* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "微软雅黑", sans-serif;
}
body {
    background-color: #f5f9ff;
    color: #333;
}
/* 通用图片样式 - 核心：自适应不压缩 */
.section-img {
    width: 100%;
    border-radius: 8px;
    object-fit: contain; /* 改为contain，保证图片完整不压缩 */
    margin-bottom: 20px;
    height: auto; /* 高度自适应，避免拉伸 */
}
/* 9:6比例图片容器（3:2） */
.ratio-9-6-img {
    width: 100%;
    aspect-ratio: 9/6; /* 强制9:6比例 */
    border-radius: 8px;
    overflow: hidden;
    margin: 0 auto;
}
.ratio-9-6-img img {
    width: 100%;
    height: 100%;
    object-fit: contain; /* 完整显示，不压缩 */
}
.card-img {
    width: 100%;
    height: auto; /* 高度自适应 */
    aspect-ratio: 1200/300; /* 保持原比例，不压缩 */
    margin: 0 auto 20px;
    object-fit: contain;
    border-radius: 8px;
}
.case-img {
    height: 180px;
    width: 100%;
    object-fit: contain;
    margin-bottom: 15px;
    border-radius: 8px;
}
.ai-step-img {
    max-width: 800px;
    width: 100%;
    height: auto;
    margin: 40px auto 0;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    object-fit: contain;
}
.decision-path-img {
    max-width: 800px;
    width: 100%;
    height: auto;
    margin: 20px auto 0;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    object-fit: contain;
}

/* 顶部导航 - 移除AI信息获取 */
.top-nav {
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 15px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 999;
}
.logo-container {
    display: flex;
    align-items: center;
    gap: 10px;
}
.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    /*background-color: #2e85ff;  Logo占位背景色 */
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
}
.logo-text {
    font-size: 24px;
    font-weight: bold;
    color: #2e85ff;
}
.nav-links {
    display: flex;
    align-items: center;
}
.nav-links a {
    margin-left: 30px;
    text-decoration: none;
    color: #333;
    transition: all 0.3s ease;
    padding: 8px 15px;
    border-radius: 5px;
    font-size: 16px;
}
.nav-links a:hover {
    background-color: #2e85ff;
    color: #fff;
    font-weight: bold;
    transform: translateY(-2px);
}

/* 轮播图 - 文字靠左、右侧主体背景 */
.carousel {
    height: 500px;
    background:  url(../img/banner.jpg)  no-repeat;
    background-size: 100%;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    position: relative;
    overflow: hidden;
    padding: 0 5%;
}
.carousel-item {
    position: absolute;
    width: 60%;
    text-align: left;
    opacity: 0;
    transition: opacity 0.5s;
    left: 5%;
}
.carousel-item.active {
    opacity: 1;
}
.carousel h1 {
    font-size: 40px;
    margin-bottom: 20px;
    color: #333;
    margin-left: 0;
    max-width: 600px;
}
.carousel h1 span,
.carousel p b{
    color: #1a56db;
}
.carousel p {
    font-size: 18px;
    color: #444;
    max-width: 600px;
    margin: 0;
    line-height: 1.8;
}

/* 通用区块样式 */
.section {
    padding: 80px 5%;
    max-width: 1200px;
    margin: 0 auto;
}
.section-title {
    font-size: 32px;
    text-align: center;
    margin-bottom: 60px;
    color: #1a56db;
    position: relative;
}
.section-title::after {
    content: "";
    width: 80px;
    height: 4px;
    background-color: #2e85ff;
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
}

/* 客户AI获取信息 - 流程化样式 */
.ai-info {
    text-align: center;
}
.ai-steps {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: 0;
    margin-bottom: 30px;
    position: relative;
}
.ai-steps::before {
    content: "";
    position: absolute;
    top: 20px;
    left: 10%;
    right: 10%;
    height: 2px;
    border-top: 2px dashed #999;
    z-index: 1;
}
.ai-step {
    flex: 1;
    min-width: 200px;
    position: relative;
    z-index: 2;
    background: #f5f9ff;
    padding: 0 10px;
}
.ai-step h3 {
    color: #000;
    font-size: 22px;
    margin-bottom: 10px;
}
.ai-step h3 span {
    font-size: 28px;
    font-weight: bold;
}
.ai-step p {
    font-size: 14px;
    color: #666;
    line-height: 1.5;
}

/* SEO vs GEO对比 + 总结 */
.seo-geo {
    display: flex;
    gap: 40px;
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    flex-wrap: wrap;
}
.compare-col {
    flex: 1;
    min-width: 280px;
}
.compare-col h3 {
    color: #1a56db;
    margin-bottom: 20px;
    font-size: 22px;
}
.compare-col ul {
    list-style: none;
}
.compare-col li {
    margin-bottom: 15px;
    padding-left: 25px;
    position: relative;
    color: #666;
}
.seo-li::before {
    content: "⚠️";
    position: absolute;
    left: 0;
    top: 2px;
}
.geo-li::before {
    content: "✅";
    position: absolute;
    left: 0;
    top: 2px;
}
.vs-text {
    align-self: center;
    font-size: 30px;
    color: #ff6b6b;
    font-weight: bold;
    padding: 0 20px;
}
.compare-summary {
    width: 100%;
    margin-top: 30px;
    padding: 20px;
    background: #e6f2ff;
    border-radius: 8px;
    border-left: 4px solid #2e85ff;
}
.compare-summary h4 {
    color: #000;
    font-size: 18px;
    margin-bottom: 10px;
    font-weight: bold;
}
.compare-summary p {
    color: #666;
    line-height: 1.6;
}

/* PACE模型 - 等高一行展示 */
.pace-model-wrap {
    width: 100%;
}
.pace-model {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    width: 100%;
}
.pace-card {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    text-align: center;
    transition: transform 0.3s;
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100%;
}
.pace-card:hover {
    transform: translateY(-5px);
}
.pace-card h3 {
    font-size: 40px;
    color: #2e85ff;
    margin-bottom: 5px;
}
.pace-card .pace-english {
    font-size: 18px;
    color: #333;
    margin-bottom: 15px;
    font-weight: 500;
}
.pace-card .pace-english span {
    font-size: 22px;
    font-weight: bold;
}
.pace-card p {
    color: #666;
    line-height: 1.6;
    font-size: 14px;
    white-space: pre-line;
}

/* 六脉神剑板块 - 简化为9:6示例图 */
.value-show {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
}

/* 服务案例板块 - 标题修改 + LOGO轮播（新增左右虚化） */
.service-cases {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    margin-top: 30px;
}
.cases-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    width: 100%;
    margin-bottom: 40px;
}
.case-card {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}
.case-card:hover {
    transform: translateY(-5px);
}
.case-card-text {
    padding: 20px;
}
.case-card h4 {
    color: #1a56db;
    margin-bottom: 10px;
    font-size: 18px;
}
.case-card p {
    color: #666;
    line-height: 1.5;
    font-size: 14px;
}

/* 品牌LOGO自动滚动轮播（新增左右虚化蒙版） */
.logo-carousel {
    width: 100%;
    overflow: hidden;
    padding: 20px 0;
    background: #f8fbff;
    border-radius: 8px;
    position: relative; /* 新增：为伪元素定位 */
}
/* 左右虚化蒙版伪元素 */
.logo-carousel::before,
.logo-carousel::after {
    content: "";
    position: absolute;
    top: 0;
    height: 100%;
    width: 120px; /* 虚化宽度，响应式调整 */
    z-index: 2;
    pointer-events: none; /* 不影响鼠标交互 */
}
.logo-carousel::before {
    left: 0;
    /* 左虚化：从背景色到透明 */
    background: linear-gradient(to right, #f8fbff 0%, rgba(248, 251, 255, 0) 100%);
}
.logo-carousel::after {
    right: 0;
    /* 右虚化：从透明到背景色 */
    background: linear-gradient(to left, #f8fbff 0%, rgba(248, 251, 255, 0) 100%);
}
.logo-carousel-inner {
    display: flex;
    animation: scroll 20s linear infinite;
    gap: 40px;
    position: relative;
    z-index: 1; /* 低于蒙版 */
}
.logo-item {
    flex: 0 0 120px; /* LOGO固定宽度，可调整 */
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.logo-item img {
    width: 100%;
    height: 100%;
    object-fit: contain; /* 保证LOGO完整不压缩 */
    filter: grayscale(0.3); /* 可选：轻微灰度，hover恢复 */
    transition: filter 0.3s;
}
.logo-item img:hover {
    filter: grayscale(0);
}
@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-100%);
    }
}

/* 客户信息表（新增二维码hover效果） */
.form-section {
    background: linear-gradient(135deg, #2e85ff, #1a56db);
    color: #fff;
    border-radius: 10px;
    padding: 40px;
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
    align-items: center;
}
.form-col {
    flex: 1;
    min-width: 280px;
    position: relative; /* 新增：为二维码定位 */
}
.form-section .section-title {
    color: #fff;
    text-align: left;
    margin-bottom: 20px;
}
.form-section .section-title::after {
    display: none;
}
.form-desc {
    color: #e0efff;
    line-height: 1.6;
    margin-bottom: 20px;
}
/* 二维码容器样式 */
.qrcode-container {
    display: inline-block;
    margin-top: 10px;
    position: relative;
    cursor: pointer;
}
/* 二维码缩略图 */
.qrcode-thumb {
    width: 80px;
    height: 80px; /* 1:1比例 */
    border-radius: 8px;
    object-fit: contain;
    border: 2px solid #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
/* 完整二维码（默认隐藏，hover显示） */
.qrcode-full {
    position: absolute;
    top: -100px;
    left: 0;
    width: 200px;
    height: 200px; /* 1:1比例 */
    background: #fff;
    padding: 10px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    z-index: 999;
    display: none; /* 默认隐藏 */
}
.qrcode-container:hover .qrcode-full {
    display: block; /* hover显示 */
}
.qrcode-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.info-form {
    max-width: 600px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.info-form input, .info-form textarea {
    padding: 15px;
    border-radius: 5px;
    border: none;
    font-size: 16px;
    width: 100%;
}
.info-form button {
    padding: 15px;
    background-color: #fff;
    color: #1a56db;
    border: none;
    border-radius: 5px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
}
.info-form button:hover {
    background-color: #f0f5ff;
}

/* QA问答 */
.qa-section {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
}
.qa-item {
    margin-bottom: 20px;
    border-bottom: 1px solid #eee;
    padding-bottom: 20px;
}
.qa-question {
    font-weight: bold;
    font-size: 18px;
    cursor: pointer;
    color: #1a56db;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.qa-answer {
    margin-top: 10px;
    color: #666;
    line-height: 1.6;
    display: none;
}
.qa-question::after {
    content: "+";
    font-size: 20px;
    transition: transform 0.3s;
}
.qa-item.active .qa-question::after {
    transform: rotate(45deg);
}
.qa-item.active .qa-answer {
    display: block;
}

/* 关于我们 - 图左文右 */
.about-us {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
    align-items: center;
}
.about-img {
    flex: 1;
    min-width: 300px;
}
.about-text {
    flex: 1;
    min-width: 300px;
}
.about-us .section-title {
    text-align: left;
    margin-bottom: 20px;
}
.about-us .section-title::after {
    left: 0;
    transform: none;
}
.about-text p {
    color: #666;
    line-height: 1.8;
    font-size: 18px;
}

/* 底部样式 - 联系方式展示 */
.footer {
    background-color: #1a56db;
    color: #fff;
    padding: 50px 5%;
    text-align: center;
    margin-top: 40px;
}
.footer-contact {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.2);
}
.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
}
.contact-item-icon {
    font-size: 20px;
}
.contact-item-text {
    color: #e0efff;
}
.footer-copyright {
    color: #d0e0ff;
    font-size: 14px;
    line-height: 1.5;
}

/* 响应式适配 */
@media (max-width: 1200px) {
    .pace-model {
        grid-template-columns: repeat(2, 1fr);
    }
    .cases-list {
        grid-template-columns: repeat(2, 1fr);
    }
    .ai-steps::before {
        left: 5%;
        right: 5%;
    }
    .carousel {
        background-size: auto 100%, cover;
    }
    .carousel-item {
        width: 70%;
    }
    /* LOGO轮播适配（虚化宽度调整） */
    .logo-carousel::before,
    .logo-carousel::after {
        width: 100px;
    }
    .logo-item {
        flex: 0 0 100px;
        height: 70px;
    }
}
@media (max-width: 768px) {
    .carousel {
        height: 350px;
        background: linear-gradient(135deg, #e6f2ff, #bddbff);
    }
    .carousel h1 {
        font-size: 28px;
    }
    .carousel-item {
        width: 90%;
        left: 5%;
    }
    .carousel p {
        font-size: 16px;
    }

    .section-title {
        font-size: 26px;
    }
    .section {
        padding: 60px 5%;
    }
    .form-section {
        flex-direction: column;
    }
    .form-section .section-title {
        text-align: center;
    }
    .nav-links {
        display: none;
    }
    .logo-text {
        font-size: 20px;
    }
    .logo-img {
        width: 35px;
        height: 35px;
    }
    .pace-model {
        grid-template-columns: 1fr;
    }
    .cases-list {
        grid-template-columns: 1fr;
    }
    .about-us {
        flex-direction: column;
    }
    .about-us .section-title {
        text-align: center;
    }
    .about-us .section-title::after {
        left: 50%;
        transform: translateX(-50%);
    }
    .ai-steps {
        flex-direction: column;
        gap: 20px;
    }
    .ai-steps::before {
        display: none;
    }
    .ai-step {
        padding: 10px;
        border-bottom: 2px dashed #999;
        width: 100%;
    }
    .ai-step:last-child {
        border-bottom: none;
    }
    .footer-contact {
        flex-direction: column;
        gap: 20px;
        align-items: center;
    }
    .contact-item {
        font-size: 14px;
    }
    /* LOGO轮播移动端适配（虚化宽度调整） */
    .logo-carousel::before,
    .logo-carousel::after {
        width: 80px;
    }
    .logo-item {
        flex: 0 0 80px;
        height: 60px;
    }
    .logo-carousel-inner {
        gap: 20px;
        animation-duration: 15s; /* 移动端滚动快一点 */
    }
    /* 二维码移动端适配 */
    .qrcode-thumb {
        width: 60px;
        height: 60px;
    }
    .qrcode-full {
        width: 180px;
        height: 180px;
        top: -80px;
    }
}