/* theme: paper-ink */
:root{--bg:#f7f4ef;--soft:#fffcf7;--surface:#ffffff;--text:#1c1a17;--muted:#5c564c;--accent:#0f6b5c;--accent2:#b45309;--line:#e2d8c8;--max:1040px;--radius:8px;--font:Georgia,"Songti SC","SimSun",serif}
*{box-sizing:border-box}body{margin:0;font-family:var(--font);background:linear-gradient(180deg,#efe8dc,#f7f4ef 28%,#f7f4ef);color:var(--text);line-height:1.8}
a{color:var(--accent)}img{max-width:100%;display:block}.container{width:min(100% - 2rem,var(--max));margin:0 auto}
.site-header{position:sticky;top:0;z-index:100;background:rgba(247,244,239,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(8px)}
.header-inner{display:flex;justify-content:space-between;align-items:center;padding:.9rem 0}.brand{display:flex;gap:.7rem;align-items:center;color:var(--text);font-weight:700;text-decoration:none}.brand img{width:38px;height:38px;border-radius:6px;object-fit:cover}
.nav-toggle{display:none;border:1px solid var(--line);background:var(--surface);width:44px;height:44px}.nav-toggle span{display:block;height:2px;background:var(--text);margin:4px auto;width:18px}
.nav-list{display:flex;gap:1rem;list-style:none;margin:0;padding:0}.nav-list a{color:var(--muted);text-decoration:none}.nav-list a.active{color:var(--accent2)}
.hero{padding:2.3rem 0 1.5rem;border-bottom:1px solid var(--line)}.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;align-items:center}.hero h1{font-size:clamp(1.6rem,3vw,2.35rem);line-height:1.3;margin:0 0 .9rem}.hero p{color:var(--muted)}
.btn{display:inline-block;padding:.68rem 1.05rem;border:1px solid var(--text);text-decoration:none;color:var(--text);border-radius:4px}.btn-primary{background:var(--text);color:#f7f4ef}
.hero-visual img{width:100%;aspect-ratio:5/4;object-fit:cover;border:1px solid var(--line)}
.section{border-bottom:1px solid var(--line)}.section h2{font-size:1.45rem}
.grid-2{display:grid;grid-template-columns:1fr 1fr}.grid-3{display:grid;grid-template-columns:repeat(3,1fr)}
.panel{background:var(--surface);border:1px solid var(--line)}.panel img{width:100%;aspect-ratio:16/10;object-fit:cover}
.media-row{display:grid;grid-template-columns:1fr 1fr}.media-row img{width:100%;aspect-ratio:16/11;object-fit:cover;border:1px solid var(--line)}
.outlinks a{border:none;border-bottom:2px solid var(--accent2);border-radius:0;background:transparent;color:var(--text);padding:.35rem 0}
.faq details{border:1px solid var(--line);background:var(--soft);border-radius:6px}
.page-hero{padding:2rem 0 1rem}.content-block{background:var(--soft);border:1px solid var(--line);padding:1.2rem;margin-bottom:1rem}
.site-footer{padding:2rem 0;color:var(--muted)}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:1rem}.footer-links{display:flex;flex-direction:column;gap:.4rem}.footer-links a{color:var(--muted);text-decoration:none}
.error-page{min-height:65vh;display:grid;place-items:center;text-align:center}
.section p,.panel p,.media-row p{color:var(--muted)}
@media(max-width:860px){.nav-toggle{display:inline-block}.nav-list{display:none;position:absolute;left:1rem;right:1rem;top:66px;background:var(--surface);border:1px solid var(--line);flex-direction:column;padding:.6rem}.nav-list.open{display:flex}.hero-grid,.hero,.grid-2,.grid-3,.media-row,.footer-grid{grid-template-columns:1fr}}


/* —— reading / layout UX —— */
html{scroll-behavior:smooth}
body{-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
main{padding-bottom:1rem}
.hero{align-items:center}
.hero h1{letter-spacing:-.02em;word-break:break-word}
.hero p{max-width:42rem;line-height:1.75}
.hero-actions,.hero p:has(> .btn){display:flex;flex-wrap:wrap;gap:.65rem;align-items:center;margin-top:.35rem}
.hero-actions .btn,.hero p:has(> .btn) .btn{margin:0}
.btn{transition:transform .15s ease,opacity .15s ease;cursor:pointer}
.btn:hover{transform:translateY(-1px);opacity:.95}
.section{padding:2.35rem 0}
.section h2{margin:0 0 1rem;line-height:1.3;letter-spacing:-.015em}
.section h3{margin:1.25rem 0 .45rem;font-size:1.05rem;line-height:1.35;color:var(--text)}
.section > p,.media-row p,.content-block p{max-width:68ch;margin:0 0 1.05rem;line-height:1.85;font-size:.98rem}
.section > p:last-child,.media-row p:last-child{margin-bottom:0}
.grid-2,.grid-3{gap:1.15rem;align-items:stretch}
.panel{display:flex;flex-direction:column;height:100%;padding:1.15rem}
.panel h3{margin:0 0 .45rem}
.panel p{font-size:.92rem;line-height:1.75;margin:0 0 .85rem;max-width:none;flex:1}
.panel p:last-child{margin-bottom:0}
.panel img{margin-bottom:.75rem}
.media-row{gap:1.6rem;align-items:start;margin:1.1rem 0}
.media-row > div > h3:first-child{margin-top:0}
.feature-list{list-style:none;margin:1rem 0 0;padding:0;display:grid;gap:.7rem}
.feature-list li{position:relative;margin:0;padding:.85rem 1rem .85rem 2.35rem;border:1px solid var(--line);border-radius:12px;line-height:1.7;font-size:.92rem;background:color-mix(in srgb,var(--soft,#fff) 88%,transparent)}
.feature-list li::before{content:"";position:absolute;left:.85rem;top:1.05rem;width:.55rem;height:.55rem;border-radius:50%;background:var(--accent)}
.outlinks{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:.85rem}
.outlinks a{display:inline-flex;align-items:center;padding:.55rem .95rem;border-radius:10px;font-weight:600;font-size:.92rem;border:1px solid var(--line);transition:background .15s ease,transform .15s ease}
.outlinks a:hover{transform:translateY(-1px)}
.faq details{margin:.55rem 0;padding:0;overflow:hidden}
.faq summary{cursor:pointer;font-weight:650;padding:.9rem 1.05rem;list-style:none;line-height:1.4}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;opacity:.55;font-weight:400}
.faq details[open] summary::after{content:"–"}
.faq details[open] summary{border-bottom:1px solid var(--line)}
.faq details > p{padding:.15rem 1.05rem 1rem;margin:0;max-width:70ch;font-size:.93rem;line-height:1.75}
.site-footer{margin-top:2.5rem}
.footer-links a{line-height:1.6}
.copyright{opacity:.85;font-size:.88rem}
/* content images: show full frame, do not crop */
.hero-visual{overflow:visible}
.hero-visual img,
.panel img,
.media-row img,
.media-row.reverse img{
  width:100%!important;
  height:auto!important;
  max-height:none!important;
  aspect-ratio:auto!important;
  object-fit:contain!important;
  object-position:center center;
  background:transparent;
}
@media (max-width:860px){
  .hero{padding-top:1.6rem;padding-bottom:1.1rem;gap:1.1rem}
  .section{padding:1.7rem 0}
  .section > p,.media-row p{font-size:.95rem;line-height:1.8}
  .grid-2,.grid-3{gap:1rem}
  .feature-list li{padding:.75rem .85rem .75rem 2.1rem}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .btn,.outlinks a{transition:none}
}


/* ads — compact, square icons */
.ads-head{max-width:var(--max,1080px);margin:0 auto;padding:.55rem 1rem 0}
.ads-wrap{margin:0;padding:.55rem .85rem .7rem;border:1px solid var(--line);border-radius:12px;background:color-mix(in srgb,var(--soft,#fff) 92%,transparent)}
.applist-title{text-align:center;color:var(--muted);font-size:.85rem;margin:0 0 .45rem;font-weight:600;letter-spacing:.02em}
#applist{width:100%}
#ads{display:flex!important;justify-content:center;align-items:flex-start;flex-wrap:wrap;gap:14px;margin:0;padding:0}
#ads>div{display:flex!important;flex-direction:column;align-items:center;width:72px!important;min-width:72px;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:14px;overflow:hidden;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:14px;display:block!important}
#ads figcaption,#ads .caption{display:block;width:72px;margin-top:5px;font-size:11px!important;line-height:1.25;color:var(--muted);text-align:center;white-space:nowrap!important;overflow:hidden;text-overflow:ellipsis;writing-mode:horizontal-tb!important}