/* Decades of IRC — scroll scenes */

/* hero: pinned stage driven by scroll progress (--p) */
.hx-pin{position:relative;height:4600px}
.hx-stage{position:sticky;top:0;height:min(100vh,860px);height:min(100svh,860px);display:grid;place-items:center;overflow:clip;text-align:center}
.hx-stage>*{grid-area:1/1}
.hx-bg{position:absolute;inset:0;background:radial-gradient(60% 55% at 50% 35%,var(--tx-teal-tint) 0%,#fff 70%)}
.hx-orb{position:absolute;border-radius:50%;background:radial-gradient(circle at 30% 30%,rgba(0,150,136,.28),rgba(0,150,136,0) 70%)}
.hx-orb.a{width:520px;height:520px;left:-120px;top:12%;transform:translateY(calc(var(--p,0)*-260px)) scale(calc(1 + var(--p,0)*.5))}
.hx-orb.b{width:420px;height:420px;right:-80px;top:38%;transform:translateY(calc(var(--p,0)*-420px)) scale(calc(1 + var(--p,0)*.8))}
.hx-orb.c{width:260px;height:260px;left:58%;top:6%;transform:translateY(calc(var(--p,0)*-120px))}
.hx-hero-in{position:relative;padding:0 1.25rem}
.hx-title{font-size:clamp(3.4rem,13vw,10.5rem);font-size:clamp(3rem,min(13vw,22vh),10.5rem);font-size:clamp(3rem,min(13vw,22svh),10.5rem);font-weight:800;letter-spacing:-.055em;line-height:.9;margin:0}
.tx-js .hx-title{transform:scale(calc(1 + var(--p,0)*.6)) translateY(calc(var(--p,0)*-50px));opacity:calc(1.9 - var(--p,0)*2.2)}
.hx-hero-top{margin-bottom:1.6rem}
.hx-hero-top img{border-radius:20px;box-shadow:0 20px 40px -18px rgba(0,80,72,.5)}
.tx-js .hx-hero-top{opacity:calc(1.5 - var(--p,0)*3)}
.hx-sub{display:none;max-width:46rem;padding:0 1.25rem;position:relative}
.tx-js .hx-sub{display:block;opacity:calc((var(--p,0) - .42)*4);transform:translateY(calc((1 - var(--p,0))*60px))}
.hx-sub h2{font-size:clamp(2rem,5vw,3.75rem);font-weight:700;letter-spacing:-.04em;line-height:1.05;margin:0 0 1.2rem}
.hx-cue{margin-top:1.6rem;text-align:center;color:var(--tx-mute);font-size:.8125rem;letter-spacing:.14em;text-transform:uppercase}
.hx-cue:after{content:"";display:block;width:1px;height:34px;margin:.6rem auto 0;background:linear-gradient(var(--tx-teal),rgba(0,150,136,0))}
.tx-js .hx-cue{opacity:calc(1 - var(--p,0)*8)}
/* intro: words light up as you scroll */
.hx-scrub{position:relative;height:3800px}
.hx-big{font-size:clamp(2.6rem,8vw,6.5rem);font-weight:800;letter-spacing:-.05em;line-height:1;margin:0 auto;max-width:62rem}
.tx-js .hx-w{opacity:.12;transition:opacity .35s ease}
.tx-js .hx-w.on{opacity:1}
.hx-after{max-width:44rem;margin-top:2.2rem}
.tx-js .hx-after{opacity:calc((var(--p,0) - .6)*5);transform:translateY(calc((1 - var(--p,0))*30px))}
.hx-after p{color:var(--tx-mute);font-size:clamp(1.05rem,1.7vw,1.35rem);line-height:1.5;margin:0 0 1rem}
/* eras */
.hx-era{position:relative;text-align:center;padding:clamp(8rem,16vw,13rem) 0 4rem;overflow:clip}
.hx-era:before{content:"";position:absolute;left:50%;top:0;width:900px;height:900px;margin-left:-450px;border-radius:50%;background:radial-gradient(circle,rgba(0,150,136,.11),rgba(0,150,136,0) 65%);transform:translateY(calc(var(--v,0)*-160px))}
.hx-era>*{position:relative}
.hx-range{font-size:clamp(3rem,10vw,8rem);font-weight:800;letter-spacing:-.055em;line-height:.95;margin:.4rem 0 1rem}
.hx-era h2{font-size:clamp(1.6rem,3.4vw,2.5rem);font-weight:700;letter-spacing:-.03em;margin:0}
.hx-era p.blurb{color:var(--tx-mute);font-size:1.25rem;max-width:34rem;margin:1rem auto 0}
/* event chapters */
.hx-event{position:relative;min-height:600px;display:flex;align-items:center;padding:2rem 0}
.hx-year{position:absolute;left:0;top:50%;margin-top:-.42em;font-size:clamp(6.5rem,19vw,15.5rem);font-weight:800;letter-spacing:-.065em;line-height:.85;color:transparent;background:linear-gradient(180deg,rgba(0,150,136,.34) 0%,rgba(0,150,136,.04) 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;user-select:none;pointer-events:none}
.hx-event.r .hx-year{left:auto;right:0}
.hx-card{position:relative;max-width:520px;margin-left:auto;background:rgba(255,255,255,.82);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-radius:28px;padding:clamp(1.6rem,3vw,2.4rem);box-shadow:0 0 0 1px rgba(0,150,136,.14),0 30px 60px -28px rgba(0,80,72,.35)}
.hx-event.r .hx-card{margin-left:0;margin-right:auto}
.hx-card h3{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;letter-spacing:-.03em;line-height:1.1;margin:.5rem 0 .8rem}
.hx-card p{color:#424245;font-size:1.0625rem;line-height:1.6;margin:0}
@media(max-width:767.98px){.hx-event{min-height:520px}.hx-year{top:.5rem;margin-top:0;font-size:6.5rem}.hx-card{max-width:none;margin:5rem 0 0!important}}
.hx-stats{padding:clamp(5rem,9vw,8rem) 0}
.hx-end{position:relative;overflow:clip}
.hx-end .tx-window{max-width:900px;margin:4rem auto 0}
.hx-end .tx-window-body{height:340px}
.hx-glass{background:rgba(255,255,255,.12);border-radius:28px;padding:2rem;height:100%}
.hx-glass h3{color:#fff;font-size:1.5rem;font-weight:650;letter-spacing:-.025em;margin:0 0 .6rem}
.hx-glass p{color:rgba(255,255,255,.9);margin:0}
.tx-static .hx-pin,.tx-static .hx-scrub{height:auto}
.tx-static .hx-stage{position:relative;height:auto;padding:6rem 0}
.tx-static .hx-sub{display:block}

/* cinematic year scenes: each event pins, the year swells in, the card follows */
.hx-event{display:block;height:1500px;min-height:0;padding:0}
.hx-event .hx-stage{overflow:visible}
.hx-event .hx-stage .hx-year{position:relative;left:auto;right:auto;top:auto;margin:0;font-size:clamp(7.5rem,26vw,24rem);letter-spacing:-.07em;line-height:.8;white-space:nowrap;background:linear-gradient(180deg,rgba(0,150,136,.55) 0%,rgba(0,102,95,.07) 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.hx-event .hx-stage .hx-card{justify-self:end;margin:0;position:relative;z-index:1}
.hx-event.r .hx-stage .hx-card{justify-self:start}
.tx-js .hx-event .hx-year{transform:translateY(calc((.5 - var(--p,0))*140px)) scale(calc(.72 + var(--p,0)*.55));opacity:calc(min(1,var(--p,0)*6) * (1 - max(0,var(--p,0) - .4)*1.3))}
.tx-js .hx-event .hx-card{opacity:calc((var(--p,0) - .26)*5);transform:translateY(calc((.62 - var(--p,0))*150px))}
.tx-static .hx-event{height:auto}
.tx-static .hx-event .hx-stage{height:auto;padding:4rem 0}
@media(max-width:767.98px){.hx-event{height:1400px}.hx-event .hx-stage .hx-year{font-size:clamp(6.5rem,40vw,11rem);align-self:start;margin-top:12vh}.hx-event .hx-stage .hx-card{justify-self:stretch;align-self:end;margin:0 0 6vh!important;max-width:none}}
@media(max-width:991.98px){.hx-era,.hx-event .hx-stage>.container,.hx-stats .container{padding-left:1.5rem;padding-right:1.5rem}.hx-stage .container{padding-left:1.5rem;padding-right:1.5rem}}

/* shorter scroll: two years share one pinned scene */
.hx-pin{height:2500px}
.hx-scrub{height:2000px}
.hx-era{padding:clamp(5rem,10vw,8rem) 0 2.5rem}
.hx-event.hx-pair{height:1450px}
.hx-event.hx-solo{height:1000px}
.hx-pair .hx-stage{display:flex;flex-direction:column;justify-content:center;align-items:stretch;gap:clamp(.6rem,3.5vh,2.4rem);padding:0 clamp(1.5rem,5vw,4rem);text-align:left}
.hx-pair .hx-ev{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,520px);align-items:center;gap:clamp(1rem,3vw,3rem);width:100%;max-width:1200px;margin:0 auto}
.hx-pair .hx-ev.r{grid-template-columns:minmax(0,520px) minmax(0,1fr)}
.hx-pair .hx-ev .hx-year{grid-area:1/1;font-size:clamp(5rem,15vw,12rem);line-height:.85;margin:0;transform:none;text-align:left}
.hx-pair .hx-ev.r .hx-year{grid-area:1/2;text-align:right}
.hx-pair .hx-ev .hx-card{grid-area:1/2;justify-self:stretch;max-width:none;margin:0;padding:clamp(1.1rem,2vw,1.7rem)}
.hx-pair .hx-ev.r .hx-card{grid-area:1/1;justify-self:stretch}
.hx-pair .hx-ev .hx-card h3{font-size:clamp(1.25rem,2vw,1.7rem);margin:.35rem 0 .5rem}
.hx-pair .hx-ev .hx-card p{font-size:1rem;line-height:1.5}
/* years rise in from the bottom of the screen: the first is visible while the scene scrolls in, the second climbs up from below */
.tx-js .hx-pair .hx-ev-a{opacity:calc(var(--v,0)*7);transform:none}
.tx-js .hx-pair .hx-ev-b{opacity:1;transform:translateY(calc(max(0,(1 - var(--p,0)*1.3))*62vh))}
.tx-js .hx-pair.hx-solo .hx-ev-a{opacity:calc(var(--v,0)*7)}
.tx-js .hx-pair .hx-ev .hx-year{opacity:1;transform:none}
.tx-js .hx-pair .hx-ev .hx-card{opacity:1;transform:none}
@media(max-width:767.98px){
.hx-event.hx-pair{height:1340px}
.hx-event.hx-solo{height:950px}
.hx-pair .hx-stage{padding:0 1.25rem;gap:.8rem}
.hx-pair .hx-ev,.hx-pair .hx-ev.r{grid-template-columns:minmax(0,1fr);gap:.3rem}
.hx-pair .hx-ev .hx-year,.hx-pair .hx-ev.r .hx-year{grid-area:1/1;font-size:clamp(3.2rem,15vw,4.6rem);text-align:left;align-self:auto;margin:0}
.hx-pair .hx-ev .hx-card,.hx-pair .hx-ev.r .hx-card{grid-area:2/1;padding:1rem 1.1rem;margin:0!important}
.hx-pair .hx-ev .hx-card h3{font-size:1.15rem}
.hx-pair .hx-ev .hx-card p{font-size:.92rem;line-height:1.45}
}
.tx-static .hx-event.hx-pair,.tx-static .hx-event.hx-solo{height:auto}
.hx-pair .hx-ev .hx-year{padding:0 .09em 0 .02em;font-size:clamp(5rem,13vw,10.5rem)}
@media(max-width:767.98px) and (max-height:700px){
.hx-pair .hx-ev .hx-year,.hx-pair .hx-ev.r .hx-year{font-size:2.8rem}
.hx-pair .hx-ev .hx-card p{font-size:.86rem;line-height:1.4}
.hx-pair .hx-ev .hx-card{padding:.8rem .95rem!important}
.hx-pair .hx-stage{gap:.5rem}
}

/* ---- Apple-style scenes: one sticky stage per scene, both years identical in size, GPU-only motion ---- */
.hx-era{padding-left:1.5rem;padding-right:1.5rem}
.hx-event.hx-pair{height:calc(100vh + 640px);height:calc(100svh + 640px)}
.hx-event.hx-solo{height:calc(100vh + 220px);height:calc(100svh + 220px)}
.hx-event.hx-pair .hx-stage{height:100vh;height:100svh;min-height:560px;overflow:clip;contain:layout paint}
.hx-pair .hx-ev .hx-year,.hx-pair .hx-ev.r .hx-year{font-size:clamp(4.6rem,12vw,10rem);line-height:.9;padding:0 .09em;transform:none!important;scale:1;opacity:1}
.tx-js .hx-pair .hx-ev{will-change:transform,opacity;backface-visibility:hidden}
.tx-js .hx-pair .hx-ev-a{opacity:1;transform:translate3d(0,0,0)}
.tx-js .hx-pair .hx-ev-b{opacity:calc(var(--e,0)*3);transform:translate3d(0,calc((1 - var(--e,0))*68vh),0)}
.tx-js .hx-pair.hx-solo .hx-ev-a{opacity:1}
.hx-card{-webkit-backdrop-filter:none;backdrop-filter:none;background:#fff}
.hx-glass{-webkit-backdrop-filter:none;backdrop-filter:none}
.tx-js .hx-w{transition:opacity .25s linear}
.tx-js .hx-title,.tx-js .hx-sub,.tx-js .hx-orb,.tx-js .hx-hero-top{will-change:transform,opacity}
@media(max-width:767.98px){
.hx-event.hx-pair{height:calc(100vh + 520px);height:calc(100svh + 520px)}
.hx-event.hx-solo{height:calc(100vh + 200px);height:calc(100svh + 200px)}
.hx-pair .hx-ev .hx-year,.hx-pair .hx-ev.r .hx-year{font-size:clamp(3.4rem,16vw,4.8rem)}
}
@media(max-width:767.98px) and (max-height:700px){
.hx-pair .hx-ev .hx-year,.hx-pair .hx-ev.r .hx-year{font-size:2.9rem}
}
.tx-static .hx-event.hx-pair,.tx-static .hx-event.hx-solo{height:auto}
.tx-static .hx-event.hx-pair .hx-stage{height:auto;min-height:0;overflow:visible}
/* years: solid teal, no fade-out gradient */
.hx-event .hx-stage .hx-year,.hx-pair .hx-ev .hx-year{background:linear-gradient(180deg,#00a597 0%,#00796e 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;opacity:1}