:root{
  --canvas:#efe4cf;
  --ink:#3a3126;
  --mute:#6a5d4c;
  --thread:#8b5a3c;
  --stitch:#c9b08a;
  --max:1140px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);
  font:16px/1.75 "Microsoft YaHei","Segoe UI",sans-serif;
  background:
    repeating-linear-gradient(0deg,rgba(139,90,60,.04) 0 1px,transparent 1px 8px),
    repeating-linear-gradient(90deg,rgba(139,90,60,.04) 0 1px,transparent 1px 8px),
    var(--canvas);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.wrap{width:min(var(--max),calc(100% - 40px));margin:auto}
nav{position:sticky;top:0;z-index:20;height:72px;background:rgba(239,228,207,.92);border-bottom:2px dashed var(--stitch)}
.nav,.hero-grid,.split,.visual,.faq-layout,.help-layout,.cta-in,.footer{display:grid;gap:28px;align-items:center}
.nav{height:72px;grid-template-columns:auto 1fr auto}
.brand{display:flex;align-items:center;gap:8px;font-weight:900}
.brand b{width:30px;height:30px;display:grid;place-items:center;border:2px dashed var(--thread);color:var(--thread);border-radius:6px}
.links{display:flex;justify-content:center;gap:26px;font-size:14px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;font-weight:800;color:#fff;background:var(--thread);border-radius:6px}
.button.ghost{background:transparent;color:var(--thread);border:2px dashed var(--thread)}
.hero{padding:42px 0 70px}
.hero-grid{grid-template-columns:1.05fr .95fr;min-height:560px}
.eyebrow{color:var(--thread);font-size:12px;font-weight:800;letter-spacing:1.6px}
h1,h2{margin:10px 0 16px;line-height:1.16}
.hero h1{font-size:clamp(34px,5.4vw,60px)}
.hero h1 span{color:var(--thread)}
p,.lead{color:var(--mute)}
.actions,.micro{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.micro span{padding:6px 10px;border:1px dashed var(--thread);font-size:12px;background:rgba(255,255,255,.35)}
.patch{position:relative;padding:10px;background:#f7efe0;border:2px dashed var(--thread);box-shadow:0 10px 24px rgba(90,70,50,.08)}
.patch img,.shot img,.visual img{width:100%;aspect-ratio:16/10;object-fit:cover}
.tag{position:absolute;padding:10px 12px;font-size:12px;background:#fff8ec;border:1px dashed var(--thread)}
.a{left:8px;bottom:16px}
.b{right:8px;top:16px}
.section{padding:80px 0}
.head{max-width:720px;margin-bottom:30px}
.head h2,h2{font-size:clamp(28px,4.2vw,44px)}
.grid6,.review-grid,.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.card,.review,.download-card,.article,.scene{padding:22px;background:#f7efe0;border:1px dashed var(--stitch)}
.icon{color:var(--thread);font-size:22px}
.card h3{margin:12px 0 8px}
.split,.visual,.faq-layout{grid-template-columns:1fr 1fr;gap:44px}
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0 24px}
.scene b{display:block;color:var(--thread);font-size:12px}
.visual{gap:0}
.visual-copy{padding:48px 36px;background:#f7efe0;border:2px dashed var(--thread)}
.metrics{display:flex;gap:26px;margin:20px 0 26px}
.metrics b{display:block;color:var(--thread);font-size:28px}
.person{display:flex;gap:10px;align-items:center;margin-top:14px}
.avatar{width:36px;height:36px;display:grid;place-items:center;border:1px dashed var(--thread);color:var(--thread);font-weight:800}
.person small{display:block;color:var(--mute)}
.faq-layout{grid-template-columns:.8fr 1.2fr}
details{border-bottom:1px dashed var(--stitch)}
summary{padding:16px 6px;font-weight:800;cursor:pointer;list-style:none}
.cta{padding:20px 0 70px}
.cta-in{grid-template-columns:1fr auto;padding:24px;background:#f7efe0;border:2px dashed var(--thread)}
.page-head{padding:78px 0 24px}
.help-layout{grid-template-columns:220px 1fr;align-items:start}
.side{padding:14px}
.side a{display:block;padding:8px 6px}
.policy{margin-top:16px;padding:16px;border:1px dashed var(--stitch);background:#fff8ec}
.shot{margin:20px 0}
footer{padding:46px 0 16px;border-top:2px dashed var(--stitch);background:#e7d9be}
.footer{grid-template-columns:1.4fr repeat(3,1fr);align-items:start}
.footer a{display:block;margin:8px 0;color:var(--mute)}
.copy{margin-top:24px;padding-top:12px;border-top:1px dashed var(--stitch)}
@media(max-width:860px){
  .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}
  .visual-copy{padding:28px}
}
@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}}