* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #0d47a1;
            --secondary: #ff6f00;
            --accent: #4caf50;
            --dark: #1a237e;
            --light: #e3f2fd;
            --text: #212121;
            --text-light: #757575;
            --bg: #ffffff;
            --bg-alt: #f5f5f5;
            --border: #e0e0e0;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --radius: 8px;
            --transition: all 0.3s ease;
            --container-width: 1200px;
            --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            --font-heading: 'Arial Rounded MT Bold', 'Arial', sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            font-size: 18px;
        }
        h1, h2, h3, h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1rem;
            color: var(--dark);
        }
        h1 {
            font-size: 3.5rem;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 1.5rem;
            text-align: center;
            padding-bottom: 1rem;
            border-bottom: 3px solid var(--border);
        }
        h2 {
            font-size: 2.5rem;
            color: var(--primary);
            border-left: 5px solid var(--secondary);
            padding-left: 1rem;
            margin-top: 3rem;
        }
        h3 {
            font-size: 2rem;
            color: var(--dark);
            margin-top: 2.5rem;
        }
        h4 {
            font-size: 1.5rem;
            color: var(--text);
            margin-top: 2rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
            border-bottom: 1px dotted transparent;
        }
        a:hover {
            color: var(--secondary);
            border-bottom-color: var(--secondary);
        }
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--dark), var(--primary));
            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 {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 900;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--secondary);
        }
        .my-logo:hover {
            color: var(--light);
            transform: scale(1.02);
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
        }
        nav a:hover {
            background-color: rgba(255,255,255,0.15);
            transform: translateY(-2px);
        }
        .breadcrumb {
            background-color: var(--light);
            padding: 1rem 0;
            margin-bottom: 2rem;
            border-bottom: 1px solid var(--border);
        }
        .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: var(--text-light);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 0.5rem;
        }
        main {
            padding: 2rem 0;
            min-height: 80vh;
        }
        article {
            background-color: white;
            padding: 3rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin-bottom: 3rem;
        }
        .highlight-box {
            background: linear-gradient(135deg, var(--light), #e8f5e9);
            border-left: 5px solid var(--accent);
            padding: 2rem;
            margin: 2.5rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
            transition: var(--transition);
        }
        .highlight-box:hover {
            transform: translateX(10px);
            box-shadow: 0 6px 20px rgba(0,0,0,0.1);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 3rem 0;
        }
        .stat-card {
            background: white;
            padding: 1.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            text-align: center;
            transition: var(--transition);
            border-top: 4px solid var(--primary);
        }
        .stat-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.15);
        }
        .stat-card i {
            font-size: 2.5rem;
            color: var(--secondary);
            margin-bottom: 1rem;
        }
        .stat-card h3 {
            font-size: 1.8rem;
            color: var(--dark);
            margin-bottom: 0.5rem;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--radius);
            margin: 2.5rem auto;
            display: block;
            box-shadow: 0 8px 24px rgba(0,0,0,0.15);
            transition: var(--transition);
        }
        .article-image:hover {
            transform: scale(1.02);
            box-shadow: 0 12px 32px rgba(0,0,0,0.2);
        }
        .user-interaction {
            background-color: var(--bg-alt);
            padding: 3rem;
            border-radius: var(--radius);
            margin: 3rem 0;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }
        .form-control {
            width: 100%;
            padding: 1rem;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(13, 71, 161, 0.1);
        }
        .btn {
            background: linear-gradient(135deg, var(--primary), var(--dark));
            color: white;
            padding: 1rem 2rem;
            border: none;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn:hover {
            background: linear-gradient(135deg, var(--secondary), #e65100);
            transform: translateY(-3px);
            box-shadow: 0 6px 16px rgba(255, 111, 0, 0.3);
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #ffc107;
        }
        .star-rating input:checked ~ label {
            color: #ffc107;
        }
        footer {
            background: linear-gradient(135deg, var(--dark), #0c2461);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: white;
            border-left: 4px solid var(--secondary);
            padding-left: 1rem;
            margin-bottom: 1.5rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
            padding: 0.8rem;
            background-color: rgba(255,255,255,0.05);
            border-radius: var(--radius);
            transition: var(--transition);
        }
        friend-link:hover {
            background-color: rgba(255,255,255,0.1);
            transform: translateX(5px);
        }
        friend-link a {
            color: #bbdefb;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #b0bec5;
            font-size: 0.9rem;
        }
        .update-time {
            background-color: var(--light);
            padding: 1rem;
            border-radius: var(--radius);
            margin: 2rem 0;
            display: inline-flex;
            align-items: center;
            gap: 0.8rem;
            font-style: italic;
        }
        @media (max-width: 1024px) {
            h1 { font-size: 3rem; }
            h2 { font-size: 2.2rem; }
            h3 { font-size: 1.8rem; }
            article { padding: 2rem; }
        }
        @media (max-width: 768px) {
            body { font-size: 16px; }
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            .header-content {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
            }
            nav.active {
                max-height: 500px;
                margin-top: 1rem;
            }
            nav ul {
                flex-direction: column;
                gap: 0;
            }
            nav li {
                width: 100%;
            }
            nav a {
                display: block;
                padding: 1rem;
                border-radius: var(--radius);
                margin-bottom: 0.5rem;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
            article {
                padding: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            .stats-grid { grid-template-columns: 1fr; }
            .user-interaction { padding: 1.5rem; }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.8s ease forwards;
        }
        .content-section {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .content-section.visible {
            opacity: 1;
            transform: translateY(0);
        }
        strong {
            color: var(--dark);
            font-weight: 700;
        }
        em {
            color: var(--secondary);
            font-style: italic;
        }
        blockquote {
            border-left: 4px solid var(--accent);
            padding-left: 2rem;
            margin: 2rem 0;
            font-style: italic;
            color: var(--text-light);
            background-color: var(--bg-alt);
            padding: 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.8rem;
        }