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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

.container {
    width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部导航 */
.header {
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    width: auto;
    height: 40px;
    margin-right: 10px;
    max-width: 100%;
}

.logo span {
    font-size: 24px;
    font-weight: bold;
    color: rgb(254, 207, 13);
}

.nav ul {
    display: flex;
    list-style: none;
}

.nav li {
    margin-left: 30px;
}

.nav a {
    text-decoration: none;
    color: #333;
    font-size: 16px;
    transition: color 0.3s;
}

.nav a:hover {
    color: rgb(254, 207, 13);
}



/* 英雄区域 */
.hero {
    position: relative;
    padding: 120px 0 80px;
    text-align: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgb(254, 207, 13) 0%, rgb(254, 220, 60) 100%);
    z-index: -1;
    transform: skewY(-5deg);
    transform-origin: top left;
}

.hero-content h1 {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #333;
}

.hero-content p {
    font-size: 20px;
    margin-bottom: 40px;
    color: #666;
}

.btn-primary {
    display: inline-block;
    background: rgb(254, 207, 13);
    color: #333;
    font-size: 18px;
    font-weight: bold;
    padding: 15px 40px;
    border-radius: 30px;
    text-decoration: none;
    transition: all 0.3s;
}

.btn-primary:hover {
    background: #333;
    color: rgb(254, 207, 13);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* 功能介绍 */
.features {
    padding: 80px 0;
    text-align: center;
}

.features h2 {
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #333;
}

.features p {
    font-size: 16px;
    margin-bottom: 60px;
    color: #666;
    line-height: 1.8;
}

.feature-items {
    display: flex;
    justify-content: center;
    gap: 80px;
    margin-bottom: 60px;
}

.feature-item {
    text-align: center;
}

.feature-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(254, 207, 13, 0.1);
    border-radius: 20px;
}

.avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgb(254, 207, 13);
    position: relative;
}

.avatar::after {
    content: '';
    position: absolute;
    top: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 10px;
    background: rgb(254, 207, 13);
    border-radius: 5px 5px 0 0;
}

.screen {
    width: 80px;
    height: 60px;
    background: rgb(254, 207, 13);
    border-radius: 8px;
    position: relative;
}

.screen::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 5px;
    background: rgba(255,255,255,0.5);
    border-radius: 2px;
}

.feature-item h3 {
    font-size: 18px;
    color: #333;
    margin-top: 20px;
}

.video-control {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    max-width: 600px;
    margin: 0 auto;
}

.time, .duration {
    font-size: 14px;
    color: #666;
}

.progress-bar {
    flex: 1;
    height: 8px;
    background: #eee;
    border-radius: 4px;
    overflow: hidden;
}

.progress {
    height: 100%;
    width: 30%;
    background: rgb(254, 207, 13);
    border-radius: 4px;
}

/* 一键分享 */
.share {
    padding: 80px 0;
    background: rgba(254, 207, 13, 0.05);
    text-align: center;
}

.share h2 {
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #333;
}

.share p {
    font-size: 16px;
    margin-bottom: 60px;
    color: #666;
    line-height: 1.8;
}

.share-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
}

.share-item {
    text-align: center;
}

.share-item .avatar {
    margin: 0 auto 10px;
}

.share-item span {
    font-size: 16px;
    color: #333;
}

.arrow {
    width: 40px;
    height: 2px;
    background: rgb(254, 207, 13);
    position: relative;
}

.arrow::after {
    content: '';
    position: absolute;
    right: 0;
    top: -4px;
    width: 0;
    height: 0;
    border-left: 8px solid rgb(254, 207, 13);
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
}

/* 智能识别 */
.intelligent {
    padding: 80px 0;
    text-align: center;
}

.intelligent h2 {
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 60px;
    color: #333;
    line-height: 1.4;
}

.intelligent-illustration {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    height: 400px;
}

.intelligent-illustration .screen {
    width: 600px;
    height: 400px;
    margin: 0 auto;
    background: #f5f5f5;
    border-radius: 12px;
    position: relative;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.screen-header {
    height: 40px;
    background: rgb(254, 207, 13);
    border-radius: 12px 12px 0 0;
    display: flex;
    align-items: center;
    padding: 0 20px;
}

.screen-content {
    padding: 20px;
    height: calc(100% - 40px);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.message {
    background: #fff;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    align-self: flex-start;
    max-width: 80%;
}

.message:nth-child(2n) {
    align-self: flex-end;
}

.intelligent-illustration .avatar {
    position: absolute;
    bottom: -30px;
}

.intelligent-illustration .avatar:nth-child(2) {
    left: 200px;
}

.intelligent-illustration .avatar:nth-child(3) {
    right: 200px;
}

.lightbulb {
    position: absolute;
    top: -50px;
    right: 100px;
    width: 60px;
    height: 60px;
    background: rgb(254, 207, 13);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbulb::before {
    content: '💡';
    font-size: 30px;
}

/* 行动号召 */
.cta {
    padding: 80px 0;
    background: linear-gradient(135deg, rgb(254, 207, 13) 0%, rgb(254, 220, 60) 100%);
    text-align: center;
}

.cta h2 {
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 40px;
    color: #333;
}

.cta .qrcode-list {
    display: flex;
    align-items: center;
    justify-content: center;
}

.cta .qrcode-list .qrcode-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.cta .qrcode-list .qrcode-item:nth-child(2) {
    margin-right: 100px;
    margin-left: 100px;
}

.cta .qrcode-list .qrcode-item img {
    width: 200px;
    height: 200px;
}

.cta .qrcode-list .qrcode-item span {
    margin-top: 10px;
    font-size: 20px;
}

.cta .btn-primary {
    background: #333;
    color: rgb(254, 207, 13);
}

.cta .btn-primary:hover {
    background: #fff;
    color: #333;
}

/* 底部 */
.footer {
    background: #333;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-main {
    display: flex;
    align-items: flex-start;
    gap: 80px;
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
}

.footer-logo img {
    width: auto;
    height: 40px;
    margin-right: 10px;
    max-width: 100%;
}

.footer-logo span {
    font-size: 24px;
    font-weight: bold;
    color: rgb(254, 207, 13);
}

.footer-links {
    display: flex;
    gap: 80px;
}

.link-group {
    position: relative;
}

.link-group h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: rgb(254, 207, 13);
}

.link-group ul {
    list-style: none;
}

.link-group li {
    margin-bottom: 10px;
}

.link-group a {
    text-decoration: none;
    color: #ccc;
    font-size: 14px;
    transition: color 0.3s;
}

.link-group a:hover {
    color: rgb(254, 207, 13);
}

.link-group-content h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: rgb(254, 207, 13);
}

.link-group-content ul {
    list-style: none;
}

.link-group-content li {
    margin-bottom: 10px;
}

.link-group-content a {
    text-decoration: none;
    color: #ccc;
    font-size: 14px;
    transition: color 0.3s;
}

.link-group-content a:hover {
    color: rgb(254, 207, 13);
}

.wechat-qr {
    text-align: center;
}

.qr-code {
    width: 120px;
    height: 120px;
    margin: 0 auto 10px;
    background: #fff;
    padding: 10px;
    border-radius: 8px;
}

.qr-code img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.wechat-qr p {
    font-size: 14px;
    color: #ccc;
    margin: 0;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #444;
    font-size: 14px;
    color: #999;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .container {
        width: 90%;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }

    .hero-content h1 {
        font-size: 36px;
    }

    .feature-items {
        flex-direction: column;
        gap: 40px;
    }

    .share-flow {
        flex-direction: column;
        gap: 20px;
    }

    .arrow {
        transform: rotate(90deg);
    }

    .intelligent-illustration .screen {
        width: 100%;
        height: 300px;
    }

    .intelligent-illustration .avatar {
        position: static;
        margin: 20px auto;
    }

    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: 40px;
        margin-top: 30px;
    }
}