* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #f0f7ff;
            color: #333;
            line-height: 1.6;
            overflow-x: hidden;
        }
        a {
            color: #ff4655;
            text-decoration: none;
            transition: color 0.3s;
        }
        a:hover {
            color: #00c9ff;
        }
        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, #6a11cb 0%, #2575fc 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: 900;
            letter-spacing: 1px;
            color: #ffeb3b;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo:hover {
            color: #fff;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            margin-left: 1.8rem;
        }
        .nav-links a {
            color: white;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0.8rem;
            border-radius: 5px;
        }
        .nav-links a:hover {
            background-color: rgba(255,255,255,0.2);
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #666;
        }
        .breadcrumb a {
            color: #6a11cb;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .search-container {
            background: #fff;
            border-radius: 50px;
            padding: 2rem;
            margin: 2rem auto;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            max-width: 800px;
        }
        .search-container form {
            display: flex;
        }
        .search-container input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: 2px solid #6a11cb;
            border-radius: 50px 0 0 50px;
            font-size: 1.1rem;
            outline: none;
        }
        .search-container button {
            background: linear-gradient(to right, #6a11cb, #2575fc);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            transition: opacity 0.3s;
        }
        .search-container button:hover {
            opacity: 0.9;
        }
        main {
            padding: 2rem 0;
        }
        article {
            background: white;
            border-radius: 15px;
            padding: 3rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            margin-bottom: 3rem;
        }
        h1 {
            font-size: 3rem;
            color: #2575fc;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2.2rem;
            color: #6a11cb;
            margin: 2.5rem 0 1rem;
            border-bottom: 3px solid #ffeb3b;
            padding-bottom: 0.5rem;
        }
        h3 {
            font-size: 1.8rem;
            color: #ff4655;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #00c9ff;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.3rem;
            color: #555;
            background: #f9f9ff;
            padding: 1.5rem;
            border-left: 5px solid #2575fc;
            border-radius: 0 10px 10px 0;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fffacd;
            padding: 0.3rem 0.6rem;
            border-radius: 4px;
            font-weight: 700;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .feature-img {
            border-radius: 12px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            margin: 2.5rem auto;
            border: 5px solid #6a11cb;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #777;
            margin-top: 0.5rem;
            margin-bottom: 2rem;
        }
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .platform-card {
            background: linear-gradient(145deg, #ffffff, #e6f0ff);
            border-radius: 12px;
            padding: 2rem;
            text-align: center;
            box-shadow: 0 6px 12px rgba(0,0,0,0.08);
            transition: transform 0.3s, box-shadow 0.3s;
            border-top: 6px solid #ff4655;
        }
        .platform-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 25px rgba(0,0,0,0.15);
        }
        .platform-card i {
            font-size: 3rem;
            color: #6a11cb;
            margin-bottom: 1rem;
        }
        .tip-box {
            background: #e1f5fe;
            border-left: 6px solid #00c9ff;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .tip-box h4 {
            color: #0077c2;
            margin-top: 0;
        }
        .interaction-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 4rem 0;
        }
        .comment-box, .rating-box {
            background: #f9f9ff;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .comment-box h3, .rating-box h3 {
            color: #6a11cb;
        }
        textarea, select, input[type="text"], input[type="email"] {
            width: 100%;
            padding: 1rem;
            margin: 1rem 0;
            border: 2px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        textarea:focus, select:focus, input:focus {
            border-color: #6a11cb;
            outline: none;
        }
        .submit-btn {
            background: linear-gradient(to right, #6a11cb, #2575fc);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 50px;
            cursor: pointer;
            font-weight: 700;
            font-size: 1.1rem;
            transition: opacity 0.3s;
            display: block;
            width: 100%;
        }
        .submit-btn:hover {
            opacity: 0.9;
        }
        .stars {
            display: flex;
            justify-content: center;
            margin: 1.5rem 0;
        }
        .stars i {
            font-size: 2.5rem;
            color: #ddd;
            cursor: pointer;
            margin: 0 0.3rem;
            transition: color 0.2s;
        }
        .stars i:hover,
        .stars i.active {
            color: #ffeb3b;
        }
        footer {
            background: linear-gradient(135deg, #1a237e, #311b92);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-section h4 {
            color: #ffeb3b;
            font-size: 1.4rem;
            margin-bottom: 1.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #b3e5fc;
        }
        .footer-links a:hover {
            color: #fff;
        }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            padding: 0.8rem 1.5rem;
            border-radius: 6px;
            margin: 0.5rem;
            color: #ffcc80;
            border: 1px solid #ffcc80;
        }
        friend-link:hover {
            background: rgba(255,255,255,0.2);
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.2);
            color: #b3e5fc;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #6a11cb;
                flex-direction: column;
                padding: 1rem 0;
                box-shadow: 0 10px 15px rgba(0,0,0,0.2);
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links li {
                margin: 0;
                text-align: center;
            }
            .nav-links a {
                display: block;
                padding: 1rem;
            }
            .hamburger {
                display: block;
            }
            article {
                padding: 2rem;
            }
        }
        @media (max-width: 576px) {
            .container { padding: 0 15px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            .search-container form {
                flex-direction: column;
            }
            .search-container input {
                border-radius: 50px;
                margin-bottom: 1rem;
            }
            .search-container button {
                border-radius: 50px;
            }
            .platform-grid {
                grid-template-columns: 1fr;
            }
            .interaction-section {
                grid-template-columns: 1fr;
            }
        }