* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #1e3a8a;
            --secondary-color: #dc2626;
            --accent-color: #16a34a;
            --text-dark: #1f2937;
            --text-light: #6b7280;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: var(--bg-light);
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary-color), #2563eb);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
            text-transform: uppercase;
            letter-spacing: 1px;
            transition: var(--transition);
        }
        .my-logo:hover {
            color: #93c5fd;
            transform: translateY(-2px);
        }
        .my-logo i {
            font-size: 1.8rem;
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.1); }
            100% { transform: scale(1); }
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-menu a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: var(--radius);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-menu a:hover {
            background: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
            background: none;
            border: none;
        }
        .breadcrumb {
            padding: 1rem 0;
            background: var(--bg-white);
            border-bottom: 1px solid #e5e7eb;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--text-light);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
        }
        .breadcrumb span {
            color: var(--text-dark);
            font-weight: 600;
        }
        main {
            padding: 2rem 0;
            background: var(--bg-white);
        }
        article {
            padding: 0 1rem;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 5px solid var(--secondary-color);
            padding-left: 1.5rem;
        }
        h2 {
            font-size: 2.2rem;
            color: var(--primary-color);
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e5e7eb;
        }
        h3 {
            font-size: 1.8rem;
            color: #374151;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #4b5563;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            color: var(--text-dark);
        }
        .highlight {
            background: linear-gradient(120deg, #fef3c7 0%, #fef3c7 100%);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .last-updated {
            background: var(--bg-light);
            padding: 1rem;
            border-radius: var(--radius);
            margin: 2rem 0;
            border-left: 4px solid var(--accent-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .last-updated i {
            color: var(--accent-color);
            font-size: 1.2rem;
        }
        .content-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--radius);
            margin: 2rem auto;
            display: block;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .content-img:hover {
            transform: scale(1.02);
            box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.2);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .feature-card {
            background: var(--bg-light);
            padding: 2rem;
            border-radius: var(--radius);
            transition: var(--transition);
            border: 1px solid #e5e7eb;
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
            border-color: var(--primary-color);
        }
        .feature-icon {
            font-size: 2.5rem;
            color: var(--secondary-color);
            margin-bottom: 1rem;
        }
        .related-links {
            background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
            padding: 2rem;
            border-radius: var(--radius);
            margin: 3rem 0;
        }
        .links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .link-card {
            background: white;
            padding: 1rem;
            border-radius: var(--radius);
            transition: var(--transition);
            border: 1px solid #bae6fd;
        }
        .link-card:hover {
            transform: translateX(5px);
            border-color: var(--primary-color);
            box-shadow: var(--shadow);
        }
        .link-card a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
            display: block;
            transition: var(--transition);
        }
        .link-card a:hover {
            color: var(--secondary-color);
        }
        .link-card i {
            color: var(--accent-color);
            margin-right: 8px;
        }
        .interactive-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .search-box, .comment-box, .rating-box {
            background: var(--bg-light);
            padding: 2rem;
            border-radius: var(--radius);
            border: 1px solid #e5e7eb;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--text-dark);
        }
        .form-control {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 2px solid #d1d5db;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }
        textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }
        .btn {
            background: linear-gradient(135deg, var(--primary-color), #3b82f6);
            color: white;
            border: none;
            padding: 0.75rem 2rem;
            border-radius: var(--radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 12px -3px rgba(37, 99, 235, 0.3);
            background: linear-gradient(135deg, #1e40af, #2563eb);
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: #d1d5db;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #fbbf24;
            transform: scale(1.2);
        }
        friend-link {
            display: block;
            background: var(--primary-color);
            color: white;
            padding: 3rem 0;
            margin-top: 3rem;
        }
        .friend-links-container {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            justify-content: center;
            align-items: center;
        }
        .friend-link-item {
            background: rgba(255, 255, 255, 0.1);
            padding: 1rem 2rem;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .friend-link-item:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }
        .friend-link-item a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        footer {
            background: #111827;
            color: white;
            padding: 3rem 0 1.5rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #374151;
            color: #9ca3af;
            font-size: 0.9rem;
        }
        @media (max-width: 1024px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            .container { padding: 0 15px; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: var(--primary-color);
                flex-direction: column;
                padding: 1rem;
                box-shadow: var(--shadow);
            }
            .nav-menu.active {
                display: flex;
            }
            .header-container {
                flex-wrap: wrap;
            }
            .my-logo { font-size: 1.8rem; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.8rem; }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .interactive-section {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.6rem; }
            .container { padding: 0 10px; }
            .feature-card, .search-box, .comment-box, .rating-box {
                padding: 1.5rem;
            }
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        :focus {
            outline: 3px solid var(--accent-color);
            outline-offset: 2px;
        }
        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: var(--secondary-color);
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            font-size: 1.5rem;
            box-shadow: var(--shadow);
            transition: var(--transition);
            opacity: 0;
            visibility: hidden;
            z-index: 999;
        }
        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            transform: translateY(-5px);
            background: #b91c1c;
        }