* { 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: #333;
            background-color: #f8f9fa;
            max-width: 120rem;
            margin: 0 auto;
            padding: 0 1rem;
        }
        img { max-width: 100%; height: auto; display: block; }
        h1, h2, h3, h4 { font-weight: 800; line-height: 1.2; margin-bottom: 1rem; color: #1a1a1a; }
        h1 { font-size: clamp(2.5rem, 5vw, 3.8rem); margin-top: 1.5rem; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); margin-top: 2.5rem; padding-bottom: 0.5rem; border-bottom: 3px solid #4a6ee0; }
        h3 { font-size: clamp(1.5rem, 3vw, 1.9rem); margin-top: 2rem; color: #2d3748; }
        h4 { font-size: 1.3rem; margin-top: 1.5rem; color: #4a5568; }
        p { margin-bottom: 1.2rem; font-size: 1.1rem; }
        a { color: #4a6ee0; text-decoration: none; transition: color 0.2s ease; }
        a:hover { color: #2a4bc9; text-decoration: underline; }
        strong { color: #1a202c; }
        .emoji { font-size: 1.2em; margin-right: 0.3rem; }
        .container {
            display: grid;
            grid-template-columns: 1fr;
            grid-template-areas:
                "header"
                "nav"
                "breadcrumb"
                "main"
                "sidebar"
                "footer";
            gap: 2rem;
        }
        @media (min-width: 992px) {
            .container {
                grid-template-columns: 3fr 1fr;
                grid-template-areas:
                    "header header"
                    "nav nav"
                    "breadcrumb breadcrumb"
                    "main sidebar"
                    "footer footer";
            }
        }
        header { grid-area: header; padding: 1.5rem 0; text-align: center; border-bottom: 1px solid #e2e8f0; }
        .my-logo {
            font-size: clamp(2rem, 5vw, 2.8rem);
            font-weight: 900;
            background: linear-gradient(90deg, #4a6ee0, #9a4dff);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-decoration: none;
            display: inline-block;
        }
        .my-logo:hover { text-decoration: none; }
        nav { grid-area: nav; background-color: #2d3748; border-radius: 8px; }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 1.5rem;
            position: relative;
        }
        .nav-links {
            display: flex;
            list-style: none;
            flex-direction: column;
            width: 100%;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease-out;
            background-color: #2d3748;
            position: absolute;
            top: 100%;
            left: 0;
            z-index: 1000;
            border-radius: 0 0 8px 8px;
        }
        .nav-links.active {
            max-height: 500px;
            padding-bottom: 1rem;
        }
        .nav-links li { width: 100%; }
        .nav-links a {
            display: block;
            padding: 1rem 1.5rem;
            color: #e2e8f0;
            font-weight: 600;
            border-bottom: 1px solid #4a5568;
        }
        .nav-links a:hover {
            background-color: #4a5568;
            color: white;
            text-decoration: none;
        }
        .hamburger {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            width: 30px;
            height: 21px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 0;
        }
        .hamburger span {
            display: block;
            height: 3px;
            width: 100%;
            background-color: #e2e8f0;
            border-radius: 3px;
            transition: all 0.3s ease;
        }
        .hamburger.active span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }
        @media (min-width: 768px) {
            .nav-links {
                flex-direction: row;
                max-height: none;
                position: static;
                width: auto;
                gap: 0.2rem;
            }
            .nav-links a { border-bottom: none; border-radius: 4px; }
            .hamburger { display: none; }
        }
        .breadcrumb { grid-area: breadcrumb; font-size: 0.9rem; color: #718096; padding: 0.5rem 0; }
        .breadcrumb a { color: #4a5568; }
        main { grid-area: main; background: white; padding: 2rem; border-radius: 10px; box-shadow: 0 4px 12px rgba(0,0,0,0.05); }
        article > * + * { margin-top: 1.5rem; }
        aside { grid-area: sidebar; }
        .sidebar-widget {
            background: white;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.05);
        }
        .sidebar-widget h3 { font-size: 1.3rem; margin-top: 0; }
        input, textarea, select, button {
            font-family: inherit;
            font-size: 1rem;
            padding: 0.75rem;
            margin-bottom: 1rem;
            border: 1px solid #cbd5e0;
            border-radius: 6px;
            width: 100%;
        }
        button {
            background: linear-gradient(to right, #4a6ee0, #6b46c1);
            color: white;
            border: none;
            font-weight: 600;
            cursor: pointer;
            transition: opacity 0.3s ease;
        }
        button:hover { opacity: 0.9; }
        .rating-stars { display: flex; gap: 0.5rem; margin: 1rem 0; font-size: 1.8rem; color: #e2e8f0; cursor: pointer; }
        .rating-stars span:hover,
        .rating-stars span:hover ~ span { color: #e2e8f0; }
        .rating-stars .selected { color: #f6ad55; }
        .featured-img {
            margin: 2.5rem 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .featured-img figcaption {
            text-align: center;
            font-style: italic;
            color: #718096;
            padding: 0.8rem;
            background-color: #f7fafc;
            font-size: 0.95rem;
        }
        footer { grid-area: footer; padding: 3rem 0 1.5rem; border-top: 1px solid #e2e8f0; color: #4a5568; }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section { flex: 1; min-width: 200px; }
        friend-link {
            display: block;
            margin-bottom: 0.5rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #e2e8f0;
            font-size: 0.9rem;
        }
        .highlight-box {
            background: linear-gradient(135deg, #f0f4ff, #e6f7ff);
            border-left: 5px solid #4a6ee0;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .last-updated {
            font-size: 0.9rem;
            color: #718096;
            text-align: right;
            margin-top: 2rem;
            font-style: italic;
        }
        .tag-list { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1rem 0; }
        .tag { background: #edf2f7; padding: 0.4rem 0.8rem; border-radius: 20px; font-size: 0.85rem; }