* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #FF6B35;
            --secondary: #004E89;
            --accent: #00A5CF;
            --dark: #1A1A2E;
            --light: #F8F9FA;
            --gray: #6C757D;
            --success: #28A745;
            --warning: #FFC107;
            --transition: all 0.3s ease;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --border-radius: 12px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background-color: var(--light);
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mb-3 { margin-bottom: 3rem; }
        .mt-3 { margin-top: 3rem; }
        .py-2 { padding-top: 2rem; padding-bottom: 2rem; }
        .py-3 { padding-top: 3rem; padding-bottom: 3rem; }
        .d-flex { display: flex; }
        .flex-wrap { flex-wrap: wrap; }
        .justify-between { justify-content: space-between; }
        .align-center { align-items: center; }
        .grid { display: grid; }
        .site-header {
            background: linear-gradient(135deg, var(--dark) 0%, var(--secondary) 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--primary);
        }
        .my-logo:hover {
            color: var(--accent);
        }
        .breadcrumb {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 0.8rem 1.5rem;
            border-radius: 50px;
            margin-top: 1rem;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--accent);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            margin: 0 8px;
            color: var(--gray);
        }
        .main-nav ul {
            display: flex;
            gap: 2rem;
        }
        .nav-link {
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
        }
        .nav-link:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .hero {
            background: linear-gradient(rgba(26, 26, 46, 0.9), rgba(0, 78, 137, 0.9)), url('https://images.unsplash.com/photo-1598546722978-5b4f5c4cd2f5?ixlib=rb-4.0.3') center/cover;
            color: white;
            padding: 5rem 0;
            text-align: center;
            border-bottom: 5px solid var(--primary);
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            color: #E9ECEF;
        }
        .search-box {
            max-width: 600px;
            margin: 2rem auto;
            position: relative;
        }
        .search-box input {
            width: 100%;
            padding: 1.2rem 1.5rem;
            border-radius: 50px;
            border: none;
            font-size: 1.1rem;
            box-shadow: var(--shadow);
        }
        .search-box button {
            position: absolute;
            right: 8px;
            top: 8px;
            background: var(--primary);
            color: white;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 50px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: #e05a2b;
            transform: scale(1.05);
        }
        .main-content {
            padding: 3rem 0;
            background: white;
        }
        .content-grid {
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        article {
            font-size: 1.1rem;
        }
        article h1 {
            color: var(--secondary);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        article h2 {
            color: var(--primary);
            font-size: 2.2rem;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--accent);
        }
        article h3 {
            color: var(--secondary);
            font-size: 1.8rem;
            margin: 2rem 0 1rem;
        }
        article h4 {
            color: var(--dark);
            font-size: 1.4rem;
            margin: 1.5rem 0 0.8rem;
        }
        article p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        article strong {
            color: var(--primary);
            font-weight: 700;
        }
        .highlight-box {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            border-left: 5px solid var(--accent);
            padding: 1.8rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            box-shadow: var(--shadow);
        }
        .quick-links-section {
            background: var(--light);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 2.5rem 0;
            border: 2px dashed var(--secondary);
        }
        .quick-links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-top: 1.5rem;
        }
        .quick-link-card {
            background: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .quick-link-card:hover {
            transform: translateY(-10px);
            border-color: var(--primary);
            box-shadow: 0 10px 20px rgba(255, 107, 53, 0.2);
        }
        .quick-link-card i {
            color: var(--primary);
            font-size: 2rem;
            margin-bottom: 1rem;
        }
        .featured-image {
            margin: 2.5rem 0;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            padding: 0.8rem;
            background-color: #f8f9fa;
            font-size: 0.95rem;
        }
        .sidebar {
            background: var(--light);
            padding: 2rem;
            border-radius: var(--border-radius);
            height: fit-content;
            position: sticky;
            top: 120px;
            box-shadow: var(--shadow);
        }
        .sidebar h3 {
            color: var(--secondary);
            margin-bottom: 1.5rem;
            padding-bottom: 0.8rem;
            border-bottom: 2px solid var(--primary);
        }
        .update-time {
            background: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin-bottom: 2rem;
            border-left: 4px solid var(--success);
        }
        .update-time i {
            color: var(--success);
            margin-right: 10px;
        }
        .interactive-section {
            background: white;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
            box-shadow: var(--shadow);
            border: 1px solid #dee2e6;
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--warning);
        }
        .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 #ced4da;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            border-color: var(--accent);
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 165, 207, 0.25);
        }
        .btn {
            background: var(--primary);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 1.1rem;
        }
        .btn:hover {
            background: #e05a2b;
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(255, 107, 53, 0.3);
        }
        .comments-list {
            margin-top: 2.5rem;
        }
        .comment {
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin-bottom: 1.5rem;
            border-left: 4px solid var(--accent);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 0.8rem;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .site-footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 700;
            color: white;
            margin-bottom: 1rem;
        }
        .footer-links h4 {
            color: var(--primary);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 1rem 1.5rem;
            border-radius: var(--border-radius);
            margin: 0.5rem 0;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--accent);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #adb5bd;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                margin-top: 3rem;
            }
            .hero h1 {
                font-size: 2.8rem;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                background: var(--dark);
                padding: 2rem;
                transition: var(--transition);
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
                z-index: 999;
            }
            .main-nav.active {
                left: 0;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1rem;
            }
            .hamburger {
                display: block;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .breadcrumb {
                width: 100%;
                order: 3;
                margin-top: 1rem;
            }
        }
        @media (max-width: 480px) {
            .hero {
                padding: 3rem 0;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            article h1 {
                font-size: 2rem;
            }
            article h2 {
                font-size: 1.7rem;
            }
            .interactive-section {
                padding: 1.5rem;
            }
            .quick-links-grid {
                grid-template-columns: 1fr;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.8s ease forwards;
        }
        @media print {
            .site-header, .sidebar, .interactive-section, .site-footer {
                display: none;
            }
            body {
                font-size: 12pt;
                color: black;
                background: white;
            }
            .container {
                max-width: 100%;
                padding: 0;
            }
        }