* { 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;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a { color: #0d6efd; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #dc3545; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0a2463 0%, #d90429 100%);
            color: white;
            padding: 1.5rem 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;
            flex-wrap: wrap;
        }
        .my-logo {
            font-family: 'Impact', 'Arial Black', sans-serif;
            font-size: 2.8rem;
            font-weight: bold;
            letter-spacing: 2px;
            background: linear-gradient(to right, #ffcc00, #ffffff);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .my-logo a { color: inherit; background: none; }
        .breadcrumb {
            padding: 1rem 20px;
            background-color: #e9ecef;
            font-size: 0.9rem;
            color: #6c757d;
        }
        .breadcrumb a { color: #495057; }
        .breadcrumb a:hover { text-decoration: underline; }
        .breadcrumb .separator { margin: 0 8px; }
        .main-nav { display: flex; align-items: center; }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .nav-links a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0.2rem;
            border-bottom: 2px solid transparent;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: #ffcc00;
            border-bottom-color: #ffcc00;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-links {
                position: fixed;
                top: 95px;
                left: 0;
                width: 100%;
                background-color: #0a2463;
                flex-direction: column;
                align-items: center;
                padding: 2rem 0;
                gap: 1.5rem;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: clip-path 0.4s ease-in-out;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            .nav-links.active {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
        }
        .search-container {
            margin: 2rem auto;
            max-width: 600px;
            padding: 0 20px;
        }
        .search-form {
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
        }
        .search-input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1.1rem;
            outline: none;
        }
        .search-button {
            background-color: #d90429;
            color: white;
            border: none;
            padding: 0 2rem;
            cursor: pointer;
            font-weight: bold;
            transition: background-color 0.3s;
        }
        .search-button:hover { background-color: #bb0223; }
        .main-content {
            flex: 1;
            padding: 2rem 0;
        }
        article {
            background: white;
            border-radius: 12px;
            padding: 3rem;
            box-shadow: 0 6px 20px rgba(0,0,0,0.07);
            margin-bottom: 2rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #0a2463;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 4px solid #ffcc00;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2.2rem;
            color: #d90429;
            margin: 2.5rem 0 1rem;
            padding-top: 1rem;
        }
        h3 {
            font-size: 1.8rem;
            color: #1a759f;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #184e77;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: #555;
            background-color: #f8f9fa;
            padding: 1.5rem;
            border-left: 5px solid #0d6efd;
            border-radius: 0 8px 8px 0;
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #fff3cd;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 5px solid #ffc107;
            margin: 1.5rem 0;
            font-weight: 500;
        }
        emoji { font-size: 1.2em; margin-right: 5px; }
        .term { font-weight: bold; color: #0a2463; font-style: italic; }
        .keyword { background-color: #e7f1ff; padding: 0 4px; border-radius: 3px; }
        .article-image {
            margin: 2.5rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            max-width: 800px;
        }
        .article-image figcaption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 0.8rem;
            background-color: #f8f9fa;
            font-size: 0.95rem;
        }
        .internal-link-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
            padding: 1.5rem;
            background-color: #e9f7fe;
            border-radius: 10px;
        }
        .internal-link-list a {
            display: block;
            padding: 0.8rem;
            background: white;
            border-radius: 6px;
            border-left: 4px solid #1a759f;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .internal-link-list a:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 12px rgba(0,0,0,0.1);
            border-left-color: #d90429;
        }
        .user-interaction {
            background-color: #f8f9fa;
            border-radius: 12px;
            padding: 2.5rem;
            margin-top: 3rem;
            border-top: 5px solid #0d6efd;
        }
        .interaction-title {
            text-align: center;
            margin-bottom: 2rem;
            color: #0a2463;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            font-size: 2.5rem;
            color: #ddd;
            margin: 1rem 0;
        }
        .star-rating label { cursor: pointer; }
        .star-rating input { display: none; }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label { color: #ffcc00; }
        .form-group { display: flex; flex-direction: column; }
        .form-group label { font-weight: bold; margin-bottom: 0.5rem; color: #495057; }
        .form-control {
            padding: 1rem;
            border: 2px solid #ced4da;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .form-control:focus {
            border-color: #0d6efd;
            outline: none;
            box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25);
        }
        .submit-btn {
            background-color: #198754;
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: background-color 0.3s;
            align-self: flex-start;
        }
        .submit-btn:hover { background-color: #157347; }
        .site-footer {
            background-color: #212529;
            color: #adb5bd;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #f8f9fa;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .friend-links {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .friend-links a {
            color: #adb5bd;
            padding: 0.3rem 0;
            border-bottom: 1px dashed #495057;
        }
        .friend-links a:hover { color: #0d6efd; border-bottom-color: #0d6efd; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #495057;
            font-size: 0.9rem;
            color: #6c757d;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            article { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .header-content { flex-direction: column; align-items: flex-start; gap: 1rem; }
            .my-logo { font-size: 2.2rem; align-self: center; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            .article-image { margin: 1.5rem -20px; border-radius: 0; }
            .internal-link-list { grid-template-columns: 1fr; }
            .user-interaction { padding: 1.5rem; }
        }
        @media (max-width: 480px) {
            .container { padding: 0 15px; }
            article { padding: 1.5rem; }
            .lead { font-size: 1.1rem; padding: 1rem; }
            .search-input { padding: 0.8rem; font-size: 1rem; }
        }