.page-products {
  --pr-line: #2B3648;
  --pr-line-soft: rgba(43, 54, 72, 0.55);
  --pr-stand: rgba(16, 32, 58, 0.72);
  --pr-card: linear-gradient(180deg, rgba(16, 32, 58, 0.78), rgba(8, 19, 38, 0.86));
  --pr-gap: clamp(18px, 2.4vw, 30px);
  color: var(--snow);
  background:
    radial-gradient(circle at 84% -8%, rgba(99, 245, 214, 0.10), transparent 55%),
    radial-gradient(circle at 4% 6%, rgba(57, 196, 110, 0.08), transparent 44%);
}

.page-products .pr-crumb-bar {
  padding: 18px 0 0;
}

.page-products .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-13);
  color: var(--note);
}

.page-products .breadcrumb a {
  color: var(--note);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--ease), color var(--ease);
}

.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus-visible {
  color: var(--snow);
  border-bottom-color: var(--turf);
}

.page-products .breadcrumb [aria-current="page"] {
  color: var(--snow);
}

.page-products .pr-kicker {
  margin: 0;
  font-family: var(--mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--turf);
}

/* ---------- hero ---------- */

.page-products .pr-hero {
  padding: clamp(24px, 4vw, 52px) 0 clamp(36px, 5vw, 68px);
}

.page-products .pr-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pr-gap);
}

.page-products .pr-hero h1 {
  margin: 14px 0 0;
  font-family: var(--sans);
  font-size: clamp(34px, 6.2vw, 76px);
  font-weight: 800;
  line-height: 1.03;
  letter-spacing: -0.035em;
  color: var(--snow);
}

.page-products .pr-lede {
  margin: 20px 0 0;
  max-width: 36em;
  font-size: var(--fs-17);
  line-height: 1.85;
  color: var(--note);
}

.page-products .pr-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-products .pr-hero-card {
  border: 1px solid var(--pr-line);
  border-radius: var(--radius);
  background: var(--pr-card);
  box-shadow: var(--shadow-ground);
  padding: 22px 20px;
}

.page-products .pr-card-kicker {
  margin: 0;
  font-family: var(--mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--clay);
  text-transform: uppercase;
}

.page-products .pr-card-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .pr-card-list li {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--pr-line-soft);
  font-size: var(--fs-13);
  line-height: 1.7;
  color: var(--note);
}

.page-products .pr-card-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-products .pr-card-list b {
  font-family: var(--mono);
  font-size: var(--fs-13);
  font-weight: 600;
  color: var(--cyan);
}

.page-products .pr-card-foot {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--pr-line-soft);
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--note);
}

.page-products .pr-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--pr-line);
  border: 1px solid var(--pr-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-products .pr-hero-stats .stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  background: rgba(8, 19, 38, 0.94);
}

.page-products .pr-hero-stats .stat__value {
  font-family: var(--mono);
  font-size: var(--fs-30);
  line-height: 1.1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-products .pr-hero-stats .stat__label {
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--note);
}

/* ---------- sections ---------- */

.page-products .pr-section {
  padding: clamp(40px, 6vw, 84px) 0;
  border-top: 1px solid var(--pr-line);
}

.page-products .pr-head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(22px, 3vw, 36px);
}

.page-products .pr-head h2 {
  margin: 0;
  font-family: var(--sans);
  font-size: clamp(26px, 3.6vw, 44px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--snow);
}

.page-products .pr-head p {
  margin: 0;
  max-width: 60ch;
  font-size: var(--fs-17);
  line-height: 1.85;
  color: var(--note);
}

.page-products .pr-figure {
  margin: clamp(22px, 3vw, 34px) 0 0;
}

.page-products .pr-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--pr-line);
  border-radius: var(--radius);
}

/* ---------- v3 fields ---------- */

.page-products .pr-fieldcards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--pr-line);
  border: 1px solid var(--pr-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-products .pr-fieldcard {
  padding: 22px 20px 24px;
  background: var(--pr-card);
  transition: background var(--ease);
}

.page-products .pr-fieldcard:hover {
  background: linear-gradient(180deg, rgba(22, 42, 74, 0.86), rgba(8, 19, 38, 0.9));
}

.page-products .pr-num {
  display: block;
  font-family: var(--mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--clay);
}

.page-products .pr-fieldcard h3 {
  margin: 10px 0 8px;
  font-size: var(--fs-22);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--snow);
}

.page-products .pr-fieldcard p {
  margin: 0;
  font-size: var(--fs-15);
  line-height: 1.8;
  color: var(--note);
}

/* ---------- benefits ---------- */

.page-products .pr-benefits {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pr-gap);
  margin-top: clamp(22px, 3vw, 34px);
}

.page-products .pr-col {
  border: 1px solid var(--pr-line);
  border-radius: var(--radius);
  background: var(--pr-card);
  padding: 22px 20px 24px;
}

.page-products .pr-col--fit {
  border-top: 2px solid var(--turf);
}

.page-products .pr-col h3 {
  margin: 0 0 16px;
  font-size: var(--fs-22);
  font-weight: 700;
  color: var(--snow);
}

.page-products .pr-perks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-products .pr-perks li {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 10px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--pr-line-soft);
}

.page-products .pr-perks li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-products .pr-perks svg {
  color: var(--turf);
  margin-top: 5px;
}

.page-products .pr-perks strong {
  display: block;
  font-size: var(--fs-17);
  font-weight: 700;
  color: var(--snow);
  margin-bottom: 4px;
}

.page-products .pr-perks p {
  margin: 0;
  font-size: var(--fs-15);
  line-height: 1.8;
  color: var(--note);
}

.page-products .pr-fit {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .pr-fit li {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 12px;
  font-size: var(--fs-15);
  line-height: 1.8;
  color: var(--note);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--pr-line-soft);
}

.page-products .pr-fit li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-products .pr-fit-key {
  font-family: var(--mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--clay);
}

.page-products .pr-inline-link {
  display: inline-block;
  margin-top: 20px;
  font-size: var(--fs-15);
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--pr-line);
  padding-bottom: 2px;
  transition: border-color var(--ease), color var(--ease);
}

.page-products .pr-inline-link:hover,
.page-products .pr-inline-link:focus-visible {
  color: var(--snow);
  border-bottom-color: var(--turf);
}

/* ---------- download steps ---------- */

.page-products .pr-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pr-gap);
}

.page-products .pr-step-block {
  border: 1px solid var(--pr-line);
  border-radius: var(--radius);
  background: var(--pr-card);
  padding: 22px 20px 24px;
}

.page-products .pr-step-block--after {
  border-left: 2px solid var(--track);
}

.page-products .pr-step-block h3 {
  margin: 0 0 18px;
  font-size: var(--fs-22);
  font-weight: 700;
  color: var(--snow);
}

.page-products .pr-step-list {
  list-style: none;
  counter-reset: prs;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-products .pr-step-list li {
  counter-increment: prs;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  font-size: var(--fs-15);
  line-height: 1.8;
  color: var(--note);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--pr-line-soft);
}

.page-products .pr-step-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-products .pr-step-list li::before {
  content: counter(prs, decimal-leading-zero);
  font-family: var(--mono);
  font-size: var(--fs-13);
  font-variant-numeric: tabular-nums;
  color: var(--track);
  line-height: 1.9;
}

.page-products .pr-tail-note {
  margin: 24px 0 0;
  padding: 14px 16px;
  border-left: 2px solid var(--turf);
  background: rgba(57, 196, 110, 0.07);
  font-size: var(--fs-15);
  line-height: 1.8;
  color: var(--note);
}

.page-products .pr-tail-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--pr-line);
}

.page-products .pr-tail-note a:hover,
.page-products .pr-tail-note a:focus-visible {
  color: var(--snow);
  border-bottom-color: var(--turf);
}

/* ---------- device table ---------- */

.page-products .pr-devices {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pr-gap);
}

.page-products .pr-devices-aside .pr-figure {
  margin: 0;
}

.page-products .pr-legend {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  font-size: var(--fs-13);
  line-height: 1.7;
  color: var(--note);
}

.page-products .pr-legend li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--pr-line-soft);
}

.page-products .pr-legend li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-products .pr-level {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  flex-shrink: 0;
}

.page-products .pr-level i {
  display: block;
  width: 11px;
  height: 5px;
  background: var(--rock);
}

.page-products .pr-level em {
  font-family: var(--mono);
  font-style: normal;
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  margin-left: 6px;
  color: var(--note);
}

.page-products .pr-level--a i {
  background: var(--turf);
}

.page-products .pr-level--b i:nth-child(1),
.page-products .pr-level--b i:nth-child(2) {
  background: var(--cyan);
}

.page-products .pr-level--c i:nth-child(1) {
  background: var(--track);
}

.page-products .pr-level--a em {
  color: var(--turf);
}

.page-products .pr-level--b em {
  color: var(--cyan);
}

.page-products .pr-level--c em {
  color: var(--track);
}

.page-products .pr-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--pr-line);
  border-radius: var(--radius);
  background: rgba(8, 19, 38, 0.6);
}

.page-products .pr-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: var(--fs-15);
}

.page-products .pr-table caption {
  padding: 12px 14px;
  text-align: left;
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--note);
  border-bottom: 1px solid var(--pr-line);
}

.page-products .pr-table thead th {
  padding: 11px 14px;
  text-align: left;
  font-size: var(--fs-12);
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--note);
  background: var(--stand);
  border-bottom: 1px solid var(--pr-line);
  white-space: nowrap;
}

.page-products .pr-table tbody td {
  padding: 12px 14px;
  border-top: 1px solid var(--pr-line-soft);
  color: var(--snow);
  vertical-align: middle;
}

.page-products .pr-table tbody td:nth-child(1) {
  width: 96px;
  font-weight: 600;
}

.page-products .pr-table tbody td:nth-child(2) {
  width: 210px;
  color: var(--note);
}

.page-products .pr-table tbody tr:nth-child(even) {
  background: rgba(16, 32, 58, 0.5);
}

.page-products .pr-table tbody tr:hover {
  background: rgba(57, 196, 110, 0.08);
}

.page-products .pr-table .pr-group th {
  padding: 9px 14px;
  text-align: left;
  font-family: var(--mono);
  font-size: var(--fs-12);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--turf);
  background: rgba(57, 196, 110, 0.12);
  border-top: 1px solid var(--pr-line);
}

/* ---------- versions ---------- */

.page-products .pr-versions {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pr-gap);
}

.page-products .pr-version {
  border: 1px solid var(--pr-line);
  border-radius: var(--radius);
  background: var(--pr-card);
  overflow: hidden;
}

.page-products .pr-version__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  font-family: var(--mono);
  font-size: var(--fs-15);
  letter-spacing: 0.06em;
}

.page-products .pr-version--v3 .pr-version__head {
  background: var(--turf);
  color: var(--ink);
}

.page-products .pr-version--v2 .pr-version__head {
  background: var(--stand);
  color: var(--note);
}

.page-products .pr-version__head .mono {
  font-family: var(--mono);
  font-size: var(--fs-12);
}

.page-products .pr-version ul {
  list-style: none;
  margin: 0;
  padding: 18px 18px 22px;
  display: grid;
  gap: 12px;
}

.page-products .pr-version li {
  position: relative;
  padding-left: 16px;
  font-size: var(--fs-15);
  line-height: 1.8;
  color: var(--note);
}

.page-products .pr-version li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 1px;
  background: var(--moss);
}

/* ---------- archive fields ---------- */

.page-products .pr-fields {
  border-top: 1px solid var(--pr-line);
}

.page-products .pr-field {
  border-bottom: 1px solid var(--pr-line);
}

.page-products .pr-field summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px 14px;
  align-items: baseline;
  padding: 16px 4px;
  cursor: pointer;
  list-style: none;
}

.page-products .pr-field summary::-webkit-details-marker {
  display: none;
}

.page-products .pr-field-key {
  grid-column: 1;
  font-family: var(--mono);
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--clay);
}

.page-products .pr-field summary h3 {
  grid-column: 1;
  margin: 0;
  font-size: var(--fs-17);
  font-weight: 700;
  color: var(--snow);
}

.page-products .pr-field summary::after {
  content: "展开";
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--turf);
}

.page-products .pr-field[open] summary::after {
  content: "收起";
}

.page-products .pr-field p {
  margin: 0 0 18px;
  padding: 0 4px 0 4px;
  max-width: 62ch;
  font-size: var(--fs-15);
  line-height: 1.85;
  color: var(--note);
}

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

/* ---------- contact band ---------- */

.page-products .pr-contact {
  background: linear-gradient(180deg, rgba(16, 32, 58, 0.92), rgba(8, 19, 38, 0.96));
}

.page-products .pr-contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pr-gap);
  align-items: start;
}

.page-products .pr-contact h2 {
  margin: 0 0 14px;
  font-size: clamp(24px, 3.2vw, 36px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--snow);
}

.page-products .pr-contact-copy p {
  margin: 0;
  max-width: 56ch;
  font-size: var(--fs-15);
  line-height: 1.85;
  color: var(--note);
}

.page-products .pr-contact-mail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 18px !important;
}

.page-products .pr-contact-mail .mono {
  font-family: var(--mono);
  font-size: var(--fs-13);
  color: var(--cyan);
  word-break: break-all;
}

.page-products .pr-copy {
  display: inline-flex;
  align-items: center;
  padding: 7px 13px;
  border: 1px solid var(--pr-line);
  border-radius: var(--radius);
  background: transparent;
  color: var(--snow);
  font-family: var(--sans);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: border-color var(--ease), color var(--ease);
}

.page-products .pr-copy:hover,
.page-products .pr-copy:focus-visible {
  border-color: var(--turf);
  color: var(--turf);
}

.page-products .pr-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .pr-contact-links {
  list-style: none;
  width: 100%;
  margin: 14px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--pr-line);
  display: grid;
  gap: 10px;
  font-size: var(--fs-13);
}

.page-products .pr-contact-links a {
  color: var(--note);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--ease), color var(--ease);
}

.page-products .pr-contact-links a:hover,
.page-products .pr-contact-links a:focus-visible {
  color: var(--snow);
  border-bottom-color: var(--turf);
}

/* ---------- responsive ---------- */

@media (min-width: 760px) {
  .page-products .pr-hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .pr-fieldcards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .pr-contact-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  }
}

@media (min-width: 900px) {
  .page-products .pr-hero-grid {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .pr-hero-stats {
    grid-column: 1 / -1;
  }

  .page-products .pr-benefits {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .pr-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .pr-versions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .pr-fieldcards {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .pr-field p {
    padding-left: 118px;
  }
}

@media (min-width: 980px) {
  .page-products .pr-devices {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-products .pr-head--rail {
    grid-template-columns: 30px minmax(0, 1fr);
    column-gap: 20px;
    align-items: start;
  }

  .page-products .pr-head--rail .pr-kicker {
    grid-column: 1;
    grid-row: 1 / span 2;
    justify-self: start;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
  }

  .page-products .pr-head--rail h2,
  .page-products .pr-head--rail p:not(.pr-kicker) {
    grid-column: 2;
  }

  .page-products .pr-section:nth-of-type(odd) .pr-head:not(.pr-head--rail) {
    padding-left: 12px;
  }

  .page-products .pr-section:nth-of-type(3n) .pr-head:not(.pr-head--rail) {
    padding-left: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .breadcrumb a,
  .page-products .pr-fieldcard,
  .page-products .pr-inline-link,
  .page-products .pr-copy,
  .page-products .pr-contact-links a {
    transition: none;
  }
}
<<<END>>>