.page-products {
  --pt-line: rgba(36, 26, 51, 0.14);
  --pt-line-strong: rgba(36, 26, 51, 0.28);
  --pt-ink-soft: rgba(26, 26, 31, 0.72);
  --pt-paper-soft: rgba(245, 240, 230, 0.78);
  --pt-gold-hover: #C89434;
  --pt-paper-line: rgba(245, 240, 230, 0.18);
}

.page-products .pt-hero {
  padding: clamp(18px, 4vw, 40px) 0 clamp(40px, 7vw, 88px);
}

.page-products .pt-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(24px, 4vw, 44px);
}

.page-products .pt-hero__aside {
  min-width: 0;
}

.page-products .pt-toc {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  border-top: 1px solid var(--pt-line);
}

.page-products .pt-toc li {
  border-bottom: 1px solid var(--pt-line);
}

.page-products .pt-toc a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-height: 44px;
  padding: 11px 0;
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  transition: color 0.18s ease;
}

.page-products .pt-toc a:hover,
.page-products .pt-toc a:focus-visible {
  color: var(--cyan-deep);
  text-decoration: underline;
  text-decoration-color: var(--gold);
  text-underline-offset: 4px;
}

.page-products .pt-toc a span {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold-deep);
  flex: none;
}

.page-products .pt-hero__main {
  min-width: 0;
}

.page-products .pt-hero__main h1 {
  margin: 0 0 clamp(18px, 2.4vw, 28px);
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(34px, 6.2vw, 84px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--plum-ink);
  max-width: 14em;
  overflow-wrap: anywhere;
}

.page-products .pt-hero__lead {
  margin: 0 0 clamp(20px, 3vw, 28px);
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 1.85;
  color: var(--ink);
  max-width: 34em;
}

.page-products .pt-hero .cs-notice {
  margin-top: 4px;
}

.page-products .pt-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: clamp(16px, 2.4vw, 24px);
  padding-top: 6px;
}

.page-products .pt-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(24px, 3.2vw, 36px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--plum-ink);
}

.page-products .cs-prose {
  max-width: 36em;
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-products .pt-note {
  margin: clamp(20px, 3vw, 28px) 0 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--pt-ink-soft);
  max-width: 44em;
  padding-top: 16px;
  border-top: 1px solid var(--pt-line);
}

.page-products .pt-figure {
  margin: 0 0 clamp(24px, 4vw, 40px);
  min-width: 0;
}

.page-products .pt-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 2px 18px 2px 2px;
  background: var(--paper-card);
}

.page-products .pt-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--pt-ink-soft);
  letter-spacing: 0.01em;
}

.page-products .pt-tree {
  margin-top: clamp(8px, 2vw, 16px);
}

.page-products .pt-rail {
  display: grid;
  gap: 10px;
}

.page-products .pt-node {
  -webkit-appearance: none;
  appearance: none;
  display: grid;
  gap: 3px;
  width: 100%;
  min-height: 84px;
  padding: 14px 16px;
  text-align: left;
  background: var(--paper-card);
  color: var(--plum-ink);
  border: 1px solid transparent;
  border-left: 3px solid var(--cyan-deep);
  border-radius: var(--radius-organic);
  font-family: var(--font-body);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.page-products .pt-node:hover {
  border-color: var(--gold);
  border-left-color: var(--gold);
}

.page-products .pt-node:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-products .pt-node[aria-selected="true"] {
  background: var(--plum);
  border-color: var(--plum);
  border-left-color: var(--gold);
  color: var(--paper);
}

.page-products .pt-node__stage {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gold-deep);
  transition: color 0.2s ease;
}

.page-products .pt-node[aria-selected="true"] .pt-node__stage {
  color: var(--gold);
}

.page-products .pt-node__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--plum-soft);
  transition: color 0.2s ease;
}

.page-products .pt-node[aria-selected="true"] .pt-node__num {
  color: var(--paper);
  opacity: 0.8;
}

.page-products .pt-node__name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 500;
  letter-spacing: 0.01em;
  line-height: 1.3;
}

.page-products .pt-panels {
  margin-top: clamp(22px, 3.4vw, 34px);
  border-top: 2px solid var(--plum-ink);
}

.page-products .pt-panel {
  padding: clamp(18px, 2.6vw, 26px) 0;
  border-bottom: 1px solid var(--pt-line);
}

.page-products .pt-panel[hidden] {
  display: none;
}

.page-products .pt-panel__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold-deep);
}

.page-products .pt-panel__do {
  margin: 0 0 14px;
  font-size: clamp(16px, 1.3vw, 18px);
  line-height: 1.85;
  color: var(--ink);
  max-width: 40em;
}

.page-products .pt-panel__meta {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--pt-ink-soft);
}

.page-products .pt-panel__meta:last-child {
  margin-bottom: 0;
}

.page-products .pt-panel__meta span {
  display: inline-block;
  margin-right: 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold-deep);
  border-bottom: 1px solid var(--gold);
  padding-bottom: 1px;
}

.page-products .pt-cycle {
  background: var(--cyan-soft);
}

.page-products .pt-cycle__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-products .pt-cycle .pt-figure {
  margin-bottom: 0;
}

.page-products .pt-figure--wheel img {
  background: var(--paper);
}

.page-products .pt-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-products .pt-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--pt-line-strong);
}

.page-products .pt-step:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-products .pt-step__num {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--plum);
  padding-top: 3px;
}

.page-products .pt-step h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 500;
  line-height: 1.35;
  color: var(--plum-ink);
}

.page-products .pt-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

.page-products .pt-legend {
  list-style: none;
  margin: 0 0 clamp(24px, 4vw, 36px);
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .pt-legend__item {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--pt-ink-soft);
}

.page-products .pt-legend__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--plum-soft);
}

.page-products .pt-legend__item--new::before {
  background: var(--cyan-deep);
}

.page-products .pt-legend__item--adjust::before {
  background: var(--gold);
}

.page-products .pt-legend__item--archive::before {
  background: var(--plum-soft);
}

.page-products .pt-diff {
  border-top: 2px solid var(--plum-ink);
}

.page-products .pt-diff__row {
  position: relative;
  padding: clamp(16px, 2.4vw, 22px) 0 clamp(16px, 2.4vw, 22px) 16px;
  border-bottom: 1px solid var(--pt-line);
}

.page-products .pt-diff__row::before {
  content: "";
  position: absolute;
  left: 0;
  top: clamp(16px, 2.4vw, 22px);
  bottom: clamp(16px, 2.4vw, 22px);
  width: 3px;
  border-radius: 2px;
  background: var(--plum-soft);
}

.page-products .pt-diff__row--new::before {
  background: var(--cyan-deep);
}

.page-products .pt-diff__row--adjust::before {
  background: var(--gold);
}

.page-products .pt-diff__row--archive::before {
  background: var(--plum-soft);
}

.page-products .pt-diff__tag {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold-deep);
}

.page-products .pt-diff__row--new .pt-diff__tag {
  color: var(--cyan-deep);
}

.page-products .pt-diff__row--archive .pt-diff__tag {
  color: var(--plum);
}

.page-products .pt-diff__cells {
  display: grid;
  gap: 14px;
}

.page-products .pt-diff__cell {
  min-width: 0;
}

.page-products .pt-diff__ver {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--plum);
}

.page-products .pt-diff__cell p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-products .pt-diff__cell--old p {
  color: var(--pt-ink-soft);
}

.page-products .pt-paths__grid {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
}

.page-products .pt-path-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(18px, 2.6vw, 26px);
}

.page-products .pt-path {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding-bottom: clamp(18px, 2.6vw, 26px);
  border-bottom: 1px solid var(--pt-line);
}

.page-products .pt-path:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-products .pt-path__num {
  font-family: var(--font-mono);
  font-size: 24px;
  line-height: 1.1;
  letter-spacing: 0.04em;
  color: var(--plum-soft);
}

.page-products .pt-path h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 500;
  line-height: 1.35;
  color: var(--plum-ink);
}

.page-products .pt-path p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
  max-width: 34em;
}

.page-products .pt-figure--scene {
  margin-bottom: 0;
}

.page-products .pt-start {
  background: var(--plum-ink);
  color: var(--paper);
}

.page-products .pt-start__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.page-products .pt-start .pt-figure {
  margin-bottom: 0;
}

.page-products .pt-figure--index img {
  border-radius: 2px 18px 2px 2px;
  border: 1px solid var(--pt-paper-line);
}

.page-products .pt-start__mark {
  display: inline-block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-products .pt-start h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-products .pt-start__lead {
  margin: 0 0 clamp(22px, 3vw, 30px);
  font-size: 16px;
  line-height: 1.85;
  color: var(--pt-paper-soft);
  max-width: 34em;
}

.page-products .pt-start__way {
  padding: 16px 0;
  border-top: 1px solid var(--pt-paper-line);
}

.page-products .pt-start__way h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 500;
  color: var(--gold);
  letter-spacing: 0.01em;
}

.page-products .pt-start__way p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--pt-paper-soft);
  max-width: 36em;
}

.page-products .pt-start .cs-btn--primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  margin-top: clamp(22px, 3vw, 30px);
  padding: 12px 28px;
  background: var(--gold);
  border: 1px solid var(--gold);
  color: var(--plum-ink);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-radius: var(--radius-organic);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.page-products .pt-start .cs-btn--primary:hover,
.page-products .pt-start .cs-btn--primary:focus-visible {
  background: var(--pt-gold-hover);
  border-color: var(--pt-gold-hover);
  color: var(--plum-ink);
}

.page-products .pt-start .cs-btn--primary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

@media (min-width: 760px) {
  .page-products .pt-rail {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    padding-bottom: 34px;
  }

  .page-products .pt-node:nth-child(2n) {
    margin-top: 30px;
  }

  .page-products .pt-legend {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px 20px;
  }
}

@media (min-width: 880px) {
  .page-products .pt-hero__grid {
    grid-template-columns: minmax(0, 32fr) minmax(0, 68fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-products .pt-cycle__grid {
    grid-template-columns: minmax(0, 38fr) minmax(0, 62fr);
    align-items: start;
  }

  .page-products .pt-diff__cells {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 24px;
  }

  .page-products .pt-paths__grid {
    grid-template-columns: minmax(0, 58fr) minmax(0, 42fr);
    align-items: start;
  }

  .page-products .pt-start__grid {
    grid-template-columns: minmax(0, 40fr) minmax(0, 60fr);
  }
}