* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        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;
        }
        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, #1e293b 0%, #0f172a 100%);
            padding: 1.5rem 0;
            border-bottom: 2px solid #334155;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #fbbf24, #f87171);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -0.5px;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            color: #fbbf24;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #fbbf24;
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: #e2e8f0;
            border-radius: 2px;
            transition: 0.3s;
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #94a3b8;
            border-bottom: 1px solid #334155;
        }
        .breadcrumb a {
            color: #94a3b8;
        }
        .breadcrumb a:hover {
            color: #60a5fa;
        }
        .search-container {
            background-color: #1e293b;
            padding: 2rem;
            border-radius: 12px;
            margin: 2rem 0;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-form input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: none;
            border-radius: 8px 0 0 8px;
            background-color: #334155;
            color: #e2e8f0;
            font-size: 1rem;
        }
        .search-form button {
            padding: 0 1.8rem;
            background: linear-gradient(90deg, #3b82f6, #8b5cf6);
            color: white;
            border: none;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-weight: 600;
            transition: opacity 0.3s;
        }
        .search-form button:hover {
            opacity: 0.9;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 768px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background-color: #1e293b;
            border-radius: 16px;
            padding: 2.5rem;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
        }
        h1, h2, h3 {
            color: #f1f5f9;
            margin-top: 2rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            background: linear-gradient(90deg, #60a5fa, #a78bfa);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            border-bottom: 3px solid #475569;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: #fbbf24;
            border-left: 5px solid #f59e0b;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.5rem;
            color: #7dd3fc;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.3rem;
            background-color: rgba(30, 41, 59, 0.7);
            padding: 1.5rem;
            border-radius: 10px;
            border-left: 5px solid #3b82f6;
        }
        .highlight {
            background-color: rgba(251, 191, 36, 0.15);
            padding: 1.5rem;
            border-radius: 10px;
            border: 1px solid #fbbf24;
            margin: 2rem 0;
        }
        .tip {
            background-color: rgba(34, 197, 94, 0.15);
            padding: 1rem;
            border-radius: 8px;
            border-left: 4px solid #22c55e;
            margin: 1.5rem 0;
        }
        em {
            color: #c084fc;
            font-style: italic;
        }
        strong {
            color: #fca5a5;
            font-weight: 700;
        }
        .article-image {
            margin: 2.5rem auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
            max-width: 800px;
        }
        .article-image figcaption {
            text-align: center;
            font-style: italic;
            color: #94a3b8;
            padding: 0.8rem;
            background-color: #334155;
        }
        .sidebar {
            background-color: #1e293b;
            border-radius: 16px;
            padding: 2rem;
            align-self: start;
            position: sticky;
            top: 120px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
        }
        .sidebar h3 {
            color: #fbbf24;
            margin-top: 0;
            border-bottom: 2px solid #475569;
            padding-bottom: 0.5rem;
        }
        .sidebar ul {
            list-style: none;
            padding-left: 1rem;
        }
        .sidebar li {
            margin-bottom: 0.8rem;
            padding-left: 0.5rem;
            border-left: 3px solid #3b82f6;
        }
        .user-interaction {
            background-color: #1e293b;
            border-radius: 16px;
            padding: 2.5rem;
            margin-top: 3rem;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 1.5rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #cbd5e1;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.8rem 1rem;
            border-radius: 8px;
            border: 1px solid #475569;
            background-color: #334155;
            color: #e2e8f0;
            font-size: 1rem;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background: linear-gradient(90deg, #10b981, #059669);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .submit-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(5, 150, 105, 0.4);
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #475569;
            margin: 1rem 0;
        }
        .star-rating i {
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: #fbbf24;
        }
        .long-tail-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 3rem 0;
        }
        .web-link {
            background-color: #1e293b;
            padding: 1rem;
            border-radius: 8px;
            border: 1px solid #334155;
            transition: all 0.3s ease;
        }
        .web-link:hover {
            border-color: #60a5fa;
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(96, 165, 250, 0.2);
        }
        .site-footer {
            background-color: #0f172a;
            border-top: 2px solid #334155;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #334155;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            .main-nav ul { gap: 1.2rem; }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .main-nav ul {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: #1e293b;
                flex-direction: column;
                padding: 1.5rem;
                border-top: 1px solid #334155;
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
            }
            .main-nav.active ul {
                display: flex;
            }
            .header-content {
                flex-wrap: wrap;
            }
            .hamburger.active span:nth-child(1) {
                transform: rotate(45deg) translate(5px, 5px);
            }
            .hamburger.active span:nth-child(2) {
                opacity: 0;
            }
            .hamburger.active span:nth-child(3) {
                transform: rotate(-45deg) translate(7px, -6px);
            }
        }
        @media (max-width: 480px) {
            .article-content, .sidebar, .user-interaction {
                padding: 1.5rem;
            }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .article-content, .sidebar, .user-interaction {
            animation: fadeIn 0.8s ease-out;
        }