }
            .main-nav ul {
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: white;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
                border-radius: 0 0 10px 10px;
                padding: 1rem;
                display: none;
                z-index: 1000;
            }
            .main-nav.active ul { display: flex; }
            .content-container { gap: 2rem; }
            main article, aside, .user-interaction { padding: 1.5rem; }
            article h2 { font-size: 1.7rem; }
        }