/* Layout: Apple product page — gallery + buy box, exploded-layer story on black, specs, FAQ, related rail */
:root{
  --bg:#fbfbfd; --bg2:#f5f5f7; --fg:#1d1d1f; --fg2:#6e6e73; --line:#d2d2d7;
  --accent:#8f6430; --ok:#1f7a3a; --btn:#1d1d1f; --btnfg:#ffffff; --nav:rgba(251,251,253,.74); --scrim:rgba(0,0,0,.32);
  --stage:#000000; --stagefg:#f5f5f7; --stagefg2:#a1a1a6; --stageaccent:#d9ad6f;
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","Onest","Helvetica Neue",Arial,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#000000; --bg2:#161617; --fg:#f5f5f7; --fg2:#a1a1a6; --line:#424245;
  --accent:#d9ad6f; --ok:#4cc472; --btn:#f5f5f7; --btnfg:#1d1d1f; --nav:rgba(22,22,23,.74); --scrim:rgba(0,0,0,.6); color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#000000; --bg2:#161617; --fg:#f5f5f7; --fg2:#a1a1a6; --line:#424245;
  --accent:#d9ad6f; --ok:#4cc472; --btn:#f5f5f7; --btnfg:#1d1d1f; --nav:rgba(22,22,23,.74); --scrim:rgba(0,0,0,.6); color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font);font-size:17px;line-height:1.47;letter-spacing:-.01em;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
[hidden]{display:none!important}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
h1,h2,h3{text-wrap:balance;margin:0;letter-spacing:-.03em}
.wrap{max-width:1180px;margin:0 auto;padding-inline:22px}

.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:var(--nav);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid color-mix(in srgb,var(--line) 60%,transparent)}
.nav-in{max-width:1024px;margin:0 auto;padding-inline:22px;height:48px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{font-weight:600;letter-spacing:.32em;font-size:15px;color:var(--fg)}
.logo:hover{text-decoration:none}
.links{display:flex;gap:32px;font-size:13px}
.links a{color:var(--fg);opacity:.82}
.icon-btn{width:44px;height:44px;display:grid;place-items:center;background:none;border:0;color:var(--fg);cursor:pointer;position:relative}
.badge{position:absolute;top:8px;right:6px;min-width:16px;height:16px;padding:0 4px;border-radius:8px;background:var(--fg);color:var(--bg);font-size:10px;font-weight:600;display:grid;place-items:center;transform:scale(0);transition:transform .35s var(--ease)}
.badge.on{transform:scale(1)}
.badge.pop{animation:pop .45s var(--ease)}
@keyframes pop{40%{transform:scale(1.35)}100%{transform:scale(1)}}

/* sticky buy bar */
.buybar{position:fixed;left:0;right:0;top:calc(48px + env(safe-area-inset-top,0px));z-index:40;background:var(--nav);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid color-mix(in srgb,var(--line) 60%,transparent);transform:translateY(-110%);transition:transform .5s var(--ease)}
.buybar.on{transform:none}
.buybar .in{max-width:1024px;margin:0 auto;padding-inline:22px;height:52px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.buybar b{font-size:17px;font-weight:600;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.buybar .r{display:flex;align-items:center;gap:16px;font-variant-numeric:tabular-nums;flex-shrink:0}

.crumbs{font-size:13px;color:var(--fg2);padding-block:20px 0}
.crumbs a{color:var(--fg2)}

/* hero product */
.pdp{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;padding-block:24px 0;align-items:start}
.gallery{position:sticky;top:72px}
.stagebox{position:relative;aspect-ratio:1/1;border-radius:28px;overflow:hidden;background:var(--bg2)}
.stagebox img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transform:scale(1.04);transition:opacity .8s var(--ease),transform 1.4s var(--ease)}
.stagebox img.on{opacity:1;transform:none}
.thumbs{display:flex;gap:12px;margin-top:16px}
.thumbs button{width:76px;height:76px;padding:0;border-radius:14px;overflow:hidden;border:2px solid transparent;background:var(--bg2);cursor:pointer;transition:border-color .3s}
.thumbs button[aria-current="true"]{border-color:var(--fg)}
.thumbs img{width:100%;height:100%;object-fit:cover}
.navarrow{position:absolute;top:50%;width:44px;height:44px;margin-top:-22px;border-radius:50%;border:0;background:rgba(255,255,255,.82);color:#1d1d1f;font-size:22px;cursor:pointer;opacity:0;transition:opacity .3s}
.stagebox:hover .navarrow,.navarrow:focus-visible{opacity:1}
.navarrow.prev{left:16px}.navarrow.next{right:16px}

.buy .tag{font-size:14px;font-weight:600;color:var(--accent)}
.buy h1{font-size:clamp(32px,4vw,44px);font-weight:700;line-height:1.08;margin-top:6px}
.buy .sub{color:var(--fg2);margin-top:8px}
.price{display:flex;align-items:baseline;gap:12px;margin-top:24px;font-variant-numeric:tabular-nums}
.price b{font-size:32px;font-weight:600;letter-spacing:-.02em}
.price span{color:var(--fg2);font-size:15px}
.stock{display:flex;align-items:center;gap:8px;margin-top:10px;font-size:15px;color:var(--ok)}
.stock i{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 0 var(--ok);animation:pulse 2.4s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--ok) 50%,transparent)}70%{box-shadow:0 0 0 8px transparent}100%{box-shadow:0 0 0 0 transparent}}
.box{background:var(--bg2);border-radius:20px;padding:22px;margin-top:28px}
.box h3{font-size:17px;font-weight:600}
.dims{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:14px}
.dims label{display:block;font-size:13px;color:var(--fg2);margin-bottom:6px}
.step{display:flex;align-items:center;background:var(--bg);border:1px solid var(--line);border-radius:12px;height:48px}
.step button{width:44px;height:100%;border:0;background:none;color:var(--fg);font-size:20px;cursor:pointer}
.step input{flex:1;min-width:0;width:100%;border:0;background:none;text-align:center;font:inherit;font-weight:600;color:var(--fg);font-variant-numeric:tabular-nums;-moz-appearance:textfield}
.step input::-webkit-inner-spin-button{-webkit-appearance:none}
.calcout{display:flex;justify-content:space-between;align-items:baseline;margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-variant-numeric:tabular-nums}
.calcout span{color:var(--fg2);font-size:15px}
.calcout b{font-size:21px;font-weight:600}
.qtyrow{display:flex;gap:12px;margin-top:20px;align-items:stretch}
.qtyrow .step{width:132px;flex-shrink:0;height:52px}
.pill{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 22px;border-radius:980px;background:var(--btn);color:var(--btnfg);font:inherit;font-size:17px;font-weight:500;border:0;cursor:pointer;transition:transform .2s var(--ease),opacity .2s}
.pill:hover{text-decoration:none;opacity:.88}
.pill:active{transform:scale(.97)}
.pill.big{flex:1;min-height:52px}
.pill.ghost{background:transparent;color:var(--fg);border:1px solid var(--line)}
.pill.sm{min-height:36px;padding:0 16px;font-size:14px}
.oneclick{width:100%;margin-top:12px}
.perks{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:14px;font-size:15px}
.perks li{display:flex;gap:12px;align-items:flex-start}
.perks svg{flex-shrink:0;color:var(--accent);margin-top:2px}
.perks small{display:block;color:var(--fg2);font-size:13px}

/* layers story */
.layers{margin-top:140px;background:var(--stage);color:var(--stagefg);padding-block:140px}
.layers .h2{color:var(--stagefg)}
.h2{font-size:clamp(36px,5.6vw,64px);font-weight:700;line-height:1.05}
.lede{font-size:clamp(19px,2.2vw,24px);color:var(--fg2);line-height:1.38;max-width:640px;margin:20px auto 0;font-weight:500}
.layers .lede{color:var(--stagefg2)}
.center{text-align:center}
.lgrid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center;margin-top:80px}
.stack{position:relative;height:440px;perspective:1400px}
.sheet{position:absolute;left:50%;top:50%;width:min(380px,78vw);aspect-ratio:1.6/1;margin-left:calc(min(380px,78vw) / -2);margin-top:-118px;border-radius:14px;transform:rotateX(58deg) rotateZ(-38deg) translateZ(0);transition:transform 1.4s var(--ease);box-shadow:0 30px 60px -30px rgba(0,0,0,.9)}
.sheet.s1{background:linear-gradient(135deg,rgba(255,255,255,.35),rgba(255,255,255,.08));border:1px solid rgba(255,255,255,.5)}
.sheet.s2{background:#cfcac2 center/cover no-repeat}
.sheet.s3{background:#d9d6cf}
.sheet.s4{background:repeating-linear-gradient(45deg,#8e8b85 0 6px,#a5a29c 6px 12px)}
.stack.open .s1{transform:rotateX(58deg) rotateZ(-38deg) translateZ(180px)}
.stack.open .s2{transform:rotateX(58deg) rotateZ(-38deg) translateZ(60px)}
.stack.open .s3{transform:rotateX(58deg) rotateZ(-38deg) translateZ(-60px)}
.stack.open .s4{transform:rotateX(58deg) rotateZ(-38deg) translateZ(-180px)}
.llist{list-style:none;padding:0;margin:0;display:grid;gap:28px}
.llist li{display:grid;grid-template-columns:44px minmax(0,1fr);gap:16px;opacity:.35;transition:opacity .6s var(--ease)}
.llist.open li{opacity:1}
.llist.open li:nth-child(2){transition-delay:.15s}.llist.open li:nth-child(3){transition-delay:.3s}.llist.open li:nth-child(4){transition-delay:.45s}
.llist .n{font-size:28px;font-weight:700;color:var(--stageaccent);line-height:1}
.llist h3{font-size:21px;font-weight:600}
.llist p{margin:4px 0 0;color:var(--stagefg2);font-size:16px}

/* numbers */
.nums{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-top:56px}
.num{background:var(--bg2);border-radius:24px;padding:32px 24px;text-align:center}
.num b{display:block;font-size:clamp(36px,4vw,52px);font-weight:700;letter-spacing:-.04em;line-height:1;font-variant-numeric:tabular-nums}
.num span{display:block;color:var(--fg2);margin-top:10px;font-size:15px}
.section{padding-block:140px 0}

/* how-to */
.howto{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:56px;list-style:none;padding:0}
.howto li{border-top:1px solid var(--line);padding-top:24px}
.howto .n{font-size:15px;font-weight:600;color:var(--accent)}
.howto h3{font-size:24px;font-weight:600;margin-top:8px}
.howto p{color:var(--fg2);margin:8px 0 0}

/* specs + faq */
.two{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;margin-top:56px;align-items:start}
.specs{width:100%;border-collapse:collapse;font-size:16px}
.specs th,.specs td{text-align:left;padding:14px 0;border-bottom:1px solid var(--line);vertical-align:top}
.specs th{color:var(--fg2);font-weight:400;width:48%}
.specs td{font-weight:500;font-variant-numeric:tabular-nums}
details{border-bottom:1px solid var(--line)}
summary{list-style:none;cursor:pointer;padding:18px 0;font-weight:600;font-size:17px;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-weight:300;font-size:24px;line-height:1;transition:transform .35s var(--ease)}
details[open] summary::after{transform:rotate(45deg)}
details p{margin:0 0 18px;color:var(--fg2);animation:fade .4s var(--ease)}
@keyframes fade{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* related */
.rail{display:grid;grid-auto-flow:column;grid-auto-columns:min(280px,70vw);gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:40px 22px 24px;margin-inline:-22px;scrollbar-width:none}
.rail::-webkit-scrollbar{display:none}
.card{scroll-snap-align:start;background:var(--bg2);border-radius:24px;padding:16px 16px 20px;color:var(--fg);transition:transform .45s var(--ease),box-shadow .45s var(--ease)}
.card:hover{text-decoration:none;transform:translateY(-6px);box-shadow:0 24px 48px -28px rgba(0,0,0,.35)}
.card .ph{aspect-ratio:1/1;border-radius:14px;overflow:hidden;margin-bottom:14px}
.card .ph img{width:100%;height:100%;object-fit:cover;transition:transform 1s var(--ease)}
.card:hover .ph img{transform:scale(1.06)}
.card h3{font-size:17px;font-weight:600}
.card span{font-size:15px;color:var(--fg2);font-variant-numeric:tabular-nums}

footer{background:var(--bg2);color:var(--fg2);font-size:12px;padding-block:28px 40px;margin-top:140px}

/* drawer */
.scrim{position:fixed;inset:0;background:var(--scrim);opacity:0;pointer-events:none;transition:opacity .4s;z-index:70}
.scrim.on{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(420px,100vw);background:var(--bg);z-index:80;transform:translateX(100%);transition:transform .55s var(--ease);display:flex;flex-direction:column;padding:calc(20px + env(safe-area-inset-top,0px)) 24px calc(24px + env(safe-area-inset-bottom,0px));box-shadow:-30px 0 60px -30px rgba(0,0,0,.35)}
.drawer.on{transform:none}
.drawer header{display:flex;justify-content:space-between;align-items:center}
.drawer h2{font-size:28px;font-weight:700}
.items{flex:1;overflow:auto;margin-top:20px;display:grid;align-content:start;gap:16px}
.item{display:grid;grid-template-columns:72px minmax(0,1fr) auto;gap:14px;align-items:center;animation:fade .4s var(--ease)}
.item img{width:72px;height:72px;border-radius:12px;object-fit:cover}
.item b{display:block;font-size:15px;font-weight:600}
.item span{font-size:13px;color:var(--fg2);font-variant-numeric:tabular-nums}
.item .sum{font-weight:600;font-variant-numeric:tabular-nums}
.empty{color:var(--fg2);text-align:center;margin-top:40px}
.total{border-top:1px solid var(--line);padding-top:16px;display:flex;justify-content:space-between;font-size:19px;font-weight:600;font-variant-numeric:tabular-nums}
.drawer .note{font-size:13px;color:var(--fg2);margin:6px 0 16px}
.drawer .pill{width:100%;min-height:52px}

.rv{transition:opacity 1s var(--ease),transform 1s var(--ease)}
.js .rv.pre{opacity:.12;transform:translateY(40px)}

@media (max-width:900px){
  .links{display:none}
  .pdp{grid-template-columns:1fr;gap:28px}
  .gallery{position:static}
  .navarrow{opacity:1}
  .lgrid,.two{grid-template-columns:1fr;gap:40px}
  .stack{height:340px}
  .nums{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
  .howto{grid-template-columns:1fr}
  .buybar .r .pp{display:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .js .rv.pre{opacity:1;transform:none}
}

/* added: bundle, about, uses, reads */
.h2.sm{font-size:clamp(28px,3.4vw,40px)}
.prosebox p{color:var(--fg2);margin:16px 0 0;font-size:18px}
.uses{list-style:none;padding:0;margin:24px 0 0;display:flex;flex-wrap:wrap;gap:10px}
.uses li{padding:10px 16px;border-radius:980px;background:var(--bg2);font-size:15px;font-weight:500}
.section.about{padding-top:120px}
.bundle{margin-top:24px;border:1px solid var(--line);border-radius:20px;padding:18px}
.bundle h3{font-size:17px;font-weight:600;margin-bottom:6px}
.bi{display:grid;grid-template-columns:22px 52px minmax(0,1fr) auto;gap:12px;align-items:center;padding:10px 0;cursor:pointer}
.bi+.bi{border-top:1px solid var(--line)}
.bi input{width:18px;height:18px;accent-color:var(--fg);margin:0}
.bi img{width:52px;height:52px;border-radius:10px;object-fit:cover}
.bi b{display:block;font-size:14px;font-weight:600;line-height:1.3}
.bi b a{color:var(--fg)}
.bi small{display:block;font-size:12px;color:var(--fg2);line-height:1.3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bi em{font-style:normal;font-weight:600;font-size:15px;font-variant-numeric:tabular-nums}
.btot{display:flex;justify-content:space-between;align-items:baseline;padding:12px 0;border-top:1px solid var(--line);font-variant-numeric:tabular-nums}
.btot span{color:var(--fg2);font-size:15px}
.btot b{font-size:19px}
.bundle .pill{width:100%}
.reads{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:28px}
.read{display:grid;grid-template-columns:140px minmax(0,1fr);gap:18px;align-items:center;background:var(--bg2);border-radius:22px;padding:12px;color:var(--fg)}
.read:hover{text-decoration:none}
.read img{width:140px;height:100px;object-fit:cover;border-radius:14px}
.read small{display:block;color:var(--fg2);font-size:13px}
.read b{font-size:18px;line-height:1.25;letter-spacing:-.02em}
.stagebox img{object-fit:cover}
@media (max-width:900px){.reads{grid-template-columns:1fr}.read{grid-template-columns:96px minmax(0,1fr)}.read img{width:96px;height:80px}}

.pill.nudge{animation:nudge .6s var(--ease)}
@keyframes nudge{30%{transform:scale(1.04)}60%{transform:scale(.98)}100%{transform:none}}
.stagebox .mg{position:absolute;inset:0;aspect-ratio:auto;border-radius:0;opacity:0;pointer-events:none;transition:opacity .8s var(--ease);z-index:1}
.stagebox .mg.on{opacity:1;pointer-events:auto;z-index:2}
.stagebox .navarrow{z-index:4}
.thumbs button.tv{position:relative}
.thumbs button.tv::after{content:"до / після";position:absolute;left:4px;right:4px;bottom:4px;border-radius:6px;background:rgba(0,0,0,.6);color:#fff;font-size:9px;font-weight:600;text-align:center;padding:2px 0}

/* v2: product images from category sprites */
.im{display:block;width:100%;height:100%;background-repeat:no-repeat;background-color:#fff;transition:transform 1s var(--ease,ease)}
.card:hover .ph .im,.pcard:hover .ph .im{transform:scale(1.06)}
.wc-item .im,.wc-ups .o .im,.line .im{width:64px;height:64px;border-radius:12px;flex-shrink:0}
.bump .im{width:52px;height:52px;border-radius:10px}
.bi .im{width:52px;height:52px;border-radius:10px;flex-shrink:0}
.thumbs button .im{width:100%;height:100%}
.stagebox img.fit{object-fit:contain;background:#fff}
.stock.wait i{background:#c98a1b}
.subs{display:flex;gap:8px;flex-wrap:wrap;padding-top:22px}
.subs button{min-height:36px;padding:0 14px;border-radius:980px;border:1px solid var(--line);background:transparent;color:var(--fg);font:inherit;font-size:14px;cursor:pointer;white-space:nowrap}
.subs button span{color:var(--fg2);margin-left:6px;font-variant-numeric:tabular-nums}
.subs button[aria-pressed="true"]{background:var(--fg);color:var(--bg);border-color:var(--fg)}
.subs button[aria-pressed="true"] span{color:inherit;opacity:.7}

/* mobile buy button: keep label and sum on one line; wrap under qty on very narrow screens */
@media (max-width:420px){.qtyrow{flex-wrap:wrap}.qtyrow .pill.big{font-size:15px;white-space:nowrap;padding-left:12px;padding-right:12px;flex:1 1 200px}.qtyrow .step{width:112px}.calcout b{white-space:nowrap}.pdp>*{min-width:0}}