/* 自定义样式 */
        :root {
            --primary: #4F46E5;
            --secondary: #8B5CF6;
            --dark: #0F172A;
            --light: #F1F5F9;
        }
        
        body {
            font-family: 'Inter', sans-serif;
            background-color: #f8fafc;
            overflow-x: hidden;
        }
        
        #particles-js {
            position: fixed;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            z-index: -1;
        }
        
        /* 主内容区 */
        .main-content {
            margin-left: 280px;
            transition: margin 0.3s ease;
            min-height: 100vh;
        }
        
        @media (max-width: 991px) {
            .main-content {
                margin-left: 0;
            }
        }
        
        /* 卡片样式 - 修改为一行5个 */
        .agent-grid {
            display: grid;
            grid-template-columns: repeat(5, minmax(0, 1fr));
            gap: 20px;
            margin-top: 24px;
        }
        
        @media (max-width: 1400px) {
            .agent-grid {
                grid-template-columns: repeat(4, minmax(0, 1fr));
            }
        }
        
        @media (max-width: 1100px) {
            .agent-grid {
                grid-template-columns: repeat(3, minmax(0, 1fr));
            }
        }
        
        @media (max-width: 768px) {
            .agent-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }
        }
        
        @media (max-width: 480px) {
            .agent-grid {
                grid-template-columns: 1fr;
            }
        }
        
        .agent-card {
            background: white;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            height: 360px;
            position: relative;
            cursor: pointer;
        }
        
        .agent-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
        }
        
        .agent-image {
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            position: absolute;
            top: 0;
            left: 0;
            z-index: 1;
        }
        
        .agent-content {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 20px;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
            color: white;
            z-index: 2;
            transition: all 0.3s ease;
        }
        
        .agent-card:hover .agent-content {
            background: linear-gradient(to top, rgba(79, 70, 229, 0.9), transparent);
        }
        
        .agent-content h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        
        .agent-content p {
            font-size: 0.8rem;
            opacity: 0.8;
            margin-bottom: 0;
        }
        
        .agent-category {
            position: absolute;
            top: 15px;
            right: 15px;
            background: rgba(79, 70, 229, 0.85);
            color: white;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 500;
            z-index: 3;
        }
        
        /* 侧边栏样式 */
        .sidebar {
            width: 280px;
            height: 100vh;
            position: fixed;
            top: 0;
            left: 0;
            background: white;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
            overflow-y: auto;
            z-index: 100;
            transition: transform 0.3s ease;
        }
        
        @media (max-width: 991px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
        }
        
        .sidebar-header {
            padding: 24px;
            border-bottom: 1px solid #e2e8f0;
        }
        
        .sidebar-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--dark);
            display: flex;
            align-items: center;
        }
        
        .sidebar-logo i {
            margin-right: 12px;
            color: var(--primary);
            font-size: 1.8rem;
        }
        
        .sidebar-logo span {
            color: var(--primary);
        }
        
        .sidebar-search {
            position: relative;
            margin-top: 16px;
        }
        
        .sidebar-search i {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: #94a3b8;
        }
        
        .sidebar-search input {
            width: 100%;
            padding: 10px 16px 10px 40px;
            border-radius: 8px;
            border: 1px solid #e2e8f0;
            background: #f8fafc;
            font-size: 0.875rem;
        }
        
        .sidebar-menu {
            padding: 24px;
        }
        
        .sidebar-title {
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: #64748b;
            margin-bottom: 16px;
        }
        
        .sidebar-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .sidebar-item {
            margin-bottom: 4px;
        }
        
        .sidebar-link {
            display: flex;
            align-items: center;
            padding: 10px 12px;
            border-radius: 8px;
            color: #334155;
            text-decoration: none;
            transition: all 0.2s ease;
        }
        
        .sidebar-link:hover, .sidebar-link.active {
            background: #f1f5f9;
            color: var(--primary);
        }
        
        .sidebar-icon {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 12px;
            border-radius: 10px;
            background: rgba(79, 70, 229, 0.1);
            color: #4F46E5;
        }
        
        .badge {
            background: var(--primary);
            color: white;
            font-size: 0.75rem;
            padding: 2px 8px;
            border-radius: 9999px;
            margin-left: auto;
        }
        
        /* 页眉样式 */
        header {
            background: white;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 50;
        }
        
        .container {
            max-width: 1600px;
            margin: 0 auto;
            padding: 0 24px;
        }
        
        nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }
        
        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--dark);
            text-decoration: none;
            display: flex;
            align-items: center;
        }
        
        .logo i {
            margin-right: 8px;
            color: var(--primary);
        }
        
        .logo span {
            color: var(--primary);
        }
        
        .nav-links {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        
        .nav-links li {
            margin: 0 16px;
        }
        
        .nav-links a {
            text-decoration: none;
            color: #334155;
            font-weight: 500;
            transition: color 0.2s ease;
        }
        
        .nav-links a:hover {
            color: var(--primary);
        }
        
        .cta-buttons {
            display: flex;
            gap: 12px;
        }
        
        .btn {
            padding: 10px 20px;
            border-radius: 8px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        
        .btn-outline {
            border: 1px solid var(--primary);
            background: transparent;
            color: var(--primary);
        }
        
        .btn-outline:hover {
            background: rgba(79, 70, 229, 0.1);
        }
        
        .btn-primary {
            background: var(--primary);
            color: white;
            border: none;
        }
        
        .btn-primary:hover {
            background: #4338ca;
        }
        
        /* 移动端侧边栏切换按钮 */
        .sidebar-toggle {
            position: fixed;
            top: 24px;
            left: 24px;
            width: 40px;
            height: 40px;
            background: white;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 101;
            cursor: pointer;
            display: none;
        }
        
        @media (max-width: 991px) {
            .sidebar-toggle {
                display: flex;
            }
        }
        
        /* 登录模态框 */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1000;
            justify-content: center;
            align-items: center;
        }
        
        .modal-content {
            background: white;
            border-radius: 16px;
            width: 100%;
            max-width: 400px;
            overflow: hidden;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
        }
        
        .modal-header {
            padding: 24px;
            text-align: center;
            background: #f8fafc;
        }
        
        .modal-title {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--dark);
        }
        
        .modal-subtitle {
            color: #64748b;
            font-size: 0.875rem;
        }
        
        .close {
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 1.5rem;
            cursor: pointer;
            color: #94a3b8;
        }
        
        .modal-body {
            padding: 24px;
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-control {
            width: 100%;
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid #e2e8f0;
            font-size: 1rem;
        }
        
        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
        }
        
        .forgot-password {
            display: block;
            text-align: right;
            margin-top: 8px;
            color: var(--primary);
            font-size: 0.875rem;
            text-decoration: none;
        }
        
        .form-check {
            display: flex;
            align-items: center;
        }
        
        .form-check-input {
            margin-right: 8px;
        }
        
        .login-btn {
            width: 100%;
            padding: 12px;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: background 0.2s ease;
        }
        
        .login-btn:hover {
            background: #4338ca;
        }
        
        .separator {
            position: relative;
            text-align: center;
            margin: 24px 0;
            color: #94a3b8;
        }
        
        .separator::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 0;
            right: 0;
            height: 1px;
            background: #e2e8f0;
            z-index: 1;
        }
        
        .separator span {
            position: relative;
            z-index: 2;
            background: white;
            padding: 0 12px;
        }
        
        .social-login {
            display: flex;
            justify-content: center;
            gap: 16px;
        }
        
        .social-btn {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: #f1f5f9;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background 0.2s ease;
        }
        
        .social-btn:hover {
            background: #e2e8f0;
        }
        
        .modal-footer {
            padding: 20px 24px;
            text-align: center;
            background: #f8fafc;
            border-top: 1px solid #e2e8f0;
            color: #64748b;
            font-size: 0.875rem;
        }
        
        .modal-footer a {
            color: var(--primary);
            text-decoration: none;
            margin-left: 4px;
        }
        
        /* 聊天面板 */
        .chat-panel {
            position: fixed;
            bottom: 0;
            right: 0;
            width: 350px;
            height: 500px;
            background: white;
            border-radius: 16px 16px 0 0;
            box-shadow: 0 -10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
            z-index: 100;
            display: none;
            flex-direction: column;
            transform: translateY(0);
            transition: transform 0.3s ease;
        }
        
        .chat-container {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        
        .chat-header {
            padding: 16px;
            border-bottom: 1px solid #e2e8f0;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        
        .chat-identity {
            display: flex;
            align-items: center;
        }
        
        .chat-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 12px;
        }
        
        .chat-info h3 {
            font-size: 1rem;
            margin: 0;
        }
        
        .chat-info p {
            font-size: 0.75rem;
            color: #64748b;
            margin: 0;
        }
        
        .close-chat {
            background: none;
            border: none;
            color: #94a3b8;
            cursor: pointer;
            font-size: 1.2rem;
        }
        
        .chat-messages {
            flex: 1;
            padding: 16px;
            overflow-y: auto;
        }
        
        .message {
            padding: 12px;
            border-radius: 12px;
            margin-bottom: 12px;
            max-width: 80%;
        }
        
        .message.user {
            background: #f1f5f9;
            border-radius: 12px 12px 0 12px;
            margin-left: auto;
        }
        
        .message.bot {
            background: rgba(79, 70, 229, 0.1);
            border-radius: 12px 12px 12px 0;
            margin-right: auto;
        }
        
        .chat-input {
            padding: 16px;
            border-top: 1px solid #e2e8f0;
            display: flex;
        }
        
        .chat-input input {
            flex: 1;
            padding: 12px 16px;
            border-radius: 24px;
            border: 1px solid #e2e8f0;
            font-size: 0.875rem;
        }
        
        .chat-input button {
            background: var(--primary);
            color: white;
            border: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            margin-left: 12px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        /* 标题样式 */
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            text-align: center;
            margin-bottom: 16px;
            color: var(--dark);
        }
        
        .section-subtitle {
            font-size: 1.125rem;
            text-align: center;
            color: #64748b;
            max-width: 600px;
            margin: 0 auto 40px;
        }