/* About and contact pages (/about/, /contact/). Same tokens as AAHUB and the observatory page.
   v2: medium widths (701-1180 px) - QQ card and card grids no longer squeeze their text. */
:root{--ink:#1d1d1f;--muted:#6e6e73;--paper:#f5f5f7;--blue:#0071e3;--link:#0066cc;--line:#dedee3;--night:#1b2537;color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:#fff;font-synthesis:none}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;min-width:320px;background:#fff;font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
h1,h2,h3,p,figure,dl,dd,ul{margin:0}
h1,h2,h3{font-weight:650;line-height:1.18;letter-spacing:-.04em;text-wrap:balance}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
svg{width:18px;height:18px;display:block;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
sup{font-size:.55em;vertical-align:super;line-height:0}
a{-webkit-tap-highlight-color:transparent}
a:focus-visible{outline:3px solid #2997ff;outline-offset:5px;border-radius:4px}
.container{width:min(1160px,calc(100% - 96px));margin-inline:auto}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap}
.skip-link{position:fixed;top:-80px;left:16px;z-index:100;padding:12px 20px;border-radius:10px;background:#fff;box-shadow:0 4px 24px #0002}
.skip-link:focus{top:12px}
.aa-site-header .aa-site-links a[aria-current="page"]{color:#1d1d1f}
.mobile-break{display:none}

/* Night hero: the login/download photograph, cropped towards the horizon. */
.page-hero{position:relative;isolation:isolate;overflow:hidden;background:var(--night);color:#fff;text-align:center;padding-block:clamp(96px,12vw,150px) clamp(150px,18vw,230px)}
.page-hero::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(180deg,rgba(16,24,39,.42) 0%,rgba(16,24,39,.16) 48%,rgba(16,24,39,0) 72%,rgba(16,24,39,.24) 100%),url('/aahub/assets/login-night-1-1.jpg') center 78%/cover no-repeat}
.page-hero .eyebrow{color:#d9e1ec}
.page-hero h1{font-size:clamp(44px,6.4vw,82px);line-height:1.14;letter-spacing:-.045em;text-shadow:0 2px 24px rgba(8,14,26,.18)}
.compact-punctuation{display:inline-block;width:.5em}
.hero-description{margin-top:24px;font-size:21px;line-height:1.75;color:#e6ebf2}
.contact-page .page-hero{padding-block:clamp(88px,10vw,128px) clamp(120px,14vw,184px)}

/* Shared section rhythm. */
.section-space{padding-block:120px}
.paper{background:var(--paper)}
.eyebrow{margin-bottom:20px;font-size:17px;font-weight:600;letter-spacing:.035em}
.muted{color:var(--muted)}
h2{font-size:clamp(36px,4.6vw,58px)}
h3{font-size:26px;letter-spacing:-.02em}
.section-heading{margin-bottom:56px}
.section-description{margin-top:26px;font-size:20px;line-height:1.8;color:var(--muted)}
.card-label{font-size:13px;font-weight:600;letter-spacing:.08em;color:#86868b}
.actions{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:28px;margin-top:32px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:10px 23px;border-radius:100px;background:var(--blue);color:#fff;font-size:16px;line-height:1.4;transition:background .2s,transform .2s}
.button:hover{background:#0077ed;transform:translateY(-1px)}
.button svg{width:16px;height:16px}
.text-link{display:inline-flex;align-items:center;gap:6px;min-height:38px;color:var(--link);font-size:16px;line-height:1.5}
.text-link:hover{text-decoration:underline;text-underline-offset:4px}
.text-link svg{width:16px;height:16px;transition:transform .2s}
.text-link:hover svg{transform:translateX(3px)}

/* About: introduction and facts. */
.about-intro{display:grid;grid-template-columns:1fr 1fr;gap:48px 90px;align-items:center}
.about-intro h2{font-size:clamp(34px,4vw,50px)}
.lead{font-size:20px;line-height:1.95;color:var(--muted)}
.facts{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,1fr);margin-top:12px;padding-top:36px;border-top:1px solid var(--line)}
.facts>div{padding-left:30px;border-left:1px solid var(--line)}
.facts>div:first-child{padding-left:0;border-left:0}
.facts dt{font-size:34px;font-weight:600;line-height:1.2;letter-spacing:-.03em}
.facts dd{margin-top:10px;font-size:15px;color:var(--muted)}

/* About: business lines and entry points. */
.business-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{display:flex;flex-direction:column;gap:16px;padding:44px 44px 38px;border-radius:28px;background:#fff}
.card p{font-size:17px;line-height:1.85;color:var(--muted)}
.card .text-link{margin-top:auto;padding-top:6px}
.service-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.service-card{display:flex;flex-direction:column;gap:12px;min-height:250px;padding:34px 32px 28px;border-radius:24px;background:var(--paper);transition:transform .2s,box-shadow .2s}
.service-card:hover{transform:translateY(-3px);box-shadow:0 14px 40px rgba(0,0,0,.07)}
.service-card h3{font-size:24px}
.service-card p{font-size:16px;line-height:1.8;color:var(--muted)}
.service-more{display:inline-flex;align-items:center;gap:6px;margin-top:auto;color:var(--link);font-size:15px}
.service-more svg{width:16px;height:16px;transition:transform .2s}
.service-card:hover .service-more svg{transform:translateX(3px)}
.closing{text-align:center}

/* Contact: channels and the AACORE checklist. */
.channels{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:24px}
.channel-stack{display:grid;gap:24px}
.channel{display:flex;flex-direction:column;gap:14px;padding:40px;border-radius:28px;background:var(--paper)}
.channel p{font-size:16px;line-height:1.8;color:var(--muted)}
.channel .text-link{margin-top:auto}
.qq-body{flex:1;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;margin-top:6px}
.qq-copy{display:flex;flex-direction:column;align-items:flex-start;gap:18px}
.group-number{font-size:15px;color:var(--muted)}
.group-number strong{font-size:22px;font-weight:600;letter-spacing:.02em;color:var(--ink)}
.qr{width:224px;padding:10px;border-radius:24px;background:#fff}
.qr img{width:100%;border-radius:14px}
.qr figcaption{margin-top:8px;font-size:12px;text-align:center;color:var(--muted)}
.email-address{font-size:26px;font-weight:600;letter-spacing:-.01em;overflow-wrap:anywhere}
.email-address:hover{color:var(--link)}
.checklist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px;padding:0;list-style:none;border-top:1px solid var(--line)}
.checklist li{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line);font-size:17px;line-height:1.7}
.checklist li::before{content:"";flex:0 0 7px;height:7px;margin-top:.72em;border-radius:50%;background:var(--blue)}
.checklist-note{margin-top:26px;font-size:14px;color:var(--muted)}

/* Footer: same markup and look as AAHUB and the observatory page. */
.site-footer{padding-block:50px 34px}
.footer-top{display:flex;align-items:center;gap:36px;padding-bottom:30px;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}
.footer-top .brand{position:relative;display:inline-block;padding-right:10px;font-size:25px;font-weight:750;line-height:1.25;letter-spacing:-1.1px;color:var(--ink)}
.footer-top .brand sup{position:absolute;top:5px;right:0;font-size:9px;font-weight:600;line-height:1;letter-spacing:0}
.back-top{display:flex;align-items:center;gap:9px;margin-left:auto}
.back-top svg{width:16px;height:16px;stroke-width:1.5}
.footer-legal{display:flex;align-items:center;flex-wrap:wrap;gap:10px 26px;padding-top:24px;font-size:12px;color:var(--muted)}
.footer-legal a:hover,.footer-top>a:not(.brand):hover{text-decoration:underline;text-underline-offset:4px}

/* Medium widths: stack before text columns get narrower than about 200 px. */
@media(max-width:1180px){
 .channels{grid-template-columns:1fr}
 .channel-stack{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:960px){
 .service-grid{grid-template-columns:1fr}
 .service-card{min-height:0}
}
@media(max-width:860px){
 .business-grid{grid-template-columns:1fr}
 .facts dt{font-size:28px}
 .email-address,.channel h3{font-size:22px}
}
@media(max-width:700px){
 .container{width:calc(100% - 40px)}
 .mobile-break{display:inline}
 .page-hero{padding-block:84px 132px}
 .contact-page .page-hero{padding-block:72px 108px}
 .page-hero h1{font-size:44px}
 .hero-description{font-size:17px}
 .section-space{padding-block:80px}
 .eyebrow{margin-bottom:16px;font-size:14px}
 h2{font-size:34px}
 h3{font-size:22px}
 .section-heading{margin-bottom:36px}
 .section-description{margin-top:20px;font-size:17px}
 .about-intro{grid-template-columns:1fr;gap:26px}
 .lead{font-size:17px;line-height:1.9}
 .facts{grid-template-columns:1fr;gap:22px;padding-top:28px}
 .facts>div{padding-left:0;border-left:0}
 .facts dt{font-size:28px}
 .business-grid,.service-grid,.channels,.channel-stack{grid-template-columns:1fr;gap:16px}
 .card,.channel{padding:30px 26px;border-radius:22px}
 .card p{font-size:16px}
 .service-card{min-height:0;padding:28px 26px 24px}
 .qq-body{grid-template-columns:1fr;gap:24px}
 .qr{width:min(224px,100%)}
 .email-address{font-size:22px}
 .checklist{grid-template-columns:1fr}
 .checklist li{font-size:16px}
 .site-footer{padding-top:34px}
 .footer-top{flex-wrap:wrap;gap:22px;padding-bottom:25px;font-size:13px}
 .footer-top>a:nth-child(2){order:3;width:100%;margin-top:-8px}
 .footer-legal{display:block;padding-top:20px}
 .footer-legal p{margin-bottom:9px}
}
@media(prefers-reduced-motion:reduce){
 html{scroll-behavior:auto}
 .button,.service-card,.text-link svg,.service-more svg{transition:none}
 .button:hover,.service-card:hover{transform:none}
}