* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #0033a0; 
            --secondary: #ed1c24; 
            --accent: #00a651; 
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--dark);
            background-color: #f5f5f5;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary) 0%, #002366 100%);
            color: white;
            padding: 1.5rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            text-transform: uppercase;
            letter-spacing: 2px;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            color: var(--secondary);
            transform: scale(1.05);
            transition: var(--transition);
        }
        .my-logo i {
            color: var(--secondary);
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-links a:hover {
            background-color: var(--secondary);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: white;
            transition: var(--transition);
        }
        .breadcrumb {
            background-color: var(--light);
            padding: 1rem 0;
            margin-bottom: 2rem;
            border-bottom: 1px solid #dee2e6;
        }
        .breadcrumb-content {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 2rem 0;
            background-color: white;
            border-radius: 12px;
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }
        .article-header {
            padding: 0 2rem 2rem;
            border-bottom: 3px solid var(--primary);
            margin-bottom: 3rem;
        }
        h1 {
            font-size: 3.2rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2.4rem;
            color: var(--primary);
            margin: 3rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent);
        }
        h3 {
            font-size: 1.8rem;
            color: var(--secondary);
            margin: 2.5rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: var(--dark);
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .highlight {
            background-color: rgba(0, 51, 160, 0.1);
            padding: 2rem;
            border-left: 4px solid var(--primary);
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .feature-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 12px;
            margin: 2rem auto;
            display: block;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
            transition: var(--transition);
        }
        .feature-image:hover {
            transform: scale(1.01);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
        }
        .search-section {
            background: linear-gradient(to right, var(--primary), var(--accent));
            padding: 3rem 2rem;
            border-radius: 12px;
            margin: 3rem 2rem;
            text-align: center;
            color: white;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 2rem auto 0;
        }
        .search-form input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: none;
            border-radius: 8px 0 0 8px;
            font-size: 1.1rem;
        }
        .search-form button {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 0 2rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #cc0000;
        }
        .interactive-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 2rem;
        }
        .rating-card, .comment-card {
            background-color: var(--light);
            padding: 2rem;
            border-radius: 12px;
            box-shadow: var(--shadow);
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 1.8rem;
            color: #ffc107;
        }
        .star {
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover {
            transform: scale(1.3);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid #ced4da;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 51, 160, 0.1);
        }
        .submit-btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background-color: var(--secondary);
            transform: translateY(-3px);
        }
        .related-links {
            background-color: var(--light);
            padding: 2rem;
            border-radius: 12px;
            margin: 3rem 2rem;
        }
        .links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-top: 1.5rem;
        }
        .link-card {
            background-color: white;
            padding: 1.5rem;
            border-radius: 8px;
            text-decoration: none;
            color: var(--dark);
            display: block;
            transition: var(--transition);
            border-left: 4px solid var(--accent);
        }
        .link-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
            color: var(--primary);
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2rem;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 8px;
            margin-bottom: 1rem;
            transition: var(--transition);
        }
        friend-link:hover {
            background-color: rgba(255, 255, 255, 0.2);
            transform: translateX(10px);
        }
        friend-link a {
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
        }
        .update-time {
            background-color: var(--accent);
            color: white;
            padding: 0.8rem 1.5rem;
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-top: 1.5rem;
            font-weight: 600;
        }
        @media (max-width: 992px) {
            h1 {
                font-size: 2.6rem;
            }
            h2 {
                font-size: 2rem;
            }
            .nav-links {
                position: fixed;
                top: 80px;
                right: -100%;
                flex-direction: column;
                background-color: var(--primary);
                width: 100%;
                text-align: center;
                transition: 0.3s;
                padding: 2rem 0;
                gap: 0;
            }
            .nav-links.active {
                right: 0;
            }
            .nav-links li {
                margin: 1rem 0;
            }
            .hamburger {
                display: flex;
            }
            .hamburger.active span:nth-child(1) {
                transform: rotate(45deg) translate(5px, 5px);
            }
            .hamburger.active span:nth-child(2) {
                opacity: 0;
            }
            .hamburger.active span:nth-child(3) {
                transform: rotate(-45deg) translate(7px, -6px);
            }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                gap: 1rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input,
            .search-form button {
                width: 100%;
                border-radius: 8px;
                margin-bottom: 0.5rem;
            }
            .article-header,
            .search-section,
            .interactive-grid,
            .related-links {
                padding: 1.5rem;
                margin: 2rem 1rem;
            }
            main {
                padding: 1rem 0;
            }
        }
        .emoji {
            font-size: 1.2em;
            margin: 0 5px;
        }
        .key-point {
            background: linear-gradient(135deg, #fff8e1, #fff);
            padding: 1.5rem;
            border-radius: 12px;
            border: 2px solid #ffd54f;
            margin: 2rem 0;
        }
        .stat-box {
            display: inline-block;
            background-color: var(--primary);
            color: white;
            padding: 0.5rem 1.2rem;
            border-radius: 6px;
            font-weight: bold;
            margin: 0 5px;
        }
        html {
            scroll-behavior: smooth;
        }
        a:focus,
        button:focus,
        input:focus,
        textarea:focus {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }