* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: #2a7de1;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #1a5cb0;
        }
        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 0%, #2a5298 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -1px;
            background: linear-gradient(to right, #4facfe, #00f2fe);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .my-logo a {
            background: none;
            -webkit-text-fill-color: inherit;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: #e3f2fd;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 0.5rem 0;
            position: relative;
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #00f2fe;
            transition: width 0.3s ease;
        }
        nav a:hover {
            color: white;
        }
        nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #e9ecef;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #555;
        }
        .breadcrumb a:hover {
            color: #1e3c72;
        }
        .breadcrumb span {
            color: #888;
        }
        main {
            flex: 1;
            padding: 2rem 0;
        }
        article {
            background-color: white;
            border-radius: 12px;
            padding: 3rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin-bottom: 2rem;
        }
        h1 {
            font-size: 3.2rem;
            color: #1e3c72;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #4facfe;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2.2rem;
            color: #2a5298;
            margin: 2.5rem 0 1.2rem;
            padding-top: 1rem;
        }
        h3 {
            font-size: 1.7rem;
            color: #3a6bc9;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #555;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.3rem;
            color: #444;
            font-weight: 500;
            background-color: #f0f8ff;
            padding: 1.5rem;
            border-left: 5px solid #4facfe;
            border-radius: 0 8px 8px 0;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fffacd;
            padding: 0.2rem 0.4rem;
            border-radius: 3px;
            font-weight: 600;
        }
        .img-container {
            margin: 2.5rem auto;
            text-align: center;
        }
        .img-container img {
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            max-height: 500px;
            object-fit: cover;
            width: 100%;
        }
        .caption {
            font-style: italic;
            color: #666;
            margin-top: 0.8rem;
            font-size: 0.95rem;
        }
        .feature-box {
            background: linear-gradient(to bottom right, #f8f9fa, #e9ecef);
            border: 1px solid #dee2e6;
            border-radius: 10px;
            padding: 2rem;
            margin: 3rem 0;
            text-align: center;
        }
        .feature-box h3 {
            color: #1e3c72;
            margin-top: 0;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            max-width: 600px;
            margin: 1.5rem auto;
        }
        input, textarea, select {
            padding: 0.9rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #4facfe;
            box-shadow: 0 0 0 3px rgba(79, 172, 254, 0.2);
        }
        button {
            background: linear-gradient(to right, #2a5298, #1e3c72);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        button:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(30, 60, 114, 0.2);
        }
        .rating {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            font-size: 2rem;
            margin: 1rem 0;
        }
        .rating i {
            color: #ffd700;
            cursor: pointer;
            transition: transform 0.2s;
        }
        .rating i:hover {
            transform: scale(1.2);
        }
        footer {
            background-color: #1a1a2e;
            color: #ccc;
            padding: 3rem 0 2rem;
            margin-top: auto;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #4facfe;
            margin-bottom: 1.5rem;
            font-size: 1.2rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
        }
        friend-link a {
            color: #aaa;
        }
        friend-link a:hover {
            color: #4facfe;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #333;
            font-size: 0.9rem;
            color: #888;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.7rem; }
            h2 { font-size: 2rem; }
            article { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: #1e3c72;
                padding: 1rem 0;
                margin-top: 1rem;
                border-radius: 8px;
                gap: 0;
            }
            nav ul.active {
                display: flex;
            }
            nav ul li {
                text-align: center;
                padding: 0.8rem;
            }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .intro { font-size: 1.1rem; }
            article { padding: 1.5rem; }
            .feature-box { padding: 1.5rem; }
        }
        @media (max-width: 480px) {
            .container { padding: 0 15px; }
            h1 { font-size: 1.9rem; }
            .my-logo { font-size: 1.8rem; }
            .breadcrumb { font-size: 0.8rem; }
        }