* { 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: #f8f9fa;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 15px;
        }
        header {
            background: linear-gradient(135deg, #4a6bff 0%, #2a4bdf 100%);
            color: white;
            padding: 1.5rem 0;
            border-radius: 0 0 12px 12px;
            box-shadow: 0 4px 12px rgba(42, 75, 223, 0.2);
            margin-bottom: 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover { color: #ffde59; }
        nav { flex-grow: 1; }
        .nav-links {
            display: flex;
            justify-content: flex-end;
            list-style: none;
            gap: 1.8rem;
            flex-wrap: wrap;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 12px;
            border-radius: 6px;
            transition: all 0.3s;
        }
        .nav-links a:hover, .nav-links a.active {
            background: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 5px;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin-bottom: 3rem;
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        aside {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        h1 {
            font-size: 2.8rem;
            color: #2a4bdf;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #ffde59;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 1.9rem;
            color: #333;
            margin: 2.2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #eaeaea;
        }
        h3 {
            font-size: 1.5rem;
            color: #444;
            margin: 1.8rem 0 0.8rem;
        }
        h4 { font-size: 1.2rem; color: #555; margin: 1.5rem 0 0.5rem; }
        p { margin-bottom: 1.2rem; }
        ul, ol { padding-left: 1.8rem; margin-bottom: 1.2rem; }
        li { margin-bottom: 0.5rem; }
        a { color: #2a4bdf; text-decoration: none; }
        a:hover { text-decoration: underline; color: #ff3b5c; }
        strong { color: #222; }
        .info-box {
            background: #e8f4ff;
            border-left: 5px solid #2a4bdf;
            padding: 1.2rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        figure {
            margin: 2rem auto;
            text-align: center;
        }
        figure img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            border: 1px solid #eee;
        }
        figcaption {
            font-size: 0.9rem;
            color: #666;
            margin-top: 0.8rem;
            font-style: italic;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, #2a4bdf, #4a6bff);
            color: white;
            padding: 0.9rem 1.8rem;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            border: none;
            cursor: pointer;
            transition: all 0.3s;
            text-align: center;
            min-width: 140px;
            box-shadow: 0 4px 10px rgba(42, 75, 223, 0.3);
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(42, 75, 223, 0.4);
            text-decoration: none;
        }
        .btn-secondary {
            background: linear-gradient(to right, #ff8a00, #ffad42);
        }
        form {
            background: #f9f9f9;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 1.5rem 0;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.9rem;
            margin-bottom: 1rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
        }
        footer {
            background: #2d3748;
            color: #cbd5e0;
            padding: 2.5rem 0;
            border-radius: 12px 12px 0 0;
            margin-top: 3rem;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
        }
        friend-link a {
            color: #90cdf4;
        }
        .social-share {
            display: flex;
            gap: 1rem;
            justify-content: center;
            margin: 2rem 0;
        }
        .social-icon {
            width: 44px;
            height: 44px;
            background: #4a6bff;
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            transition: all 0.3s;
        }
        .social-icon:hover {
            transform: scale(1.1);
            background: #ff3b5c;
        }
        #backToTop, #shareFloating {
            position: fixed;
            bottom: 30px;
            width: 50px;
            height: 50px;
            background: #2a4bdf;
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            cursor: pointer;
            z-index: 999;
            box-shadow: 0 4px 10px rgba(0,0,0,0.2);
            transition: all 0.3s;
            border: none;
        }
        #backToTop { right: 30px; }
        #shareFloating { right: 90px; background: #ff8a00; }
        #backToTop:hover, #shareFloating:hover { transform: translateY(-5px); }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }
        th, td {
            border: 1px solid #ddd;
            padding: 0.8rem;
            text-align: left;
        }
        th { background: #f1f5fd; }
        .rating {
            color: #ffc107;
            font-size: 1.2rem;
        }
        @media (max-width: 1024px) {
            main { grid-template-columns: 1fr; }
            aside { position: static; }
        }
        @media (max-width: 768px) {
            .header-container { flex-direction: column; align-items: flex-start; }
            .hamburger { display: block; }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 1rem;
            }
            .nav-links.active { display: flex; }
            .nav-links li { margin-bottom: 0.8rem; }
            h1 { font-size: 2.2rem; }
            article, aside { padding: 1.5rem; }
            #backToTop, #shareFloating { width: 44px; height: 44px; bottom: 20px; }
            #backToTop { right: 20px; }
            #shareFloating { right: 74px; }
        }
        @media (max-width: 480px) {
            body { padding: 0 10px; }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.6rem; }
            .my-logo { font-size: 1.8rem; }
        }
        .text-center { text-align: center; }
        .mt-3 { margin-top: 3rem; }
        .mb-3 { margin-bottom: 3rem; }
        .highlight { background: #fff9c4; padding: 2px 6px; border-radius: 3px; }
        .update-badge {
            background: #ff3b5c;
            color: white;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: bold;
            margin-left: 10px;
        }