.page-products {
  --ps-rail-w: 220px;
  --ps-gap: clamp(24px, 4vw, 56px);
  display: block;
  background: var(--paper-000);
}

.page-products .ps-hero {
  padding-block: clamp(28px, 5vw, 56px) clamp(32px, 5vw, 64px);
  border-bottom: 1px solid var(--line-200);
}

.page-products .ps-hero__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  grid-template-columns: 1fr;
}

.page-products .ps-hero__lead {
  max-width: 620px;
}

.page-products .ps-hero .eyebrow {
  color: var(--jade-600);
  letter-spacing: .18em;
  margin: 0 0 14px;
}

.page-products .ps-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 5.4vw, 44px);
  line-height: 1.28;
  letter-spacing: -.01em;
  color: var(--ink-900);
  margin: 0 0 18px;
}

.page-products .ps-hero .lede {
  font-size: var(--fs-18);
  line-height: 1.85;
  color: var(--ink-700);
  margin: 0 0 24px;
}

.page-products .ps-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
}

.page-products .ps-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  border-top: 1px solid var(--line-200);
  padding-top: 20px;
}

.page-products .ps-stat {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-products .ps-stat__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-32);
  font-weight: 700;
  color: var(--gold-500);
  line-height: 1;
}

.page-products .ps-stat__label {
  font-size: var(--fs-14);
  color: var(--gray-500);
}

.page-products .ps-hero__media {
  margin: 0;
  border: 1px solid var(--line-200);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--mist-050);
  box-shadow: var(--shadow-m);
}

.page-products .ps-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .media__caption {
  padding: 12px 16px;
  font-size: var(--fs-12);
  color: var(--gray-500);
  border-top: 1px solid var(--line-200);
  background: var(--paper-000);
}

/* .page-products grid */
.page-products .ps-body {
  padding-block: clamp(32px, 5vw, 64px);
}

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

.page-products .ps-rail {
  border-left: 3px solid var(--jade-600);
  padding-left: 16px;
}

.page-products .ps-rail__title {
  font-size: var(--fs-12);
  letter-spacing: .2em;
  color: var(--gray-500);
  margin: 0 0 12px;
}

.page-products .ps-rail__list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.page-products .ps-rail__list .toc__link {
  display: inline-block;
  font-size: var(--fs-14);
  color: var(--ink-700);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-products .ps-rail__list .toc__link:hover,
.page-products .ps-rail__list .toc__link:focus-visible {
  color: var(--jade-600);
  border-bottom-color: var(--jade-400);
}

.page-products .ps-rail__list .toc__link.is-active {
  color: var(--jade-600);
  border-bottom-color: var(--jade-600);
  font-weight: 600;
}

.page-products .ps-rail__book {
  background: var(--gold-100);
  border-radius: var(--radius-s);
  padding: 14px 16px 16px;
  border-left: 4px solid var(--orange-500);
  box-shadow: var(--shadow-s);
}

.page-products .ps-rail__book .bookmark__label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--ink-900);
  margin-bottom: 6px;
}

.page-products .ps-rail__book-text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--ink-700);
}

.page-products a {
  color: var(--jade-600);
}

/* chapters */
.page-products .ps-chapter {
  scroll-margin-top: 96px;
  padding-block: clamp(28px, 4vw, 48px);
  border-top: 1px solid var(--line-200);
}

.page-products .ps-chapter:first-child {
  border-top: none;
  padding-top: 0;
}

.page-products .ps-chapter--mist {
  background: var(--mist-050);
  border-radius: var(--radius-m);
  padding-inline: clamp(16px, 3vw, 32px);
  border-top-color: transparent;
}

.page-products .ps-h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.35;
  color: var(--ink-900);
  margin: 0 0 14px;
  padding-left: 14px;
  border-left: 5px solid var(--gold-500);
}

.page-products .ps-chapter .prose {
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--ink-700);
  max-width: 40em;
  margin: 0 0 24px;
}

/* structure */
.page-products .ps-structure {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 28px;
}

.page-products .ps-structure__col {
  background: var(--paper-000);
  border: 1px solid var(--line-200);
  border-radius: var(--radius-m);
  padding: 18px 18px 20px;
}

.page-products .ps-structure__head {
  font-size: var(--fs-12);
  letter-spacing: .16em;
  color: var(--jade-600);
  margin: 0 0 14px;
}

.page-products .ps-tier-list,
.page-products .ps-net-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .ps-tier-list li,
.page-products .ps-net-list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--ink-700);
  padding-bottom: 9px;
  border-bottom: 1px dashed var(--line-200);
}

.page-products .ps-tier-list li:last-child,
.page-products .ps-net-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-products .ps-tier__code {
  flex: none;
  font-size: var(--fs-12);
  color: var(--ink-900);
  background: var(--gold-100);
  border-radius: 3px;
  padding: 2px 7px;
}

.page-products .ps-net__dot {
  flex: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  transform: translateY(1px);
}

.page-products .ps-net__dot--n1 { background: var(--jade-600); }
.page-products .ps-net__dot--n2 { background: var(--jade-400); }
.page-products .ps-net__dot--n3 { background: var(--gold-500); }

.page-products .ps-structure__note {
  margin: 16px 0 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--gray-500);
  border-top: 1px solid var(--line-200);
  padding-top: 14px;
}

/* figures */
.page-products .ps-figure {
  margin: 0 0 8px;
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--line-200);
  background: var(--paper-000);
}

.page-products .ps-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .ps-figure--wide { margin-top: 24px; }

.page-products .ps-figure--square {
  max-width: 360px;
  margin: 24px 0 0;
}

.page-products .ps-figure--dark {
  border-color: var(--ink-700);
  background: var(--ink-900);
}

.page-products .ps-figure--dark .media__caption {
  background: var(--ink-900);
  color: #C9D3DC;
  border-top-color: rgba(255,255,255,.14);
}

.page-products .ps-figure--bookmark {
  margin-top: 26px;
  max-width: 420px;
}

/* flow */
.page-products .ps-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  counter-reset: none;
}

.page-products .ps-flow__step {
  position: relative;
  padding: 0 0 26px 28px;
  border-left: 2px solid var(--line-200);
}

.page-products .ps-flow__step:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.page-products .ps-flow__step::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 2px;
  background: var(--orange-500);
  box-shadow: 0 0 0 3px var(--paper-000), 0 0 0 4px var(--line-200);
}

.page-products .ps-flow__step:last-child::before {
  background: var(--jade-600);
}

.page-products .ps-flow__num {
  display: block;
  font-size: var(--fs-12);
  letter-spacing: .2em;
  color: var(--gold-500);
  margin-bottom: 4px;
}

.page-products .ps-flow__title {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--fs-18);
  color: var(--ink-900);
  margin: 0 0 6px;
}

.page-products .ps-flow__step p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--ink-700);
  max-width: 42em;
}

/* table */
.page-products .table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line-200);
  border-radius: var(--radius-m);
  background: var(--paper-000);
  -webkit-overflow-scrolling: touch;
}

.page-products .ps-table {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
  font-size: var(--fs-14);
}

.page-products .ps-table__caption {
  caption-side: top;
  text-align: left;
  padding: 12px 16px;
  font-size: var(--fs-12);
  letter-spacing: .14em;
  color: var(--gray-500);
  background: var(--paper-000);
  border-bottom: 1px solid var(--line-200);
}

.page-products .ps-table th,
.page-products .ps-table td {
  text-align: left;
  padding: 11px 14px;
  border-bottom: 1px solid var(--line-200);
  vertical-align: top;
  line-height: 1.7;
}

.page-products .ps-table thead th {
  font-weight: 700;
  color: var(--paper-000);
  background: var(--ink-900);
  position: sticky;
  top: 0;
  z-index: 2;
  white-space: nowrap;
  border-bottom: none;
}

.page-products .ps-table tbody th[scope="row"] {
  font-weight: 600;
  color: var(--ink-900);
  background: var(--mist-050);
  position: sticky;
  left: 0;
  z-index: 1;
  white-space: nowrap;
}

.page-products .ps-table tbody tr:nth-child(even) td {
  background: rgba(234, 245, 242, .45);
}

.page-products .ps-table tbody tr:hover td,
.page-products .ps-table tbody tr:hover th[scope="row"] {
  background: var(--gold-100);
}

.page-products .ps-table tbody tr.is-active td {
  background: var(--gold-100);
}

.page-products .ps-table tbody tr.is-active th[scope="row"] {
  background: var(--gold-500);
  color: var(--paper-000);
}

.page-products .ps-table__hint {
  margin: 12px 0 0;
  font-size: var(--fs-12);
  color: var(--gray-500);
}

/* accordion */
.page-products .ps-accordion {
  display: grid;
  gap: 12px;
}

.page-products .ps-diff {
  border: 1px solid var(--line-200);
  border-radius: var(--radius-m);
  background: var(--paper-000);
  overflow: hidden;
  box-shadow: var(--shadow-s);
}

.page-products .ps-diff[open] {
  border-color: var(--jade-400);
}

.page-products .ps-diff__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-16);
  font-weight: 600;
  color: var(--ink-900);
}

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

.page-products .ps-diff__idx {
  flex: none;
  font-size: var(--fs-12);
  color: var(--paper-000);
  background: var(--jade-600);
  border-radius: 3px;
  padding: 3px 8px;
}

.page-products .ps-diff__name { flex: 1 1 auto; }

.page-products .ps-diff__sign {
  flex: none;
  position: relative;
  width: 14px;
  height: 14px;
}

.page-products .ps-diff__sign::before,
.page-products .ps-diff__sign::after {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
  background: var(--jade-600);
  transition: transform .18s var(--ease);
}

.page-products .ps-diff__sign::after {
  transform: rotate(90deg);
}

.page-products .ps-diff[open] .ps-diff__sign::after {
  transform: rotate(0deg);
}

.page-products .ps-diff__body {
  padding: 0 16px 16px 52px;
  border-top: 1px solid var(--line-200);
  padding-top: 14px;
}

.page-products .ps-diff__body p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--ink-700);
  max-width: 42em;
}

/* next links */
.page-products .ps-next-grid {
  margin-top: 8px;
}

.page-products .ps-next-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--paper-000);
  border: 1px solid var(--line-200);
  border-radius: var(--radius-m);
  padding: 20px 18px 22px;
  position: relative;
  transition: transform .18s var(--ease), box-shadow .18s var(--ease), border-color .18s var(--ease);
}

.page-products .ps-next-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 22px;
  height: 22px;
  background: linear-gradient(225deg, var(--mist-050) 50%, var(--gold-100) 50%);
  border-bottom-left-radius: 6px;
}

.page-products .ps-next-card:hover,
.page-products .ps-next-card:focus-visible {
  transform: translateY(-4px);
  box-shadow: var(--shadow-m);
  border-color: var(--jade-400);
}

.page-products .ps-next-card .card__kicker {
  font-size: var(--fs-12);
  letter-spacing: .14em;
  color: var(--jade-600);
}

.page-products .ps-next-card .card__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-18);
  color: var(--ink-900);
  margin: 8px 0 10px;
}

.page-products .ps-next-card .card__body {
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--ink-700);
  margin: 0 0 12px;
}

.page-products .ps-next-card .card__meta {
  font-size: var(--fs-12);
  color: var(--gray-500);
}

/* keep */
.page-products .ps-keep {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-products .ps-keep__main p {
  margin: 0 0 14px;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--ink-700);
  max-width: 40em;
}

.page-products .ps-keep__aside {
  background: var(--mist-050);
  border-left: 4px solid var(--jade-600);
  border-radius: var(--radius-s);
  padding: 18px;
}

.page-products .ps-keep__aside-title {
  margin: 0 0 12px;
  font-size: var(--fs-12);
  letter-spacing: .18em;
  color: var(--jade-600);
}

.page-products .ps-keep__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .ps-keep__list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: var(--fs-14);
  color: var(--ink-700);
}

.page-products .ps-keep__list .mono {
  flex: none;
  min-width: 62px;
  font-size: var(--fs-12);
  color: var(--ink-900);
  background: var(--gold-100);
  border-radius: 3px;
  padding: 3px 8px;
  text-align: center;
}

.page-products .ps-keep__foot {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-200);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--gray-500);
}

@media (min-width: 720px) {
  .page-products .ps-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .ps-structure {
    grid-template-columns: 1fr 1fr;
  }

  .page-products .ps-keep {
    grid-template-columns: 1.5fr 1fr;
    align-items: start;
  }

  .page-products .ps-rail__list {
    flex-direction: column;
    gap: 10px;
  }
}

@media (min-width: 1024px) {
  .page-products .ps-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: center;
  }

  .page-products .ps-body__grid {
    grid-template-columns: var(--ps-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .ps-rail {
    position: sticky;
    top: 96px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    padding-right: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .ps-next-card,
  .page-products .ps-diff__sign::after,
  .page-products .ps-rail__list .toc__link {
    transition: none;
  }

  .page-products .ps-next-card:hover,
  .page-products .ps-next-card:focus-visible {
    transform: none;
  }
}