* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #0d3b2a;
            --secondary-color: #c19a6b;
            --accent-color: #d32f2f;
            --text-color: #333;
            --light-color: #f8f9fa;
            --dark-color: #1a1a1a;
            --shadow: 0 4px 6px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--text-color);
            background-color: #f5f5f5;
            max-width: 100vw;
            overflow-x: hidden;
        }
        header {
            background: linear-gradient(135deg, var(--primary-color), #1a5c40);
            color: white;
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 1px;
        }
        .my-logo span {
            color: var(--secondary-color);
            font-style: italic;
        }
        .my-logo:hover {
            transform: scale(1.05);
            transition: var(--transition);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
            padding: 5px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: white;
            border-radius: 2px;
            transition: var(--transition);
        }
        .main-nav {
            display: flex;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a:hover {
            background-color: rgba(255,255,255,0.15);
            transform: translateY(-2px);
        }
        .search-box {
            display: flex;
            margin-left: 1rem;
        }
        .search-box input {
            padding: 0.6rem 1rem;
            border: none;
            border-radius: 4px 0 0 4px;
            width: 250px;
        }
        .search-box button {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 0.6rem 1.2rem;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background-color: #b3895c;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 1rem 2rem;
            font-size: 0.9rem;
            border-bottom: 1px solid #ddd;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            max-width: 1400px;
            margin: 0 auto;
            gap: 10px;
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            max-width: 1400px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
        }
        article {
            background-color: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            line-height: 1.3;
            border-bottom: 3px solid var(--secondary-color);
            padding-bottom: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-color);
            margin: 2.5rem 0 1.2rem;
            padding-top: 1rem;
            border-top: 1px solid #eee;
        }
        h3 {
            font-size: 1.5rem;
            color: #2c3e50;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.2rem;
            color: #34495e;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: #2c3e50;
            background-color: #f8f9fa;
            padding: 1.5rem;
            border-left: 4px solid var(--secondary-color);
            border-radius: 0 8px 8px 0;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fff3cd;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 5px solid #ffc107;
            margin: 2rem 0;
        }
        .key-point {
            background-color: #e8f4fd;
            padding: 1rem 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
            border-left: 5px solid #2196f3;
        }
        .warning {
            background-color: #fde8e8;
            padding: 1rem 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
            border-left: 5px solid var(--accent-color);
        }
        blockquote {
            font-style: italic;
            color: #555;
            border-left: 4px solid var(--secondary-color);
            padding-left: 1.5rem;
            margin: 2rem 0;
            background-color: #f9f9f9;
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        .interactive-section {
            background: linear-gradient(to right, #f8f9fa, #e9ecef);
            padding: 2rem;
            border-radius: 10px;
            margin: 3rem 0;
            box-shadow: var(--shadow);
        }
        .interactive-section h3 {
            margin-top: 0;
        }
        .rating-system {
            display: flex;
            gap: 1rem;
            margin: 1.5rem 0;
            align-items: center;
        }
        .stars {
            display: flex;
            gap: 5px;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        button, .btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        button:hover, .btn:hover {
            background-color: #1a5c40;
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
        }
        article img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            display: block;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: -1.5rem;
            margin-bottom: 2rem;
            font-size: 0.95rem;
        }
        aside {
            background-color: white;
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: var(--shadow);
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        .toc {
            margin-bottom: 2rem;
        }
        .toc h3 {
            color: var(--primary-color);
            margin-top: 0;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--secondary-color);
        }
        .toc ul {
            list-style: none;
            padding-left: 1rem;
        }
        .toc li {
            margin-bottom: 0.8rem;
        }
        .toc a {
            color: var(--text-color);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0.5rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .toc a:hover {
            background-color: #f0f0f0;
            color: var(--primary-color);
            padding-left: 1.2rem;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            border-radius: 8px;
            overflow: hidden;
        }
        th, td {
            padding: 1rem;
            text-align: left;
            border-bottom: 1px solid #ddd;
        }
        th {
            background-color: var(--primary-color);
            color: white;
            font-weight: 600;
        }
        tr:nth-child(even) {
            background-color: #f9f9f9;
        }
        tr:hover {
            background-color: #f1f1f1;
        }
        form {
            background-color: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
            margin: 2rem 0;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--primary-color);
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(13, 59, 42, 0.1);
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 3rem 2rem;
            margin-top: 4rem;
        }
        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h3 {
            color: var(--secondary-color);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255,255,255,0.05);
            padding: 1rem;
            border-radius: 6px;
            margin: 0.5rem 0;
            border-left: 3px solid var(--secondary-color);
        }
        friend-link a {
            color: var(--secondary-color);
            text-decoration: none;
            font-weight: 600;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        .update-time {
            background-color: #e9ecef;
            padding: 1rem;
            border-radius: 6px;
            margin: 2rem 0;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-style: italic;
        }
        @media (max-width: 1024px) {
            main {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .hamburger {
                display: flex;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 1rem;
                gap: 0;
            }
            .main-nav.active {
                display: flex;
            }
            .main-nav a {
                padding: 1rem;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .search-box {
                width: 100%;
                margin: 1rem 0 0;
            }
            .search-box input {
                width: 100%;
            }
            main {
                padding: 0 1rem;
            }
            article {
                padding: 1.5rem;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .lead {
                font-size: 1.1rem;
                padding: 1rem;
            }
        }
        @media (max-width: 480px) {
            .header-container {
                padding: 1rem;
            }
            .my-logo {
                font-size: 1.8rem;
            }
            .breadcrumb {
                padding: 1rem;
            }
            article {
                padding: 1rem;
            }
            .interactive-section {
                padding: 1.5rem;
            }
            .rating-system {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-container {
                grid-template-columns: 1fr;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        article {
            animation: fadeIn 0.8s ease-out;
        }
        .text-center { text-align: center; }
        .text-bold { font-weight: bold; }
        .text-secondary { color: var(--secondary-color); }
        .text-primary { color: var(--primary-color); }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .flex { display: flex; }
        .flex-col { flex-direction: column; }
        .items-center { align-items: center; }
        .justify-between { justify-content: space-between; }
        .gap-1 { gap: 1rem; }
        .gap-2 { gap: 2rem; }