* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        :root {
            --primary-color: #00dbde;
            --secondary-color: #fc00ff;
            --bg-dark: #0a0a0f;
            --card-bg: rgba(20, 20, 35, 0.7);
            --text-light: #f0f0f0;
            --text-dim: #8888aa;
            --footer-bg: #0c0c14;
            --poem-color: rgba(180, 180, 220, 0.7);
        }
        
        /* 默认浅色主题 */
        body {
            font-family: 'Exo 2', sans-serif;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 50%, #dee2e6 100%);
            color: #333333;
            min-height: 100vh;
            overflow: hidden;
            position: relative;
            cursor: default;
        }

        /* 鼠标特效元素 - 浅色主题 */
        .mouse-effect {
            position: fixed;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: radial-gradient(circle, #007bff, transparent);
            pointer-events: none;
            z-index: 9999;
            mix-blend-mode: screen;
            opacity: 0.7;
            transform: translate(-50%, -50%);
            transition: width 0.2s, height 0.2s;
            filter: blur(1px);
        }
        
        .mouse-trail {
            position: fixed;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #6f42c1;
            pointer-events: none;
            z-index: 9998;
            opacity: 0;
            filter: blur(1px);
            transition: opacity 0.3s, transform 0.3s;
        }
        
        /* 页头 - 左侧标题，右侧时间 - 浅色主题 */
        .page-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 60px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 25px;
            z-index: 100;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        }
        
        .logo {
            font-family: 'Orbitron', sans-serif;
            font-size: 1.8rem;
            font-weight: 700;
            background: linear-gradient(90deg, #007bff, #6f42c1);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: 1px;
            text-shadow: 0 0 15px rgba(0, 123, 255, 0.3);
        }
        
        .nav-toggle {
            cursor: pointer;
            color: #333333;
            font-size: 1.2rem;
            transition: all 0.3s ease;
            padding: 5px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .nav-toggle:hover {
            background: rgba(0, 123, 255, 0.1);
            color: #007bff;
        }
        
        .header-nav {
            display: flex;
            gap: 20px;
            align-items: center;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-10px);
            transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }
        
        .header-nav.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        
        .nav-link {
            font-size: 1rem;
            color: #333333;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
            padding: 8px 12px;
            border-radius: 20px;
            background: rgba(240, 240, 240, 0.5);
            backdrop-filter: blur(5px);
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }
        
        .nav-link:hover {
            color: #007bff;
            background: rgba(220, 220, 220, 0.7);
            transform: translateY(-2px);
            box-shadow: 0 4px 10px rgba(0, 123, 255, 0.2);
        }
        
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 8px;
            left: 12px;
            right: 12px;
            height: 2px;
            background: linear-gradient(90deg, #007bff, #6f42c1);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform 0.3s ease;
        }
        
        .nav-link:hover::after {
            transform: scaleX(1);
        }
        
        .header-time-container {
            min-width: 120px;
            width: 120px;
            text-align: left;
            overflow: hidden;
        }
        
        .header-time {
            font-family: 'Orbitron', sans-serif;
            font-size: 1.3rem;
            font-weight: 600;
            color: #333333;
            text-shadow: 0 0 10px rgba(0, 123, 255, 0.3);
            text-align: left;
            white-space: nowrap;
        }
        
        /* 主内容区 */
        .main-content {
            position: relative;
            z-index: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 80px 20px 70px; /* 考虑页头和页脚的高度 */
        }
        
        /* 搜索框容器 */
        .search-container {
            width: 100%;
            max-width: 700px;
            margin-bottom: 15px; /* 给热搜词留出空间 */
        }
        
        /* 搜索引擎选择 - 浅色主题 */
        .engine-selector {
            display: flex;
            justify-content: center;
            gap: 12px;
            margin-bottom: 25px;
            flex-wrap: wrap;
        }
        
        .engine-btn {
            background: rgba(240, 240, 240, 0.8);
            border: 1px solid rgba(0, 0, 0, 0.1);
            border-radius: 50px;
            padding: 10px 20px;
            color: #666666;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 8px;
            min-width: 100px;
            justify-content: center;
        }
        
        .engine-btn:hover {
            background: rgba(220, 220, 220, 0.8);
            color: #333333;
        }
        
        .engine-btn.active {
            background: linear-gradient(90deg, #007bff, #6f42c1);
            color: #fff;
            border-color: transparent;
            box-shadow: 0 5px 15px rgba(0, 123, 255, 0.3);
        }
        
        /* 搜索输入框 - 浅色主题 */
        .search-input-wrapper {
            position: relative;
            margin-bottom: 10px;
        }
        
        .search-input {
            width: 100%;
            padding: 18px 25px;
            font-size: 1.1rem;
            background: rgba(255, 255, 255, 0.9);
            border: 2px solid rgba(0, 0, 0, 0.1);
            border-radius: 50px;
            color: #333333;
            outline: none;
            transition: all 0.3s ease;
            padding-right: 60px;
        }
        
        .search-input:focus {
            border-color: #007bff;
            box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.2);
        }
        
        .search-btn {
            position: absolute;
            right: 5px;
            top: 5px;
            bottom: 5px;
            background: linear-gradient(90deg, #007bff, #6f42c1);
            border: none;
            border-radius: 50px;
            color: white;
            font-size: 1rem;
            padding: 0 25px;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .search-btn:hover {
            transform: scale(1.05);
            box-shadow: 0 5px 15px rgba(0, 123, 255, 0.4);
        }

        /* 搜索提示词容器 */
        .search-suggestions {
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background: white;
            border: 1px solid rgba(0, 0, 0, 0.1);
            border-radius: 0 0 25px 25px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            z-index: 999;
            max-height: 300px;
            overflow-y: auto;
            display: none;
        }

        .search-suggestion-item {
            padding: 10px 25px;
            cursor: pointer;
            transition: all 0.3s ease;
            color: #333333;
            font-size: 0.95rem;
        }

        .search-suggestion-item:hover {
            background: rgba(0, 123, 255, 0.05);
            color: #007bff;
        }

        /* 深色模式下的搜索提示词 */
        body.dark-mode .search-suggestions {
            background: rgba(10, 10, 25, 0.95);
            border: 1px solid rgba(100, 100, 150, 0.2);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        }

        body.dark-mode .search-suggestion-item {
            color: var(--text-light);
        }

        body.dark-mode .search-suggestion-item:hover {
            background: rgba(0, 219, 222, 0.1);
            color: var(--primary-color);
        }
        
        /* 热搜词区域 - 浅色主题 */
        .hot-words-container {
            width: 100%;
            max-width: 700px;
            margin-top: 5px;
            padding: 8px 0;
            overflow: hidden;
        }
        
        .hot-words {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        
        .hot-word {
            color: rgba(100, 100, 100, 0.6);
            font-size: 0.85rem;
            cursor: pointer;
            transition: all 0.3s ease;
            padding: 4px 8px;
            border-radius: 4px;
        }
        
        .hot-word:hover {
            color: rgba(50, 50, 50, 0.9);
            background: rgba(220, 220, 220, 0.5);
        }
        
        .hot-word.loading {
            color: rgba(100, 100, 100, 0.6);
            animation: pulse 1.5s infinite;
        }
        
        @keyframes pulse {
            0% { opacity: 0.6; }
            50% { opacity: 1; }
            100% { opacity: 0.6; }
        }
        
        /* 页脚 - 浅色主题 */
        .page-footer {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 40px;
            background: #f8f9fa;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 25px;
            z-index: 100;
            border-top: 1px solid rgba(0, 0, 0, 0.1);
            color: rgba(100, 100, 100, 0.8);
            font-size: 0.85rem;
        }
        
        .footer-date {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        .footer-beian {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        /* 诗句容器样式 - 浅色主题 */
        .poem-container {
            width: 100%;
            max-width: 700px;
            margin: 15px auto 0;
            text-align: center;
            padding: 12px 0;
            border-top: 1px solid rgba(0, 0, 0, 0.1);
        }
        
        .poem-text {
            font-family: 'Ma Shan Zheng', cursive, serif;
            font-size: 1.1rem;
            color: rgba(100, 100, 100, 0.7);
            letter-spacing: 2px;
            line-height: 1.6;
            font-weight: 300;
            text-shadow: 0 0 8px rgba(0, 123, 255, 0.2);
            opacity: 0.7;
            transition: opacity 0.5s ease, transform 0.5s ease;
        }
        
        .poem-text:hover {
            opacity: 1;
            transform: translateY(-2px);
            color: rgba(50, 50, 50, 0.9);
        }
        
        /* 深色主题样式 */
        body.dark-mode {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #151525 50%, #0f1725 100%);
            color: var(--text-light);
        }

        body.dark-mode .page-header {
            background: rgba(10, 10, 20, 0.6);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        body.dark-mode .logo {
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        body.dark-mode .header-time {
            color: var(--text-light);
            text-shadow: 0 0 10px rgba(0, 219, 222, 0.5);
        }
        
        body.dark-mode .nav-link {
            color: var(--text-light);
            background: rgba(30, 30, 50, 0.7);
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
        }
        
        body.dark-mode .nav-link:hover {
            color: var(--primary-color);
            background: rgba(40, 40, 70, 0.9);
            box-shadow: 0 4px 10px rgba(0, 219, 222, 0.2);
        }
        
        body.dark-mode .nav-link::after {
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
        }
        
        body.dark-mode .nav-toggle {
            color: var(--text-light);
        }
        
        body.dark-mode .nav-toggle:hover {
            background: rgba(0, 219, 222, 0.1);
            color: var(--primary-color);
        }

        body.dark-mode .engine-btn {
            background: rgba(30, 30, 50, 0.6);
            border: 1px solid rgba(100, 100, 150, 0.2);
            color: var(--text-dim);
        }

        body.dark-mode .engine-btn:hover {
            background: rgba(40, 40, 70, 0.8);
            color: var(--text-light);
        }

        body.dark-mode .engine-btn.active {
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
        }

        body.dark-mode .search-input {
            background: rgba(10, 10, 25, 0.8);
            border: 2px solid rgba(100, 100, 150, 0.3);
            color: var(--text-light);
        }

        body.dark-mode .search-input:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(0, 219, 222, 0.2);
        }

        body.dark-mode .search-btn {
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
        }

        body.dark-mode .hot-word {
            color: rgba(160, 160, 200, 0.5);
        }

        body.dark-mode .hot-word:hover {
            color: rgba(200, 200, 255, 0.8);
            background: rgba(30, 30, 50, 0.3);
        }

        body.dark-mode .hot-word.loading {
            color: rgba(160, 160, 200, 0.5);
        }

        body.dark-mode .page-footer {
            background: var(--footer-bg);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            color: rgba(180, 180, 220, 0.6);
        }

        body.dark-mode .mouse-effect {
            background: radial-gradient(circle, var(--primary-color), transparent);
        }

        body.dark-mode .mouse-trail {
            background: var(--secondary-color);
        }

        body.dark-mode .mouse-effect:hover {
            background: radial-gradient(circle, var(--secondary-color), transparent);
        }

        body.dark-mode .poem-container {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        body.dark-mode .poem-text {
            color: var(--poem-color);
            text-shadow: 0 0 8px rgba(180, 180, 220, 0.2);
        }

        body.dark-mode .poem-text:hover {
            color: rgba(200, 200, 240, 0.8);
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .page-header {
                padding: 0 15px;
                height: 55px;
            }
            
            .logo {
                font-size: 1.5rem;
            }
            
            .header-nav {
                gap: 15px;
            }
            
            .nav-link {
                font-size: 0.8rem;
            }
            
            .header-time-container {
                min-width: 100px;
                width: 100px;
            }
            
            .header-time {
                font-size: 1.1rem;
            }
            
            .main-content {
                padding: 65px 15px 50px;
            }
            
            .engine-selector {
                gap: 8px;
            }
            
            .engine-btn {
                padding: 8px 15px;
                font-size: 0.85rem;
                min-width: 85px;
            }
            
            .search-input {
                padding: 15px 20px;
                font-size: 1rem;
            }
            
            .page-footer {
                padding: 0 15px;
                height: 35px;
                font-size: 0.8rem;
                flex-direction: column;
                justify-content: center;
                gap: 3px;
            }
            
            .footer-date, .footer-beian {
                width: 100%;
                justify-content: center;
            }
            
            .poem-text {
                font-size: 1rem;
                letter-spacing: 1px;
            }
        }
        
        @media (max-width: 480px) {
            .logo {
                font-size: 1.3rem;
            }
            
            .header-nav {
                gap: 10px;
            }
            
            .nav-link {
                font-size: 0.9rem;
            }
            
            .header-time-container {
                min-width: 90px;
                width: 90px;
            }
            
            .header-time {
                font-size: 1rem;
            }
            
            .engine-btn {
                padding: 6px 12px;
                font-size: 0.8rem;
                min-width: 75px;
            }
            
            .hot-word {
                font-size: 0.8rem;
            }
            
            .page-footer {
                font-size: 0.75rem;
                height: 40px;
            }
            
            .poem-text {
                font-size: 0.95rem;
                letter-spacing: 0.5px;
            }
            
            .poem-container {
                margin-top: 10px;
                padding: 8px 0;
            }
        }
        
        /* 防止滚动，确保一页显示 */
        html, body {
            overflow: hidden;
            height: 100%;
        }
        
        /* 页面加载动画 */
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }
        
        .fade-in {
            animation: fadeIn 0.8s ease forwards;
        }