/* Aboard — the presentation (v8.7). Full-screen slides, scroll-snap + keyboard (aboard.js). Loads after fonts.css.
   v8.7 [owner 11-05]: the landing's language here too — 6 px frosted blocks, the landing's two skies, the blue capsule, the landing's footer. */
:root{--paper:#FAF9F1;--paper2:#F3EEE5;--ink:#10141B;--ink2:#353A43;--muted:#5B606A;--line:#E2DCD0;--aegean:#1F5FAF;--sun:#F6B800;
--deep:#0B2545;--copper:#B87333;--patina:#5BA8A0;--olive:#6E7F3A;--terra:#C4643A;--hf:'Poppins','Instrument Sans',sans-serif;
--mono:'JetBrains Mono',ui-monospace,monospace;--serif:'Instrument Serif',Georgia,serif}
html{scroll-snap-type:y mandatory;scroll-behavior:smooth}
body{margin:0;background:var(--paper)}
.ab{font-family:'Instrument Sans',system-ui,sans-serif;color:var(--ink);font-size:18px;line-height:1.5;-webkit-font-smoothing:antialiased}
.ab a{color:inherit}
.ab p,.ab h1,.ab h2,.ab h3,.ab ul,.ab ol{margin:0}
/* logo + crumbs (fixed) */
.ab-top{position:fixed;top:0;left:0;right:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 28px;pointer-events:none}
.ab-top > *{pointer-events:auto}
.bmark{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink)}
.bmark .mark{width:46px;height:auto}
.bmark .wm{width:210px;height:auto;display:block}
.cnl{overflow:visible}.cnl-iris{fill:#ffb700}.cnl-word{fill:var(--cnl-ink,#0b0b0c)}.cnl-dot{fill:#0b0b0c}.cnl-glint{fill:#fff}
.cnl-anim .cnl-pupil{transform-box:view-box;transform-origin:1031.11px -50px;animation:cnlLook 9s ease-in-out infinite,cnlBlink 5.2s infinite}
@keyframes cnlLook{0%,18%{translate:0 0}24%,38%{translate:13.56px -4.28px}46%,60%{translate:-12.85px 3.57px}68%,100%{translate:0 0}}
@keyframes cnlBlink{0%,93%,100%{scale:1 1}95.5%{scale:1 .06}}
.ab-crumb{display:inline-flex;align-items:center;height:34px;padding:0 14px;border:1px solid currentColor;border-radius:999px;font:500 11.5px/1 'Instrument Sans',sans-serif;letter-spacing:.07em;text-transform:uppercase;text-decoration:none;color:var(--ink);background:rgba(250,249,241,.7);backdrop-filter:blur(6px)}
.ab-crumb:hover{background:var(--ink);color:var(--paper)}
.is-dark .bmark{color:var(--paper);--cnl-ink:#FAF9F1}
.is-dark .ab-crumb{color:var(--paper);background:rgba(11,37,69,.5)}
.is-dark .ab-crumb:hover{background:var(--paper);color:var(--deep)}
.ab-top{transition:opacity .2s ease}
.ab-top.is-off{opacity:0;pointer-events:none}
/* slides */
.slide{position:relative;box-sizing:border-box;min-height:100vh;min-height:100dvh;scroll-snap-align:start;scroll-snap-stop:always;display:grid;align-content:center;padding:84px 6vw 96px;overflow:hidden;background:var(--paper)}
.slide.dark{background:var(--deep);color:#F4F1EA}
.slide.sky,.slide.sky-oly{background-color:#F2E8DD;background-image:url('img/bg.webp');background-size:cover;background-position:center 58%}
/* the landing's 'voices' sky (OUR FEATURES SPEAK FOR THEMSELVES.) — without the sound bars */
.slide.sky-voices{background-color:#F0E6DA;background-image:url('img/bg.webp');background-size:cover;background-position:center 86%}
.slide .in{position:relative;z-index:2;max-width:1120px;width:100%;margin:0 auto}
.k{font:500 12px/1.3 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.dark .k{color:#9FB6D6}
.k b{font-weight:700;color:var(--aegean)}.dark .k b{color:var(--sun)}
.t{margin-top:14px;font:500 clamp(30px,min(4.6vw,7.5vh),60px)/1.02 var(--hf);letter-spacing:-.035em;text-wrap:balance}
.t .serif{font-family:var(--serif);font-style:italic;font-weight:400;letter-spacing:0}
.dark .t .serif{color:#F6E7B8}
.lede{margin-top:16px;font-family:var(--serif);font-style:italic;font-size:clamp(19px,min(2vw,3vh),25px);line-height:1.32;max-width:36em;color:var(--ink2)}
.dark .lede{color:#D7E1EE}
.body{margin-top:14px;max-width:42em;font-size:clamp(15px,min(1.3vw,2.2vh),18px)}
.body + .body{margin-top:12px}
.slide .motto{display:inline-flex;flex-wrap:wrap;gap:10px 14px;margin-top:30px;padding:12px 18px;border:1px solid rgba(246,184,0,.5);border-radius:999px;font:600 13px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--sun)}
.slide .motto span+span::before{content:"·";margin-right:14px;color:rgba(246,184,0,.6)}
/* 1 · goal */
.goal-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:end}
.goal-side{border-left:2px solid rgba(246,184,0,.55);padding-left:22px}
.goal-side p{font-size:16px;line-height:1.55;color:#D7E1EE}
.goal-side p + p{margin-top:12px}
.goal-side .name{font:500 clamp(22px,2.4vw,30px)/1.1 var(--hf);letter-spacing:-.02em;color:#fff}
.goal-side .name small{display:block;margin-top:6px;font:400 15px/1.3 'Instrument Sans',sans-serif;color:#9FB6D6;letter-spacing:0}
/* 2 · problems: four pairs */
.pairs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 20px;margin-top:22px}
.pair{display:grid;grid-template-columns:30px minmax(0,1fr);gap:0 12px;padding:14px 18px 14px 14px;border:1px solid rgba(255,255,255,.75);border-radius:6px;background:rgba(250,249,241,.66);-webkit-backdrop-filter:blur(16px) saturate(1.1);backdrop-filter:blur(16px) saturate(1.1)}
.pair .n{grid-row:1/span 2;font:700 22px/1 var(--mono);color:var(--aegean)}
.pair .pr{font:600 16px/1.35 'Instrument Sans',sans-serif}
.pair .pr small{display:block;margin-top:2px;font:400 15px/1.45 'Instrument Sans',sans-serif;color:var(--muted)}
.pair .so{margin-top:8px;padding-top:8px;border-top:1px dashed var(--line);font-size:14.5px;line-height:1.4}
.pair .so b{font:600 11px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--olive);margin-right:8px}
/* 3 · thesis */
.formula{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:22px}
.term{position:relative;padding:16px 18px;border:1px solid rgba(159,182,214,.35);border-radius:6px;background:rgba(255,255,255,.04)}
.term .op{position:absolute;left:-13px;top:50%;transform:translateY(-50%);width:26px;height:26px;border-radius:50%;background:var(--sun);color:var(--deep);font:700 17px/26px var(--mono);text-align:center}
.term .lbl{font:500 11px/1.3 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:#9FB6D6}
.term .big{margin-top:8px;font:500 clamp(20px,2vw,26px)/1.15 var(--hf);letter-spacing:-.02em;color:#fff}
.term p{margin-top:6px;font-size:14.5px;line-height:1.4;color:#D7E1EE}
.term.sum{background:var(--sun);border-color:var(--sun);color:var(--deep)}
.term.sum .lbl,.term.sum p{color:var(--deep)}.term.sum .big{color:var(--deep)}
.ratio{display:flex;align-items:center;gap:22px;margin-top:18px;padding:14px 20px;border-radius:6px;background:rgba(255,255,255,.06)}
.ratio .r{font:700 clamp(26px,3vw,40px)/1 var(--mono);color:var(--sun);white-space:nowrap}
.ratio p{font-size:14.5px;line-height:1.4;color:#D7E1EE;max-width:44em}
/* 4 · solution */
.sol-grid{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:40px;align-items:center;margin-top:10px}
.tri{display:grid;gap:10px}
.tri .card{padding:13px 18px;border-radius:6px;border:1px solid rgba(255,255,255,.75);background:rgba(250,249,241,.66);-webkit-backdrop-filter:blur(16px) saturate(1.1);backdrop-filter:blur(16px) saturate(1.1)}
.tri .card .lbl{font:500 11px/1.3 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.tri .card .big{margin-top:4px;font:500 clamp(18px,min(1.8vw,3vh),24px)/1.12 var(--hf);letter-spacing:-.02em}
.tri .card p{margin-top:4px;font-size:14.5px;line-height:1.4;color:var(--ink2)}
.tri .card.hub{background:var(--deep);color:#F4F1EA;border-color:var(--deep)}
.tri .card.hub .lbl{color:#9FB6D6}.tri .card.hub p{color:#D7E1EE}
.three{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.three span{padding:9px 14px;border-radius:999px;border:1px solid var(--ink);font:600 12px/1 'Instrument Sans',sans-serif;letter-spacing:.08em;text-transform:uppercase}
/* 5 · equipment: the frame */
.frame-wrap{margin-top:18px;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:30px;align-items:center}
.frame{width:100%;max-height:46vh;height:auto;display:block;border-radius:6px;box-shadow:0 24px 50px -30px rgba(16,20,27,.45)}
.legend{display:grid;gap:10px}
.legend li{display:grid;grid-template-columns:26px minmax(0,1fr);gap:12px;align-items:start;font-size:14.5px;line-height:1.4;list-style:none}
.legend li i{display:block;width:26px;height:18px;border-radius:5px;margin-top:3px}
.legend b{display:block;font-weight:600}
/* 6 · founders */
.founders{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;margin-top:22px;padding:0}
.founders li{list-style:none;padding:14px 14px 16px;border:1px solid var(--line);border-radius:6px;background:#fff;font-size:14.5px;line-height:1.35}
.founders li b{display:block;font:700 22px/1 var(--mono);color:var(--aegean);margin-bottom:8px}
.ab-note{margin-top:22px;padding:16px 20px;border-radius:6px;background:var(--paper2);font-size:15px;line-height:1.5;max-width:52em}
.ab-note b{color:var(--aegean)}
/* 7 · register */
.seat{font:500 clamp(28px,4vw,54px)/1.08 var(--hf);letter-spacing:-.03em;max-width:16em;text-wrap:balance}
.seat .serif{font-family:var(--serif);font-style:italic;font-weight:400;letter-spacing:0}
.reg-row{display:flex;flex-wrap:wrap;align-items:center;gap:16px 22px;margin-top:30px}
.reg{position:relative;overflow:hidden;display:flex;width:fit-content;min-height:80px;align-items:center;gap:12px;max-width:100%;box-sizing:border-box;padding:8px 28px 8px 20px;border-radius:999px;text-decoration:none;background:var(--aegean);color:#FFFFFF;font:500 15px/1.3 'Instrument Sans',sans-serif;box-shadow:0 12px 26px -16px rgba(31,95,175,.9),inset 0 1px 0 rgba(255,255,255,.18)}
.ab a.reg{color:#FFFFFF}
.reg[aria-disabled="true"]{background:#5F84B5;cursor:not-allowed;box-shadow:none}
.reg .hp-k{display:block;flex:none;margin:0;padding:7px 11px 6px;border-radius:999px;background:rgba(255,255,255,.16);font:600 11px/1 'JetBrains Mono',monospace;letter-spacing:.12em}
.reg .hp-t{display:block;margin:0}
.reg .hp-t b{font-weight:700}
.interim{font-size:15px;color:var(--ink2);max-width:28em}
.interim a{font-weight:600;color:var(--aegean)}
.join-strip{margin-top:38px;padding:16px 22px;border-radius:6px;background:var(--ink);color:var(--sun);font:700 clamp(14px,1.6vw,20px)/1.2 var(--mono);letter-spacing:.1em;text-transform:uppercase;width:fit-content;max-width:100%;box-sizing:border-box}
.last-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.last-links a{display:inline-flex;align-items:center;height:38px;padding:0 16px;border:1px solid var(--ink);border-radius:999px;font:500 12px/1 'Instrument Sans',sans-serif;letter-spacing:.07em;text-transform:uppercase;text-decoration:none;background:rgba(250,249,241,.8)}
.last-links a:hover{background:var(--ink);color:var(--paper)}
/* deck controls (fixed, bottom) */
.ab-nav{position:fixed;left:0;right:0;bottom:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 24px 16px;background:linear-gradient(0deg,rgba(250,249,241,.92),rgba(250,249,241,0));pointer-events:none}
.ab-nav.is-dark{background:linear-gradient(0deg,rgba(11,37,69,.92),rgba(11,37,69,0))}
.ab-nav.is-dark .dots a{background:rgba(255,255,255,.22)}.ab-nav.is-dark .dots a[aria-current="true"]{background:var(--sun)}
.ab-nav.is-dark .ab-btn{border-color:#F4F1EA;background:transparent;color:#F4F1EA}.ab-nav.is-dark .ab-btn:hover{background:#F4F1EA;color:var(--deep)}
.ab-nav.is-dark .ab-count,.ab-nav.is-dark .ab-hint{color:#9FB6D6}
.ab-nav > *{pointer-events:auto}
.dots{display:flex;gap:8px;margin:0;padding:0;list-style:none}
.dots a{display:block;width:34px;height:8px;border-radius:999px;background:var(--line);text-indent:-9999px;overflow:hidden;transition:background .2s}
.dots a[aria-current="true"]{background:var(--aegean)}
.dots a:hover{background:var(--muted)}
.ab-btns{display:flex;align-items:center;gap:8px}
.ab-btn{width:42px;height:42px;border-radius:50%;border:1px solid var(--ink);background:var(--paper);color:var(--ink);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;padding:0}
.ab-btn svg{width:18px;height:18px}
.ab-btn:hover{background:var(--ink);color:var(--paper)}
.ab-btn:disabled{opacity:.35;cursor:default}
.ab-count{font:500 12px/1 var(--mono);letter-spacing:.12em;color:var(--muted);min-width:44px;text-align:center}
.ab-hint{font:500 11px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
/* the landing's footer — exact (site.css 'footer' + the final logo) */
.foot{background:var(--paper)}
.foot .wrap{padding-top:70px;padding-bottom:200px}
.foot-end{margin-top:40px;padding-top:22px;border-top:1px solid var(--ink)}
.wm-big{display:block;width:100%;height:auto;color:var(--ink)}
.motto{margin:0;max-width:36ch;font:italic 400 22px/1.3 'Instrument Serif',Georgia,serif}
.foot nav{display:flex;flex-wrap:wrap;gap:6px 22px;font-size:15px}
.foot nav a{text-decoration:none;padding:6px 0}
.foot .foot-grid{display:grid;grid-template-columns:minmax(0,1fr) repeat(3,minmax(0,168px));gap:28px 36px;margin-top:40px;padding-top:26px;border-top:1px solid var(--ink)}
.foot .foot-col{display:flex;flex-direction:column;flex-wrap:nowrap;gap:2px;font-size:14px}
.foot .foot-col h4{margin:0 0 14px;font:600 17px/1.2 'Instrument Sans',sans-serif;letter-spacing:.03em;text-transform:uppercase}
.foot .foot-col a{padding:4px 0;font:600 14px/1.3 'Instrument Sans',sans-serif;letter-spacing:.06em;text-transform:uppercase;text-decoration:none;color:var(--ink)}
.foot .foot-col a:hover{color:var(--aegean)}
.foot .foot-col a.foot-hot{color:#BF4E00}
.foot .foot-col a.foot-hot:hover{color:var(--aegean)}
.foot .foot-col small{margin-top:10px;font:500 11px/1.4 'JetBrains Mono',monospace;color:var(--muted)}
.foot-first{display:flex;flex-direction:column;gap:26px}
.news{display:flex;flex-direction:column;gap:8px;max-width:420px}
.news label{font:600 13.5px/1.3 'Instrument Sans',sans-serif;letter-spacing:.02em}
.news-row{display:flex;gap:8px}
.news-row input{flex:1;min-width:0;height:48px;padding:0 14px;box-sizing:border-box;border:1px solid #B9B3A7;border-radius:999px;background:#FFFFFF;font:400 16px 'Instrument Sans',sans-serif;color:var(--ink)}
.news-row input:focus{outline:2px solid var(--aegean);outline-offset:1px}
.foot .btn{display:inline-flex;align-items:center;gap:10px;height:48px;padding:0 20px;border-radius:999px;border:1px solid var(--ink);font:600 14px/1 'Instrument Sans',sans-serif;letter-spacing:.07em;text-transform:uppercase;text-decoration:none;white-space:nowrap;box-sizing:border-box;transition:transform .2s ease,background .2s ease;cursor:pointer}
.foot .btn-solid{background:var(--ink);color:#FAF9F1}
.foot .btn:hover{transform:translateY(-1px)}
.news small{font:500 11px/1.4 'JetBrains Mono',monospace;color:var(--muted)}
.foot .form-status{margin:0;min-height:1.3em;font:italic 400 17px/1.3 'Instrument Serif',Georgia,serif;color:var(--ink2)}
.foot .form-status:empty{min-height:0}
.legal-row{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px 24px;margin-top:0}
.legal{width:100%;margin:34px 0 0;font:500 11.5px/1.6 'JetBrains Mono',monospace;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.legal-row .legal{width:auto;margin:0}
.foot a.patreon{display:inline-flex;align-items:center;gap:7px;font:600 15px/1.2 'Instrument Sans',sans-serif;color:#BF4E00;text-decoration:none;border-bottom:1.5px solid currentColor;padding-bottom:2px}
.foot a.patreon:hover{color:var(--aegean)}
.patreon svg{width:16px;height:16px}
.foot .soc{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.foot .soc a{box-sizing:border-box;padding:0;display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid var(--ink);border-radius:999px;color:var(--ink);text-decoration:none;transition:background .2s ease,color .2s ease}
.foot .soc a:hover{background:var(--ink);color:#FAF9F1}
.soc svg{width:21px;height:21px}
.soc small{margin-left:4px;font:500 11px/1.4 'JetBrains Mono',monospace;color:var(--muted)}
.ab-end .foot{scroll-snap-align:end}
.foot .wrap{max-width:1240px;margin:0 auto;padding-left:40px;padding-right:40px;box-sizing:border-box}
@media (max-width:980px){.foot .foot-grid{grid-template-columns:1fr 1fr}.foot .foot-first{grid-column:1/-1}}
@media (max-width:560px){.foot .wrap{padding-left:20px;padding-right:20px}.news-row{flex-wrap:wrap}.news-row .btn{width:100%;justify-content:center}.reg{flex-wrap:wrap;border-radius:22px;padding:10px 16px 12px 10px;gap:8px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.cnl-anim .cnl-pupil{animation:none}}
@media (max-width:980px){
 .goal-grid,.sol-grid,.frame-wrap{grid-template-columns:1fr;gap:26px}
 .formula{grid-template-columns:1fr}.term .op{left:50%;top:-13px;transform:translateX(-50%)}
 .founders{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:700px){
 html{scroll-snap-type:none}
 .slide{min-height:0;padding:84px 18px 60px;align-content:start}
 .slide:last-child{padding-bottom:120px}
 .reg{height:auto;padding:14px 22px;flex-wrap:wrap;gap:10px}
 .ab-top{padding:10px 14px}.bmark .wm{display:none}.bmark .mark{width:38px}
 .pairs{grid-template-columns:1fr}
 .ab-hint{display:none}
 .dots a{width:18px}
 .ratio{flex-direction:column;align-items:flex-start;gap:10px}
 .founders{grid-template-columns:1fr}
}