:root{
  --bg:#FAFAF8; --ink:#17141F; --sub:#6B6478; --line:#E4E0DE;
  --ac:#6D28D9; --soft:#F2EEF9; --ink-2:#0F0C16;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.8;font-size:17px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1000px;margin:0 auto;padding:0 32px}
/*sec*/
.sec-soft{background:var(--soft)}
.sec-kick{font-size:13px;letter-spacing:.3em;color:var(--ac);text-transform:uppercase;margin-bottom:18px}
h2{font-size:44px;font-weight:800;line-height:1.2;margin-bottom:18px;letter-spacing:-.01em}
.sec-p{font-size:18px;color:var(--sub);margin-bottom:8px}

/* 极简顶栏 */
.top{position:sticky;top:0;z-index:50;background:rgba(250,250,248,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.top-in{max-width:1000px;margin:0 auto;padding:16px 32px;display:flex;align-items:center}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:.01em}
.brand img{border-radius:7px}
.top-cta{margin-left:auto;background:var(--ac);color:#fff;padding:9px 22px;border-radius:999px;font-size:15px;font-weight:600}
.top-cta:hover{background:#5B21B6}

/* 巨型标题首屏 */
.hero{padding:120px 0 104px}
.hero h1{font-size:92px;font-weight:800;line-height:1.05;letter-spacing:-.02em;margin-bottom:36px}
.lead{font-size:21px;max-width:620px;color:var(--sub);margin-bottom:44px}
.cta{display:inline-block;font-size:18px;font-weight:700;color:var(--ac);border-bottom:2px solid var(--ac);padding-bottom:4px}
.cta:hover{color:#5B21B6;border-color:#5B21B6}

/* 定义列表 */
.deflist{margin-top:40px;border-top:2px solid var(--ink)}
.deflist .row{display:grid;grid-template-columns:200px 1fr;gap:30px;padding:26px 0;border-bottom:1px solid var(--line);align-items:baseline}
.deflist dt{font-size:22px;font-weight:700}
.deflist dd{color:var(--sub);font-size:16px}

/* 通栏滑动带 */
.band{background:var(--ink-2);color:#EDE9F5;padding:110px 0}
.band-head{margin-bottom:44px}
.band-head .sec-kick{color:#A78BFA}
.band-head h2{color:#fff}
.viewer-wrap{position:relative;max-width:1080px;margin:0 auto;padding:0 32px}
.viewer{overflow:hidden}
.track{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none}
.track::-webkit-scrollbar{display:none}
.slide{scroll-snap-align:center;flex:0 0 100%;margin:0;display:flex;justify-content:center}
.slide img{width:auto;max-height:620px;border-radius:0}
.arrow{position:absolute;top:50%;transform:translateY(-50%);width:46px;height:46px;border-radius:50%;border:none;background:rgba(255,255,255,.92);color:#17141F;font-size:24px;cursor:pointer;z-index:3}
.arrow.prev{left:8px}
.arrow.next{right:8px}
.arrow:hover{background:#fff}
.bar{display:flex;align-items:center;gap:14px;margin-top:26px;max-width:1080px}
.dots{display:flex;gap:8px}
.dots button{width:8px;height:8px;border-radius:50%;border:none;background:#4A4356;cursor:pointer;padding:0}
.dots button[aria-current="true"]{background:#A78BFA;width:22px;border-radius:4px}
.now{font-size:14px;color:#A99FC0;min-width:64px}

/* 下载 - 入口卡 */
.store{display:flex;flex-wrap:wrap;gap:18px;margin:40px 0 26px}
.store:not([hidden]){display:flex}
.entry{flex:1;min-width:200px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;display:flex;flex-direction:column;gap:8px}
.entry:hover{border-color:var(--ac)}
.e-ico{font-size:22px;color:var(--ac)}
.entry b{font-size:18px}
.entry i{font-style:normal;font-size:14px;color:var(--sub)}
.check{list-style:none;max-width:680px}
.check li{position:relative;padding-left:26px;margin-bottom:12px;color:var(--sub);font-size:15px}
.check li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;background:var(--ac);border-radius:2px}
.no-dl .dl{display:none}
.no-dl .top-cta{display:none}

/* 安装小步骤 */
.mini-steps{list-style:none;margin-top:40px;display:flex;flex-wrap:wrap;gap:18px 40px}
.mini-steps li{flex:1;min-width:220px;border-left:3px solid var(--ac);padding-left:18px}
.mini-steps b{display:block;font-size:18px;margin-bottom:6px}
.mini-steps span{color:var(--sub);font-size:15px}

/* 问答 */
.qa{margin-top:40px;max-width:780px}
.topic{margin-top:34px;color:var(--sub);font-size:16px;max-width:820px}
.band .sec-p{color:#A99FC0}
.qa details{border-bottom:1px solid var(--line);padding:22px 0}
.qa summary{cursor:pointer;font-size:18px;font-weight:600;list-style:none;position:relative;padding-right:30px}
.qa summary::after{content:"+";position:absolute;right:0;top:0;font-size:22px;color:var(--ac)}
.qa details[open] summary::after{content:"\2013"}
.qa p{color:var(--sub);font-size:16px;margin-top:14px;max-width:700px}

/* 页脚 */
.ft{background:var(--ink-2);color:var(--sub);padding:74px 0 40px}
.ft-in{display:grid;grid-template-columns:repeat(4,1fr);gap:40px;max-width:1000px;margin:0 auto;padding:0 32px}
.ft-col b{display:block;color:#fff;font-size:15px;margin-bottom:18px;font-weight:700}
.ft-col a{display:block;color:var(--sub);font-size:15px;margin-bottom:12px}
.ft-col a:hover{color:var(--ac)}
.ft-copy{text-align:center;margin-top:54px;color:#6B6280;font-size:14px;max-width:1000px;margin-left:auto;margin-right:auto;padding:0 32px}

@media(max-width:900px){
  .wrap{padding:0 22px}
  .sec{padding:84px 0}
  .hero{padding:110px 0 96px}
  .hero h1{font-size:56px}
  h2{font-size:32px}
  .deflist .row{grid-template-columns:140px 1fr;gap:18px}
  .ft-in{grid-template-columns:repeat(2,1fr)}
  .slide img{max-height:520px}
}
@media(max-width:480px){
  .hero h1{font-size:42px}
  .deflist .row{grid-template-columns:1fr;gap:6px}
  .entry{min-width:100%}
}

/* 404 */
.nf-wrap{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;background:var(--ink-2);color:var(--ink);padding:40px}
.nf-code{font-size:120px;color:var(--ac);line-height:1;margin-bottom:10px;font-weight:800}
.nf-h{font-size:26px;color:#fff;margin-bottom:14px}
.nf-p{color:var(--sub);margin-bottom:30px;max-width:480px}
.nf-btn{background:var(--ac);color:#fff;padding:13px 30px;border-radius:999px;font-weight:600}
.nf-btn:hover{background:#5B21B6}