:root{--paper:#f5f1e9;--ink:#2d302c;--muted:#696b62;--copper:#98462d;--line:#d8d7cb;--gold:#e5b65d;--dark:#172b2c}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:32px}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,Helvetica,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit}button,a{ -webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,#scene:focus-visible{outline:3px solid var(--copper);outline-offset:6px}a,button{touch-action:manipulation}.skip{position:fixed;top:-100px;left:16px;padding:12px 20px;background:var(--ink);color:white;z-index:20}.skip:focus{top:16px}.site-header{max-width:1440px;padding:28px 5%;margin:auto;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:24px}.wordmark{font-weight:700;font-size:42px;letter-spacing:-3px;line-height:1}.brand-dot{color:var(--copper)}.header-note{font-size:14px;color:var(--muted);margin-left:48px}.nav-link{font-size:14px;border-bottom:1px solid var(--ink);padding:9px 0}.nav-link:hover,.text-link:hover{color:var(--copper)}main{max-width:1440px;margin:auto;padding:0 5%}.hero{display:grid;grid-template-columns:.87fr 1.13fr;gap:5%;align-items:center;padding:64px 0 68px;min-height:810px}.eyebrow{font-size:12px;font-weight:600;letter-spacing:.14em;margin:0 0 24px;line-height:1.5}.intro h1{font-weight:500;letter-spacing:-.07em;font-size:clamp(70px,7.8vw,112px);line-height:.97;margin:0 0 30px}.intro h1 span{color:var(--copper);font-family:Georgia,'Times New Roman',serif;font-style:italic;font-weight:400;letter-spacing:-.055em}.lead{font-size:clamp(22px,2.1vw,29px);line-height:1.27;letter-spacing:-.03em;margin:0 0 20px}.intro-copy{max-width:330px;font-size:17px;line-height:1.6;color:var(--muted);margin:0 0 26px}.text-link{font-size:15px;display:inline-flex;align-items:center;gap:14px;padding:4px 0}.line{height:1px;width:35px;background:currentColor}.intro-footer{display:flex;gap:16px;align-items:center;color:var(--muted);font-size:12px;line-height:1.5;margin-top:58px}.tiny-orbit{color:var(--copper);font-size:43px;font-weight:400;line-height:1}.stage-wrap{min-width:0}.stage{position:relative;background:radial-gradient(ellipse at 50% 55%,#30413b,#16292b 85%);height:616px;border-radius:220px 220px 26px 26px;overflow:hidden;isolation:isolate}.stage-top{display:flex;justify-content:space-between;position:absolute;top:44px;left:36px;right:36px;z-index:3;align-items:center;color:#d0d7c9;pointer-events:none}.stage-tag{font-size:10px;letter-spacing:.12em;line-height:1.5;max-width:100px;padding-left:28px}.dimension{font-family:Georgia,serif;font-size:26px;color:#e1b660;padding-right:18px}.model-fallback{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:opacity .5s}.stage.loaded .model-fallback{opacity:0;pointer-events:none}#scene{position:absolute;inset:0;z-index:2;cursor:grab;touch-action:pan-y}#scene:active{cursor:grabbing}#scene canvas{display:block;width:100%;height:100%;touch-action:pan-y!important}.stage-caption{position:absolute;bottom:32px;left:32px;right:32px;z-index:3;display:flex;align-items:flex-end;justify-content:space-between;gap:20px;color:var(--paper);pointer-events:none}.scene-names{font-size:19px;font-weight:600;letter-spacing:-.025em;white-space:nowrap}.scene-names i{font-family:Georgia,serif;color:var(--gold);font-weight:400}.scene-sub{max-width:120px;color:#d0d7c9;font-size:12px;text-align:right;line-height:1.5}.loading-note{position:absolute;bottom:94px;left:20px;right:20px;text-align:center;font-size:13px;color:white;padding:8px;z-index:4}.stage.loaded .loading-note{display:none}.viewer-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:18px;min-height:42px}.viewer-toolbar p{font-size:12px;color:var(--muted);margin:0;line-height:1.5}.viewer-toolbar p span{padding:0 3px}.viewer-buttons{display:flex;gap:8px;flex-shrink:0}.viewer-buttons button{border:1px solid #c8c9bd;color:var(--ink);background:transparent;border-radius:30px;display:flex;align-items:center;justify-content:center;gap:7px;padding:10px 13px;cursor:pointer;min-height:42px;min-width:42px;font-size:12px}.viewer-buttons button:hover{background:#e8e5da}.viewer-buttons button:disabled{opacity:.5;cursor:wait}.viewer-buttons svg{width:18px;height:18px}.motion-icon{font-size:14px;min-width:14px}.about{padding:76px 0 54px;border-top:1px solid var(--line);display:grid;grid-template-columns:1.04fr 1fr;gap:12%;align-items:start}.about h2{font-size:clamp(34px,4vw,50px);line-height:1.13;font-weight:400;letter-spacing:-.045em;margin:0}.about h2 em{font-family:Georgia,serif;color:var(--copper);font-weight:400}.about-body{padding-top:40px}.about-body p{font-size:17px;line-height:1.75;margin:0 0 16px}.about-body p+p{color:var(--muted)}.ways{display:grid;grid-template-columns:repeat(3,1fr);gap:42px;padding-bottom:78px}.ways article{border-top:1px solid var(--line);padding-top:24px}.number{font-size:12px;color:var(--copper)}.ways h3{font-size:22px;letter-spacing:-.025em;font-weight:500;margin:22px 0 12px}.ways p{max-width:270px;font-size:15px;line-height:1.7;color:var(--muted);margin:0}.spark-note{background:#e9e5d8;border-radius:18px;display:grid;grid-template-columns:70px 1fr auto;align-items:center;gap:28px;padding:42px;margin-bottom:70px}.spark-symbol{color:var(--copper);font-size:80px;line-height:1;align-self:center}.spark-note .eyebrow{margin:0 0 10px;font-size:10px}.spark-note h2{font-family:Georgia,serif;font-style:italic;font-weight:400;font-size:34px;letter-spacing:-.035em;margin:0 0 12px}.spark-note p:not(.eyebrow){font-size:15px;line-height:1.6;color:var(--muted);max-width:440px;margin:0}.game-link{display:block;font-size:12px;line-height:1.7;max-width:200px;padding:12px 0 12px 32px;border-left:1px solid #c9c6b7}.game-link span{display:block;font-size:16px;color:var(--copper);font-weight:600;margin-top:3px}.game-link:hover span{text-decoration:underline;text-underline-offset:5px}footer{max-width:1440px;margin:auto;padding:28px 5% 40px;display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);gap:20px}footer .wordmark{font-size:36px}footer p{font-size:13px;line-height:1.6;color:var(--muted);margin:0;text-align:center}.footer-mark{font-size:11px;letter-spacing:.1em;color:var(--muted)}.noscript{padding:20px;text-align:center;font-size:14px}
@media(min-width:1500px){.site-header,footer{padding-left:72px;padding-right:72px}main{padding:0 72px}}
@media(max-width:1000px){.hero{gap:4%;padding:52px 0;min-height:730px}.intro h1{font-size:80px}.stage{height:560px}.stage-caption{left:26px;right:26px}.scene-sub{display:none}.viewer-toolbar{gap:8px}.viewer-toolbar p{max-width:150px}.about{gap:8%}.ways{gap:24px}.spark-note{grid-template-columns:48px 1fr auto;padding:32px;gap:20px}.spark-symbol{font-size:62px}.game-link{max-width:155px;padding-left:22px}}
@media(max-width:720px){.site-header{padding:24px 6%;gap:18px}.wordmark{font-size:37px}.header-note{display:none}.nav-link{font-size:13px}main{padding:0 6%}.hero{grid-template-columns:1fr;padding:42px 0 48px;gap:32px;min-height:auto}.intro .eyebrow{margin-bottom:20px}.intro h1{font-size:76px;line-height:.99;margin-bottom:24px}.intro h1 br{display:none}.lead{font-size:24px;line-height:1.34;margin:0 0 16px}.lead br{display:none}.lead br::after{content:' '}.intro-copy{font-size:16px;line-height:1.65;max-width:350px;margin-bottom:18px}.intro-footer{display:none}.text-link{font-size:14px}.stage{height:460px;border-radius:150px 150px 22px 22px}.stage-top{top:30px;left:22px;right:22px}.stage-tag{font-size:9px;padding-left:13px;max-width:100px}.dimension{font-size:24px;padding-right:10px}.stage-caption{bottom:25px;left:25px;right:25px}.scene-sub{display:block;max-width:105px;font-size:11px}.scene-names{font-size:18px}.viewer-toolbar{margin-top:14px}.viewer-toolbar p{max-width:none;font-size:11px}.viewer-buttons button{padding:10px 11px}.about{padding:48px 0 32px;grid-template-columns:1fr;gap:28px}.about .eyebrow{margin-bottom:20px}.about h2{font-size:38px;line-height:1.18}.about-body{padding:0}.about-body p{font-size:16px;line-height:1.75}.ways{grid-template-columns:1fr;padding-bottom:45px;gap:25px}.ways article{display:grid;grid-template-columns:42px 1fr;gap:0 5px;padding-top:22px}.number{grid-row:1/3;padding-top:6px}.ways h3{font-size:22px;margin:0 0 10px}.ways p{font-size:15px;max-width:100%;grid-column:2}.spark-note{grid-template-columns:34px 1fr;padding:28px 22px;gap:16px;margin-bottom:44px}.spark-symbol{font-size:44px;align-self:start;margin-top:20px}.spark-note h2{font-size:29px}.spark-note p:not(.eyebrow){font-size:14px}.game-link{grid-column:2;padding:18px 0 0;margin-top:4px;border-left:0;border-top:1px solid #c9c6b7;max-width:none}.game-link span{font-size:15px}footer{padding:25px 6% 30px}footer p{text-align:right;font-size:12px}.footer-mark{display:none}}
@media(max-width:360px){.intro h1{font-size:66px}.stage{height:410px}.viewer-toolbar p{max-width:135px}.scene-sub{display:none}.spark-note{padding:25px 18px;gap:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}
/* Legible compact controls and labels across devices. */
.stage-tag,.spark-note .eyebrow{font-size:12px}.stage-tag{max-width:150px}.viewer-buttons button{font-size:14px}.ways p,.spark-note p:not(.eyebrow){font-size:16px}.game-link{font-size:14px}.footer-mark{font-size:12px}@media(max-width:720px){.nav-link{font-size:14px}.stage-tag{font-size:12px;max-width:135px}.viewer-toolbar p,.scene-sub{font-size:12px}.viewer-toolbar p{max-width:155px}.spark-note p:not(.eyebrow){font-size:16px}}
/* Keep the frame label inside the curved top at every screen width. */
.stage-top{left:0;right:0;top:38px;justify-content:center;gap:24px}.stage-tag{padding:0;max-width:none;text-align:center}.dimension{padding:0}.stage::after{content:'';position:absolute;inset:70% 0 0;z-index:2;background:linear-gradient(transparent,rgba(8,20,22,.62));pointer-events:none}@media(max-width:720px){.stage-top{top:27px;flex-direction:column;gap:7px}.stage-tag{max-width:none;font-size:12px}.dimension{font-size:20px}}
/* BIA's people, movement and embedded conversation. */
.site-nav{display:flex;align-items:center;gap:26px}.chat-nav{background:var(--copper);color:var(--paper);font-size:14px;padding:12px 20px;border-radius:24px;line-height:1.25}.chat-nav:hover,.chat-open:hover{background:#78331f}.movement{display:grid;grid-template-columns:1fr 1fr;gap:10%;padding:52px 0 62px;border-top:1px solid var(--line)}.movement .eyebrow{margin-bottom:18px}.movement h2{font-size:32px;font-weight:400;letter-spacing:-.035em;line-height:1.2;margin:0 0 20px}.movement h2 em{font-family:Georgia,serif;color:var(--copper);font-weight:400}.movement p:not(.eyebrow){font-size:16px;line-height:1.75;color:var(--muted);max-width:470px;margin:0 0 22px}.conversation{display:grid;grid-template-columns:.64fr 1fr;gap:8%;padding:62px 0 72px;border-top:1px solid var(--line);align-items:start;scroll-margin-top:24px}.conversation-intro{padding-top:22px}.conversation h2{font-size:clamp(42px,4.8vw,64px);font-weight:400;letter-spacing:-.05em;line-height:1.04;margin:0 0 28px}.conversation h2 em{font-family:Georgia,serif;color:var(--copper);font-weight:400}.conversation-intro>p:not(.eyebrow){font-size:17px;line-height:1.7;color:var(--muted);max-width:310px;margin:0 0 24px}.conversation-intro>.chat-provider{font-size:14px!important}.chat-provider a{text-decoration:underline;text-underline-offset:4px}.chat-open{display:inline-block;border-radius:26px;padding:14px 20px;font-size:14px;line-height:1.4;background:var(--copper);color:var(--paper);margin:4px 0 14px}.conversation-intro>.chat-help{font-size:12px!important;max-width:245px!important}.chat-shell{background:#fff;border:1px solid #d8d7cb;border-radius:24px;overflow:hidden;box-shadow:0 16px 50px rgba(45,48,44,.07);min-width:0}.bia-chat-frame{display:block;width:100%;height:650px;border:0;background:#fff}.spark-note{margin-top:0}@media(max-width:1000px){.site-nav{gap:18px}.conversation{gap:5%;grid-template-columns:.6fr 1fr}.conversation h2{font-size:46px}.chat-open{padding:14px 17px}}@media(max-width:720px){.site-nav{gap:14px}.site-nav .nav-link{font-size:12px}.chat-nav{font-size:14px;padding:11px 16px}.movement{grid-template-columns:1fr;gap:38px;padding:40px 0}.movement h2{font-size:30px;margin-bottom:16px}.movement p:not(.eyebrow){max-width:none}.conversation{grid-template-columns:1fr;gap:26px;padding:42px 0 46px}.conversation-intro{padding:0}.conversation .eyebrow{margin-bottom:18px}.conversation h2{font-size:44px;line-height:1.1;margin-bottom:20px}.conversation h2 br{display:none}.conversation-intro>p:not(.eyebrow){font-size:16px;max-width:none;margin-bottom:16px}.conversation-intro>.chat-help{max-width:none!important;margin-bottom:0}.chat-shell{border-radius:18px}.bia-chat-frame{height:650px;min-height:560px;max-height:85svh}}@media(max-width:380px){.site-nav{gap:12px}.site-nav .nav-link{font-size:12px}.chat-nav{padding:10px 13px}.site-header{gap:14px}.conversation h2{font-size:40px}}
/* Extend the original wordmark into bia.chat without crowding phone headers. */
.wordmark{white-space:nowrap}.wordmark .brand-dot{letter-spacing:-.065em}@media(max-width:720px){.site-header>.wordmark{font-size:32px;letter-spacing:-2px}footer .wordmark{font-size:30px;letter-spacing:-2px}}@media(max-width:480px){.site-nav .nav-link{display:none}.site-nav{gap:0}.site-header{gap:16px}}
/* Keep the original bia. mark; chat is a quiet, baseline-aligned suffix. */
.wordmark .brand-dot{letter-spacing:inherit}.brand-suffix{font-size:.5em;letter-spacing:-.035em;color:var(--copper);margin-left:.03em;vertical-align:baseline}@media(max-width:720px){.site-header>.wordmark{font-size:37px;letter-spacing:-3px}footer .wordmark{font-size:36px;letter-spacing:-3px}}
/* Static BIA + Spark illustration, inside the original arched frame. */
.stage{margin:0}.hero-art{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center top;display:block}