:root {
            --primary: #FF6B35;
            --secondary: #004E89;
            --accent: #00BBF9;
            --dark: #1A1A2E;
            --light: #F7F9FC;
            --gray: #8D99AE;
            --success: #06D6A0;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --radius: 12px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--light);
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--dark) 0%, var(--secondary) 100%);
            color: white;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .my-logo:hover {
            color: var(--accent);
            transform: scale(1.03);
        }
        .my-logo i {
            color: var(--primary);
        }
        .search-form {
            display: flex;
            flex: 0 1 400px;
        }
        .search-form input {
            flex-grow: 1;
            padding: 12px 18px;
            border: none;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--primary);
            color: white;
            border: none;
            border-radius: 0 var(--radius) var(--radius) 0;
            padding: 0 22px;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #e05a2b;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        nav {
            background-color: rgba(0, 0, 0, 0.2);
            padding: 1rem 0;
        }
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
            justify-content: center;
        }
        .nav-menu a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 6px;
            transition: var(--transition);
        }
        .nav-menu a:hover,
        .nav-menu a.active {
            background-color: var(--primary);
            color: white;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #f0f2f5;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--secondary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 40px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--dark);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 4px solid var(--primary);
            padding-bottom: 15px;
        }
        h2 {
            color: var(--secondary);
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem 0;
            padding-top: 10px;
            border-top: 2px dashed #eee;
        }
        h3 {
            color: var(--dark);
            font-size: 1.6rem;
            margin: 2rem 0 1rem 0;
        }
        h4 {
            color: #555;
            font-size: 1.3rem;
            margin: 1.5rem 0 0.8rem 0;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            color: var(--secondary);
            font-weight: 500;
            background: #f0f7ff;
            padding: 20px;
            border-left: 5px solid var(--accent);
            border-radius: 0 var(--radius) var(--radius) 0;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fff9e6;
            padding: 20px;
            border-radius: var(--radius);
            border-left: 5px solid #FFD166;
            margin: 25px 0;
        }
        .highlight strong {
            color: #E07A5F;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin: 25px auto;
            display: block;
            transition: var(--transition);
        }
        img:hover {
            transform: translateY(-5px);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: -15px;
            margin-bottom: 25px;
            font-size: 0.95rem;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.8rem;
        }
        a.article-link {
            color: var(--secondary);
            text-decoration: none;
            border-bottom: 2px dotted var(--accent);
            font-weight: 600;
            transition: var(--transition);
        }
        a.article-link:hover {
            color: var(--primary);
            border-bottom-style: solid;
            background-color: #f0f7ff;
            padding: 2px 4px;
            border-radius: 4px;
        }
        blockquote {
            border-left: 4px solid var(--primary);
            padding-left: 20px;
            margin: 30px 0;
            font-style: italic;
            color: #555;
            background-color: #f9f9f9;
            padding: 20px;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat-card {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            padding: 20px;
            border-radius: var(--radius);
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-8px);
        }
        .stat-card .number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
        }
        .stat-card .label {
            color: var(--dark);
            font-weight: 600;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            margin-top: 0;
            color: var(--secondary);
            font-size: 1.4rem;
            border-bottom: 2px solid #eee;
            padding-bottom: 10px;
        }
        .quick-links ul {
            list-style: none;
            margin-left: 0;
        }
        .quick-links li {
            margin-bottom: 12px;
        }
        .quick-links a {
            text-decoration: none;
            color: #444;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 15px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .quick-links a:hover {
            background-color: var(--secondary);
            color: white;
            transform: translateX(5px);
        }
        .update-time {
            color: var(--gray);
            font-size: 0.9rem;
            text-align: right;
            margin-top: 30px;
            padding-top: 15px;
            border-top: 1px solid #eee;
        }
        .user-interaction {
            margin-top: 50px;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        .form-box {
            background: white;
            padding: 30px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .form-box h3 {
            color: var(--secondary);
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin: 20px 0;
            font-size: 2rem;
            color: #FFD700;
        }
        .star-rating i {
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating i:hover {
            transform: scale(1.2);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid #ddd;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--accent);
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 187, 249, 0.2);
        }
        button[type="submit"] {
            background: linear-gradient(to right, var(--primary), #FF8E53);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: var(--radius);
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            width: 100%;
        }
        button[type="submit"]:hover {
            background: linear-gradient(to right, #e05a2b, #FF7B42);
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(255, 107, 53, 0.4);
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 50px 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 h3 {
            color: var(--accent);
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 8px;
        }
        friend-link {
            display: block;
            margin: 15px 0;
            padding: 12px 20px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 8px;
            transition: var(--transition);
        }
        friend-link a {
            color: #FFD166;
            text-decoration: none;
            font-weight: 600;
        }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateX(5px);
        }
        .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: 768px) {
            .header-top {
                flex-direction: column;
                gap: 20px;
            }
            .search-form {
                width: 100%;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 20px;
                right: 20px;
            }
            nav {
                display: none;
                padding: 0;
            }
            nav.active {
                display: block;
            }
            .nav-menu {
                flex-direction: column;
                gap: 0;
                padding: 20px 0;
            }
            .nav-menu li {
                width: 100%;
                text-align: center;
            }
            .nav-menu a {
                display: block;
                padding: 15px;
                border-radius: 0;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .article-content {
                padding: 25px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
        }