* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 700; }
        .highlight { background-color: #fffacd; padding: 2px 5px; border-radius: 3px; }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        .site-header {
            background: linear-gradient(90deg, #2c3e50 0%, #4a6491 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            color: #ffcc00;
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            font-family: 'Arial Black', sans-serif;
            letter-spacing: -1px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .logo a:hover { color: #fff; transition: color 0.3s; }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
        }
        .nav-desktop a {
            color: #ecf0f1;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #ffcc00;
            transition: width 0.3s ease;
        }
        .nav-desktop a:hover::after { width: 100%; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: #2c3e50;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 5px 10px rgba(0,0,0,0.2);
        }
        .nav-mobile.active { display: flex; }
        .nav-mobile a {
            color: #ecf0f1;
            padding: 0.8rem 1rem;
            text-decoration: none;
            border-bottom: 1px solid #3a506b;
            font-weight: 600;
        }
        .nav-mobile a:last-child { border-bottom: none; }
        .nav-mobile a:hover { background: #3a506b; }
        .breadcrumb {
            background: #f8f9fa;
            padding: 0.8rem 20px;
            font-size: 0.9rem;
            border-bottom: 1px solid #dee2e6;
        }
        .breadcrumb a {
            color: #4a6491;
            text-decoration: none;
        }
        .breadcrumb a:hover { text-decoration: underline; }
        .search-section {
            background: #fff;
            padding: 2rem 0;
            border-bottom: 1px solid #ddd;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .search-input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1.1rem;
            outline: none;
        }
        .search-button {
            background: linear-gradient(90deg, #ff7e5f, #feb47b);
            color: white;
            border: none;
            padding: 0 2rem;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            transition: background 0.3s;
        }
        .search-button:hover { background: linear-gradient(90deg, #feb47b, #ff7e5f); }
        .main-content {
            padding: 3rem 0;
            background: white;
            box-shadow: 0 0 30px rgba(0,0,0,0.05);
            border-radius: 10px;
            margin: 2rem auto;
            max-width: 1100px;
        }
        .article-content { padding: 0 2rem; }
        h1 {
            font-size: 2.8rem;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
        }
        h2 {
            font-size: 2.2rem;
            color: #4a6491;
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #ffcc00;
        }
        h3 {
            font-size: 1.8rem;
            color: #5d7ba3;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #6b8cbc;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: #2c3e50;
            font-weight: 500;
            line-height: 1.7;
            margin-bottom: 2rem;
        }
        .intro-box {
            background: #f0f8ff;
            border-left: 5px solid #4a6491;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .feature-img {
            margin: 2.5rem auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
            max-width: 900px;
        }
        .feature-img figcaption {
            text-align: center;
            font-style: italic;
            padding: 0.8rem;
            color: #666;
            background: #f9f9f9;
        }
        ul, ol { padding-left: 2rem; margin-bottom: 1.5rem; }
        li { margin-bottom: 0.5rem; }
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 2rem 0;
        }
        .strategy-card {
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 10px;
            border-top: 5px solid #ffcc00;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .strategy-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .interactive-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 3rem 2rem;
            border-radius: 15px;
            margin: 3rem 0;
            text-align: center;
        }
        .rating-form, .comment-form {
            max-width: 600px;
            margin: 2rem auto;
            background: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }
        .form-group { margin-bottom: 1.5rem; text-align: left; }
        label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: #333; }
        input, select, textarea {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 5px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, select:focus, textarea:focus {
            border-color: #667eea;
            outline: none;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }
        .submit-btn {
            background: linear-gradient(90deg, #ff7e5f, #feb47b);
            color: white;
            border: none;
            padding: 1rem 2rem;
            font-size: 1.1rem;
            border-radius: 50px;
            cursor: pointer;
            font-weight: 700;
            transition: all 0.3s;
        }
        .submit-btn:hover {
            transform: scale(1.05);
            box-shadow: 0 5px 15px rgba(255, 126, 95, 0.4);
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active { color: #ffcc00; }
        .longtail-links {
            background: #f8f9fa;
            padding: 2rem;
            margin-top: 3rem;
            border-top: 1px solid #dee2e6;
            border-bottom: 1px solid #dee2e6;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
        }
        .web-link {
            background: white;
            padding: 1rem;
            border-radius: 5px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
        }
        .web-link a {
            color: #4a6491;
            text-decoration: none;
            font-weight: 600;
            display: block;
            padding: 0.5rem;
            border-left: 4px solid #ffcc00;
            transition: all 0.3s;
        }
        .web-link a:hover {
            background: #f0f8ff;
            padding-left: 1rem;
            color: #2c3e50;
        }
        .site-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            text-align: center;
        }
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .copyright {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #3a506b;
            font-size: 0.9rem;
            color: #bdc3c7;
        }
        @media (max-width: 768px) {
            .container { padding: 0 15px; }
            .main-content { padding: 2rem 0; margin: 1rem auto; }
            .article-content { padding: 0 1rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .strategy-grid { grid-template-columns: 1fr; }
            .interactive-section { padding: 2rem 1rem; }
            .rating-form, .comment-form { padding: 1.5rem; }
            .web-links-container { grid-template-columns: 1fr; }
        }