:root {
            --primary-color: #ff961f;
            --secondary-color: #232330;
            --accent-color: #e74c3c;
            --light-bg: #f8f9fa;
            --dark-text: #333;
            --light-text: #fff;
            --gray-text: #777;
            --border-color: #e0e0e0;
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Helvetica Neue', Arial, sans-serif;
            color: var(--dark-text);
            background-color: var(--light-bg);
            line-height: 1.6;
        }
        img {
            display: block;
        }
        /* 通用部分样式 */     
        .container {
            position: relative;
            width: 100%;
            max-width: 1150px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .section {
            padding: 80px 0;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 50px;
            position: relative;
        }
        
        .section-title h2 {
            font-size: 2.2rem;
            color: var(--secondary-color);
            margin-bottom: 15px;
            margin-top: 30px;
        }

        .section-title span {
            color: var(--primary-color);
        }

        /* 滚动动画 */
        @keyframes fadeIn {
            from {
                opacity: 0;
            }
            to {
                opacity: 1;
            }
        }

        /* 导航栏样式 */
        .navbar {
            padding: 15px 0;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            box-shadow: none;
            transition: var(--transition);
        }
        .navbar.fixed {
            background-color: rgba(255, 255, 255, 0.9);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        
        .nav-container {
            display: flex;
            /* justify-content: space-between; */
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
            color: var(--light-text);
            font-size: 1.5rem;
            font-weight: bold;
            text-decoration: none;
        }
        
        .menu-toggle {
            display: none;
        }
        .menu-toggle .menu-open {
            display: block;
        }
        .menu-toggle .menu-close {
            display: none;
        }
        .menu-toggle.open .menu-open {
            display: none;
        }
        .menu-toggle.open .menu-close {
            display: block;
        }

        .nav-links {
            display: flex;
            list-style: none;
          float: left;
          margin-left: 200px;
            
        }
        
        .nav-links li {
            /* width: 115px; */
            text-align: center;
            margin-left: 15px;
        }
        
        .nav-links a {
            color: var(--light-text);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
        }

        .nav-links li.active a {
            color: var(--primary-color) !important;
        }

        .nav-links a:hover {
            color: var(--primary-color);
        }
        
        
        .btn-outline {
            border: 1px solid var(--light-text);
            color: var(--light-text);
            margin-right: 10px;
        }
        .btns {
            padding: 8px 20px;
            border-radius: 4px;
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            display: inline-block;
        }
        .btn-primary {
            background-color: var(--primary-color);
            color: var(--light-text);
            border: 1px solid var(--primary-color);
        }
        .nav-buttons{
            margin-left: 150px;
        }
        .btn {
            padding: 8px 20px;
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            display: inline-block;
        }
        
        /* banner style */
        .hero {
            background: #2980b9 url('./images/banner_bg.jpg') top center;
            color: var(--light-text);
            padding: 240px 0 160px;
            text-align: center;
        }
        .hero-center {
            position: relative;
            max-width: 680px;
            margin: auto;
            padding-top: 3.625rem;
            padding-bottom: 3.625rem;
        }
        .hero-center h1 {
            font-size: 3rem;
            line-height: 1;
            font-weight: 500;
        }
        
        .hero-center span {
            position: absolute;
            font-size: 1.5rem;
            max-width: 600px;
            opacity: 0.9;
        }
        .hero-center span:nth-of-type(1) {
            left: 0;
            top: 0;
        }
        .hero-center span:nth-of-type(2) {
            right: 0;
            bottom: 0;
        }     
        .hero-buttons {
            margin-top: 82px;
            display: flex;
            justify-content: center;
            gap: 32px;
        }
        
        .hero-buttons .btn {
            padding: 12px 60px;
            font-size: 1.1rem;
            border-radius: 1.65rem;
        }
        .hero-buttons .btn.btn-register {
            background: linear-gradient(0deg, #ff5e49, #ff961f);
            color: #fff;
            display: block;
        }
        .hero-buttons .btn.btn-download {
            background: linear-gradient(0deg, #ff5e49, #ff961f);
            -webkit-background-clip: text;
            color: transparent;
        }
        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        
        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--secondary-color);
        }
        
        .about-text p {
            margin-bottom: 15px;
        }
        
        .about-image {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        
        .about-image img {
            width: 100%;
            height: auto;
            display: block;
        }
        .stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            text-align: center;
        }
        
        .stat-item .number {
            font-size: 2.5rem;
            font-weight: bold;
            color: var(--primary-color);
            margin-bottom: 10px;
        }
        /* 特色功能样式 */
         {
            padding: 95px 0;
        }
        .features-box {.features
            display: grid;
            gap: 60px 30px;
            grid-template-columns: repeat(3, 1fr);
            grid-template-rows: repeat(3, 70px);
        }
            
        .features-grid {
            display: flex;
            align-items: center;
        }
        .features-grid .feature-icon {
            margin-right: 20px;
        }
        .faqs {
            padding-top: 60px;
            padding-bottom: 110px;
        }
        .bg-section {
            position: relative;
            overflow: hidden;
            z-index: 1;
            background-size: cover;
            background-repeat: no-repeat;
            background-position: center center;
            width: 100%;
            height: 100%;
        }
        .row {
            --bs-gutter-x: 1.5rem;
            --bs-gutter-y: 0;
            display: flex
        ;
            flex-wrap: wrap;
            margin-top: calc(var(--bs-gutter-y) * -1);
            margin-right: calc(var(--bs-gutter-x) / -2);
            margin-left: calc(var(--bs-gutter-x) / -2);
        }
        @media (min-width: 992px) {
            .offset-lg-3 {
                margin-left: 25%;
            }
        }
        @media (min-width: 992px) {
            .col-lg-6 {
                flex: 0 0 auto;
                width: 50%;
            }
        }
        .heading.heading-11 .heading-title {
            font-size: 30px;
            line-height: 54px;
        }
        .heading {
            margin-bottom: 48px;
        }
        .text-center {
            text-align: center !important;
        }
        .heading .heading-title {
            font-family: var(--global--font-heading);
            text-transform: capitalize;
            font-size: 30px;
            line-height: 54px;
            margin-bottom: 25px;
            font-weight: 700;
            color: var(--global--color-heading);
        }
        .pricing {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .pricing-card {
            background-color: #fff;
            border-radius: 10px;
            overflow: hidden;
            transition: var(--transition);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
        }
        
        .pricing-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
        }
        
        .pricing-header {
            background-color: var(--primary-color);
            color: white;
            padding: 25px;
            text-align: center;
        }
        
        .pricing-body {
            padding: 30px;
            text-align: center;
        }
        
        .price {
            font-size: 2.5rem;
            font-weight: bold;
            margin-bottom: 15px;
            color: var(--secondary-color);
        }
        
        .pricing-features {
            list-style: none;
            margin: 20px 0;
            text-align: left;
        }
        
        .pricing-features li {
            margin-bottom: 10px;
            padding-left: 25px;
            position: relative;
        }
        
        .pricing-features li:before {
            content: '\f00c';
            font-family: 'Font Awesome 5 Free';
            font-weight: 900;
            color: var(--primary-color);
            position: absolute;
            left: 0;
        }
        /* 案例展示区域样式 */
        .cases {
            padding: 80px 0;
            background-color: #fff;
        }
        
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(255px, 1fr));
            gap: 60px 30px;
        }
        .case-card {
            transition: var(--transition);
        }
        
        .case-card:hover {
            transform: translateY(-10px);
        }
        
        .case-card .case-img, .case-card .case-more .case-more-text {
            position: relative;
            width: 255px;
            height: 200px;
            margin: auto;
            font-size: 3.75rem;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
            background: #e9e9ea;
            color: #bdbdc0;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .case-card .case-img .case-overlay {
            display: flex;
            align-items: center;
            justify-content: center;
            position: absolute;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            background: linear-gradient(110deg, #ff5e49, #ff961f);
            color: #fff;
            font-size: 1.125rem;
            opacity: 0;
            transition: var(--transition);
        }

        .case-card:hover .case-img .case-overlay {
            animation: fadeIn 0.2s ease-in forwards;
            transform: scale(1.2);
            transition: var(--transition);
        }

        .case-card .case-content, .case-card .case-more .case-more-subtext {
            line-height: 60px;
            text-align: center;
        }
        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .feature-card {
            background-color: #fff;
            border-radius: 10px;
            overflow: hidden;
            transition: var(--transition);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            height: 100%;
            padding: 30px;
            text-align: center;
        }
        
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
        }
        
        .feature-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        
        .feature-card h3 {
            margin-bottom: 15px;
            color: var(--secondary-color);
        }
        
        
        /* 倾听 */
        .listen {
            padding: 80px 0;
            background-color: #e9e9ea;
            /* color: #232330; */
        }
        
        .listen .listen-wrap {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px 32px;
            padding: 0 90px;
        }

        .listen .list-card {
            background-color: #fff;
            height: 185px;
            padding: 15px 30px;
            transition: transform 0.3s ease;
        }

        .listen .list-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.15);
        }

        .listen .list-card .card-header {
            border-bottom: 1px solid #e9e9ea;
            padding: 16px 0;
            display: flex;
            align-items: flex-end;
        }
        
        .listen .list-card .card-header h3 {
            font-size: 18px;
            color: #232330;
            line-height: 1;
        }
        
        .listen .list-card .card-header span {
            font-size: 12px;
            color: #bdbdc0;
            margin-left: 10px;
            line-height: 1;
        }
        .listen .list-card .card-header .star {
            display: flex;
            justify-content: flex-end;
            flex: 1;
        }
        .listen .list-card .card-header .star em {
            background: url('./images/star.png') no-repeat center center;
            width: 20px;
            height: 20px;
            margin: 0 1px;
        }
        .listen .list-card .card-header .star em {
            background: url('./images/star.png') no-repeat center center;
            width: 20px;
            height: 20px;
            margin: 0 1px;
        }
        .card-content {
            color: #7b7b83;
            font-size: 14px;
            padding: 20px 0;
        }
        /* 行动召唤区域样式 */
        .cta {
            padding: 60px 0;
            background-color: var(--secondary-color);
            color: #fff;
        }
        
        .cta .container {
            display: flex;
            justify-content: space-between;
        }
        
        .cta-intro h2 {
            font-size: 32px;
            margin-bottom: 20px;
        }
        
        .cta-intro p {
            font-size: 18px;
        }
        
        .cta-buttons {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 20px;
        }
        
        .cta-buttons .btn {
            padding: 12px 60px;
            font-size: 1.1rem;
        }
        
        .cta-buttons .btn.btn-register {
            background: linear-gradient(0deg, #ff5e49, #ff961f);
            color: #fff;
            display: block;
        }
        
        .cta-buttons .btn.btn-download {
            color: #fff;
        }

        /* 合作伙伴区域样式 */
        .partners {
            padding: 80px 0;
            background-color: white;
        }
        
        .partners-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(255px, 1fr));
            gap: 30px;
        }
        
        
        .partners-card {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s ease;
        }
        
        .partners-card .partners-img {
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.15);
        }
        
        .partners-card:hover {
            transform: translateY(-5px);
        }
        
        .partners-name {
            margin-top: 20px;
            font-size: 16px;
            color:#232330;
            line-height: 1.5;
        }
        
        @media (max-width: 1150px) {
            .partners-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (max-width: 768px) {
            .partners-grid {
                grid-template-columns: 1fr;
            }       
        }
        
        /* 页脚样式 */
        .footer {
            background-color: var(--secondary-color);
            color: white;
            padding: 30px 0 20px;
        }
        .footer-content .footer-logo {
            text-align: center;
            font-size: 3.3rem;
        }
        .footer-content .footer-menu {
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 30px 0 20px;
            list-style: none;
            gap: 30px;
        }
        .footer-content .footer-menu a {
            color: #fff;
            font-size: 1rem;
            text-decoration: none;
        }
        
        .footer-column h5 {
            font-size: 1.2rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-column h5:after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 40px;
            height: 2px;
            background-color: var(--primary-color);
        }
        
        
        /* footer */
        .footer-bottom {
            padding: 10px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .footer-links {
            list-style: none;
            display: flex;
            align-items: center;
        }

        .footer-links li {
            padding: 0 5px;
        }
        
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
        }
        
        .footer-links a:hover {
            color: var(--primary-color);
        }
        
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .cta .container {
                flex-direction: column;
                text-align: center;
            }
            .cta .cta-intro {
                margin-bottom: 30px;
            }
        }
        
        @media (max-width: 768px) {
            html {
                font-size: 12px;
            }
            .menu-toggle {
                display: block;
            }
            .fixed .logo {
                color: var(--secondary-color);
            }
            .fixed .menu-toggle svg path {
                fill: var(--secondary-color);
            }
            .nav-links {
                position: fixed;
                top: 58px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 58px);
                background-color: var(--secondary-color);
                flex-direction: column;
                align-items: center;
                justify-content: center;
                transition: var(--transition);
            }
            
            .nav-links.active {
                left: 0;
            }
            
            .nav-links li {
                margin: 15px 0;
            }
            
            .nav-buttons {
                display: none;
            }
            .listen .listen-wrap {
                grid-template-columns: 1fr;
                padding: 0;
            }
            .listen .list-card {
                min-height: 185px;
            }
            .features-box {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-buttons .btn {
                padding: 8px 34px;
                font-size: 1.1rem;
            }
        }
        
        @media (max-width: 576px) {
            .section {
                padding: 60px 0;
            }
            .section-title h2 {
                font-size: 1.8rem;
                
            }

        }