/* Homepage only. Order: hero, why, see it work, the body + library, who, why I built it, questions, last button. */

/* hero: the copy, then the tracked squat under it on a phone (beside it on a wide screen) */
.hero{padding-block:22px 48px}
.hero-copy{display:grid;justify-items:center}
.hero .lede{margin:18px auto 24px}
.hero-stage{position:relative;margin-top:26px}
.hero-visual{max-width:460px;margin-inline:auto;width:100%}
.hero-stage::before{content:"";position:absolute;left:50%;top:54%;width:120%;aspect-ratio:1;transform:translate(-50%,-50%);border-radius:50%;z-index:-1;
  background:radial-gradient(closest-side,rgba(193,80,43,.16),transparent 70%)}
.stand-in-tag{position:absolute;top:-10px;left:50%;transform:translateX(-50%);white-space:nowrap;background:var(--bg);color:var(--accent-text);font:700 .62rem/1 var(--body);letter-spacing:.12em;text-transform:uppercase;padding:4px 8px;border-radius:999px;border:1px solid color-mix(in srgb,var(--accent) 55%,transparent);z-index:2}
h1.display{font-size:clamp(2.7rem,12.4vw,5rem)}
@media (min-width:900px){
  .hero{padding-block:48px 96px}
  .hero-copy{justify-items:start}
  .hero-stage{margin-top:0}
  h1.display{font-size:clamp(3rem,5.4vw,4.9rem)}
}

/* why: five numbered reasons */
.reasons{list-style:none;padding:0;display:grid;gap:12px}
.reasons li{display:grid;grid-template-columns:auto 1fr;gap:4px 16px;padding:20px 20px 20px 18px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius)}
.reasons .n{grid-row:span 2;font:400 2.2rem/1 var(--display);color:var(--accent);min-width:1.3ch;margin-top:-2px}
.reasons h3{font-size:1.18rem}
.reasons p{grid-column:2;color:var(--ink-soft)}
@media (min-width:900px){
  .reasons{grid-template-columns:repeat(6,1fr);gap:16px}
  .reasons li{grid-column:span 2;padding:28px 26px;grid-template-columns:1fr;align-content:start;gap:12px}
  .reasons li:nth-child(4){grid-column:2/span 2}
  .reasons li:nth-child(5){grid-column:4/span 2}
  .reasons .n{grid-row:auto;font-size:3rem}
  .reasons p{grid-column:1}
}
.versus-note{margin-top:22px;color:var(--muted-dark);font-size:.95rem;max-width:62ch}

/* see it work: the squat stays in place and builds while the page scrolls past it */
.scrolly-dots{display:none}
.scrolly-on{height:340vh}
.scrolly-title{font-size:clamp(1.6rem,6.2vw,2.8rem);line-height:1;grid-column:1/-1}
.scrolly-on .scrolly-pin{position:sticky;top:var(--head);height:calc(100dvh - var(--head));display:grid;grid-template-rows:auto auto 1fr;gap:14px;padding-block:12px 16px;align-content:start}
.scrolly-on .hero-visual{width:min(100%,calc((100dvh - var(--head) - 250px) * .8));max-width:none}
.scrolly-on .ah-toggle{display:none}
.scrolly-on .scrolly-text{position:relative;display:grid;align-content:start}
.scrolly-on .points{display:grid}
.scrolly-on .points li{grid-area:1/1;border:0;padding:6px 0 0;opacity:0;transform:translateY(10px);transition:opacity .25s,transform .25s;pointer-events:none;visibility:hidden}
.scrolly-on .points li.on{opacity:1;transform:none;pointer-events:auto;visibility:visible}
.scrolly-on .scrolly-dots{display:flex;gap:6px;margin-top:14px}
.scrolly-dots i{width:22px;height:4px;border-radius:2px;background:var(--faintest);transition:background .3s}
.scrolly-dots i.on{background:var(--accent)}
@media (min-width:900px){
  .scrolly-on .scrolly-pin{grid-template-rows:auto 1fr;grid-template-columns:auto 1fr;gap:24px 72px;align-items:center;align-content:center}
  .scrolly-on .hero-visual{width:min(460px,calc((100dvh - var(--head) - 190px) * .8))}
  .scrolly-on .points h3{font-size:1.6rem}
  .scrolly-on .points p{font-size:1.15rem}
  .scrolly-on .points .n{font-size:3rem}
}

/* the body + the library */
.small-head{margin-bottom:22px}
h3.display.h-mid{font-size:clamp(1.9rem,8vw,3rem)}
.library{margin-top:56px}
.strip{overflow:hidden;margin-inline:calc(var(--gutter) * -1);padding-block:6px 10px;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.strip-track{list-style:none;margin:0;padding:0 var(--gutter);display:flex;gap:12px;width:max-content;animation:strip 48s linear infinite}
.strip:hover .strip-track,.strip.paused .strip-track{animation-play-state:paused}
.strip-track li{display:grid;gap:4px;min-width:200px;padding:16px 18px;background:var(--card);border:1px solid var(--line);border-radius:16px}
.strip-track b{font-size:1rem}
.strip-track span{font-size:.8rem;color:var(--muted-dark)}
@keyframes strip{to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.strip{overflow-x:auto;mask-image:none;-webkit-mask-image:none}.strip-track{animation:none}}
.model{margin-top:56px}
.model-stage{position:relative;aspect-ratio:4/5;max-width:440px;width:100%;justify-self:center;border-radius:28px;display:grid;place-items:center;
  background:radial-gradient(90% 60% at 46% 34%,color-mix(in srgb,var(--card) 70%,#fff 30%) 0%,transparent 70%),linear-gradient(180deg,var(--card),var(--card-tint));border:1px solid var(--line)}
.model-ring{width:46%;aspect-ratio:1;border-radius:50%;border:2px dashed var(--faint);
  background:radial-gradient(closest-side,var(--glow),transparent 72%)}
.model-stage p{position:absolute;left:18px;right:18px;bottom:16px;display:grid;gap:2px;font-size:.88rem;color:var(--ink-soft)}
.model-stage p b{font-size:1rem;color:var(--ink)}
@media (min-width:900px){.library{margin-top:80px}.model{margin-top:80px}}

/* who it's for */
.people{list-style:none;padding:0;display:grid}
.people li{padding:18px 0;border-top:1px solid var(--line);font-size:1.15rem;line-height:1.4;color:var(--ink-soft)}
.people li:last-child{border-bottom:1px solid var(--line)}
.people b{color:var(--ink)}
@media (min-width:900px){.people li{font-size:1.4rem;padding:24px 0}}

/* placeholders: anything marked .dummy is a stand-in and must be replaced or removed before the site goes live */
.dummy{position:relative;outline:2px dashed color-mix(in srgb,var(--accent) 55%,transparent);outline-offset:3px}
.dummy::after{content:attr(data-dummy);position:absolute;top:-11px;right:12px;background:var(--bg);color:var(--accent-text);font:700 .62rem/1 var(--body);letter-spacing:.12em;text-transform:uppercase;padding:4px 8px;border-radius:999px;border:1px solid color-mix(in srgb,var(--accent) 55%,transparent);z-index:2}
.dummy-text{font-style:italic;color:var(--muted-dark)}

/* why I built it */
.video{position:relative;aspect-ratio:4/5;border-radius:var(--radius);background:linear-gradient(160deg,var(--card-tint),var(--equip-tint));display:grid;place-items:center;max-width:440px;width:100%;justify-self:center}
.video .play{width:72px;height:72px;border-radius:50%;border:0;background:var(--btn);display:grid;place-items:center;box-shadow:0 14px 30px -10px var(--glow)}
.video .play svg{width:28px;height:28px;fill:var(--on-accent)}
.video > div{position:absolute;left:18px;right:18px;bottom:16px;display:grid;gap:2px;font-size:.88rem;color:var(--ink-soft)}
.video > div b{font-size:1rem;color:var(--ink)}
.sign{font-weight:700;color:var(--ink)}
#fred h2.display{font-size:clamp(2rem,8.4vw,3.2rem)}
#fred .split{gap:28px}

/* last button */
.final .cta-note a{color:var(--on-accent)}

/* hero headline: "Meet Arc." big in terracotta, the line under it smaller in ink */
h1.hero-h em{font-size:1.25em;margin-bottom:.12em}
h1.hero-h span{display:block;font-size:.62em;line-height:1}

/* section sub-line: the smaller line under a section's name */
.sub{font:800 1.25rem/1.25 var(--body);color:var(--ink)}
.sub em{font-style:normal;color:var(--accent)}
@media (min-width:900px){.sub{font-size:1.6rem}}

/* hero: two phones, cause then result */
.duo{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:8px;max-width:560px;margin-inline:auto}
.ph{margin:0;display:grid;gap:10px;min-width:0}
.ph-screen{border-radius:26px;border:6px solid var(--dark);background:var(--card);overflow:hidden;aspect-ratio:9/18.2;display:grid;grid-template-rows:auto 1fr;
  box-shadow:0 34px 60px -34px rgba(35,29,22,.55),0 12px 22px -16px rgba(35,29,22,.3)}
.ph-bar{display:flex;justify-content:space-between;align-items:baseline;gap:6px;padding:16px 10px 8px;font-size:.62rem;color:var(--muted-dark);border-bottom:1px solid var(--line)}
.ph-bar b{font:400 .95rem/1 var(--display);text-transform:uppercase;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ph figcaption{font:700 .68rem/1.25 var(--body);letter-spacing:.1em;text-transform:uppercase;color:var(--muted-dark);text-align:center}
.ph-a .hero-visual{align-self:center;max-width:none}
.ph-a .arc-hero{border-radius:0;border:0;box-shadow:none}
.ph-a .ah-toggle{display:none}
.ph-b{transform:translateY(14px)}
.duo-arrow{width:30px;height:30px;border-radius:50%;background:var(--btn);color:var(--on-accent);display:grid;place-items:center;box-shadow:0 8px 18px -8px var(--glow)}
.duo-arrow svg{width:15px;height:15px}
.sp{padding:10px 9px;display:grid;gap:7px;align-content:start;text-align:left}
.sp-arc{display:grid;grid-template-columns:auto 1fr;gap:7px;font-size:.66rem;line-height:1.35;color:var(--ink-soft);background:var(--equip-tint);border-radius:10px;padding:8px}
.sp-arc i{width:14px;height:14px;border-radius:50%;margin-top:1px;background:radial-gradient(circle at 35% 30%,#F0A078,var(--accent));box-shadow:0 0 0 2.5px var(--card),0 0 0 4px var(--accent)}
.sp-h{font:700 .54rem/1 var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--accent-text);margin-top:4px}
.sp-card{display:grid;gap:2px;border:1px solid var(--line);border-radius:10px;padding:7px 8px;background:var(--bg)}
.sp-card b{font-size:.68rem}
.sp-move{font:400 .92rem/1.1 var(--display);color:var(--ink)}
.sp-move em{font-style:normal;color:var(--accent)}
.sp-card small{font-size:.56rem;line-height:1.3;color:var(--muted-dark)}
.hero-stage{margin-top:34px}
@media (min-width:900px){
  .hero-stage{margin-top:0}
  .duo{gap:16px;max-width:none}
  .ph-screen{border-width:8px;border-radius:34px}
  .ph-bar{font-size:.72rem;padding:20px 14px 10px}.ph-bar b{font-size:1.15rem}
  .sp{padding:14px 12px;gap:9px}.sp-arc{font-size:.78rem}.sp-card b{font-size:.8rem}.sp-move{font-size:1.15rem}.sp-card small{font-size:.66rem}.sp-h{font-size:.62rem}
  .duo-arrow{width:40px;height:40px}.duo-arrow svg{width:18px;height:18px}
}
.ph-bar span{white-space:nowrap}
.stand-in-tag{top:-22px}

/* the library: follows the body. A drifting strip until an area is picked, then that area's exercises. */
.library{margin-top:28px}
.lib-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;min-height:44px}
.lib-title{font:400 1.7rem/1 var(--display)}
.lib-all{font:700 .82rem/1 var(--body);color:var(--accent-text);background:none;border:1px solid var(--faintest);border-radius:999px;padding:0 14px;min-height:40px;cursor:pointer}
.lib-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:8px}
.lib-list li{display:grid;gap:3px;padding:12px 14px;background:var(--card);border:1px solid var(--line);border-radius:14px;animation:lib-in .3s both}
.lib-list b{font-size:.92rem;line-height:1.25}
.lib-list span,.strip-track span{font-size:.76rem;color:var(--muted-dark)}
.lib-note{margin-top:14px;color:var(--muted-dark);font-size:.95rem}
[hidden]{display:none!important}
@keyframes lib-in{from{opacity:0;transform:translateY(6px)}}
@media (min-width:900px){.lib-list{grid-template-columns:repeat(4,1fr);gap:12px}.lib-title{font-size:2.2rem}.library{margin-top:40px}}

/* hero on a phone: text left, the button centred under it, the two phones overlapping */
.hero{text-align:left}
.hero .lede{margin:16px 0 24px}
.hero-copy{justify-items:stretch}
.hero-actions{justify-content:center;width:100%}
.hero-copy .cta-note{text-align:center;width:100%}
.duo{display:block;position:relative;max-width:420px;height:min(112vw,480px);margin:6px auto 0}
.ph{position:absolute;width:57%}
.ph-a{left:0;top:0;transform:rotate(-3.5deg);z-index:1}
.ph-b{right:0;top:44px;transform:rotate(3deg);z-index:2}
.ph figcaption{position:absolute;left:0;right:0;bottom:-24px}
.chip{position:absolute;z-index:3;background:var(--card);border:1px solid var(--line);border-radius:999px;padding:7px 12px;font:800 .72rem/1 var(--body);color:var(--accent-text);box-shadow:0 10px 22px -10px rgba(35,29,22,.4);white-space:nowrap}
.chip-a{left:-4px;bottom:64px}
.chip-b{right:-4px;top:-14px}
@media (min-width:900px){
  .duo{height:560px;max-width:600px}
  .ph{width:50%}
  .ph-b{top:70px}
  .ph figcaption{bottom:-30px}
  .chip{font-size:.85rem;padding:9px 15px}
}
/* the chips do the captioning on the overlapping phones; keep them inside the screen */
.ph figcaption{display:none}
.chip-b{right:8px;top:-16px}
.chip-a{left:6px}
.duo{margin-bottom:12px}

/* hero sub-headline: two lines, "The coach that optimises your plan" / "after every session." */
h1.hero-h span{font-size:clamp(1.45rem,6.55vw,2.6rem);white-space:nowrap;line-height:1.02}
@media (min-width:900px){h1.hero-h span{font-size:clamp(1.8rem,3.1vw,2.7rem)}}

/* a real iPhone: titanium edge, black bezel, Dynamic Island, side buttons */
.ph-screen{border:0;border-radius:34px;position:relative;
  box-shadow:0 0 0 1.5px #6b655d,0 0 0 3.5px #2a2622,0 0 0 9px #0c0a08,0 0 0 10.5px #4a443d,0 38px 60px -30px rgba(35,29,22,.6),0 14px 24px -16px rgba(35,29,22,.35)}
.ph-screen::before{content:"";position:absolute;z-index:4;top:9px;left:50%;width:30%;height:17px;margin-left:-15%;border-radius:999px;background:#050403}
.ph-screen::after{content:"";position:absolute;z-index:4;left:50%;bottom:6px;width:34%;height:4px;margin-left:-17%;border-radius:4px;background:rgba(35,29,22,.55)}
.ph::before,.ph::after{content:"";position:absolute;z-index:0;width:3px;border-radius:2px;background:#4a443d}
.ph::before{left:-13px;top:19%;height:7%;box-shadow:0 38px 0 #4a443d,0 70px 0 #4a443d}
.ph::after{right:-13px;top:27%;height:13%}
.ph-bar{padding-top:34px}
.ph{margin:0}
@media (min-width:900px){.ph-screen{border-radius:40px}.ph-screen::before{height:21px;top:11px}.ph-bar{padding-top:42px}}

/* the App Store button draws the eye: a soft pulse, and a lift on hover */
.store{position:relative;transition:transform .2s ease,box-shadow .2s ease}
.store:hover,.store:focus-visible{transform:translateY(-3px) scale(1.03);box-shadow:0 16px 28px -14px rgba(35,29,22,.6)}
.hero .store::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;animation:store-pulse 2.8s ease-out infinite}
@keyframes store-pulse{0%{box-shadow:0 0 0 0 rgba(193,80,43,.55)}65%,100%{box-shadow:0 0 0 16px rgba(193,80,43,0)}}
@media (prefers-reduced-motion:reduce){.hero .store::after{animation:none}.store:hover{transform:none}}

/* Why ArcForm: title in terracotta */
#why h2.display{color:var(--accent)}

/* scroll reveals: titles slide in from the left, points fade up. Content is visible without script; the script only adds .rv-on. */
.rv-on .rv-title,.rv-on .rv-sub{opacity:0;transform:translateX(-44px);transition:opacity .6s ease,transform .6s cubic-bezier(.22,1,.36,1)}
.rv-on .rv-sub{transition-delay:.12s}
.rv-on .rv-up{opacity:0;transform:translateY(22px);transition:opacity .55s ease,transform .55s cubic-bezier(.22,1,.36,1);transition-delay:calc(var(--i,0) * 90ms)}
.rv-on .rv-title.in,.rv-on .rv-sub.in,.rv-on .rv-up.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv-on .rv-title,.rv-on .rv-sub,.rv-on .rv-up{opacity:1;transform:none;transition:none}}
/* margins: the sub-headline stays inside the screen, the phones keep their bezels inside it */
h1.hero-h span{font-size:clamp(1.35rem,6.05vw,2.6rem)}
@media (min-width:900px){h1.hero-h span{font-size:clamp(1.8rem,3.1vw,2.7rem)}}
.duo{padding-inline:12px}
.ph{width:55%}
.ph-a{left:12px}
.ph-b{right:12px}
@media (min-width:900px){.ph{width:48%}.ph-a{left:0}.ph-b{right:0}}
.hero{overflow-x:clip}

/* hero text a step smaller */
h1.display.hero-h{font-size:clamp(2.3rem,10.2vw,4.1rem)}
h1.hero-h span{font-size:clamp(1.2rem,5.1vw,2.2rem)}
.hero .lede{font-size:1rem;line-height:1.55}
@media (min-width:900px){
  h1.display.hero-h{font-size:clamp(2.8rem,4.6vw,4.2rem)}
  h1.hero-h span{font-size:clamp(1.6rem,2.7vw,2.4rem)}
  .hero .lede{font-size:1.05rem}
}

/* App Store button: a drop shadow and a small bob, no ring */
.hero .store::after{display:none}
.hero .store,.cta-band .store,.final .store{box-shadow:0 14px 24px -10px rgba(35,29,22,.55),0 3px 6px rgba(35,29,22,.25);animation:store-bob 2.6s ease-in-out infinite}
.hero .store:hover,.hero .store:focus-visible,.cta-band .store:hover,.final .store:hover{animation:none}
@keyframes store-bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-4px)}}
@media (prefers-reduced-motion:reduce){.hero .store,.cta-band .store,.final .store{animation:none}}

/* How it works: title in terracotta, small lines under section titles all in ink */
#tracking h2.display{color:var(--accent)}
.sub em{color:var(--ink)}

/* hero visual, Cal AI style: two small phones side by side, the right one a little higher, a drawn arrow between ("this turns into this") */
.duo{display:grid;grid-template-columns:1fr 38px 1fr;align-items:end;gap:0;position:relative;height:auto;max-width:340px;margin:8px auto 8px;padding-inline:14px}
.ph{position:relative;width:auto;left:auto;right:auto;top:auto;transform:none}
.ph-a{z-index:1}
.ph-b{transform:translateY(-26px);z-index:1}
.duo-arrow{display:block;width:38px;height:auto;align-self:center;margin-bottom:34px;color:var(--ink-soft);z-index:2;box-shadow:none;background:none;border-radius:0}
.chip{font-size:.6rem;padding:5px 9px}
.chip-a{left:-8px;bottom:42px}
.chip-b{right:-6px;top:30px}
.ph-screen{aspect-ratio:9/19}
.ph-b .sp-card:nth-of-type(3){display:none}
@media (min-width:900px){
  .duo{max-width:520px;grid-template-columns:1fr 64px 1fr}
  .duo-arrow{width:64px;margin-bottom:60px}
  .ph-b{transform:translateY(-44px)}
  .chip{font-size:.8rem;padding:8px 13px}
  .ph-b .sp-card:nth-of-type(3){display:grid}
}
/* small-phone fit: room for the arrow, tighter corners, chips off the titles */
.duo{grid-template-columns:1fr 54px 1fr;padding-inline:22px;max-width:360px}
.ph-screen{border-radius:26px}
.ph-screen::before{height:14px;top:8px}
.ph-bar{padding-top:28px}
.duo-arrow{width:54px;margin-bottom:46px}
.chip-b{top:-18px;right:0}
.chip-a{left:-4px}
@media (min-width:900px){.duo{grid-template-columns:1fr 72px 1fr}.ph-screen{border-radius:38px}.duo-arrow{width:72px}.chip-b{top:-20px}}
/* the squat fills its phone; the stand-in tag sits under the pair */
.hero-stage .stand-in-tag{top:auto;bottom:-16px}

/* the library: body, the weekly line, then one exercise step by step */
.weekly{display:flex;align-items:center;gap:12px;margin-top:26px;font:700 1.05rem/1.3 var(--body);color:var(--ink)}
.new-tag{flex:none;background:var(--btn);color:var(--on-accent);font:800 .66rem/1 var(--body);letter-spacing:.12em;text-transform:uppercase;padding:6px 10px;border-radius:999px}
.xmodel{margin-top:44px}
.x-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.x-chips button{font:700 .84rem/1 var(--body);color:var(--ink-soft);background:var(--card);border:1px solid var(--line);border-radius:999px;padding:0 15px;min-height:42px;cursor:pointer}
.x-chips button[aria-selected="true"]{background:var(--btn);color:var(--on-accent);border-color:var(--btn)}
.x-steps ol{list-style:none;counter-reset:s;padding:0;margin:12px 0 0;display:grid;gap:10px}
.x-steps li{counter-increment:s;display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;padding:14px 16px;background:var(--card);border:1px solid var(--line);border-radius:14px;font-size:1.02rem;line-height:1.4}
.x-steps li::before{content:counter(s);font:400 1.6rem/1 var(--display);color:var(--accent)}
.x-feel{margin-top:14px;color:var(--muted-dark);font-size:.95rem}
.x-card{gap:26px;align-items:center}
.x-card .model-stage{max-width:380px}
@media (min-width:900px){.xmodel{margin-top:72px}}

/* Fred, 8 Oct: no area picker on the page. The body stays (drag to turn) until the scroll story replaces it. */
#body-picker .abp-side{display:none}
#body-picker .abp-hint-txt{font-size:0}
#body-picker .abp-hint-txt::after{content:"Drag to turn";font-size:.8rem}

/* ===== Exercise library: the scroll story ===== */
#body h2.display{color:var(--accent)}
.story-sec{padding-bottom:0}
.story-head{padding-block:4px 10px}
.story-head h2{font-size:clamp(1.6rem,6.2vw,2.6rem);line-height:1}
.story-grid{display:grid;gap:14px;grid-template-rows:minmax(0,1fr) auto;flex:1;min-height:0}
.story-stage{position:relative;border-radius:28px;overflow:hidden;isolation:isolate;border:1px solid var(--line);min-height:260px;
  background:radial-gradient(ellipse 70% 62% at 50% 44%,var(--card) 0%,var(--card-tint) 100%);box-shadow:0 30px 60px -36px rgba(35,29,22,.35)}
.story-poster{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;opacity:1;transition:opacity .4s}
.story-layer{position:absolute;inset:0;width:100%;height:100%;border:0;background:transparent}
#story-body{transition:opacity .5s ease}
#story-body.abp,#story-body .abp{display:block;height:100%}
#story-body .abp-stage{width:100%;height:100%;aspect-ratio:auto;border:0;border-radius:0;box-shadow:none;background:none}
#story-body .abp-stage::after,#story-body .abp-hint,#story-body .abp-out,#story-body .abp-tip,#story-body .abp-poster{display:none}
#story-mannequin{opacity:0;pointer-events:none;transition:opacity .6s ease}
.story-panel{position:relative}
.beat{display:grid;gap:8px;align-content:start}
.beat-t{font:400 clamp(1.7rem,7vw,2.6rem)/.98 var(--display);color:var(--ink)}
.beat-p{color:var(--ink-soft);max-width:44ch}
.weekly{display:flex;align-items:center;gap:10px;font:700 .95rem/1.3 var(--body);color:var(--ink)}
.new-tag{flex:none;background:var(--btn);color:var(--on-accent);font:800 .64rem/1 var(--body);letter-spacing:.12em;text-transform:uppercase;padding:6px 10px;border-radius:999px}
.lib-window{height:min(18dvh,140px);overflow:hidden;border-radius:14px;
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 16%,#000 84%,transparent);mask-image:linear-gradient(180deg,transparent,#000 16%,#000 84%,transparent)}
.lib-col{list-style:none;margin:0;padding:0;display:grid;gap:8px;will-change:transform}
.lib-col li{display:flex;justify-content:space-between;gap:12px;padding:10px 14px;background:var(--card);border:1px solid var(--line);border-radius:12px;font-weight:700;font-size:.95rem}
.lib-col span{color:var(--muted-dark);font-weight:500;font-size:.8rem;white-space:nowrap}
.x-steps{list-style:none;counter-reset:s;padding:0;margin:4px 0 0;display:grid;gap:8px}
.x-steps li{counter-increment:s;display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start;padding:10px 14px;background:var(--card);border:1px solid var(--line);border-radius:12px;font-size:.98rem;line-height:1.35;opacity:.45;transition:opacity .3s,border-color .3s}
.x-steps li::before{content:counter(s);font:400 1.4rem/1 var(--display);color:var(--accent)}
.x-steps li.on{opacity:1;border-color:color-mix(in srgb,var(--accent) 45%,var(--line))}
.x-feel{color:var(--muted-dark);font-size:.9rem;min-height:2.6em}

/* the pinned version (script adds .story-on); without it everything is a plain stack and the page reads the same */
.story:not(.story-on) .story-pin{padding-block:8px 24px}
.story:not(.story-on) .story-grid{height:auto;grid-template-rows:none}
.story:not(.story-on) .story-stage{aspect-ratio:4/5;max-height:70dvh}
.story:not(.story-on) .story-panel{display:grid;gap:30px}
.story:not(.story-on) #story-mannequin,.story:not(.story-on) #story-body{display:none}
.story:not(.story-on) .lib-window{height:auto;max-height:200px;overflow:auto}
.story-on{height:380vh}
.story-on .story-pin{display:flex;flex-direction:column;position:sticky;top:var(--head);height:calc(100dvh - var(--head));padding-block:10px 14px}
.story-on .story-poster{opacity:1}
.story-on.live .story-poster{opacity:0}
.story-on .story-panel{min-height:min(40dvh,330px)}
.story-on .beat{position:absolute;left:0;right:0;top:0;opacity:0;transform:translateY(12px);transition:opacity .35s,transform .35s;pointer-events:none;visibility:hidden}
.story-on .beat.on{opacity:1;transform:none;pointer-events:auto;visibility:visible}
.story-on.dim #story-body{opacity:0}
.story-on.mannequin #story-mannequin{opacity:1}
.story-grid{justify-items:center}
.story-stage{width:min(100%,420px);justify-self:center;height:100%}
.story-panel{width:100%;text-align:center}
.story-on .story-panel{min-height:min(36dvh,300px)}
.beat{justify-items:center}
.story-on .beat .x-steps{text-align:left}
.story-on #story-mannequin{transition:opacity .5s ease .4s}
.story-on #story-body{transition:opacity .4s ease}
.story-sec{padding-top:0}
#tracking{padding-bottom:0}
@media (min-width:900px){
  .story-stage{width:min(100%,520px);max-height:calc(100dvh - var(--head) - 340px)}
  .story-on .story-panel{min-height:230px}
  .beat-t{font-size:clamp(1.8rem,2.8vw,2.6rem)}
  .lib-window{height:min(20dvh,150px);width:min(100%,420px)}
  .story-on .beat .x-steps{grid-template-columns:1fr 1fr}
  .story-head h2{font-size:clamp(2rem,3.2vw,3rem);white-space:nowrap}
}
#story-body .abp-side{display:none!important}

/* ===== smaller type from "Why ArcForm" down (Fred, 16 Oct) ===== */
main section:not(.hero) h2.display,.scrolly-title,.story-head h2,#fred h2.display,.final h2.display{font-size:clamp(1.7rem,6.6vw,2.4rem);line-height:1}
@media (min-width:900px){main section:not(.hero) h2.display,.scrolly-title,.story-head h2,#fred h2.display,.final h2.display{font-size:clamp(2rem,3vw,2.8rem)}
  .scrolly-on .points h3{font-size:1.3rem}.scrolly-on .points p{font-size:1rem}.scrolly-on .points .n{font-size:2.3rem}
  .beat-t{font-size:clamp(1.5rem,2.2vw,2rem)}}
.reasons h3{font-size:1.1rem}
/* library: the two lines sit left, the second arrives when the muscle starts; "new exercises" sits centred under them */
.story-lines{display:grid;gap:2px;text-align:left;justify-items:start;width:100%}
.story-lines .beat-t{opacity:0;transform:translateY(8px);transition:opacity .4s,transform .4s}
.story-lines .beat-t.show{opacity:1;transform:none}
.story-on .story-lines{transition:opacity .3s}
.story-on .story-lines:not(.on){opacity:0;pointer-events:none}
.story-on .beat[data-beat="0"]{justify-items:center}
@media (min-width:900px){.story-on .story-panel{min-height:260px}.story-stage{max-height:calc(100dvh - var(--head) - 360px)}}
.story:not(.story-on) .story-lines .beat-t{opacity:1;transform:none}

/* 16 Oct: tracking section starts higher, no slow-motion badge */
#tracking{padding-top:0}
.scrolly-title{margin-top:-8px}
#tracked-squat .ah-speed{display:none!important}
/* the 3D steps roll through one at a time: in from the right, out to the left */
.x-name{font:800 1.05rem/1.2 var(--body);color:var(--ink)}
.story-on .x-steps{position:relative;display:block;width:min(100%,520px);height:76px;overflow:hidden;margin-top:6px}
.story-on .x-steps li{position:absolute;inset:0 0 auto 0;opacity:0;transform:translateX(110%);transition:transform .5s cubic-bezier(.22,1,.36,1),opacity .4s;text-align:left}
.story-on .x-steps li.on{opacity:1;transform:none;border-color:color-mix(in srgb,var(--accent) 45%,var(--line))}
.story-on .x-steps li.past{opacity:0;transform:translateX(-110%)}
.x-feel{display:flex;align-items:flex-start;justify-content:center;gap:10px;text-align:left;color:var(--accent);font-weight:600;font-size:.92rem;line-height:1.35;min-height:2.6em;max-width:520px}
.x-feel b{flex:none;background:var(--accent);color:var(--on-accent);font:800 .62rem/1 var(--body);letter-spacing:.12em;text-transform:uppercase;padding:6px 10px;border-radius:999px;margin-top:1px}
@media (min-width:900px){.story-on .beat .x-steps{grid-template-columns:none}}

.dash{display:block;width:44px;height:4px;border-radius:2px;background:var(--accent);margin:2px auto}
.beat-big{font:400 clamp(1.7rem,6vw,2.4rem)/1 var(--display);color:var(--ink)}
@media (min-width:900px){.beat-big{font-size:clamp(2rem,3vw,2.8rem)}}
.x-name{margin-top:10px;padding-top:10px;border-top:1px solid var(--line);width:min(100%,520px);font:800 .78rem/1 var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--muted-dark)}

/* 16 Oct, later: the story's lines are small and equal; who-it's-for gets icons */
.beat-t{font-size:clamp(1.15rem,4.4vw,1.45rem)}
@media (min-width:900px){.beat-t{font-size:1.5rem}}
.who-h{color:var(--accent)}
.people li{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:center;padding:16px 0;font-size:1rem}
.people li p{color:var(--ink-soft);font-size:1rem;line-height:1.35;margin-top:2px}
.people li b{font-size:1.15rem}
.pi{width:46px;height:46px;border-radius:14px;background:var(--card);border:1px solid var(--line);display:grid;place-items:center;color:var(--accent)}
.pi svg{width:26px;height:26px}
@media (min-width:900px){.people li{grid-template-columns:auto 1fr;gap:22px;font-size:1.1rem}.people li b{font-size:1.3rem}.people li p{font-size:1.1rem}.pi{width:56px;height:56px}}

.cta-band{padding-block:8px 0}
.cta-band .hero-actions{display:flex;justify-content:center}

#faq h2.display{color:var(--accent)}
.final .store{box-shadow:0 14px 24px -10px rgba(0,0,0,.35)}

/* 22 Oct (Fred): headings centred, so the hero copy is centred too. */
.hero,.hero-copy{text-align:center}
.hero-copy{display:grid;justify-items:center}
.hero-copy .lede{margin-inline:auto}
.hero .hero-actions{justify-content:center}
.scrolly-title,.story-head{text-align:center}
.story-head h2{margin-inline:auto}

/* 22 Oct (Fred): the hero phones drawn like the preview's iPhone 17: even black edge, Dynamic Island, 9:41 status bar, upright. */
.ph-a,.ph-b{transform:none}
.ph::before,.ph::after{display:none}
.ph-screen{aspect-ratio:402/874;border:7px solid #1d1d1d;border-radius:38px;background:var(--bg);grid-template-rows:auto auto 1fr;
  box-shadow:0 12px 40px rgba(0,0,0,.22)}
.ph-screen::after{display:none}
.ph-screen::before{top:7px;width:34%;height:15px;margin-left:-17%;background:#000}
.ph-status{display:flex;justify-content:space-between;align-items:center;padding:7px 14px 0;height:30px;font:600 .62rem/1 -apple-system,system-ui,sans-serif;color:#111}
.ph-status .ic{display:flex;gap:2px;align-items:center}
.ph-status .ic i{display:block;width:8px;height:5px;background:#111;border-radius:1px}
.ph-status .ic i:last-child{width:12px;height:6px;border-radius:2px}
.ph-bar{padding-top:8px}
@media (min-width:900px){.ph-screen{border-width:9px;border-radius:46px}.ph-screen::before{height:19px;top:8px}.ph-status{height:38px;font-size:.75rem;padding-inline:20px}.ph-bar{padding-top:8px}}
.ph-screen::before{width:28%;margin-left:-14%}
.ph-status{padding:7px 12px 0;font-size:.56rem}
.ph-status .ic i{width:6px;height:4px}.ph-status .ic i:last-child{width:10px;height:5px}
@media (min-width:900px){.ph-status{font-size:.75rem;padding-inline:20px}.ph-status .ic i{width:9px;height:6px}.ph-status .ic i:last-child{width:14px;height:7px}}

.ph-screen::before{width:22%;margin-left:-11%}

/* ===== 23 Oct (Fred): Ask Arc, one pinned scroll after the exercise library (assets/js/askplan.js) =====
   The box types, sends, and grows into the app's Home plan card (HomePlanCard.swift), which builds piece by piece.
   Without script or with reduced motion it is a plain section: heading, the box, heading, the finished card. */
.askplan{padding-block:24px 8px;overflow-x:clip}
.ap-pin{display:flex;flex-direction:column;align-items:center}
.ap-head,.ap-stage{display:contents}
.ap-h{padding-inline:var(--gutter)}
.ap-h1{order:1}.ap-chat{order:2}.ap-h2{order:3;margin-top:56px}.ap-card{order:4}
.ap-rows,.ap-shell{display:none}
/* the drifting sport cards */
.ap-rows{gap:12px}
.ask-row{overflow:hidden}
.ask-row ul{list-style:none;margin:0;padding:0;display:flex;gap:12px;width:max-content;animation:ask-drift 60s linear infinite}
.ask-row.rev ul{animation-direction:reverse;animation-duration:70s}
@keyframes ask-drift{to{transform:translateX(-50%)}}
.plan-chip{width:220px;flex:none;display:grid;gap:10px;align-content:start;min-height:112px;padding:14px 16px;background:var(--card);border:1px solid var(--line);border-radius:16px;opacity:.75}
.plan-chip b{font:800 .7rem/1 var(--body);letter-spacing:.16em;text-transform:uppercase;color:var(--accent-text);display:flex;align-items:center;gap:8px}
.plan-chip b::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--accent)}
.plan-chip span{font-size:.95rem;line-height:1.35;color:var(--ink-soft)}
/* the box */
.ap-chat,.ap-card,.ap-shell{width:min(calc(100% - 2 * var(--gutter)),380px)}
.ap-chat{margin-top:24px}
.ask-box{position:relative;z-index:2;display:flex;align-items:center;gap:12px;height:60px;padding:8px 10px 8px 14px;border-radius:999px;background:var(--bg);
  border:1.5px solid var(--faintest);text-decoration:none;color:var(--ink);font-size:1.05rem;transition:border-color .3s;
  box-shadow:0 18px 40px -16px rgba(35,29,22,.35),0 0 0 10px color-mix(in srgb,var(--bg) 70%,transparent)}
.ask-box svg{width:30px;height:30px;flex:none}
.ask-box .ap-type{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;text-align:left}
.ap-type.ph{color:var(--muted-dark)}
.ap-type.caret::after{content:"";display:inline-block;width:2px;height:1.1em;margin-left:2px;vertical-align:-.18em;background:var(--accent);animation:ap-blink 1s steps(1) infinite}
@keyframes ap-blink{50%{opacity:0}}
.ask-box i{position:relative;flex:none;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:var(--btn);color:var(--on-accent);font-style:normal;font-weight:700;transition:transform .2s,background .2s}
.ask-box i::before,.ask-box i::after{content:"";position:absolute;inset:0;border-radius:50%;border:2px solid var(--accent);opacity:0;pointer-events:none}
.ask-box:hover{border-color:var(--accent)}
/* the plan card, as on the app's Home screen */
.ap-card{position:relative;margin-top:20px;background:var(--card);border:1px solid var(--line);border-radius:20px;overflow:hidden;text-align:left;
  box-shadow:0 14px 34px -6px rgba(35,29,22,.12)}
.pc-pic{position:relative;aspect-ratio:1.6;overflow:hidden;background:radial-gradient(circle 300px at 38% 28%,#FBF7EF,#E2D8C6)}
.pc-img{position:absolute;left:0;top:-20%;width:120%;height:120%;max-width:none;object-fit:cover}
.pc-pic::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:101px;background:linear-gradient(180deg,color-mix(in srgb,var(--card) 0%,transparent),var(--card) 86%);pointer-events:none}
.pc-names{position:absolute;left:17px;right:17px;bottom:6px;z-index:1;display:grid;gap:4px}
.pc-goal{font:500 15px/1.2 var(--body);color:var(--accent-text)}
.pc-name{font:400 36px/1 var(--display);color:var(--ink);padding-bottom:2px}
.pc-low{padding:12px 18px 18px}
.pc-sess{display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.pc-sess b{font:800 16px/1.2 var(--body);color:var(--ink)}
.pc-sess span{font:600 12px/1.2 var(--body);color:var(--muted)}
.pc-seg{display:flex;gap:3px;height:6px;margin-top:12px}
.pc-seg i{flex:1;border-radius:3px;background:var(--card-tint)}
.pc-seg i:first-child{background:color-mix(in srgb,var(--accent) 35%,var(--card))}
.pc-today{margin-top:14px;font:500 13px/1.3 var(--body);color:var(--muted)}
.pc-ex{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:8px}
.pc-ex li{display:flex;align-items:center;gap:10px;font:600 13.5px/1.3 var(--body);color:var(--ink-soft)}
.pc-ex span{flex:none;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:var(--equip-tint);font:800 11px/1 var(--body);color:var(--accent-text)}
@media (min-width:900px){.askplan{padding-block:48px 16px}.plan-chip{width:250px}}

/* --- the pinned version (script adds .ap-on) --- */
.ap-on{height:480vh}
.ap-on .ap-pin{position:sticky;top:var(--head);height:calc(100vh - var(--head));height:calc(100svh - var(--head));display:grid;grid-template-rows:auto minmax(0,1fr);overflow:hidden;align-items:stretch}
.ap-on .ap-head{display:grid;padding-top:14px}
.ap-on .ap-h{grid-area:1/1;margin:0;transition:opacity .5s,transform .6s cubic-bezier(.22,1,.36,1),filter .5s}
.ap-on .ap-h2{opacity:0;transform:translateY(14px);filter:blur(6px)}
.ap-on.s-plan .ap-h1{opacity:0;transform:translateY(-14px);filter:blur(6px)}
.ap-on.s-plan .ap-h2{opacity:1;transform:none;filter:none}
.ap-on .ap-stage{display:block;position:relative}
.ap-on .ap-rows{display:grid;position:absolute;left:0;right:0;top:50%;transform:translateY(-50%);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 14%,#000 86%,transparent),linear-gradient(180deg,transparent,#000 12%,#000 88%,transparent);-webkit-mask-composite:source-in;
          mask-image:linear-gradient(90deg,transparent,#000 14%,#000 86%,transparent),linear-gradient(180deg,transparent,#000 12%,#000 88%,transparent);mask-composite:intersect;
  transition:opacity .8s ease,filter .8s ease,transform .9s cubic-bezier(.22,1,.36,1),visibility 0s}
.ap-on.s-back .ap-rows{opacity:0;filter:blur(10px);transform:translateY(-50%) scale(.94);visibility:hidden;transition:opacity .8s ease,filter .8s ease,transform .9s cubic-bezier(.22,1,.36,1),visibility 0s .9s}
.ap-on .ap-chat,.ap-on .ap-card,.ap-on .ap-shell{position:absolute;left:50%;top:50%;margin:0;transform:translate(-50%,-50%)}
.ap-on .ap-chat{z-index:3;transition:opacity .25s}
.ap-on.s-morph .ap-chat{opacity:0;pointer-events:none}
.ap-on .ap-shell{display:block;z-index:1;height:60px;border-radius:30px;background:var(--card);border:1px solid var(--line);box-shadow:0 14px 34px -6px rgba(35,29,22,.12);opacity:0;will-change:height}
.ap-on.s-morph .ap-shell{opacity:1}
.ap-on .ap-card{z-index:2;background:none;border-color:transparent;box-shadow:none;visibility:hidden}
.ap-on.s-card .ap-card{visibility:visible}
.ap-on .pc-pic{background:none}
.ap-on .pc-pic::before{content:"";position:absolute;inset:0;background:radial-gradient(circle 300px at 38% 28%,#FBF7EF,#E2D8C6);opacity:0;transition:opacity .5s}
.ap-on.s-card .pc-pic::before{opacity:1}
.ap-on .pc-pic::after{opacity:0;transition:opacity .5s}
.ap-on.s-card .pc-pic::after{opacity:1}
.ap-on .ap-in{opacity:0;transform:translateY(10px);transition:opacity .45s,transform .55s cubic-bezier(.22,1,.36,1)}
.ap-on .pc-img.ap-in{transform:scale(1.08);transform-origin:60% 40%;transition:opacity .7s,transform 1.1s cubic-bezier(.22,1,.36,1)}
.ap-on .ap-in.in{opacity:1;transform:none}
.ap-on .pc-seg i{opacity:0;transform:scaleY(.2);transition:opacity .25s,transform .3s}
.ap-on .pc-seg i.on{opacity:1;transform:none}
/* sent: the arrow presses and a soft ring spreads out from it */
.ap-on.s-sent .ask-box i{background:var(--accent);transform:scale(.9)}
.ap-on.s-sent .ask-box{border-color:color-mix(in srgb,var(--accent) 55%,var(--faintest))}
.ap-on.s-sent .ask-box i::before{animation:ap-ripple .9s cubic-bezier(.2,.7,.3,1) forwards}
.ap-on.s-sent .ask-box i::after{animation:ap-ripple .9s cubic-bezier(.2,.7,.3,1) .16s forwards}
@keyframes ap-ripple{0%{opacity:.6;transform:scale(1)}100%{opacity:0;transform:scale(3.2)}}
.ap-on.s-hold .ask-row ul{animation-play-state:paused}
@media (max-height:700px){.ap-on .pc-pic{aspect-ratio:1.9}.ap-on .pc-name{font-size:30px}.ap-on .pc-ex{gap:5px;margin-top:8px}.ap-on .pc-today{margin-top:10px}}

/* 23 Oct (Fred): one phone in the hero, drawn like a real iPhone 17 Pro: thin black bezel, titanium edge,
   proportional Dynamic Island, side buttons. Proportions from the 402x874 screen. */
.iphone{position:relative;width:min(64vw,250px);aspect-ratio:402/874;margin:8px auto 0;padding:2.6%;border-radius:15.5%/7.2%;background:#0b0b0c;
  box-shadow:0 0 0 1.5px #a59f97,0 0 0 2.5px #5c5751,0 40px 70px -30px rgba(35,29,22,.55),0 16px 30px -18px rgba(35,29,22,.35)}
.iphone::before,.iphone::after{content:"";position:absolute;width:3px;border-radius:2px;background:#7d7770}
.iphone::before{left:-4px;top:20%;height:9%;box-shadow:0 calc(var(--w,250px) * .2) 0 #7d7770}
.iphone::after{right:-4px;top:25%;height:14%}
.iphone-screen{position:relative;height:100%;border-radius:13%/6%;overflow:hidden;background:var(--bg);display:grid;grid-template-rows:auto auto 1fr}
.ip-island{position:absolute;left:50%;top:2.4%;width:31%;height:4.4%;transform:translateX(-50%);border-radius:999px;background:#000;z-index:3}
.ip-status{display:flex;justify-content:space-between;align-items:center;height:2.6em;padding:0 9% 0 11%;font:600 .62rem/1 -apple-system,system-ui,sans-serif;color:#111}
.ip-status .ic{display:flex;gap:2px;align-items:center}
.ip-status .ic i{display:block;width:7px;height:5px;background:#111;border-radius:1px}
.ip-status .ic i:last-child{width:12px;height:6px;border-radius:2px}
.ip-bar{display:flex;justify-content:space-between;align-items:baseline;padding:8px 12px 8px;border-bottom:1px solid var(--line);font-size:.7rem;color:var(--muted-dark)}
.ip-bar b{font:400 1.15rem/1 var(--display);color:var(--ink)}
.iphone .hero-visual{min-height:0;max-width:none}
.iphone .arc-hero{border-radius:0;border:0;box-shadow:none;height:100%}
.iphone .ah-toggle{display:none}
.ip-chip{position:absolute;z-index:4;left:-14%;bottom:22%}
@media (min-width:900px){.iphone{width:300px}.ip-status{font-size:.75rem}.ip-bar{font-size:.8rem;padding:10px 16px}.ip-bar b{font-size:1.35rem}.ip-chip{left:-22%}}

/* 23 Oct: Want to be in a video? */
.video-ask .vid-lede{margin:0 auto;text-align:center}
.vid-form{max-width:520px;margin:22px auto 0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}

/* 23 Oct (Fred): the hero fills the first screen on its own, centred; Why ArcForm only comes on when you scroll. */
.hero{min-height:calc(100svh - var(--head));display:grid;align-content:center;padding-block:24px}
.beta-pop .vid-form{background:none;border:0;padding:0;margin-top:4px}