* {
            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: #f9f9f9;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.3s ease;
        }
        ul, ol {
            list-style-position: inside;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 700; }
        .highlight {
            background-color: #fffacd;
            padding: 2px 5px;
            border-radius: 3px;
        }
        .emoji { font-size: 1.2em; }
        .site-header {
            background: linear-gradient(135deg, #1a237e 0%, #283593 100%);
            color: white;
            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;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: #ffeb3b;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
            letter-spacing: -0.5px;
        }
        .logo a:hover {
            color: #ffd600;
        }
        .nav-desktop ul {
            display: flex;
            gap: 30px;
        }
        .nav-desktop li {
            list-style: none;
        }
        .nav-desktop a {
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        .nav-desktop a:hover {
            color: #ffeb3b;
            border-bottom-color: #ffeb3b;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #ffeb3b;
            background: none;
            border: none;
        }
        .nav-mobile {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background: #1a237e;
            flex-direction: column;
            padding: 20px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile ul {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .nav-mobile li {
            list-style: none;
        }
        .nav-mobile a {
            display: block;
            padding: 12px 15px;
            border-radius: 5px;
            font-weight: 600;
        }
        .nav-mobile a:hover {
            background-color: #283593;
            color: #ffeb3b;
        }
        .breadcrumb {
            background-color: #e8eaf6;
            padding: 12px 0;
            font-size: 0.95rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .breadcrumb li {
            list-style: none;
            display: inline;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin-left: 8px;
            color: #5c6bc0;
        }
        .breadcrumb a:hover {
            color: #1a237e;
            text-decoration: underline;
        }
        main {
            background-color: white;
            padding: 40px 0;
            box-shadow: 0 0 20px rgba(0,0,0,0.05);
            min-height: 1500px;
        }
        .article-header {
            margin-bottom: 40px;
            border-bottom: 3px solid #ffeb3b;
            padding-bottom: 25px;
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: #1a237e;
            line-height: 1.2;
            margin-bottom: 15px;
        }
        .article-meta {
            color: #666;
            font-size: 0.95rem;
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }
        .article-meta span i {
            margin-right: 5px;
            color: #5c6bc0;
        }
        .content-section {
            margin-bottom: 50px;
        }
        h2 {
            font-size: 2.2rem;
            color: #283593;
            margin: 35px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px dashed #c5cae9;
        }
        h3 {
            font-size: 1.8rem;
            color: #3949ab;
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.4rem;
            color: #5c6bc0;
            margin: 25px 0 12px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
            line-height: 1.8;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 600;
            color: #1a237e;
            background-color: #e8eaf6;
            padding: 20px;
            border-left: 5px solid #ffeb3b;
            border-radius: 0 8px 8px 0;
            margin-bottom: 30px;
        }
        blockquote {
            font-style: italic;
            color: #555;
            border-left: 4px solid #ff9800;
            padding-left: 20px;
            margin: 25px 0 25px 20px;
            background-color: #fff3e0;
            padding: 15px 20px;
            border-radius: 0 8px 8px 0;
        }
        .feature-img {
            width: 80%;
            margin: 30px auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .feature-img img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .feature-img img:hover {
            transform: scale(1.02);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 10px;
            background-color: #f5f5f5;
            font-size: 0.95rem;
        }
        ul, ol {
            margin-bottom: 20px;
            padding-left: 30px;
        }
        li {
            margin-bottom: 10px;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 25px 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .data-table th, .data-table td {
            border: 1px solid #ddd;
            padding: 15px;
            text-align: left;
        }
        .data-table th {
            background-color: #1a237e;
            color: white;
            font-weight: 600;
        }
        .data-table tr:nth-child(even) {
            background-color: #f9f9f9;
        }
        .data-table tr:hover {
            background-color: #e8eaf6;
        }
        .interaction-module {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            padding: 30px;
            border-radius: 12px;
            margin: 40px 0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.06);
        }
        .module-title {
            color: #1a237e;
            font-size: 1.8rem;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .module-title i {
            color: #ff9800;
        }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            align-items: center;
            margin-top: 20px;
        }
        .search-form input, .comment-form input, .comment-form textarea, .rating-form select {
            padding: 14px 18px;
            border: 2px solid #c5cae9;
            border-radius: 8px;
            font-size: 1rem;
            flex-grow: 1;
            min-width: 250px;
            transition: border-color 0.3s;
        }
        .comment-form textarea {
            min-height: 120px;
            width: 100%;
            font-family: inherit;
        }
        .search-form input:focus, .comment-form input:focus, .comment-form textarea:focus, .rating-form select:focus {
            outline: none;
            border-color: #1a237e;
        }
        .btn {
            padding: 14px 28px;
            background: linear-gradient(to right, #1a237e, #3949ab);
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 8px rgba(26, 35, 126, 0.3);
        }
        .btn:hover {
            background: linear-gradient(to right, #0d1540, #283593);
            box-shadow: 0 6px 12px rgba(26, 35, 126, 0.4);
            transform: translateY(-2px);
        }
        .stars {
            display: flex;
            gap: 5px;
            font-size: 1.8rem;
            color: #ffd700;
            cursor: pointer;
            margin: 10px 0;
        }
        .stars span:hover ~ span {
            color: #ddd;
        }
        .site-footer {
            background: #1a237e;
            color: #e8eaf6;
            padding: 40px 0 20px;
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 25px;
            margin-bottom: 40px;
        }
        .web-link {
            background: rgba(255, 255, 255, 0.08);
            border-radius: 8px;
            padding: 15px;
            transition: background 0.3s;
        }
        .web-link:hover {
            background: rgba(255, 255, 255, 0.15);
        }
        .web-link a {
            color: #ffeb3b;
            font-weight: 600;
        }
        .web-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 25px;
            border-top: 1px solid #3949ab;
            font-size: 0.95rem;
            color: #c5cae9;
        }
        @media screen and (max-width: 992px) {
            .container { padding: 0 15px; }
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            .nav-desktop { display: none; }
            .hamburger { display: block; }
            .feature-img { width: 95%; }
        }
        @media screen and (max-width: 768px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            h3 { font-size: 1.5rem; }
            .article-meta { flex-direction: column; gap: 8px; }
            .search-form, .comment-form, .rating-form { flex-direction: column; align-items: stretch; }
            .search-form input, .comment-form input, .comment-form textarea, .rating-form select { min-width: auto; }
            .footer-links { grid-template-columns: 1fr; }
        }