* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #4a00e0;
            --secondary: #8e2de2;
            --accent: #00c6ff;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --success: #28a745;
            --warning: #ffc107;
            --danger: #dc3545;
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            color: var(--dark);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: white;
            padding: 1.2rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: 1px;
            background: linear-gradient(to right, #fff, var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }
        .my-logo:hover {
            transform: scale(1.03);
            text-decoration: none;
        }
        .breadcrumb {
            background: rgba(255,255,255,0.1);
            padding: 0.8rem 20px;
            font-size: 0.9rem;
            margin-top: 5px;
        }
        .breadcrumb a {
            color: #ddd;
        }
        .breadcrumb a:hover {
            color: white;
        }
        .breadcrumb span {
            color: #aaa;
            margin: 0 8px;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        nav a {
            color: white;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 0.5rem 0;
            position: relative;
        }
        nav a:hover {
            text-decoration: none;
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--accent);
            transition: width 0.3s;
        }
        nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        main {
            background: white;
            margin: 2rem auto;
            border-radius: 15px;
            box-shadow: var(--shadow);
            overflow: hidden;
            padding: 2.5rem;
        }
        article {
            max-width: 900px;
            margin: 0 auto;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-align: center;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 1rem;
        }
        h2 {
            font-size: 2.2rem;
            color: var(--secondary);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #eee;
        }
        h3 {
            font-size: 1.7rem;
            color: var(--dark);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--gray);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: var(--dark);
            background: #f0f4ff;
            padding: 1.5rem;
            border-radius: 10px;
            border-left: 5px solid var(--accent);
            margin-bottom: 2.5rem;
        }
        .highlight {
            background: linear-gradient(120deg, #fffd88 0%, #fffd88 100%);
            padding: 0.2rem 0.5rem;
            border-radius: 3px;
            font-weight: 600;
        }
        b, strong {
            color: var(--primary);
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .feature-img {
            width: 100%;
            border-radius: 12px;
            margin: 2rem auto;
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
            border: 5px solid white;
        }
        .caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .content-block {
            margin: 2.5rem 0;
            padding: 1.5rem;
            background: #f9f9f9;
            border-radius: 10px;
            border-left: 4px solid var(--primary);
        }
        .tip {
            background: #e8f7ef;
            border-left-color: var(--success);
        }
        .warning {
            background: #fff8e6;
            border-left-color: var(--warning);
        }
        .link-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .link-card {
            background: white;
            border: 1px solid #ddd;
            border-radius: 8px;
            padding: 1.2rem;
            text-align: center;
            transition: var(--transition);
        }
        .link-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
            border-color: var(--primary);
        }
        .module {
            background: #f1f5ff;
            border-radius: 12px;
            padding: 2rem;
            margin: 3rem 0;
            box-shadow: var(--shadow);
        }
        .module-title {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 1.5rem;
            color: var(--primary);
        }
        .module-title i {
            font-size: 1.8rem;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
            max-width: 600px;
        }
        input, textarea, select {
            padding: 0.9rem 1.2rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(74, 0, 224, 0.1);
        }
        textarea {
            min-height: 120px;
            resize: vertical;
        }
        button, .btn {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: white;
            border: none;
            padding: 0.9rem 1.8rem;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }
        button:hover, .btn:hover {
            background: linear-gradient(90deg, var(--secondary), var(--primary));
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(142, 45, 226, 0.3);
            text-decoration: none;
            color: white;
        }
        .rating {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--warning);
        }
        footer {
            background: var(--dark);
            color: #ccc;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-section h4 {
            color: white;
            margin-bottom: 1.2rem;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #aaa;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            padding: 0.5rem 1rem;
            border-radius: 20px;
            margin: 0.3rem;
            font-size: 0.9rem;
        }
        friend-link a {
            color: var(--accent);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #888;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            main { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--primary);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem 0;
                box-shadow: var(--shadow);
            }
            nav ul.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            main { padding: 1.5rem; margin: 1rem auto; }
            .lead { font-size: 1.15rem; }
            .link-list {
                grid-template-columns: 1fr;
            }
            .footer-content {
                grid-template-columns: 1fr;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .container { padding: 0 15px; }
            h1 { font-size: 1.8rem; }
            .module { padding: 1.5rem; }
            button, .btn { width: 100%; }
        }