* {
            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;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .header {
            background: linear-gradient(135deg, #1a237e, #283593);
            color: #fff;
            padding: 1rem 2rem;
            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 a {
            font-size: 1.8rem;
            font-weight: 700;
            color: #ffcc00;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo a:hover {
            color: #fff;
        }
        .nav-desktop {
            display: flex;
            gap: 1.5rem;
        }
        .nav-desktop a {
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .nav-desktop a:hover {
            background-color: #ffcc00;
            color: #1a237e;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: #283593;
            padding: 1rem;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            z-index: 1000;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            padding: 0.8rem;
            border-bottom: 1px solid #3949ab;
        }
        .nav-mobile a:hover {
            background-color: #ffcc00;
            color: #1a237e;
        }
        .breadcrumb {
            background-color: #e8eaf6;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: #283593;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
        }
        .content {
            background-color: #fff;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.05);
        }
        .sidebar {
            background-color: #fff;
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.05);
        }
        h1 {
            font-size: 2.5rem;
            color: #1a237e;
            margin-bottom: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: #283593;
            margin-top: 2rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ffcc00;
        }
        h3 {
            font-size: 1.5rem;
            color: #3949ab;
            margin-top: 1.5rem;
            margin-bottom: 0.8rem;
        }
        h4 {
            font-size: 1.2rem;
            color: #5c6bc0;
            margin-top: 1.2rem;
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fff9c4;
            padding: 1rem;
            border-left: 4px solid #ffcc00;
            margin: 1.5rem 0;
            font-weight: bold;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.5rem;
        }
        .image-container {
            text-align: center;
            margin: 2rem 0;
        }
        .image-container img {
            border-radius: 8px;
            box-shadow: 0 6px 12px rgba(0,0,0,0.1);
        }
        .link-list {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .link-list a {
            background-color: #e8eaf6;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            transition: all 0.3s ease;
        }
        .link-list a:hover {
            background-color: #ffcc00;
            color: #1a237e;
        }
        .form-section {
            background-color: #f3f4f9;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .form-section h3 {
            color: #1a237e;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        input, textarea, select {
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 4px;
            font-size: 1rem;
        }
        button {
            background-color: #283593;
            color: #fff;
            padding: 0.8rem 1.5rem;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 1rem;
            transition: background-color 0.3s ease;
        }
        button:hover {
            background-color: #1a237e;
        }
        .footer {
            background-color: #1a237e;
            color: #fff;
            padding: 2rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .friend-links h3 {
            color: #ffcc00;
            margin-bottom: 1rem;
        }
        .friend-links ul {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .friend-links a {
            color: #bbdefb;
            transition: color 0.3s ease;
        }
        .friend-links a:hover {
            color: #ffcc00;
        }
        .copyright {
            text-align: center;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid #3949ab;
            font-size: 0.9rem;
            color: #bbdefb;
        }
        @media (max-width: 992px) {
            .container {
                grid-template-columns: 1fr;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
        }
        @media (max-width: 768px) {
            .header, .breadcrumb, .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
        }