:root{
  --bg:#f7f5f1;
  --paper:#fff;
  --ink:#1a1a1a;
  --mute:#7a776f;
  --line:#e6e2da;
  --max:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);
  font:16px/1.9 "Microsoft YaHei","Segoe UI",serif;
  background:var(--bg);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.wrap{width:min(var(--max),calc(100% - 64px));margin:auto}
nav{
  position:sticky;top:0;z-index:20;height:80px;
  background:rgba(247,245,241,.92);border-bottom:1px solid var(--line);
}
.nav,.hero-grid,.split,.visual,.faq-layout,.help-layout,.cta-in,.footer{display:grid;gap:48px;align-items:center}
.nav{height:80px;grid-template-columns:auto 1fr auto;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:500;letter-spacing:3px;font-size:13px}
.brand b{font-weight:500;border-bottom:1px solid var(--ink);padding-bottom:2px}
.links{display:flex;justify-content:center;gap:28px;font-size:13px;letter-spacing:.4px;color:var(--mute)}
.button{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:40px;padding:0 18px;font-size:12px;letter-spacing:1.6px;
  font-weight:600;color:#fff;background:var(--ink);border:0;
}
.button.ghost{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.hero{padding:72px 0 96px}
.hero-grid{grid-template-columns:1fr;text-align:center;min-height:auto}
.eyebrow{color:var(--mute);font-size:11px;letter-spacing:3px;font-weight:600}
h1,h2{margin:18px 0 20px;line-height:1.2;font-weight:500}
.hero h1{font-size:clamp(32px,5vw,56px);max-width:16ch;margin-left:auto;margin-right:auto}
.hero h1 span{display:block;font-size:.52em;letter-spacing:.8px;color:var(--mute);margin-top:10px}
p,.lead{color:var(--mute)}
.hero p{max-width:42em;margin:0 auto}
.actions,.micro{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;justify-content:center}
.micro span{font-size:11px;letter-spacing:1px;color:var(--mute)}
.hero-fig{margin:48px auto 0;max-width:760px}
.hero-fig img{width:100%;aspect-ratio:16/10;object-fit:cover}
.caption{margin-top:10px;font-size:11px;letter-spacing:1px;color:var(--mute)}
.section{padding:96px 0}
.head{max-width:560px;margin:0 auto 48px;text-align:center}
.head h2,h2{font-size:clamp(24px,3.4vw,36px)}
.grid6,.review-grid,.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card,.review,.download-card,.article,.scene{
  padding:28px 8px;background:transparent;border:0;border-top:1px solid var(--line);
}
.icon{font-size:11px;letter-spacing:2px;color:var(--mute)}
.card h3{margin:14px 0 8px;font-weight:500}
.split,.visual,.faq-layout{grid-template-columns:1fr 1fr;gap:64px}
.shot img,.visual img{width:100%;aspect-ratio:16/10;object-fit:cover}
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:24px 0 32px}
.scene{padding:16px 0}
.scene b{display:block;font-size:11px;letter-spacing:2px;color:var(--mute);font-weight:500}
.visual{gap:48px;align-items:start}
.visual-copy{padding:0}
.metrics{display:flex;gap:36px;margin:28px 0 32px;justify-content:flex-start}
.metrics b{display:block;font-size:28px;font-weight:500}
.metrics small{font-size:11px;letter-spacing:1px}
.person{display:flex;gap:10px;align-items:center;margin-top:18px}
.avatar{
  width:28px;height:28px;display:grid;place-items:center;
  border:1px solid var(--ink);font-size:11px;
}
.person small{display:block;color:var(--mute);font-size:12px}
.faq-layout{grid-template-columns:.85fr 1.15fr}
details{border-bottom:1px solid var(--line)}
summary{padding:18px 0;font-weight:500;cursor:pointer;list-style:none}
.cta{padding:0 0 96px}
.cta-in{grid-template-columns:1fr auto;padding:0;border-top:1px solid var(--line);padding-top:36px}
.page-head{padding:96px 0 8px;text-align:center}
.help-layout{grid-template-columns:200px 1fr;align-items:start;gap:48px}
.side{padding:0;border-top:1px solid var(--line)}
.side a{display:block;padding:10px 0;color:var(--mute);font-size:13px}
.policy{margin-top:24px;padding:20px 0;border-top:1px solid var(--line)}
.shot{margin:28px 0}
footer{padding:56px 0 24px;border-top:1px solid var(--line)}
.footer{grid-template-columns:1.4fr repeat(3,1fr);align-items:start;gap:24px}
.footer a{display:block;margin:8px 0;color:var(--mute);font-size:13px}
.footer h4{font-weight:500;font-size:12px;letter-spacing:2px}
.copy{margin-top:36px;padding-top:16px;border-top:1px solid var(--line);color:var(--mute);font-size:12px}
@media(max-width:860px){
  .wrap{width:min(var(--max),calc(100% - 32px))}
  .links{display:none}
  .hero-grid,.split,.visual,.faq-layout,.help-layout,.cta-in,.footer{grid-template-columns:1fr}
  .grid6,.review-grid,.cards,.scene-grid{grid-template-columns:1fr 1fr}
  .hero{padding:40px 0 64px}
  .section{padding:64px 0}
}
@media(max-width:560px){.grid6,.review-grid,.cards,.scene-grid,.footer{grid-template-columns:1fr}}

@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}