:root {
            --primary: #4a2c8c;
            --secondary: #ff6b35;
            --accent: #00c9b7;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
            --border-radius: 12px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--dark);
            background-color: #fff;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary), #2d1b5e);
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
        }
        .my-logo i {
            color: var(--accent);
            margin-right: 10px;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            margin-left: 2rem;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--accent);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--accent);
            transition: width 0.3s ease;
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            cursor: pointer;
            font-size: 1.8rem;
            color: white;
        }
        .breadcrumb {
            background-color: #f1f3ff;
            padding: 1rem 0;
            font-size: 0.95rem;
            margin-bottom: 2rem;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-box {
            background: var(--light);
            padding: 3rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin: 2.5rem 0;
            text-align: center;
        }
        .search-box h2 {
            margin-bottom: 1.5rem;
            color: var(--primary);
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-form input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: 2px solid #ddd;
            border-radius: 50px 0 0 50px;
            font-size: 1.1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-form input:focus {
            border-color: var(--accent);
        }
        .search-form button {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 0 2rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: #e05a2b;
        }
        main {
            padding: 2rem 0;
        }
        article {
            background: white;
            border-radius: var(--border-radius);
            padding: 3rem;
            box-shadow: var(--shadow);
            margin-bottom: 2.5rem;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: var(--secondary);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #eee;
        }
        h3 {
            font-size: 1.6rem;
            color: var(--primary);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--dark);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            color: var(--gray);
            font-weight: 500;
            background: #f9f9ff;
            padding: 1.5rem;
            border-left: 5px solid var(--accent);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background: linear-gradient(120deg, #fffbcc 0%, #fffbcc 100%);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            border-left: 5px solid #ffc107;
        }
        .highlight p {
            margin-bottom: 0;
            font-weight: 600;
            color: #856404;
        }
        .img-container {
            margin: 2.5rem auto;
            text-align: center;
        }
        .feature-img {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
            transition: transform 0.5s ease;
        }
        .feature-img:hover {
            transform: scale(1.01);
        }
        .img-caption {
            font-style: italic;
            color: var(--gray);
            margin-top: 0.8rem;
            font-size: 0.95rem;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.7rem;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
            text-decoration: underline;
        }
        strong {
            color: var(--primary);
            font-weight: 700;
        }
        .quote {
            background: linear-gradient(to right, #eef5ff, #f0f8ff);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 2.5rem 0;
            border-left: 6px solid var(--accent);
            font-style: italic;
            font-size: 1.1rem;
            color: #333;
        }
        .quote-author {
            text-align: right;
            font-weight: 600;
            color: var(--secondary);
            margin-top: 1rem;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .stat-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            text-align: center;
            box-shadow: var(--shadow);
            border-top: 5px solid var(--accent);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-10px);
        }
        .stat-card h4 {
            color: var(--primary);
            font-size: 1.8rem;
            margin-bottom: 0.5rem;
        }
        .user-interaction {
            background: #f8f9ff;
            padding: 3rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
            border: 1px solid #e6e9ff;
        }
        .rating-form, .comment-form {
            margin-top: 2rem;
        }
        .star-rating {
            direction: rtl;
            display: inline-block;
            margin-bottom: 1.5rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            padding: 0 5px;
            transition: color 0.2s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #ffc107;
        }
        form label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }
        form input[type="text"],
        form input[type="email"],
        form textarea {
            width: 100%;
            padding: 1rem;
            margin-bottom: 1.5rem;
            border: 1px solid #ccc;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        form input[type="text"]:focus,
        form input[type="email"]:focus,
        form textarea:focus {
            border-color: var(--accent);
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 201, 183, 0.2);
        }
        form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: 50px;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            transition: var(--transition);
        }
        form button:hover {
            background: var(--secondary);
        }
        .update-time {
            background: #e7f7f6;
            padding: 1rem;
            border-radius: var(--border-radius);
            margin-top: 2rem;
            text-align: center;
            font-weight: 600;
            color: var(--primary);
        }
        footer {
            background: var(--dark);
            color: #ddd;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2.5rem;
        }
        .footer-section h3 {
            color: white;
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 0.5rem;
            display: inline-block;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
        }
        friend-link a {
            color: #aaa;
            text-decoration: none;
            transition: var(--transition);
        }
        friend-link a:hover {
            color: var(--accent);
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .nav-links {
                position: fixed;
                top: 80px;
                right: -100%;
                flex-direction: column;
                background: var(--primary);
                width: 100%;
                text-align: center;
                transition: 0.5s;
                box-shadow: var(--shadow);
                padding: 2rem 0;
                border-radius: 0 0 var(--border-radius) var(--border-radius);
                z-index: 999;
            }
            .nav-links.active {
                right: 0;
            }
            .nav-links li {
                margin: 1.5rem 0;
            }
            .hamburger {
                display: block;
            }
        }
        @media (max-width: 768px) {
            article {
                padding: 2rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input {
                border-radius: 50px;
                margin-bottom: 1rem;
            }
            .search-form button {
                border-radius: 50px;
                padding: 1rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }