* { 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: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            padding-bottom: 40px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        img { max-width: 100%; height: auto; display: block; }
        header {
            background: linear-gradient(90deg, #1a237e, #283593);
            color: white;
            padding: 1rem 0;
            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;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: #FFD700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            font-family: 'Arial Black', sans-serif;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            transition: transform 0.3s ease, color 0.3s ease;
        }
        .my-logo:hover {
            transform: scale(1.05);
            color: #fff;
        }
        .my-logo span { color: #4fc3f7; }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            color: #e3f2fd;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .desktop-nav a:hover,
        .desktop-nav a.active {
            background: rgba(255, 255, 255, 0.15);
            color: #FFD700;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: #1a237e;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }
        .mobile-nav.active { display: flex; }
        .mobile-nav a {
            color: #e3f2fd;
            padding: 0.8rem;
            text-decoration: none;
            border-bottom: 1px solid #283593;
        }
        .mobile-nav a:hover { background: #283593; }
        .breadcrumb {
            padding: 1rem 0;
            background: #e8eaf6;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #283593;
            text-decoration: none;
        }
        .breadcrumb a:hover { text-decoration: underline; }
        main { padding: 2rem 0; }
        article {
            background: white;
            border-radius: 12px;
            padding: 3rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            margin-bottom: 2rem;
        }
        h1 {
            font-size: 3.2rem;
            color: #1a237e;
            margin-bottom: 1.5rem;
            border-bottom: 4px solid #FFD700;
            padding-bottom: 0.5rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2.3rem;
            color: #283593;
            margin: 2.5rem 0 1rem;
            padding-left: 10px;
            border-left: 6px solid #4fc3f7;
        }
        h3 {
            font-size: 1.8rem;
            color: #3949ab;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #5c6bc0;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 600;
            color: #1a237e;
            background: #e8eaf6;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 5px solid #FFD700;
        }
        .highlight {
            background: linear-gradient(120deg, #e1f5fe 0%, #b3e5fc 100%);
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
            border-left: 5px solid #0288d1;
        }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        .content-link {
            color: #1565c0;
            text-decoration: none;
            font-weight: 600;
            border-bottom: 2px dotted #1565c0;
            transition: all 0.2s ease;
        }
        .content-link:hover {
            color: #0d47a1;
            border-bottom-style: solid;
            background-color: #e3f2fd;
        }
        .article-img {
            width: 80%;
            margin: 2.5rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
        }
        .article-img img {
            width: 100%;
            height: auto;
            transition: transform 0.5s ease;
        }
        .article-img:hover img { transform: scale(1.03); }
        .caption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 0.8rem;
            background: #f5f5f5;
        }
        .interactive-section {
            background: #f9f9f9;
            border-radius: 12px;
            padding: 2.5rem;
            margin: 3rem 0;
            border: 1px solid #e0e0e0;
        }
        .interactive-section h3 { margin-top: 0; }
        form {
            display: grid;
            gap: 1.5rem;
            max-width: 700px;
        }
        .form-group { display: flex; flex-direction: column; }
        label {
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: #333;
        }
        input, textarea, select {
            padding: 0.9rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #283593;
            box-shadow: 0 0 0 3px rgba(40, 53, 147, 0.1);
        }
        .rating {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
        }
        .rating .star:hover,
        .rating .star.active { color: #FFD700; }
        button {
            background: linear-gradient(90deg, #1a237e, #283593);
            color: white;
            border: none;
            padding: 1rem 2rem;
            font-size: 1.1rem;
            border-radius: 6px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 600;
            justify-self: start;
        }
        button:hover {
            background: linear-gradient(90deg, #283593, #3949ab);
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(0,0,0,0.15);
        }
        .last-updated {
            text-align: right;
            font-style: italic;
            color: #666;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid #ddd;
        }
        footer {
            background: #1a237e;
            color: #e3f2fd;
            padding: 3rem 0 2rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-section h3 {
            color: #FFD700;
            margin-bottom: 1.5rem;
            font-size: 1.5rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
        }
        friend-link a {
            color: #bbdefb;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        friend-link a:hover { color: #FFD700; }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #283593;
            font-size: 0.95rem;
            color: #90caf9;
        }
        @media (max-width: 992px) {
            .container { padding: 0 15px; }
            h1 { font-size: 2.8rem; }
            h2 { font-size: 2rem; }
            article { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .hamburger { display: block; }
            .header-container { flex-wrap: wrap; }
            h1 { font-size: 2.3rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .article-img { width: 100%; }
            .interactive-section { padding: 1.8rem; }
            .footer-container { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 1.9rem; }
            .lead { font-size: 1.1rem; }
            article { padding: 1.5rem; }
        }