* {
            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;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        ul {
            list-style: none;
        }
        .header {
            background: linear-gradient(135deg, #2c3e50, #1a1a2e);
            color: #fff;
            padding: 1rem 2rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 2.5rem;
            font-weight: bold;
            color: #f1c40f;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            transition: transform 0.3s ease;
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-desktop a {
            padding: 0.5rem 1rem;
            border-radius: 5px;
            transition: background 0.3s, color 0.3s;
        }
        .nav-desktop a:hover {
            background: #f1c40f;
            color: #2c3e50;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            gap: 1rem;
            padding: 1rem;
            background: #1a1a2e;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            z-index: 1000;
        }
        .nav-mobile.active {
            display: flex;
        }
        .breadcrumb {
            max-width: 1200px;
            margin: 1rem auto;
            padding: 0 2rem;
            font-size: 0.9rem;
            color: #7f8c8d;
        }
        .breadcrumb a {
            color: #3498db;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        .article {
            background: #fff;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 6px 15px rgba(0,0,0,0.08);
        }
        h1 {
            font-size: 2.8rem;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            text-align: center;
        }
        h2 {
            font-size: 2rem;
            color: #2980b9;
            margin: 2rem 0 1rem;
            border-left: 5px solid #f1c40f;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.5rem;
            color: #16a085;
            margin: 1.5rem 0 0.8rem;
        }
        h4 {
            font-size: 1.2rem;
            color: #8e44ad;
            margin: 1rem 0 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .highlight {
            background: #fffde7;
            padding: 1rem;
            border-left: 4px solid #f1c40f;
            margin: 1.5rem 0;
        }
        .emoji {
            font-size: 1.2rem;
            margin-right: 0.5rem;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            margin: 1.5rem auto;
            display: block;
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
        }
        .link-inline {
            color: #e74c3c;
            font-weight: bold;
            transition: color 0.3s;
        }
        .link-inline:hover {
            color: #c0392b;
            text-decoration: underline;
        }
        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .feature-box {
            background: #ecf0f1;
            padding: 1.5rem;
            border-radius: 8px;
            text-align: center;
        }
        .feature-box h3 {
            color: #2c3e50;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        input, textarea, select {
            padding: 0.8rem;
            border: 1px solid #bdc3c7;
            border-radius: 5px;
            font-size: 1rem;
        }
        button {
            padding: 0.8rem;
            background: #2ecc71;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            transition: background 0.3s;
            font-size: 1rem;
        }
        button:hover {
            background: #27ae60;
        }
        .footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 2rem;
            text-align: center;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 2rem;
            margin-bottom: 1.5rem;
        }
        .footer-links a {
            color: #f1c40f;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .copyright {
            margin-top: 1rem;
            font-size: 0.9rem;
            color: #bdc3c7;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .features {
                grid-template-columns: 1fr;
            }
            .container {
                padding: 0 1rem;
            }
        }