* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #1e3a8a; 
            --secondary: #dc2626; 
            --accent: #f59e0b; 
            --light: #f8fafc;
            --dark: #0f172a;
            --gray: #64748b;
            --success: #10b981;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f1f5f9;
            color: #334155;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        section {
            padding: 40px 0;
        }
        header {
            background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
            color: white;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--accent);
        }
        .my-logo span {
            background: linear-gradient(90deg, var(--accent), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .desktop-nav a {
            color: white;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 5px;
        }
        .desktop-nav a:hover,
        .desktop-nav a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: var(--accent);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            background-color: var(--dark);
            padding: 20px;
        }
        .mobile-nav.active {
            display: block;
        }
        .mobile-nav ul {
            list-style: none;
        }
        .mobile-nav li {
            margin-bottom: 15px;
        }
        .mobile-nav a {
            color: white;
            font-weight: 600;
            display: block;
            padding: 10px;
            border-radius: 5px;
        }
        .mobile-nav a:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            background-color: rgba(255, 255, 255, 0.05);
            padding: 12px 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #cbd5e1;
        }
        .breadcrumb a:hover {
            color: white;
        }
        .breadcrumb span {
            color: var(--accent);
            margin: 0 8px;
        }
        main {
            flex: 1;
            background-color: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            margin: 30px auto;
            padding: 40px;
            width: 95%;
            max-width: 1100px;
        }
        h1 {
            color: var(--dark);
            font-size: 2.8rem;
            margin-bottom: 25px;
            line-height: 1.2;
            border-left: 6px solid var(--secondary);
            padding-left: 20px;
        }
        h2 {
            color: var(--primary);
            font-size: 2rem;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px dashed var(--accent);
        }
        h3 {
            color: var(--secondary);
            font-size: 1.6rem;
            margin: 30px 0 15px;
        }
        h4 {
            color: var(--gray);
            font-size: 1.3rem;
            margin: 25px 0 12px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            color: var(--dark);
            background: linear-gradient(to right, #fef3c7, #fde68a);
            padding: 25px;
            border-radius: 10px;
            margin-bottom: 35px;
            border-left: 5px solid var(--accent);
        }
        .highlight {
            background-color: #f0f9ff;
            border-left: 4px solid var(--primary);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .feature-img {
            width: 80%;
            margin: 30px auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            border: 3px solid var(--primary);
        }
        .feature-img figcaption {
            text-align: center;
            font-style: italic;
            padding: 10px;
            background-color: #f8fafc;
            color: var(--gray);
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .link-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin: 30px 0;
        }
        .link-card {
            background: linear-gradient(145deg, #ffffff, #e2e8f0);
            border-radius: 10px;
            padding: 20px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .link-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        .link-card a {
            color: var(--primary);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .link-card i {
            color: var(--secondary);
        }
        .interactive-module {
            background-color: #f8fafc;
            border-radius: 12px;
            padding: 30px;
            margin: 50px 0;
            border: 1px solid #e2e8f0;
        }
        .module-title {
            display: flex;
            align-items: center;
            gap: 15px;
            color: var(--primary);
            margin-bottom: 25px;
        }
        .module-title i {
            font-size: 2rem;
            color: var(--accent);
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
        }
        input, textarea, select {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #cbd5e1;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.2);
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, var(--primary), var(--secondary));
            color: white;
            font-weight: 700;
            padding: 14px 28px;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
        }
        .btn:hover {
            transform: scale(1.05);
            box-shadow: 0 5px 15px rgba(220, 38, 38, 0.4);
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .star {
            font-size: 2rem;
            color: #d1d5db;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: var(--accent);
        }
        .comments-section {
            margin-top: 40px;
        }
        .comment {
            background-color: white;
            padding: 20px;
            border-radius: 10px;
            margin-bottom: 20px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 10px;
            font-size: 0.9rem;
            color: var(--gray);
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h4 {
            color: white;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 10px;
            margin-bottom: 20px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #cbd5e1;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: inline-block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 8px 15px;
            border-radius: 20px;
            margin: 5px;
            color: #cbd5e1;
            font-size: 0.9rem;
        }
        friend-link a {
            color: var(--accent);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #334155;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.3rem; }
            h2 { font-size: 1.8rem; }
            main { padding: 30px; }
            .desktop-nav { display: none; }
            .mobile-menu-btn { display: block; }
        }
        @media (max-width: 768px) {
            .container, main { padding-left: 15px; padding-right: 15px; }
            h1 { font-size: 2rem; }
            .intro { font-size: 1.1rem; padding: 20px; }
            .interactive-module { padding: 20px; }
            .link-list { grid-template-columns: 1fr; }
            .footer-content { grid-template-columns: 1fr; text-align: center; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 1.8rem; }
            .my-logo { font-size: 1.5rem; }
            .btn { width: 100%; }
        }