.page-products {
  --pp-edge: 2px solid var(--line);
  --pp-shadow: 6px 6px 0 rgba(25, 211, 255, 0.14);
  --pp-shadow-warm: 6px 6px 0 rgba(255, 138, 61, 0.18);
  background: var(--ink);
  color: var(--mist);
}

.page-products .pp-head {
  position: relative;
  padding: clamp(2.6rem, 7vw, 5rem) 0 clamp(2rem, 4.6vw, 3.4rem);
  background:
    radial-gradient(circle at 88% 10%, rgba(25, 211, 255, 0.16), transparent 46%),
    linear-gradient(180deg, var(--ink) 0%, var(--deep) 100%);
  border-bottom: var(--pp-edge);
}

.page-products .pp-head::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange) 0 18%, var(--cyan) 18% 100%);
  opacity: 0.85;
}

.page-products .pp-head__title {
  margin: 0.55rem 0 1rem;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--paper);
  max-width: 18ch;
}

.page-products .pp-head__lede {
  max-width: 56ch;
  font-size: clamp(0.95rem, 1.7vw, 1.06rem);
  line-height: 1.85;
  color: var(--dim-strong);
}

.page-products .pp-head__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.6rem;
}

.page-products .pp-index {
  position: sticky;
  top: 0;
  z-index: 15;
  background: rgba(4, 17, 28, 0.95);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.page-products .pp-index__inner {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.7rem 0;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-products .pp-index__label {
  flex: 0 0 auto;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--amber);
  text-transform: uppercase;
}

.page-products .pp-index__list {
  display: flex;
  gap: 0.3rem;
  margin: 0;
  padding: 0;
  list-style: none;
  flex: 0 0 auto;
}

.page-products .pp-index__link {
  display: inline-block;
  padding: 0.42rem 0.78rem;
  border: 1px solid transparent;
  border-radius: 2px;
  color: var(--dim-strong);
  font-size: 0.84rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.page-products .pp-index__link:hover,
.page-products .pp-index__link:focus-visible {
  color: var(--cyan-soft);
  border-color: var(--line);
  outline: none;
}

.page-products .pp-index__link.is-active {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-products .pp-section {
  position: relative;
  padding: clamp(2.6rem, 6vw, 4.8rem) 0;
}

.page-products .pp-section__head {
  max-width: 62ch;
  margin-bottom: clamp(1.5rem, 3vw, 2.4rem);
}

.page-products .pp-section__title {
  margin: 0.5rem 0 0.85rem;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  line-height: 1.22;
  color: var(--paper);
}

.page-products .pp-section__note {
  margin: 0;
  font-size: clamp(0.93rem, 1.5vw, 1rem);
  line-height: 1.85;
  color: var(--dim-strong);
}

.page-products .section--paper .pp-section__title {
  color: var(--ink);
}

.page-products .section--paper .pp-section__note {
  color: var(--navy);
}

.page-products .pp-section__more {
  margin: 1.8rem 0 0;
}

.page-products .pp-figure {
  margin: 1.8rem 0 0;
}

.page-products .pp-figure--flush {
  margin-top: 0;
}

.page-products .tree {
  border-top: 1px solid var(--line);
  padding-top: clamp(1.3rem, 3vw, 2rem);
}

.page-products .tree__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .tree__branch {
  position: relative;
  padding: 1.4rem 1.2rem 1.5rem;
  background: var(--deep);
  border: 2px solid var(--line);
  border-left: 4px solid var(--cyan);
  box-shadow: var(--pp-shadow);
}

.page-products .tree__branch:nth-child(2) {
  border-left-color: var(--amber);
}

.page-products .tree__branch:nth-child(3) {
  border-left-color: var(--orange);
}

.page-products .tree__node {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  margin-bottom: 0.8rem;
  border-radius: 2px;
  background: var(--orange);
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 700;
}

.page-products .tree__title {
  margin: 0 0 0.55rem;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--paper);
}

.page-products .tree__text {
  margin: 0 0 1.1rem;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--dim-strong);
}

.page-products .zone-list {
  display: grid;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .zone-list__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
  padding: 1.1rem 1.15rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 4px solid var(--orange);
}

.page-products .zone-list__num {
  padding-top: 0.15rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--navy);
}

.page-products .zone-list__item h3 {
  margin: 0 0 0.4rem;
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--ink);
}

.page-products .zone-list__item p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--navy);
}

.page-products .accordion {
  display: grid;
  gap: 0.8rem;
}

.page-products .accordion__item {
  border: 2px solid var(--line);
  background: var(--navy);
  transition: border-color 0.2s;
}

.page-products .accordion__item[open] {
  border-color: var(--cyan);
  background: linear-gradient(160deg, var(--navy) 0%, var(--deep) 100%);
}

.page-products .accordion__summary {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 1.15rem;
  cursor: pointer;
  list-style: none;
  -webkit-user-select: none;
  user-select: none;
}

.page-products .accordion__summary::-webkit-details-marker {
  display: none;
}

.page-products .accordion__summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-products .accordion__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--cyan);
}

.page-products .accordion__item[open] .accordion__summary::after {
  content: "−";
  color: var(--orange);
}

.page-products .accordion__num {
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-products .accordion__label {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--paper);
}

.page-products .accordion__body {
  padding: 0 1.15rem 1.2rem;
  font-size: 0.92rem;
  line-height: 1.82;
  color: var(--dim-strong);
}

.page-products .accordion__body p {
  margin: 0 0 0.6rem;
}

.page-products .accordion__body p:last-child {
  margin-bottom: 0;
}

.page-products .switch-track {
  display: grid;
  gap: 1.1rem;
}

.page-products .switch-step {
  position: relative;
  padding: 1.3rem 1.15rem 1.35rem 1.4rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 4px solid var(--cyan);
}

.page-products .switch-step__num {
  display: inline-block;
  margin-bottom: 0.65rem;
  padding: 0.2rem 0.55rem;
  border-radius: 2px;
  background: var(--ink);
  color: var(--orange);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
}

.page-products .switch-step h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--ink);
}

.page-products .switch-step p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--navy);
}

.page-products .version-card {
  display: grid;
  gap: 1.3rem;
  padding: clamp(1.3rem, 3vw, 2rem);
  background: linear-gradient(155deg, var(--navy) 0%, var(--deep) 70%);
  border: 2px solid var(--line);
  box-shadow: 8px 8px 0 rgba(255, 138, 61, 0.14);
}

.page-products .version-card__code {
  display: inline-block;
  padding-bottom: 0.45rem;
  border-bottom: 1px dashed var(--line);
  font-size: clamp(1.35rem, 3.2vw, 1.95rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-products .version-card__list {
  display: grid;
  gap: 0.9rem;
  margin: 0;
}

.page-products .version-card__row {
  display: grid;
  gap: 0.22rem;
}

.page-products .version-card__row dt {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--cyan-soft);
}

.page-products .version-card__row dd {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.75;
  color: var(--dim-strong);
}

.page-products .version-card .btn {
  justify-self: start;
}

.page-products .legend {
  display: grid;
  gap: 0.8rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .legend__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.55rem;
  padding: 0.95rem 1rem;
  background: var(--paper);
  border: 1px solid var(--line);
}

.page-products .legend__item p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--navy);
}

.page-products .legend__item .tag {
  justify-self: start;
}

.page-products .pp-next {
  padding: clamp(1.8rem, 4vw, 2.6rem) 0;
  background: var(--deep);
  border-top: var(--pp-edge);
}

.page-products .pp-next__inner {
  display: grid;
  gap: 1.2rem;
}

.page-products .pp-next__text {
  margin: 0;
  max-width: 58ch;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--dim-strong);
}

.page-products .pp-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.page-products .pp-next__actions .btn {
  flex: 0 0 auto;
}

@media (max-width: 480px) {
  .page-products .pp-head__title {
    max-width: none;
  }

  .page-products .zone-list__item {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }

  .page-products .accordion__summary {
    flex-wrap: wrap;
    row-gap: 0.35rem;
  }

  .page-products .pp-next__actions .btn {
    flex: 1 1 100%;
    text-align: center;
  }
}

@media (min-width: 760px) {
  .page-products .pp-next__inner {
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 2rem;
  }

  .page-products .tree__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.2rem;
  }

  .page-products .switch-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.2rem;
  }

  .page-products .legend__item {
    grid-template-columns: minmax(8.5rem, auto) 1fr;
    align-items: start;
    gap: 1rem;
  }

  .page-products .pp-desktop,
  .page-products .pp-labels {
    align-items: start;
  }

  .page-products .pp-figure--flush {
    margin-top: 0;
  }
}

@media (min-width: 1024px) {
  .page-products .pp-head__lede {
    font-size: 1.06rem;
  }

  .page-products .pp-desktop {
    grid-template-columns: 7fr 5fr;
    gap: 2rem;
  }

  .page-products .pp-labels {
    grid-template-columns: 7fr 5fr;
    gap: 2rem;
  }

  .page-products .version-card {
    grid-template-columns: minmax(10rem, 14rem) 1fr;
    grid-template-areas:
      "code list"
      "code action";
    align-items: start;
    column-gap: 2rem;
  }

  .page-products .version-card__code {
    grid-area: code;
    border-bottom: none;
    border-left: 3px solid var(--orange);
    padding: 0 0 0 0.9rem;
  }

  .page-products .version-card__list {
    grid-area: list;
  }

  .page-products .version-card .btn {
    grid-area: action;
    margin-top: 0.4rem;
  }
}
<<<END>>>