* { 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: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a { color: #2563eb; text-decoration: none; transition: all 0.3s ease; }
        a:hover { color: #1d4ed8; text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { padding-left: 1.5rem; margin: 1rem 0; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
        .site-header {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #60a5fa;
            text-transform: uppercase;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover { color: #93c5fd; text-decoration: none; }
        .my-logo i { font-size: 2rem; }
        .nav-main ul { display: flex; list-style: none; gap: 2rem; }
        .nav-main a {
            color: #cbd5e1;
            font-weight: 600;
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
        }
        .nav-main a:hover,
        .nav-main a.active { color: white; border-bottom-color: #60a5fa; text-decoration: none; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background: #e2e8f0;
            padding: 0.8rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb .container { display: flex; gap: 0.5rem; flex-wrap: wrap; }
        .breadcrumb a { color: #4b5563; }
        .breadcrumb span { color: #6b7280; }
        .search-bar {
            background: #1e40af;
            padding: 2rem 0;
            margin-bottom: 2rem;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.2);
        }
        .search-input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1.1rem;
        }
        .search-btn {
            background: #f59e0b;
            color: white;
            border: none;
            padding: 0 2rem;
            cursor: pointer;
            font-weight: bold;
            font-size: 1.1rem;
            transition: background 0.3s;
        }
        .search-btn:hover { background: #d97706; }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        .article-area {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .sidebar {
            background: white;
            border-radius: 12px;
            padding: 1.5rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
        }
        .sidebar h3 {
            color: #1e293b;
            border-left: 4px solid #3b82f6;
            padding-left: 0.8rem;
            margin-bottom: 1.5rem;
        }
        .link-list { list-style: none; padding: 0; }
        .link-list li { margin-bottom: 0.8rem; padding-bottom: 0.8rem; border-bottom: 1px dashed #e5e7eb; }
        .link-list a { display: flex; align-items: center; gap: 10px; }
        .link-list i { color: #f59e0b; }
        h1 {
            color: #1e293b;
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 1.5rem;
            border-bottom: 3px solid #f59e0b;
            padding-bottom: 1rem;
        }
        h2 {
            color: #334155;
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-top: 1rem;
            border-top: 1px solid #e2e8f0;
        }
        h3 {
            color: #475569;
            font-size: 1.5rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: #64748b;
            font-size: 1.2rem;
            margin: 1.5rem 0 0.8rem;
        }
        p { margin-bottom: 1.5rem; text-align: justify; }
        .lead {
            font-size: 1.2rem;
            color: #4b5563;
            font-weight: 500;
            background: #f0f9ff;
            padding: 1.5rem;
            border-left: 4px solid #3b82f6;
            border-radius: 0 8px 8px 0;
            margin-bottom: 2rem;
        }
        .highlight {
            background: linear-gradient(120deg, #fef3c7 0%, #fef3c7 100%);
            padding: 1.5rem;
            border-radius: 8px;
            border: 1px solid #fcd34d;
            margin: 1.5rem 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: #eff6ff;
            padding: 1.5rem;
            border-radius: 10px;
            text-align: center;
            border: 1px solid #bfdbfe;
        }
        .stat-card i { font-size: 2.5rem; color: #3b82f6; margin-bottom: 1rem; }
        .stat-card h4 { margin: 0; color: #1e40af; }
        .update-time {
            font-size: 0.9rem;
            color: #6b7280;
            text-align: right;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid #e5e7eb;
        }
        .update-time i { margin-right: 5px; }
        .article-img {
            margin: 2rem auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            max-width: 800px;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #6b7280;
            padding: 0.5rem;
            font-size: 0.9rem;
            background: #f9fafb;
        }
        .interaction-section {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            margin: 3rem 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .form-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 1.5rem;
        }
        .form-group { margin-bottom: 1.2rem; }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #4b5563;
        }
        .form-control {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid #d1d5db;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus {
            outline: none;
            border-color: #3b82f6;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
        }
        .rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 5px;
        }
        .rating input { display: none; }
        .rating label {
            font-size: 1.8rem;
            color: #d1d5db;
            cursor: pointer;
            transition: color 0.2s;
        }
        .rating input:checked ~ label,
        .rating label:hover,
        .rating label:hover ~ label { color: #f59e0b; }
        .btn {
            background: #3b82f6;
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.3s;
        }
        .btn:hover { background: #2563eb; text-decoration: none; }
        .btn-warning { background: #f59e0b; }
        .btn-warning:hover { background: #d97706; }
        .site-footer {
            background: #1e293b;
            color: #cbd5e1;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #60a5fa;
            margin-bottom: 1rem;
        }
        .footer-heading {
            color: white;
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #3b82f6;
            display: inline-block;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
            color: #93c5fd;
        }
        friend-link:hover { color: white; text-decoration: underline; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #374151;
            font-size: 0.9rem;
            color: #9ca3af;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.7rem; }
            .header-container { flex-wrap: wrap; }
            .hamburger { display: block; }
            .nav-main {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.4s ease;
            }
            .nav-main.active { max-height: 300px; margin-top: 1rem; }
            .nav-main ul { flex-direction: column; gap: 0; }
            .nav-main li { border-bottom: 1px solid #374151; }
            .nav-main a { display: block; padding: 1rem 0; }
            .article-area { padding: 1.5rem; }
        }