* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.6;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a237e, #283593);
            color: white;
            padding: 20px 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.5rem;
            font-weight: bold;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            color: #ffcc00;
            transform: scale(1.05);
            transition: all 0.3s ease;
        }
        .my-logo i {
            font-size: 2rem;
        }
        .breadcrumb {
            margin-top: 10px;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #bbdefb;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: #e0e0e0;
        }
        nav {
            display: flex;
            justify-content: center;
            background-color: #3949ab;
            border-radius: 8px;
            margin-top: 15px;
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            position: relative;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            padding: 15px 25px;
            display: block;
            font-weight: 500;
            transition: background 0.3s;
        }
        .nav-links a:hover {
            background-color: #5c6bc0;
            border-radius: 5px;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 10px;
        }
        main {
            padding: 30px 0;
            background: white;
            border-radius: 10px;
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.08);
            margin-top: 20px;
        }
        article {
            padding: 0 30px;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 20px;
            border-bottom: 4px solid #ffcc00;
            padding-bottom: 10px;
        }
        h2 {
            font-size: 2rem;
            color: #283593;
            margin-top: 40px;
            margin-bottom: 15px;
        }
        h3 {
            font-size: 1.6rem;
            color: #3949ab;
            margin-top: 30px;
            margin-bottom: 10px;
        }
        h4 {
            font-size: 1.3rem;
            color: #5c6bc0;
            margin-top: 20px;
            margin-bottom: 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
            font-size: 1.1rem;
            line-height: 1.8;
        }
        .highlight {
            background-color: #e3f2fd;
            padding: 15px;
            border-left: 5px solid #2196f3;
            margin: 20px 0;
            border-radius: 5px;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            margin: 25px auto;
            display: block;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .interactive-section {
            background-color: #f9f9f9;
            padding: 25px;
            border-radius: 10px;
            margin: 30px 0;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
        }
        form {
            display: grid;
            gap: 15px;
            margin-top: 15px;
        }
        input, textarea, select {
            padding: 12px;
            border: 1px solid #ccc;
            border-radius: 5px;
            font-size: 1rem;
            width: 100%;
        }
        button {
            padding: 12px 25px;
            background-color: #1a237e;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.3s;
        }
        button:hover {
            background-color: #283593;
        }
        .rating {
            display: flex;
            gap: 10px;
            align-items: center;
        }
        .rating i {
            color: #ffcc00;
            cursor: pointer;
            font-size: 1.5rem;
        }
        .rating i:hover {
            transform: scale(1.2);
        }
        footer {
            background-color: #1a237e;
            color: white;
            padding: 40px 0 20px;
            margin-top: 40px;
            border-top: 5px solid #ffcc00;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }
        friend-link {
            display: block;
            margin: 10px 0;
        }
        friend-link a {
            color: #bbdefb;
            text-decoration: none;
            padding: 8px 0;
            display: inline-block;
        }
        friend-link a:hover {
            color: #ffcc00;
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid #3949ab;
            font-size: 0.9rem;
            color: #e0e0e0;
        }
        @media (max-width: 768px) {
            .nav-links {
                flex-direction: column;
                display: none;
                width: 100%;
                background-color: #3949ab;
                border-radius: 8px;
                padding: 10px 0;
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links li {
                text-align: center;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            article {
                padding: 0 15px;
            }
            .header-top {
                flex-direction: column;
                align-items: flex-start;
                gap: 15px;
            }
        }