* { 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: 100vw;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0f4c75 0%, #1b262c 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-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: #ffd166;
            text-decoration: none;
            font-family: 'Georgia', serif;
            letter-spacing: -0.5px;
        }
        .logo a:hover { color: #ffedb3; }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            color: #e0e0e0;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
            transition: color 0.3s;
        }
        .desktop-nav a:hover { color: #ffd166; }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 3px;
            bottom: -5px;
            left: 0;
            background-color: #ffd166;
            transition: width 0.3s;
        }
        .desktop-nav a:hover::after { width: 100%; }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: #ffd166;
            border-radius: 2px;
            transition: 0.3s;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: #1b262c;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem 2rem;
            box-shadow: 0 10px 15px rgba(0,0,0,0.2);
        }
        .mobile-nav.active { display: flex; }
        .mobile-nav ul { list-style: none; }
        .mobile-nav li { margin: 1rem 0; }
        .mobile-nav a {
            color: #e0e0e0;
            text-decoration: none;
            font-size: 1.2rem;
            padding: 0.5rem;
            display: block;
            border-bottom: 1px solid #2a3b47;
        }
        .mobile-nav a:hover { color: #ffd166; }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #e9ecef;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin: 0 10px;
            color: #666;
        }
        .breadcrumb a {
            color: #0f4c75;
            text-decoration: none;
        }
        .breadcrumb a:hover { text-decoration: underline; }
        main { padding: 2rem 0; }
        .article-header { margin-bottom: 2.5rem; }
        .article-header h1 {
            font-size: 2.8rem;
            color: #1b262c;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .meta-info {
            color: #666;
            font-size: 0.95rem;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            border-bottom: 2px solid #ffd166;
            padding-bottom: 1rem;
        }
        .meta-info span { display: inline-flex; align-items: center; gap: 5px; }
        .content-section {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .content-section { grid-template-columns: 1fr; }
        }
        .article-content h2 {
            font-size: 2rem;
            color: #0f4c75;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e9ecef;
        }
        .article-content h3 {
            font-size: 1.6rem;
            color: #1b262c;
            margin: 2rem 0 1rem;
        }
        .article-content p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight-box {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            border-left: 5px solid #0f4c75;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .highlight-box p { margin-bottom: 0; }
        .emoji-list { list-style: none; }
        .emoji-list li { margin-bottom: 0.8rem; padding-left: 1.5em; }
        .emoji-list li::before { content: "🎯 "; margin-left: -1.5em; margin-right: 0.5em; }
        .featured-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            margin: 2rem auto;
            display: block;
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .sidebar-widget {
            background: white;
            border-radius: 10px;
            padding: 1.8rem;
            margin-bottom: 2rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            border-top: 4px solid #0f4c75;
        }
        .sidebar-widget h3 {
            color: #1b262c;
            margin-bottom: 1.2rem;
            font-size: 1.4rem;
        }
        .code-list { list-style: none; }
        .code-list li {
            background: #f8f9fa;
            border: 1px dashed #0f4c75;
            margin-bottom: 0.8rem;
            padding: 0.8rem;
            border-radius: 6px;
            font-family: monospace;
            font-weight: bold;
            color: #0f4c75;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .code-list .copy-btn {
            background: #0f4c75;
            color: white;
            border: none;
            padding: 0.3rem 0.8rem;
            border-radius: 4px;
            cursor: pointer;
            transition: background 0.3s;
        }
        .code-list .copy-btn:hover { background: #1b262c; }
        .search-form { margin-bottom: 1.5rem; }
        .search-form input[type="search"] {
            width: 100%;
            padding: 0.9rem;
            border: 2px solid #ccc;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
        }
        .search-form button {
            background: #0f4c75;
            color: white;
            border: none;
            padding: 0.9rem 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s;
        }
        .search-form button:hover { background: #1b262c; }
        .flex-form { display: flex; }
        .user-feedback { margin-top: 4rem; padding-top: 2rem; border-top: 3px solid #e9ecef; }
        .feedback-form {
            background: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .form-group { margin-bottom: 1.5rem; }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #333;
        }
        .form-control {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
        }
        .star-rating {
            direction: rtl;
            display: inline-block;
        }
        .star-rating input { display: none; }
        .star-rating label {
            color: #ccc;
            font-size: 1.8rem;
            padding: 0 0.1rem;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label { color: #ffd166; }
        .btn-submit {
            background: linear-gradient(to right, #0f4c75, #1b262c);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .btn-submit:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(15, 76, 117, 0.3);
        }
        .web-links-section {
            background: #1b262c;
            padding: 3rem 0;
            margin-top: 3rem;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background: #2a3b47;
            padding: 1.2rem;
            border-radius: 8px;
            transition: transform 0.3s, background 0.3s;
        }
        .web-link:hover {
            background: #0f4c75;
            transform: translateY(-5px);
        }
        .web-link a {
            color: #e0e0e0;
            text-decoration: none;
            font-weight: 600;
            display: block;
        }
        .web-link a:hover { color: #ffd166; }
        .site-footer {
            background: #0f1721;
            color: #b0b0b0;
            padding: 3rem 0 1.5rem;
            text-align: center;
        }
        .footer-content p { margin-bottom: 1.5rem; font-size: 1rem; }
        .copyright {
            border-top: 1px solid #2a3b47;
            padding-top: 1.5rem;
            font-size: 0.9rem;
            color: #888;
        }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .hamburger { display: flex; }
            .article-header h1 { font-size: 2.2rem; }
            .content-section { gap: 2rem; }
            .highlight-box { padding: 1.2rem; }
            .feedback-form { padding: 1.5rem; }
            .web-links-container { grid-template-columns: 1fr; }
        }