.page-products {
  --pp-card: var(--ink-800);
  --pp-soft: rgba(13, 33, 56, 0.62);
  padding-bottom: 72px;
  background:
    radial-gradient(1100px 520px at 84% -8%, rgba(27, 94, 140, 0.42), transparent 62%),
    var(--ink-900);
  color: var(--frost);
  overflow-x: hidden;
}

.page-products .shell {
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.page-products .breadcrumb {
  padding-top: 18px;
}

/* ---------- hero ---------- */
.page-products .pp-hero {
  position: relative;
  padding: 22px 0 clamp(36px, 6vw, 76px);
  border-bottom: 2px solid var(--line);
}

.page-products .pp-hero::after {
  content: "";
  position: absolute;
  right: -160px;
  top: -110px;
  width: 420px;
  height: 420px;
  border: 2px solid rgba(69, 242, 214, 0.16);
  border-radius: 50%;
  box-shadow: inset 0 0 0 58px rgba(69, 242, 214, 0.035);
  pointer-events: none;
}

.page-products .pp-hero__grid {
  position: relative;
  display: grid;
  gap: 18px;
}

.page-products .pp-hero__eyebrow {
  color: var(--cyan-400);
  letter-spacing: 0.16em;
}

.page-products .pp-hero__title {
  margin: 0;
  font-size: clamp(2rem, 6.4vw, 4.4rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--frost);
}

.page-products .pp-hero__lede {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(1rem, 1.4vw, 1.08rem);
  line-height: 1.8;
  color: var(--ice);
}

.page-products .pp-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .pp-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-products .pp-hero__meta span {
  color: var(--cyan-400);
  font-size: 0.95rem;
}

/* ---------- section frame ---------- */
.page-products .pp-section {
  padding: clamp(44px, 7vw, 84px) 0;
}

.page-products .pp-section--alt {
  background: var(--ink-800);
  border-top: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
}

.page-products .pp-section__head {
  display: grid;
  gap: 12px;
  max-width: 76ch;
  margin-bottom: clamp(24px, 3vw, 38px);
}

.page-products .pp-section__idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-products .pp-section h2 {
  margin: 0;
  font-size: clamp(1.55rem, 3.4vw, 2.5rem);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-products .pp-section__note,
.page-products .pp-lede {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--ice);
}

.page-products .pp-lede {
  margin-top: 14px;
}

.page-products .pp-note {
  margin: 18px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--cyan-400);
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-products .pp-note a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- skill tree ---------- */
.page-products .pp-tree {
  position: relative;
  margin: 0;
  padding: 0 0 0 34px;
  list-style: none;
}

.page-products .pp-tree::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan-400), var(--line) 72%);
}

.page-products .pp-tree__item {
  position: relative;
  margin-bottom: 14px;
}

.page-products .pp-tree__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 24px;
  width: 13px;
  height: 13px;
  border: 2px solid var(--cyan-400);
  background: var(--ink-900);
  transform: rotate(45deg);
  box-shadow: 0 0 0 4px rgba(69, 242, 214, 0.1);
}

.page-products .pp-tree__body {
  position: relative;
  padding: 18px 18px 20px;
  border: 2px solid var(--line);
  background: var(--pp-soft);
  box-shadow: var(--shadow-hard);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.page-products .pp-tree__body:hover,
.page-products .pp-tree__body:focus-within {
  border-color: var(--cyan-400);
  transform: translate(-2px, -2px);
}

.page-products .pp-tree__idx {
  display: inline-block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  color: var(--orange-500);
}

.page-products .pp-tree__title {
  margin: 0 0 8px;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--frost);
}

.page-products .pp-tree__desc {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-products .pp-tree__link {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 2px solid var(--line);
  padding-bottom: 2px;
}

.page-products .pp-tree__link:hover,
.page-products .pp-tree__link:focus-visible {
  border-bottom-color: var(--cyan-400);
}

/* ---------- split layout ---------- */
.page-products .pp-split {
  display: grid;
  gap: clamp(22px, 3.5vw, 48px);
  align-items: start;
}

.page-products .pp-split__text {
  min-width: 0;
}

.page-products .pp-figure {
  margin: 0;
  min-width: 0;
}

.page-products .pp-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 2px solid var(--line);
  background: var(--ink-900);
  box-shadow: var(--shadow-hard);
}

.page-products .pp-figure--tall img {
  aspect-ratio: 3 / 4;
}

.page-products .pp-figure--wide img {
  aspect-ratio: 2 / 1;
}

.page-products .pp-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--mist);
}

.page-products .pp-split__text .pp-figure {
  margin-top: 24px;
}

/* ---------- steps ---------- */
.page-products .pp-steps {
  counter-reset: ppstep;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-products .pp-step {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  padding: 14px 16px;
  border: 2px solid var(--line);
  background: var(--pp-soft);
}

.page-products .pp-step::before {
  counter-increment: ppstep;
  content: counter(ppstep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--cyan-400);
  padding-top: 2px;
}

.page-products .pp-step h3 {
  margin: 0 0 5px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--frost);
}

.page-products .pp-step p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- chips ---------- */
.page-products .pp-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .pp-chip {
  padding: 6px 11px;
  border: 2px solid var(--line);
  background: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--ice);
}

/* ---------- scenes ---------- */
.page-products .pp-scenes {
  display: grid;
  gap: 14px;
}

.page-products .pp-scene {
  position: relative;
  padding: 20px 18px 22px;
  border: 2px solid var(--line);
  background: var(--ink-900);
  transition: border-color 0.18s ease;
}

.page-products .pp-scene:hover {
  border-color: var(--cyan-400);
}

.page-products .pp-scene__role {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  color: var(--orange-500);
}

.page-products .pp-scene h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--frost);
}

.page-products .pp-scene p:last-child {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.74;
  color: var(--mist);
}

/* ---------- version switch ---------- */
.page-products .pp-switch {
  position: relative;
  margin-top: clamp(26px, 4vw, 44px);
  padding: 18px;
  border: 2px solid var(--line);
  background: var(--ink-900);
  box-shadow: var(--shadow-glow);
}

.page-products .pp-switch__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-products .pp-switch__tabs {
  display: inline-flex;
  border: 2px solid var(--line);
}

.page-products .pp-switch__tab {
  display: block;
  padding: 9px 18px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--mist);
  cursor: pointer;
  transition: background 0.16s ease, color 0.16s ease;
}

.page-products .pp-switch__tab:hover {
  color: var(--cyan-400);
}

.page-products #ver-web:checked ~ .pp-switch__tabs .pp-switch__tab--web,
.page-products #ver-app:checked ~ .pp-switch__tabs .pp-switch__tab--app {
  background: var(--cyan-400);
  color: var(--ink-900);
}

.page-products #ver-web:focus-visible ~ .pp-switch__tabs,
.page-products #ver-app:focus-visible ~ .pp-switch__tabs {
  outline: 2px solid var(--cyan-200);
  outline-offset: 3px;
}

.page-products .pp-switch__panel {
  display: none;
}

.page-products #ver-web:checked ~ .pp-switch__panel--web,
.page-products #ver-app:checked ~ .pp-switch__panel--app {
  display: block;
}

.page-products .pp-switch__panel ul {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .pp-switch__panel li {
  display: grid;
  grid-template-columns: 16px minmax(0, 1fr);
  gap: 10px;
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--ice);
}

.page-products .pp-switch__panel li::before {
  content: "▸";
  color: var(--cyan-400);
  font-size: 0.8rem;
  line-height: 1.9;
}

/* ---------- closing ---------- */
.page-products .pp-next {
  padding: clamp(24px, 4vw, 40px);
  border: 2px solid var(--line);
  background:
    linear-gradient(135deg, rgba(27, 94, 140, 0.38), rgba(7, 20, 38, 0.9) 60%);
  box-shadow: var(--shadow-hard);
}

.page-products .pp-next h2 {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  line-height: 1.2;
  font-weight: 800;
}

.page-products .pp-next > p {
  margin: 0;
  max-width: 62ch;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--ice);
}

.page-products .pp-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-products .pp-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

.page-products .pp-next__links a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 2px solid var(--line);
  padding-bottom: 2px;
}

.page-products .pp-next__links a:hover,
.page-products .pp-next__links a:focus-visible {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}

/* ---------- responsive ---------- */
@media (min-width: 700px) {
  .page-products .pp-scenes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-products .pp-switch {
    padding: 22px 24px;
  }
}

@media (min-width: 900px) {
  .page-products .pp-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    column-gap: clamp(28px, 4vw, 64px);
    align-items: start;
  }

  .page-products .pp-hero__eyebrow {
    grid-column: 1 / -1;
  }

  .page-products .pp-hero__title {
    grid-column: 1;
  }

  .page-products .pp-hero__lede,
  .page-products .pp-hero__actions {
    grid-column: 2;
  }

  .page-products .pp-hero__meta {
    grid-column: 1 / -1;
    margin-top: 14px;
  }

  .page-products .pp-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
    column-gap: clamp(30px, 4.5vw, 64px);
  }

  .page-products .pp-split--reverse {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
  }

  .page-products .pp-figure {
    margin-top: 12px;
  }

  .page-products .pp-tree {
    padding-left: 52px;
  }

  .page-products .pp-tree::before {
    left: 19px;
  }

  .page-products .pp-tree__item::before {
    left: -42px;
    top: 28px;
  }

  .page-products .pp-tree__body {
    padding: 22px 24px 24px;
  }

  .page-products .pp-tree__body::after {
    content: "";
    position: absolute;
    left: -26px;
    top: 30px;
    width: 24px;
    height: 2px;
    background: var(--line);
  }

  .page-products .pp-next {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.8fr);
    gap: 10px clamp(24px, 4vw, 56px);
    align-items: start;
  }

  .page-products .pp-next h2,
  .page-products .pp-next > p {
    grid-column: 1;
  }

  .page-products .pp-next__actions,
  .page-products .pp-next__links {
    grid-column: 2;
  }

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

@media (min-width: 1180px) {
  .page-products .pp-tree {
    padding-left: 64px;
  }

  .page-products .pp-tree::before {
    left: 25px;
  }

  .page-products .pp-tree__item::before {
    left: -46px;
  }

  .page-products .pp-tree__body::after {
    left: -30px;
    width: 28px;
  }
}
<<<END>>>