* {
            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-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            color: #3498db;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #e74c3c;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #2c3e50, #1a1a2e);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #f39c12, #e74c3c);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }
        .my-logo a {
            background: none;
            -webkit-text-fill-color: inherit;
        }
        .main-nav {
            display: flex;
            align-items: center;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-list a {
            color: #ecf0f1;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
        }
        .nav-list a:hover,
        .nav-list a.active {
            background-color: rgba(255,255,255,0.1);
            color: #f39c12;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: white;
            border-radius: 2px;
            transition: 0.3s;
        }
        .search-form {
            margin-left: 2rem;
            display: flex;
        }
        .search-input {
            padding: 0.5rem 1rem;
            border: none;
            border-radius: 20px 0 0 20px;
            width: 220px;
            outline: none;
        }
        .search-btn {
            background: #f39c12;
            border: none;
            border-radius: 0 20px 20px 0;
            color: white;
            padding: 0.5rem 1.2rem;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-btn:hover {
            background: #e67e22;
        }
        .breadcrumb {
            background-color: #ecf0f1;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 0.5rem;
            color: #7f8c8d;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .article-header {
            margin-bottom: 2.5rem;
            border-bottom: 2px solid #f39c12;
            padding-bottom: 1.5rem;
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: #2c3e50;
            line-height: 1.2;
            margin-bottom: 1rem;
        }
        .meta-info {
            display: flex;
            gap: 1.5rem;
            color: #7f8c8d;
            font-size: 0.95rem;
        }
        .meta-info i {
            margin-right: 0.5rem;
        }
        h1, h2, h3, h4 {
            color: #2c3e50;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.2rem; border-left: 5px solid #3498db; padding-left: 1rem; }
        h3 { font-size: 1.8rem; color: #e74c3c; }
        h4 { font-size: 1.4rem; color: #27ae60; }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            color: #2c3e50;
            font-weight: 500;
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid #3498db;
        }
        .highlight {
            background-color: #fffacd;
            padding: 1.5rem;
            border-radius: 8px;
            border: 1px dashed #f39c12;
            margin: 2rem 0;
        }
        .highlight strong {
            color: #e74c3c;
        }
        .internal-link {
            background-color: #e8f4fc;
            padding: 0.2rem 0.5rem;
            border-radius: 3px;
            font-weight: 600;
        }
        .internal-link:hover {
            background-color: #d1ecf1;
        }
        .tip {
            background-color: #d4edda;
            color: #155724;
            padding: 1rem;
            border-radius: 8px;
            margin: 1.5rem 0;
            border-left: 5px solid #28a745;
        }
        .tip:before {
            content: '💡';
            margin-right: 0.5rem;
            font-size: 1.2rem;
        }
        .article-image {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 800px;
        }
        .article-image img {
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            border: 3px solid #f39c12;
        }
        .article-image figcaption {
            font-style: italic;
            color: #7f8c8d;
            margin-top: 0.8rem;
            font-size: 0.95rem;
        }
        .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 h3 {
            font-size: 1.5rem;
            margin-top: 0;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #f39c12;
        }
        .sidebar ul {
            list-style: none;
            margin-top: 1.5rem;
        }
        .sidebar li {
            margin-bottom: 1rem;
            padding-left: 1.5rem;
            position: relative;
        }
        .sidebar li:before {
            content: '▶';
            position: absolute;
            left: 0;
            color: #f39c12;
            font-size: 0.8rem;
        }
        .cta-box {
            background: linear-gradient(135deg, #3498db, #2c3e50);
            color: white;
            padding: 1.5rem;
            border-radius: 10px;
            text-align: center;
            margin-top: 2rem;
        }
        .cta-button {
            display: inline-block;
            background: #f39c12;
            color: white;
            padding: 0.8rem 2rem;
            border-radius: 30px;
            font-weight: bold;
            margin-top: 1rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            transition: transform 0.3s, background 0.3s;
        }
        .cta-button:hover {
            background: #e67e22;
            transform: translateY(-3px);
            color: white;
        }
        .user-interaction {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            margin-top: 3rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .rating-form, .comment-form {
            margin-top: 2rem;
        }
        .star-rating {
            direction: rtl;
            display: inline-block;
            font-size: 2rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #f39c12;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus {
            border-color: #3498db;
            outline: none;
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background: #27ae60;
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }
        .submit-btn:hover {
            background: #219653;
        }
        .site-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: #f39c12;
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            border-bottom: 2px solid #34495e;
            padding-bottom: 0.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #bdc3c7;
        }
        .footer-links a:hover {
            color: #f39c12;
            padding-left: 5px;
            transition: all 0.3s;
        }
        friend-link {
            display: block;
            background: #34495e;
            padding: 1rem;
            border-radius: 6px;
            margin-bottom: 0.8rem;
            transition: background 0.3s;
        }
        friend-link:hover {
            background: #3d566e;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #34495e;
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .hamburger {
                display: flex;
                order: 1;
            }
            .main-nav {
                order: 3;
                width: 100%;
                display: none;
                margin-top: 1rem;
            }
            .main-nav.active {
                display: block;
            }
            .nav-list {
                flex-direction: column;
                gap: 0;
            }
            .nav-list li {
                width: 100%;
            }
            .nav-list a {
                display: block;
                padding: 1rem;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .search-form {
                margin-left: 0;
                margin-top: 1rem;
                order: 2;
                flex: 1;
                justify-content: center;
            }
            .search-input {
                width: 100%;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            h2 { font-size: 1.9rem; }
            h3 { font-size: 1.6rem; }
            .article-content {
                padding: 1.5rem;
            }
            .sidebar {
                position: static;
            }
        }