:root {
            --primary: #2c3e50;
            --secondary: #e74c3c;
            --accent: #3498db;
            --light: #ecf0f1;
            --dark: #1a252f;
            --gray: #7f8c8d;
            --success: #27ae60;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --border-radius: 8px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background-color: #f9f9f9;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul { list-style: none; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .main-header {
            background-color: var(--primary);
            color: var(--light);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--light);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i { color: var(--secondary); }
        .my-logo:hover { color: var(--accent); }
        .main-nav ul {
            display: flex;
            gap: 2rem;
        }
        .nav-link {
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            font-weight: 600;
        }
        .nav-link:hover, .nav-link.active {
            background-color: var(--secondary);
            color: white;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--light);
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #f1f1f1;
            font-size: 0.9rem;
        }
        .breadcrumb .container {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .breadcrumb a:hover { color: var(--secondary); text-decoration: underline; }
        .hero {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            color: white;
            padding: 3rem 0;
            text-align: center;
            margin-bottom: 2rem;
        }
        .hero h1 {
            font-size: 2.8rem;
            margin-bottom: 1rem;
        }
        .search-box {
            max-width: 600px;
            margin: 2rem auto 0;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .search-box input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1rem;
        }
        .search-box button {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 0 2rem;
            cursor: pointer;
            font-weight: bold;
            transition: var(--transition);
        }
        .search-box button:hover { background-color: #c0392b; }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .content-wrapper { grid-template-columns: 1fr; }
        }
        .main-content { }
        article { background: white; padding: 2.5rem; border-radius: var(--border-radius); box-shadow: var(--shadow); }
        h1 { font-size: 2.5rem; color: var(--primary); margin-bottom: 1.5rem; }
        h2 { font-size: 2rem; color: var(--primary); margin: 2.5rem 0 1rem; padding-bottom: 0.5rem; border-bottom: 3px solid var(--secondary); }
        h3 { font-size: 1.6rem; color: var(--dark); margin: 2rem 0 1rem; }
        h4 { font-size: 1.3rem; color: var(--gray); margin: 1.5rem 0 0.8rem; }
        p { margin-bottom: 1.2rem; font-size: 1.05rem; }
        strong { color: var(--primary); }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        .highlight { background-color: #fffacd; padding: 0.2rem 0.5rem; border-radius: 4px; }
        .feature-img {
            margin: 2rem auto;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .feature-img figcaption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            padding: 0.5rem;
            font-size: 0.9rem;
        }
        .internal-link {
            color: var(--accent);
            font-weight: 600;
            border-bottom: 1px dotted var(--accent);
        }
        .internal-link:hover { color: var(--secondary); border-bottom-style: solid; }
        .update-time {
            text-align: right;
            font-size: 0.9rem;
            color: var(--gray);
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid #eee;
        }
        .sidebar-widget {
            background: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }
        .widget-title {
            font-size: 1.3rem;
            color: var(--primary);
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent);
        }
        .rating-widget form, .comment-widget form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .stars { display: flex; gap: 5px; direction: rtl; }
        .stars input { display: none; }
        .stars label { font-size: 1.8rem; color: #ddd; cursor: pointer; transition: var(--transition); }
        .stars label:hover, .stars label:hover ~ label, .stars input:checked ~ label { color: gold; }
        textarea, input[type="text"], input[type="email"] {
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            width: 100%;
        }
        .btn {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: bold;
            transition: var(--transition);
        }
        .btn:hover { background-color: #c0392b; transform: translateY(-2px); }
        .btn-block { width: 100%; }
        .comment-list { margin-top: 1.5rem; }
        .comment-item {
            padding: 1rem;
            border-bottom: 1px solid #eee;
        }
        .comment-item:last-child { border-bottom: none; }
        .comment-author { font-weight: bold; color: var(--primary); }
        .comment-date { font-size: 0.8rem; color: var(--gray); }
        .main-footer {
            background-color: var(--dark);
            color: var(--light);
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-logo { font-size: 2rem; font-weight: 800; margin-bottom: 1rem; color: var(--light); }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 1rem 0;
        }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            padding: 0.5rem 1rem;
            border-radius: 4px;
            font-size: 0.9rem;
        }
        friend-link a:hover { color: var(--accent); }
        .copyright {
            text-align: center;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--primary);
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: var(--transition);
                padding: 1rem;
                box-shadow: var(--shadow);
            }
            .main-nav.active {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .nav-link {
                display: block;
                padding: 1rem;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .hero h1 { font-size: 2rem; }
            article { padding: 1.5rem; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
        }