:root{color-scheme:light;--paper:#F6F4EE;--ink:#4F322C;--muted:#74645E;--line:#DCCFC1;--accent:#4F322C;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:var(--paper)}*{box-sizing:border-box}body{margin:0;min-height:100svh;height:100dvh;display:grid;grid-template-rows:auto minmax(0,1fr) auto;padding:clamp(18px,3vw,48px) clamp(20px,6vw,100px);gap:clamp(12px,3vh,32px)}a{color:inherit}button,a{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible{outline:3px solid #4F322C;outline-offset:5px}.site-header{display:flex;align-items:center;justify-content:space-between;gap:20px}.site-header img{display:block;width:190px;height:auto}.site-header>span{font-size:13px;color:var(--muted)}main{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(32px,7vw,110px);align-items:center;min-height:0}.audience{font-size:13px;margin:0 0 24px;color:var(--muted)}h1{font-family:Georgia,'Times New Roman',serif;font-size:clamp(36px,4.7vw,70px);font-weight:400;letter-spacing:-.045em;line-height:1.07;margin:0 0 24px}.intro{font-size:clamp(15px,1.25vw,18px);line-height:1.6;max-width:37ch;margin:0}.access-note{font-size:13px;line-height:1.6;color:var(--muted);margin:24px 0 0}.blocks h2{font-size:14px;font-weight:400;margin:0 0 14px;color:var(--muted)}ol{list-style:none;padding:0;margin:0}.blocks li{border-top:1px solid var(--line);min-height:62px;display:flex;align-items:center;gap:18px}.blocks li:last-child{border-bottom:1px solid var(--line)}.block-index{font-size:12px;color:var(--muted);width:22px;flex:none}.unavailable>small{margin-left:auto;color:var(--muted);font-size:12px}.available a{width:100%;display:flex;align-items:center;gap:18px;text-decoration:none;padding:20px 0;color:var(--accent)}.available a:hover .enter{text-decoration:underline}.block-name{font-size:25px;font-family:Georgia,serif}.block-name small{display:block;font:12px/1.5 Arial,sans-serif;margin-top:5px;color:var(--muted)}.enter{margin-left:auto;font-size:14px;white-space:nowrap}footer{display:flex;align-items:center;justify-content:space-between;gap:20px;color:var(--muted)}footer button{border:0;background:none;color:inherit;padding:8px 0;font:12px Arial,sans-serif;text-decoration:underline;text-underline-offset:4px;cursor:pointer}.raoco-mark{width:76px;height:auto}
@media(max-width:650px){body{padding:18px 22px;gap:16px}.site-header img{width:156px}.site-header>span{display:none}main{grid-template-columns:1fr;gap:20px;align-content:center}.audience{margin-bottom:12px;font-size:12px}h1{font-size:38px;margin-bottom:14px}.intro{font-size:14px;line-height:1.5;max-width:44ch}.access-note{display:none}.blocks h2{margin-bottom:10px}.blocks li{min-height:43px;gap:14px}.available a{padding:12px 0;gap:14px}.block-name{font-size:22px}.block-name small{font-size:11px}.enter{font-size:12px}footer button{font-size:11px}}
@media(max-height:560px) and (min-width:651px){body{padding:14px 30px;gap:10px}.site-header img{width:150px}main{gap:40px}.audience{margin-bottom:12px}h1{font-size:38px;margin-bottom:14px}.intro{font-size:14px}.access-note{margin-top:12px;font-size:12px}.blocks li{min-height:40px}.available a{padding:10px 0}.blocks h2{margin-bottom:8px}.block-name{font-size:22px}}
@media(max-width:650px) and (max-height:690px){body{padding:12px 18px;gap:8px}main{gap:12px}.site-header img{width:140px}.audience{margin-bottom:8px}h1{font-size:30px;margin-bottom:10px}.intro{font-size:12px;line-height:1.4}.blocks li{min-height:36px}.available a{padding:8px 0}.blocks h2{font-size:12px;margin-bottom:6px}.block-name{font-size:20px}footer button{padding:4px 0}}
/* Short landscape retains the two-column desk instead of stacking off-screen. */
@media(orientation:landscape) and (max-height:480px) and (min-width:480px){body{padding:10px 20px;gap:8px}.site-header img{width:140px}.site-header>span{display:none}main{grid-template-columns:1fr 1fr;gap:24px;align-items:center;align-content:normal}.audience{font-size:11px;margin-bottom:8px}h1{font-size:clamp(25px,4vw,36px);margin-bottom:12px}.intro{font-size:12px;line-height:1.45}.access-note{display:none}.blocks h2{font-size:12px;margin-bottom:6px}.blocks li{min-height:32px;gap:10px}.available a{padding:7px 0;gap:10px}.block-name{font-size:20px}.block-name small{font-size:10px}.block-index{width:16px;font-size:10px}.unavailable>small{font-size:10px}.enter{font-size:11px}footer button{padding:4px 0}.raoco-mark{width:64px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

/* Bright Note: source-first desk and compact, readable notices. */
footer{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px 28px;align-items:end}.footer-notices{display:grid;gap:3px}.footer-notices p{font-size:11px;line-height:1.35;margin:0}.footer-utility{display:flex;align-items:center;gap:24px}.available a{color:#4F322C}.available .enter{font-weight:600}.available a:hover{color:#4F322C;background:#F8D4B044}.site-header img{object-fit:contain;object-position:left center}
@media(max-width:650px){footer{grid-template-columns:1fr;gap:7px}.footer-utility{justify-content:space-between}.footer-notices p{font-size:10px;line-height:1.3}.intro{max-width:38ch}h1{font-size:36px}}
@media(max-width:650px) and (max-height:690px){h1{font-size:28px;line-height:1.05;margin-bottom:8px}.blocks li{min-height:29px}.available a{padding:6px 0}.block-name{font-size:19px}.block-name small{margin-top:2px}.footer-notices p{font-size:9.5px;line-height:1.25}.footer-utility{height:20px}.introduction .audience{margin-bottom:6px}.intro{font-size:12px;line-height:1.35}}
@media(orientation:landscape) and (max-height:480px) and (min-width:480px){footer{grid-template-columns:minmax(0,1fr) auto;gap:14px}.footer-notices p{font-size:9px;line-height:1.2}.footer-utility{gap:16px}.blocks li{min-height:29px}.available a{padding:6px 0}.intro{font-size:12px}}
.legal-links{display:flex;gap:12px;align-items:center;font-size:11px;white-space:nowrap}.legal-links a{text-underline-offset:3px}
/* One clear mission, one explanation, and five compact block choices. */
html[data-theme=dark]{color-scheme:dark;--paper:#241C18;--ink:#F6F4EE;--muted:#D0C1B5;--line:#695344;--accent:#EAB65D}.site-header img{background:transparent}.introduction{display:grid;gap:22px}.introduction h1{font-size:clamp(32px,3.6vw,52px);line-height:1.08;margin:0;letter-spacing:-.035em}.what-is{display:grid;gap:9px;max-width:60ch}.what-is h2{font:400 23px/1.2 Georgia,'Times New Roman',serif;margin:0}.what-is p{font-size:15px;line-height:1.5;margin:0}.what-is .source-exception{font-size:12px;line-height:1.35;color:var(--muted)}.available a{color:var(--ink)}.available a:hover{color:var(--ink)}html[data-theme=dark] .available a:hover{background:#3D2D24}footer a:focus-visible,footer button:focus-visible{outline-color:var(--ink)}
@media(max-width:650px){body{padding:16px 22px;gap:12px}main{gap:22px}.introduction{gap:18px}.introduction h1{font-size:33px;line-height:1.08}.what-is{gap:7px}.what-is h2{font-size:20px}.what-is p{font-size:14px;line-height:1.45}.what-is .source-exception{font-size:12px}.blocks ol{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.blocks li,.blocks li:last-child{border:1px solid var(--line);border-radius:5px;min-height:62px;display:flex;flex-direction:column;justify-content:center;gap:5px;padding:8px}.block-index,.block-name small,.enter{display:none}.unavailable>small{margin:0;font-size:12px;white-space:nowrap}.available a{padding:0;display:flex;align-items:center;justify-content:center;height:100%}.block-name{font:600 15px/1.3 Arial,sans-serif}.unavailable>span:not(.block-index){font-size:14px}.available{background:#F8D4B0;color:#4F322C}.available a{color:#4F322C}.available a:hover{background:transparent;color:#4F322C}.footer-notices p{font-size:12px;line-height:1.3}.footer-utility{gap:10px}.footer-utility button,.legal-links{font-size:12px}.raoco-mark{width:64px}footer{gap:8px}.blocks h2{font-size:13px}}
@media(max-width:650px) and (max-height:690px){body{padding:12px 18px;gap:9px}main{gap:14px}.introduction{gap:14px}.introduction h1{font-size:27px}.what-is{gap:6px}.what-is h2{font-size:18px}.what-is p{font-size:13px;line-height:1.38}.what-is .source-exception{font-size:12px}.blocks li,.blocks li:last-child{min-height:49px;padding:6px;gap:3px}.blocks ol{gap:6px}.site-header img{width:140px}.footer-notices p{font-size:12px;line-height:1.25}.footer-utility{height:auto;min-height:20px}.blocks h2{margin-bottom:6px}.introduction h1{letter-spacing:-.035em}}
@media(max-width:360px) and (max-height:560px){body{padding:10px 16px;gap:7px}main{gap:10px}.introduction{gap:10px}.introduction h1{font-size:22px;line-height:1.07}.what-is h2{font-size:16px}.what-is{gap:4px}.what-is p{font-size:13px;line-height:1.32}.what-is .source-exception{font-size:12px}.blocks li,.blocks li:last-child{min-height:44px}.site-header img{width:130px}.footer-notices p{font-size:12px;line-height:1.25}footer{gap:5px}.footer-utility{gap:8px}.footer-utility button,.legal-links{font-size:12px}.legal-links{gap:10px}.raoco-mark{width:56px}}
@media(orientation:landscape) and (max-height:480px) and (min-width:480px){body{padding:10px 18px;gap:7px}main{grid-template-columns:1.25fr 1fr;gap:26px}.introduction{gap:10px}.introduction h1{font-size:24px;line-height:1.05}.what-is{gap:4px}.what-is h2{font-size:16px}.what-is p{font-size:12px;line-height:1.32}.what-is .source-exception{font-size:12px}.blocks ol{display:block}.blocks li,.blocks li:last-child{display:flex;flex-direction:row;min-height:29px;padding:0;gap:10px;border:0;border-top:1px solid var(--line);border-radius:0}.blocks li:last-child{border-bottom:1px solid var(--line)}.block-index{display:none}.available a{padding:8px 0;justify-content:flex-start}.block-name{font:400 18px/1.1 Georgia,serif}.unavailable>small{margin-left:auto;font-size:12px}.available{background:none}.available a{color:var(--ink)}footer{grid-template-columns:minmax(0,1fr) auto;gap:14px}.footer-notices p{font-size:12px;line-height:1.25}.footer-utility{gap:12px}.footer-utility button,.legal-links{font-size:12px}.site-header img{width:130px}}
html[data-theme=dark] a:focus-visible,html[data-theme=dark] button:focus-visible{outline-color:var(--ink)}
@media(max-width:650px){html[data-theme=dark] .available a:hover{background:transparent;color:#4F322C}}
/* Keep the full explanation above five readable choices on compact screens. */
@media(max-width:360px) and (max-height:600px){.blocks ol{grid-template-columns:repeat(5,minmax(0,1fr));gap:4px}.blocks li,.blocks li:last-child{min-height:54px;padding:5px 2px;gap:4px}.unavailable>span:not(.block-index),.block-name{font:600 12px/1.2 Arial,sans-serif}.unavailable>small{font-size:12px;line-height:1.1;white-space:normal;text-align:center}.blocks h2{font-size:12px;line-height:1.3}.introduction{gap:8px}main{gap:8px}}
@media(orientation:landscape) and (max-height:480px) and (min-width:480px){main{grid-template-columns:1.85fr 1fr;gap:20px}.introduction{gap:8px}}
/* A small invitation beside the study choices, using the supplied QR unchanged. */
.study-options{display:grid;gap:24px;min-width:0}.updates{display:grid;grid-template-columns:128px minmax(0,1fr);gap:18px;align-items:center;padding-top:18px;border-top:1px solid var(--line)}.updates-qr{position:relative;display:block;width:128px;height:128px;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:4px;flex:none}.updates-qr img{position:absolute;width:196.0417%;height:auto;max-width:none;left:50%;top:50%;transform:translate(-50%,-50%)}.updates-copy h2{font:400 22px/1.15 Georgia,'Times New Roman',serif;margin:0 0 8px}.updates-copy p{font-size:14px;line-height:1.4;margin:0 0 12px;max-width:30ch}.updates-join{min-height:44px;display:inline-flex;gap:8px;align-items:center;padding:10px 12px;border-radius:4px;background:#F8D4B0;color:#4F322C;text-decoration:none;font-size:13px;line-height:1.25;font-weight:600}.updates-join:hover{text-decoration:underline;text-underline-offset:3px}.updates-join:focus-visible,.updates-qr:focus-visible{outline:3px solid var(--ink);outline-offset:3px}
@media(max-width:650px){main{gap:18px}.study-options{gap:14px}.updates{grid-template-columns:112px minmax(0,1fr);padding-top:12px;gap:15px}.updates-qr{width:112px;height:112px}.updates-copy h2{font-size:20px;margin-bottom:5px}.updates-copy p{font-size:13px;line-height:1.35;margin-bottom:8px}.updates-join{font-size:12px;padding:9px 10px}}
@media(max-width:650px) and (max-height:690px){body{padding:10px 16px;gap:7px}main{gap:10px}.introduction{gap:8px}.introduction h1{font-size:23px;line-height:1.04}.what-is{gap:4px}.what-is h2{font-size:17px}.what-is p{font-size:12px;line-height:1.3}.study-options{gap:9px}.blocks ol{grid-template-columns:repeat(5,minmax(0,1fr));gap:4px}.blocks li,.blocks li:last-child{min-height:44px;padding:4px 2px}.unavailable>span:not(.block-index),.block-name{font:600 12px/1.2 Arial,sans-serif}.unavailable>small{font-size:11px;line-height:1.1;white-space:normal;text-align:center}.blocks h2{font-size:12px;line-height:1.25;margin-bottom:5px}.updates{padding-top:9px}.updates-copy h2{font-size:18px}.updates-copy p{font-size:12px;line-height:1.25}.updates-join{padding:8px;font-size:12px}.footer-notices p{font-size:12px}.site-header img{width:128px}}
@media(orientation:landscape) and (max-height:480px) and (min-width:480px){main{grid-template-columns:1.3fr 1fr;gap:18px}.study-options{gap:8px}.blocks ol{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:3px}.blocks li,.blocks li:last-child{min-height:40px;display:flex;flex-direction:column;border:1px solid var(--line);padding:3px;gap:3px}.blocks li .block-name,.unavailable>span:not(.block-index){font:600 11px/1.1 Arial,sans-serif}.unavailable>small{margin:0;font-size:10px;white-space:normal;text-align:center}.available a{padding:0;justify-content:center}.blocks h2{font-size:12px;line-height:1.2}.updates{grid-template-columns:100px minmax(0,1fr);gap:10px;padding-top:8px}.updates-qr{width:100px;height:100px}.updates-copy h2{font-size:17px;margin-bottom:4px}.updates-copy p{font-size:12px;line-height:1.2;margin-bottom:6px}.updates-join{font-size:11px;padding:7px}.introduction h1{font-size:20px}.what-is p{font-size:12px;line-height:1.25}.what-is h2{font-size:16px}.introduction{gap:7px}.what-is{gap:4px}}
.updates-compact-invitation{display:none}
@media(max-width:360px) and (max-height:560px){body{padding:8px;gap:6px}main{gap:7px}.introduction{gap:6px}.introduction h1{font-size:20px;line-height:1.04}.what-is{gap:3px}.what-is h2{font-size:16px}.what-is p{font-size:12px;line-height:1.25}.study-options{gap:7px}.blocks h2{font-size:12px;margin-bottom:4px}.blocks li,.blocks li:last-child{min-height:43px}.updates{grid-template-columns:48px minmax(0,1fr);gap:8px;padding-top:7px}.updates-qr{width:48px;height:48px;overflow:hidden}.updates-qr::after{content:'+';display:grid;place-items:center;position:absolute;right:0;bottom:0;width:17px;height:17px;background:var(--ink);color:var(--paper);font:600 16px/1 Arial,sans-serif;border-radius:2px 0 0 0}.updates-copy{display:grid;grid-template-columns:minmax(0,1fr) 104px;gap:2px 6px;align-items:center}.updates-copy h2{grid-column:1;font-size:15px;line-height:1.1;margin:0}.updates-copy p{grid-column:1;font-size:12px;line-height:1.2;margin:0}.updates-normal-invitation{display:none}.updates-compact-invitation{display:inline}.updates-join{grid-column:2;grid-row:1/3;min-height:44px;padding:7px;font-size:12px;line-height:1.2;gap:4px;justify-content:center}.updates-join svg{flex:none;width:12px;height:12px}footer{grid-template-columns:minmax(0,1fr) auto;gap:4px;align-items:center}.footer-notices p{font-size:12px;line-height:1.2;white-space:nowrap}.footer-utility{gap:8px;min-height:20px;justify-content:flex-end}#studydeck-notice-open{display:none}.legal-links{font-size:12px;gap:6px}.raoco-mark{width:42px}.site-header img{width:128px}}
/* Responsive flow candidate: readable full content reserves its own height. */
@media(max-width:1023px){
 body{height:auto;min-height:100svh;min-height:100dvh;display:flex;flex-direction:column;gap:24px;padding:20px 24px;font-size:15px;line-height:1.5;-webkit-text-size-adjust:100%}
 .site-header{flex:none;min-height:44px}.site-header>a{display:inline-flex;align-items:center;min-height:44px}.site-header img{width:164px;height:auto}
 main{flex:1 0 auto;min-height:auto;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;align-items:center;align-content:normal}
 .introduction{gap:20px}.introduction h1{font-size:34px;line-height:1.1;margin:0}.what-is{gap:10px;max-width:none}.what-is h2{font-size:22px;line-height:1.2}.what-is p{font-size:15px;line-height:1.5}
 .study-options{gap:24px}.blocks h2{font-size:14px;line-height:1.4;margin:0 0 12px}.blocks ol{display:block}.blocks li,.blocks li:last-child{min-height:56px;padding:0;display:flex;flex-direction:row;gap:12px;border:0;border-top:1px solid var(--line);border-radius:0}.blocks li:last-child{border-bottom:1px solid var(--line)}.blocks li .block-name{font:400 25px/1.2 Georgia,serif}.block-name small{display:block;font-size:14px}.unavailable>span:not(.block-index){font-size:16px}.unavailable>small{margin-left:auto;font-size:14px;line-height:1.35;white-space:nowrap}.available a{display:flex;min-height:44px;padding:14px 0;justify-content:flex-start}.available{background:none}.available a{color:var(--ink)}.enter{display:block;font-size:14px}
 .updates{grid-template-columns:128px minmax(0,1fr);gap:16px;padding-top:16px}.updates-qr{width:128px;height:128px}.updates-qr::after{display:none}.updates-copy{display:block}.updates-copy h2{font-size:22px;line-height:1.2;margin:0 0 8px}.updates-copy p{font-size:14px;line-height:1.45;margin:0 0 12px}.updates-normal-invitation{display:inline}.updates-compact-invitation{display:none}.updates-join{display:inline-flex;min-height:44px;gap:8px;padding:10px 12px;font-size:14px;line-height:1.3;grid-column:auto;grid-row:auto}.updates-join svg{width:14px;height:14px}
 footer{flex:none;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;margin:0;padding:0}.footer-notices p{font-size:14px;line-height:1.4;white-space:normal}.footer-utility{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;min-height:44px;gap:16px}footer button,#studydeck-notice-open{display:inline-block;min-height:44px;font-size:14px;line-height:1.4;padding:8px 0}.legal-links{font-size:14px;gap:16px}.legal-links a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:44px}.raoco-mark{width:64px;height:auto}
}
@media(max-width:767px){
 body{padding:16px;gap:18px;font-size:14px}main{display:flex;flex-direction:column;align-items:stretch;gap:24px}.introduction{gap:18px}.introduction h1{font-size:28px;line-height:1.1}.what-is{gap:8px}.what-is h2{font-size:22px}.what-is p{font-size:14px;line-height:1.45}
 .study-options{gap:20px}.blocks ol{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.blocks li,.blocks li:last-child{display:flex;flex-direction:column;justify-content:center;min-height:64px;padding:8px;gap:5px;border:1px solid var(--line);border-radius:5px}.unavailable>span:not(.block-index),.blocks li .block-name{font:600 15px/1.3 Arial,sans-serif}.unavailable>small{margin:0;font-size:14px;line-height:1.3;white-space:normal;text-align:center}.block-index,.block-name small,.enter{display:none}.available a{width:100%;height:100%;min-height:44px;justify-content:center;padding:0}.available{background:#F8D4B0}.available a,.available a:hover{color:#4F322C}.blocks h2{margin-bottom:10px}
 .updates{grid-template-columns:112px minmax(0,1fr);gap:16px}.updates-qr{width:112px;height:112px}.updates-copy h2{font-size:21px}.updates-copy p{font-size:14px}.updates-join{font-size:14px;min-height:44px}.footer-utility{width:100%;gap:12px}.footer-notices p{font-size:14px}.legal-links{gap:12px}.raoco-mark{width:58px}
}