:root {
            --primary: #2a4365;
            --secondary: #c53030;
            --accent: #d69e2e;
            --light: #f7fafc;
            --dark: #1a202c;
            --gray: #718096;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --transition: all 0.3s ease;
            --border-radius: 8px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f0f4f8;
            color: var(--dark);
            line-height: 1.6;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary) 0%, #1a365d 100%);
            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: 2.2rem;
            font-weight: 800;
            background: linear-gradient(to right, #fbd38d, #fc8181);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .search-form {
            display: flex;
            flex-grow: 0.4;
            max-width: 400px;
        }
        .search-form input {
            flex-grow: 1;
            padding: 12px 15px;
            border: none;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--accent);
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #b7791f;
        }
        nav {
            background-color: rgba(255, 255, 255, 0.05);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .main-nav {
            display: flex;
            list-style: none;
        }
        .main-nav li {
            position: relative;
        }
        .main-nav a {
            color: white;
            padding: 18px 20px;
            display: block;
            font-weight: 500;
        }
        .main-nav a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: #fbd38d;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 10px;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            margin: 0 8px;
            color: #a0aec0;
        }
        main {
            flex: 1;
            padding: 30px 0;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 30px;
        }
        article {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--shadow);
            margin-bottom: 30px;
        }
        article h1 {
            color: var(--primary);
            font-size: 2.8rem;
            margin-bottom: 20px;
            line-height: 1.2;
            border-bottom: 3px solid var(--accent);
            padding-bottom: 15px;
        }
        article h2 {
            color: var(--primary);
            font-size: 2rem;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #e2e8f0;
        }
        article h3 {
            color: var(--secondary);
            font-size: 1.6rem;
            margin: 30px 0 15px;
        }
        article h4 {
            color: var(--dark);
            font-size: 1.3rem;
            margin: 25px 0 10px;
        }
        article p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fffaf0;
            border-left: 4px solid var(--accent);
            padding: 20px;
            margin: 25px 0;
            font-style: italic;
        }
        .featured-img {
            width: 100%;
            border-radius: var(--border-radius);
            margin: 30px auto;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }
        .related-links {
            background-color: #edf2f7;
            border-radius: var(--border-radius);
            padding: 20px;
            margin: 30px 0;
        }
        .related-links h3 {
            margin-top: 0;
        }
        .related-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 10px;
            list-style: none;
        }
        .related-links li {
            padding: 8px 0;
            border-bottom: 1px dashed #cbd5e0;
        }
        .related-links li:last-child {
            border-bottom: none;
        }
        .related-links a {
            color: var(--dark);
            display: flex;
            align-items: center;
        }
        .related-links a:hover {
            color: var(--secondary);
            padding-left: 5px;
        }
        .related-links i {
            margin-right: 10px;
            color: var(--accent);
        }
        .info-box {
            background: linear-gradient(to right, #ebf8ff, #fed7d7);
            padding: 25px;
            border-radius: var(--border-radius);
            margin: 30px 0;
            border: 1px solid #fed7d7;
        }
        .update-time {
            text-align: right;
            font-size: 0.9rem;
            color: var(--gray);
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid #e2e8f0;
        }
        aside {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 25px;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 140px;
        }
        aside h3 {
            color: var(--primary);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #e2e8f0;
        }
        .user-functions {
            margin-bottom: 30px;
        }
        .user-functions form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .user-functions input,
        .user-functions textarea,
        .user-functions select {
            padding: 12px;
            border: 1px solid #cbd5e0;
            border-radius: var(--border-radius);
            font-size: 1rem;
            width: 100%;
        }
        .user-functions textarea {
            min-height: 100px;
            resize: vertical;
        }
        .user-functions button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 12px;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .user-functions button:hover {
            background-color: #1a365d;
        }
        .rating {
            display: flex;
            justify-content: space-around;
            margin: 15px 0;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 1.8rem;
            color: #cbd5e0;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating label:hover,
        .rating label:hover ~ label {
            color: #fbd38d;
        }
        .rating input:checked ~ label {
            color: var(--accent);
        }
        .quick-nav ul {
            list-style: none;
        }
        .quick-nav li {
            margin-bottom: 10px;
        }
        .quick-nav a {
            display: block;
            padding: 12px 15px;
            background-color: #f7fafc;
            border-radius: var(--border-radius);
            border-left: 4px solid var(--primary);
        }
        .quick-nav a:hover {
            background-color: #edf2f7;
            border-left-color: var(--secondary);
            transform: translateX(5px);
        }
        footer {
            background-color: var(--dark);
            color: #cbd5e0;
            padding: 40px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-section h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #a0aec0;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: inline-block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 10px 15px;
            border-radius: 6px;
            margin: 5px;
            border: 1px solid #4a5568;
        }
        friend-link a {
            color: #fbd38d;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #4a5568;
            font-size: 0.9rem;
            color: #a0aec0;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                gap: 20px;
            }
            .search-form {
                max-width: 100%;
                width: 100%;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                position: absolute;
                top: 100%;
                left: 0;
                background-color: var(--primary);
                box-shadow: var(--shadow);
            }
            .main-nav.active {
                display: flex;
            }
            .main-nav li {
                width: 100%;
                text-align: center;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }
            .hamburger {
                display: block;
            }
            .nav-container {
                justify-content: space-between;
                width: 100%;
            }
            article {
                padding: 25px;
            }
            article h1 {
                font-size: 2.2rem;
            }
            article h2 {
                font-size: 1.8rem;
            }
        }