:root{
  --bg:#e8e4de;
  --ink:#2a322e;
  --muted:#5a635c;
  --line:#c4bdb4;
  --soft:#faf7f3;
  --brand:#4a7c59;
  --brand-deep:#354f44;
  --brand-light:#dce8dd;
  --brand-glow:rgba(74,124,89,.24);
  --band:#3d5a48;
  --band-mid:#52796f;
  --warm:#a89888;
  --warm-light:#d9d0c6;
  --max:1080px;
  --shadow:0 20px 48px rgba(61,90,72,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{
  margin:0;
  font-family:"Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:
    radial-gradient(880px 400px at 50% -6%,rgba(82,121,111,.16),transparent 58%),
    radial-gradient(620px 340px at 100% 14%,rgba(168,152,136,.1),transparent 52%),
    var(--bg);
  line-height:1.86;
}
a{color:var(--brand-deep)}
img{max-width:100%;height:auto;display:block}
.container{width:min(100% - 2rem,var(--max));margin-inline:auto}

.topbar{
  background:linear-gradient(90deg,var(--band),var(--band-mid));
  color:var(--warm-light);
  font-size:.86rem;
  padding:.45rem 0;
}
.topbar .container{display:flex;justify-content:space-between;align-items:center;gap:.75rem}
.topbar-brand{font-weight:700;letter-spacing:.03em}
.topbar-domain{opacity:.92;font-family:ui-monospace,monospace;font-size:.82rem}

.site-header{
  position:sticky;top:0;z-index:40;
  background:rgba(232,228,222,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
}
.header-inner{position:relative;display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:1rem}
.brand{display:flex;align-items:center;gap:.75rem;text-decoration:none;color:inherit}
.brand img{width:44px;height:44px;border-radius:12px;object-fit:cover;border:2px solid var(--brand-light)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:1.1rem;color:var(--band)}
.brand-text span{font-size:.78rem;color:var(--muted)}
.nav{display:flex;align-items:center;gap:.15rem;flex-wrap:wrap}
.nav a{
  text-decoration:none;color:var(--ink);
  padding:.46rem .7rem;border-radius:8px;font-size:.92rem;
}
.nav a:hover,.nav a.active{background:var(--brand-light);color:var(--brand-deep)}
.nav a.btn{
  background:var(--brand);color:#fff;font-weight:700;margin-left:.2rem;border-radius:999px;
}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:var(--soft);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.menu-toggle span{width:18px;height:2px;background:var(--ink);display:block}

.ads-slot{padding:.85rem 0 0}
.ads-wrap{margin:0;padding:.75rem 1rem 1rem;border:1px solid var(--line);border-radius:14px;background:var(--soft)}
.ads-head{max-width:var(--max);margin:0 auto;padding:0}
.applist-title{text-align:center;color:var(--muted);font-size:.95rem;margin:0 0 .55rem}
#applist{width:100%}
#ads{display:flex!important;justify-content:center;align-items:flex-start;flex-wrap:wrap;gap:12px;margin:0;padding:0;background:transparent}
#ads>div{display:flex!important;flex-direction:column;align-items:center;width:72px!important;min-width:72px;box-sizing:border-box;flex:0 0 72px}
#ads figure{margin:0;padding:0;width:72px;display:flex;flex-direction:column;align-items:center}
#ads a{display:block;width:65px;height:65px;border-radius:16px;overflow:hidden;text-decoration:none;flex-shrink:0}
#ads img{width:65px!important;height:65px!important;max-width:65px!important;max-height:65px!important;object-fit:cover!important;border-radius:16px;display:block!important;border:0;background:var(--warm-light)}
#ads figcaption,#ads .caption{display:block;width:72px;margin-top:6px;height:auto!important;min-height:16px;font-size:11px!important;line-height:1.2;color:var(--muted);text-align:center;white-space:nowrap!important;overflow:hidden;text-overflow:ellipsis;writing-mode:horizontal-tb!important}

.stack-hero{padding:2rem 0 1.2rem;text-align:center}
.stack-hero .hero-card{
  background:var(--soft);border:1px solid var(--line);border-radius:24px;
  padding:clamp(1.6rem,4vw,2.8rem) clamp(1.2rem,3vw,2rem) 0;
  box-shadow:var(--shadow);overflow:hidden;
  border-top:4px solid var(--brand);
}
.stack-hero .badge{
  display:inline-block;padding:.35rem .9rem;border-radius:999px;
  background:var(--brand-light);color:var(--brand-deep);font-size:.82rem;font-weight:700;
  margin-bottom:1rem;letter-spacing:.04em;
}
.stack-hero h1{
  margin:0 auto .85rem;max-width:24ch;
  font-family:"Songti SC","Noto Serif SC","Source Han Serif SC",serif;
  font-size:clamp(1.75rem,4vw,2.6rem);line-height:1.28;color:var(--band);
}
.stack-hero .lead{
  margin:0 auto 1.25rem;max-width:42rem;color:var(--muted);font-size:1.04rem;
}
.stack-hero .cta-row{display:flex;flex-wrap:wrap;gap:.7rem;justify-content:center;margin-bottom:1.6rem}
.cta{
  display:inline-flex;align-items:center;justify-content:center;
  padding:.78rem 1.35rem;border-radius:999px;text-decoration:none;font-weight:700;
}
.cta-primary{background:var(--brand);color:#fff;box-shadow:0 8px 24px var(--brand-glow)}
.cta-ghost{border:1px solid var(--line);color:var(--ink);background:#fff}
.stack-hero .hero-visual{
  margin:0 -1px -1px;border-top:1px solid var(--line);
  background:linear-gradient(180deg,var(--warm-light),#fff);
}
.stack-hero .hero-visual img{width:100%;max-height:420px;object-fit:cover;margin:0 auto}

.pill-nav{
  display:flex;flex-wrap:wrap;gap:.55rem;justify-content:center;
  padding:1.2rem 0 .4rem;
}
.pill-nav a{
  text-decoration:none;padding:.5rem 1rem;border-radius:999px;
  background:var(--soft);border:1px solid var(--line);color:var(--ink);font-size:.9rem;font-weight:600;
}
.pill-nav a:hover{border-color:var(--brand);color:var(--brand-deep);background:var(--brand-light)}

.section{padding:1.4rem 0}
.section h2{
  margin:0 0 .75rem;
  font-family:"Songti SC","Noto Serif SC",serif;
  font-size:clamp(1.22rem,2.2vw,1.62rem);color:var(--band);
}
.section p{margin:0 0 1rem;color:var(--ink)}
.prose{
  background:var(--soft);border:1px solid var(--line);border-radius:18px;
  padding:clamp(1.1rem,2.5vw,1.85rem);
}
.prose h2,.prose h3{scroll-margin-top:88px}
.prose h3{margin:1.35rem 0 .5rem;font-size:1.1rem;color:var(--band-mid)}

.feature-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin:1.1rem 0;
}
.feature-card{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:1.05rem 1.1rem;
  border-top:3px solid var(--brand);
}
.feature-card h3{margin:0 0 .4rem;font-size:1rem;color:var(--band)}
.feature-card .tag{color:var(--brand);font-weight:700;font-size:.88rem;margin-bottom:.35rem}
.feature-card p{margin:0;color:var(--muted);font-size:.93rem}

.media-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;margin:1rem 0}
.media-grid figure,.gallery figure,.shot-row figure{
  margin:0;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;
}
.media-grid figcaption,.gallery figcaption,.shot-row figcaption{
  padding:.55rem .8rem;font-size:.87rem;color:var(--muted);
}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin:1rem 0}
.shot-row{display:grid;grid-template-columns:1fr;gap:1rem;margin:1rem 0}

.band{
  margin:1.4rem 0;padding:1.7rem 0;
  background:linear-gradient(135deg,var(--band),var(--band-mid));
  color:var(--warm-light);border-radius:20px;
}
.band .container{width:min(100% - 2rem,var(--max))}
.band h2{color:#fff;margin:0 0 .65rem}
.band p{color:var(--warm-light);margin:0 0 1rem;opacity:.92}
.price-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:.85rem}
.price-grid figure{margin:0;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:14px;overflow:hidden}
.price-grid figcaption{padding:.5rem .65rem;font-size:.84rem;color:var(--warm-light)}

.compare-table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.93rem}
.compare-table th,.compare-table td{
  border:1px solid var(--line);padding:.65rem .75rem;text-align:left;
}
.compare-table th{background:var(--brand-light);color:var(--brand-deep);font-weight:700}
.compare-table tr:nth-child(even) td{background:#f0f3ef}

.outlinks{display:flex;flex-wrap:wrap;gap:.65rem;margin:1.1rem 0 0;justify-content:flex-start}
.outlinks a{
  display:inline-flex;align-items:center;
  padding:.55rem 1.05rem;border-radius:999px;text-decoration:none;font-weight:700;
  border:1px solid rgba(74,124,89,.35);color:var(--brand-deep);background:var(--brand-light);
}

.faq details{
  border:1px solid var(--line);background:#fff;border-radius:14px;
  padding:.85rem 1rem;margin:.5rem 0;
}
.faq summary{cursor:pointer;font-weight:700;color:var(--band)}
.faq p{margin:.55rem 0 0;color:var(--muted)}

.site-footer{
  margin-top:2rem;padding:2rem 0 1.2rem;
  background:var(--band);color:var(--warm);
}
.footer-grid{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.footer-grid a{color:var(--warm-light);margin-right:.85rem;text-decoration:none}
.copyright{margin-top:1rem;font-size:.86rem;opacity:.88}

.page-main{padding:1.5rem 0 2.2rem}
.page-hero{text-align:center;padding:.5rem 0 1rem}
.page-hero h1{
  margin:0 0 .65rem;
  font-family:"Songti SC","Noto Serif SC",serif;
  font-size:clamp(1.4rem,2.6vw,1.95rem);color:var(--band);
}
.page-hero p{color:var(--muted);margin:0}
.simple-card{
  background:var(--soft);border:1px solid var(--line);border-radius:16px;
  padding:1.35rem;margin-top:1rem;
}
.simple-card h2{margin:1.15rem 0 .45rem;font-size:1.1rem;color:var(--band-mid)}

.error-page{min-height:100vh;display:grid;place-items:center;padding:2rem;background:var(--bg)}
.error-box{
  max-width:520px;width:100%;background:var(--soft);border:1px solid var(--line);
  border-radius:18px;padding:1.5rem;text-align:center;box-shadow:var(--shadow);
}
.error-box h1{font-size:2.8rem;margin:.2rem 0;color:var(--brand)}

@media (max-width:960px){
  .menu-toggle{display:flex}
  .nav{display:none;position:absolute;left:0;right:0;top:72px;width:100%;z-index:50;box-sizing:border-box;
    background:var(--bg);flex-direction:column;align-items:stretch;
    padding:1rem;border-bottom:1px solid var(--line);
  }
  .nav.open{display:flex}
  .nav a.btn{margin-left:0}
  .feature-grid,.media-grid,.gallery,.price-grid{grid-template-columns:1fr}
  .price-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  .price-grid{grid-template-columns:1fr}
  .topbar .container{justify-content:center}
}