* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #7c4dff;
            --primary-dark: #5e35b1;
            --secondary: #00bcd4;
            --dark: #1a1a2e;
            --light: #f8f9fa;
            --gray: #6c757d;
            --success: #28a745;
            --warning: #ffc107;
            --danger: #dc3545;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f5f7ff;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: var(--primary);
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section-padding {
            padding: 60px 0;
        }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 0.5rem; }
        .mb-2 { margin-bottom: 1rem; }
        .mb-3 { margin-bottom: 1.5rem; }
        .mb-4 { margin-bottom: 2.5rem; }
        .mt-4 { margin-top: 2.5rem; }
        .d-flex { display: flex; }
        .flex-column { flex-direction: column; }
        .align-center { align-items: center; }
        .justify-between { justify-content: space-between; }
        .grid {
            display: grid;
            gap: 30px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background-color: var(--primary);
            color: white;
            border: none;
            border-radius: var(--radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .btn-secondary {
            background-color: var(--secondary);
        }
        .btn-secondary:hover {
            background-color: #0097a7;
        }
        header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            padding: 15px 0;
            border-bottom: 1px solid #eee;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .search-form {
            max-width: 400px;
            width: 100%;
        }
        .search-form input {
            width: 100%;
            padding: 12px 20px;
            border: 2px solid #ddd;
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--dark);
            cursor: pointer;
        }
        nav {
            padding: 15px 0;
        }
        .nav-list {
            list-style: none;
            display: flex;
            gap: 25px;
        }
        .nav-list a {
            color: var(--dark);
            font-weight: 600;
            padding: 8px 0;
            position: relative;
        }
        .nav-list a:hover {
            color: var(--primary);
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: var(--transition);
        }
        .nav-list a:hover::after {
            width: 100%;
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #f1f3ff;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--dark);
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
            color: white;
            padding: 80px 0;
            border-radius: 0 0 30px 30px;
            margin-bottom: 40px;
        }
        .hero h1 {
            font-size: 3.5rem;
            line-height: 1.2;
            margin-bottom: 1.5rem;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            opacity: 0.9;
        }
        main {
            background-color: white;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px;
            margin-bottom: 40px;
        }
        h1, h2, h3, h4 {
            color: var(--dark);
            line-height: 1.3;
            margin-top: 2rem;
            margin-bottom: 1rem;
        }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.2rem; color: var(--primary-dark); border-left: 5px solid var(--secondary); padding-left: 15px; }
        h3 { font-size: 1.8rem; color: var(--primary); }
        h4 { font-size: 1.4rem; color: var(--gray); }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            color: var(--dark);
            font-weight: 500;
        }
        .highlight {
            background-color: #f0f7ff;
            border-left: 4px solid var(--secondary);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .feature-img {
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin: 30px auto;
            border: 1px solid #eee;
        }
        blockquote {
            font-style: italic;
            color: var(--gray);
            border-left: 4px solid var(--primary);
            padding-left: 20px;
            margin: 30px 0;
        }
        ul, ol {
            padding-left: 30px;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.8rem;
        }
        strong {
            color: var(--primary-dark);
        }
        hr {
            border: none;
            height: 2px;
            background: linear-gradient(to right, transparent, var(--primary), transparent);
            margin: 40px 0;
        }
        .interactive-module {
            background-color: #f9f9ff;
            border-radius: var(--radius);
            padding: 30px;
            margin: 40px 0;
            border: 1px solid #e6e6ff;
        }
        .module-title {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--primary-dark);
            margin-bottom: 25px;
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin: 15px 0;
        }
        .rating-stars i {
            color: var(--warning);
            font-size: 1.5rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        form label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
        }
        form input, form textarea, form select {
            width: 100%;
            padding: 12px 15px;
            margin-bottom: 20px;
            border: 2px solid #ddd;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        form input:focus, form textarea:focus {
            border-color: var(--primary);
            outline: none;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        footer {
            background-color: var(--dark);
            color: #ccc;
            padding: 60px 0 30px;
        }
        footer a {
            color: #aaa;
        }
        footer a:hover {
            color: white;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-title {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary);
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        friend-link {
            display: inline-block;
            background-color: rgba(255,255,255,0.05);
            padding: 8px 16px;
            border-radius: 20px;
            margin: 5px;
            border: 1px solid rgba(255,255,255,0.1);
        }
        friend-link a {
            color: var(--secondary);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #888;
        }
        @media (max-width: 992px) {
            .hero h1 { font-size: 2.8rem; }
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            .form-row { grid-template-columns: 1fr; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-list {
                position: fixed;
                top: 100px;
                left: -100%;
                width: 80%;
                height: calc(100vh - 100px);
                background-color: white;
                flex-direction: column;
                align-items: center;
                padding-top: 40px;
                transition: var(--transition);
                box-shadow: var(--shadow);
                z-index: 999;
            }
            .nav-list.active {
                left: 0;
            }
            .header-top .container {
                flex-wrap: wrap;
            }
            .search-form {
                order: 3;
                margin-top: 20px;
                max-width: 100%;
            }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1.1rem; }
            main { padding: 25px; }
            .section-padding { padding: 40px 0; }
        }
        @media (max-width: 576px) {
            .hero { padding: 60px 0; }
            .hero h1 { font-size: 1.8rem; }
            h2 { font-size: 1.6rem; }
            h3 { font-size: 1.4rem; }
            .container { padding: 0 15px; }
        }
        .last-updated {
            font-size: 0.9rem;
            color: var(--gray);
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px dashed #ddd;
        }