* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }
        ul, ol {
            list-style-position: inside;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 700; }
        .highlight {
            background-color: #fff3cd;
            padding: 2px 6px;
            border-radius: 3px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background: linear-gradient(135deg, #1e3c72, #2a5298);
            color: white;
            border-radius: 50px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(42, 82, 152, 0.2);
        }
        .site-header {
            background: linear-gradient(90deg, #0c2461, #1e3799);
            color: white;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -1px;
            background: linear-gradient(45deg, #ffd32a, #ff9f1a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .logo a:hover {
            opacity: 0.9;
        }
        .desktop-nav ul {
            display: flex;
            gap: 30px;
        }
        .desktop-nav a {
            font-weight: 600;
            padding: 8px 0;
            position: relative;
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #ffd32a;
            transition: width 0.3s;
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #ffd32a;
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background: #1e3799;
            flex-direction: column;
            padding: 20px;
            box-shadow: 0 10px 15px rgba(0,0,0,0.1);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            padding: 15px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            font-weight: 600;
        }
        .mobile-nav a:hover {
            background-color: rgba(255, 255, 255, 0.05);
            padding-left: 25px;
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #e9ecef;
            font-size: 0.9rem;
        }
        .breadcrumb a:hover {
            color: #1e3799;
            text-decoration: underline;
        }
        .breadcrumb i {
            margin: 0 8px;
            color: #6c757d;
        }
        main {
            padding: 40px 0;
            background-color: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin-top: 20px;
        }
        .article-header {
            margin-bottom: 40px;
            padding-bottom: 20px;
            border-bottom: 2px solid #e9ecef;
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: #0c2461;
            margin-bottom: 15px;
            line-height: 1.2;
        }
        .meta-info {
            color: #6c757d;
            font-size: 0.95rem;
        }
        .meta-info i {
            margin-right: 5px;
        }
        .article-content {
            font-size: 1.1rem;
            max-width: 900px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .article-content h2 {
            color: #1e3799;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 1px dashed #adb5bd;
        }
        .article-content h3 {
            color: #2a5298;
            margin: 30px 0 15px;
        }
        .article-content p {
            margin-bottom: 1.5em;
            text-align: justify;
        }
        .article-content ul, .article-content ol {
            margin-bottom: 1.5em;
            padding-left: 20px;
        }
        .article-content li {
            margin-bottom: 0.5em;
        }
        .article-content a {
            color: #1e3799;
            border-bottom: 1px dotted #1e3799;
        }
        .article-content a:hover {
            color: #ff9f1a;
            border-bottom-style: solid;
        }
        .featured-image {
            margin: 30px auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            max-width: 800px;
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #6c757d;
            padding: 10px;
            background-color: #f8f9fa;
            font-size: 0.95rem;
        }
        .interactive-section {
            background-color: #f1f8ff;
            border-left: 5px solid #2a5298;
            padding: 30px;
            margin: 40px 0;
            border-radius: 0 10px 10px 0;
        }
        .interactive-section h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ced4da;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus {
            outline: none;
            border-color: #2a5298;
            box-shadow: 0 0 0 3px rgba(42, 82, 152, 0.2);
        }
        textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }
        .star-rating {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: #ffd32a;
            cursor: pointer;
            margin-bottom: 15px;
        }
        .star-rating i {
            transition: transform 0.2s;
        }
        .star-rating i:hover {
            transform: scale(1.2);
        }
        .site-footer {
            background: linear-gradient(90deg, #0c2461, #1e3799);
            color: white;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            font-size: 1.4rem;
            margin-bottom: 20px;
            color: #ffd32a;
        }
        friend-link {
            display: block;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        friend-link a:hover {
            color: #ffd32a;
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: #adb5bd;
        }
        @media (max-width: 992px) {
            .article-header h1 { font-size: 2.3rem; }
            .desktop-nav { display: none; }
            .hamburger { display: block; }
        }
        @media (max-width: 768px) {
            .article-header h1 { font-size: 2rem; }
            .article-content { padding: 0 15px; font-size: 1rem; }
            .interactive-section { padding: 20px; }
            .btn { padding: 10px 22px; }
        }
        @media (max-width: 576px) {
            .header-content { flex-wrap: wrap; }
            .logo a { font-size: 1.8rem; }
            .article-header h1 { font-size: 1.7rem; }
            .footer-content { grid-template-columns: 1fr; }
        }