.page-products {
  --prod-idx-w: 178px;
  --prod-gap: clamp(24px, 3.4vw, 48px);
  --prod-part-pad: 18px 16px 46px;
}

/* ---------- hero ---------- */
.page-products .prod-hero {
  padding: clamp(26px, 5vw, 58px) 0 clamp(34px, 5vw, 62px);
}

.page-products .prod-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.5vw, 40px);
}

.page-products .prod-hero__text {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.page-products .prod-hero__code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mint);
}

.page-products .prod-hero h1 {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(1.85rem, 4.4vw, 3.05rem);
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--star);
  text-wrap: balance;
}

.page-products .prod-hero__lead {
  margin: 0;
  max-width: 40ch;
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--haze);
}

.page-products .prod-hero__lead--sub {
  padding-left: 14px;
  border-left: 2px solid var(--blue);
  color: var(--star);
  opacity: 0.86;
}

.page-products .prod-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

.page-products .prod-hero__media {
  margin: 0;
}

/* ---------- catalog shell ---------- */
.page-products .prod-catalog {
  padding: clamp(12px, 2vw, 22px) 0 clamp(46px, 7vw, 92px);
  border-top: 1px solid var(--grid);
}

.page-products .prod-catalog__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: clamp(24px, 4vw, 44px) 0 clamp(20px, 3vw, 34px);
}

.page-products .prod-catalog__title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(1.3rem, 2.4vw, 1.85rem);
  line-height: 1.35;
  color: var(--star);
}

.page-products .prod-catalog__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--prod-gap);
}

/* ---------- index rail ---------- */
.page-products .prod-index {
  min-width: 0;
}

.page-products .prod-index__head {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--haze);
}

.page-products .prod-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-products .prod-index__list > li {
  flex: 0 0 auto;
}

.page-products .prod-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  background: var(--glass);
  font-size: 0.82rem;
  line-height: 1.2;
  color: var(--star);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.22s var(--ease), color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-products .prod-index__link::before {
  content: attr(data-code);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--amber);
  transition: color 0.22s var(--ease);
}

.page-products .prod-index__link:hover,
.page-products .prod-index__link:focus-visible {
  border-color: var(--mint);
  background: rgba(47, 232, 176, 0.09);
  color: var(--mint);
}

.page-products .prod-index__link:hover::before,
.page-products .prod-index__link:focus-visible::before {
  color: var(--mint);
}

/* ---------- groups ---------- */
.page-products .prod-groups {
  display: flex;
  flex-direction: column;
  gap: clamp(38px, 6vw, 74px);
  min-width: 0;
}

.page-products .prod-group {
  padding-top: clamp(26px, 4vw, 40px);
  border-top: 1px solid var(--grid);
}

.page-products .prod-group:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-products .prod-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.page-products .prod-group__title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(1.15rem, 2.2vw, 1.6rem);
  line-height: 1.4;
  color: var(--star);
  text-wrap: balance;
}

.page-products .prod-group__intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-bottom: 20px;
}

.page-products .prod-group__media {
  margin: 0;
}

.page-products .prod-group__lead {
  margin: 0;
  align-self: center;
  max-width: 46ch;
  font-size: 0.97rem;
  line-height: 1.82;
  color: var(--haze);
}

.page-products .prod-group__parts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

/* ---------- part card ---------- */
.page-products .prod-part {
  position: relative;
  padding: var(--prod-part-pad);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  background: var(--glass);
  scroll-margin-top: 96px;
  transition: border-color 0.24s var(--ease), background 0.24s var(--ease);
}

.page-products .prod-part:hover,
.page-products .prod-part:focus-within {
  border-color: var(--blue);
  background: rgba(59, 107, 255, 0.07);
}

.page-products .prod-part__num {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 9px;
  border: 1px solid rgba(255, 194, 74, 0.45);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-products .prod-part__title {
  margin: 0 0 8px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.4;
  color: var(--star);
}

.page-products .prod-part__desc {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--haze);
}

.page-products .prod-part__scene {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0;
  padding: 9px 14px;
  background: linear-gradient(180deg, rgba(31, 20, 64, 0.94), rgba(21, 12, 46, 0.99));
  border-top: 1px solid var(--mint);
  border-radius: 0 0 var(--radius) var(--radius);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1.5;
  color: var(--mint);
  opacity: 0;
  transform: translateY(6px);
  pointer-events: none;
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-products .prod-part:hover .prod-part__scene,
.page-products .prod-part:focus-within .prod-part__scene {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- anatomy ---------- */
.page-products .prod-anatomy {
  padding: clamp(40px, 6vw, 84px) 0;
  background: linear-gradient(180deg, rgba(31, 20, 64, 0.55), rgba(21, 12, 46, 0));
  border-top: 1px solid var(--grid);
}

.page-products .prod-anatomy__head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: clamp(22px, 3.4vw, 38px);
}

.page-products .prod-anatomy__head h2 {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(1.25rem, 2.4vw, 1.85rem);
  line-height: 1.35;
  color: var(--star);
}

.page-products .prod-anatomy__lead {
  margin: 0;
  max-width: 52ch;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--haze);
}

.page-products .prod-anatomy__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-products .prod-anatomy__item {
  padding: 20px 18px;
  background: var(--deep);
}

.page-products .prod-anatomy__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  color: var(--blue);
}

.page-products .prod-anatomy__item h3 {
  margin: 0 0 8px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.4;
  color: var(--star);
}

.page-products .prod-anatomy__item p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--haze);
}

.page-products .prod-anatomy__note {
  margin: clamp(22px, 3vw, 32px) 0 0;
  max-width: 62ch;
  padding-left: 16px;
  border-left: 2px solid var(--amber);
  font-size: 0.93rem;
  line-height: 1.82;
  color: var(--star);
  opacity: 0.88;
}

/* ---------- finder ---------- */
.page-products .prod-finder {
  padding: clamp(42px, 6vw, 88px) 0;
  border-top: 1px solid var(--grid);
}

.page-products .prod-finder__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-products .prod-finder__head h2 {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(1.25rem, 2.4vw, 1.85rem);
  line-height: 1.35;
  color: var(--star);
}

.page-products .prod-finder__label {
  display: inline-flex;
  position: relative;
  align-items: center;
  gap: 0;
  margin-bottom: clamp(22px, 3vw, 36px);
  padding: 4px;
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  background: var(--night);
  cursor: pointer;
  user-select: none;
}

.page-products .prod-finder__opt {
  position: relative;
  z-index: 1;
  padding: 8px 22px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--haze);
  transition: color 0.24s var(--ease);
}

.page-products .prod-finder__knob {
  position: absolute;
  top: 4px;
  left: 4px;
  width: calc(50% - 4px);
  height: calc(100% - 8px);
  border: 1px solid var(--mint);
  border-radius: var(--radius);
  background: rgba(47, 232, 176, 0.12);
  transition: transform 0.28s var(--ease);
}

.page-products .prod-finder__input:checked ~ .prod-finder__label .prod-finder__knob {
  transform: translateX(100%);
}

.page-products .prod-finder__input:not(:checked) ~ .prod-finder__label .prod-finder__opt--a,
.page-products .prod-finder__input:checked ~ .prod-finder__label .prod-finder__opt--b {
  color: var(--mint);
}

.page-products .prod-finder__input:focus-visible ~ .prod-finder__label {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

.page-products .prod-finder__panels {
  min-width: 0;
}

.page-products .prod-finder__input:not(:checked) ~ .prod-finder__panels .prod-finder__panel--scene,
.page-products .prod-finder__input:checked ~ .prod-finder__panels .prod-finder__panel--code {
  display: none;
}

.page-products .prod-finder__intro {
  margin: 0 0 18px;
  max-width: 54ch;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--haze);
}

.page-products .prod-finder__steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .prod-finder__scenes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .prod-scene {
  padding: 16px 18px;
  border: 1px solid var(--grid);
  border-left: 3px solid var(--orange);
  border-radius: var(--radius);
  background: var(--glass);
}

.page-products .prod-scene__text {
  margin: 10px 0 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--haze);
}

.page-products .prod-scene__text a {
  color: var(--star);
  text-decoration: none;
  border-bottom: 1px solid var(--blue);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-products .prod-scene__text a:hover,
.page-products .prod-scene__text a:focus-visible {
  color: var(--mint);
  border-color: var(--mint);
}

.page-products .prod-finder__fallback {
  margin: clamp(26px, 4vw, 40px) 0 0;
  max-width: 66ch;
  padding: 18px 20px;
  border: 1px solid var(--grid);
  border-left: 3px solid var(--blue);
  border-radius: var(--radius);
  background: var(--night);
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--haze);
}

.page-products .prod-finder__fallback a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 232, 176, 0.4);
}

.page-products .prod-finder__fallback a:hover,
.page-products .prod-finder__fallback a:focus-visible {
  border-color: var(--mint);
}

/* ---------- cta ---------- */
.page-products .prod-cta {
  padding: 0 0 clamp(48px, 7vw, 96px);
}

.page-products .prod-cta__box {
  padding: clamp(26px, 4vw, 46px);
  border: 1px solid var(--blue);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 86% 12%, rgba(47, 232, 176, 0.14), transparent 58%),
    var(--night);
}

.page-products .prod-cta__title {
  margin: 0 0 12px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(1.2rem, 2.3vw, 1.7rem);
  line-height: 1.35;
  color: var(--star);
}

.page-products .prod-cta__text {
  margin: 0 0 20px;
  max-width: 60ch;
  font-size: 0.95rem;
  line-height: 1.82;
  color: var(--haze);
}

.page-products .prod-cta__text a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 232, 176, 0.4);
}

.page-products .prod-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- hover-less fallback ---------- */
@media (hover: none) {
  .page-products .prod-part {
    padding-bottom: 18px;
  }

  .page-products .prod-part__scene {
    position: static;
    margin-top: 12px;
    padding: 10px 0 0;
    background: none;
    border-top: 1px dashed var(--grid);
    border-radius: 0;
    opacity: 1;
    transform: none;
  }
}

/* ---------- tablet ---------- */
@media (min-width: 640px) {
  .page-products .prod-anatomy__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .prod-finder__scenes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- desktop ---------- */
@media (min-width: 760px) {
  .page-products .prod-group__intro {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(20px, 2.8vw, 34px);
    align-items: center;
  }

  .page-products .prod-group--alt .prod-group__intro {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-products .prod-group--alt .prod-group__media {
    grid-column: 2;
    grid-row: 1;
  }

  .page-products .prod-group--alt .prod-group__lead {
    grid-column: 1;
    grid-row: 1;
  }

  .page-products .prod-group__parts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

  .page-products .prod-finder__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-products .prod-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 4vw, 56px);
    align-items: end;
  }

  .page-products .prod-catalog__grid {
    grid-template-columns: var(--prod-idx-w) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 60px);
  }

  .page-products .prod-index {
    position: sticky;
    top: 84px;
    align-self: start;
  }

  .page-products .prod-index__list {
    flex-direction: column;
    gap: 4px;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-products .prod-index__link {
    display: flex;
    width: 100%;
    justify-content: flex-start;
    padding: 8px 12px;
    white-space: normal;
  }

  .page-products .prod-anatomy__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .prod-finder__scenes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-products .prod-index__link,
  .page-products .prod-part,
  .page-products .prod-part__scene,
  .page-products .prod-finder__knob,
  .page-products .prod-finder__opt {
    transition: none;
  }

  .page-products .prod-part__scene {
    transform: none;
  }

  .page-products .prod-part:hover .prod-part__scene,
  .page-products .prod-part:focus-within .prod-part__scene {
    transform: none;
  }
}