/* Sela public experience. Pages are static HTML; SDK is lazy-loaded on /viewer/. */
:root{color-scheme:light;--p-bg:#f8fafc;--p-ink:#182336;--p-muted:#67758a;--p-card:#ffffffd9;--p-soft:#eef3fb;--p-line:#dce3ed;--p-accent:#4269ce;--p-accent-soft:#e5ecff;--p-shadow:0 24px 80px #173b7415;--p-glass:#ffffffbb;--p-fg-on-accent:#fff}
:root[data-public-theme=dark]{color-scheme:dark;--p-bg:#0c111b;--p-ink:#f1f4fb;--p-muted:#abb6c8;--p-card:#172130e3;--p-soft:#1b2a41;--p-line:#34435b;--p-accent:#9ab6ff;--p-accent-soft:#253758;--p-shadow:0 24px 90px #0006;--p-glass:#142033cf;--p-fg-on-accent:#111d36}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:94px}body{margin:0;font:400 16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,system-ui,sans-serif;color:var(--p-ink);background:radial-gradient(ellipse 55% 25% at 84% 4%,color-mix(in srgb,var(--p-accent) 18%,transparent),transparent),radial-gradient(ellipse 45% 28% at -5% 60%,color-mix(in srgb,var(--p-accent) 9%,transparent),transparent),var(--p-bg);min-height:100vh}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:wait;opacity:.62}a{color:inherit;text-decoration:none}a:hover{color:var(--p-accent)}:focus-visible{outline:3px solid var(--p-accent);outline-offset:3px}::selection{background:var(--p-accent-soft);color:var(--p-ink)}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.skip{position:absolute;left:14px;top:-100px;z-index:100;padding:8px 18px;background:var(--p-bg);border-radius:12px}.skip:focus{top:12px}
.container{width:min(1180px,calc(100% - 44px));margin-inline:auto}.site-header{position:sticky;top:0;z-index:50;background:var(--p-glass);-webkit-backdrop-filter:blur(24px) saturate(1.4);backdrop-filter:blur(24px) saturate(1.4);box-shadow:0 5px 25px #101b3110}.topbar{display:flex;align-items:center;gap:28px;min-height:76px}.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:760;letter-spacing:-.045em;white-space:nowrap}.brand img{width:34px;height:34px}.site-links{display:flex;align-items:center;gap:24px;margin-inline:auto;font-size:13px;font-weight:640}.site-links a{padding:9px 0;color:var(--p-muted)}.site-links a[aria-current=page],.site-links a:hover{color:var(--p-accent)}.header-actions{display:flex;align-items:center;gap:10px}.theme-toggle,.mobile-menu summary{display:grid;place-items:center;width:44px;height:44px;border:0;border-radius:999px;background:var(--p-soft);color:var(--p-ink)}.theme-toggle svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.theme-toggle .sun{display:none}:root[data-public-theme=dark] .theme-toggle .sun{display:block}:root[data-public-theme=dark] .theme-toggle .moon{display:none}.mobile-menu{display:none;position:relative}.mobile-menu summary{list-style:none;cursor:pointer}.mobile-menu summary::-webkit-details-marker{display:none}.mobile-dropdown{position:absolute;right:0;top:54px;width:min(260px,calc(100vw - 40px));padding:10px;border-radius:20px;background:var(--p-card);box-shadow:var(--p-shadow);-webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px)}.mobile-dropdown a{display:block;padding:12px 15px;border-radius:12px;font-weight:650}.mobile-dropdown a:hover{background:var(--p-soft)}
.pill,.eyebrow{font-size:11px;font-weight:800;letter-spacing:.15em;text-transform:uppercase;color:var(--p-accent)}.eyebrow{margin:0 0 15px}.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:46px;padding:11px 22px;border:0;border-radius:999px;font-weight:730;font-size:13px;line-height:1.3;white-space:nowrap;background:var(--p-soft);color:var(--p-ink);transition:transform .18s,background .18s}.button:hover{transform:translateY(-2px);color:var(--p-ink);background:color-mix(in srgb,var(--p-accent) 14%,var(--p-soft))}.button.primary{color:var(--p-fg-on-accent);background:var(--p-accent)}.button.primary:hover{color:var(--p-fg-on-accent);background:color-mix(in srgb,var(--p-accent) 86%,var(--p-bg))}.button.ghost{background:transparent}.button:active{transform:scale(.98)}.hero{display:grid;grid-template-columns:1.06fr .94fr;gap:clamp(36px,6vw,90px);align-items:center;padding-block:clamp(72px,10vw,132px) clamp(74px,9vw,115px)}h1,h2,h3,h4,p{margin-top:0}h1,h2,h3{letter-spacing:-.055em;line-height:1.12}h1{max-width:660px;font-size:clamp(49px,6.7vw,91px);font-weight:760;margin-bottom:27px}h1 em,.title-accent{font-style:normal;color:var(--p-accent)}.lead{font-size:clamp(16px,1.55vw,19px);color:var(--p-muted);max-width:560px;line-height:1.8;margin-bottom:28px}.hero-actions,.cta-actions{display:flex;flex-wrap:wrap;gap:12px}.trustline{display:flex;flex-wrap:wrap;gap:10px 20px;margin:23px 0 0;padding:0;list-style:none;color:var(--p-muted);font-size:12px}.trustline li:before{content:"✓";color:var(--p-accent);margin-right:7px}.showcase{position:relative;min-width:0;padding:18px;border-radius:30px;background:linear-gradient(135deg,color-mix(in srgb,var(--p-accent) 12%,var(--p-card)),var(--p-card) 55%);box-shadow:var(--p-shadow);transform:rotate(1deg)}.showcase::after{content:"";position:absolute;inset:auto 20% -25px 20%;height:50px;border-radius:50%;background:var(--p-accent);filter:blur(42px);opacity:.13;z-index:-1}.shelf-scene{padding:26px;border-radius:19px;background:var(--p-bg);min-height:325px}.scene-top{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--p-muted);border-bottom:1px solid var(--p-line);padding-bottom:16px}.scene-title{font-size:24px;letter-spacing:-.04em;margin-top:25px;margin-bottom:18px}.book-row{display:flex;gap:16px;align-items:flex-end}.book-cover{flex:1;min-width:0;aspect-ratio:.71;border-radius:5px 10px 10px 5px;box-shadow:6px 12px 25px #0002,inset 4px 0 5px #ffffff28;padding:15px 10px;color:#fff;display:flex;flex-direction:column;justify-content:space-between;font-weight:750;font-size:clamp(13px,1.8vw,21px);line-height:1.15;letter-spacing:-.045em}.book-cover small{font-size:9px;letter-spacing:.12em}.cover-one{background:linear-gradient(150deg,#47726f,#12293b)}.cover-two{background:linear-gradient(150deg,#e3ae79,#9b5271)}.cover-three{background:linear-gradient(150deg,#486cba,#152343)}.scene-progress{margin-top:24px;display:flex;align-items:center;gap:12px;font-size:11px;font-weight:680;color:var(--p-muted)}.scene-track{height:5px;border-radius:99px;flex:1;background:var(--p-line)}.scene-track:before{content:"";display:block;width:62%;height:100%;border-radius:inherit;background:var(--p-accent)}
.section{padding-block:clamp(56px,7vw,95px)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:22px;margin-bottom:32px}.section-head h2{max-width:750px;font-size:clamp(33px,4vw,55px);margin-bottom:0}.section-head p{max-width:350px;color:var(--p-muted);margin:0}.product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.product-panel{position:relative;overflow:hidden;padding:clamp(26px,4vw,48px);border-radius:27px;background:var(--p-card);box-shadow:0 15px 55px #18263c0e;min-height:350px}.product-panel:before{content:"";position:absolute;width:200px;height:200px;border-radius:50%;background:var(--p-accent-soft);right:-80px;top:-100px;filter:blur(8px);opacity:.7}.product-panel>*{position:relative}.product-panel .product-icon{display:grid;place-items:center;width:58px;height:58px;border-radius:20px;background:var(--p-accent-soft);font-size:28px;margin-bottom:28px}.product-panel h3{font-size:clamp(26px,3vw,36px);margin-bottom:10px}.product-panel p{color:var(--p-muted);max-width:450px;min-height:74px}.product-panel .button{margin-top:14px}.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.feature-item{padding-top:24px;border-top:1px solid var(--p-line)}.feature-item b{display:block;margin-bottom:10px;font-size:15px}.feature-item p{font-size:14px;color:var(--p-muted)}.cta-band{position:relative;overflow:hidden;border-radius:32px;padding:clamp(30px,5vw,64px);background:linear-gradient(120deg,color-mix(in srgb,var(--p-accent) 13%,var(--p-card)),var(--p-card));display:flex;justify-content:space-between;gap:28px;align-items:center}.cta-band h2{font-size:clamp(32px,4vw,52px);margin-bottom:10px}.cta-band p{color:var(--p-muted);max-width:530px;margin:0}.site-footer{margin-top:85px;border-top:1px solid var(--p-line);padding-block:32px 48px}.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;color:var(--p-muted);font-size:12px}.footer-inner .brand{color:var(--p-ink);font-size:15px}.footer-links{display:flex;flex-wrap:wrap;gap:18px}
.page-hero{padding-block:clamp(46px,7vw,90px) 34px}.page-hero h1{font-size:clamp(40px,5vw,67px);max-width:790px;margin-bottom:16px}.page-hero p{max-width:710px;color:var(--p-muted);font-size:17px}.breadcrumb{display:flex;gap:8px;align-items:center;color:var(--p-muted);font-size:12px;margin-bottom:30px}.breadcrumb a:hover{color:var(--p-accent)}
.playground-layout{display:grid;grid-template-columns:minmax(0,.86fr) minmax(0,1.14fr);gap:22px;align-items:start;margin-bottom:55px}.playground-config,.playground-preview,.guide-card{min-width:0;padding:clamp(20px,3vw,30px);background:var(--p-card);border-radius:25px;box-shadow:0 15px 60px #132e5111}.panel-title{font-size:22px;letter-spacing:-.04em;margin-bottom:6px}.panel-subtitle{font-size:13px;color:var(--p-muted);margin-bottom:23px}.form-fields{display:grid;gap:17px}.field{display:grid;gap:7px;min-width:0}.field label{font-size:12px;font-weight:730}.field select,.field input[type=file],.field input[type=text],.field input[type=search]{min-width:0;width:100%;height:46px;padding:10px 14px;border:1px solid var(--p-line);border-radius:13px;color:var(--p-ink);background:var(--p-bg);font-size:13px}.field input[type=file]{height:auto;max-width:100%}.field-tip{font-size:12px;color:var(--p-muted)}.inline-fields{display:grid;grid-template-columns:1fr 1fr;gap:12px}.preview-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}.preview-status{font-size:12px;color:var(--p-muted)}.reader-stage{position:relative;height:540px;max-height:75dvh;min-height:360px;overflow:hidden;border-radius:16px;background:linear-gradient(150deg,var(--p-soft),var(--p-bg));display:grid;place-items:center;text-align:center}.reader-stage>.stage-empty{padding:32px;max-width:330px;color:var(--p-muted);font-size:14px}.stage-empty strong{display:block;color:var(--p-ink);font-size:19px;margin-bottom:10px}.reader-stage:has(.library-reader-overlay)>.stage-empty{display:none}.playground-status{min-height:20px;color:var(--p-muted);font-size:12px;margin-top:12px}.code-section{padding:28px 0 45px}.code-section h2{font-size:clamp(29px,3.3vw,43px)}.code-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.code-panel{border-radius:22px;padding:20px;background:var(--p-card);min-width:0}.code-panel-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:10px}.code-panel-head h3{font-size:18px;letter-spacing:-.025em;margin:0}.copy-button{border:0;border-radius:999px;background:var(--p-soft);color:var(--p-ink);padding:7px 13px;font-size:12px;font-weight:750;min-height:38px}.copy-button:hover{background:var(--p-accent-soft)}pre{overflow-x:auto;border-radius:12px;background:#101c2d;color:#edf3ff;padding:20px;tab-size:2;font:12px/1.8 ui-monospace,SFMono-Regular,Consolas,monospace;max-width:100%;margin:0;white-space:pre}.code-help{font-size:12px;color:var(--p-muted);margin-top:12px}
.guide-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:44px;align-items:start}.guide-sidebar{position:sticky;top:105px;display:grid;gap:4px;padding:8px}.guide-sidebar a{padding:9px 13px;border-radius:12px;font-weight:650;font-size:13px;color:var(--p-muted)}.guide-sidebar a:hover,.guide-sidebar a:focus{background:var(--p-soft);color:var(--p-accent)}.guide-content{display:grid;gap:24px}.guide-card{scroll-margin-top:100px}.guide-card h2{font-size:clamp(26px,3vw,37px);margin:0 0 18px}.guide-card h3{font-size:18px;letter-spacing:-.025em;margin:22px 0 8px}.guide-card p,.guide-card li{font-size:14px;line-height:1.85;color:var(--p-muted)}.guide-card li{margin-bottom:6px}.guide-card strong{color:var(--p-ink)}.guide-card ol,.guide-card ul{padding-left:21px}.guide-card .button{margin-top:10px}.guide-card pre{margin-block:15px}.guide-card code:not(pre code){color:var(--p-accent);font:inherit;font-weight:650}.guide-card .simple-table{width:100%;border-collapse:collapse;font-size:13px}.simple-table th,.simple-table td{text-align:left;padding:10px;border-bottom:1px solid var(--p-line)}.simple-table th{color:var(--p-ink)}.simple-table td{color:var(--p-muted)}
@media(max-width:960px){.site-links{gap:14px}.hero{gap:25px}.playground-layout{grid-template-columns:1fr}.reader-stage{height:540px}.feature-grid{gap:13px}.guide-layout{gap:20px;grid-template-columns:175px minmax(0,1fr)}}
@media(max-width:720px){.container{width:min(100% - 32px,1180px)}.topbar{min-height:66px;gap:10px}.site-links{display:none}.mobile-menu{display:block}.header-actions{margin-left:auto;gap:7px}.header-actions>.button{min-height:42px;padding-inline:14px}.hero{grid-template-columns:1fr;padding-block:64px 55px;gap:45px}.hero h1{font-size:clamp(45px,10vw,67px)}.showcase{max-width:520px;margin-inline:auto}.section{padding-block:44px}.section-head{display:block}.section-head h2{font-size:clamp(30px,8vw,43px);margin-bottom:12px}.section-head p{max-width:580px}.product-grid,.feature-grid,.code-grid{grid-template-columns:1fr}.product-panel{min-height:0;padding:28px}.product-panel p{min-height:0}.cta-band{display:grid;gap:20px}.site-footer{margin-top:50px}.page-hero{padding-block:40px 20px}.page-hero h1{font-size:clamp(38px,9vw,55px)}.inline-fields{grid-template-columns:1fr}.reader-stage{height:500px}.guide-layout{grid-template-columns:1fr;gap:22px}.guide-sidebar{position:static;display:flex;gap:7px;overflow:auto;white-space:nowrap;padding:3px 0 8px}.guide-sidebar a{background:var(--p-soft);flex-shrink:0}.guide-card{padding:23px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important}}@media(prefers-reduced-transparency:reduce){.site-header,.mobile-dropdown{background:var(--p-bg);backdrop-filter:none;-webkit-backdrop-filter:none}.product-panel,.showcase,.playground-config,.playground-preview,.guide-card,.code-panel{background:var(--p-bg)}}
@media(max-width:560px){.header-actions>.button{display:none}.topbar{min-width:0}.site-header .brand{font-size:17px}.reader-stage{min-height:380px;height:460px}.playground-preview{padding:15px}.playground-config{padding:20px}.code-section{padding-top:10px}}
/* Compact phones and long imported filenames must never widen the page. */
.book-cover{overflow:hidden;overflow-wrap:anywhere}
.preview-toolbar>div{min-width:0}
.preview-status{display:block;max-width:100%;overflow-wrap:anywhere}
@media(max-width:380px){.book-cover{padding:10px 7px;font-size:11px}.book-cover small{font-size:8px}.shelf-scene{padding:19px}.book-row{gap:9px}}
/* Actual app shell proportions instead of unrelated fictitious bookshelf art. */
.sela-actual-preview{display:flex;flex-direction:column;overflow:hidden;padding:0;min-height:362px;border-radius:22px;color:#1b1b1f;background:radial-gradient(ellipse at 90% 20%,#dceeff,transparent 65%),radial-gradient(ellipse at 0 85%,#e7f3ff,transparent 70%),#f9fbff}
.actual-topbar{display:flex;align-items:center;justify-content:space-between;min-height:62px;padding:11px 16px;gap:8px;background:#ffffffe0}
.actual-brand{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:770}.actual-brand img{width:28px;height:28px;border-radius:8px}
.actual-top-actions{display:flex;align-items:center;gap:6px}.actual-round{width:30px;height:30px;border-radius:50%;background:white;box-shadow:0 4px 12px #112a4518;display:grid;place-items:center;font-size:18px}
.actual-round img{width:25px;height:25px;border-radius:50%;object-fit:cover}.actual-plus{background:#0066cc;color:white}
.actual-app-body{flex:1;padding:20px clamp(14px,4%,24px) 12px}.actual-eyebrow{margin:0 0 4px;font-size:9px;font-weight:740;letter-spacing:.1em;color:#70757e}
.sela-actual-preview h2{font-size:clamp(23px,3vw,31px);margin:0 0 14px;line-height:1.1;color:#1b1b1f}
.actual-meta{display:flex;align-items:center;justify-content:space-between;gap:8px;color:#71747b;font-size:11px;margin-bottom:15px}.actual-meta span:last-child{color:#0066cc;font-weight:730}
.actual-search{display:flex;gap:7px;margin-bottom:20px;align-items:center;color:#6c717a;font-size:11px}.actual-search>span:first-child{flex:1;min-width:0;padding:10px 12px;border-radius:14px;background:white;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.actual-toggle{padding:10px 9px;min-width:70px;text-align:center;border-radius:13px;background:#fff;font-size:14px;color:#0066cc}
.actual-book{display:flex;align-items:center;min-height:83px;padding:10px;gap:11px;border-radius:17px;background:white;box-shadow:0 9px 24px #254b6b15}
.actual-cover{display:flex;flex-direction:column;flex:none;align-items:center;justify-content:space-between;width:50px;height:65px;padding:5px 3px;border-radius:3px 6px 6px 3px;background:linear-gradient(145deg,#dfe4c5,#91a575);box-shadow:2px 3px 7px #0003;text-align:center;color:#243124;font-family:Georgia,serif}
.actual-cover b{font-size:7px;letter-spacing:.02em}.actual-cover small{font-size:5px}.actual-cover i{font-style:normal;font-size:22px}
.actual-detail{display:flex;flex:1;min-width:0;flex-direction:column;gap:10px}.actual-detail strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:14px}.actual-detail>span{display:flex;align-items:center;flex-wrap:wrap;gap:6px}
.actual-detail em,.actual-detail small{font-size:8px;font-style:normal;font-weight:720;border-radius:50px;padding:3px 6px}.actual-detail em{color:#0066a1;background:#e3f2ff}.actual-detail small{background:#f0f1f3}.actual-more{font-size:23px}
.actual-dock{display:flex;justify-content:space-around;align-items:center;min-height:54px;margin:0 11px 10px;padding:4px;border-radius:99px;background:#fffffff0;box-shadow:0 8px 26px #18395920}
.actual-dock span{flex:1;display:flex;flex-direction:column;gap:2px;align-items:center;font-size:18px;color:#74767c;line-height:1}.actual-dock small{font-size:8px;line-height:1.2}
.actual-dock .actual-active{color:#0066cc;background:#e4f1ff;padding:7px 0;border-radius:99px}
@media(max-width:400px){.actual-app-body{padding-top:16px}.actual-topbar{padding-inline:12px}.actual-round{width:27px;height:27px}.actual-search{margin-bottom:13px}.sela-actual-preview{min-height:335px}}
/* Reveal each meaningful public component once. Never animate the reading content. */
@media(prefers-reduced-motion:no-preference){
.hero>:first-child{animation:public-rise .65s cubic-bezier(.2,.8,.2,1) both}
.showcase{animation:public-show .8s cubic-bezier(.2,.8,.2,1) .12s both}
[data-sela-reveal]{transition:opacity .55s ease,transform .55s cubic-bezier(.18,.7,.15,1)}
[data-sela-reveal]:not(.sela-visible){opacity:0;transform:translateY(17px)}
[data-sela-reveal].sela-visible{opacity:1;transform:none}
.product-panel,.feature-item,.actual-book,.guide-card,.code-panel{transition:transform .2s ease,box-shadow .2s ease}
.product-panel:hover,.guide-card:hover,.code-panel:hover{transform:translateY(-3px);box-shadow:0 18px 50px #132e5120}
.actual-book:hover{transform:translateY(-2px)}
@keyframes public-rise{from{opacity:0;transform:translateY(15px)}to{opacity:1;transform:none}}
@keyframes public-show{from{opacity:0;transform:translateY(22px) rotate(-1deg) scale(.98)}to{opacity:1;transform:rotate(1deg)}}
}
@media(prefers-reduced-motion:reduce){[data-sela-reveal]{opacity:1!important;transform:none!important;transition:none!important}.hero>*,.showcase{animation:none!important}}
.cdn-release-choice{display:grid;gap:6px;margin:12px 0 14px;font-size:12px;font-weight:730;color:var(--p-muted)}
.cdn-release-choice select{width:100%;min-height:46px;padding:10px 14px;border:1px solid var(--p-line);border-radius:13px;background:var(--p-bg);color:var(--p-ink);font:inherit}