* { 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-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        :root {
            --primary-blue: #1a5f7a;
            --secondary-blue: #2a9d8f;
            --accent-yellow: #e9c46a;
            --accent-orange: #f4a261;
            --accent-red: #e76f51;
            --light-bg: #edf2f4;
            --dark-text: #2b2d42;
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
            --border-radius: 12px;
            --container-width: 1200px;
        }
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 700; }
        .italic { font-style: italic; }
        .highlight { background-color: #fffacd; padding: 2px 5px; border-radius: 3px; }
        .site-header {
            background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 1px;
        }
        .my-logo i { color: var(--accent-yellow); }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition);
        }
        .main-nav a:hover { color: var(--accent-yellow); }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--accent-yellow);
            transition: width 0.3s;
        }
        .main-nav a:hover::after { width: 100%; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: var(--primary-blue);
            padding: 1rem;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active { display: flex; }
        .mobile-nav a {
            color: white;
            padding: 0.8rem;
            text-decoration: none;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            font-weight: 600;
        }
        .mobile-nav a:hover { background-color: rgba(255,255,255,0.1); }
        .breadcrumb {
            background-color: var(--light-bg);
            padding: 0.8rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #ddd;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 0.5rem;
            color: #777;
        }
        .breadcrumb a { color: var(--primary-blue); text-decoration: none; }
        .breadcrumb a:hover { text-decoration: underline; }
        .search-section {
            background: white;
            padding: 2rem 0;
            margin: 1rem 0;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            gap: 10px;
        }
        .search-input {
            flex-grow: 1;
            padding: 15px 20px;
            border: 2px solid #ddd;
            border-radius: 50px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--secondary-blue);
        }
        .search-btn {
            background: var(--secondary-blue);
            color: white;
            border: none;
            padding: 0 30px;
            border-radius: 50px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-btn:hover {
            background: var(--primary-blue);
            transform: translateY(-2px);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 30px 0;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        .article-content {
            background: white;
            padding: 40px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .article-header { margin-bottom: 2.5rem; }
        .article-header h1 {
            font-size: 2.8rem;
            color: var(--primary-blue);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .meta-info {
            display: flex;
            gap: 20px;
            color: #666;
            font-size: 0.95rem;
            border-bottom: 1px solid #eee;
            padding-bottom: 1rem;
            margin-bottom: 2rem;
        }
        .meta-info i { margin-right: 5px; color: var(--secondary-blue); }
        h2 {
            font-size: 2rem;
            color: var(--primary-blue);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--accent-yellow);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--secondary-blue);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--accent-orange);
            margin: 1.5rem 0 0.8rem;
        }
        h2, h3, h4 { scroll-margin-top: 100px; }
        .article-content p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            line-height: 1.8;
            text-align: justify;
        }
        .intro {
            font-size: 1.3rem;
            color: var(--dark-text);
            background: #e3f2fd;
            padding: 1.5rem;
            border-left: 5px solid var(--primary-blue);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            margin-bottom: 2.5rem;
        }
        blockquote {
            background: #f0f7ff;
            border-left: 6px solid var(--accent-orange);
            padding: 1.5rem 2rem;
            margin: 2rem 0;
            font-style: italic;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        blockquote p:last-child { margin-bottom: 0; }
        .stats-box {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            border: 2px dashed var(--secondary-blue);
        }
        .stats-box h4 { margin-top: 0; }
        .article-image {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 800px;
        }
        .article-image img {
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: transform 0.5s ease;
        }
        .article-image img:hover { transform: scale(1.02); }
        .image-caption {
            font-style: italic;
            color: #666;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .article-content a {
            color: var(--secondary-blue);
            text-decoration: none;
            border-bottom: 1px dotted currentColor;
            transition: var(--transition);
        }
        .article-content a:hover {
            color: var(--accent-red);
            border-bottom-style: solid;
        }
        ul, ol {
            margin-bottom: 1.5rem;
            padding-left: 2rem;
        }
        li { margin-bottom: 0.5rem; }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            margin-top: 0;
            color: var(--primary-blue);
            padding-bottom: 10px;
            border-bottom: 2px solid #eee;
            margin-bottom: 1.2rem;
        }
        .widget-links ul {
            list-style: none;
            padding-left: 0;
        }
        .widget-links li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px solid #f0f0f0;
        }
        .widget-links a {
            color: #555;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .widget-links a:hover {
            color: var(--secondary-blue);
            padding-left: 5px;
        }
        .widget-links i { color: var(--secondary-blue); }
        .interaction-forms {
            margin-top: 3rem;
            background: white;
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #444;
        }
        .form-input, .form-textarea {
            width: 100%;
            padding: 15px;
            border: 1px solid #ccc;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-input:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--secondary-blue);
            box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.2);
        }
        .form-textarea { min-height: 150px; resize: vertical; }
        .rating-stars {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            cursor: pointer;
            margin-bottom: 1rem;
        }
        .rating-stars .star {
            color: #ddd;
            transition: var(--transition);
        }
        .rating-stars .star:hover,
        .rating-stars .star.active { color: var(--accent-yellow); }
        .submit-btn {
            background: var(--secondary-blue);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .submit-btn:hover {
            background: var(--primary-blue);
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(0,0,0,0.1);
        }
        .site-footer {
            background: var(--dark-text);
            color: #ccc;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 3rem;
        }
        .footer-logo { font-size: 1.8rem; font-weight: 700; color: white; margin-bottom: 1rem; }
        .footer-links h4 { color: white; margin-bottom: 1.2rem; font-size: 1.2rem; }
        .footer-links ul { list-style: none; padding-left: 0; }
        .footer-links li { margin-bottom: 0.7rem; }
        .footer-links a {
            color: #aaa;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover { color: var(--accent-yellow); padding-left: 5px; }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin: 1.5rem 0;
            border-left: 4px solid var(--secondary-blue);
        }
        friend-link a {
            color: var(--accent-yellow);
            font-weight: 600;
            text-decoration: none;
        }
        friend-link a:hover { text-decoration: underline; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #888;
        }
        @media (max-width: 768px) {
            .main-nav { display: none; }
            .hamburger { display: block; }
            .article-content { padding: 25px; }
            .article-header h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .intro { font-size: 1.1rem; }
            .search-form { flex-direction: column; }
            .search-btn { justify-content: center; padding: 15px; }
        }