:root {
            --wiki-blue: #3366cc;
            --wiki-light-blue: #eaf3ff;
            --wiki-dark: #202122;
            --wiki-gray: #54595d;
            --wiki-light-gray: #f8f9fa;
            --wiki-border: #a2a9b1;
            --accent-orange: #ff6b00;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            color: var(--wiki-dark);
            background-color: #fff;
            line-height: 1.6;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        a {
            color: var(--wiki-blue);
            text-decoration: none;
        }
        a:hover {
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .site-header {
            border-bottom: 1px solid var(--wiki-border);
            padding: 15px 0;
            margin-bottom: 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: bold;
            color: var(--wiki-blue);
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
        }
        .my-logo span {
            color: var(--accent-orange);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 20px;
            flex-wrap: wrap;
        }
        .main-nav a {
            padding: 10px 15px;
            font-weight: 500;
            border-radius: 4px;
            transition: background 0.2s;
        }
        .main-nav a:hover {
            background-color: var(--wiki-light-blue);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: var(--wiki-gray);
            cursor: pointer;
            padding: 10px;
            min-width: 44px;
            min-height: 44px;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 30px;
        }
        @media (max-width: 768px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: var(--wiki-light-gray);
            padding: 25px;
            border-radius: 8px;
            border: 1px solid var(--wiki-border);
        }
        h1 {
            font-size: 2.2rem;
            color: var(--wiki-dark);
            border-bottom: 2px solid var(--wiki-border);
            padding-bottom: 10px;
            margin-bottom: 25px;
        }
        h2 {
            font-size: 1.8rem;
            color: var(--wiki-gray);
            margin-top: 35px;
            margin-bottom: 15px;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--wiki-border);
        }
        h3 {
            font-size: 1.4rem;
            margin-top: 25px;
            margin-bottom: 10px;
            color: var(--wiki-dark);
        }
        h4 {
            font-size: 1.1rem;
            margin-top: 20px;
            margin-bottom: 8px;
        }
        p {
            margin-bottom: 16px;
            line-height: 1.7;
        }
        .lead {
            font-size: 1.1rem;
            background-color: #f0f7ff;
            padding: 15px;
            border-left: 4px solid var(--wiki-blue);
            border-radius: 4px;
            margin-bottom: 25px;
        }
        .info-box {
            background: #f8f9fa;
            border: 1px solid #a2a9b1;
            padding: 20px;
            margin: 20px 0;
            float: right;
            width: 300px;
            margin-left: 25px;
            border-radius: 5px;
        }
        .info-box h3 {
            margin-top: 0;
            border-bottom: 1px solid #a2a9b1;
            padding-bottom: 8px;
        }
        @media (max-width: 1024px) {
            .info-box {
                float: none;
                width: 100%;
                margin-left: 0;
            }
        }
        .table-container {
            overflow-x: auto;
            margin: 20px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
        }
        th, td {
            border: 1px solid var(--wiki-border);
            padding: 12px 15px;
            text-align: left;
        }
        th {
            background-color: var(--wiki-light-blue);
            font-weight: 600;
        }
        tr:nth-child(even) {
            background-color: #f9f9f9;
        }
        ul, ol {
            padding-left: 30px;
            margin-bottom: 20px;
        }
        li {
            margin-bottom: 8px;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--wiki-gray);
            font-size: 0.9rem;
            margin-top: 8px;
            margin-bottom: 25px;
        }
        .highlight {
            background-color: #fff3cd;
            padding: 15px;
            border-left: 4px solid var(--accent-orange);
            border-radius: 4px;
            margin: 20px 0;
        }
        .btn {
            display: inline-block;
            background-color: var(--wiki-blue);
            color: white;
            padding: 12px 24px;
            border-radius: 6px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.3s;
            text-align: center;
            min-height: 44px;
            min-width: 44px;
        }
        .btn:hover {
            background-color: #2a4b8c;
            text-decoration: none;
            color: white;
        }
        .btn-secondary {
            background-color: var(--wiki-gray);
        }
        .btn-secondary:hover {
            background-color: #3a3a3a;
        }
        aside {
            background: #f8f9fa;
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--wiki-border);
        }
        aside h3 {
            font-size: 1.3rem;
            margin-top: 0;
            border-bottom: 1px solid var(--wiki-border);
            padding-bottom: 10px;
            margin-bottom: 20px;
        }
        .sidebar-widget {
            margin-bottom: 30px;
        }
        .share-buttons {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .share-btn {
            flex: 1;
            min-width: 44px;
            min-height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 4px;
            color: white;
            font-size: 1.2rem;
        }
        .facebook { background: #3b5998; }
        .twitter { background: #1da1f2; }
        .reddit { background: #ff4500; }
        .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 var(--wiki-border);
            border-radius: 4px;
            font-size: 1rem;
        }
        textarea {
            min-height: 120px;
            resize: vertical;
        }
        .rating {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: #ffc107;
            margin: 10px 0;
        }
        .rating i {
            cursor: pointer;
            transition: transform 0.2s;
            min-width: 44px;
            min-height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .rating i:hover {
            transform: scale(1.2);
        }
        footer {
            margin-top: 50px;
            padding-top: 30px;
            border-top: 2px solid var(--wiki-border);
            color: var(--wiki-gray);
            font-size: 0.9rem;
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .friend-links {
            background: #f1f1f1;
            padding: 15px;
            border-radius: 5px;
            margin: 20px 0;
        }
        .friend-links ul {
            list-style: none;
            padding-left: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }
        .friend-links li {
            margin-bottom: 0;
        }
        .copyright {
            text-align: center;
            padding: 20px 0;
            background-color: var(--wiki-light-gray);
            border-radius: 5px;
            margin-top: 20px;
        }
        #backToTop {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--wiki-blue);
            color: white;
            border: none;
            border-radius: 50%;
            width: 50px;
            height: 50px;
            font-size: 1.2rem;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s, visibility 0.3s;
            z-index: 100;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        #backToTop.show {
            opacity: 1;
            visibility: visible;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease-out;
            }
            .main-nav.active {
                max-height: 400px;
                margin-top: 15px;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 5px;
            }
            .main-nav a {
                display: block;
                padding: 15px;
                border: 1px solid #eee;
            }
            .site-header {
                flex-direction: column;
                align-items: flex-start;
            }
            .logo-wrapper {
                width: 100%;
                display: flex;
                justify-content: space-between;
                align-items: center;
            }
        }
        .text-center { text-align: center; }
        .mb-20 { margin-bottom: 20px; }
        .mt-30 { margin-top: 30px; }
        .clearfix::after {
            content: "";
            clear: both;
            display: table;
        }