/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #ffffff;
    overflow-x: hidden;
}

/* 顶部导航栏 */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: transparent;
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 5px 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    position: relative;
}



.logo img {
    width: 60px;
    height: auto;
    margin-left: 50px;
    object-fit: contain;
    margin-top: 12px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 100px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
}

.nav-menu li a {
    text-decoration: none;
    color: #fff;
    font-size: 18px;
    font-weight: bold;
    transition: color 0.3s ease;
}

.nav-menu li a:hover {
    color: #fff;
}

.nav-item {
    position: relative;
}

.sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    padding: 10px 0;
    min-width: 150px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1001;
}

.nav-item:hover .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(5px);
}

.sub-menu li {
    padding: 0;
    margin: 0;
    list-style: none;
}

.sub-menu li a {
    display: block;
    padding: 8px 20px;
    color: #333 !important;
    font-size: 14px;
    font-weight: normal;
    white-space: nowrap;
}

.sub-menu li a:hover {
    background: #f5f5f5;
    color: #333 !important;
}



/* 主横幅区域 */
.hero {
    min-height: 450px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ffffff;
    overflow: hidden;
    margin-top: 70px;
    /* padding: 40px 0; */
    box-shadow: 0 8px 10px rgba(0, 0, 0, 0.15);
    border-bottom-left-radius: 10px;
    border-bottom-right-radius: 10px;
}

.hero-container {
    width: 100%;
    height: 450px;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0;
    overflow: hidden;
}

.hero-title {
    font-size: 80px;
    font-weight: 700;
    color: #fff;
    text-align: center;
    margin-bottom: 60px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    letter-spacing: 2px;
}

.hero-car {
    width: 100%;
    max-width: 100vw;
    /* margin-bottom: 80px; */
    text-align: center;
    overflow: hidden;
}

.hero-car img {
    width: 100%;
    height: auto;
    object-fit: cover;
    transition: transform 0.3s ease;
}

/* 轮播按钮 */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
}

.carousel-btn:hover {
    background: rgba(255, 255, 255, 0.4);
}

.prev-btn {
    left: 30px;
}

.next-btn {
    right: 30px;
}

.arrow {
    border: solid #fff;
    border-width: 0 3px 3px 0;
    display: inline-block;
    padding: 8px;
}

.left {
    transform: rotate(135deg);
}

.right {
    transform: rotate(-45deg);
}

/* 轮播图圆点指示器 */
.carousel-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(74, 144, 226, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator:hover {
    background: rgba(74, 144, 226, 0.6);
}

.indicator.active {
    background: #4A90E2;
    transform: scale(1.2);
}



/* 企业直播解决方案模块 */
.enterprise-live {
    background: #f5f5f5;
    padding: 60px 0;
    margin-top: 0;
}

/* 顶部功能标签 */
.live-tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: #fff;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.tab:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.tab.active {
    background: #4A90E2;
    color: #fff;
}

.tab i {
    font-size: 16px;
}

.tab span {
    font-size: 14px;
    font-weight: 500;
}

/* 中间内容区域 */
.live-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.live-image {
    text-align: center;
}

.live-image img {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.live-info h2 {
    font-size: 28px;
    font-weight: bold;
    color: #333;
    margin-bottom: 15px;
}

.live-info p {
    font-size: 16px;
    color: #666;
    margin-bottom: 30px;
    line-height: 1.6;
}

/* 适用场景 */
.live-scenarios {
    margin-bottom: 30px;
}

.live-scenarios h3 {
    font-size: 18px;
    font-weight: bold;
    color: #333;
    margin-bottom: 15px;
}

.live-scenarios ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.live-scenarios li {
    font-size: 14px;
    color: #666;
    position: relative;
    padding-left: 15px;
}

.live-scenarios li::before {
    content: "▶";
    position: absolute;
    left: 0;
    color: #4A90E2;
    font-size: 12px;
}

/* 功能图标 */
.live-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.feature:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.feature i {
    font-size: 24px;
    color: #4A90E2;
}

.feature span {
    font-size: 14px;
    color: #333;
    font-weight: 500;
    text-align: center;
}

/* 底部按钮 */
.live-buttons {
    display: flex;
    gap: 20px;
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: #4A90E2;
    color: #fff;
}

.btn-primary:hover {
    background: #4A90E2;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}

.btn-secondary {
    background: #fff;
    color: #4A90E2;
    border: 1px solid #4A90E2;
}

.btn-secondary:hover {
    background: #f9f9f9;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 103, 0, 0.2);
}

/* 合作客户模块 */
.cooperation {
    background: #f5f5f5;
    padding: 40px 0;
    margin-top: -40px;
}

.cooperation-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.cooperation h2 {
    font-size: 24px;
    font-weight: bold;
    color: #333;
    text-align: center;
    margin-bottom: 40px;
}

.cooperation-slider {
    position: relative;
    overflow: hidden;
    width: 100%;
}

.cooperation-track {
    display: flex;
    animation: scroll 30s linear infinite;
}

.cooperation-item {
    flex: 0 0 auto;
    width: 150px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 15px;
    background: #fff;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    padding: 10px;
}

.cooperation-item img {
    max-width: 100%;
    max-height: 60px;
    object-fit: contain;
}

/* 滚动动画 */
@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

/* 鼠标悬停时暂停滚动 */
.cooperation-slider:hover .cooperation-track {
    animation-play-state: paused;
}

/* 底部footer模块 */
.footer {
    background: #333;
    color: #999;
    padding: 40px 0 20px;
    font-size: 14px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 40px;
    margin-bottom: 30px;
}

/* 左侧logo和联系方式 */
.footer-left {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-logo img {
    width: 80px;
    height: auto;
    object-fit: contain;
}

.footer-logo span {
    font-size: 18px;
    font-weight: bold;
    color: #fff;
}

.footer-contact p {
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    line-height: 1.4;
}

.footer-contact i {
    margin-top: 2px;
    color: #4A90E2;
}

/* 中间产品和方案链接 */
.footer-center {
    display: grid;
    grid-template-columns: auto auto;
    gap: 120px;
    justify-content: flex-start;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 15px;
    position: relative;
    padding-left: 15px;
}

.footer-column h4::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: #4A90E2;
    font-size: 12px;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 10px;
}

.footer-column a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: #4A90E2;
}

/* 右侧二维码 */
.footer-right {
    display: flex;
    justify-content: flex-end;
}

.qrcode {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.qrcode img {
    width: 120px;
    height: 120px;
    background: #fff;
    padding: 10px;
    border-radius: 4px;
}

.qrcode p {
    text-align: center;
    color: #999;
    font-size: 12px;
}

/* 底部友情链接和版权信息 */
.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    border-top: 1px solid #444;
    padding-top: 20px;
}

.friend-link {
    margin-bottom: 15px;
}

.friend-link span {
    margin-right: 10px;
}

.friend-link a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s ease;
}

.friend-link a:hover {
    color: #4A90E2;
}

.copyright p {
    font-size: 12px;
    line-height: 1.4;
    margin-bottom: 5px;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .nav-menu {
        gap: 15px;
    }
    
    .nav-menu li a {
        font-size: 16px;
    }
    
    .hero-title {
        font-size: 60px;
    }
    
    /* 企业直播解决方案 */
    .live-content {
        gap: 40px;
    }
    
    .live-info h2 {
        font-size: 24px;
    }
    
    /* 合作客户 */
    .cooperation-item {
        width: 140px;
        margin: 0 12px;
    }
    
    /* Footer */
    .footer-content {
        gap: 30px;
    }
    
    .footer-center {
        gap: 20px;
    }
}

@media (max-width: 992px) {
    .nav-container {
        padding: 0 20px;
    }
    
    .hero-title {
        font-size: 50px;
    }
    
    .hero-car {
        max-width: 600px;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 10px 0;
    }
    
    .logo img {
        width: 60px;
        height: auto;
        object-fit: contain;
    }
    
    .nav-menu {
        display: none;
    }
    
    .menu-btn {
        display: block;
    }
    
    .hero-title {
        font-size: 40px;
        margin-bottom: 40px;
    }
    
    .hero-car {
        max-width: 100%;
        margin-bottom: 60px;
    }
    
    .carousel-btn {
        width: 40px;
        height: 40px;
    }
    
    .arrow {
        padding: 6px;
    }
    
    /* 企业直播解决方案 */
    .enterprise-live {
        padding: 40px 0;
    }
    
    .live-tabs {
        gap: 15px;
        margin-bottom: 40px;
    }
    
    .tab {
        padding: 10px 16px;
    }
    
    .tab i {
        font-size: 14px;
    }
    
    .tab span {
        font-size: 12px;
    }
    
    .live-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .live-image img {
        max-width: 400px;
    }
    
    .live-info h2 {
        font-size: 20px;
        text-align: center;
    }
    
    .live-info p {
        text-align: center;
    }
    
    .live-scenarios h3 {
        text-align: center;
    }
    
    .live-scenarios ul {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .live-features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .live-buttons {
        justify-content: center;
    }
    
    /* 合作客户 */
    .cooperation {
        padding: 40px 0;
    }
    
    .cooperation h2 {
        font-size: 20px;
        margin-bottom: 30px;
    }
    
    .cooperation-item {
        width: 120px;
        height: 70px;
        margin: 0 10px;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-center {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
    
    .footer-right {
        justify-content: center;
    }
    
    .footer-bottom {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .logo img {
        width: 50px;
        height: auto;
        object-fit: contain;
    }
    
    .nav-menu {
        gap: 10px;
        max-width: 70%;
    }
    
    .nav-menu li a {
        font-size: 10px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .carousel-btn {
        width: 36px;
        height: 36px;
    }
    
    .arrow {
        padding: 5px;
    }
    
    /* 企业直播解决方案 */
    .live-tabs {
        gap: 10px;
    }
    
    .tab {
        padding: 8px 12px;
    }
    
    .tab i {
        font-size: 12px;
    }
    
    .tab span {
        font-size: 10px;
    }
    
    .live-scenarios ul {
        grid-template-columns: 1fr;
    }
    
    .live-features {
        grid-template-columns: 1fr;
    }
    
    .live-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 200px;
        text-align: center;
    }
    
    /* 合作客户 */
    .cooperation h2 {
        font-size: 16px;
        margin-bottom: 20px;
    }
    
    .cooperation-item {
        width: 100px;
        height: 60px;
        margin: 0 8px;
    }
    
    /* Footer */
    .footer-center {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .footer-right {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }
    
    .friend-link {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
}