* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f9f9f9;
            overflow-x: hidden;
        }
        a {
            color: #0073e6;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #005bb5;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a1a2e, #16213e);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: bold;
            text-transform: uppercase;
            letter-spacing: 2px;
            background: linear-gradient(90deg, #00dbde, #fc00ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo a {
            background: none;
            -webkit-text-fill-color: inherit;
        }
        .nav-container {
            display: flex;
            align-items: center;
        }
        .main-nav {
            display: flex;
            list-style: none;
        }
        .main-nav li {
            margin-left: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 4px;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .breadcrumb {
            padding: 1rem 0;
            background: #e9ecef;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #555;
        }
        .breadcrumb a:hover {
            color: #0073e6;
        }
        main {
            padding: 2rem 0;
            background: white;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
            margin: 2rem auto;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 3px solid #0073e6;
        }
        h1 {
            font-size: 3rem;
            color: #1a1a2e;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2.2rem;
            color: #16213e;
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e9ecef;
        }
        h3 {
            font-size: 1.8rem;
            color: #333;
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            line-height: 1.8;
            text-align: justify;
            padding: 0 1rem;
        }
        .highlight {
            background: linear-gradient(120deg, #a1c4fd 0%, #c2e9fb 100%);
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
            border-left: 6px solid #0073e6;
        }
        .emoji {
            font-size: 1.5rem;
            margin-right: 0.5rem;
        }
        .link-box {
            display: inline-block;
            background: #f8f9fa;
            padding: 1rem 1.5rem;
            border-radius: 8px;
            margin: 1rem 0;
            border: 1px solid #dee2e6;
        }
        .link-box a {
            font-weight: bold;
        }
        .image-container {
            text-align: center;
            margin: 3rem 0;
        }
        .image-container img {
            max-width: 800px;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
        }
        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .feature-card {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: 12px;
            text-align: center;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid #dee2e6;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
        }
        .feature-card i {
            font-size: 3rem;
            color: #0073e6;
            margin-bottom: 1rem;
        }
        .form-section {
            background: #f1f8ff;
            padding: 2.5rem;
            border-radius: 12px;
            margin: 3rem 0;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #333;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            border-color: #0073e6;
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 115, 230, 0.2);
        }
        button {
            background: linear-gradient(90deg, #0073e6, #005bb5);
            color: white;
            border: none;
            padding: 1rem 2rem;
            font-size: 1.1rem;
            border-radius: 6px;
            cursor: pointer;
            transition: background 0.3s ease, transform 0.2s ease;
        }
        button:hover {
            background: linear-gradient(90deg, #005bb5, #004494);
            transform: scale(1.05);
        }
        .rating {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .rating i {
            color: #ffc107;
            cursor: pointer;
            font-size: 1.5rem;
            transition: color 0.3s ease;
        }
        .rating i:hover {
            color: #ff9800;
        }
        footer {
            background: #1a1a2e;
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            color: #00dbde;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
        }
        friend-link a {
            color: #ccc;
        }
        friend-link a:hover {
            color: #00dbde;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #333;
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            .nav-container {
                width: 100%;
                justify-content: space-between;
                align-items: center;
                margin-top: 1rem;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #16213e;
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                border-radius: 0 0 12px 12px;
            }
            .main-nav.active {
                display: flex;
            }
            .main-nav li {
                margin: 0.5rem 0;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .features {
                grid-template-columns: 1fr;
            }
            .form-section {
                padding: 1.5rem;
            }
        }