* {
            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: #f8f9fa;
            padding: 0;
            margin: 0;
        }
        a {
            text-decoration: none;
            color: #2c8cff;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #0056b3;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .header {
            background: linear-gradient(135deg, #1e3c72, #2a5298);
            color: white;
            padding: 1rem 2rem;
            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;
            max-width: 1200px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            text-transform: uppercase;
            letter-spacing: 2px;
            display: flex;
            align-items: center;
        }
        .my-logo i {
            margin-right: 10px;
            color: #4dabf7;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-desktop a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 5px;
        }
        .nav-desktop a:hover {
            background-color: rgba(255,255,255,0.2);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: #1e3c72;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: white;
            padding: 0.8rem;
            border-bottom: 1px solid #2a5298;
        }
        .nav-mobile a:hover {
            background-color: #2a5298;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: #495057;
        }
        .breadcrumb a:hover {
            color: #1e3c72;
        }
        .container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        .main-content {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.08);
        }
        h1 {
            font-size: 2.8rem;
            color: #1e3c72;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 6px solid #4dabf7;
            padding-left: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: #2a5298;
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #e9ecef;
        }
        h3 {
            font-size: 1.6rem;
            color: #495057;
            margin: 1.5rem 0 0.8rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #6c757d;
            margin: 1.2rem 0 0.6rem;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.1rem;
            line-height: 1.8;
            color: #444;
        }
        .highlight {
            background-color: #fff3cd;
            padding: 1.5rem;
            border-left: 5px solid #ffc107;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .emoji {
            font-size: 1.2rem;
            margin-right: 5px;
        }
        .link-list {
            list-style: none;
            padding: 1rem;
            background-color: #f8f9fa;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        .link-list li {
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
        }
        .link-list i {
            color: #4dabf7;
            margin-right: 10px;
        }
        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .feature-box {
            background: linear-gradient(145deg, #e3f2fd, #bbdefb);
            padding: 1.8rem;
            border-radius: 10px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .feature-box:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .feature-box h3 {
            color: #1565c0;
        }
        .form-section {
            margin: 3rem 0;
            padding: 2rem;
            background-color: #f1f8ff;
            border-radius: 10px;
            border: 2px dashed #4dabf7;
        }
        .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;
            border: 2px solid #ced4da;
            border-radius: 6px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            border-color: #4dabf7;
            outline: none;
        }
        button {
            background: linear-gradient(to right, #1e3c72, #2a5298);
            color: white;
            padding: 0.9rem 2rem;
            border: none;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s ease, transform 0.2s;
        }
        button:hover {
            background: linear-gradient(to right, #2a5298, #1e3c72);
            transform: scale(1.03);
        }
        .rating {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .rating i {
            font-size: 1.8rem;
            color: #ffc107;
            cursor: pointer;
            transition: color 0.3s;
        }
        .rating i:hover {
            color: #ff9800;
        }
        .article-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
        }
        .footer {
            background: #1a1a2e;
            color: #ddd;
            padding: 3rem 2rem 2rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h3 {
            color: #4dabf7;
            margin-bottom: 1.2rem;
        }
        .footer-section ul {
            list-style: none;
        }
        .footer-section ul li {
            margin-bottom: 0.8rem;
        }
        .footer-section a {
            color: #aaa;
        }
        .footer-section a:hover {
            color: white;
        }
        friend-link {
            display: block;
            padding: 1rem;
            background-color: #2d3748;
            border-radius: 6px;
            margin: 1rem 0;
            color: #90cdf4;
            font-weight: 600;
        }
        friend-link a {
            color: #90cdf4;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #2d3748;
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .container {
                padding: 0 1rem;
            }
            .main-content {
                padding: 1.5rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .features {
                grid-template-columns: 1fr;
            }
            .form-section {
                padding: 1.5rem;
            }
        }