:root {
            --primary-color: #0047AB;
            --secondary-color: #FF6B35;
            --accent-color: #34C759;
            --dark-color: #1D1D1F;
            --light-color: #F5F5F7;
            --text-color: #333333;
            --gray-light: #D1D1D6;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: var(--light-color);
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 20px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--secondary-color);
        }
        .desktop-nav ul {
            display: flex;
            gap: 2rem;
        }
        .desktop-nav a {
            font-weight: 600;
            color: var(--dark-color);
            transition: var(--transition);
            padding: 0.5rem 0;
            position: relative;
        }
        .desktop-nav a:hover {
            color: var(--primary-color);
        }
        .desktop-nav a:after {
            content: '';
            position: absolute;
            width: 0;
            height: 3px;
            background: var(--secondary-color);
            left: 0;
            bottom: 0;
            transition: var(--transition);
        }
        .desktop-nav a:hover:after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark-color);
        }
        .mobile-nav {
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background: white;
            box-shadow: var(--shadow);
            padding: 2rem;
            transform: translateY(-100%);
            opacity: 0;
            transition: var(--transition);
            z-index: 999;
        }
        .mobile-nav.active {
            transform: translateY(0);
            opacity: 1;
        }
        .mobile-nav ul {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .mobile-nav a {
            font-weight: 600;
            font-size: 1.1rem;
            display: block;
            padding: 0.5rem 0;
            border-bottom: 1px solid var(--gray-light);
        }
        .breadcrumb {
            padding: 1rem 20px;
            background-color: #f8f9fa;
            font-size: 0.9rem;
            border-bottom: 1px solid #eee;
        }
        .breadcrumb a {
            color: var(--primary-color);
        }
        .breadcrumb span {
            color: var(--gray-light);
            margin: 0 5px;
        }
        main {
            padding: 2rem 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .content {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--dark-color);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        .meta-info {
            display: flex;
            gap: 1.5rem;
            color: #666;
            font-size: 0.9rem;
            margin-bottom: 2rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid var(--gray-light);
        }
        .meta-info i {
            margin-right: 0.5rem;
            color: var(--primary-color);
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-color);
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--secondary-color);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--dark-color);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.2rem;
            color: #555;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            color: var(--dark-color);
            font-weight: 500;
            background: #f0f7ff;
            padding: 1.5rem;
            border-left: 4px solid var(--primary-color);
            border-radius: 0 8px 8px 0;
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #fff9e6;
            border-left: 4px solid #FFD60A;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .highlight p {
            margin-bottom: 0;
        }
        .img-container {
            margin: 2.5rem 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            position: relative;
        }
        .img-container img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .img-container:hover img {
            transform: scale(1.03);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.8rem;
            font-size: 0.9rem;
        }
        blockquote {
            font-style: italic;
            color: #555;
            border-left: 4px solid var(--accent-color);
            padding-left: 1.5rem;
            margin: 2rem 0;
            background: #f9f9f9;
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        .links-box {
            background: #f8f9fa;
            border: 1px solid #e9ecef;
            border-radius: 8px;
            padding: 1.5rem;
            margin: 2rem 0;
        }
        .links-box h4 {
            color: var(--primary-color);
            margin-top: 0;
        }
        .links-box ul {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .links-box li a {
            background: white;
            padding: 0.5rem 1rem;
            border-radius: 50px;
            border: 1px solid #ddd;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
        }
        .links-box li a:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: translateY(-3px);
        }
        .action-buttons {
            display: flex;
            gap: 1rem;
            margin: 2rem 0;
            flex-wrap: wrap;
        }
        .btn {
            padding: 0.8rem 1.8rem;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-primary {
            background: var(--primary-color);
            color: white;
        }
        .btn-primary:hover {
            background: #003580;
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0,71,171,0.2);
        }
        .btn-secondary {
            background: var(--secondary-color);
            color: white;
        }
        .btn-secondary:hover {
            background: #e55a2b;
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(255,107,53,0.2);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background: white;
            border-radius: 12px;
            padding: 1.8rem;
            box-shadow: var(--shadow);
        }
        .widget h3 {
            font-size: 1.3rem;
            margin-top: 0;
            color: var(--primary-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .widget h3 i {
            color: var(--secondary-color);
        }
        .search-box {
            display: flex;
            margin-top: 1rem;
        }
        .search-box input {
            flex: 1;
            padding: 0.9rem 1rem;
            border: 1px solid var(--gray-light);
            border-right: none;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
        }
        .search-box button {
            background: var(--primary-color);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: #003580;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 1.8rem;
            color: #FFD60A;
            margin: 1rem 0;
        }
        .stars i {
            cursor: pointer;
            transition: var(--transition);
            margin: 0 2px;
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            border: 1px solid var(--gray-light);
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            margin-top: 1rem;
            resize: vertical;
            min-height: 120px;
        }
        .comment-form button {
            width: 100%;
            margin-top: 1rem;
        }
        footer {
            background: var(--dark-color);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            margin-bottom: 1rem;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
        }
        .footer-col h4 {
            color: white;
            margin-bottom: 1.2rem;
            font-size: 1.1rem;
        }
        .footer-col ul li {
            margin-bottom: 0.8rem;
        }
        .footer-col a {
            color: #ccc;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 1rem;
            border-radius: 8px;
            margin-top: 1rem;
            border: 1px solid rgba(255,255,255,0.1);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .content, .widget {
                padding: 1.5rem;
            }
            .header-container, .breadcrumb {
                padding: 1rem 15px;
            }
            .footer-container {
                flex-direction: column;
            }
        }