* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
        }
        a {
            text-decoration: none;
            color: #2c3e50;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #e74c3c;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: #2c3e50;
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: #f1c40f;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            color: #fff;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            margin-left: 2rem;
        }
        .nav-links a {
            color: #ecf0f1;
            font-weight: 600;
            padding: 0.5rem 0.75rem;
            border-radius: 4px;
        }
        .nav-links a:hover {
            background-color: #34495e;
            color: #f1c40f;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background: #ecf0f1;
            padding: 0.8rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #7f8c8d;
        }
        .breadcrumb a:hover {
            color: #e74c3c;
        }
        .breadcrumb span {
            color: #2c3e50;
            font-weight: 600;
        }
        .search-container {
            margin: 2rem 0;
            text-align: center;
        }
        .search-box {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .search-box input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1rem;
            outline: none;
        }
        .search-box button {
            background: #e74c3c;
            color: white;
            border: none;
            padding: 0 1.8rem;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s;
        }
        .search-box button:hover {
            background: #c0392b;
        }
        main {
            padding: 2rem 0;
        }
        article {
            background: white;
            border-radius: 15px;
            padding: 3rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            margin-bottom: 2rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 6px solid #f1c40f;
            padding-left: 1rem;
        }
        h2 {
            font-size: 2.2rem;
            color: #34495e;
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ecf0f1;
        }
        h3 {
            font-size: 1.7rem;
            color: #2c3e50;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #7f8c8d;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 600;
            color: #2c3e50;
            line-height: 1.8;
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #fffacd;
            padding: 0.2rem 0.5rem;
            border-radius: 3px;
            font-weight: 600;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .img-container {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 800px;
        }
        .img-container img {
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            transition: transform 0.5s ease;
        }
        .img-container img:hover {
            transform: scale(1.02);
        }
        .caption {
            font-style: italic;
            color: #7f8c8d;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        ul, ol {
            margin: 1.5rem 0;
            padding-left: 2rem;
        }
        li {
            margin-bottom: 0.8rem;
        }
        blockquote {
            border-left: 5px solid #f1c40f;
            padding: 1.5rem 2rem;
            background: #f9f9f9;
            margin: 2rem 0;
            font-style: italic;
            border-radius: 0 8px 8px 0;
        }
        .quote-author {
            text-align: right;
            font-weight: bold;
            color: #2c3e50;
            margin-top: 0.5rem;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .stat-card {
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 10px;
            text-align: center;
            border-top: 4px solid #3498db;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            transition: transform 0.3s;
        }
        .stat-card:hover {
            transform: translateY(-5px);
        }
        .stat-card i {
            font-size: 2.5rem;
            color: #3498db;
            margin-bottom: 1rem;
        }
        .stat-card h4 {
            color: #2c3e50;
            margin-bottom: 0.5rem;
        }
        .stat-card p {
            font-size: 1rem;
            color: #7f8c8d;
            margin-bottom: 0;
        }
        .link-list {
            background: #e8f4fc;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .link-list h3 {
            margin-top: 0;
        }
        .link-list ul {
            list-style: none;
            padding-left: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .link-list li {
            background: white;
            padding: 0.8rem 1.2rem;
            border-radius: 50px;
            box-shadow: 0 3px 6px rgba(0,0,0,0.05);
            margin-bottom: 0;
        }
        .link-list a:hover {
            color: #2980b9;
        }
        .user-interaction {
            margin: 3rem 0;
            padding: 2rem;
            background: #f8f9fa;
            border-radius: 15px;
            border-left: 6px solid #2ecc71;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #2c3e50;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #3498db;
            outline: none;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            margin: 1rem 0;
            color: #f1c40f;
        }
        .rating-stars i {
            cursor: pointer;
            transition: color 0.3s;
        }
        .rating-stars i:hover {
            color: #f39c12;
        }
        .btn {
            display: inline-block;
            background: #2ecc71;
            color: white;
            padding: 0.9rem 2rem;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
        }
        .btn:hover {
            background: #27ae60;
            transform: translateY(-2px);
        }
        .sidebar {
            position: sticky;
            top: 120px;
            align-self: start;
        }
        .quick-links-box {
            background: #2c3e50;
            color: white;
            padding: 1.5rem;
            border-radius: 10px;
            margin-bottom: 2rem;
        }
        .quick-links-box h3 {
            color: #f1c40f;
            margin-top: 0;
            border-bottom: 1px solid #4a6572;
            padding-bottom: 0.5rem;
        }
        .quick-links-box ul {
            list-style: none;
            padding-left: 0;
        }
        .quick-links-box li {
            margin-bottom: 0.7rem;
        }
        .quick-links-box a {
            color: #ecf0f1;
            display: block;
            padding: 0.5rem;
            border-radius: 5px;
        }
        .quick-links-box a:hover {
            background: #34495e;
            color: #f1c40f;
        }
        .update-time {
            font-size: 0.9rem;
            color: #bdc3c7;
            text-align: center;
            margin-top: 1rem;
        }
        footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h4 {
            color: #f1c40f;
            margin-bottom: 1.2rem;
            font-size: 1.2rem;
        }
        friend-link {
            display: inline-block;
            background: #34495e;
            color: #ecf0f1;
            padding: 0.6rem 1rem;
            margin: 0.3rem;
            border-radius: 5px;
            transition: all 0.3s;
        }
        friend-link:hover {
            background: #f1c40f;
            color: #2c3e50;
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #4a6572;
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                order: -1;
                position: static;
                margin-bottom: 2rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: 70px;
                right: -100%;
                flex-direction: column;
                background: #2c3e50;
                width: 80%;
                height: calc(100vh - 70px);
                padding-top: 2rem;
                transition: right 0.5s ease;
                box-shadow: -5px 0 15px rgba(0,0,0,0.2);
            }
            .nav-links.active {
                right: 0;
            }
            .nav-links li {
                margin: 0;
                width: 100%;
                text-align: center;
            }
            .nav-links a {
                display: block;
                padding: 1.2rem;
                border-bottom: 1px solid #34495e;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            article {
                padding: 1.8rem;
            }
            .link-list ul {
                flex-direction: column;
                gap: 0.8rem;
            }
        }