* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Nirmala UI', Arial, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.7;
            font-size: 18px;
            max-width: 100vw;
            overflow-x: hidden;
        }
        h1, h2, h3, h4 {
            color: #2c3e50;
            margin-top: 1.5em;
            margin-bottom: 0.7em;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            border-bottom: 4px solid #3498db;
            padding-bottom: 15px;
            text-align: center;
        }
        h2 {
            font-size: 2.2rem;
            color: #2980b9;
            border-left: 6px solid #e74c3c;
            padding-left: 15px;
        }
        h3 {
            font-size: 1.8rem;
            color: #16a085;
        }
        p {
            margin-bottom: 1.5em;
            text-align: justify;
            hyphens: auto;
        }
        a {
            color: #2980b9;
            text-decoration: none;
            transition: color 0.3s;
        }
        a:hover {
            color: #e74c3c;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center {
            text-align: center;
        }
        .bold {
            font-weight: 700;
            color: #2c3e50;
        }
        .highlight {
            background-color: #fffacd;
            padding: 0 5px;
            border-radius: 3px;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        header {
            background: linear-gradient(135deg, #1a2980, #26d0ce);
            color: white;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
        }
        .logo i {
            margin-right: 10px;
            color: #f1c40f;
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
        }
        .desktop-nav li {
            margin-left: 30px;
        }
        .desktop-nav a {
            color: white;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 12px;
            border-radius: 5px;
            transition: background 0.3s;
        }
        .desktop-nav a:hover {
            background-color: rgba(255,255,255,0.2);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background-color: #1a2980;
            flex-direction: column;
            padding: 20px;
            box-shadow: 0 5px 10px rgba(0,0,0,0.2);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: white;
            padding: 15px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            font-size: 1.2rem;
        }
        .mobile-nav a:hover {
            background-color: rgba(255,255,255,0.1);
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #ecf0f1;
            font-size: 0.95rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin: 0 10px;
            color: #7f8c8d;
        }
        .breadcrumb a {
            color: #3498db;
        }
        .search-section {
            background-color: #fff;
            padding: 30px 0;
            margin: 20px 0;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex-grow: 1;
            padding: 15px 20px;
            border: 2px solid #3498db;
            border-radius: 50px 0 0 50px;
            font-size: 1.1rem;
            outline: none;
        }
        .search-button {
            background: linear-gradient(to right, #3498db, #2980b9);
            color: white;
            border: none;
            padding: 0 30px;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            transition: background 0.3s;
        }
        .search-button:hover {
            background: linear-gradient(to right, #2980b9, #1c5a7a);
        }
        main {
            padding: 30px 0;
            background-color: white;
            border-radius: 10px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            margin-bottom: 30px;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 2px dashed #ecf0f1;
            color: #7f8c8d;
            font-size: 0.95rem;
        }
        .featured-image {
            margin: 30px 0;
            position: relative;
        }
        .featured-image figcaption {
            text-align: center;
            font-style: italic;
            color: #7f8c8d;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .content-block {
            margin-bottom: 40px;
            padding: 0 10px;
        }
        .tip-box {
            background-color: #e8f4fc;
            border-left: 5px solid #3498db;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .tip-box h4 {
            color: #2c3e50;
            margin-top: 0;
        }
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin: 30px 0;
        }
        .strategy-card {
            background: #f9f9f9;
            padding: 25px;
            border-radius: 10px;
            border-top: 5px solid #2ecc71;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .strategy-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .strategy-card h4 {
            color: #27ae60;
            margin-bottom: 15px;
        }
        .user-interaction {
            background-color: #f8f9fa;
            padding: 40px 0;
            margin-top: 50px;
            border-radius: 10px;
            border: 1px solid #e9ecef;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        .comment-form, .rating-form {
            background: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #2c3e50;
        }
        input, textarea, select {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #bdc3c7;
            border-radius: 5px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            border-color: #3498db;
            outline: none;
        }
        .submit-button {
            background: linear-gradient(to right, #e74c3c, #c0392b);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            transition: background 0.3s;
            display: block;
            width: 100%;
        }
        .submit-button:hover {
            background: linear-gradient(to right, #c0392b, #a93226);
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin: 20px 0;
            font-size: 2rem;
            color: #f1c40f;
        }
        .star-rating i {
            cursor: pointer;
            transition: transform 0.2s;
        }
        .star-rating i:hover {
            transform: scale(1.2);
        }
        .footer-links {
            background-color: #2c3e50;
            padding: 40px 0;
            margin-top: 50px;
        }
        .web-link {
            background-color: #34495e;
            margin-bottom: 15px;
            padding: 15px 20px;
            border-radius: 5px;
            transition: background 0.3s;
        }
        .web-link:hover {
            background-color: #3d566e;
        }
        .web-link a {
            color: #ecf0f1;
            font-size: 1.1rem;
            display: block;
        }
        .web-link a:hover {
            color: #3498db;
        }
        footer {
            background-color: #1a252f;
            color: #bdc3c7;
            padding: 30px 0;
            text-align: center;
        }
        .copyright {
            font-size: 0.9rem;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #34495e;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.9rem; }
            h3 { font-size: 1.6rem; }
            .desktop-nav { display: none; }
            .hamburger { display: block; }
            .header-container { padding: 0 15px; }
        }
        @media (max-width: 768px) {
            body { font-size: 16px; }
            h1 { font-size: 2rem; }
            .search-form { flex-direction: column; }
            .search-input { border-radius: 50px; margin-bottom: 10px; }
            .search-button { border-radius: 50px; padding: 15px; }
            .strategy-grid { grid-template-columns: 1fr; }
            .interaction-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            .logo a { font-size: 1.8rem; }
            .article-meta { flex-direction: column; align-items: flex-start; }
            .article-meta > div { margin-bottom: 10px; }
        }