* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #f0e6d2 100%);
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            color: #d2691e;
            text-decoration: none;
            transition: color 0.3s ease, border-bottom 0.3s ease;
        }
        a:hover {
            color: #8b4513;
            border-bottom: 2px solid #d2691e;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(90deg, #8b4513 0%, #d2691e 100%);
            color: #fff;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(139, 69, 19, 0.2);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: #ffd700;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            font-size: 2.5rem;
        }
        .my-logo a {
            color: inherit;
            border: none;
        }
        .my-logo a:hover {
            color: #fff;
            border: none;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: #fff;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            border: 2px solid transparent;
        }
        nav a:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #ffd700;
            color: #ffd700;
            border-bottom: 2px solid transparent;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #fff;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: #8b4513;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
            z-index: 999;
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: #fff;
            padding: 0.8rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .mobile-nav a:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #ffd700;
        }
        .breadcrumb {
            padding: 1rem 0;
            background: #f8f1e5;
            border-bottom: 1px solid #e0d0b8;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin: 0 10px;
            color: #d2691e;
        }
        .breadcrumb a {
            color: #8b4513;
        }
        main {
            padding: 2rem 0;
            background: #fff;
            border-radius: 10px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            margin: 2rem auto;
            overflow: hidden;
        }
        .article-container {
            padding: 0 2rem;
        }
        h1, h2, h3, h4 {
            color: #8b4513;
            margin-top: 2rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            border-bottom: 4px solid #ffd700;
            padding-bottom: 0.5rem;
            text-align: center;
        }
        h2 {
            font-size: 2.2rem;
            border-left: 6px solid #d2691e;
            padding-left: 1rem;
            margin-top: 3rem;
        }
        h3 {
            font-size: 1.8rem;
            color: #a0522d;
        }
        h4 {
            font-size: 1.4rem;
            color: #cd853f;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 600;
            color: #5a3921;
            background: #fff8e1;
            padding: 1.5rem;
            border-radius: 10px;
            border-left: 5px solid #d2691e;
            margin: 2rem 0;
        }
        .highlight {
            background: linear-gradient(120deg, #ffecb3 0%, #ffecb3 100%);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        strong {
            color: #8b4513;
        }
        em {
            color: #a0522d;
            font-style: italic;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        .article-img {
            margin: 2rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(139, 69, 19, 0.2);
            max-width: 800px;
        }
        .article-img img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .article-img img:hover {
            transform: scale(1.02);
        }
        .caption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 0.5rem;
            background: #f9f5ef;
        }
        .user-interaction {
            background: #f9f5ef;
            border-radius: 10px;
            padding: 2rem;
            margin: 3rem 0;
            border: 2px solid #e0d0b8;
        }
        .user-interaction h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #8b4513;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid #d2691e;
            border-radius: 5px;
            font-size: 1rem;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #8b4513;
            box-shadow: 0 0 0 3px rgba(139, 69, 19, 0.2);
        }
        button, .btn {
            background: linear-gradient(90deg, #d2691e 0%, #8b4513 100%);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 5px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-block;
            text-align: center;
        }
        button:hover, .btn:hover {
            background: linear-gradient(90deg, #8b4513 0%, #5a3921 100%);
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(139, 69, 19, 0.3);
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            direction: ltr;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s ease;
            margin: 0;
        }
        .rating-stars input:checked ~ label,
        .rating-stars label:hover,
        .rating-stars label:hover ~ label {
            color: #ffd700;
        }
        .last-updated {
            text-align: right;
            font-size: 0.9rem;
            color: #888;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px dashed #ccc;
        }
        footer {
            background: #2c1810;
            color: #f0e6d2;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h4 {
            color: #ffd700;
            border-bottom: 2px solid #d2691e;
            padding-bottom: 0.5rem;
            margin-bottom: 1.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #f0e6d2;
            border-bottom: 1px dotted transparent;
        }
        .footer-links a:hover {
            color: #ffd700;
            border-bottom-color: #ffd700;
        }
        friend-link {
            display: inline-block;
            background: #3a2318;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
            transition: background 0.3s ease;
        }
        friend-link:hover {
            background: #4a2c1e;
        }
        friend-link a {
            color: #ffd700;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #4a2c1e;
            font-size: 0.9rem;
            color: #b8a28a;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            .header-container { flex-wrap: wrap; }
            nav ul { gap: 1rem; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            nav ul { display: none; }
            .article-container { padding: 0 1rem; }
            .user-interaction { padding: 1.5rem; }
            .footer-container { grid-template-columns: 1fr; }
        }
        @media (max-width: 576px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            .my-logo { font-size: 1.5rem; }
            .my-logo i { font-size: 2rem; }
        }