* {
            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;
            padding-top: 80px; 
        }
        a {
            color: #2c6ca8;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #1a4f7a;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1e3c72, #2a5298);
            color: white;
            position: fixed;
            top: 0;
            left: 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;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo a {
            color: white;
        }
        .my-logo i {
            font-size: 2rem;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        nav {
            display: flex;
            justify-content: center;
            background: rgba(255, 255, 255, 0.1);
            padding: 10px;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        nav a {
            color: white;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 4px;
        }
        nav a:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        .breadcrumb {
            padding: 10px 20px;
            background: #e9ecef;
            color: #6c757d;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #2c6ca8;
        }
        main {
            background: white;
            margin: 20px auto;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        h1 {
            font-size: 2.5rem;
            color: #1e3c72;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: #2a5298;
            margin: 30px 0 15px;
            border-bottom: 2px solid #e9ecef;
            padding-bottom: 10px;
        }
        h3 {
            font-size: 1.6rem;
            color: #3a6ea5;
            margin: 25px 0 10px;
        }
        h4 {
            font-size: 1.3rem;
            color: #5a8dbc;
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .highlight {
            background: #fffacd;
            padding: 15px;
            border-left: 4px solid #ffd700;
            margin: 20px 0;
            font-style: italic;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .content-img {
            margin: 25px auto;
            max-width: 800px;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .last-updated {
            text-align: right;
            font-size: 0.9rem;
            color: #6c757d;
            margin-top: 30px;
            padding-top: 10px;
            border-top: 1px dashed #dee2e6;
        }
        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin: 40px 0;
        }
        .feature-box {
            background: #f1f8ff;
            padding: 25px;
            border-radius: 8px;
            border: 1px solid #cfe2ff;
        }
        .feature-box h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        input, textarea, select {
            padding: 12px;
            border: 1px solid #ced4da;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
        }
        button {
            background: linear-gradient(to right, #1e3c72, #2a5298);
            color: white;
            border: none;
            padding: 12px 20px;
            border-radius: 6px;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s ease;
        }
        button:hover {
            background: linear-gradient(to right, #152a57, #1e3c72);
        }
        footer {
            background: #343a40;
            color: white;
            padding: 40px 20px;
            margin-top: 40px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }
        .footer-section h3 {
            color: #ffd700;
            margin-bottom: 15px;
            border-bottom: 1px solid #495057;
            padding-bottom: 5px;
        }
        .friend-links {
            list-style: none;
        }
        .friend-links li {
            margin-bottom: 10px;
        }
        .friend-links a {
            color: #adb5bd;
        }
        .friend-links a:hover {
            color: white;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            margin-top: 20px;
            border-top: 1px solid #495057;
            font-size: 0.9rem;
            color: #adb5bd;
        }
        @media (max-width: 768px) {
            body {
                padding-top: 70px;
            }
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #1e3c72;
                padding: 15px;
            }
            nav.active {
                display: flex;
            }
            nav ul {
                flex-direction: column;
                gap: 15px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            main {
                padding: 20px;
            }
            .features {
                grid-template-columns: 1fr;
            }
        }