* {
            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: 1.6;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: #1e6bb8;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #e63946;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        header {
            background: linear-gradient(135deg, #0d3b66 0%, #1a759f 100%);
            color: white;
            padding: 1rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 900;
            text-transform: uppercase;
            letter-spacing: 2px;
            background: linear-gradient(90deg, #ffd166, #06d6a0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }
        .my-logo:hover {
            transform: scale(1.05);
            transition: transform 0.3s ease;
        }
        .main-nav {
            display: flex;
            gap: 2rem;
            align-items: center;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 5px;
        }
        .main-nav a:hover {
            background-color: rgba(255, 255, 255, 0.2);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            background: none;
            border: none;
            color: white;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.75rem 2rem;
            font-size: 0.9rem;
            border-bottom: 1px solid #ccc;
        }
        .breadcrumb a {
            color: #555;
        }
        .breadcrumb a:hover {
            color: #0d3b66;
        }
        main {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 1.5rem;
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        article {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.08);
        }
        h1 {
            font-size: 2.8rem;
            color: #0d3b66;
            margin-bottom: 1.5rem;
            text-align: center;
            border-bottom: 3px solid #06d6a0;
            padding-bottom: 1rem;
        }
        h2 {
            font-size: 2.2rem;
            color: #1a759f;
            margin: 2rem 0 1rem;
            padding-left: 0.5rem;
            border-left: 5px solid #ffd166;
        }
        h3 {
            font-size: 1.8rem;
            color: #118ab2;
            margin: 1.5rem 0 0.75rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #06d6a0;
            margin: 1.2rem 0 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .highlight {
            background-color: #ffeb3b;
            padding: 0.2rem 0.5rem;
            border-radius: 3px;
            font-weight: bold;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .content-link {
            color: #e63946;
            font-weight: 600;
            border-bottom: 1px dashed #e63946;
        }
        .content-link:hover {
            color: #0d3b66;
            border-bottom-style: solid;
        }
        .feature-image {
            width: 80%;
            margin: 2rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
            border: 5px solid #0d3b66;
        }
        .feature-image img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .feature-image img:hover {
            transform: scale(1.03);
        }
        .interactive-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }
        .form-box {
            background: #f1faee;
            border-radius: 10px;
            padding: 1.5rem;
            border: 2px solid #a8dadc;
        }
        .form-box h3 {
            color: #0d3b66;
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .form-box h3 i {
            color: #e63946;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        input, textarea, select {
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 5px;
            font-size: 1rem;
            width: 100%;
        }
        input:focus, textarea:focus, select:focus {
            outline: 2px solid #1a759f;
            border-color: #1a759f;
        }
        button {
            background: linear-gradient(to right, #0d3b66, #1a759f);
            color: white;
            border: none;
            padding: 0.9rem;
            border-radius: 5px;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        button:hover {
            background: linear-gradient(to right, #e63946, #ff6b6b);
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.5rem;
            color: #ffd700;
            cursor: pointer;
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        footer {
            background: #0d3b66;
            color: white;
            padding: 3rem 2rem 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h4 {
            color: #ffd166;
            margin-bottom: 1rem;
            font-size: 1.5rem;
        }
        friend-link {
            display: block;
            margin: 0.5rem 0;
            padding: 0.5rem;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 5px;
            transition: background 0.3s ease;
        }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        friend-link a {
            color: #a8dadc;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .copyright {
            text-align: center;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #1a759f;
            font-size: 0.9rem;
            color: #ccc;
        }
        @media (max-width: 768px) {
            header {
                flex-wrap: wrap;
                padding: 1rem;
            }
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0d3b66;
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
            }
            .main-nav.active {
                display: flex;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            article {
                padding: 1.5rem;
            }
            .feature-image {
                width: 100%;
            }
            .interactive-section {
                grid-template-columns: 1fr;
            }
        }
        @media print {
            .main-nav, .hamburger, .interactive-section, footer {
                display: none;
            }
            body {
                background: white;
                color: black;
            }
            article {
                box-shadow: none;
                padding: 0;
            }
        }