:root {
            --primary: #00B2FF;
            --secondary: #FF4655;
            --accent: #FFD700;
            --dark: #1A1A2E;
            --light: #F8F9FA;
            --gray: #6C757D;
            --success: #28A745;
            --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #0f2027 0%, #203a43 50%, #2c5364 100%);
            background-attachment: fixed;
            min-height: 100vh;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: rgba(26, 26, 46, 0.95);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 3px solid var(--primary);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 2.2rem;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-decoration: none;
            transition: transform 0.3s ease;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .my-logo i {
            color: var(--secondary);
        }
        .search-form {
            flex: 1;
            max-width: 400px;
            margin: 0 30px;
            position: relative;
        }
        .search-form input {
            width: 100%;
            padding: 12px 20px;
            padding-right: 50px;
            border: 2px solid var(--primary);
            border-radius: 30px;
            background: rgba(255, 255, 255, 0.1);
            color: white;
            font-size: 1rem;
            outline: none;
            transition: all 0.3s ease;
        }
        .search-form input:focus {
            background: rgba(255, 255, 255, 0.2);
            box-shadow: 0 0 15px rgba(0, 178, 255, 0.4);
        }
        .search-form button {
            position: absolute;
            right: 5px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--primary);
            border: none;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            color: white;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .search-form button:hover {
            background: var(--secondary);
            transform: translateY(-50%) scale(1.1);
        }
        nav {
            background: rgba(40, 40, 60, 0.95);
            padding: 0;
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .main-nav {
            display: flex;
            list-style: none;
            gap: 5px;
        }
        .main-nav li {
            position: relative;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            padding: 18px 20px;
            display: block;
            font-weight: 600;
            transition: all 0.3s ease;
            border-radius: 5px;
            text-align: center;
        }
        .main-nav a:hover {
            background: var(--primary);
            color: var(--dark);
        }
        .main-nav a.active {
            background: var(--secondary);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 10px;
        }
        .breadcrumb {
            padding: 15px 0;
            background: rgba(0, 0, 0, 0.2);
            margin-bottom: 30px;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 10px;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            color: var(--gray);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            color: var(--primary);
        }
        .breadcrumb a {
            color: var(--light);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .breadcrumb a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        main {
            background: rgba(255, 255, 255, 0.95);
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 10px 50px rgba(0, 0, 0, 0.5);
            margin: 30px auto;
            padding: 40px;
        }
        article {
            max-width: 1000px;
            margin: 0 auto;
        }
        h1 {
            font-size: 3.2rem;
            color: var(--dark);
            margin-bottom: 25px;
            line-height: 1.2;
            text-align: center;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            padding-bottom: 15px;
            border-bottom: 3px dashed var(--primary);
        }
        h2 {
            font-size: 2.5rem;
            color: var(--primary);
            margin: 40px 0 20px;
            padding-left: 15px;
            border-left: 5px solid var(--secondary);
            background: linear-gradient(90deg, rgba(0, 178, 255, 0.1), transparent);
            padding: 15px;
            border-radius: 0 10px 10px 0;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--secondary);
            margin: 30px 0 15px;
            padding-bottom: 8px;
            border-bottom: 2px dotted var(--gray);
        }
        h4 {
            font-size: 1.4rem;
            color: var(--dark);
            margin: 25px 0 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .intro {
            background: linear-gradient(135deg, rgba(0, 178, 255, 0.1), rgba(255, 70, 85, 0.1));
            padding: 30px;
            border-radius: 15px;
            margin-bottom: 40px;
            border-left: 5px solid var(--accent);
        }
        .highlight-box {
            background: var(--light);
            border: 2px solid var(--primary);
            border-radius: 10px;
            padding: 25px;
            margin: 30px 0;
            position: relative;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .highlight-box::before {
            content: '⚡';
            position: absolute;
            top: -15px;
            left: 20px;
            background: var(--light);
            padding: 0 10px;
            font-size: 1.5rem;
        }
        .content-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 2px dotted var(--primary);
            padding-bottom: 2px;
            transition: all 0.3s ease;
        }
        .content-link:hover {
            color: var(--secondary);
            border-bottom-style: solid;
        }
        .featured-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 15px;
            margin: 30px 0;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            transition: transform 0.5s ease;
        }
        .featured-image:hover {
            transform: scale(1.02);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: 10px;
            font-size: 0.9rem;
        }
        ul, ol {
            padding-left: 30px;
            margin: 20px 0;
        }
        li {
            margin-bottom: 10px;
            position: relative;
        }
        .checklist li::before {
            content: '✓';
            color: var(--success);
            font-weight: bold;
            position: absolute;
            left: -25px;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
            margin: 40px 0;
        }
        .stat-card {
            background: white;
            border-radius: 15px;
            padding: 25px;
            text-align: center;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
            border: 2px solid transparent;
            transition: all 0.3s ease;
        }
        .stat-card:hover {
            border-color: var(--primary);
            transform: translateY(-5px);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: bold;
            color: var(--primary);
            display: block;
            line-height: 1;
        }
        .stat-label {
            color: var(--gray);
            font-size: 1.1rem;
            margin-top: 10px;
        }
        .user-interaction {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 15px;
            padding: 40px;
            margin: 50px 0;
            color: white;
        }
        .rating-system {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
        }
        .stars {
            display: flex;
            gap: 10px;
            font-size: 2.5rem;
            cursor: pointer;
        }
        .stars i {
            color: #ddd;
            transition: all 0.2s ease;
        }
        .stars i:hover,
        .stars i.active {
            color: var(--accent);
            transform: scale(1.2);
        }
        .comment-form textarea {
            width: 100%;
            min-height: 150px;
            padding: 20px;
            border-radius: 10px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.1);
            color: white;
            font-size: 1rem;
            resize: vertical;
            outline: none;
            transition: all 0.3s ease;
        }
        .comment-form textarea:focus {
            border-color: white;
            background: rgba(255, 255, 255, 0.2);
        }
        .form-group {
            margin-bottom: 25px;
        }
        .form-group label {
            display: block;
            margin-bottom: 10px;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 15px;
            border-radius: 8px;
            border: 2px solid #ddd;
            font-size: 1rem;
            transition: all 0.3s ease;
        }
        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 178, 255, 0.2);
            outline: none;
        }
        .btn {
            background: var(--primary);
            color: white;
            border: none;
            padding: 15px 35px;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn:hover {
            background: var(--secondary);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 60px 0 30px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h4 {
            color: var(--accent);
            margin-bottom: 25px;
            font-size: 1.4rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 15px;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 10px;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.1);
            padding: 15px;
            border-radius: 8px;
            margin: 10px 0;
            border-left: 4px solid var(--primary);
        }
        friend-link a {
            color: var(--accent);
            text-decoration: none;
            font-weight: 600;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.8rem; }
            h2 { font-size: 2.2rem; }
            .header-top {
                flex-wrap: wrap;
            }
            .search-form {
                order: 3;
                max-width: 100%;
                margin: 20px 0 0;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 100px;
                left: 0;
                right: 0;
                background: var(--dark);
                flex-direction: column;
                padding: 20px;
                border-radius: 0 0 20px 20px;
                box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
                transform: translateY(-150%);
                transition: transform 0.5s ease;
                z-index: 999;
            }
            .main-nav.active {
                transform: translateY(0);
            }
            .main-nav a {
                padding: 15px;
                text-align: left;
                border-radius: 8px;
            }
            main {
                padding: 25px;
                margin: 15px;
            }
            .user-interaction {
                padding: 25px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .my-logo {
                font-size: 1.8rem;
            }
            .intro, .highlight-box {
                padding: 20px;
            }
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in {
            animation: fadeInUp 0.8s ease forwards;
        }
        .delay-1 { animation-delay: 0.2s; opacity: 0; }
        .delay-2 { animation-delay: 0.4s; opacity: 0; }
        .delay-3 { animation-delay: 0.6s; opacity: 0; }
        .tooltip {
            position: relative;
            display: inline-block;
            border-bottom: 1px dotted var(--primary);
            cursor: help;
        }
        .tooltip .tooltip-text {
            visibility: hidden;
            width: 300px;
            background: var(--dark);
            color: white;
            text-align: center;
            border-radius: 6px;
            padding: 15px;
            position: absolute;
            z-index: 1;
            bottom: 125%;
            left: 50%;
            transform: translateX(-50%);
            opacity: 0;
            transition: opacity 0.3s;
            font-size: 0.9rem;
            line-height: 1.5;
        }
        .tooltip:hover .tooltip-text {
            visibility: visible;
            opacity: 1;
        }
        .update-time {
            background: var(--light);
            padding: 15px;
            border-radius: 10px;
            margin: 30px 0;
            display: flex;
            align-items: center;
            gap: 15px;
            border: 2px dashed var(--gray);
        }
        .update-time i {
            color: var(--primary);
            font-size: 1.5rem;
        }