* {
            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;
            padding-top: 80px;
        }
        a {
            color: #28a745;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #1e7e34;
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #2ecc71, #1abc9c);
            color: white;
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: bold;
            color: white;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            margin-left: 25px;
        }
        .nav-links a {
            color: white;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 4px;
        }
        .nav-links a:hover {
            background-color: rgba(255,255,255,0.2);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: white;
        }
        .breadcrumb {
            padding: 10px 20px;
            background-color: #e9f7ef;
            font-size: 0.9rem;
            color: #555;
        }
        .breadcrumb a {
            color: #28a745;
        }
        main {
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            padding: 30px;
            margin: 20px auto;
        }
        h1 {
            color: #2c3e50;
            font-size: 2.5rem;
            margin-bottom: 20px;
            border-bottom: 3px solid #2ecc71;
            padding-bottom: 10px;
        }
        h2 {
            color: #27ae60;
            font-size: 2rem;
            margin: 30px 0 15px;
            padding-top: 10px;
        }
        h3 {
            color: #16a085;
            font-size: 1.6rem;
            margin: 25px 0 10px;
        }
        h4 {
            color: #1abc9c;
            font-size: 1.3rem;
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .highlight {
            background-color: #f1f8e9;
            border-left: 4px solid #7cb342;
            padding: 15px;
            margin: 20px 0;
            font-style: italic;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            margin: 20px 0;
            display: block;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        .float-right {
            float: right;
            margin-left: 20px;
            max-width: 400px;
        }
        .clearfix::after {
            content: "";
            clear: both;
            display: table;
        }
        .functional-section {
            background: #f1f8ff;
            border-radius: 8px;
            padding: 20px;
            margin: 30px 0;
            border: 1px solid #d1e7ff;
        }
        .functional-section h3 {
            color: #2c3e50;
            margin-top: 0;
        }
        form {
            display: grid;
            gap: 15px;
            max-width: 500px;
        }
        input, textarea, select {
            padding: 12px;
            border: 1px solid #ccc;
            border-radius: 5px;
            width: 100%;
            font-size: 1rem;
        }
        button {
            background: #28a745;
            color: white;
            border: none;
            padding: 12px 20px;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.3s;
        }
        button:hover {
            background: #1e7e34;
        }
        .rating {
            display: flex;
            gap: 10px;
            align-items: center;
        }
        .star {
            font-size: 1.5rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        footer {
            background: #2c3e50;
            color: white;
            padding: 40px 0 20px;
            margin-top: 40px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-section h3 {
            color: #2ecc71;
            margin-bottom: 15px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #bdc3c7;
        }
        .footer-links a:hover {
            color: white;
        }
        friend-link {
            display: block;
            padding: 15px;
            background: #34495e;
            border-radius: 5px;
            margin: 10px 0;
            border-left: 4px solid #2ecc71;
        }
        friend-link a {
            color: #2ecc71;
            font-weight: bold;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #34495e;
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            body {
                padding-top: 70px;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #2ecc71;
                padding: 20px;
                box-shadow: 0 5px 10px rgba(0,0,0,0.1);
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links li {
                margin: 10px 0;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .float-right {
                float: none;
                margin: 20px 0;
                max-width: 100%;
            }
        }