* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: #222;
            background-color: #f8f9fa;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 15px;
        }
        h1 { font-size: 2.8rem; color: #c00; margin-bottom: 1.5rem; border-bottom: 3px solid #ddd; padding-bottom: 0.5rem; }
        h2 { font-size: 2rem; color: #333; margin: 2rem 0 1rem; border-left: 5px solid #c00; padding-left: 15px; }
        h3 { font-size: 1.5rem; color: #555; margin: 1.5rem 0 0.75rem; }
        h4 { font-size: 1.2rem; color: #777; margin: 1rem 0 0.5rem; }
        p, li { margin-bottom: 1rem; color: #444; }
        a { color: #0066cc; text-decoration: none; transition: color 0.2s; }
        a:hover { color: #c00; text-decoration: underline; }
        strong { color: #000; }
        .container { display: grid; grid-template-columns: 1fr 300px; gap: 30px; }
        @media (max-width: 768px) {
            .container { grid-template-columns: 1fr; }
        }
        main { order: 1; }
        aside { order: 2; }
        header {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
            color: white;
            padding: 1.5rem 0;
            margin-bottom: 2rem;
            border-radius: 0 0 10px 10px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 900;
            color: #ffcc00;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo a:hover { color: #fff; }
        .logo i { color: #c00; }
        .search-box {
            display: flex;
            background: white;
            border-radius: 30px;
            overflow: hidden;
            min-width: 250px;
            flex-grow: 0.3;
        }
        .search-box input {
            flex-grow: 1;
            border: none;
            padding: 12px 20px;
            font-size: 1rem;
        }
        .search-box button {
            background: #c00;
            color: white;
            border: none;
            padding: 0 25px;
            cursor: pointer;
            font-size: 1.1rem;
        }
        .search-box button:hover { background: #a00; }
        nav {
            margin-top: 1.5rem;
            background: rgba(255,255,255,0.05);
            border-radius: 8px;
            padding: 0.5rem;
        }
        .nav-desktop { display: flex; flex-wrap: wrap; list-style: none; }
        .nav-desktop li { margin-right: 5px; }
        .nav-desktop a {
            display: block;
            padding: 12px 18px;
            color: #ddd;
            border-radius: 5px;
            font-weight: 500;
            min-height: 44px;
            min-width: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .nav-desktop a:hover, .nav-desktop a.active {
            background: #c00;
            color: white;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 10px;
            min-height: 44px;
            min-width: 44px;
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; flex-direction: column; width: 100%; }
            .nav-desktop.active { display: flex; }
            .hamburger { display: block; }
            .search-box { order: 3; width: 100%; margin-top: 15px; }
            .header-top { flex-direction: column; align-items: flex-start; }
            .logo { margin-bottom: 15px; }
        }
        .card, section, article {
            background: white;
            border-radius: 10px;
            padding: 25px;
            margin-bottom: 25px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
            border: 1px solid #eaeaea;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            border: 1px solid #ddd;
            display: block;
            margin: 1.5rem auto;
        }
        figcaption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: -10px;
            margin-bottom: 1.5rem;
        }
        ul, ol { padding-left: 2rem; margin-bottom: 1.5rem; }
        li { margin-bottom: 0.5rem; }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }
        th, td {
            border: 1px solid #ddd;
            padding: 12px 15px;
            text-align: left;
        }
        th { background-color: #f2f2f2; font-weight: bold; color: #333; }
        tr:nth-child(even) { background-color: #f9f9f9; }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: #c00;
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            text-decoration: none;
            min-height: 44px;
            min-width: 44px;
            margin: 5px;
        }
        .btn:hover {
            background: #a00;
            color: white;
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(192,0,0,0.2);
        }
        .btn-secondary {
            background: #0066cc;
        }
        .btn-secondary:hover { background: #0052a3; }
        .rating { color: #ffcc00; font-size: 1.2rem; margin: 10px 0; }
        .share-buttons { display: flex; gap: 10px; flex-wrap: wrap; margin: 20px 0; }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #333;
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            cursor: pointer;
            opacity: 0.8;
            z-index: 1000;
            display: none;
        }
        .back-to-top:hover { opacity: 1; background: #c00; }
        form { margin: 20px 0; }
        .form-group { margin-bottom: 20px; }
        label { display: block; margin-bottom: 8px; font-weight: 600; }
        input, textarea, select {
            width: 100%;
            padding: 14px;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
            font-family: inherit;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #0066cc;
            box-shadow: 0 0 0 3px rgba(0,102,204,0.1);
        }
        aside .card { padding: 20px; }
        .toc ul { list-style: none; padding-left: 1rem; }
        .toc a { display: block; padding: 8px 0; border-bottom: 1px dashed #eee; }
        .update-log li { margin-bottom: 15px; padding-bottom: 15px; border-bottom: 1px solid #eee; }
        footer {
            background: #1a1a2e;
            color: #bbb;
            padding: 3rem 0 2rem;
            margin-top: 3rem;
            border-radius: 10px 10px 0 0;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 2rem;
        }
        .footer-section h4 { color: #ffcc00; margin-bottom: 1.2rem; border-bottom: 1px solid #333; padding-bottom: 8px; }
        .friend-links { display: flex; flex-wrap: wrap; gap: 15px; }
        .friend-links a { color: #ddd; }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #333;
            color: #888;
            font-size: 0.9rem;
        }
        .text-center { text-align: center; }
        .mt-3 { margin-top: 1.5rem; }
        .mb-3 { margin-bottom: 1.5rem; }
        .highlight { background-color: #fffacd; padding: 2px 5px; border-radius: 3px; }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }