* {
            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: 100%;
            overflow-x: hidden;
        }
        a {
            color: #2a5bd7;
            text-decoration: none;
            transition: color 0.3s ease, background-color 0.3s ease;
        }
        a:hover {
            color: #1e3fa1;
        }
        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, #0f172a 0%, #1e293b 100%);
            color: white;
            padding: 1.5rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: #60a5fa;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo a:hover {
            color: #93c5fd;
        }
        .logo-icon {
            color: #fbbf24;
        }
        .breadcrumb {
            background-color: #e2e8f0;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 1.5rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin: 0 10px;
            color: #64748b;
        }
        .breadcrumb a {
            color: #475569;
        }
        .breadcrumb a:hover {
            color: #1e293b;
        }
        .main-nav {
            display: flex;
            align-items: center;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-list a {
            color: #cbd5e1;
            font-weight: 600;
            padding: 0.5rem 0.75rem;
            border-radius: 5px;
        }
        .nav-list a:hover,
        .nav-list a.active {
            color: white;
            background-color: rgba(255, 255, 255, 0.1);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: #cbd5e1;
            border-radius: 2px;
            transition: 0.3s;
        }
        .search-box {
            display: flex;
            margin-left: 2rem;
            border-radius: 50px;
            overflow: hidden;
            background: white;
            border: 1px solid #cbd5e1;
        }
        .search-box input {
            padding: 0.6rem 1rem;
            border: none;
            outline: none;
            width: 220px;
        }
        .search-box button {
            background: #3b82f6;
            color: white;
            border: none;
            padding: 0.6rem 1.2rem;
            cursor: pointer;
        }
        .search-box button:hover {
            background: #2563eb;
        }
        .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 #e2e8f0;
            padding-bottom: 1.5rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #1e293b;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            color: #64748b;
            font-size: 0.95rem;
            display: flex;
            gap: 1.5rem;
            margin-bottom: 1rem;
        }
        .article-meta i {
            margin-right: 5px;
        }
        h2 {
            font-size: 2rem;
            color: #334155;
            margin: 2.5rem 0 1.2rem;
            padding-top: 1rem;
            border-top: 1px solid #e2e8f0;
        }
        h3 {
            font-size: 1.6rem;
            color: #475569;
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            color: #4b5563;
        }
        .highlight {
            background: linear-gradient(120deg, #fef3c7 0%, #fef3c7 100%);
            padding: 1.5rem;
            border-left: 5px solid #f59e0b;
            border-radius: 0 8px 8px 0;
            margin: 2rem 0;
        }
        .featured-img {
            margin: 2.5rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            max-width: 800px;
        }
        .featured-img img {
            width: 100%;
            height: auto;
        }
        .caption {
            text-align: center;
            font-style: italic;
            color: #64748b;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.7rem;
        }
        .tip {
            background-color: #dbeafe;
            border-left: 5px solid #3b82f6;
            padding: 1.2rem;
            border-radius: 0 8px 8px 0;
            margin: 1.8rem 0;
        }
        .tip strong {
            color: #1e40af;
        }
        .quote {
            font-style: italic;
            color: #475569;
            border-left: 4px solid #94a3b8;
            padding-left: 1.5rem;
            margin: 2rem 0 2rem 1.5rem;
        }
        .author {
            font-weight: bold;
            color: #1e293b;
            margin-top: 0.5rem;
        }
        .sidebar {
            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;
        }
        .sidebar-widget {
            margin-bottom: 2.5rem;
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            color: #1e293b;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e2e8f0;
        }
        .widget-links a {
            display: block;
            padding: 0.8rem 1rem;
            margin-bottom: 0.7rem;
            background-color: #f8fafc;
            border-radius: 6px;
            border-left: 4px solid #3b82f6;
        }
        .widget-links a:hover {
            background-color: #e0f2fe;
            border-left-color: #1d4ed8;
        }
        .download-box {
            text-align: center;
            background: linear-gradient(135deg, #1e3a8a, #3b82f6);
            color: white;
            padding: 2rem 1.5rem;
            border-radius: 10px;
        }
        .download-box h4 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }
        .download-box p {
            color: #dbeafe;
            margin-bottom: 1.5rem;
        }
        .btn {
            display: inline-block;
            background: #fbbf24;
            color: #78350f;
            padding: 0.9rem 2rem;
            border-radius: 50px;
            font-weight: bold;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .btn:hover {
            background: #f59e0b;
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(245, 158, 11, 0.3);
        }
        .interaction-section {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            margin: 3rem 0;
        }
        .interaction-section h2 {
            border-top: none;
            padding-top: 0;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #475569;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.9rem;
            border: 1px solid #cbd5e1;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
        }
        textarea {
            min-height: 150px;
            resize: vertical;
        }
        .rating {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            direction: rtl; 
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 2rem;
            color: #cbd5e1;
            cursor: pointer;
            transition: color 0.3s;
        }
        .rating input:checked ~ label,
        .rating label:hover,
        .rating label:hover ~ label {
            color: #fbbf24;
        }
        .footer-links {
            background: #1e293b;
            color: #cbd5e1;
            padding: 3rem 0;
            margin-top: 3rem;
        }
        .web-link-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-bottom: 2.5rem;
        }
        .web-link {
            background: #334155;
            padding: 1.2rem;
            border-radius: 8px;
            transition: transform 0.3s ease;
        }
        .web-link:hover {
            transform: translateY(-5px);
            background: #475569;
        }
        .web-link a {
            color: #60a5fa;
            font-weight: 600;
            display: block;
        }
        .copyright {
            background: #0f172a;
            color: #94a3b8;
            text-align: center;
            padding: 1.8rem;
            font-size: 0.95rem;
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .hamburger {
                display: flex;
                order: 1;
            }
            .main-nav {
                order: 3;
                width: 100%;
                margin-top: 1.5rem;
                display: none;
            }
            .main-nav.active {
                display: block;
            }
            .nav-list {
                flex-direction: column;
                gap: 0.5rem;
            }
            .nav-list li {
                width: 100%;
            }
            .nav-list a {
                display: block;
                padding: 1rem;
                border-radius: 6px;
            }
            .search-box {
                margin: 1rem 0 0 0;
                width: 100%;
                order: 2;
            }
            .search-box input {
                width: 100%;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .article-content,
            .sidebar,
            .interaction-section {
                padding: 1.8rem;
            }
        }