.at-hero{background:var(--surface-page);border-bottom:1px solid var(--border-hairline)}.at-hero__inner{max-width:760px;padding:var(--section-y) var(--gutter);text-align:center;margin:0 auto}.at-hero__h1{margin:var(--space-4) 0 0;font-family:var(--font-display);font-weight:600;font-size:var(--text-display-lg);color:var(--text-heading);line-height:1.1}.at-intro{margin:var(--space-6) auto 0;gap:var(--space-4);flex-direction:column;max-width:68ch;display:flex}.lang-zh .at-intro{max-width:40em}.at-intro p{font-size:var(--text-body-lg);color:var(--text-muted);margin:0;line-height:1.65}.at-hero__crumb{font-size:var(--text-body-sm);color:var(--text-muted)}.at-hero__crumb a{color:var(--text-muted);text-decoration:underline}.at-section{max-width:1040px;padding:var(--section-y) var(--gutter);margin:0 auto}.at-faq{border-top:1px solid var(--border-hairline);background:var(--surface-card)}.at-faq__inner{max-width:760px;padding:var(--section-y) var(--gutter);margin:0 auto}.at-faq__list{max-width:760px}.at-faq__item{border-top:1px solid var(--border-hairline)}.at-faq__item:last-child{border-bottom:1px solid var(--border-hairline)}.at-faq__q{cursor:pointer;justify-content:space-between;align-items:center;gap:var(--space-4);padding:var(--space-5) 0;font-family:var(--font-display);font-weight:600;font-size:var(--text-body-lg);color:var(--text-heading);list-style:none;display:flex}.at-faq__q::-webkit-details-marker{display:none}.at-faq__sign{flex:none;width:14px;height:14px;position:relative}.at-faq__sign:before,.at-faq__sign:after{content:"";background:var(--brand-primary);transition:transform var(--duration-fast) var(--ease-standard);position:absolute}.at-faq__sign:before{width:14px;height:2px;top:6px;left:0}.at-faq__sign:after{width:2px;height:14px;top:0;left:6px}.at-faq__item[open] .at-faq__sign:after{transform:scaleY(0)}.at-faq__a{margin:0 0 var(--space-5);max-width:68ch;font-size:var(--text-body);color:var(--text-muted);line-height:1.65}.lang-zh .at-faq__a{max-width:40em}.at-cta{text-align:center;padding-bottom:var(--section-y)}@media (prefers-reduced-motion:reduce){.at-faq__sign:before,.at-faq__sign:after{transition:none}}