* { 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: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
        }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        main { padding: 30px 0; background-color: #fff; border-radius: 12px; box-shadow: 0 5px 25px rgba(0, 0, 0, 0.05); margin-top: 20px; }
        .site-header { background: linear-gradient(90deg, #1a5f7a, #2a9d8f); 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; }
        .my-logo a { font-size: 2.2rem; font-weight: 800; color: #fff; text-decoration: none; letter-spacing: -1px; text-shadow: 2px 2px 4px rgba(0,0,0,0.3); background: linear-gradient(to right, #ffd166, #ff9e6d); -webkit-background-clip: text; -webkit-text-fill-color: transparent; transition: all 0.3s ease; }
        .my-logo a:hover { transform: scale(1.03); text-shadow: 3px 3px 6px rgba(0,0,0,0.4); }
        .main-nav ul { display: flex; list-style: none; gap: 2rem; }
        .main-nav a { color: #e9f5f3; text-decoration: none; font-weight: 600; padding: 8px 12px; border-radius: 6px; transition: all 0.3s ease; }
        .main-nav a:hover, .main-nav a:focus { background-color: rgba(255, 255, 255, 0.15); color: #ffd166; transform: translateY(-2px); }
        .hamburger { display: none; font-size: 1.8rem; background: none; border: none; color: white; cursor: pointer; }
        .breadcrumb { padding: 15px 0; font-size: 0.9rem; background-color: #f0f8ff; border-radius: 8px; margin-bottom: 20px; }
        .breadcrumb a { color: #2a9d8f; text-decoration: none; }
        .breadcrumb a:hover { text-decoration: underline; }
        .search-box { background: #e3f2fd; padding: 25px; border-radius: 10px; margin: 30px 0; text-align: center; }
        .search-form { display: flex; max-width: 600px; margin: 0 auto; }
        .search-input { flex-grow: 1; padding: 15px; border: 2px solid #2a9d8f; border-radius: 8px 0 0 8px; font-size: 1rem; }
        .search-btn { background: #2a9d8f; color: white; border: none; padding: 0 25px; border-radius: 0 8px 8px 0; cursor: pointer; font-size: 1rem; transition: background 0.3s; }
        .search-btn:hover { background: #1a5f7a; }
        .article-content { padding: 0 30px; }
        h1 { color: #1a5f7a; font-size: 3rem; margin-bottom: 1.5rem; border-left: 6px solid #ff9e6d; padding-left: 20px; }
        h2 { color: #2a9d8f; font-size: 2.2rem; margin: 2.5rem 0 1.2rem; padding-bottom: 8px; border-bottom: 2px dashed #cdeae6; }
        h3 { color: #264653; font-size: 1.7rem; margin: 2rem 0 1rem; }
        h4 { color: #1a5f7a; font-size: 1.4rem; margin: 1.8rem 0 0.8rem; }
        p { margin-bottom: 1.5rem; font-size: 1.1rem; text-align: justify; }
        .lead { font-size: 1.3rem; font-weight: 500; color: #444; background: #f8f9fa; padding: 20px; border-radius: 10px; border-left: 5px solid #2a9d8f; }
        .highlight { background: linear-gradient(120deg, #ffd16630 0%, #ffd16630 100%); padding: 2px 6px; border-radius: 4px; font-weight: 600; }
        blockquote { font-style: italic; border-left: 4px solid #ff9e6d; padding-left: 25px; margin: 2rem 0; color: #555; background-color: #f9f9f9; padding: 20px; border-radius: 0 10px 10px 0; }
        .article-img { margin: 2.5rem auto; border-radius: 12px; overflow: hidden; box-shadow: 0 10px 30px rgba(0,0,0,0.1); max-width: 900px; }
        .img-caption { text-align: center; font-style: italic; color: #666; padding: 10px; font-size: 0.95rem; }
        .content-link { color: #1a5f7a; text-decoration: none; font-weight: 600; border-bottom: 2px dotted #2a9d8f; transition: all 0.2s; }
        .content-link:hover { color: #ff9e6d; border-bottom-style: solid; background-color: #f0f8ff; }
        .interactive-section { background: #f8f9fa; border-radius: 12px; padding: 30px; margin: 40px 0; border: 1px solid #e9ecef; }
        .interactive-section h3 { margin-top: 0; }
        .form-group { margin-bottom: 20px; }
        label { display: block; margin-bottom: 8px; font-weight: 600; color: #444; }
        input, textarea, select { width: 100%; padding: 12px; border: 1px solid #ced4da; border-radius: 8px; font-size: 1rem; font-family: inherit; }
        textarea { min-height: 120px; resize: vertical; }
        .submit-btn { background: linear-gradient(90deg, #2a9d8f, #1a5f7a); color: white; border: none; padding: 15px 30px; border-radius: 8px; font-size: 1.1rem; font-weight: 600; cursor: pointer; transition: transform 0.3s, box-shadow 0.3s; }
        .submit-btn:hover { transform: translateY(-3px); box-shadow: 0 7px 15px rgba(42, 157, 143, 0.4); }
        .rating { display: flex; gap: 10px; align-items: center; margin: 20px 0; }
        .star { font-size: 2rem; color: #ddd; cursor: pointer; transition: color 0.2s; }
        .star:hover, .star.active { color: #ffd166; }
        .site-footer { background: #264653; color: #e9f5f3; padding: 40px 0 20px; margin-top: 60px; }
        .footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }
        .footer-section h4 { color: #ffd166; margin-bottom: 20px; }
        .friend-links { display: flex; flex-direction: column; gap: 10px; }
        friend-link { display: block; }
        friend-link a { color: #a8dadc; text-decoration: none; padding: 8px 0; border-bottom: 1px dashed #457b9d; transition: all 0.3s; }
        friend-link a:hover { color: #ffd166; padding-left: 10px; border-bottom-color: #ffd166; }
        .copyright { text-align: center; padding-top: 30px; margin-top: 30px; border-top: 1px solid #457b9d; color: #a8dadc; font-size: 0.9rem; }
        @media (max-width: 992px) {
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
        }
        @media (max-width: 768px) {
            .header-content { flex-wrap: wrap; }
            .hamburger { display: block; }
            .main-nav { width: 100%; display: none; margin-top: 15px; }
            .main-nav.active { display: block; }
            .main-nav ul { flex-direction: column; gap: 0; }
            .main-nav li { border-bottom: 1px solid rgba(255,255,255,0.1); }
            .main-nav a { display: block; padding: 15px; }
            .article-content { padding: 0 15px; }
            .search-form { flex-direction: column; }
            .search-input, .search-btn { width: 100%; border-radius: 8px; margin-bottom: 10px; }
        }