* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft Yahei", system-ui, sans-serif;
}
:root {
    --main-blue: #165DFF;
    --light-blue: #E8F3FF;
    --gray-text: #666;
    --dark-text: #1D2129;
    --light-gray: #F5F7FA;
}
body {
    color: var(--dark-text);
    background: #fff;
    line-height: 1.6;
}
/* 导航栏 */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 6%;
    box-shadow: 0 1px 4px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 99;
}
.logo {
    font-size: 22px;
    font-weight: 700;
    color: var(--main-blue);
}
.nav-menu {
    display: flex;
    gap: 36px;
    align-items: center;
}
.nav-menu a {
    text-decoration: none;
    color: var(--dark-text);
    font-size: 15px;
    transition: 0.2s;
}
.nav-menu a:hover {
    color: var(--main-blue);
}
.btn-blue {
    background: var(--main-blue);
    color: #fff;
    border: none;
    padding: 10px 22px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
}
.btn-blue:hover {
    background: #0E4BDB;
}
/* 首屏Banner */
.banner {
    padding: 80px 6%;
    text-align: center;
    background: linear-gradient(180deg, #F7FAFF 0%, #fff 100%);
}
.banner h1 {
    font-size: 42px;
    margin-bottom: 18px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}
.banner p.sub {
    font-size: 18px;
    color: var(--gray-text);
    max-width: 720px;
    margin: 0 auto 30px;
}
.banner-data {
    display: flex;
    gap: 40px;
    justify-content: center;
    margin: 36px 0;
}
.data-item strong {
    display: block;
    font-size: 28px;
    color: var(--main-blue);
}
.banner-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}
.btn-white {
    border: 1px solid var(--main-blue);
    color: var(--main-blue);
    background: transparent;
    padding: 10px 26px;
    border-radius: 6px;
    cursor: pointer;
}
/* 传统SEO VS GEO对比区块 */
.compare-wrap {
    padding: 70px 6%;
}
.section-title {
    text-align: center;
    font-size: 30px;
    margin-bottom: 50px;
}
.compare-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}
.card-gray {
    background: var(--light-gray);
    padding: 36px;
    border-radius: 10px;
}
.card-blue {
    background: var(--light-blue);
    padding: 36px;
    border-radius: 10px;
    border: 1px solid var(--main-blue);
}
.card h3 {
    font-size: 20px;
    margin-bottom: 20px;
}
.card ul li {
    margin: 14px 0;
    color: var(--gray-text);
}
/* 全平台覆盖板块 */
.platform-wrap {
    padding: 70px 6%;
    background: var(--light-gray);
}
.platform-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}
.platform-card {
    background: #fff;
    padding: 30px 24px;
    border-radius: 10px;
    text-align: center;
}
.platform-card h4 {
    font-size: 18px;
    margin: 12px 0 14px;
    color: var(--main-blue);
}
.platform-card p {
    font-size: 14px;
    color: var(--gray-text);
}
/* 四大核心优势 */
.advantage-wrap {
    padding: 70px 6%;
}
.adv-list {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}
.adv-card {
    padding: 30px 22px;
    border-radius: 10px;
    border: 1px solid #eee;
}
.adv-card h4 {
    font-size: 18px;
    margin-bottom: 12px;
}
.adv-card p {
    color: var(--gray-text);
    font-size: 14px;
}
/* 客户数据板块 */
.data-wrap {
    padding: 60px 6%;
    background: var(--light-blue);
}
.data-row {
    display: flex;
    justify-content: center;
    gap: 60px;
    text-align: center;
}
.data-block strong {
    font-size: 36px;
    color: var(--main-blue);
    display: block;
}
/* 案例预览 */
.case-wrap {
    padding: 70px 6%;
}
.case-list {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto 40px;
}
.case-card {
    border: 1px solid #eee;
    border-radius: 10px;
    overflow: hidden;
}
.case-img {
    width: 100%;
    height: 160px;
    background: #E8F3FF;
}
.case-text {
    padding: 20px;
}
.case-text h4 {
    margin-bottom: 8px;
}
.case-text p {
    color: var(--gray-text);
    font-size: 14px;
}
.center-btn {
    text-align: center;
}
/* 资讯预览 */
.article-wrap {
    padding: 70px 6%;
    background: var(--light-gray);
}
.art-list {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto 40px;
}
.art-card {
    background: #fff;
    border-radius: 10px;
    padding: 22px;
}
.art-card h4 {
    margin-bottom: 10px;
}
/* FAQ快捷入口 */
.faq-entry {
    padding: 60px 6%;
    text-align: center;
}
.faq-entry p {
    max-width: 600px;
    margin: 14px auto 30px;
    color: var(--gray-text);
    font-size: 16px;
}
/* 底部转化 */
.contact-wrap {
    padding: 70px 6%;
    background: #0F172A;
    color: #fff;
    text-align: center;
}
.contact-wrap h2 {
    font-size: 28px;
    margin-bottom: 16px;
}
.contact-wrap p {
    color: #B0B8C4;
    margin-bottom: 32px;
}
/* 页脚 */
footer {
    padding: 40px 6%;
    background: #0A101F;
    color: #949FB4;
    font-size: 14px;
}
.footer-box {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}
.footer-box h4 {
    color: #fff;
    margin-bottom: 16px;
    font-size: 16px;
}
.footer-box a {
    display: block;
    color: #949FB4;
    text-decoration: none;
    margin: 8px 0;
}
.copyright {
    margin-top: 40px;
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #1F2940;
}
/* 移动端自适应适配 */
@media screen and (max-width: 768px) {
    .nav-menu {
        flex-wrap: wrap;
        gap:15px;
        justify-content: center;
        margin-top:10px;
    }
    .header {
        flex-direction: column;
        gap:15px;
    }
    .banner h1 {
        font-size:28px;
    }
    .compare-box,.platform-list,.adv-list,.data-row,.case-list,.art-list {
        grid-template-columns: 1fr;
    }
    .footer-box {
        grid-template-columns:1fr;
        gap:25px;
    }
    .banner-data {
        flex-wrap: wrap;
    }
}