:root{--bg:#101211;--panel:#191c19;--line:#353a31;--ink:#f5f6eb;--muted:#b0b5a7;--yellow:#edff00;--cyan:#58e7d4;--display:Impact,'Arial Narrow',sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:94px}body{margin:0;background:var(--bg);color:var(--ink);font-family:Arial,Helvetica,sans-serif;font-size:15px;line-height:1.6}a{color:inherit}button,input{font:inherit}button,a,input,summary{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--cyan);outline-offset:5px}[hidden]{display:none!important}.wrap{max-width:1240px;margin:auto;padding-left:40px;padding-right:40px}header{height:88px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:50px;padding:0 40px;max-width:1600px;margin:auto}.wordmark{width:152px;height:57px;object-fit:contain}nav{display:flex;gap:32px}nav a{text-decoration:none;font-size:13px;font-weight:600}nav a:hover{color:var(--yellow)}.header-tag{margin-left:auto;font:10px monospace;letter-spacing:1px;color:var(--muted);display:flex;gap:9px;align-items:center}.header-tag i{height:6px;width:6px;background:var(--yellow);border-radius:50%}.hero{display:grid;grid-template-columns:1.35fr 1fr;align-items:center;gap:20px;min-height:675px;padding-top:60px;padding-bottom:65px}.eyebrow{font:11px monospace;letter-spacing:1.5px;display:flex;align-items:center;gap:10px;margin:0 0 26px}.tiny-square{width:8px;height:8px;background:var(--yellow)}.edition{color:#6e7666;margin-left:12px}h1,h2{font-family:var(--display);font-weight:900;line-height:.98;letter-spacing:-1px;margin:0}h1{font-size:clamp(56px,6.9vw,91px)}h1 em,h2 em{color:var(--yellow);font-style:normal}h2{font-size:clamp(42px,5.3vw,64px)}.hero-description{font-size:16px;color:var(--muted);margin:28px 0 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67%)}.hero-art:before{content:'';position:absolute;inset:50px 0 30px;background:linear-gradient(#afc79d0c 1px,transparent 1px),linear-gradient(90deg,#afc79d0c 1px,transparent 1px);background-size:28px 28px;transform:rotate(-8deg);border:1px solid #afc79d15}.orbit-label{position:absolute;right:2px;top:22px;transform:rotate(9deg);color:var(--yellow);border:1px solid var(--yellow);padding:6px 13px;font:10px monospace;letter-spacing:1px}.machine{width:275px;transform:rotate(8deg);border:2px solid #5d6643;background:#22271b;border-radius:18px;padding:13px 15px 16px;box-shadow:8px 12px 0 #080b08,10px 14px 0 #596300,0 20px 65px #0009;position:relative}.machine-screws{display:flex;justify-content:space-between;font:14px monospace;color:#8b925f;margin:-7px -3px 3px}.device-screen{background:#080b07;border:4px solid #080b07;box-shadow:0 0 0 1px #5a6249;min-height:242px;padding:8px}.device-screen img{width:100%;height:94px;object-fit:cover;image-rendering:pixelated}.screen-rule{font:16px 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#da87ef;border-radius:50%;width:29px;height:29px;text-align:center;font:13px monospace;line-height:25px;color:#150c20;box-shadow:2px 3px #070707}.device-name{font-family:var(--display);font-size:22px;letter-spacing:2px;margin-top:7px;text-align:center;color:var(--yellow)}.device-name b{font-family:Arial;margin-left:10px}.art-cross{position:absolute;font:33px monospace;color:var(--yellow)}.cross-one{left:15px;top:135px}.cross-two{right:12px;bottom:90px;color:var(--cyan)}.art-caption{position:absolute;bottom:5px;font:9px monospace;letter-spacing:1px;color:#82906c}.ticker{background:var(--yellow);color:#11180a;display:flex;overflow:hidden;gap:45px;padding:13px 0;justify-content:center;white-space:nowrap;font:22px var(--display);letter-spacing:1px;transform:rotate(-1deg);margin:0 0 15px}.ticker span:after{content:'✳';margin-left:45px;font-size:18px}.section{padding-top:100px;padding-bottom:100px;scroll-margin-top:10px}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:42px;gap:35px}.section-heading .eyebrow{color:#a3ae8d;margin-bottom:18px}.section-heading>p{color:var(--muted);font-size:14px;padding-bottom:2px}.flash-layout{display:grid;grid-template-columns:1.45fr 1fr;gap:64px}.tool-panel{padding:30px;border:1px solid var(--line);background:var(--panel);border-radius:5px}.panel-title{display:flex;gap:15px;justify-content:space-between;align-items:center;font:11px monospace;letter-spacing:1px;border-bottom:1px solid var(--line);padding-bottom:21px;margin-bottom:25px}.chip{color:var(--yellow);font:9px monospace;letter-spacing:.5px;background:#edff0010;padding:5px 7px;white-space:nowrap}.chip.cyan{color:var(--cyan);background:#58e7d410}.board-picker{border:0;padding:0;margin:0}.board-picker 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h3,.movie-explainer h3{font-size:23px;margin:0 0 14px}.install-aside p,.movie-explainer p{color:var(--muted);font-size:14px}.install-aside strong{color:var(--ink)}.release-note{margin:26px 0;padding:20px;border-left:2px solid #899a36;background:#ffffff04}.release-note>span{font:10px monospace;letter-spacing:1px;color:var(--yellow)}.release-note ul{padding-left:16px;font-size:12px;color:var(--muted);line-height:2}.release-note small{font-size:10px;color:#a5ac99;line-height:1.7;display:block}.converter-section{background:#151915;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.converter-layout{display:grid;grid-template-columns:1.45fr 1fr;gap:64px}.drop-zone{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;border:1px dashed #647250;background:#10160c;padding:22px 12px;min-height:210px;position:relative;cursor:pointer}.drop-zone:hover,.drop-zone.dragging{border-color:var(--yellow);background:#edff0006}.drop-zone 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p:not(.eyebrow){font-size:13px;color:var(--muted)}pre{margin:0;font:12px/2 monospace;overflow:auto;color:#e2e7d8}pre span{color:var(--yellow)}pre i{font-style:normal;color:#8f9e80}.wide-details{padding:20px 0;border-bottom:1px solid var(--line)}.downloads-section{background:#1b2017;border-top:1px solid var(--line)}.download-list{border-top:1px solid #4a533e}.download-list a{display:grid;grid-template-columns:130px 1fr 190px 25px;gap:15px;align-items:center;text-decoration:none;padding:23px 5px;border-bottom:1px solid #3f4835}.download-list a:hover{background:#edff0006}.download-kind{font:10px monospace;color:var(--yellow);letter-spacing:1px}.download-list strong{font-size:20px;font-weight:500}.download-list a>span:nth-last-child(2){font-size:12px;color:var(--muted)}.download-list b{font-size:23px;color:var(--yellow)}.faq-row{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:24px}.faq-row details{border-top:0}footer{display:flex;justify-content:space-between;align-items:center;gap:30px;padding-top:40px!important;padding-bottom:45px!important}footer p{font-size:12px;color:var(--muted);margin:5px 0}footer small{font-size:10px;color:#7f8b72}footer a{text-decoration:none}footer a:hover{color:var(--yellow)}.credits-links{display:flex;gap:20px;font-size:10px;margin-top:12px}.back-top{border:1px solid var(--line);width:40px;height:40px;text-align:center;padding-top:5px;font-size:22px}.skip{position:absolute;left:10px;top:-80px;background:var(--yellow);color:#111;padding:10px;z-index:100}.skip:focus{top:10px}esp-web-install-button{--esp-tools-button-color:var(--yellow);--esp-tools-button-text-color:#111;--esp-tools-border-radius:3px}.error{color:#ffad96}@media(min-width:1500px){header{padding:0 80px}}@media(max-width:1000px){.wrap{padding-left:28px;padding-right:28px}header{gap:28px;padding:0 28px}.header-tag{display:none}nav{margin-left:auto;gap:23px}.hero{min-height:610px}.hero-spec{line-height:2}.hero-art{transform:scale(.88);margin:0 -20px}.flash-layout,.converter-layout{gap:32px}.tool-panel{padding:23px}.section{padding-top:75px;padding-bottom:75px}.download-list a{grid-template-columns:100px 1fr 150px 20px}.sd-layout{padding:28px;grid-template-columns:1fr 1.7fr}pre{font-size:11px}}@media(max-width:700px){html{scroll-padding-top:72px}header{height:72px;padding:0 20px;gap:15px;position:relative}.wordmark{width:112px;height:46px}nav{gap:15px}nav a{font-size:11px}nav a:last-child{display:none}.wrap{padding-left:22px;padding-right:22px}.hero{display:flex;flex-direction:column;padding-top:44px;padding-bottom:25px;gap:15px}.hero-copy{width:100%}h1{font-size:clamp(49px,12vw,78px)}.hero-description{font-size:14px;margin:22px 0}.hero-actions{gap:20px}.hero-spec{margin-top:25px;font-size:8px;gap:10px}.hero-spec span+span:before{margin-right:10px}.hero-art{width:100%;min-height:470px;transform:scale(.9);margin:-5px 0 -20px}.orbit-label{right:0}.machine{width:260px}.art-cross.cross-one{left:10px}.ticker{font-size:19px;padding:10px 0}.section{padding-top:60px;padding-bottom:60px}.section-heading{display:block;margin-bottom:29px}.section-heading>p{margin-top:23px;font-size:13px}.section-heading .eyebrow{font-size:10px}.flash-layout,.converter-layout{grid-template-columns:1fr;gap:32px}.tool-panel{padding:22px}.panel-title{font-size:10px;letter-spacing:.3px;gap:8px}.chip{font-size:8px}.board-option{padding:15px 12px;gap:12px}.board-option strong{font-size:18px}.board-option small{font-size:10px}.install-aside{padding:0 5px}.big-step{font-size:32px}.release-note{margin:20px 0}.movie-explainer{padding:0 5px}.format-display>strong{font-size:45px}.guide-grid{grid-template-columns:1fr;gap:25px}.guide-grid h3{font-size:22px;margin-top:10px}.sd-layout{grid-template-columns:1fr;gap:20px;padding:23px 17px;margin-top:30px}.sd-layout h3 br{display:none}.sd-layout h3{font-size:35px}pre{font-size:10px}.download-list a{grid-template-columns:1fr 25px;gap:5px;padding:19px 0}.download-kind{grid-column:1;grid-row:1;font-size:9px}.download-list strong{grid-column:1;grid-row:2;font-size:19px}.download-list a>span:nth-last-child(2){grid-column:1;grid-row:3;font-size:11px}.download-list b{grid-column:2;grid-row:2}.faq-row{grid-template-columns:1fr;gap:0}.faq-row details{margin-top:8px}footer{flex-wrap:wrap;padding-top:30px!important;padding-bottom:30px!important}footer>div:nth-child(2){order:3;width:100%}.credits-links{gap:15px}.back-top{margin-left:auto}.convert-options{gap:10px}.text-link{font-size:12px}.hero .text-link{font-size:11px}h2{font-size:45px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}

/* Real case and firmware assets, replacing the generic handheld illustration. */
.hero-art.real-device{min-height:525px}.our-case{position:relative;width:280px;height:400px;margin:0;transform:rotate(6deg);filter:drop-shadow(12px 15px 9px #0009);overflow:visible}.case-render{position:absolute;width:100%;height:auto;top:0;left:0;clip-path:inset(0 0 6.5% 0 round 20px)}.actual-screen{position:absolute;left:14.14%;top:15.6%;width:71.72%;height:70.1%;object-fit:contain;background:#000}.our-case figcaption{position:absolute;top:103%;left:10%;font:9px monospace;letter-spacing:1px;color:#9ba981;white-space:nowrap}.spook{position:absolute;z-index:2;filter:drop-shadow(0 10px 18px #0008)}.ghost{width:80px;left:0;top:35px;transform:rotate(-16deg)}.pumpkin{width:100px;right:0;bottom:34px;transform:rotate(12deg)}.skin-proof{position:absolute;left:-18px;bottom:24px;width:145px;transform:rotate(-7deg);z-index:3;border:1px solid #647150;padding:5px;background:#121710;box-shadow:5px 7px 0 #0008}.skin-proof span{display:block;color:var(--cyan);font:7px monospace;letter-spacing:.5px;padding:2px 0 5px}.skin-proof img{display:block;width:100%;image-rendering:pixelated}.compact-aside .big-step{font-size:34px}.real-device .orbit-label{top:10px;right:0;transform:rotate(4deg)}
@media(max-width:700px){.hero-art.real-device{min-height:465px}.our-case{width:260px;height:371.43px}.real-device .ghost{left:0;top:26px;width:63px}.real-device .pumpkin{right:0;bottom:15px;width:82px}.skin-proof{left:-3px;bottom:8px;width:132px}.real-device .orbit-label{font-size:8px;top:1px}.section-heading>p{display:none}.section{padding-top:48px;padding-bottom:48px}}

.our-case{height:416.48px}.case-render{height:100%;clip-path:none}.actual-screen{left:10.45%;top:11.97%;width:79.1%;height:74.21%}@media(max-width:700px){.our-case{height:386.73px}}

.contributors{padding-top:48px;padding-bottom:48px;border-top:1px solid var(--line)}.contributors-heading{margin-bottom:28px}.contributors-heading .eyebrow{margin-bottom:12px;font-size:9px;color:var(--muted)}.contributors-heading h2{font-family:Arial,Helvetica,sans-serif;font-size:22px;line-height:1.3;letter-spacing:0;font-weight:600}.contributor-list{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.contributor{display:flex;align-items:center;gap:17px;text-decoration:none;min-width:0}.contributor strong{display:block;font-size:15px;font-weight:600}.contributor small{font-size:10px;display:block;color:var(--muted);margin-top:5px}.contributor-mark{width:75px;height:84px;flex-shrink:0;display:flex;align-items:center;justify-content:center}.contributor-mark img{width:100%;height:100%;object-fit:contain}.zeek-mark{border-radius:50%;width:74px;height:74px;overflow:hidden;border:1px solid #a545cf66}.zeek-mark img{object-fit:cover;object-position:center 45%}.root-mark{width:65px;height:74px;padding:8px}.contributor-footnote{font-size:10px;color:var(--muted);margin-top:28px;margin-bottom:0}.contributor-footnote a{color:var(--ink);text-decoration:none;margin-left:5px}.contributor-footnote a:hover,.contributor:hover strong{color:var(--yellow)}.yb-character-accent{display:flex;align-items:center;gap:10px;margin-bottom:15px}.yb-character-accent img{width:132px;height:83px;object-fit:contain;mix-blend-mode:screen}.yb-character-accent .big-step{font-size:28px;white-space:nowrap}@media(max-width:900px){.contributor-list{gap:20px}.contributor{gap:10px}.contributor strong{font-size:13px}.contributor-mark{width:60px;height:70px}.zeek-mark{width:60px;height:60px}.root-mark{width:52px;height:62px}.yb-character-accent{flex-wrap:wrap}}@media(max-width:700px){.contributors{padding-top:35px;padding-bottom:35px}.contributor-list{grid-template-columns:1fr;gap:24px}.contributor{gap:20px}.contributor strong{font-size:16px}.contributor-mark{width:67px;height:75px}.zeek-mark{width:67px;height:67px}.root-mark{width:67px;height:70px;padding:8px 13px}.contributors-heading h2{font-size:20px}.yb-character-accent img{width:116px;height:73px}.yb-character-accent .big-step{font-size:30px}.contributor-footnote{line-height:1.8}}

.soundtrack{display:grid;grid-template-columns:1fr 1.25fr auto;gap:25px;align-items:center;padding-top:30px;padding-bottom:26px;border-bottom:1px solid var(--line)}.soundtrack-heading{display:flex;align-items:center;gap:14px}.music-note{color:var(--cyan);font-size:29px}.soundtrack h2{font:12px monospace;letter-spacing:1px}.soundtrack p{font-size:10px;color:var(--muted);margin:7px 0 0;line-height:1.5}.music-track select{width:100%;color:var(--ink);border:1px solid var(--line);background:var(--panel);padding:10px 12px;border-radius:3px;font-size:12px}.music-settings{display:flex;gap:18px;align-items:center;margin-top:10px;font-size:10px;color:var(--muted)}.music-settings label{display:flex;gap:7px;align-items:center}.music-settings input[type=range]{width:74px;accent-color:var(--yellow);height:14px}.music-repeat input{accent-color:var(--yellow);margin:0}.music-buttons{display:flex;gap:9px}.music-buttons .button{padding:11px 15px;min-height:42px;font-size:12px;gap:0}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:950px){.soundtrack{grid-template-columns:1fr auto}.soundtrack-heading{grid-column:1/-1}.music-track{min-width:0}}@media(max-width:500px){.soundtrack{gap:18px;padding-top:25px;padding-bottom:25px}.music-buttons{flex-direction:column}.music-buttons .button{min-height:37px;padding:8px 12px}.music-settings{gap:10px;font-size:9px}.music-settings input[type=range]{width:55px}}

.composer-logo{width:52px;height:70px;object-fit:contain;flex-shrink:0;border-radius:4px}.soundtrack .composer-credit{color:var(--ink);font-size:10px;margin-top:7px}.composer-credit strong{font-weight:600;color:var(--cyan)}
/* Compact artist + player row under the navigation. */
.soundtrack{grid-template-columns:245px minmax(230px,1fr) auto;gap:20px;padding-top:12px;padding-bottom:12px}.soundtrack-heading{gap:10px}.composer-logo{width:32px;height:44px}.soundtrack h2{font-size:9px;letter-spacing:.65px}.soundtrack .composer-credit{font-size:10px;margin:3px 0 0}.soundtrack #music-status{font-size:9px;margin:3px 0 0;line-height:1.3}.music-track select{font-size:11px;padding:6px 9px}.music-settings{margin-top:5px;font-size:9px;gap:12px}.music-settings input[type=range]{width:62px;height:12px}.music-buttons{gap:7px}.music-buttons .button{min-height:32px;padding:7px 12px;font-size:11px}
@media(max-width:950px){.soundtrack{grid-template-columns:190px minmax(175px,1fr) auto;gap:12px}.soundtrack-heading{grid-column:auto}.music-buttons{flex-direction:column;gap:4px}.music-buttons .button{min-height:26px;padding:4px 9px;font-size:10px}.music-settings{gap:9px}.music-settings input[type=range]{width:45px}.composer-logo{width:29px;height:40px}}
@media(max-width:700px){.soundtrack{grid-template-columns:138px minmax(0,1fr) auto;gap:9px;padding-top:10px;padding-bottom:10px}.soundtrack-heading{gap:7px;min-width:0}.soundtrack h2{font-size:8px;letter-spacing:0}.composer-logo{width:25px;height:36px}.soundtrack .composer-credit{font-size:9px;line-height:1.3}.soundtrack #music-status{display:none}.music-track select{font-size:10px;padding:6px 4px;width:100%;min-width:0}.music-settings{font-size:8px;gap:6px;flex-wrap:wrap;margin-top:4px}.music-settings label{gap:4px}.music-settings input[type=range]{width:40px}.music-repeat input{width:11px;height:11px}.music-buttons .button{font-size:9px;padding:4px 7px;min-height:24px}}
@media(max-width:400px){.soundtrack{grid-template-columns:114px minmax(0,1fr) 47px;gap:6px}.soundtrack-heading{gap:5px}.soundtrack h2{font-size:7px}.composer-logo{width:23px;height:34px}.soundtrack .composer-credit{font-size:8px}.music-buttons .button{font-size:8px;padding:4px}.music-settings{font-size:7px}.music-track select{font-size:9px}}
/* Give the two brand marks more presence without enlarging the player controls. */
header .wordmark{width:215px;height:76px}header{gap:38px}.soundtrack{grid-template-columns:275px minmax(230px,1fr) auto}.soundtrack-heading{gap:13px}.composer-logo{width:48px;height:64px}
@media(max-width:1000px){header .wordmark{width:185px;height:68px}header{gap:22px}}
@media(max-width:950px){.soundtrack{grid-template-columns:215px minmax(175px,1fr) auto}.composer-logo{width:43px;height:58px}}
@media(max-width:700px){header .wordmark{width:155px;height:60px}header{gap:12px;padding-left:18px;padding-right:18px}nav{gap:12px}.soundtrack{grid-template-columns:155px minmax(0,1fr) auto}.soundtrack-heading{gap:8px}.composer-logo{width:37px;height:51px}}
@media(max-width:400px){header .wordmark{width:137px;height:55px}nav{gap:10px}nav a{font-size:10px}.soundtrack{grid-template-columns:130px minmax(0,1fr) 47px}.composer-logo{width:33px;height:46px}.soundtrack-heading{gap:6px}}
/* Center the wordmark inside its own header slot. */
header>a[aria-label="YellowB0i home"]{display:flex;align-items:center;justify-content:center;align-self:stretch;flex:0 0 235px}header .wordmark{display:block;object-position:center center}
@media(max-width:1000px){header>a[aria-label="YellowB0i home"]{flex-basis:195px}}
@media(max-width:700px){header>a[aria-label="YellowB0i home"]{flex-basis:160px}}
@media(max-width:400px){header>a[aria-label="YellowB0i home"]{flex-basis:140px}}
/* Let the title fill and center within the space before navigation. */
header{gap:28px}header>a[aria-label="YellowB0i home"]{flex:1 1 auto;min-width:0;justify-content:center}header .wordmark{width:min(100%,355px);height:82px}header nav{flex:0 0 auto;margin-left:0}header .header-tag{display:none}
@media(max-width:1000px){header{gap:24px}header>a[aria-label="YellowB0i home"]{flex:1 1 auto}header .wordmark{width:min(100%,320px);height:80px}}
@media(max-width:700px){header{height:82px;gap:18px}header>a[aria-label="YellowB0i home"]{flex:1 1 auto}header .wordmark{width:100%;max-width:245px;height:72px}header nav{gap:13px}}
@media(max-width:400px){header{gap:10px;padding-left:12px;padding-right:12px}header>a[aria-label="YellowB0i home"]{flex:1 1 auto}header .wordmark{width:100%;max-width:190px;height:68px}header nav{gap:9px}header nav a{font-size:9px}}

.download-list a.download-pending{opacity:.45;cursor:not-allowed;color:var(--muted)}.download-list a.download-pending strong,.download-list a.download-pending b{color:var(--muted)}.download-list a.download-pending:hover{background:transparent;color:var(--muted)}

.contributor-support{margin:12px 0 0;font-size:13px}.contributor-support a{color:var(--cyan);text-underline-offset:4px}.contributor-support a:hover{color:var(--yellow)}

/* YellowB0i stencil adds depth behind the game setup guide. */
#games{position:relative;isolation:isolate;overflow:hidden}
#games::before{content:"";position:absolute;z-index:-1;pointer-events:none;inset:0;background:url('/assets/yb-stencil.png') no-repeat right 30%;background-size:min(85%,850px) auto;opacity:.075}
@media(max-width:700px){#games::before{background-size:120% auto;background-position:center 18%;opacity:.05}}