* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #0f1419;
            color: #e0e6ef;
            line-height: 1.7;
            overflow-x: hidden;
            padding-top: 80px; 
        }
        a {
            color: #4dabf7;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #339af0;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        section {
            margin-bottom: 3rem;
            padding: 2rem;
            background: rgba(25, 32, 44, 0.7);
            border-radius: 12px;
            border-left: 4px solid #339af0;
        }
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(15, 20, 30, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            padding: 1rem 0;
            border-bottom: 1px solid #2d3748;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #339af0, #5c7cfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            text-decoration: none;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .nav-links a {
            font-weight: 600;
            font-size: 1.05rem;
            color: #cbd5e0;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-links a:hover {
            color: #fff;
            text-decoration: none;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #339af0;
            transition: width 0.3s ease;
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
            padding: 10px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background: #e0e6ef;
            border-radius: 2px;
            transition: 0.3s;
        }
        .breadcrumb {
            padding: 1rem 2rem;
            background: #1a202c;
            font-size: 0.9rem;
            color: #a0aec0;
            margin-bottom: 2rem;
        }
        .breadcrumb a {
            color: #a0aec0;
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        main {
            padding: 2rem 0;
        }
        h1 {
            font-size: 3.2rem;
            margin-bottom: 1.5rem;
            background: linear-gradient(90deg, #fff, #5c7cfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
            text-align: center;
        }
        h2 {
            font-size: 2.4rem;
            margin: 2.5rem 0 1.2rem;
            color: #5c7cfa;
            border-bottom: 2px solid #2d3748;
            padding-bottom: 0.5rem;
        }
        h3 {
            font-size: 1.8rem;
            margin: 2rem 0 1rem;
            color: #74c0fc;
        }
        h4 {
            font-size: 1.4rem;
            margin: 1.5rem 0 0.8rem;
            color: #a5d8ff;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background: rgba(51, 154, 240, 0.15);
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 5px solid #339af0;
            margin: 1.5rem 0;
            font-weight: 600;
        }
        .feature-img {
            width: 80%;
            margin: 2.5rem auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
            border: 2px solid #339af0;
        }
        .feature-img figcaption {
            text-align: center;
            font-style: italic;
            padding: 0.8rem;
            color: #a0aec0;
            background: #1a202c;
        }
        .user-module {
            background: #1a202c;
            padding: 2rem;
            border-radius: 12px;
            margin: 2.5rem 0;
            border: 1px solid #4a5568;
        }
        .module-title {
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            color: #5c7cfa;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .module-title i {
            font-size: 1.8rem;
        }
        form {
            display: grid;
            gap: 1.2rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        label {
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #cbd5e0;
        }
        input, textarea, select {
            padding: 0.8rem 1rem;
            background: #2d3748;
            border: 1px solid #4a5568;
            border-radius: 8px;
            color: #e0e6ef;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #339af0;
            box-shadow: 0 0 0 3px rgba(51, 154, 240, 0.2);
        }
        button {
            padding: 0.9rem 1.8rem;
            background: linear-gradient(90deg, #339af0, #5c7cfa);
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1.1rem;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
            justify-self: start;
        }
        button:hover {
            transform: translateY(-2px);
            box-shadow: 0 7px 14px rgba(51, 154, 240, 0.4);
        }
        .star-rating {
            display: flex;
            gap: 10px;
            font-size: 2rem;
            color: #4a5568;
            cursor: pointer;
            margin: 1rem 0;
        }
        .star-rating .star {
            transition: color 0.2s;
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: #ffd43b;
        }
        .related-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 3rem 0;
        }
        .link-card {
            background: #1a202c;
            padding: 1.5rem;
            border-radius: 10px;
            border: 1px solid #4a5568;
            transition: transform 0.3s, border-color 0.3s;
        }
        .link-card:hover {
            transform: translateY(-5px);
            border-color: #339af0;
        }
        .link-card h4 {
            margin-top: 0;
            color: #74c0fc;
        }
        footer {
            background: #0a0e14;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
            border-top: 1px solid #2d3748;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2.5rem;
        }
        .footer-section h3 {
            color: #5c7cfa;
            font-size: 1.4rem;
            margin-bottom: 1.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        friend-link {
            display: inline-block;
            background: rgba(51, 154, 240, 0.1);
            padding: 0.5rem 1rem;
            border-radius: 20px;
            margin-right: 0.8rem;
            margin-bottom: 0.8rem;
            border: 1px solid #339af0;
        }
        friend-link a {
            color: #74c0fc;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2d3748;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.7rem; }
            h2 { font-size: 2.1rem; }
            .nav-links {
                gap: 1.2rem;
            }
        }
        @media (max-width: 768px) {
            body {
                padding-top: 70px;
            }
            .hamburger {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(15, 20, 30, 0.98);
                flex-direction: column;
                align-items: center;
                padding: 2rem 0;
                gap: 0;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: clip-path 0.4s ease-in-out;
            }
            .nav-links.active {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
            .nav-links li {
                width: 100%;
                text-align: center;
            }
            .nav-links a {
                display: block;
                padding: 1.2rem;
                border-bottom: 1px solid #2d3748;
            }
            .nav-links a::after {
                display: none;
            }
            .hamburger.active span:nth-child(1) {
                transform: rotate(45deg) translate(6px, 6px);
            }
            .hamburger.active span:nth-child(2) {
                opacity: 0;
            }
            .hamburger.active span:nth-child(3) {
                transform: rotate(-45deg) translate(6px, -6px);
            }
            .feature-img {
                width: 95%;
            }
            .related-links {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 576px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            section, .user-module {
                padding: 1.5rem;
            }
            .container {
                padding: 0 15px;
            }
        }