* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a { color: #2a6ebb; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #e74c3c; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a237e 0%, #4a148c 100%);
            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;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: 900;
            color: #ffeb3b;
            text-shadow: 2px 2px 0 #d81b60;
        }
        .my-logo a { color: inherit; }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: #fff;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: 5px;
        }
        nav a:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: #ffeb3b;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #e9ecef;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #555; }
        .breadcrumb a:hover { color: #1a237e; }
        .breadcrumb span { color: #777; }
        main {
            background: white;
            padding: 2rem;
            margin: 2rem auto;
            border-radius: 15px;
            box-shadow: 0 5px 25px rgba(0,0,0,0.05);
        }
        article { max-width: 900px; margin: 0 auto; }
        h1, h2, h3, h4 {
            color: #2c3e50;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            border-bottom: 3px solid #ffeb3b;
            padding-bottom: 0.5rem;
        }
        h2 { font-size: 2.2rem; color: #4a148c; }
        h3 { font-size: 1.8rem; color: #6a1b9a; }
        h4 { font-size: 1.4rem; color: #8e24aa; }
        .intro {
            font-size: 1.3rem;
            color: #555;
            background: #f3e5f5;
            padding: 1.5rem;
            border-left: 5px solid #9c27b0;
            margin: 2rem 0;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .highlight {
            background-color: #fffde7;
            border-left: 4px solid #ffd600;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
        }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        ul, ol { padding-left: 2rem; margin-bottom: 1.5rem; }
        li { margin-bottom: 0.5rem; }
        .feature-img {
            width: 80%;
            margin: 2.5rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            border: 5px solid #e1bee7;
        }
        .feature-img figcaption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 0.8rem;
            background: #f5f5f5;
        }
        .module {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 2rem;
            margin: 3rem 0;
            border: 1px solid #ddd;
        }
        .module h2 { margin-top: 0; }
        form { display: grid; gap: 1.2rem; }
        input, textarea, select {
            padding: 0.9rem;
            border: 1px solid #bbb;
            border-radius: 8px;
            font-size: 1rem;
            width: 100%;
        }
        button {
            background: linear-gradient(to right, #1a237e, #4a148c);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        button:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(26, 35, 126, 0.4);
        }
        .stars { display: flex; gap: 0.5rem; font-size: 1.8rem; color: #ffd700; cursor: pointer; }
        .stars span:hover { color: #ffab00; }
        footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: #ffeb3b;
            margin-bottom: 1.5rem;
        }
        .footer-links a {
            color: #bdc3c7;
            display: block;
            margin-bottom: 0.8rem;
        }
        .footer-links a:hover { color: #ffeb3b; }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 1rem;
            border-radius: 8px;
            margin: 0.5rem 0;
            border-left: 4px solid #9c27b0;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a6278;
            font-size: 0.9rem;
            color: #95a5a6;
        }
        @media (max-width: 992px) {
            .container { padding: 0 15px; }
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
        }
        @media (max-width: 768px) {
            .header-content { flex-wrap: wrap; }
            .hamburger { display: block; }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #1a237e;
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                box-shadow: 0 10px 15px rgba(0,0,0,0.2);
            }
            nav.active ul { display: flex; }
            main { padding: 1.5rem; }
            .feature-img { width: 100%; }
        }
        @media (max-width: 576px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            .module { padding: 1.5rem; }
        }