* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
            padding: 0;
            margin: 0;
        }
        header {
            background: linear-gradient(90deg, #1a2980, #26d0ce);
            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: 1400px;
            margin: 0 auto;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            transition: transform 0.3s ease;
            display: flex;
            align-items: center;
        }
        .logo a:hover {
            transform: scale(1.05);
        }
        .logo i {
            margin-right: 10px;
            font-size: 2.5rem;
        }
        .nav-container {
            display: flex;
            align-items: center;
        }
        .breadcrumb {
            margin-right: 2rem;
            font-size: 0.9rem;
            color: #c3cfe2;
        }
        .breadcrumb a {
            color: white;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-links li a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: background 0.3s, transform 0.2s;
        }
        .nav-links li a:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        main {
            max-width: 1400px;
            margin: 2rem auto;
            padding: 0 2rem;
            background: white;
            border-radius: 12px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            overflow: hidden;
        }
        .article-header {
            padding: 3rem 2rem 2rem;
            text-align: center;
            background: linear-gradient(120deg, #fdfbfb 0%, #ebedee 100%);
            border-bottom: 3px solid #26d0ce;
        }
        .article-header h1 {
            font-size: 3rem;
            color: #1a2980;
            margin-bottom: 1rem;
        }
        .article-meta {
            font-size: 1rem;
            color: #666;
            margin-bottom: 1.5rem;
        }
        .content {
            padding: 2rem;
        }
        .content section {
            margin-bottom: 3rem;
        }
        h2 {
            font-size: 2.2rem;
            color: #1a2980;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #26d0ce;
        }
        h3 {
            font-size: 1.8rem;
            color: #333;
            margin: 1.5rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            line-height: 1.9;
            text-align: justify;
        }
        .highlight {
            background: #fffacd;
            padding: 1.5rem;
            border-left: 5px solid #ffcc00;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .highlight strong {
            color: #1a2980;
        }
        .image-container {
            text-align: center;
            margin: 2.5rem 0;
        }
        .image-container img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
            transition: transform 0.4s ease;
        }
        .image-container img:hover {
            transform: scale(1.02);
        }
        .image-caption {
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .feature-box {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: 10px;
            border: 1px solid #ddd;
            transition: box-shadow 0.3s, transform 0.3s;
        }
        .feature-box:hover {
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            transform: translateY(-5px);
        }
        .feature-box h3 {
            color: #26d0ce;
            margin-bottom: 1rem;
        }
        .feature-box form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .feature-box input,
        .feature-box textarea,
        .feature-box select {
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .feature-box input:focus,
        .feature-box textarea:focus,
        .feature-box select:focus {
            border-color: #26d0ce;
            outline: none;
        }
        .feature-box button {
            background: linear-gradient(90deg, #1a2980, #26d0ce);
            color: white;
            border: none;
            padding: 1rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
        }
        .feature-box button:hover {
            background: linear-gradient(90deg, #26d0ce, #1a2980);
            transform: scale(1.05);
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating input:checked ~ label {
            color: #ffcc00;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            padding: 2rem;
            background: #1a2980;
            color: white;
        }
        .web-link {
            background: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 6px;
            transition: background 0.3s;
        }
        .web-link:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        .web-link a {
            color: #c3cfe2;
            text-decoration: none;
            font-weight: 500;
            display: block;
            transition: color 0.3s;
        }
        .web-link a:hover {
            color: white;
            text-decoration: underline;
        }
        footer {
            text-align: center;
            padding: 2rem;
            background: #0d1b2a;
            color: white;
            font-size: 0.9rem;
        }
        footer p {
            margin-bottom: 0.5rem;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #1a2980;
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links li {
                margin: 0.5rem 0;
            }
            .breadcrumb {
                margin: 1rem 0;
                width: 100%;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .features {
                grid-template-columns: 1fr;
            }
            .content {
                padding: 1.5rem;
            }
        }