* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
            font-size: 18px;
        }
        a {
            text-decoration: none;
            color: #2c5aa0;
            transition: color 0.3s;
        }
        a:hover {
            color: #e63946;
        }
        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, #1e3c72, #2a5298);
            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: 900;
            color: #ffd700;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo:hover {
            color: #fff;
        }
        nav ul {
            display: flex;
            list-style: none;
        }
        nav ul li {
            margin-left: 1.8rem;
        }
        nav ul li a {
            color: white;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
        }
        nav ul li a:hover {
            background-color: rgba(255,255,255,0.15);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 20px;
            margin-bottom: 2rem;
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: #555;
        }
        .breadcrumb a:hover {
            color: #1e3c72;
        }
        main {
            padding: 2rem 0;
            background-color: white;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin-bottom: 2rem;
        }
        article {
            padding: 0 2rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #1e3c72;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #ffd700;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2.2rem;
            color: #2a5298;
            margin: 2.5rem 0 1rem;
            padding-left: 0.5rem;
            border-left: 5px solid #e63946;
        }
        h3 {
            font-size: 1.8rem;
            color: #457b9d;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.5rem;
            color: #1d3557;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            padding: 0 0.5rem;
        }
        .lead {
            font-size: 1.4rem;
            font-weight: 600;
            color: #444;
            background-color: #f1faee;
            padding: 1.2rem;
            border-radius: 8px;
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #ffeb3b;
            padding: 0.2rem 0.5rem;
            border-radius: 3px;
            font-weight: bold;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .image-container {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 800px;
        }
        .image-container img {
            border-radius: 12px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            border: 5px solid #fff;
        }
        .image-caption {
            font-style: italic;
            color: #666;
            margin-top: 0.8rem;
            font-size: 0.95rem;
        }
        .feature-box {
            background: linear-gradient(to right, #a8dadc, #f1faee);
            border-left: 6px solid #e63946;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .feature-box h3 {
            margin-top: 0;
            color: #1d3557;
        }
        .interaction {
            background-color: #f8f9fa;
            border: 2px dashed #adb5bd;
            border-radius: 10px;
            padding: 2rem;
            margin: 3rem 0;
            text-align: center;
        }
        .interaction h3 {
            color: #e63946;
        }
        .interaction form {
            display: flex;
            flex-direction: column;
            max-width: 600px;
            margin: 1.5rem auto;
            gap: 1rem;
        }
        .interaction input,
        .interaction textarea,
        .interaction select {
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
        }
        .interaction button {
            background-color: #2a5298;
            color: white;
            border: none;
            padding: 1rem;
            border-radius: 6px;
            font-size: 1.1rem;
            cursor: pointer;
            transition: background 0.3s;
        }
        .interaction button:hover {
            background-color: #1e3c72;
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            font-size: 2rem;
            color: #ffd700;
            margin: 1rem 0;
        }
        .star-rating i {
            cursor: pointer;
        }
        footer {
            background-color: #1d3557;
            color: white;
            padding: 3rem 0 1.5rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #ffd700;
            margin-bottom: 1.2rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #a8dadc;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
            transition: all 0.3s;
        }
        friend-link {
            display: block;
            background-color: #2a5298;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        friend-link a {
            color: #ffd700;
            font-weight: bold;
            font-size: 1.2rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #457b9d;
            font-size: 0.9rem;
            color: #ccc;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            .header-container { flex-direction: column; align-items: flex-start; }
            nav ul { flex-direction: column; width: 100%; margin-top: 1rem; display: none; }
            nav ul.active { display: flex; }
            nav ul li { margin: 0; border-bottom: 1px solid rgba(255,255,255,0.1); }
            nav ul li a { display: block; padding: 1rem; }
            .hamburger { display: block; position: absolute; top: 1.5rem; right: 20px; }
            article { padding: 0 1rem; }
        }
        @media (max-width: 768px) {
            body { font-size: 16px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.8rem; }
            .interaction form { width: 100%; }
            .footer-container { grid-template-columns: 1fr; }
        }
        .text-center { text-align: center; }
        .mt-3 { margin-top: 3rem; }
        .mb-3 { margin-bottom: 3rem; }
        .last-updated {
            font-size: 0.9rem;
            color: #666;
            text-align: right;
            margin-bottom: 1rem;
            font-style: italic;
        }