* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #2c3e50;
            --secondary: #3498db;
            --accent: #e74c3c;
            --light: #ecf0f1;
            --dark: #1a252f;
            --gray: #7f8c8d;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }
        body {
            background-color: #f9f9f9;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--primary);
            color: white;
            box-shadow: var(--shadow);
            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: 700;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--secondary);
        }
        .my-logo:hover {
            color: var(--light);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        nav {
            display: flex;
            gap: 25px;
        }
        nav a {
            color: var(--light);
            font-weight: 500;
            padding: 5px 0;
            position: relative;
        }
        nav a:hover {
            color: white;
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--secondary);
            transition: width 0.3s;
        }
        nav a:hover::after {
            width: 100%;
        }
        .breadcrumb {
            background-color: #34495e;
            padding: 10px 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #bdc3c7;
        }
        .breadcrumb span {
            color: #ecf0f1;
            margin: 0 5px;
        }
        main {
            padding: 40px 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .content {
            background: white;
            padding: 40px;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }
        .widget {
            background: white;
            padding: 25px;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--primary);
            font-size: 2.8rem;
            margin-bottom: 25px;
            line-height: 1.2;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 15px;
        }
        h2 {
            color: var(--dark);
            font-size: 2rem;
            margin: 35px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #eee;
        }
        h3 {
            color: var(--primary);
            font-size: 1.5rem;
            margin: 30px 0 15px;
        }
        h4 {
            color: var(--gray);
            font-size: 1.2rem;
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            color: var(--dark);
            font-weight: 500;
            background-color: #f1f8ff;
            padding: 20px;
            border-left: 4px solid var(--secondary);
            border-radius: 5px;
            margin-bottom: 30px;
        }
        .highlight {
            background-color: #fffde7;
            padding: 20px;
            border-radius: 8px;
            border-left: 5px solid #ffc107;
            margin: 25px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat-box {
            background: linear-gradient(135deg, var(--secondary), #2980b9);
            color: white;
            padding: 25px;
            border-radius: 10px;
            text-align: center;
            box-shadow: var(--shadow);
        }
        .stat-box h3 {
            color: white;
            font-size: 2.5rem;
            margin: 10px 0;
        }
        .feature-img {
            width: 100%;
            height: auto;
            border-radius: 10px;
            margin: 25px 0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
        }
        .interactive-form {
            background-color: #f8f9fa;
            padding: 30px;
            border-radius: 10px;
            margin: 40px 0;
            border: 1px solid #dee2e6;
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ced4da;
            border-radius: 6px;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus {
            outline: none;
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }
        button, .btn {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-block;
        }
        button:hover, .btn:hover {
            background-color: #2980b9;
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
        }
        .rating {
            display: flex;
            gap: 5px;
            margin: 15px 0;
        }
        .star {
            color: #ddd;
            font-size: 1.5rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        footer {
            background-color: var(--dark);
            color: #bdc3c7;
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 20px;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin: 15px 0;
        }
        .friend-link {
            background-color: #2c3e50;
            color: #ecf0f1;
            padding: 8px 15px;
            border-radius: 5px;
            transition: var(--transition);
        }
        .friend-link:hover {
            background-color: var(--secondary);
            color: white;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #34495e;
            font-size: 0.9rem;
            color: #95a5a6;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            .sidebar {
                order: -1;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: var(--primary);
                padding: 20px;
                box-shadow: var(--shadow);
            }
            nav.active {
                display: flex;
            }
            .header-top {
                padding: 15px 20px;
            }
            .content {
                padding: 25px;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }
            .content {
                padding: 20px;
            }
            h1 {
                font-size: 1.8rem;
            }
            .interactive-form {
                padding: 20px;
            }
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .keyword {
            background-color: #e3f2fd;
            padding: 2px 6px;
            border-radius: 3px;
            font-weight: 600;
        }
        .update-time {
            display: inline-block;
            background-color: #e8f5e9;
            color: #2e7d32;
            padding: 5px 10px;
            border-radius: 20px;
            font-size: 0.9rem;
            margin-bottom: 20px;
        }