:root{
  --bg:#FAFAF8; --ink:#1C1C1A; --sub:#6A6A64; --line:#E6E6E0;
  --ac:#2F8F3E; --ink-2:#15160F; --surf:#FFFFFF; --ac-soft:#E7F1E6;
}
*{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:1.7;font-size:17px;-webkit-font-smoothing:antialiased;word-break:keep-all}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 32px}
.sec{padding:96px 0}
.sec-ink{background:var(--ink-2);color:#ECEFE4}
.sec-ink .sec-p{color:#B9B2C9}
.sec-ink .sec-kick{color:var(--ac)}
.sec-kick{font-size:13px;letter-spacing:.32em;color:var(--ac);text-transform:uppercase;margin-bottom:18px}
.sec-kick.light{color:var(--ac)}
h2{font-size:40px;font-weight:800;line-height:1.2;margin-bottom:10px;letter-spacing:-.01em}
.sec-p{font-size:18px;color:var(--sub);margin-bottom:8px}

/* 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:1080px;margin:0 auto;padding:14px 32px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:21px;letter-spacing:-.01em}
.brand img{border-radius:8px}
.top-nav{margin-left:auto;display:flex;gap:26px;font-size:15px;color:var(--sub)}
.top-nav a:hover{color:var(--ac)}
.top-cta{background:var(--ac);color:#fff;padding:9px 22px;border-radius:6px;font-size:15px;font-weight:700}
.top-cta:hover{opacity:.9}

/* 首屏 - 巨型标题 */
.hero{padding:104px 0 84px}
.hero .kicker{font-size:13px;letter-spacing:.32em;text-transform:uppercase;color:var(--ac);margin-bottom:26px}
.hero h1{font-size:90px;font-weight:800;line-height:1.02;letter-spacing:-.02em;margin-bottom:30px}
.lead{font-size:20px;color:var(--sub);max-width:620px;margin-bottom:38px}
.btn{display:inline-block;padding:15px 34px;border-radius:6px;font-size:16px;font-weight:700}
.btn-p{background:var(--ac);color:#fff}
.btn-p:hover{opacity:.9}

/* 功能 - 定义列表 */
.deflist{margin-top:44px}
.deflist .row{display:grid;grid-template-columns:200px 1fr;gap:30px;padding:22px 0;border-top:1px solid var(--line);align-items:baseline}
.deflist .row:last-child{border-bottom:1px solid var(--line)}
.deflist dt{font-size:22px;font-weight:800;letter-spacing:-.01em}
.deflist dd b{display:block;font-size:18px;margin-bottom:6px}
.deflist dd p{color:var(--sub);font-size:16px;max-width:640px}
.topic{margin-top:34px;color:var(--sub);font-size:16px;max-width:860px}

/* 界面展示 - 通栏无框滑动带 */
.band{position:relative;padding-top:58px;margin-top:36px}
.band .track{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:22px;scrollbar-width:none;padding-bottom:10px}
.band .track::-webkit-scrollbar{display:none}
.band .slide{flex:0 0 330px;scroll-snap-align:start;margin:0}
.band .slide img{width:100%;height:auto;border-radius:14px;box-shadow:0 14px 34px rgba(0,0,0,.14)}
.band .arrow{position:absolute;top:0;width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:var(--surf);color:var(--ink);font-size:22px;cursor:pointer;z-index:3}
.band .arrow.prev{right:58px}
.band .arrow.next{right:0}
.band .arrow:hover{border-color:var(--ac);color:var(--ac)}
.bar{display:flex;align-items:center;gap:14px;margin-top:22px}
.dots{display:flex;gap:8px}
.dots button{width:8px;height:8px;border-radius:50%;border:none;background:var(--line);cursor:pointer;padding:0}
.dots button[aria-current="true"]{background:var(--ac);width:22px;border-radius:4px}
.now{font-size:14px;color:#B9B2C9;min-width:64px}

/* 下载 - 扁平入口卡 */
.store{display:flex;flex-wrap:wrap;gap:16px;margin:38px 0 24px}
.store:not([hidden]){display:flex}
.entry{display:flex;flex-direction:column;gap:5px;background:var(--surf);border:1px solid var(--line);border-radius:10px;padding:20px 22px;min-width:200px;flex:1}
.entry:hover{border-color:var(--ac)}
.entry b{font-size:17px}
.entry i{font-style:normal;font-size:13px;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:1px}
.no-dl .dl{display:none}
.no-dl .top-cta{display:none}

/* 安装 - 迷你步骤 */
.mini-steps{list-style:none;margin-top:44px;display:grid;grid-template-columns:repeat(2,1fr);gap:28px 50px}
.mini-steps li{border-top:2px solid var(--ac);padding-top:18px}
.mini-steps b{display:block;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:15px;color:var(--ac);margin-bottom:8px;letter-spacing:.03em}
.mini-steps p{color:#B9B2C9;font-size:15px}

/* 问答 */
.qa{margin-top:40px;max-width:840px}
.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:740px}

/* 页脚 */
.ft{background:#F2F2EE;color:#6A6A64;padding:74px 0 40px;border-top:1px solid var(--line)}
.ft-in{display:grid;grid-template-columns:repeat(4,1fr);gap:40px;max-width:1080px;margin:0 auto;padding:0 32px}
.ft-col b{display:block;color:#1C1C1A;font-size:15px;margin-bottom:18px;font-weight:700}
.ft-col a{display:block;color:#6A6A64;font-size:15px;margin-bottom:12px}
.ft-col a:hover{color:var(--ac)}
.ft-copy{text-align:center;margin-top:54px;color:#9A9A92;font-size:14px;max-width:1080px;margin-left:auto;margin-right:auto;padding:0 32px}

@media(max-width:900px){
  .wrap{padding:0 22px}
  .sec{padding:90px 0}
  .hero{padding:96px 0 78px}
  .hero h1{font-size:56px}
  .deflist .row{grid-template-columns:140px 1fr;gap:20px}
  h2{font-size:30px}
  .band .slide{flex-basis:280px}
  .mini-steps{grid-template-columns:1fr}
  .ft-in{grid-template-columns:repeat(2,1fr)}
  .top-nav{display:none}
}
@media(max-width:480px){
  .hero h1{font-size:42px}
  .deflist .row{grid-template-columns:1fr;gap:8px}
  .entry{min-width:100%}
  .band .arrow{display:none}
}

/* 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:#ECEFE4;padding:40px}
.nf-code{font-size:120px;color:var(--ac);line-height:1;margin-bottom:10px;font-weight:800}
.nf-h{font-size:26px;margin-bottom:14px}
.nf-p{color:#B9B2C9;margin-bottom:30px;max-width:480px}
.nf-btn{background:var(--ac);color:#fff;padding:13px 30px;border-radius:6px;font-weight:700}
.nf-btn:hover{opacity:.9}