* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.6;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            text-decoration: none;
            color: #2a5c9e;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #e74c3c;
        }
        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, #1a2980, #26d0ce);
            color: white;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -1px;
            color: white;
            display: flex;
            align-items: center;
        }
        .logo i {
            margin-right: 10px;
            color: #FFD700;
        }
        .logo span {
            color: #FFD700;
            text-shadow: 2px 2px 0 #1a2980;
        }
        nav ul {
            display: flex;
            list-style: none;
        }
        nav ul li {
            margin-left: 25px;
        }
        nav ul li a {
            color: white;
            font-weight: 600;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        nav ul li a:hover {
            border-bottom: 2px solid #FFD700;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .breadcrumb {
            background-color: #e9f0f9;
            padding: 10px 20px;
            font-size: 0.9rem;
            border-bottom: 1px solid #d1d9e6;
        }
        .breadcrumb a {
            color: #555;
        }
        .breadcrumb a:hover {
            color: #1a2980;
        }
        .search-section {
            background-color: #fff;
            padding: 25px 0;
            text-align: center;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            margin: 20px auto;
            border-radius: 10px;
            max-width: 800px;
        }
        .search-section h2 {
            margin-bottom: 15px;
            color: #1a2980;
        }
        .search-form {
            display: flex;
            justify-content: center;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-form input {
            flex: 1;
            padding: 12px 15px;
            border: 2px solid #26d0ce;
            border-radius: 30px 0 0 30px;
            font-size: 1rem;
            outline: none;
        }
        .search-form button {
            background: linear-gradient(to right, #26d0ce, #1a2980);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 0 30px 30px 0;
            cursor: pointer;
            font-weight: 600;
            transition: opacity 0.3s;
        }
        .search-form button:hover {
            opacity: 0.9;
        }
        main {
            flex: 1;
            padding: 30px 0;
        }
        article {
            background-color: white;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.08);
            margin-bottom: 30px;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a2980;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: #26d0ce;
            margin: 30px 0 15px;
            padding-bottom: 10px;
            border-bottom: 2px dashed #eaeaea;
        }
        h3 {
            font-size: 1.5rem;
            color: #333;
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 18px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            background: #f0f9ff;
            padding: 20px;
            border-left: 5px solid #26d0ce;
            border-radius: 0 8px 8px 0;
            margin-bottom: 25px;
        }
        .highlight {
            background-color: #fff9e6;
            padding: 15px;
            border-radius: 8px;
            border-left: 4px solid #FFD700;
            margin: 20px 0;
        }
        .tip {
            background-color: #e6f7ff;
            padding: 15px;
            border-radius: 8px;
            margin: 15px 0;
            display: flex;
            align-items: flex-start;
        }
        .tip i {
            color: #1a2980;
            margin-right: 10px;
            font-size: 1.2rem;
            margin-top: 3px;
        }
        .image-container {
            margin: 25px 0;
            text-align: center;
        }
        .image-container img {
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            max-width: 800px;
            margin: 0 auto;
        }
        .caption {
            font-style: italic;
            color: #666;
            margin-top: 8px;
            font-size: 0.95rem;
        }
        .user-interaction {
            background-color: #f9f9f9;
            padding: 25px;
            border-radius: 12px;
            margin: 40px 0;
            border: 1px solid #e0e0e0;
        }
        .user-interaction h2 {
            text-align: center;
            color: #e74c3c;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin-top: 25px;
        }
        .comment-box, .rating-box {
            background: white;
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
        }
        .form-group {
            margin-bottom: 15px;
        }
        .form-group label {
            display: block;
            margin-bottom: 5px;
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 10px;
            border: 1px solid #ccc;
            border-radius: 5px;
            font-size: 1rem;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background: linear-gradient(to right, #e74c3c, #c0392b);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 30px;
            cursor: pointer;
            font-weight: 600;
            transition: transform 0.3s;
        }
        .submit-btn:hover {
            transform: translateY(-3px);
        }
        .stars {
            display: flex;
            justify-content: center;
            font-size: 2rem;
            color: #FFD700;
            margin: 10px 0;
        }
        .stars i {
            cursor: pointer;
            margin: 0 5px;
        }
        .footer-links {
            background-color: #2c3e50;
            padding: 30px 0;
            color: #ecf0f1;
        }
        .web-link {
            display: inline-block;
            background-color: #34495e;
            margin: 8px;
            padding: 10px 20px;
            border-radius: 30px;
            transition: all 0.3s ease;
        }
        .web-link a {
            color: #ecf0f1;
        }
        .web-link:hover {
            background-color: #1a2980;
            transform: scale(1.05);
        }
        .links-container {
            text-align: center;
        }
        footer {
            background-color: #1a252f;
            color: #bdc3c7;
            text-align: center;
            padding: 25px 0;
            font-size: 0.95rem;
        }
        footer a {
            color: #26d0ce;
        }
        .copyright {
            margin-top: 15px;
            border-top: 1px solid #2c3e50;
            padding-top: 15px;
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: #1a2980;
                position: absolute;
                top: 100%;
                left: 0;
                padding: 15px 0;
                border-top: 1px solid rgba(255,255,255,0.1);
            }
            nav ul.active {
                display: flex;
            }
            nav ul li {
                margin: 0;
                text-align: center;
            }
            nav ul li a {
                display: block;
                padding: 12px;
                border-bottom: 1px solid rgba(255,255,255,0.05);
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input,
            .search-form button {
                border-radius: 30px;
                margin-bottom: 10px;
            }
        }