* {
            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 {
            text-decoration: none;
            color: #2c3e50;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #e74c3c;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a237e, #4a148c);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 2px;
        }
        .logo a {
            color: #ffeb3b;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .logo a:hover {
            color: #fff;
        }
        .breadcrumb {
            background: #5c6bc0;
            padding: 0.8rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            margin-right: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: #ffeb3b;
        }
        .breadcrumb a {
            color: #e8eaf6;
        }
        .breadcrumb a:hover {
            color: #ffeb3b;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-desktop a {
            color: #ffeb3b;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: background 0.3s ease;
        }
        .nav-desktop a:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #ffeb3b;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: #1a237e;
            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: #ffeb3b;
            padding: 0.8rem;
            border-bottom: 1px solid #3949ab;
        }
        .nav-mobile a:hover {
            background: #3949ab;
        }
        main {
            padding: 2rem 0;
            background: white;
            border-radius: 8px;
            box-shadow: 0 4px 16px rgba(0,0,0,0.05);
            margin-top: 1rem;
        }
        .article-header {
            text-align: center;
            margin-bottom: 2.5rem;
            padding-bottom: 1.5rem;
            border-bottom: 3px solid #ffeb3b;
        }
        .article-header h1 {
            font-size: 3rem;
            color: #2c3e50;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            font-size: 0.95rem;
            color: #7f8c8d;
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .content {
            padding: 0 2rem;
        }
        .content h2 {
            font-size: 2.2rem;
            color: #1a237e;
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ffeb3b;
        }
        .content h3 {
            font-size: 1.8rem;
            color: #4a148c;
            margin: 2rem 0 1rem;
        }
        .content p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
            line-height: 1.8;
        }
        .content emoji {
            font-size: 1.2em;
            margin: 0 0.2rem;
        }
        .content strong {
            color: #e74c3c;
            font-weight: 700;
        }
        .content blockquote {
            border-left: 4px solid #ffeb3b;
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #555;
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        .image-container {
            text-align: center;
            margin: 2.5rem 0;
        }
        .image-container img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
            transition: transform 0.3s ease;
        }
        .image-container img:hover {
            transform: scale(1.02);
        }
        .image-caption {
            font-size: 0.95rem;
            color: #7f8c8d;
            margin-top: 0.5rem;
            font-style: italic;
        }
        .internal-links {
            background: #e8eaf6;
            padding: 1rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .internal-links p {
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .functional-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
            padding: 2rem;
            background: #f1f8ff;
            border-radius: 12px;
        }
        .functional-box {
            background: white;
            padding: 1.8rem;
            border-radius: 8px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        .functional-box h3 {
            color: #1a237e;
            margin-bottom: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .functional-box form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .functional-box input,
        .functional-box textarea,
        .functional-box select {
            padding: 0.8rem;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        .functional-box input:focus,
        .functional-box textarea:focus,
        .functional-box select:focus {
            border-color: #4a148c;
            outline: none;
        }
        .functional-box button {
            padding: 0.8rem;
            background: linear-gradient(to right, #1a237e, #4a148c);
            color: white;
            border: none;
            border-radius: 4px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        .functional-box button:hover {
            background: linear-gradient(to right, #4a148c, #1a237e);
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            font-size: 1.5rem;
            color: #ffc107;
            cursor: pointer;
        }
        .star-rating span:hover {
            color: #ff9800;
        }
        .footer-links {
            background: #2c3e50;
            color: white;
            padding: 2.5rem 0;
            margin-top: 3rem;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-bottom: 2rem;
        }
        .web-link {
            background: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 6px;
            transition: background 0.3s ease;
        }
        .web-link:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        .web-link a {
            color: #ffeb3b;
            font-weight: 500;
        }
        .copyright {
            text-align: center;
            padding: 1.5rem;
            background: #1a252f;
            color: #bdc3c7;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .logo {
                font-size: 1.8rem;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            .content {
                padding: 0 1rem;
            }
            .content h2 {
                font-size: 1.8rem;
            }
            .content h3 {
                font-size: 1.5rem;
            }
            .functional-section {
                grid-template-columns: 1fr;
                padding: 1.5rem;
            }
            .web-links-container {
                grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            }
        }
        @media (max-width: 480px) {
            .article-header h1 {
                font-size: 1.8rem;
            }
            .content p {
                font-size: 1rem;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        main, .functional-section, .footer-links {
            animation: fadeIn 0.8s ease-out;
        }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mt-2 { margin-top: 2rem; }