:root {
            --primary-color: #1a365d;
            --secondary-color: #d4af37;
            --accent-color: #c53030;
            --text-color: #2d3748;
            --light-bg: #f7fafc;
            --dark-bg: #2d3748;
            --border-color: #e2e8f0;
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --font-body: 'Georgia', 'Times New Roman', serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-body);
            color: var(--text-color);
            line-height: 1.8;
            background-color: #fff;
            max-width: 100vw;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: var(--primary-color);
            padding: 1rem 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;
        }
        .my-logo {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 1px;
            transition: color 0.3s ease;
        }
        .my-logo:hover {
            color: var(--secondary-color);
        }
        .my-logo span {
            color: var(--secondary-color);
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 0.5rem 0;
            position: relative;
            transition: color 0.3s ease;
        }
        .nav-desktop a:hover {
            color: var(--secondary-color);
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--secondary-color);
            transition: width 0.3s ease;
        }
        .nav-desktop a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            position: fixed;
            top: 80px;
            left: 0;
            width: 100%;
            background-color: var(--primary-color);
            flex-direction: column;
            padding: 2rem;
            gap: 1.5rem;
            display: none;
            box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
            z-index: 999;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: white;
            text-decoration: none;
            font-size: 1.2rem;
            padding: 0.8rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            transition: padding-left 0.3s ease;
        }
        .nav-mobile a:hover {
            padding-left: 10px;
            color: var(--secondary-color);
        }
        .breadcrumb {
            background-color: var(--light-bg);
            padding: 1rem 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            margin-right: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: #718096;
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 3rem 0;
            background-color: #fff;
        }
        .article-header {
            margin-bottom: 3rem;
            text-align: center;
            border-bottom: 3px solid var(--secondary-color);
            padding-bottom: 2rem;
        }
        h1 {
            font-family: var(--font-heading);
            font-size: 3.2rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.5rem;
            }
        }
        .article-meta {
            color: #718096;
            font-style: italic;
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 1rem;
        }
        .last-updated {
            background-color: #e6fffa;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            font-weight: 600;
            color: #234e52;
        }
        .content-section {
            margin-bottom: 4rem;
        }
        h2 {
            font-family: var(--font-heading);
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-top: 3rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px dashed var(--border-color);
        }
        h3 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            color: var(--dark-bg);
            margin-top: 2.5rem;
            margin-bottom: 1rem;
        }
        h4 {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            color: #4a5568;
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-style: italic;
        }
        p {
            margin-bottom: 1.8rem;
            font-size: 1.125rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--primary-color);
            line-height: 1.6;
            margin-bottom: 2.5rem;
            padding: 1.5rem;
            background-color: var(--light-bg);
            border-left: 5px solid var(--secondary-color);
            border-radius: 0 8px 8px 0;
        }
        .highlight-box {
            background-color: #fffaf0;
            border: 1px solid #fed7d7;
            border-left: 5px solid var(--accent-color);
            padding: 2rem;
            margin: 2.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .highlight-box h3 {
            color: var(--accent-color);
            margin-top: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 2.5rem auto;
            border-radius: 8px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            transition: transform 0.5s ease, box-shadow 0.5s ease;
        }
        img:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #718096;
            margin-top: -1.5rem;
            margin-bottom: 2.5rem;
            font-size: 0.95rem;
        }
        .content-section a {
            color: var(--primary-color);
            text-decoration: underline;
            text-decoration-color: var(--secondary-color);
            text-decoration-thickness: 2px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .content-section a:hover {
            color: var(--accent-color);
            text-decoration-color: var(--accent-color);
            background-color: #fef3c7;
            padding: 2px 4px;
            border-radius: 3px;
        }
        .interactive-features {
            background-color: var(--light-bg);
            padding: 3rem;
            border-radius: 12px;
            margin: 4rem 0;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }
        .feature-card {
            background-color: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .feature-card h3 {
            color: var(--primary-color);
            font-size: 1.5rem;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feature-card form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .feature-card input,
        .feature-card textarea,
        .feature-card select {
            padding: 0.75rem;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-family: var(--font-body);
            font-size: 1rem;
        }
        .feature-card button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0.9rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.3s ease;
            font-size: 1rem;
        }
        .feature-card button:hover {
            background-color: var(--secondary-color);
            color: var(--primary-color);
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 1.8rem;
            color: #d1d5db;
            cursor: pointer;
        }
        .star-rating .star {
            transition: color 0.2s ease;
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: #fbbf24;
        }
        .site-footer {
            background-color: var(--dark-bg);
            color: white;
            padding: 4rem 0 2rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        .footer-section h3 {
            color: var(--secondary-color);
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            border-bottom: 2px solid var(--secondary-color);
            padding-bottom: 0.5rem;
            display: inline-block;
        }
        .footer-section ul {
            list-style: none;
        }
        .footer-section ul li {
            margin-bottom: 0.8rem;
        }
        .footer-section a {
            color: #cbd5e0;
            text-decoration: none;
            transition: color 0.3s ease, padding-left 0.3s ease;
        }
        .footer-section a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 1.5rem;
            border-radius: 8px;
            margin-top: 2rem;
        }
        friend-link h4 {
            color: var(--secondary-color);
            margin-top: 0;
            font-style: normal;
        }
        .copyright {
            text-align: center;
            margin-top: 4rem;
            padding-top: 2rem;
            border-top: 1px solid #4a5568;
            color: #a0aec0;
            font-size: 0.9rem;
        }