* {
            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;
        }
        a {
            color: #1a73e8;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #0d47a1;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #0c2461 0%, #1e3799 100%);
            color: #fff;
            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;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: #4bcffa;
        }
        .my-logo:hover {
            color: #4bcffa;
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            color: #fff;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
        }
        .desktop-nav a:hover {
            background-color: rgba(255, 255, 255, 0.15);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
            background: transparent;
            border: none;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: #fff;
            border-radius: 2px;
            transition: 0.3s;
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background-color: #0c2461;
            flex-direction: column;
            padding: 1rem;
            box-shadow: 0 5px 10px rgba(0,0,0,0.2);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav ul {
            list-style: none;
            width: 100%;
        }
        .mobile-nav li {
            width: 100%;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .mobile-nav a {
            display: block;
            color: #fff;
            padding: 1rem;
            font-weight: 600;
        }
        .mobile-nav a:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #e9ecef;
            font-size: 0.9rem;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: #6c757d;
        }
        main {
            padding: 2rem 0;
            background-color: #fff;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 1px solid #dee2e6;
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: #0c2461;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-header .meta {
            color: #6c757d;
            font-size: 0.95rem;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .article-header .meta i {
            color: #1e3799;
        }
        .article-body {
            font-size: 1.1rem;
        }
        .article-body > * {
            margin-bottom: 1.5rem;
        }
        .article-body h2, .article-body h3, .article-body h4 {
            color: #0c2461;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        .article-body h2 {
            font-size: 2.2rem;
            border-left: 5px solid #4bcffa;
            padding-left: 15px;
        }
        .article-body h3 {
            font-size: 1.8rem;
        }
        .article-body h4 {
            font-size: 1.5rem;
        }
        .article-body p {
            text-align: justify;
            margin-bottom: 1.5rem;
        }
        .article-body strong {
            color: #0c2461;
            font-weight: 700;
        }
        .article-body em {
            font-style: italic;
            color: #555;
        }
        .article-body blockquote {
            border-left: 4px solid #1e3799;
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #555;
            background-color: #f8f9fa;
            padding: 1.5rem;
            border-radius: 0 5px 5px 0;
        }
        .article-body ul, .article-body ol {
            padding-left: 2rem;
            margin-bottom: 1.5rem;
        }
        .article-body li {
            margin-bottom: 0.5rem;
        }
        .highlight-box {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 5px solid #1a73e8;
            margin: 2rem 0;
        }
        .img-container {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 800px;
        }
        .img-container img {
            border-radius: 10px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            border: 1px solid #ddd;
        }
        .img-caption {
            font-style: italic;
            color: #666;
            margin-top: 0.75rem;
            font-size: 0.95rem;
        }
        .interactive-section {
            background-color: #f8f9fa;
            padding: 2rem;
            border-radius: 10px;
            margin: 3rem 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .interactive-section h3 {
            margin-top: 0;
            color: #1e3799;
        }
        .interactive-section form {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 1rem;
        }
        .interactive-section input, .interactive-section textarea, .interactive-section select {
            padding: 0.8rem 1rem;
            border: 1px solid #ced4da;
            border-radius: 5px;
            font-family: inherit;
            font-size: 1rem;
            flex: 1 1 300px;
        }
        .interactive-section button {
            background: linear-gradient(to right, #1e3799, #0c2461);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 5px;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s ease;
            flex: 0 1 auto;
        }
        .interactive-section button:hover {
            background: linear-gradient(to right, #0c2461, #1e3799);
        }
        .star-rating {
            display: flex;
            gap: 5px;
            font-size: 1.8rem;
            color: #ffd700;
            margin: 1rem 0;
        }
        .star-rating i {
            cursor: pointer;
            transition: transform 0.2s;
        }
        .star-rating i:hover {
            transform: scale(1.2);
        }
        footer {
            background-color: #0c2461;
            color: #fff;
            padding: 3rem 0 1.5rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #4bcffa;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-section ul {
            list-style: none;
        }
        .footer-section li {
            margin-bottom: 0.75rem;
        }
        .footer-section a {
            color: #e9ecef;
        }
        .footer-section a:hover {
            color: #4bcffa;
        }
        friend-link {
            display: block;
            background-color: rgba(255,255,255,0.05);
            padding: 1.5rem;
            border-radius: 8px;
            margin-top: 1rem;
        }
        friend-link h5 {
            color: #4bcffa;
            margin-bottom: 1rem;
        }
        friend-link ul {
            list-style: disc inside;
            color: #e9ecef;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            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: 2.4rem;
            }
            .article-body h2 {
                font-size: 2rem;
            }
            .article-body h3 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .article-header h1 {
                font-size: 2rem;
            }
            .article-body h2 {
                font-size: 1.8rem;
            }
            .article-body h3 {
                font-size: 1.5rem;
            }
            .interactive-section form {
                flex-direction: column;
            }
            .interactive-section input, .interactive-section textarea, .interactive-section select, .interactive-section button {
                width: 100%;
                flex: 1 1 auto;
            }
        }
        @media (max-width: 576px) {
            .container {
                padding: 0 15px;
            }
            .article-header h1 {
                font-size: 1.8rem;
            }
            .article-body h2 {
                font-size: 1.6rem;
            }
            .my-logo {
                font-size: 1.8rem;
            }
        }