:root{--ink:#183541;--muted:#52646b;--paper:#fcfbf7;--line:#d7e0dc;--sky:#e8f2f1;--sea:#d7ebeb;--accent:#c9eaa5;--white:#fff;--serif:Georgia,'Times New Roman',serif;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:var(--paper)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;font-size:16px;line-height:1.6}a{color:inherit;text-decoration:none}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #4d8291;outline-offset:4px}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.14}h1,h2{font-family:var(--serif);font-weight:400;letter-spacing:-.035em}h1{font-size:clamp(3rem,6.4vw,6.7rem)}h2{font-size:clamp(2rem,3.2vw,3.4rem)}h3{font-size:1.38rem;letter-spacing:-.018em}p{color:var(--muted)}.shell{width:min(100% - 64px,1240px);margin-inline:auto}.skip-link{position:absolute;top:-80px;left:16px;background:var(--white);padding:8px;z-index:100}.skip-link:focus{top:12px}.site-header{border-bottom:1px solid var(--line);background:var(--paper);position:relative;z-index:10}.header-inner{min-height:94px;display:flex;align-items:center;gap:48px;justify-content:space-between}.brand{display:inline-flex;align-items:center;gap:11px;line-height:1;flex-shrink:0}.brand-mark{height:41px;width:41px;background:var(--ink);color:#fff;border-radius:11px;display:grid;place-items:center;font:28px var(--serif);padding-bottom:5px}.brand strong{display:block;font-size:25px;letter-spacing:-.065em}.brand small{display:block;font-size:10px;letter-spacing:.24em;margin-top:5px;font-weight:700}.nav{display:flex;gap:clamp(12px,2.1vw,32px);align-items:center}.nav a{font-size:14px;font-weight:600;white-space:nowrap;transition:color .2s}.nav a:hover,.nav a[aria-current=page]{color:#347685}.nav a[aria-current=page]{text-decoration:underline;text-underline-offset:8px}.menu-toggle{display:none}.hero{min-height:680px;display:grid;grid-template-columns:1.22fr .78fr;gap:7%;align-items:center;padding-block:78px 94px}.hero-copy h1{max-width:820px;margin:24px 0 25px}.hero-copy h1 em{font-style:normal;color:#40838b}.hero-copy>p{max-width:590px;font-size:20px;line-height:1.55}.pill,.eyebrow{font-size:12px;font-weight:800;letter-spacing:.17em}.pill{display:inline-block;border:1px solid #afc8c9;border-radius:30px;padding:9px 14px}.eyebrow{color:#41838b}.actions{display:flex;gap:12px;margin-top:34px;flex-wrap:wrap}.button{display:inline-flex;gap:22px;align-items:center;justify-content:center;border-radius:5px;background:var(--ink);color:#fff;font-size:15px;font-weight:700;padding:15px 20px;min-height:52px;transition:transform .2s,background .2s}.button:hover{background:#2f6975;transform:translateY(-2px)}.button.subtle{color:var(--ink);background:transparent;border:1px solid #9fb9ba}.button.subtle:hover{background:var(--sky)}.button.small{min-height:44px;padding:10px 15px;font-size:14px}.hero-feature{min-height:480px;background:var(--sea);border:1px solid #bdd9d8;border-radius:8px;display:flex;flex-direction:column;justify-content:space-between;padding:28px;overflow:hidden}.feature-top,.feature-bottom{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;font-size:11px;font-weight:800;letter-spacing:.12em}.feature-symbol{font:clamp(10rem,19vw,18rem)/.8 var(--serif);color:var(--ink);letter-spacing:-.14em;text-align:center;position:relative;transform:translateX(-20px)}.feature-symbol span{font:clamp(4rem,9vw,8rem) Arial,sans-serif;position:absolute;top:3%;right:7%;font-weight:300;letter-spacing:0}.feature-bottom{align-items:end}.feature-bottom p{font:clamp(1.9rem,3vw,3rem)/1.08 var(--serif);letter-spacing:-.035em;color:var(--ink);margin:0}.feature-bottom span{max-width:115px;text-align:right}.section{padding-block:92px}.section.compact{padding-top:24px}.section-last{padding-bottom:120px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:34px}.section-heading h2{max-width:630px;margin:12px 0 0}.section-heading>p{max-width:335px;margin:0}.cards{display:grid;gap:16px}.cards.three{grid-template-columns:repeat(3,minmax(0,1fr))}.card{min-height:290px;border:1px solid var(--line);background:var(--white);border-radius:6px;padding:27px;display:flex;flex-direction:column}.card.featured{background:var(--sky)}.card h3{margin:29px 0 11px}.card p{margin-bottom:26px}.text-link{display:inline-flex;gap:5px;align-items:center;color:#236977;font-weight:700;font-size:15px;text-decoration:underline;text-decoration-color:#a9c7c8;text-underline-offset:5px}.text-link:hover{color:#123b46;text-decoration-color:currentColor}.card .text-link{margin-top:auto}.band{background:var(--ink);color:#fff;padding-block:88px}.band .eyebrow{color:var(--accent)}.band h2{max-width:620px;margin:14px 0 0}.band p{color:#d9e8e7;font-size:18px;max-width:500px}.band .text-link{color:var(--accent);text-decoration-color:#8db692}.split{display:grid;grid-template-columns:1fr .78fr;gap:11%;align-items:center}.audience{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line)}.audience>div{padding:28px 28px 0 0}.audience>div+div{border-left:1px solid var(--line);padding-left:28px}.audience .number{font:28px var(--serif);color:#477d84}.audience h3{margin:25px 0 10px}.audience p{max-width:340px}.page-intro{padding-block:84px 78px;max-width:1240px}.page-intro h1{max-width:870px;margin:18px 0 20px}.page-intro>p{max-width:680px;font-size:20px}.back-link{display:block;margin-bottom:42px;color:#397887;font-size:14px;font-weight:700}.product-list{border-top:1px solid var(--line);margin-bottom:100px}.product-row{display:grid;grid-template-columns:25% 1fr;gap:30px;padding:52px 0;border-bottom:1px solid var(--line)}.product-id{font:25px var(--serif)}.product-id span{display:block;margin-top:9px;font:700 12px Arial,sans-serif;letter-spacing:.12em;color:#5a7e82}.product-row h2{margin:14px 0}.product-row p{max-width:680px}.status{display:inline-block;background:#d5eadd;padding:5px 10px;border-radius:3px;font-size:12px;font-weight:700}.status.quiet{background:var(--sky)}.two-col{display:grid;grid-template-columns:.75fr 1fr;gap:10%;padding-bottom:64px}.two-col h2{margin:12px 0}.body-copy p{font-size:18px}.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);margin-bottom:80px}.feature-grid article{padding:26px 20px 0 0}.feature-grid article+article{border-left:1px solid var(--line);padding-left:20px}.feature-grid span{font:24px var(--serif);color:#49868b}.feature-grid h3{margin:24px 0 9px}.notice{border-left:4px solid #75acae;background:var(--sky);padding:26px 30px;max-width:880px}.notice p{margin:0 0 14px}.notice p:last-child{margin-bottom:0}.notice h2{font-size:2rem;margin-bottom:15px}.articles{padding-bottom:110px}.article-block{display:grid;grid-template-columns:25% 1fr;gap:30px;border-top:1px solid var(--line);padding:48px 0;scroll-margin-top:20px}.article-index{font-size:12px;letter-spacing:.15em;font-weight:800;color:#4e8588}.article-block h2{margin-bottom:22px}.article-block p{max-width:740px;font-size:18px}.process{border-top:1px solid var(--line);margin-bottom:60px}.process article{display:grid;grid-template-columns:15% 1fr;gap:30px;padding:36px 0;border-bottom:1px solid var(--line)}.process article>span{font:32px var(--serif);color:#528d91}.process h2{font-size:2.1rem;margin:0 0 12px}.process p{max-width:620px;margin:0}.support-layout{display:grid;grid-template-columns:.65fr 1fr;gap:12%;padding-bottom:100px}.support-layout h2{margin:12px 0}.support-layout>div:first-child p{max-width:350px}.faq h2{font-size:2.2rem;margin:0 0 23px}.faq details{border-top:1px solid var(--line);padding:19px 0}.faq details:last-child{border-bottom:1px solid var(--line)}.faq summary{font-weight:700;cursor:pointer;font-size:17px;list-style:none;display:flex;justify-content:space-between;gap:20px}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:'+';font:24px Arial,sans-serif}.faq details[open] summary:after{content:'−'}.faq details p{margin:14px 35px 0 0}.footer{background:#102b36;color:#fff;padding-top:70px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.2fr;gap:45px}.footer .brand-mark{background:var(--accent);color:var(--ink)}.footer .brand{margin-bottom:16px}.footer p{color:#b8ced0;max-width:300px;font-size:14px}.footer-grid>div:not(:first-child){display:flex;flex-direction:column;gap:13px}.footer-grid strong{font-size:13px;margin-bottom:6px}.footer-grid a:not(.brand){font-size:14px;color:#d6e6e6}.footer-grid a:hover{text-decoration:underline}.footer-grid .footer-note{margin:0;max-width:210px}.footer-bottom{border-top:1px solid #3a5862;margin-top:65px;padding:20px 0 25px;display:flex;justify-content:space-between;gap:20px;color:#b8ced0;font-size:12px}
@media(max-width:1000px){.header-inner{gap:18px}.nav{gap:14px}.nav a{font-size:12px}.hero{gap:3%}.hero-feature{min-height:410px}.cards.three{grid-template-columns:repeat(2,1fr)}.feature-grid{grid-template-columns:repeat(2,1fr)}.feature-grid article:nth-child(3){border-left:0;padding-left:0}.feature-grid article:nth-child(n+3){border-top:1px solid var(--line)}}
@media(max-width:720px){.shell{width:min(100% - 36px,1240px)}.header-inner{min-height:72px}.brand-mark{height:37px;width:37px}.brand strong{font-size:23px}.menu-toggle{display:block;border:1px solid var(--line);background:transparent;border-radius:4px;font-size:22px;width:44px;height:44px;cursor:pointer}.nav{display:none;position:absolute;top:72px;left:0;right:0;background:var(--paper);padding:12px 18px 22px;border-bottom:1px solid var(--line);box-shadow:0 12px 20px #152e3518;flex-direction:column;align-items:stretch}.nav.is-open{display:flex}.nav a{font-size:16px;padding:9px 4px}.hero{display:block;padding-block:58px}.hero-copy h1{font-size:clamp(3.2rem,12vw,5rem)}.hero-copy>p,.page-intro>p{font-size:17px}.hero-feature{min-height:330px;margin-top:52px}.feature-symbol{font-size:12rem}.feature-symbol span{font-size:5rem}.section{padding-block:65px}.section.compact{padding-top:10px}.section-heading{display:block}.section-heading>p{margin-top:15px}.cards.three{grid-template-columns:1fr}.card{min-height:235px}.card h3{margin-top:20px}.split,.two-col,.support-layout{grid-template-columns:1fr;gap:22px}.band{padding-block:66px}.audience{grid-template-columns:1fr}.audience>div,.audience>div+div{border-left:0;border-bottom:1px solid var(--line);padding:25px 0}.audience h3{margin-top:10px}.page-intro{padding-block:58px 45px}.page-intro h1{font-size:clamp(3.2rem,12vw,5rem)}.product-row,.article-block{grid-template-columns:1fr;gap:18px;padding:32px 0}.product-list{margin-bottom:55px}.two-col{padding-bottom:45px}.feature-grid{margin-bottom:40px}.articles,.support-layout{padding-bottom:70px}.footer-grid{grid-template-columns:1fr 1fr;gap:32px}.footer-grid>div:first-child{grid-column:1/-1}.footer-bottom{margin-top:45px;display:block}.footer-bottom span{display:block;margin:7px 0}}
@media(max-width:430px){.feature-grid{grid-template-columns:1fr}.feature-grid article,.feature-grid article+article,.feature-grid article:nth-child(3){border-left:0;border-top:1px solid var(--line);padding:18px 0}.feature-grid article:first-child{border-top:0}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.process article{grid-template-columns:55px 1fr;gap:12px}.process h2{font-size:1.7rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button{transition:none}}
/* Language navigation */
.header-inner>.brand{order:0}.header-inner>.nav{order:1}.header-inner>.language-switch{order:2}.header-inner>.menu-toggle{order:3}
.language-switch{display:flex;align-items:center;gap:2px;padding:3px;border:1px solid var(--line);border-radius:5px;flex-shrink:0}
.language-switch a{display:grid;place-items:center;min-width:34px;min-height:32px;font-size:12px;font-weight:800;letter-spacing:.03em;border-radius:3px;color:var(--muted)}
.language-switch a:hover,.language-switch a[aria-current=page]{background:var(--ink);color:#fff}
@media(max-width:1100px){.header-inner{gap:14px}.menu-toggle{display:block;border:1px solid var(--line);background:transparent;border-radius:4px;font-size:22px;width:44px;height:44px;cursor:pointer}.nav{display:none;position:absolute;top:94px;left:0;right:0;background:var(--paper);padding:12px max(18px,calc((100% - 1176px)/2)) 22px;border-bottom:1px solid var(--line);box-shadow:0 12px 20px #152e3518;flex-direction:column;align-items:stretch}.nav.is-open{display:flex}.nav a{font-size:16px;padding:9px 4px}}
@media(max-width:720px){.header-inner{gap:8px}.language-switch a{min-width:27px;min-height:30px;font-size:11px}.menu-toggle{flex-shrink:0}.nav{top:72px;padding:12px 18px 22px}}
/* Five-language control: keep every language visible on narrow screens. */
@media(max-width:720px){.header-inner{flex-wrap:wrap;padding-block:12px;row-gap:8px}.header-inner>.menu-toggle{margin-left:auto}.header-inner>.language-switch{flex-basis:100%;justify-content:center}.language-switch a{min-width:40px;min-height:32px;font-size:12px}.nav{top:100%}}
/* Galina's illustration identifies the expert while the Gamma mark remains the site brand. */
.expert-story{display:flex;align-items:center;gap:24px;min-width:0}
.expert-story>div{min-width:0}
.expert-avatar{display:block;flex:none;width:136px;height:136px;object-fit:cover;border-radius:50%;border:5px solid #f4f6f2;background:#fff}
.profile-intro{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,380px);align-items:center;gap:clamp(24px,5vw,80px)}
.profile-intro h1{font-size:clamp(3rem,5.8vw,6.1rem)}
.profile-intro p{max-width:680px;font-size:20px}
.profile-portrait{display:block;width:100%;height:auto;aspect-ratio:1;object-fit:cover;border:1px solid var(--line);border-radius:14px;background:#fff}
@media(max-width:850px){.expert-story{align-items:flex-start}.expert-avatar{width:104px;height:104px}.profile-intro{grid-template-columns:minmax(0,1fr) minmax(200px,32%)}}
@media(max-width:720px){.expert-story{align-items:center}.profile-intro{grid-template-columns:1fr}.profile-portrait{width:min(100%,360px)}.profile-intro p{font-size:17px}}
@media(max-width:430px){.expert-story{display:block}.expert-avatar{margin-bottom:22px;width:112px;height:112px}}
/* Gamma AAC product gallery and user guide */
.aac-intro{display:grid;grid-template-columns:minmax(0,1fr) minmax(230px,320px);gap:clamp(28px,6vw,88px);align-items:center}
.aac-intro h1{font-size:clamp(3rem,5.4vw,5.8rem);max-width:850px}
.aac-intro p{max-width:760px}
.aac-version{background:var(--sky);border:1px solid var(--line);border-radius:8px;padding:28px;align-self:center}
.aac-version strong{font-family:var(--serif);font-size:2.2rem;font-weight:400}
.aac-version p{font-size:1rem;margin:15px 0 0}
.aac-features{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line)}
.aac-features article{padding:26px 24px 8px 0}
.aac-features article+article{border-left:1px solid var(--line);padding-left:24px}
.aac-features .number{font:1.65rem var(--serif);color:#477d84}
.aac-features h3{margin:24px 0 12px}
.aac-gallery-section{padding-top:48px}
.aac-gallery-note{max-width:800px;margin:-10px 0 28px;font-size:1rem}
.aac-gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.aac-shot{min-width:0;margin:0;padding:18px;background:var(--white);border:1px solid var(--line);border-radius:8px;display:flex;flex-direction:column;justify-content:center}
.aac-shot img{display:block;width:100%;height:350px;object-fit:contain;background:#fff;border-radius:4px}
.aac-shot figcaption{font-size:.95rem;font-weight:700;margin:13px 4px 1px}
.aac-guide-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:clamp(34px,7vw,100px);align-items:start;padding-bottom:110px}
.aac-guide-toc{position:sticky;top:24px;display:flex;flex-direction:column;gap:7px;border-top:1px solid var(--line);padding-top:20px}
.aac-guide-toc strong{font-size:.85rem;margin-bottom:8px}
.aac-guide-toc a{font-size:.9rem;line-height:1.35;padding:8px 0;color:#236977}
.aac-guide-toc a:hover{text-decoration:underline}
.aac-guide-step{display:grid;grid-template-columns:60px minmax(0,1fr);gap:24px;border-top:1px solid var(--line);padding:30px 0;scroll-margin-top:20px}
.aac-guide-step h2{font-size:clamp(1.8rem,3vw,2.6rem);margin-bottom:18px}
.aac-guide-step p{font-size:1.07rem;max-width:740px}
.aac-step-number{font:1.7rem var(--serif);color:#477d84}
.aac-guide-content .notice{margin-top:20px}
@media(max-width:1000px){.aac-features{grid-template-columns:repeat(2,1fr)}.aac-features article:nth-child(3){border-left:0;padding-left:0}.aac-features article:nth-child(n+3){border-top:1px solid var(--line)}}
@media(max-width:720px){.aac-intro{grid-template-columns:1fr}.aac-version{max-width:450px}.aac-gallery{grid-template-columns:1fr}.aac-shot img{height:auto;max-height:420px}.aac-guide-layout{grid-template-columns:1fr;padding-bottom:70px}.aac-guide-toc{position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 14px}.aac-guide-toc strong{grid-column:1/-1}.aac-guide-step{grid-template-columns:40px 1fr;gap:14px}}
@media(max-width:430px){.aac-features{grid-template-columns:1fr}.aac-features article,.aac-features article+article,.aac-features article:nth-child(3){border-left:0;border-top:1px solid var(--line);padding:20px 0}.aac-features article:first-child{border-top:0}}