/* 按 Xcode 网页 390 / 1280 CSS px 实测，使用 Free Voice 真实内容和站点下载色。 */
body.app-page{background:#f5f5f7;color:rgba(0,0,0,.88);font-family:-apple-system,system-ui,"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:13px;line-height:16px;--muted:rgba(0,0,0,.56);--line:rgba(0,0,0,.12);color-scheme:light}
.app-page h1,.app-page h2,.app-page h3,.app-page p{margin:0}
.page-width{width:100%;max-width:1020px;padding-inline:40px;margin-inline:auto}
.svg-defs{position:absolute;width:0;height:0;overflow:hidden}
.glyph{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex:none}
.skip-link{position:absolute;left:25px;top:-80px;z-index:5;padding:12px;background:#fff}.skip-link:focus{top:5px}
.app-page .site-header{display:block;padding:0;background:#fff;height:44px}
.header-inner{height:44px;display:flex;justify-content:space-between;align-items:center}
.app-page .brand{font-size:17px;font-weight:600;letter-spacing:-.3px}
.app-page .nav{gap:20px;font-size:11px}
.app-hero{height:286px;position:relative;overflow:hidden;isolation:isolate;background:var(--band);border-radius:0 0 2px 2px}
.app-hero:before{content:"";position:absolute;inset:-60px;z-index:-1;background:linear-gradient(180deg,rgba(0,0,0,0) 20%,rgba(0,0,0,.65)),var(--app-icon) center 45%/cover;filter:blur(55px)}
.hero-inner{height:100%;display:flex;align-items:center;gap:26px;color:rgba(255,255,255,.92)}
.app-icon{width:194px;height:194px;object-fit:contain;flex:none}
.hero-copy{min-width:0}
.hero-copy h1{font-size:34px;line-height:40px;font-weight:700;margin-bottom:4px!important;color:#fff}
.hero-copy .subtitle{font-size:17px;line-height:22px;font-weight:700;margin-bottom:8px;color:rgba(255,255,255,.78)}
.availability,.price{font-size:13px;line-height:16px;color:rgba(255,255,255,.8)}
.download-button{display:inline-flex;align-items:center;justify-content:center;margin-top:10px;min-height:32px;padding:0 16px;border-radius:999px;background:var(--action);color:#fff;font-size:13px;line-height:16px;font-weight:600;white-space:nowrap}
.download-button:hover{background:var(--action-hover);text-decoration:none}
.app-facts{display:flex;position:relative;overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x mandatory;scrollbar-width:none;margin:0;padding:26px 0 29px;gap:0}
.app-facts::-webkit-scrollbar,.preview-strip::-webkit-scrollbar{display:none}
.app-facts>div{flex:0 0 calc(100%/6);min-width:0;text-align:center;position:relative;scroll-snap-align:start}
.app-facts>div+div:before{content:"";position:absolute;left:0;top:8px;height:50px;width:1px;background:var(--line)}
.app-facts dt{font-size:11px;line-height:14px;font-weight:600;color:var(--muted);margin-bottom:8px}
.app-facts dd{margin:0;color:#48484a}
.fact-value{display:block;font-size:22px;line-height:26px;font-weight:700;white-space:nowrap;height:26px;margin-bottom:6px}
.fact-value .glyph{height:25px;width:25px;vertical-align:top}
.fact-note{display:block;font-size:11px;line-height:16px;white-space:nowrap}
.gallery-frame{position:relative}
.preview-strip{display:flex;position:relative;align-items:flex-start;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;overscroll-behavior-x:contain;scrollbar-width:none}
.preview-strip>img{display:block;flex:0 0 calc((100% - 20px)/2);width:calc((100% - 20px)/2);height:auto;max-width:none;object-fit:contain;scroll-snap-align:start;border-radius:4px;border:1px solid rgba(0,0,0,.1)}
.gallery-controls{position:absolute;inset:0;pointer-events:none;display:flex;align-items:center;justify-content:space-between;opacity:0;transition:opacity .15s}
.gallery-frame:hover .gallery-controls,.gallery-frame:focus-within .gallery-controls{opacity:1}
.gallery-controls button{pointer-events:auto;width:32px;height:48px;border:0;background:rgba(235,235,240,.94);font-size:30px;color:#555;border-radius:6px}
.gallery-controls button:disabled{visibility:hidden}
.app-facts:focus-visible,.preview-strip:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.platform-label{display:flex;align-items:center;gap:10px;color:var(--muted);padding:16px 0 12px;border-bottom:1px solid var(--line);font-size:13px;line-height:18px}
.platform-label .glyph{width:24px;height:18px}
.description-section{padding:24px 0 32px}
.description-copy{max-width:66%}
.expandable{position:relative;font-size:13px;line-height:18px}
.copy-body p+p{margin-top:18px}
.copy-preview{max-height:90px;overflow:hidden;white-space:pre-line}
.more-button{border:0;color:var(--blue);font-size:13px;line-height:18px;background:transparent;padding:0;cursor:pointer}
.is-collapsed .more-button{position:absolute;right:0;bottom:0;padding-left:20px;background:linear-gradient(90deg,transparent,var(--canvas) 30%)}
.is-expanded .more-button{display:block;margin:8px 0 0 auto}
.shelf{padding:13px 0 32px}
.shelf h2{font-size:17px;line-height:22px;font-weight:700;margin-bottom:13px!important}
.title-link{color:inherit;display:inline-flex;align-items:center;gap:6px}.title-link:hover{text-decoration:none}
.chevron{color:rgba(0,0,0,.28);font-size:26px;font-weight:400;line-height:20px}
.title-toggle{font:inherit;display:flex;align-items:center;gap:6px;padding:0;border:0;background:none;color:inherit;text-align:left}
.updates,.privacy-section{padding-top:29px}
.update-layout{display:flex;align-items:flex-start;gap:16px;justify-content:space-between}
.update-copy{max-width:80%;flex:1}
.version-date{font-size:13px;line-height:18px;text-align:right;color:var(--muted);flex:none}
.version-date span,.version-date time{display:block}
.version-date #release-label{display:inline}
.privacy-intro{font-size:13px;line-height:18px;max-width:66%}
.privacy-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:16px}
.privacy-card{border-radius:10px;background:rgba(0,0,0,.05);padding:30px;display:flex;align-items:center;flex-direction:column;gap:8px;text-align:center}
.privacy-icon.glyph{color:#007aff;width:28px;height:28px;margin-bottom:7px}
.privacy-card h3{font-size:15px;line-height:20px;font-weight:600}
.privacy-card>p{font-size:13px;line-height:18px;color:var(--muted)}
.privacy-card ul{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:14px 12px;width:100%;margin:8px 0 0;padding:0;text-align:left;font-size:13px;line-height:18px}
.privacy-card li{display:flex;align-items:center;gap:8px}.privacy-card li .glyph{width:18px;height:18px}
.privacy-footnote{font-size:13px;line-height:18px;margin-top:13px!important;color:var(--muted)}
.information-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px 20px;margin:0}
.information-grid dt{font-size:13px;line-height:16px;color:var(--muted);margin-bottom:4px}
.information-grid dd{font-size:13px;line-height:16px;margin:0}
.product-links{display:flex;align-items:center;justify-content:center;gap:20px;padding:13px 0 32px;font-size:13px;line-height:16px}
.related-list{list-style:none;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px 20px;margin:0;padding:0}
.related-list li{display:flex;align-items:center;gap:16px;min-height:64px;min-width:0}
.related-list img{width:64px;height:64px;object-fit:contain;border-radius:14px;flex:none}
.related-list li>div{min-width:0;flex:1}
.related-list h3{font-size:15px;line-height:20px;font-weight:600}
.related-list p{font-size:11px;line-height:16px;color:var(--muted)}
.view-button{display:inline-flex;align-items:center;justify-content:center;flex:none;min-width:56px;height:30px;border-radius:999px;background:#e7eff9;color:var(--blue);font-size:13px;font-weight:600}.view-button:hover{background:#dae8f8;text-decoration:none}
.app-page .site-footer{font-size:11px;line-height:16px;border:0;padding-top:24px;padding-bottom:32px;color:var(--muted)}
@media(max-width:760px){
 .page-width{padding-inline:25px}
 .app-hero{height:200px}.hero-inner{gap:13px}.app-icon{width:128px;height:128px}
 .hero-copy{flex:1}.hero-copy h1{font-size:17px;line-height:22px}
 .hero-copy .subtitle{font-size:13px;line-height:16px;font-weight:400;margin-bottom:4px}
 .download-button{margin-top:10px;min-height:27px}
 .app-facts{margin-inline:-25px;padding-inline:25px;gap:10px;scroll-padding-left:25px}
 .app-facts>div{flex-basis:144px}.app-facts>div+div:before{left:-5px}
 .preview-strip{margin-inline:-25px;padding-inline:25px;gap:10px;scroll-padding-left:25px}
 .preview-strip>img{flex-basis:calc(100vw - 92px);width:calc(100vw - 92px)}
 .gallery-controls{display:none}
 .description-copy,.privacy-intro{max-width:none}
 .update-copy{max-width:none;min-width:0}.update-layout{gap:10px}
 .privacy-grid{grid-template-columns:1fr;gap:24px}
 .privacy-card ul{grid-template-columns:1fr 1fr;column-gap:12px}.privacy-card li{align-items:flex-start}
 .information-grid{grid-template-columns:1fr;gap:24px}
 .product-links{display:block;margin-inline:-25px;padding:13px 0 32px}
 .product-links a{display:block;border-top:1px solid var(--line);padding:10px 25px;font-size:18px;line-height:22.1538px}
 .product-links a:last-child{border-bottom:1px solid var(--line)}
 .related-list{grid-template-columns:1fr;max-width:calc(100vw - 92px)}
 .app-page .site-footer .footer-links{gap:8px 14px}
}
@media(prefers-reduced-motion:reduce){.gallery-controls{transition:none}}
/* iPhone 网页实测：390 下 144px 竖图，10px 间距；宽屏四图。 */
.preview-strip.portrait>img{flex-basis:calc((100% - 60px)/4);width:calc((100% - 60px)/4)}
.platform-label button{border:0;background:transparent;color:var(--muted);font:inherit;padding:0;cursor:pointer}
.platform-label button[aria-selected="true"]{color:var(--blue);font-weight:600}
.platform-label button:focus-visible{outline:2px solid var(--blue);outline-offset:4px}
.download-methods dd{display:flex;flex-direction:column;align-items:flex-start;gap:8px}
.channel-note{font-size:13px;line-height:18px;color:var(--muted);margin-top:13px!important}
.hero-copy #release-status:not(.sr-only){font-size:11px;line-height:16px;color:inherit;margin-top:6px}
.hero-copy #wechat{font-size:11px;line-height:14px;background:transparent;padding:4px 0;color:inherit}
.app-page #retry{border:0;cursor:pointer}
@media(max-width:760px){.preview-strip.portrait>img{flex-basis:calc((100vw - 102px)/2);width:calc((100vw - 102px)/2)}}

/* 可选双平台主下载：不改变单入口页面。 */
.hero-downloads{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.hero-downloads .download-button{margin-top:0}
@media(max-width:760px){.hero-downloads{flex-direction:column;align-items:flex-start}}