* { 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: 100vw;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        h1, h2, h3, h4 { font-weight: 800; color: #1a1a1a; margin-bottom: 1rem; line-height: 1.2; }
        h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); margin-top: 1.5rem; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); border-bottom: 3px solid #ff6b35; padding-bottom: 0.5rem; margin-top: 3rem; }
        h3 { font-size: clamp(1.5rem, 3vw, 1.9rem); color: #2d3748; margin-top: 2.5rem; }
        h4 { font-size: 1.4rem; color: #4a5568; margin-top: 2rem; }
        p { margin-bottom: 1.5rem; font-size: 1.1rem; }
        a { color: #3182ce; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #ff6b35; }
        strong { color: #2d3748; font-weight: 800; }
        .lead { font-size: 1.3rem; font-weight: 500; color: #4a5568; margin-bottom: 2rem; }
        .emoji { font-size: 1.2em; margin-right: 0.3rem; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        main .container {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding-top: 2rem;
            padding-bottom: 3rem;
        }
        @media (max-width: 992px) {
            main .container { grid-template-columns: 1fr; }
        }
        header {
            background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
            color: white;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 900;
            background: linear-gradient(to right, #ff6b35, #f7c42a);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-decoration: none;
            display: flex;
            align-items: center;
        }
        .my-logo i { margin-right: 10px; color: #f7c42a; }
        .my-logo:hover { color: #ff6b35; }
        .breadcrumb {
            background-color: #edf2f7;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 0;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin: 0 0.5rem;
            color: #a0aec0;
        }
        .breadcrumb a { color: #4a5568; }
        .breadcrumb a:hover { color: #3182ce; }
        nav ul {
            display: flex;
            list-style: none;
        }
        nav li { margin-left: 2rem; }
        nav a {
            color: #cbd5e0;
            font-weight: 600;
            font-size: 1rem;
            padding: 0.5rem 0;
            position: relative;
        }
        nav a:hover, nav a.active { color: white; }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #ff6b35;
            transition: width 0.3s ease;
        }
        nav a:hover::after, nav a.active::after { width: 100%; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            nav { display: none; width: 100%; order: 3; }
            nav.active {
                display: block;
                position: absolute;
                top: 100%;
                left: 0;
                background: #2d3748;
                width: 100%;
                padding: 1rem;
                box-shadow: 0 5px 10px rgba(0,0,0,0.2);
            }
            nav.active ul { flex-direction: column; }
            nav.active li { margin: 0.8rem 0; margin-left: 0; }
            .header-top { flex-wrap: wrap; }
        }
        .content {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .article-meta {
            color: #718096;
            font-size: 0.95rem;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #e2e8f0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .sidebar {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            margin-bottom: 2.5rem;
        }
        .sidebar h3 { font-size: 1.3rem; margin-top: 0; }
        .search-form { display: flex; margin-bottom: 1.5rem; }
        .search-input {
            flex-grow: 1;
            padding: 0.8rem;
            border: 2px solid #e2e8f0;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-input:focus { border-color: #3182ce; }
        .search-btn {
            background: #3182ce;
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.3s;
        }
        .search-btn:hover { background: #2c5282; }
        .rating-form, .comment-form { display: flex; flex-direction: column; }
        .rating-form label, .comment-form label { font-weight: 600; margin-bottom: 0.5rem; }
        .stars { display: flex; gap: 0.3rem; margin-bottom: 1rem; direction: rtl; }
        .star { font-size: 1.8rem; color: #e2e8f0; cursor: pointer; transition: color 0.2s; }
        .star:hover, .star:hover ~ .star { color: #f7c42a; }
        .rating-form input:checked ~ .star { color: #f7c42a; }
        .rating-form input { display: none; }
        .form-input, textarea {
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 2px solid #e2e8f0;
            border-radius: 8px;
            font-size: 1rem;
            font-family: inherit;
            transition: border 0.3s;
        }
        textarea { min-height: 120px; resize: vertical; }
        .form-input:focus, textarea:focus { border-color: #3182ce; outline: none; }
        .submit-btn {
            background: #ff6b35;
            color: white;
            border: none;
            padding: 1rem;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }
        .submit-btn:hover { background: #e55a2b; }
        .img-featured {
            width: 100%;
            border-radius: 10px;
            margin: 2.5rem 0;
            border: 1px solid #e2e8f0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }
        .highlight-box {
            background: linear-gradient(to right, #edf2f7, #f7fafc);
            border-left: 5px solid #3182ce;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .link-list {
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .link-list ul { list-style: none; padding-left: 0; }
        .link-list li { margin-bottom: 0.8rem; padding-left: 1.5rem; position: relative; }
        .link-list li::before { content: '➤'; position: absolute; left: 0; color: #ff6b35; }
        .data-point { display: inline-flex; align-items: center; background: #e6fffa; color: #234e52; padding: 0.3rem 0.8rem; border-radius: 50px; font-weight: bold; margin: 0 0.5rem; font-size: 0.9rem; }
        footer {
            background: #1a202c;
            color: #cbd5e0;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo { font-size: 1.8rem; font-weight: 900; color: white; margin-bottom: 1rem; }
        .footer-links { display: flex; flex-direction: column; gap: 0.8rem; }
        .footer-links a { color: #cbd5e0; }
        .footer-links a:hover { color: #ff6b35; }
        friend-link {
            display: inline-block;
            background: #2d3748;
            color: #f7c42a;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            margin: 0.5rem;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
        }
        friend-link:hover {
            background: #ff6b35;
            color: white;
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2d3748;
            font-size: 0.9rem;
            color: #a0aec0;
        }
        .text-center { text-align: center; }
        .mb-3 { margin-bottom: 3rem; }
        .mt-3 { margin-top: 3rem; }