* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #0f172a;
            color: #e2e8f0;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: #60a5fa;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #38bdf8;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        section {
            padding: 40px 0;
        }
        header {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
            padding: 15px 0;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #fbbf24, #f59e0b);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }
        .my-logo:hover {
            text-decoration: none;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        nav ul li a {
            font-weight: 600;
            color: #cbd5e1;
            padding: 8px 12px;
            border-radius: 6px;
        }
        nav ul li a:hover,
        nav ul li a.active {
            background-color: rgba(96, 165, 250, 0.15);
            color: #60a5fa;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #fbbf24;
        }
        .breadcrumb {
            background-color: #1e293b;
            padding: 12px 0;
            font-size: 0.9rem;
            color: #94a3b8;
            margin-top: 10px;
        }
        .breadcrumb a {
            color: #cbd5e1;
        }
        .breadcrumb span {
            margin: 0 8px;
            color: #64748b;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin-top: 30px;
        }
        article {
            background: #1e293b;
            border-radius: 16px;
            padding: 40px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
        }
        h1 {
            font-size: 2.8rem;
            margin-bottom: 20px;
            color: #fbbf24;
            line-height: 1.2;
            border-left: 6px solid #3b82f6;
            padding-left: 20px;
        }
        h2 {
            font-size: 2rem;
            color: #60a5fa;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #334155;
        }
        h3 {
            font-size: 1.6rem;
            color: #38bdf8;
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: #7dd3fc;
            margin: 25px 0 12px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            color: #cbd5e1;
            font-weight: 500;
            background: rgba(59, 130, 246, 0.1);
            padding: 20px;
            border-radius: 10px;
            border-left: 4px solid #3b82f6;
        }
        .highlight-box {
            background: linear-gradient(135deg, #1e40af, #1e3a8a);
            padding: 25px;
            border-radius: 12px;
            margin: 30px 0;
            border-left: 6px solid #fbbf24;
        }
        .highlight-box h3 {
            color: #fbbf24;
            margin-top: 0;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 25px;
        }
        li {
            margin-bottom: 10px;
        }
        .featured-img {
            width: 100%;
            margin: 30px auto;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #94a3b8;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .tag {
            display: inline-block;
            background-color: #374151;
            color: #d1d5db;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.85rem;
            margin-right: 10px;
            margin-bottom: 10px;
        }
        aside {
            background: #1e293b;
            border-radius: 16px;
            padding: 25px;
            align-self: start;
            position: sticky;
            top: 120px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
        }
        .widget {
            margin-bottom: 35px;
        }
        .widget-title {
            font-size: 1.4rem;
            color: #fbbf24;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid #374151;
        }
        .search-form {
            display: flex;
            margin-bottom: 25px;
        }
        .search-form input {
            flex-grow: 1;
            padding: 14px;
            border: 2px solid #4b5563;
            background-color: #111827;
            color: #f9fafb;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
        }
        .search-form button {
            background-color: #3b82f6;
            color: white;
            border: none;
            padding: 0 22px;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background-color 0.3s;
        }
        .search-form button:hover {
            background-color: #2563eb;
        }
        .related-links a {
            display: block;
            padding: 12px 15px;
            margin-bottom: 10px;
            background-color: #111827;
            border-radius: 8px;
            border-left: 4px solid #10b981;
            transition: all 0.3s;
        }
        .related-links a:hover {
            background-color: #1f2937;
            border-left-color: #3b82f6;
            text-decoration: none;
            transform: translateX(5px);
        }
        .user-interaction {
            background: #1e293b;
            border-radius: 16px;
            padding: 40px;
            margin-top: 40px;
        }
        .form-group {
            margin-bottom: 25px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #cbd5e1;
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 15px;
            background-color: #111827;
            border: 2px solid #4b5563;
            border-radius: 8px;
            color: #f9fafb;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: #3b82f6;
            outline: none;
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            font-size: 2rem;
            color: #4b5563;
            cursor: pointer;
        }
        .rating-stars .star:hover,
        .rating-stars .star.active {
            color: #fbbf24;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(90deg, #3b82f6, #1d4ed8);
            color: white;
            padding: 16px 32px;
            border: none;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
        }
        .btn:hover {
            background: linear-gradient(90deg, #2563eb, #1e40af);
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
            text-decoration: none;
        }
        .btn-block {
            width: 100%;
            text-align: center;
        }
        footer {
            background-color: #111827;
            padding: 60px 0 30px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 2.5rem;
            font-weight: 800;
            color: #fbbf24;
            margin-bottom: 20px;
        }
        friend-link {
            display: block;
            background-color: #1e293b;
            padding: 20px;
            border-radius: 10px;
            margin-top: 30px;
            text-align: center;
        }
        friend-link a {
            font-size: 1.2rem;
            color: #60a5fa;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #374151;
            color: #94a3b8;
            font-size: 0.95rem;
        }
        .update-time {
            color: #10b981;
            font-weight: bold;
            background: rgba(16, 185, 129, 0.1);
            padding: 5px 15px;
            border-radius: 20px;
            display: inline-block;
            margin: 20px 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            nav ul {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background-color: #1e293b;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.3);
                border-radius: 0 0 12px 12px;
            }
            nav ul.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .header-container {
                flex-wrap: wrap;
            }
            article, .user-interaction, aside {
                padding: 25px;
            }
            .footer-content {
                grid-template-columns: 1fr;
                text-align: center;
            }
        }
        .emoji {
            font-size: 1.3em;
            margin-right: 8px;
        }
        .key-term {
            background-color: rgba(245, 158, 11, 0.15);
            color: #fbbf24;
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: #10b981;
            display: block;
            line-height: 1;
            margin: 15px 0 10px;
        }
        .quote {
            border-left: 5px solid #8b5cf6;
            padding-left: 25px;
            margin: 30px 0;
            font-style: italic;
            color: #cbd5e1;
            background: rgba(139, 92, 246, 0.05);
            padding: 20px;
            border-radius: 0 10px 10px 0;
        }