/* =====================================================================
   Product — CB350C display area. One continuous walk-around:
   Design → Engine → Technology → Safety → Comfort → Ride → Specs →
   Colours → Finance → Test ride
   ===================================================================== */
.page-product { --studio: #181616; }  /* matches the brochure studio backdrop */

/* Shared section header */
.sec-head { display: grid; gap: 16px; max-width: 760px; margin-bottom: clamp(40px, 4.5vw, 80px); }
.sec-head--row { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 24px 40px; max-width: none; }
.sec-head--row > div:first-child { display: grid; gap: 16px; }

/* ---------- Hero: the bike on the plinth ---------- */
.ph { position: relative; grid-template-columns: minmax(0, 1fr); min-height: 100vh; min-height: 100svh; max-height: 1060px; display: grid; align-items: end; overflow: hidden; background: var(--studio); }
.ph__media { position: absolute; top: 0; bottom: 0; right: 0; width: 62%; }
.ph__img { width: 100%; height: 100%; object-fit: cover; object-position: 30% 50%;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 22%); mask-image: linear-gradient(90deg, transparent 0%, #000 22%); }
.ph__shade { position: absolute; inset: 0; pointer-events: none; background: linear-gradient(to top, rgba(24,22,22,.9) 0%, rgba(24,22,22,0) 30%), linear-gradient(to bottom, rgba(0,0,0,.5), rgba(0,0,0,0) 18%); }
.ph__copy { position: relative; z-index: 2; display: grid; gap: 22px; justify-items: start; padding-block: calc(var(--hdr) + 48px) clamp(56px, 9vh, 104px); }
.ph__model { font: 600 15px var(--f-display); letter-spacing: .3em; text-transform: uppercase; }
.ph__title { font-size: clamp(44px, 4.6vw + 8px, 92px); max-width: 13ch; }
.ph__price { display: grid; gap: 2px; }
.ph__price .num { font-size: 34px; }
@media (max-width: 1023px) {
  .ph { min-height: 0; max-height: none; align-items: start; }
  .ph__media { position: relative; width: 100%; aspect-ratio: 1 / 1; max-height: 70vh; }
  .ph__img { -webkit-mask-image: linear-gradient(to top, transparent 0%, #000 26%); mask-image: linear-gradient(to top, transparent 0%, #000 26%); object-position: 50% 40%; }
  .ph__shade { background: linear-gradient(to bottom, rgba(0,0,0,.5), rgba(0,0,0,0) 14%); }
  .ph__copy { margin-top: -18vw; padding-top: 0; padding-bottom: 48px; }
  .ph .crumbs { order: -1; }
}
@media (max-width: 599px) {
  .ph__copy { margin-top: -22vw; gap: 18px; }
  .ph__title { font-size: clamp(32px, 9.2vw, 52px); }
  .ph .crumbs { display: none; }
  .ph__copy .btn-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 10px; width: 100%; }
  .ph__copy .btn { padding-inline: 12px; letter-spacing: .08em; font-size: 12px; }
  .ph__copy .btn--primary { grid-column: 1 / -1; }
  .ph__copy .btn--text { justify-content: start; white-space: normal; text-align: left; }
}

/* ---------- Chapter bar ---------- */
.chap { position: sticky; top: 0; z-index: 60; background: rgba(11,11,12,.96); border-block: 1px solid var(--steel); transition: top .45s var(--ease-out); }
.hdr-visible .chap { top: 68px; }
.chap__inner { display: flex; align-items: center; gap: 28px; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); height: 60px; }
.chap__name { font: 600 14px var(--f-display); letter-spacing: .24em; text-transform: uppercase; padding-right: 28px; border-right: 1px solid var(--steel); }
.chap__list { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; flex: 1; min-width: 0; position: relative; }
.chap__list::-webkit-scrollbar { display: none; }
.chap__list a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 12px; font: 500 12px var(--f-display); letter-spacing: .14em; text-transform: uppercase; color: var(--metal); text-decoration: none; white-space: nowrap; transition: color .3s; position: relative; }
.chap__list a::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: 6px; height: 1px; background: #fff; transform: scaleX(0); transform-origin: left; transition: transform .4s var(--ease-out); }
.chap__list a:hover, .chap__list a[aria-current] { color: #fff; }
.chap__list a[aria-current]::after { transform: none; }
.chap__progress { position: absolute; left: 0; right: 0; bottom: -1px; height: 1px; }
.chap__progress span { display: block; height: 100%; background: var(--red); transform-origin: left; transform: scaleX(0); }
@media (max-width: 767px) {
  .chap__inner { height: 52px; gap: 12px; }
  .chap__name { display: none; }
  .chap__cta { display: none; }
  .hdr-visible .chap { top: 60px; }
}

/* ---------- 01 Design: walk around it ---------- */
.design { background: var(--night); }
.design__grid { display: grid; grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); gap: clamp(28px, 3vw, 56px); align-items: start; }
.design__stage { position: relative; }
.design__bike { aspect-ratio: 901 / 532; background: #1F1C1D; border-radius: var(--r); overflow: hidden; }
.design__img { width: 100%; height: 100%; object-fit: contain; }
.hs-layer { position: absolute; inset: 0; }
.hs { position: absolute; left: var(--x); top: var(--y); width: 44px; height: 44px; margin: -22px 0 0 -22px; padding: 0; border: 0; border-radius: 50%; background: none; }
.hs::before { content: ""; position: absolute; inset: 13px; border-radius: 50%; background: #fff; box-shadow: 0 0 0 1px rgba(0,0,0,.4); transition: transform .3s var(--ease-out), background-color .3s; }
.hs::after { content: ""; position: absolute; inset: 4px; border-radius: 50%; border: 1px solid rgba(255,255,255,.7); animation: hsPulse 2.6s var(--ease) infinite; }
.hs:hover::before { transform: scale(1.25); }
.hs[aria-selected="true"]::before { background: var(--red); transform: scale(1.15); }
.hs[aria-selected="true"]::after { border-color: var(--red); animation: none; }
@keyframes hsPulse { 0% { transform: scale(.6); opacity: 1; } 80%, 100% { transform: scale(1.25); opacity: 0; } }
.design__panels { position: relative; min-height: 100%; }
.spot { display: grid; gap: 12px; align-content: start; outline-offset: 6px; }
.spot__img { aspect-ratio: 4 / 3; overflow: hidden; border-radius: var(--r); background: var(--carbon); margin-bottom: 10px; }
.spot__img img { width: 100%; height: 100%; object-fit: cover; }
.spot p:not(.label) { color: var(--mist); font-size: 16px; }
.spot.is-in .spot__img img { animation: hpIn .9s var(--ease-out); }
@keyframes hpIn { from { transform: scale(1.08); opacity: .4; } to { transform: none; opacity: 1; } }
.design__nav { display: flex; align-items: center; gap: 4px; margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--steel); }
.design__nav .num { font-size: 20px; margin-right: auto; color: var(--mist); }
.design__nav .icon-btn { border: 1px solid var(--steel); border-radius: 50%; transition: border-color .3s; }
.design__nav .icon-btn:hover { border-color: #fff; }
.design__nav svg.flip { transform: scaleX(-1); }
@media (max-width: 1023px) {
  .design__grid { grid-template-columns: minmax(0, 1fr); }
  .spot { grid-template-columns: 160px 1fr; column-gap: 20px; }
  .spot__img { grid-row: span 3; margin: 0; }
}
@media (max-width: 599px) {
  .hs { width: 36px; height: 36px; margin: -18px 0 0 -18px; }
  .hs::before { inset: 11px; }
  .spot { grid-template-columns: minmax(0, 1fr); }
  .spot__img { grid-row: auto; aspect-ratio: 16 / 9; }
}

/* ---------- 02 Engine ---------- */
.engine { background: var(--studio); border-top: 1px solid var(--steel); }
.engine__grid { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: clamp(40px, 5vw, 96px); align-items: center; }
.engine__media { position: relative; aspect-ratio: 1307 / 1460; max-height: 86vh; overflow: hidden; border-radius: var(--r); }
.engine__img { width: 100%; height: 100%; object-fit: cover; }
.engine__lines { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.engine__lines path { stroke: rgba(255,255,255,.22); stroke-width: 1; vector-effect: non-scaling-stroke; stroke-dasharray: 1; stroke-dashoffset: 0; }
.engine__copy .sec-head { margin-bottom: 40px; }
.readouts { display: grid; border-top: 1px solid var(--steel); }
.ro { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 16px; align-items: baseline; padding: 20px 0; border-bottom: 1px solid var(--steel); }
.ro dt { display: flex; align-items: center; gap: 12px; font: 600 12px var(--f-display); letter-spacing: .16em; text-transform: uppercase; color: var(--metal); }
.ro dt svg { width: 22px; height: 22px; color: #fff; }
.ro dd { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 12px; }
.ro .num { font-size: clamp(44px, 3vw + 14px, 68px); line-height: 1; }
.ro__u { font-size: 14px; color: var(--mist); }
.engine__fine { margin-top: 24px; font-size: 13px; color: var(--metal); }
@media (max-width: 1023px) {
  .engine__grid { grid-template-columns: minmax(0, 1fr); }
  .engine__media { aspect-ratio: 4 / 3; }
  .engine__img { object-position: 50% 60%; }
}
@media (max-width: 599px) { .ro { grid-template-columns: minmax(0, 1fr); gap: 6px; } }

/* ---------- 03 Technology ---------- */
.tech__grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 12px; }
.tc { grid-column: span 4; display: grid; align-content: start; background: var(--ice); border-radius: var(--r); overflow: hidden; transition: background-color .4s; }
.tc:hover { background: #E4E7E9; }
.tc figure { overflow: hidden; }
.tc__img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease-out); }
.tc:hover .tc__img { transform: scale(1.04); }
.tc__body { display: grid; gap: 12px; align-content: start; padding: clamp(22px, 2vw, 32px); }
.tc__body > svg { width: 34px; height: 34px; margin-bottom: 8px; }
.tc__body p { font-size: 15px; color: var(--ink-2); }
.tc__body .tc__on { font: 600 11px var(--f-display); letter-spacing: .16em; text-transform: uppercase; color: var(--ink); }
.tc--wide { grid-column: span 8; grid-row: span 2; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); align-content: stretch; }
.tc--wide figure { position: relative; } .tc--wide .tc__img { position: absolute; inset: 0; }
.tc--wide figure { min-height: 100%; }
.tc--wide .tc__body { align-content: end; }
.tc--img:not(.tc--wide) figure { aspect-ratio: 21 / 9; }
@media (max-width: 1023px) {
  .tc { grid-column: span 6; }
  .tc--wide { grid-column: 1 / -1; grid-row: auto; grid-template-columns: 1fr 1fr; }
  .tc--img:not(.tc--wide) { grid-row: auto; }
}
@media (max-width: 599px) {
  .tc, .tc--wide { grid-column: 1 / -1; grid-template-columns: minmax(0, 1fr); }
  .tc--wide figure { aspect-ratio: 16 / 10; }
}

/* ---------- 04 Safety ---------- */
.safety { background: var(--night); }
.safety__list { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border-top: 1px solid var(--steel); }
.safety__list li { display: grid; gap: 14px; align-content: start; padding: 32px 24px 8px 0; position: relative; }
.safety__list li + li { padding-left: 24px; border-left: 1px solid var(--steel); }
.safety__list svg { width: 52px; height: 52px; margin-bottom: 12px; stroke-width: 1.1; }
.safety__list h3 { font: 500 19px/1.15 var(--f-display); letter-spacing: .06em; text-transform: uppercase; }
.safety__list p { font-size: 15px; color: var(--metal); }
@media (max-width: 1023px) {
  .safety__list { grid-template-columns: 1fr 1fr; }
  .safety__list li, .safety__list li + li { padding: 28px 20px 28px 0; border-left: 0; border-bottom: 1px solid var(--steel); }
  .safety__list li:nth-child(even) { padding-left: 20px; border-left: 1px solid var(--steel); }
}
@media (max-width: 599px) {
  .safety__list { grid-template-columns: minmax(0, 1fr); }
  .safety__list li, .safety__list li:nth-child(even) { grid-template-columns: 44px 1fr; column-gap: 18px; padding: 22px 0; border-left: 0; }
  .safety__list svg { width: 40px; height: 40px; margin: 0; grid-row: span 2; }
}

/* ---------- 05 Comfort ---------- */
.comfort__grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(40px, 5vw, 96px); align-items: center; }
.comfort__media { aspect-ratio: 1600 / 1241; overflow: hidden; border-radius: var(--r); background: var(--studio); }
.comfort__img { width: 100%; height: 100%; object-fit: cover; }
.comfort__facts { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid rgba(17,18,20,.14); }
.comfort__facts div { display: grid; gap: 8px; padding: 22px 16px 22px 0; border-bottom: 1px solid rgba(17,18,20,.14); }
.comfort__facts dt { display: flex; align-items: center; gap: 10px; font: 600 11px var(--f-display); letter-spacing: .16em; text-transform: uppercase; color: var(--ink-2); }
.comfort__facts dt svg { width: 20px; height: 20px; color: var(--ink); }
.comfort__facts dd { font-size: 16px; }
.comfort__facts .num { font-size: 48px; line-height: 1; }
@media (max-width: 1023px) { .comfort__grid { grid-template-columns: minmax(0, 1fr); } }

/* ---------- 06 Riding experience ---------- */
.ride { background: var(--night); border-top: 1px solid var(--steel); }
.ride__pin { overflow: hidden; padding-block: clamp(80px, 8vw, 128px) clamp(56px, 6vw, 96px); }
.ride__head { display: grid; gap: 16px; margin-bottom: clamp(32px, 4vw, 56px); }
.ride__track { display: flex; gap: 20px; width: max-content; padding-inline: var(--gutter); }
.rp { display: grid; gap: 14px; align-content: start; width: clamp(300px, 30vw, 460px); }
.rp:nth-child(odd) { width: clamp(340px, 44vw, 680px); }
.rp figure { aspect-ratio: 4 / 3; overflow: hidden; border-radius: var(--r); background: var(--studio); }
.rp:nth-child(even) figure { aspect-ratio: 3 / 4; max-height: 62vh; width: auto; }
.rp__img { width: 100%; height: 100%; object-fit: cover; }
.rp .h3 { display: flex; align-items: baseline; gap: 14px; }
.rp .h3::before { content: counter(rp, decimal-leading-zero); counter-increment: rp; font: 300 14px var(--f-display); letter-spacing: .14em; color: var(--metal); }
.ride__track { counter-reset: rp; }
.rp p { color: var(--mist); max-width: 40ch; font-size: 16px; }
/* Desktop: panels are sized from the screen height so the pinned section
   (heading, photo, caption) always fits one screen, from 1366×768 upwards */
@media (min-width: 1024px) {
  .ride { --rh: clamp(240px, calc(100vh - 380px), 560px); }
  .ride__pin { padding-block: clamp(76px, 11vh, 128px) clamp(32px, 5vh, 96px); }
  .ride__head { margin-bottom: clamp(20px, 3.5vh, 56px); }
  .rp, .rp:nth-child(odd) { width: calc(var(--rh) * 4 / 3); }
  .rp:nth-child(even) { width: calc(var(--rh) * .86); }
  .rp figure, .rp:nth-child(even) figure { aspect-ratio: auto; height: var(--rh); max-height: none; width: 100%; }
}
html:not(.motion) .ride__track { width: auto; overflow-x: auto; scroll-snap-type: x mandatory; scroll-padding-inline: var(--gutter); padding-bottom: 12px; }
html:not(.motion) .rp { flex: none; scroll-snap-align: start; }
@media (max-width: 1023px) {
  .ride__track { width: auto; overflow-x: auto; scroll-padding-inline: var(--gutter); scroll-snap-type: x mandatory; scrollbar-width: none; padding-bottom: 8px; }
  .ride__track::-webkit-scrollbar { display: none; }
  .rp, .rp:nth-child(odd) { width: min(78vw, 460px); flex: none; scroll-snap-align: start; }
  .rp:nth-child(even) figure { aspect-ratio: 4 / 3; max-height: none; }
}

/* ---------- 07 Specifications ---------- */
.specs { background: var(--night); border-top: 1px solid var(--steel); }
.bignums { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--steel); }
.bignums div { display: grid; gap: 6px; padding: clamp(24px, 2.6vw, 40px) 24px clamp(24px, 2.6vw, 40px) 0; border-bottom: 1px solid var(--steel); }
.bignums div:not(:nth-child(3n + 1)) { padding-left: clamp(20px, 2.4vw, 40px); border-left: 1px solid var(--steel); }
.bignums dd { order: -1; font-size: clamp(64px, 6vw + 8px, 136px); line-height: .9; }
.bignums dt { font: 600 12px var(--f-display); letter-spacing: .16em; text-transform: uppercase; color: var(--metal); }
@media (max-width: 767px) {
  .bignums { grid-template-columns: 1fr 1fr; }
  .bignums dd { font-size: clamp(40px, 12vw, 72px); }
  .bignums div:not(:nth-child(3n + 1)) { padding-left: 0; border-left: 0; }
  .bignums div:nth-child(even) { padding-left: 18px; border-left: 1px solid var(--steel); }
}

/* Full specification panel */
.specdlg { width: min(1180px, 100vw); max-width: 100vw; max-height: 100dvh; height: 100dvh; margin: 0 0 0 auto; padding: 0; border: 0; background: var(--night); color: #fff; }
.specdlg::backdrop { background: rgba(0,0,0,.7); }
.specdlg[open] { animation: slideIn .5s var(--ease-out); }
@keyframes slideIn { from { transform: translateX(40px); opacity: 0; } to { transform: none; opacity: 1; } }
.specdlg__in { display: grid; grid-template-rows: auto 1fr auto; height: 100%; }
.specdlg__top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 22px var(--gutter); border-bottom: 1px solid var(--steel); }
.specdlg__groups { overflow-y: auto; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px clamp(32px, 4vw, 72px); padding: 36px var(--gutter); align-content: start; }
.specdlg__groups section { display: grid; gap: 14px; align-content: start; }
.specdlg__groups .label + dl, .specdlg__groups dl + .label { margin-top: 0; }
.specdlg__groups dl + .label { margin-top: 26px; }
.specdlg dl { display: grid; border-top: 1px solid var(--steel); }
.specdlg dl div { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--steel); font-size: 15px; }
.specdlg dt { color: var(--metal); }
.specdlg__src { padding: 18px var(--gutter); border-top: 1px solid var(--steel); font-size: 13px; color: var(--metal); }
@media (max-width: 767px) { .specdlg__groups { grid-template-columns: minmax(0, 1fr); } }

/* ---------- 08 Colours ---------- */
.colours__grid { display: grid; grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); gap: clamp(32px, 4vw, 72px); align-items: center; }
.colours__stage { position: relative; display: grid; aspect-ratio: 16 / 10; background: #1D1B1C; border-radius: var(--r); overflow: hidden; }
.cimg { grid-area: 1 / 1; width: 100%; height: 100%; object-fit: contain; opacity: 0; transform: translateX(3%); transition: opacity .6s var(--ease-out), transform .8s var(--ease-out); }
.cimg.is-on { opacity: 1; transform: none; }
.cimg--se { object-fit: cover; padding: 0; }
.colours__side { display: grid; gap: 18px; align-content: center; justify-items: start; }
.colours__name { font: 500 clamp(28px, 1.6vw + 12px, 40px)/1.05 var(--f-display); font-stretch: 108%; text-transform: uppercase; }
.dots { display: flex; flex-wrap: wrap; gap: 12px; padding: 6px 0; }
.dot { position: relative; width: 44px; height: 44px; padding: 0; border: 0; border-radius: 50%; background: none; }
.dot::before { content: ""; position: absolute; inset: 7px; border-radius: 50%; background: var(--sw); box-shadow: inset 0 0 0 1px rgba(17,18,20,.18), inset -6px -8px 12px rgba(0,0,0,.25), inset 4px 5px 8px rgba(255,255,255,.25); }
.dot::after { content: ""; position: absolute; inset: 1px; border-radius: 50%; border: 1px solid transparent; transition: border-color .3s, transform .3s var(--ease-out); transform: scale(.9); }
.dot:hover::after { border-color: rgba(17,18,20,.35); transform: none; }
.dot[aria-checked="true"]::after { border-color: var(--ink); transform: none; }
.colours__facts { display: grid; width: 100%; border-top: 1px solid rgba(17,18,20,.14); }
.colours__facts li { display: flex; gap: 12px; align-items: center; padding: 11px 0; border-bottom: 1px solid rgba(17,18,20,.14); font-size: 15px; }
.colours__facts svg { width: 18px; height: 18px; color: var(--ink-2); }
.colours__side .btn { white-space: normal; text-align: left; line-height: 1.35; padding-block: 12px; }
.colours__fine { font-size: 12px; color: var(--ink-2); }
@media (max-width: 1023px) { .colours__grid { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 599px) { .vtabs { display: flex; flex-wrap: wrap; gap: 8px; } .vtabs .chip { min-height: 44px; padding: 0 16px; font-size: 14px; } }
.vtabs { display: flex; gap: 8px; }
.vtabs .chip[aria-selected="true"] { background: var(--ink); border-color: var(--ink); color: #fff; }

/* ---------- FAQ ---------- */
.faq { background: var(--night); border-top: 1px solid var(--steel); }
.faq__grid { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(32px, 5vw, 96px); }
.faq__list { border-top: 1px solid var(--steel); }
.faq details { border-bottom: 1px solid var(--steel); }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 72px; padding: 16px 0; cursor: pointer; list-style: none; font: 500 clamp(18px, .5vw + 15px, 22px)/1.3 var(--f-display); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary svg { width: 22px; height: 22px; transition: transform .4s var(--ease-out); }
.faq details[open] summary svg { transform: rotate(45deg); }
.faq details p { padding: 0 0 24px; color: var(--mist); max-width: 64ch; }
@media (max-width: 1023px) { .faq__grid { grid-template-columns: minmax(0, 1fr); } }

/* Finance on product page: finance section uses ice band from sections.css */

/* ---------- Reveal utility (motion only) ---------- */
html.motion [data-reveal] { will-change: transform; }

@media (prefers-reduced-motion: reduce) {
  .hs::after { animation: none; }
  .cimg { transition: none; }
  .spot.is-in .spot__img img { animation: none; }
}