.page-products {
  --pi-line: rgba(201, 162, 75, 0.28);
  --pi-card: rgba(18, 59, 50, 0.68);
  --pi-panel: rgba(7, 26, 22, 0.74);
  background: var(--ink);
  color: var(--ivory);
  overflow-x: clip;
}

.page-products h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: clamp(1.55rem, 5vw, 2.5rem);
  line-height: 1.22;
  margin: 0 0 0.75rem;
  color: var(--ivory);
}

.page-products h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.1rem, 3.4vw, 1.35rem);
  line-height: 1.35;
  margin: 0 0 0.5rem;
  color: var(--gold-bright);
}

.page-products p {
  margin: 0 0 0.85rem;
  line-height: 1.75;
  color: var(--warm-gray);
}

.page-products a {
  color: var(--gold-bright);
}

/* ---------- 悬浮索引 ---------- */
.pi-index {
  display: none;
}

/* ---------- 首屏 ---------- */
.pi-hero {
  position: relative;
  padding: calc(var(--header-h) + 1.75rem) 0 2.75rem;
  background:
    radial-gradient(120% 90% at 88% 4%, rgba(111, 139, 140, 0.34), transparent 62%),
    radial-gradient(70% 60% at 10% 0%, rgba(47, 211, 179, 0.10), transparent 70%),
    linear-gradient(165deg, var(--haze-a) 0%, var(--ink) 58%, var(--ink-deep) 100%);
}

.pi-hero__grid {
  display: grid;
  gap: 2rem;
}

.pi-hero .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  padding: 0;
  margin: 0 0 1.1rem;
  font-size: 0.8rem;
  color: var(--warm-gray);
}

.pi-hero .breadcrumb__list li + li::before {
  content: "/";
  margin-right: 0.4rem;
  color: var(--gold);
}

.pi-eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--gold);
  text-transform: uppercase;
  margin: 0 0 0.85rem;
}

.pi-hero h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.85rem, 7vw, 3.4rem);
  line-height: 1.14;
  letter-spacing: -0.015em;
  margin: 0 0 1.1rem;
  color: var(--ivory);
}

.pi-hero__lede {
  max-width: 44ch;
  font-size: clamp(0.98rem, 2.6vw, 1.08rem);
  color: rgba(242, 234, 219, 0.86);
}

.pi-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.pi-facts {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
  margin: 1.9rem 0 0;
  padding: 1.15rem 0 0;
  border-top: 1px solid var(--pi-line);
}

.pi-facts b {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.15rem, 4.4vw, 1.5rem);
  color: var(--gold-bright);
  line-height: 1.1;
}

.pi-facts span {
  display: block;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--warm-gray);
  margin-top: 0.3rem;
}

.pi-hero__panel {
  position: relative;
  border: 1px solid var(--pi-line);
  background: var(--pi-panel);
  padding: 1.35rem 1.25rem 1.15rem;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.pi-hero__panel::before {
  content: "";
  position: absolute;
  top: -70px;
  right: -60px;
  width: 190px;
  height: 190px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 162, 75, 0.38), rgba(201, 162, 75, 0) 66%);
  pointer-events: none;
}

.pi-hero__panel::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 64px;
  height: 2px;
  background: var(--gold);
}

.pi-panel__label {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--gold);
  margin: 0 0 1rem;
}

.pi-panel__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.pi-panel__ver {
  font-size: 1.05rem;
  color: var(--gold-bright);
  letter-spacing: 0.02em;
}

.pi-panel__desc {
  font-size: 0.82rem;
  color: var(--warm-gray);
  text-align: right;
}

.pi-panel__note {
  margin: 1rem 0 0;
  font-size: 0.8rem;
  line-height: 1.65;
  color: rgba(169, 182, 177, 0.9);
}

/* ---------- 通用章节头 ---------- */
.pi-head {
  max-width: 62ch;
  margin-bottom: 1.9rem;
}

.pi-head__sub {
  font-size: 0.98rem;
  color: rgba(169, 182, 177, 0.95);
  margin-bottom: 0;
}

.pi-note {
  display: none;
}

/* ---------- 横向入口带 ---------- */
.pi-entry {
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
}

.pi-rail {
  display: flex;
  gap: 0.9rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 0.15rem 0.15rem 1.3rem;
  margin-bottom: 1.75rem;
  -webkit-overflow-scrolling: touch;
}

.pi-rail__card {
  scroll-snap-align: start;
  flex: 0 0 min(84%, 340px);
  display: flex;
  flex-direction: column;
  border: 1px solid var(--pi-line);
  background: linear-gradient(170deg, rgba(18, 59, 50, 0.92), rgba(11, 43, 36, 0.92));
  padding: 1.35rem 1.2rem 1.2rem;
  box-shadow: var(--shadow-soft);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

.pi-rail__card:hover,
.pi-rail__card:focus-within {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
  border-color: rgba(232, 199, 122, 0.6);
}

.pi-card__no {
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--electric);
  margin: 0 0 0.7rem;
}

.pi-rail__card p {
  font-size: 0.92rem;
  margin-bottom: 0.9rem;
}

.pi-card__fit {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
}

.pi-card__link {
  display: inline-block;
  margin-top: 0.6rem;
  font-size: 0.86rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-bottom: 1px solid var(--pi-line);
  padding-bottom: 0.15rem;
  align-self: flex-start;
}

.pi-card__link:hover,
.pi-card__link:focus-visible {
  color: var(--electric);
  border-bottom-color: var(--electric);
}

/* ---------- 图片 ---------- */
.pi-figure {
  margin: 0;
  border: 1px solid var(--line-soft);
  background: var(--ink-deep);
  overflow: hidden;
}

.pi-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-bottom: 1px solid var(--pi-line);
}

.pi-figure figcaption {
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--warm-gray);
  padding: 0.65rem 0.85rem;
}

/* ---------- 适配章节 ---------- */
.pi-fit {
  background: linear-gradient(155deg, #243a3d 0%, #123b32 46%, #0b2b24 100%);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.pi-fit__layout {
  display: grid;
  gap: 1.6rem;
}

.pi-matrix {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.pi-matrix__group {
  border: 1px solid var(--line-soft);
  background: rgba(7, 26, 22, 0.42);
  padding: 0.85rem 0.85rem 0.95rem;
}

.pi-matrix__title {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--gold);
  margin: 0 0 0.6rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--pi-line);
}

.pi-matrix__cells {
  display: grid;
  gap: 0.3rem;
}

.pi-cell {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  padding: 0.3rem 0.45rem;
  border: 1px solid transparent;
  color: var(--warm-gray);
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease), background 0.25s var(--ease);
}

.pi-cell em {
  font-style: normal;
  color: rgba(242, 234, 219, 0.92);
}

.pi-cell i {
  font-style: normal;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  color: rgba(169, 182, 177, 0.85);
}

.pi-cell:hover,
.pi-cell:focus-within {
  border-color: var(--electric);
  background: rgba(47, 211, 179, 0.09);
  color: var(--ivory);
}

.pi-steps-inline {
  list-style: none;
  counter-reset: pi-step;
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.pi-steps-inline li {
  counter-increment: pi-step;
  position: relative;
  padding-left: 2rem;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--warm-gray);
  border-left: 1px solid var(--line-soft);
  padding-bottom: 0.15rem;
}

.pi-steps-inline li::before {
  content: counter(pi-step, decimal-leading-zero);
  position: absolute;
  left: 0.45rem;
  top: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--gold);
}

/* ---------- 版本选择 ---------- */
.pi-versions {
  display: grid;
  gap: 0.9rem;
  margin-bottom: 1.6rem;
}

.pi-vcard {
  border: 1px solid var(--pi-line);
  background: var(--pi-card);
  padding: 1.2rem 1.1rem;
  border-top: 2px solid var(--gold);
}

.pi-vcard__no {
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--electric);
  margin: 0 0 0.6rem;
}

.pi-vcard p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

.pi-version__layout {
  display: grid;
  gap: 1.4rem;
}

.pi-dossiers {
  display: grid;
  gap: 0.75rem;
  align-content: start;
}

.pi-dossier {
  border: 1px solid var(--pi-line);
  background: rgba(7, 26, 22, 0.55);
}

.pi-dossier summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 1rem;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--ivory);
  transition: color 0.25s var(--ease), background 0.25s var(--ease);
}

.pi-dossier summary::-webkit-details-marker {
  display: none;
}

.pi-dossier summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--gold);
}

.pi-dossier[open] summary::after {
  content: "\2212";
}

.pi-dossier summary:hover,
.pi-dossier summary:focus-visible {
  color: var(--gold-bright);
  background: rgba(201, 162, 75, 0.06);
}

.pi-lines {
  margin: 0;
  padding: 0.35rem 1rem 1rem;
  border-top: 1px solid var(--line-soft);
}

.pi-lines__item {
  display: grid;
  grid-template-columns: 5.4rem minmax(0, 1fr);
  gap: 0.6rem;
  padding: 0.5rem 0;
  border-bottom: 1px dashed rgba(169, 182, 177, 0.16);
  font-size: 0.85rem;
}

.pi-lines__item:last-child {
  border-bottom: 0;
}

.pi-lines__item dt {
  color: var(--gold);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.pi-lines__item dd {
  margin: 0;
  color: rgba(242, 234, 219, 0.9);
  line-height: 1.6;
}

/* ---------- 对比表 ---------- */
.pi-compare {
  background: linear-gradient(180deg, var(--ink-2) 0%, var(--ink) 100%);
}

.pi-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--pi-line);
  background: rgba(7, 26, 22, 0.5);
}

.pi-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.pi-table__caption {
  caption-side: top;
  text-align: left;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--gold);
  padding: 0.75rem 0.9rem;
  border-bottom: 1px solid var(--line-soft);
}

.pi-table th,
.pi-table td {
  padding: 0.85rem 0.9rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-soft);
}

.pi-table thead th {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--gold-bright);
  background: rgba(201, 162, 75, 0.07);
}

.pi-table tbody th {
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--ivory);
  white-space: nowrap;
}

.pi-table tbody td {
  color: var(--warm-gray);
  line-height: 1.65;
}

.pi-table tbody tr {
  transition: background 0.25s var(--ease);
}

.pi-table tbody tr:hover {
  background: rgba(47, 211, 179, 0.07);
}

.pi-table tbody td:hover {
  color: var(--ivory);
  box-shadow: inset 0 -2px 0 var(--electric);
}

.pi-compare__foot {
  display: grid;
  gap: 1.25rem;
  margin-top: 1.6rem;
}

.pi-compare__text p {
  font-size: 0.94rem;
}

/* ---------- 流程 ---------- */
.pi-flow {
  background: var(--ink);
}

.pi-flow__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
  counter-reset: none;
}

.pi-flow__step {
  position: relative;
  border: 1px solid var(--line-soft);
  background: rgba(18, 59, 50, 0.5);
  padding: 1.15rem 1.1rem 1.05rem;
  border-left: 2px solid var(--gold);
}

.pi-flow__no {
  display: block;
  font-size: 1.35rem;
  color: rgba(232, 199, 122, 0.55);
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}

.pi-flow__step h3 {
  font-size: 1.02rem;
  color: var(--ivory);
}

.pi-flow__step p {
  font-size: 0.88rem;
  margin-bottom: 0;
}

/* ---------- 更新节奏 ---------- */
.pi-cadence {
  background: linear-gradient(165deg, #0f3229 0%, var(--ink-deep) 100%);
  border-top: 1px solid var(--line-soft);
}

.pi-cadence__layout {
  display: grid;
  gap: 1.5rem;
}

.pi-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.15rem;
  border-left: 1px solid var(--pi-line);
  display: grid;
  gap: 1.3rem;
}

.pi-timeline li {
  position: relative;
}

.pi-timeline li::before {
  content: "";
  position: absolute;
  left: -1.45rem;
  top: 0.45rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ink-deep);
  border: 1px solid var(--gold);
}

.pi-timeline li:first-child::before {
  background: var(--cinnabar);
  border-color: var(--cinnabar);
}

.pi-timeline__tag {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--electric);
  margin: 0 0 0.35rem;
}

.pi-timeline li p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* ---------- 场景 ---------- */
.pi-scene__grid {
  display: grid;
  gap: 0.9rem;
}

.pi-scene__card {
  border: 1px solid var(--line-soft);
  background: linear-gradient(175deg, rgba(18, 59, 50, 0.62), rgba(11, 43, 36, 0.62));
  padding: 1.25rem 1.1rem;
  display: flex;
  flex-direction: column;
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.pi-scene__card:hover,
.pi-scene__card:focus-within {
  border-color: rgba(201, 162, 75, 0.55);
  transform: translateY(-3px);
}

.pi-scene__tag {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--cinnabar);
  margin: 0 0 0.55rem;
}

.pi-scene__card p {
  font-size: 0.9rem;
}

.pi-scene__card .pi-card__link {
  margin-top: auto;
}

/* ---------- 行动区 ---------- */
.pi-cta {
  padding-bottom: clamp(2.5rem, 6vw, 4rem);
}

.pi-cta__box {
  display: grid;
  gap: 1.5rem;
  border: 1px solid var(--pi-line);
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(201, 162, 75, 0.14), transparent 60%),
    linear-gradient(120deg, rgba(18, 59, 50, 0.95), rgba(7, 26, 22, 0.95));
  padding: clamp(1.35rem, 4.5vw, 2.6rem);
}

.pi-cta__body p {
  font-size: 0.94rem;
  max-width: 56ch;
}

.pi-cta__contact {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.4rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line-soft);
}

.pi-cta__contact .mono {
  font-size: 0.92rem;
  color: var(--gold-bright);
  letter-spacing: 0.02em;
  word-break: break-all;
}

.pi-cta__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.pi-cta__textlink {
  font-size: 0.88rem;
  text-decoration: none;
  border-bottom: 1px solid var(--pi-line);
  padding-bottom: 0.12rem;
}

.pi-cta__textlink:hover,
.pi-cta__textlink:focus-visible {
  color: var(--electric);
  border-bottom-color: var(--electric);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .pi-matrix {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pi-versions {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .pi-flow__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pi-scene__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .pi-rail__card {
    flex-basis: 330px;
  }
}

@media (min-width: 900px) {
  .pi-hero__grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 0.82fr);
    align-items: start;
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .pi-hero {
    padding: calc(var(--header-h) + 3rem) 0 3.5rem;
  }

  .pi-fit__layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 2rem;
    align-items: start;
  }

  .pi-version__layout {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 1.75rem;
    align-items: start;
  }

  .pi-compare__foot {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    gap: 1.75rem;
    align-items: center;
  }

  .pi-flow__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .pi-cadence__layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    gap: 2rem;
    align-items: start;
  }

  .pi-cta__box {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: center;
    gap: 2rem;
  }
}

@media (min-width: 1024px) {
  .pi-matrix {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .pi-head {
    margin-bottom: 2.25rem;
  }

  .pi-note {
    display: block;
    position: absolute;
    left: 0.4rem;
    top: 3.4rem;
    font-size: 0.7rem;
    letter-spacing: 0.24em;
    color: rgba(201, 162, 75, 0.6);
  }

  .pi-entry .wrap {
    position: relative;
  }
}

@media (min-width: 1440px) {
  .pi-index {
    display: block;
    position: fixed;
    left: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    padding: 0.85rem 0.75rem;
    border-left: 1px solid var(--pi-line);
  }

  .pi-index__title {
    font-size: 0.62rem;
    letter-spacing: 0.26em;
    color: var(--gold);
    margin: 0 0 0.6rem;
  }

  .pi-index__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.45rem;
  }

  .pi-index__list a {
    display: block;
    font-size: 0.74rem;
    line-height: 1.4;
    color: rgba(169, 182, 177, 0.8);
    text-decoration: none;
    transition: color 0.25s var(--ease), padding-left 0.25s var(--ease);
  }

  .pi-index__list a:hover,
  .pi-index__list a:focus-visible {
    color: var(--gold-bright);
  }

  .pi-index__list a[aria-current="true"] {
    color: var(--electric);
    padding-left: 0.35rem;
    box-shadow: inset 2px 0 0 var(--electric);
  }
}
<<<END>>>