.page-products {
  --pr-cut: 22px;
  --pr-top: 6rem;
  background:
    radial-gradient(1100px 620px at 88% -8%, rgba(46, 211, 198, .14), transparent 62%),
    radial-gradient(900px 540px at 4% 6%, rgba(255, 107, 74, .12), transparent 60%),
    var(--sea-900);
  color: var(--fog);
  font-family: var(--ff-body);
  line-height: 1.75;
  padding-bottom: clamp(2.5rem, 7vw, 5rem);
  overflow-x: clip;
}

.page-products .crumbs {
  padding-top: clamp(5.5rem, 12vw, 7rem);
}

.page-products .crumb-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 0;
  padding: 0;
  font-size: var(--fs-14);
  color: var(--mist);
}

.page-products .crumb-list li + li::before {
  content: "/";
  margin-right: .5rem;
  color: var(--sea-700);
}

.page-products .crumb-link {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-products .crumb-link:hover,
.page-products .crumb-link:focus-visible {
  color: var(--teal);
  border-bottom-color: var(--teal);
}

.page-products .crumb-current {
  color: var(--sand);
}

/* —— 首屏 —— */
.page-products .pr-lead {
  padding-block: clamp(1.25rem, 3vw, 2rem) clamp(2rem, 5vw, 3.5rem);
}

.page-products .pr-lead__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-products .pr-lead__main {
  min-width: 0;
}

.page-products .pr-lead__kicker {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: .14em;
  color: var(--sand);
  text-transform: uppercase;
}

.page-products .pr-lead__kicker::before {
  content: "";
  width: 2.2rem;
  height: 1px;
  background: var(--coral);
}

.page-products .pr-lead h1 {
  margin: .85rem 0 0;
  font-family: var(--ff-head);
  font-weight: 900;
  font-size: var(--fs-48);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-products .pr-lead__lede {
  margin: 1.1rem 0 0;
  max-width: 24em;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--mist);
}

.page-products .pr-lead__meta {
  margin: 1.35rem 0 0;
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--sea-700);
  color: var(--mist);
}

.page-products .pr-lead__cards {
  display: grid;
  gap: .75rem;
  min-width: 0;
}

.page-products .pr-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .15rem .85rem;
  align-items: baseline;
  padding: 1rem 1.2rem;
  text-decoration: none;
  color: inherit;
  background: linear-gradient(155deg, rgba(22, 62, 87, .92), rgba(7, 28, 44, .94));
  border: 1px solid var(--line);
  border-left: 2px solid var(--coral);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--pr-cut)), calc(100% - var(--pr-cut)) 100%, 0 100%);
  transition: transform .26s var(--ease), border-color .26s var(--ease), background .26s var(--ease);
}

.page-products .pr-card:hover,
.page-products .pr-card:focus-visible {
  transform: translateX(5px);
  border-left-color: var(--teal);
  background: linear-gradient(155deg, rgba(22, 62, 87, 1), rgba(12, 42, 64, .96));
}

.page-products .pr-card:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

.page-products .pr-card__no {
  font-size: var(--fs-12);
  color: var(--sand);
  letter-spacing: .08em;
}

.page-products .pr-card__title {
  font-family: var(--ff-head);
  font-weight: 700;
  font-size: var(--fs-20);
  letter-spacing: -0.01em;
  color: var(--fog);
}

.page-products .pr-card__desc {
  grid-column: 2;
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--mist);
}

.page-products .pr-card:nth-child(2) {
  margin-left: clamp(0rem, 2vw, 1.6rem);
}

.page-products .pr-card:nth-child(3) {
  margin-left: clamp(0rem, 4vw, 3.2rem);
}

/* —— 通用章节 —— */
.page-products .pr-sec {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  border-top: 1px solid var(--line-soft);
}

.page-products .pr-head {
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

.page-products .pr-head__no {
  display: block;
  font-size: var(--fs-14);
  letter-spacing: .18em;
  color: var(--sand);
  margin-bottom: .5rem;
}

.page-products .pr-head h2 {
  margin: 0;
  font-family: var(--ff-head);
  font-weight: 800;
  font-size: var(--fs-36);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-products .pr-head__note {
  margin: .9rem 0 0;
  max-width: 40em;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--mist);
}

.page-products .pr-link {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 211, 198, .45);
}

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

.page-products .pr-fig {
  margin: 0 0 clamp(1.5rem, 3vw, 2rem);
}

.page-products .pr-fig img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--pr-cut)) 0, 100% var(--pr-cut), 100% 100%, var(--pr-cut) 100%, 0 calc(100% - var(--pr-cut)));
  background: var(--sea-800);
}

/* —— 下载区 —— */
.page-products .pr-hero-fig {
  position: relative;
  margin: 0 0 clamp(1.5rem, 3vw, 2rem);
  isolation: isolate;
}

.page-products .pr-hero-fig img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 3rem), calc(100% - 3rem) 100%, 0 100%);
}

.page-products .pr-hero-fig::after {
  content: "";
  position: absolute;
  top: 8%;
  right: 2%;
  width: 26%;
  height: 58%;
  background: repeating-linear-gradient(115deg, rgba(255, 107, 74, .55) 0 2px, transparent 2px 11px);
  pointer-events: none;
  z-index: 2;
  opacity: .55;
}

.page-products .pr-hero-fig__cap {
  margin-top: .7rem;
  font-size: var(--fs-14);
  color: var(--mist);
}

.page-products .pr-dl {
  display: grid;
  gap: 1.25rem;
}

.page-products .pr-dl__panel {
  background: linear-gradient(160deg, rgba(12, 42, 64, .95), rgba(4, 18, 28, .92));
  border: 1px solid var(--line);
  clip-path: polygon(var(--pr-cut) 0, 100% 0, 100% 100%, 0 100%, 0 var(--pr-cut));
  padding: clamp(1rem, 3vw, 1.6rem);
}

.page-products .pr-radio {
  position: absolute;
}

.page-products .pr-seg {
  display: flex;
  gap: .3rem;
  padding: .3rem;
  background: rgba(4, 18, 28, .78);
  border: 1px solid var(--line);
  border-radius: var(--pill);
}

.page-products .pr-seg__btn {
  flex: 1 1 0;
  text-align: center;
  padding: .55rem .6rem;
  border-radius: var(--pill);
  font-size: var(--fs-14);
  color: var(--mist);
  cursor: pointer;
  user-select: none;
  transition: background .2s var(--ease), color .2s var(--ease);
}

.page-products .pr-seg__btn:hover {
  color: var(--fog);
}

.page-products #pr-os-win:checked ~ .pr-seg .pr-seg__btn[for="pr-os-win"],
.page-products #pr-os-mac:checked ~ .pr-seg .pr-seg__btn[for="pr-os-mac"] {
  background: var(--coral);
  color: #240d06;
  font-weight: 700;
}

.page-products #pr-os-win:focus-visible ~ .pr-seg .pr-seg__btn[for="pr-os-win"],
.page-products #pr-os-mac:focus-visible ~ .pr-seg .pr-seg__btn[for="pr-os-mac"] {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.page-products .pr-pane {
  display: none;
  margin-top: 1.15rem;
}

.page-products #pr-os-win:checked ~ .pr-pane--win,
.page-products #pr-os-mac:checked ~ .pr-pane--mac {
  display: block;
}

.page-products .pr-spec {
  margin: 0 0 1rem;
  display: grid;
  gap: .5rem;
}

.page-products .pr-spec__row {
  display: grid;
  grid-template-columns: 6.5em 1fr;
  gap: .75rem;
  padding-bottom: .5rem;
  border-bottom: 1px dashed var(--line-soft);
  font-size: var(--fs-14);
}

.page-products .pr-spec__row dt {
  color: var(--mist);
}

.page-products .pr-spec__row dd {
  margin: 0;
  color: var(--fog);
}

.page-products .pr-spec__row dd.mono {
  color: var(--sand);
}

.page-products .pr-mini {
  margin: 0;
  padding-left: 1.15rem;
  display: grid;
  gap: .35rem;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
}

.page-products .pr-mini li::marker {
  color: var(--coral);
}

.page-products .pr-dl__check {
  padding: clamp(1rem, 3vw, 1.5rem);
  background: rgba(22, 62, 87, .28);
  border: 1px solid var(--line);
  border-top: 2px solid var(--teal);
}

.page-products .pr-dl__check-title {
  margin: 0 0 .85rem;
  font-family: var(--ff-head);
  font-weight: 700;
  font-size: var(--fs-20);
  color: var(--fog);
}

.page-products .pr-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .6rem;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
}

.page-products .pr-checklist li {
  position: relative;
  padding-left: 1.5rem;
}

.page-products .pr-checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: .55rem;
  height: .55rem;
  border: 1px solid var(--teal);
  transform: rotate(45deg);
}

.page-products .pr-dl__actions {
  margin-top: 1.15rem;
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.page-products .pr-copy.is-done {
  border-color: var(--teal);
  color: var(--teal);
}

.page-products .pr-dl__hint {
  margin: .8rem 0 0;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--mist);
}

/* —— 账务时间轴 —— */
.page-products .pr-sec--ledger {
  background:
    linear-gradient(180deg, rgba(4, 18, 28, .55), transparent 30%),
    transparent;
}

.page-products .pr-ledger__grid {
  display: grid;
  gap: 1.5rem;
}

.page-products .pr-ledger__main {
  min-width: 0;
}

.page-products .pr-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-products .pr-node {
  position: relative;
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  column-gap: 1rem;
  padding-bottom: 1.1rem;
}

.page-products .pr-node::before {
  content: "";
  position: absolute;
  left: calc(1.25rem - 1px);
  top: .9rem;
  bottom: -.1rem;
  width: 2px;
  background: linear-gradient(180deg, var(--teal), rgba(46, 211, 198, .08));
}

.page-products .pr-node:last-child {
  padding-bottom: 0;
}

.page-products .pr-node:last-child::before {
  display: none;
}

.page-products .pr-node__dot {
  grid-column: 1;
  grid-row: 1;
  align-self: start;
  margin: .7rem auto 0;
  width: .85rem;
  height: .85rem;
  border-radius: 50%;
  background: var(--sea-900);
  border: 2px solid var(--teal);
  box-shadow: 0 0 0 4px rgba(46, 211, 198, .13);
  position: relative;
  z-index: 1;
}

.page-products .pr-node__card {
  grid-column: 2;
  padding: .9rem 1.05rem 1rem;
  background: linear-gradient(150deg, rgba(12, 42, 64, .94), rgba(7, 28, 44, .78));
  border: 1px solid var(--line);
  border-left: 2px solid var(--teal);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-products .pr-node__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem .7rem;
}

.page-products .pr-node__no {
  font-size: var(--fs-12);
  color: var(--sand);
  letter-spacing: .08em;
}

.page-products .pr-node__title {
  margin: 0;
  font-family: var(--ff-head);
  font-weight: 700;
  font-size: var(--fs-20);
  letter-spacing: -0.01em;
  color: var(--fog);
}

.page-products .pr-node__card p {
  margin: .55rem 0 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--mist);
}

.page-products .pr-node__faq {
  margin-top: .7rem;
  border-top: 1px dashed var(--line-soft);
  padding-top: .6rem;
}

.page-products .pr-node__faq summary {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-14);
  color: var(--sand);
  transition: color .2s var(--ease);
}

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

.page-products .pr-node__faq summary::before {
  content: "＋";
  font-family: var(--ff-mono);
  font-size: var(--fs-14);
  color: var(--coral);
}

.page-products .pr-node__faq[open] summary::before {
  content: "－";
}

.page-products .pr-node__faq summary:hover,
.page-products .pr-node__faq summary:focus-visible {
  color: var(--fog);
}

.page-products .pr-node__faq summary:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

.page-products .pr-note-card {
  padding: 1.15rem 1.2rem 1.3rem;
  background: linear-gradient(170deg, rgba(22, 62, 87, .55), rgba(4, 18, 28, .8));
  border: 1px solid var(--line);
  border-bottom: 2px solid var(--coral);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.page-products .pr-note-card__title {
  margin: 0 0 .9rem;
  font-family: var(--ff-head);
  font-weight: 700;
  font-size: var(--fs-20);
  color: var(--fog);
}

.page-products .pr-legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .7rem;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
}

.page-products .pr-legend li {
  display: grid;
  grid-template-columns: .8rem 1fr;
  gap: .65rem;
  align-items: start;
}

.page-products .pr-legend strong {
  color: var(--fog);
  font-weight: 700;
}

.page-products .pr-legend__dot {
  width: .7rem;
  height: .7rem;
  margin-top: .5rem;
  border-radius: 50%;
}

.page-products .pr-legend__dot--teal { background: var(--teal); }
.page-products .pr-legend__dot--coral { background: var(--coral); }
.page-products .pr-legend__dot--sand { background: var(--sand); }

.page-products .pr-note-card__foot {
  margin: 1rem 0 1.1rem;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--mist);
}

/* —— 注册步骤 —— */
.page-products .pr-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: .4rem;
  margin-bottom: clamp(1.25rem, 3vw, 1.75rem);
}

.page-products .pr-track__seg {
  height: 5px;
  border-radius: 3px;
  background: rgba(143, 169, 158, .22);
}

.page-products .pr-track__seg.is-on {
  background: var(--coral);
}

.page-products .pr-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.page-products .pr-step {
  position: relative;
  padding: 1rem 1.1rem 1.1rem;
  background: rgba(12, 42, 64, .62);
  border: 1px solid var(--line);
  border-top: 2px solid var(--coral);
}

.page-products .pr-step__no {
  display: block;
  font-size: var(--fs-12);
  letter-spacing: .14em;
  color: var(--sand);
}

.page-products .pr-step__title {
  margin: .3rem 0 .5rem;
  font-family: var(--ff-head);
  font-weight: 700;
  font-size: var(--fs-20);
  color: var(--fog);
}

.page-products .pr-step p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--mist);
}

.page-products .pr-step__trap {
  margin-top: .6rem !important;
  padding-top: .55rem;
  border-top: 1px dashed var(--line-soft);
  color: var(--mist);
}

.page-products .pr-steps__foot {
  margin: 1.35rem 0 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--mist);
}

/* —— 换设备 —— */
.page-products .pr-switch__grid {
  display: grid;
  gap: 1.5rem;
  align-items: center;
}

.page-products .pr-switch__body {
  min-width: 0;
}

.page-products .pr-switch__body h2 {
  margin: 0 0 .9rem;
  font-family: var(--ff-head);
  font-weight: 800;
  font-size: var(--fs-28);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--fog);
}

.page-products .pr-switch__body p {
  margin: 0;
  max-width: 32em;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--mist);
}

.page-products .pr-recover {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  gap: .7rem;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
}

.page-products .pr-recover li {
  padding-left: .9rem;
  border-left: 2px solid var(--teal);
}

.page-products .pr-recover strong {
  color: var(--sand);
  font-family: var(--ff-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  margin-right: .4rem;
}

.page-products .pr-switch__tip {
  margin-top: 1rem !important;
  font-size: var(--fs-14) !important;
  color: var(--mist);
}

/* —— 版本区 —— */
.page-products .pr-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem;
  margin-bottom: clamp(1.5rem, 3vw, 2rem);
}

.page-products .pr-metric {
  padding: .95rem 1rem 1.05rem;
  background: rgba(4, 18, 28, .62);
  border: 1px solid var(--line);
  border-left: 2px solid var(--sand);
}

.page-products .pr-metric__num {
  font-size: var(--fs-36);
  font-weight: 700;
  line-height: 1;
  color: var(--sand);
  letter-spacing: -0.01em;
}

.page-products .pr-metric__unit {
  margin-left: .2rem;
  font-size: var(--fs-14);
  color: var(--mist);
}

.page-products .pr-metric__label {
  display: block;
  margin-top: .55rem;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--mist);
}

.page-products .pr-versions__grid {
  display: grid;
  gap: 1.5rem;
  align-items: start;
}

.page-products .pr-versions__grid .pr-fig {
  margin-bottom: 0;
}

.page-products .pr-versions__body p {
  margin: 0 0 .9rem;
  max-width: 34em;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--mist);
}

.page-products .pr-versions__links {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 1.2rem;
}

/* —— 后续链接 —— */
.page-products .pr-sec--next {
  border-top: 1px solid var(--line-soft);
}

.page-products .pr-next__title {
  margin: 0 0 1.25rem;
  font-family: var(--ff-head);
  font-weight: 800;
  font-size: var(--fs-28);
  letter-spacing: -0.01em;
  color: var(--fog);
}

.page-products .pr-next__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .6rem;
}

.page-products .pr-next__item {
  display: grid;
  grid-template-columns: 1.5rem 1fr;
  gap: .2rem .8rem;
  align-items: baseline;
  padding: .85rem 1rem;
  text-decoration: none;
  color: inherit;
  background: rgba(12, 42, 64, .45);
  border: 1px solid var(--line-soft);
  transition: border-color .24s var(--ease), background .24s var(--ease);
}

.page-products .pr-next__item:hover,
.page-products .pr-next__item:focus-visible {
  border-color: var(--teal);
  background: rgba(22, 62, 87, .6);
}

.page-products .pr-next__item:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.page-products .pr-next__no {
  font-size: var(--fs-12);
  color: var(--coral);
  letter-spacing: .08em;
}

.page-products .pr-next__name {
  font-family: var(--ff-head);
  font-weight: 700;
  font-size: var(--fs-16);
  color: var(--fog);
}

.page-products .pr-next__desc {
  grid-column: 2;
  font-size: var(--fs-14);
  line-height: 1.65;
  color: var(--mist);
}

/* —— 断点 —— */
@media (min-width: 700px) {
  .page-products .pr-lead h1 {
    font-size: var(--fs-64);
  }

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

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

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

@media (min-width: 900px) {
  .page-products .pr-lead__grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-products .pr-lead__main {
    padding-top: .5rem;
  }

  .page-products .pr-dl {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 1.5rem;
  }

  .page-products .pr-switch__grid {
    grid-template-columns: 5fr 7fr;
    gap: clamp(1.75rem, 4vw, 3rem);
  }

  .page-products .pr-versions__grid {
    grid-template-columns: 5fr 7fr;
    gap: clamp(1.75rem, 4vw, 3rem);
  }
}

@media (min-width: 1040px) {
  .page-products .pr-ledger__grid {
    grid-template-columns: minmax(0, 1fr) 19rem;
    gap: clamp(1.75rem, 4vw, 3rem);
    align-items: start;
  }

  .page-products .pr-ledger__aside {
    position: sticky;
    top: var(--pr-top);
  }

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

  .page-products .pr-node {
    grid-template-columns: 3.25rem minmax(0, 1fr);
    column-gap: 1.35rem;
  }

  .page-products .pr-node::before {
    left: calc(1.625rem - 1px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pr-card,
  .page-products .pr-seg__btn,
  .page-products .pr-next__item,
  .page-products .crumb-link {
    transition: none;
  }

  .page-products .pr-card:hover,
  .page-products .pr-card:focus-visible {
    transform: none;
  }
}
<<<END>>>