/* =========================================================
   平台与版本 · page-products
   所有页面专属选择器均限定在 .page-products 作用域内
   ========================================================= */

.page-products {
  --pr-hair: 1px solid var(--rule);
  --pr-card: #FBF7EE;
  --pr-gap: clamp(18px, 2.4vw, 34px);
}

/* ---------- 面包屑 ---------- */
.page-products .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: clamp(16px, 3vw, 30px);
  font-family: var(--font-mono);
  font-size: var(--step-meta);
  letter-spacing: .05em;
}

.page-products .breadcrumb__item {
  color: var(--gray-brown);
  text-decoration: none;
}

.page-products .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--rule);
}

.page-products a.breadcrumb__item {
  color: var(--celadon);
  transition: color var(--dur-fast) var(--ease);
}

.page-products a.breadcrumb__item:hover {
  color: var(--amber);
}

/* ---------- 首屏：错位色块 ---------- */
.page-products .pr-head {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(30px, 5vw, 62px) 0 clamp(36px, 6vw, 76px);
}

.page-products .pr-head::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -20%;
  right: -8%;
  width: min(560px, 62vw);
  height: min(330px, 44vw);
  background: linear-gradient(135deg, var(--amber-light), rgba(232, 199, 122, .12));
  transform: rotate(-8deg);
  border-radius: 8px;
}

.page-products .pr-head::after {
  content: "";
  position: absolute;
  z-index: -1;
  bottom: -34%;
  left: -6%;
  width: min(430px, 50vw);
  height: min(220px, 28vw);
  background: var(--indigo);
  opacity: .07;
  transform: rotate(-8deg);
  border-radius: 8px;
}

.page-products .pr-head__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
  align-items: end;
}

@media (min-width: 880px) {
  .page-products .pr-head__grid {
    grid-template-columns: 7fr 5fr;
  }
}

.page-products .pr-head__eyebrow {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: var(--step-meta);
  letter-spacing: .16em;
  color: var(--amber);
}

.page-products .pr-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.1rem, 6.2vw, 4.6rem);
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--indigo);
}

.page-products .pr-head__lede {
  margin: 0;
  max-width: 30em;
  padding-left: clamp(14px, 1.6vw, 22px);
  border-left: 3px solid var(--amber);
  font-family: var(--font-body);
  font-size: clamp(.9375rem, 1.1vw, 1.0625rem);
  line-height: 1.9;
  color: var(--gray-brown);
}

/* ---------- 章节通用 ---------- */
.page-products .pr-choose,
.page-products .pr-number,
.page-products .pr-cats-sec,
.page-products .pr-flow-sec,
.page-products .pr-release-sec {
  padding: clamp(38px, 6vw, 78px) 0;
  border-top: 1px solid var(--rule);
}

/* ---------- 筛选条 ---------- */
.page-products .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: clamp(18px, 2.4vw, 28px);
}

.page-products .filter-chip {
  padding: 7px 16px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: transparent;
  color: var(--gray-brown);
  font-family: var(--font-display);
  font-size: .875rem;
  font-weight: 500;
  letter-spacing: .02em;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease),
              color var(--dur-fast) var(--ease),
              border-color var(--dur-fast) var(--ease);
}

.page-products .filter-chip:hover {
  border-color: var(--amber);
  color: var(--indigo);
}

.page-products .filter-chip[aria-pressed="true"] {
  background: var(--amber-light);
  border-color: var(--amber);
  color: var(--ink-deep);
}

.page-products .filter-chip:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-products .filter-status {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--step-meta);
  letter-spacing: .05em;
  color: var(--gray-brown);
}

/* ---------- 图片通用 ---------- */
.page-products .media-frame {
  margin: 0;
}

.page-products .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: var(--pr-hair);
}

.page-products .media-frame__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: .75rem;
  line-height: 1.65;
  letter-spacing: .04em;
  color: var(--gray-brown);
}

/* ---------- 01 版本对照 ---------- */
.page-products .pr-choose__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pr-gap);
  margin-top: clamp(20px, 3vw, 34px);
}

@media (min-width: 900px) {
  .page-products .pr-choose__grid {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-products .pr-version--b {
    margin-top: clamp(24px, 4vw, 52px);
  }
}

.page-products .pr-version {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: clamp(20px, 2.6vw, 32px);
  background: var(--pr-card);
  border: var(--pr-hair);
  border-radius: var(--radius);
}

.page-products .pr-version--a {
  border-top: 3px solid var(--amber);
}

.page-products .pr-version--b {
  border-top: 3px solid var(--indigo);
}

.page-products .pr-version__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.page-products .pr-ver-num {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1;
  letter-spacing: .06em;
  text-align: right;
  color: var(--indigo);
}

.page-products .pr-ver-num small {
  display: block;
  margin-top: 8px;
  font-family: var(--font-display);
  font-size: .6875rem;
  font-weight: 400;
  letter-spacing: .06em;
  color: var(--gray-brown);
}

.page-products .pr-version__q {
  margin: 0;
  padding-top: 14px;
  border-top: var(--pr-hair);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  line-height: 1.65;
  color: var(--indigo);
}

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

.page-products .pr-version__list li {
  position: relative;
  padding-left: 18px;
  font-family: var(--font-body);
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--gray-brown);
}

.page-products .pr-version__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 7px;
  height: 2px;
  background: var(--amber);
}

.page-products .pr-choose__aside {
  display: flex;
  justify-content: flex-end;
  margin-top: clamp(26px, 3.4vw, 46px);
}

.page-products .pr-aside-figure {
  margin: 0;
  width: min(100%, 230px);
}

.page-products .pr-aside-frame {
  aspect-ratio: 9 / 16;
  overflow: hidden;
  border: var(--pr-hair);
  border-radius: 6px;
  background: var(--indigo);
}

.page-products .pr-aside-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 02 编号对照 ---------- */
.page-products .pr-number__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.2vw, 42px);
  margin-top: clamp(20px, 3vw, 34px);
}

@media (min-width: 900px) {
  .page-products .pr-number__grid {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }
}

.page-products .pr-number__text {
  margin: 0 0 18px;
  max-width: 28em;
  font-family: var(--font-body);
  font-size: .9375rem;
  line-height: 1.9;
  color: var(--gray-brown);
}

.page-products .pr-number__text a {
  color: var(--celadon);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--dur-fast) var(--ease);
}

.page-products .pr-number__text a:hover {
  color: var(--amber);
}

.page-products .pr-number__sample {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  background: var(--glass);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius);
}

.page-products .pr-number__sample-label {
  font-family: var(--font-display);
  font-size: .75rem;
  letter-spacing: .1em;
  color: rgba(244, 239, 228, .62);
}

.page-products .pr-number__sample-val {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.75rem;
  letter-spacing: .1em;
  color: var(--amber-light);
}

.page-products .pr-number__sample .copy-btn {
  margin-left: auto;
  padding: 6px 14px;
  border: 1px solid rgba(232, 199, 122, .5);
  border-radius: 999px;
  background: transparent;
  color: var(--amber-light);
  font-family: var(--font-display);
  font-size: .8125rem;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease);
}

.page-products .pr-number__sample .copy-btn:hover {
  background: rgba(232, 199, 122, .16);
}

.page-products .pr-number__sample .copy-btn:focus-visible {
  outline: 2px solid var(--amber-light);
  outline-offset: 2px;
}

/* ---------- 03 分类体系 ---------- */
.page-products .pr-cats__figure {
  margin-top: clamp(20px, 3vw, 34px);
}

.page-products .pr-cats {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 1.8vw, 22px);
  margin: clamp(22px, 3vw, 38px) 0 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 700px) {
  .page-products .pr-cats {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1080px) {
  .page-products .pr-cats {
    grid-template-columns: repeat(3, 1fr);
    row-gap: 34px;
  }

  .page-products .pr-cat:nth-child(3n + 2) {
    transform: translateY(-16px);
  }
}

.page-products .pr-cat {
  display: grid;
  gap: 8px;
  padding: clamp(16px, 2vw, 24px);
  background: var(--paper);
  border: var(--pr-hair);
  border-left: 3px solid var(--celadon);
  border-radius: var(--radius);
  transition: box-shadow var(--dur-fast) var(--ease);
}

.page-products .pr-cat:hover {
  box-shadow: var(--shadow-plate);
}

.page-products .pr-cat__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-products .pr-cat__num {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .12em;
  color: var(--amber);
}

.page-products .pr-cat__count {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.375rem;
  line-height: 1;
  letter-spacing: .06em;
  color: var(--indigo);
}

.page-products .pr-cat__count i {
  margin-left: 5px;
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 400;
  font-size: .6875rem;
  letter-spacing: .08em;
  color: var(--gray-brown);
}

.page-products .pr-cat__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  line-height: 1.4;
  color: var(--indigo);
}

.page-products .pr-cat__note {
  margin: 0;
  font-family: var(--font-body);
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--gray-brown);
}

.page-products .pr-cats__total {
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding-top: 16px;
  border-top: var(--pr-hair);
  font-family: var(--font-body);
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--gray-brown);
}

.page-products .pr-cats__total .mono {
  font-weight: 700;
  color: var(--amber);
}

.page-products .pr-cats__total a {
  color: var(--celadon);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--dur-fast) var(--ease);
}

.page-products .pr-cats__total a:hover {
  color: var(--amber);
}

/* ---------- 04 收藏阶梯 ---------- */
.page-products .pr-flow-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.4vw, 48px);
  margin-top: clamp(22px, 3vw, 38px);
}

@media (min-width: 980px) {
  .page-products .pr-flow-wrap {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }
}

.page-products .pr-flow {
  border-left: 2px solid var(--rule);
}

.page-products .pr-step {
  border-bottom: var(--pr-hair);
}

.page-products .pr-step:first-child {
  border-top: var(--pr-hair);
}

.page-products .pr-step__sum {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 18px 0 18px 20px;
  list-style: none;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease);
}

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

.page-products .pr-step__sum::marker {
  content: "";
}

.page-products .pr-step__sum:hover {
  background: rgba(200, 145, 47, .07);
}

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

.page-products .pr-step__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .8125rem;
  letter-spacing: .1em;
  color: var(--amber);
}

.page-products .pr-step__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--indigo);
}

.page-products .pr-step__sum::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.125rem;
  line-height: 1;
  color: var(--amber);
}

.page-products .pr-step[open] .pr-step__sum::after {
  content: "\2212";
}

.page-products .pr-step__body {
  margin: 0;
  max-width: 34em;
  padding: 0 0 20px 20px;
  font-family: var(--font-body);
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--gray-brown);
}

.page-products .pr-step__body a {
  color: var(--celadon);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--dur-fast) var(--ease);
}

.page-products .pr-step__body a:hover {
  color: var(--amber);
}

@media (min-width: 760px) {
  .page-products .pr-step:nth-child(2) .pr-step__sum,
  .page-products .pr-step:nth-child(2) .pr-step__body {
    padding-left: 5%;
  }

  .page-products .pr-step:nth-child(3) .pr-step__sum,
  .page-products .pr-step:nth-child(3) .pr-step__body {
    padding-left: 10%;
  }

  .page-products .pr-step:nth-child(4) .pr-step__sum,
  .page-products .pr-step:nth-child(4) .pr-step__body {
    padding-left: 15%;
  }
}

.page-products .pr-flow__aside {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-products .pr-flow__figure {
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--paper);
}

.page-products .pr-flow__hint {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-body);
  font-size: .875rem;
  line-height: 1.7;
  color: var(--gray-brown);
}

.page-products .pr-flow__hint .copy-btn {
  padding: 6px 14px;
  border: 1px solid var(--amber);
  border-radius: 999px;
  background: transparent;
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .04em;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease);
}

.page-products .pr-flow__hint .copy-btn:hover {
  background: var(--amber-light);
  color: var(--ink-deep);
}

.page-products .pr-flow__hint .copy-btn:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

/* ---------- 05 版本号与更新 ---------- */
.page-products .pr-release {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.2vw, 26px);
  margin-top: clamp(20px, 3vw, 34px);
}

@media (min-width: 720px) {
  .page-products .pr-release {
    grid-template-columns: repeat(2, 1fr);
  }
}

.page-products .pr-rel-card {
  display: grid;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 32px);
  background: var(--pr-card);
  border: var(--pr-hair);
  border-top: 3px solid var(--amber);
  border-radius: var(--radius);
}

.page-products .pr-rel-card--alt {
  border-top-color: var(--indigo);
}

.page-products .pr-rel-label {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: .8125rem;
  letter-spacing: .14em;
  color: var(--celadon);
}

.page-products .pr-rel-num {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  line-height: 1;
  letter-spacing: .06em;
  color: var(--indigo);
}

.page-products .pr-rel-note {
  margin: 0;
  max-width: 28em;
  font-family: var(--font-body);
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--gray-brown);
}

.page-products .pr-cadence {
  display: grid;
  gap: 12px;
  max-width: 34em;
  margin: clamp(24px, 3vw, 38px) 0 0;
  padding: 0;
  list-style: none;
}

.page-products .pr-cadence li {
  position: relative;
  padding-left: 20px;
  font-family: var(--font-body);
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--gray-brown);
}

.page-products .pr-cadence li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 8px;
  height: 2px;
  background: var(--amber);
}

.page-products .pr-cadence .mono {
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--indigo);
}

.page-products .pr-cadence a {
  color: var(--celadon);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--dur-fast) var(--ease);
}

.page-products .pr-cadence a:hover {
  color: var(--amber);
}

.page-products .pr-release__figure {
  margin-top: clamp(26px, 3.4vw, 44px);
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-products .filter-chip,
  .page-products .pr-cat,
  .page-products .pr-step__sum,
  .page-products .pr-number__text a,
  .page-products .pr-cadence a,
  .page-products .pr-step__body a,
  .page-products .pr-cats__total a,
  .page-products .copy-btn,
  .page-products a.breadcrumb__item {
    transition: none;
  }
}
<<<END>>>