* {
            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;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .header {
            background: linear-gradient(135deg, #002366 0%, #00509e 100%);
            color: white;
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
            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;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            font-size: 2rem;
            color: #ffd700;
        }
        .logo a:hover {
            color: #ffd700;
            transition: color 0.3s;
        }
        .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: #ffd700;
            color: #002366;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            background: none;
            border: none;
            color: white;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: #002366;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            padding: 0.8rem;
            border-bottom: 1px solid #00509e;
            transition: background 0.3s;
        }
        .nav-mobile a:hover {
            background: #00509e;
        }
        .breadcrumb {
            padding: 0.5rem 2rem;
            background: #e9ecef;
            font-size: 0.9rem;
            color: #666;
        }
        .breadcrumb a:hover {
            color: #00509e;
            text-decoration: underline;
        }
        .main-container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        .article {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
        }
        .article h1 {
            font-size: 2.5rem;
            color: #002366;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article h2 {
            font-size: 2rem;
            color: #00509e;
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #ffd700;
        }
        .article h3 {
            font-size: 1.5rem;
            color: #333;
            margin: 1.5rem 0 0.8rem;
        }
        .article p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            line-height: 1.8;
            text-align: justify;
        }
        .article .highlight {
            background: #fffacd;
            padding: 1rem;
            border-left: 5px solid #ffd700;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .article emoji {
            font-size: 1.2rem;
            margin-right: 5px;
        }
        .article strong {
            color: #002366;
            font-weight: 700;
        }
        .article a {
            color: #00509e;
            font-weight: 600;
            transition: color 0.3s;
        }
        .article a:hover {
            color: #ffd700;
            text-decoration: underline;
        }
        .feature-image {
            margin: 2rem auto;
            text-align: center;
        }
        .feature-image img {
            border-radius: 10px;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
        }
        .interactive-section {
            background: #f1f8ff;
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .interactive-section h2 {
            color: #002366;
            border-bottom: none;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            max-width: 600px;
            margin: 0 auto;
        }
        input, textarea, select {
            padding: 0.8rem;
            border: 2px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            border-color: #00509e;
            outline: none;
        }
        button {
            background: #00509e;
            color: white;
            padding: 0.8rem 1.5rem;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: bold;
            transition: background 0.3s, transform 0.2s;
        }
        button:hover {
            background: #002366;
            transform: translateY(-2px);
        }
        .rating {
            display: flex;
            gap: 10px;
            align-items: center;
        }
        .stars {
            color: #ffd700;
            font-size: 1.5rem;
        }
        .stars i {
            cursor: pointer;
            transition: color 0.3s;
        }
        .stars i:hover {
            color: #ffaa00;
        }
        .footer {
            background: #002366;
            color: white;
            padding: 3rem 2rem 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h3 {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            color: #ffd700;
        }
        friend-link {
            display: block;
            margin-bottom: 0.5rem;
        }
        friend-link a {
            color: #ccccff;
            transition: color 0.3s;
        }
        friend-link a:hover {
            color: #ffd700;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #00509e;
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .main-container {
                padding: 0 1rem;
            }
            .article {
                padding: 1.5rem;
            }
            .article h1 {
                font-size: 2rem;
            }
            .article h2 {
                font-size: 1.7rem;
            }
            .breadcrumb {
                padding: 0.5rem 1rem;
                font-size: 0.8rem;
            }
            .footer-container {
                grid-template-columns: 1fr;
            }
        }