:root {
            --primary: #1a365d;
            --secondary: #c53030;
            --accent: #ecc94b;
            --light: #f7fafc;
            --dark: #2d3748;
            --gray: #a0aec0;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background-color: var(--light);
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary), #2a4365);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 900;
            text-transform: uppercase;
            letter-spacing: 1px;
            background: linear-gradient(to right, var(--accent), #fed7d7);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            transition: var(--transition);
        }
        .logo:hover {
            transform: scale(1.05);
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            margin-left: 2rem;
        }
        .nav-links a {
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0.8rem;
            border-radius: 6px;
            transition: var(--transition);
        }
        .nav-links a:hover,
        .nav-links a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: var(--accent);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--accent);
        }
        .breadcrumb {
            background-color: #edf2f7;
            padding: 0.8rem 0;
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: var(--gray);
        }
        .search-bar {
            background: white;
            padding: 2.5rem 0;
            text-align: center;
            margin: 1.5rem 0;
            border-radius: 12px;
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.06);
        }
        .search-bar h2 {
            margin-bottom: 1.5rem;
            color: var(--primary);
        }
        .search-form {
            display: flex;
            max-width: 700px;
            margin: 0 auto;
        }
        .search-input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: 2px solid var(--primary);
            border-radius: 8px 0 0 8px;
            font-size: 1.1rem;
            outline: none;
        }
        .search-btn {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 0 2rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: #9b2c2c;
        }
        main {
            padding: 2rem 0;
        }
        article {
            background: white;
            border-radius: 15px;
            padding: 3rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            margin-bottom: 3rem;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2.2rem;
            color: var(--secondary);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--accent);
        }
        h3 {
            font-size: 1.8rem;
            color: var(--primary);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: var(--dark);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.15rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.3rem;
            font-weight: 500;
            color: var(--primary);
            background: #fefcbf;
            padding: 1.5rem;
            border-left: 5px solid var(--accent);
            border-radius: 0 10px 10px 0;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background: linear-gradient(120deg, #fed7d7 0%, #fed7d7 100%);
            background-repeat: no-repeat;
            background-size: 100% 0.4em;
            background-position: 0 88%;
            font-weight: 700;
        }
        em {
            font-style: italic;
            color: var(--secondary);
        }
        strong {
            font-weight: 800;
            color: var(--primary);
        }
        .quote {
            border-left: 4px solid var(--secondary);
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #4a5568;
            background: #f7fafc;
            padding: 1.5rem;
            border-radius: 0 10px 10px 0;
        }
        .image-container {
            margin: 3rem auto;
            text-align: center;
            max-width: 900px;
        }
        .article-img {
            width: 100%;
            border-radius: 15px;
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
            transition: var(--transition);
        }
        .article-img:hover {
            transform: translateY(-5px);
            box-shadow: 0 18px 35px rgba(0, 0, 0, 0.2);
        }
        .img-caption {
            margin-top: 0.8rem;
            font-size: 0.95rem;
            color: var(--gray);
            font-style: italic;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.8rem;
            font-size: 1.1rem;
        }
        .stats-box {
            background: linear-gradient(135deg, var(--primary), #2d3748);
            color: white;
            padding: 2.5rem;
            border-radius: 15px;
            margin: 2.5rem 0;
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
        }
        .stats-title {
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
            text-align: center;
            color: var(--accent);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .stat-item {
            text-align: center;
            padding: 1.5rem;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 10px;
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--accent);
            display: block;
            line-height: 1;
        }
        .stat-label {
            font-size: 1.2rem;
            margin-top: 0.8rem;
        }
        .interactive-section {
            background: #f0fff4;
            border-radius: 15px;
            padding: 2.5rem;
            margin: 3rem 0;
            border: 2px dashed #38a169;
        }
        .interactive-title {
            display: flex;
            align-items: center;
            color: #22543d;
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
        }
        .interactive-title i {
            margin-right: 15px;
            font-size: 2rem;
        }
        .user-feedback {
            margin-top: 4rem;
            padding-top: 3rem;
            border-top: 2px solid var(--gray);
        }
        .feedback-title {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 2rem;
            text-align: center;
        }
        .rating-section {
            background: #fffaf0;
            padding: 2rem;
            border-radius: 12px;
            margin-bottom: 3rem;
            text-align: center;
        }
        .stars {
            font-size: 2.5rem;
            color: #ecc94b;
            margin: 1.5rem 0;
            cursor: pointer;
        }
        .star:hover {
            transform: scale(1.2);
        }
        .rating-form {
            display: flex;
            flex-direction: column;
            max-width: 500px;
            margin: 0 auto;
        }
        .rating-form input,
        .rating-form textarea {
            padding: 1rem;
            margin-bottom: 1.2rem;
            border: 1px solid #cbd5e0;
            border-radius: 8px;
            font-size: 1rem;
        }
        .rating-btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 1rem;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-btn:hover {
            background-color: #2c5282;
        }
        .comment-section {
            background: #f7fafc;
            padding: 2rem;
            border-radius: 12px;
        }
        .comment-form textarea {
            width: 100%;
            padding: 1.2rem;
            border: 2px solid #cbd5e0;
            border-radius: 8px;
            font-size: 1.1rem;
            min-height: 150px;
            margin-bottom: 1.2rem;
        }
        .comment-form button {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .comment-form button:hover {
            background-color: #9b2c2c;
        }
        .longtail-links {
            background: #2d3748;
            padding: 3rem 0;
            margin-top: 3rem;
        }
        .web-link {
            display: inline-block;
            background: rgba(255, 255, 255, 0.05);
            color: #cbd5e0;
            padding: 0.8rem 1.5rem;
            margin: 0.7rem;
            border-radius: 30px;
            transition: var(--transition);
            font-size: 1.05rem;
        }
        .web-link:hover {
            background: var(--accent);
            color: var(--primary);
            transform: translateY(-3px);
        }
        .links-container {
            text-align: center;
        }
        footer {
            background: var(--primary);
            color: white;
            padding: 3rem 0 1.5rem;
            text-align: center;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        .copyright {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #4a5568;
            width: 100%;
            font-size: 0.95rem;
            color: #a0aec0;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            article { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--primary);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem 0;
                box-shadow: 0 10px 15px rgba(0,0,0,0.2);
            }
            .nav-links.active { display: flex; }
            .nav-links li { margin: 0.8rem 0; text-align: center; }
            .hamburger { display: block; }
            .search-form { flex-direction: column; }
            .search-input { border-radius: 8px; margin-bottom: 10px; }
            .search-btn { border-radius: 8px; padding: 1rem; }
            .stats-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 576px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            article { padding: 1.5rem; }
            .intro { font-size: 1.15rem; }
            p, li { font-size: 1.05rem; }
        }