.page-products {
  --p-gap: clamp(2.6rem, 6vw, 5rem);
  --p-ink: var(--ink);
  --p-card: var(--ink-2);
  background: var(--ink);
  color: var(--paper);
  overflow-x: clip;
}

.page-products .prod-link {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(227, 169, 63, .45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-products .prod-link:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  padding-block: clamp(1.2rem, 3.5vw, 2.2rem) var(--p-gap);
}

.page-products .prod-hero .crumbs {
  margin-bottom: clamp(1.2rem, 3vw, 2rem);
}

.page-products .prod-hero__grid {
  display: grid;
  gap: clamp(1.4rem, 3.2vw, 2.4rem);
  align-items: start;
}

.page-products .prod-title {
  margin: .7rem 0 1rem;
  font-size: clamp(1.95rem, 6.2vw, 3.4rem);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -.02em;
  display: grid;
  gap: .55rem;
}

.page-products .prod-title__sub {
  display: block;
  font-size: clamp(.92rem, 2.4vw, 1.1rem);
  font-weight: 400;
  line-height: 1.65;
  letter-spacing: 0;
  color: var(--mist);
  max-width: 34ch;
}

.page-products .prod-hero__lead .lede {
  max-width: 60ch;
  font-size: clamp(.95rem, 2.3vw, 1.02rem);
  line-height: 1.85;
  color: var(--mist);
}

.page-products .prod-hero__hint {
  margin: 1.1rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem .7rem;
  align-items: center;
  font-size: .82rem;
  color: var(--mist);
}

/* ---------- 分段切换（双端 / 清单） ---------- */
.page-products .prod-switch {
  margin-top: 1.5rem;
}

.page-products .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  padding-bottom: .6rem;
  border-bottom: 1px solid var(--line);
}

.page-products .tabs__btn {
  min-height: 44px;
  padding: .45rem 1.05rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--mist);
  font-family: var(--font-sans);
  font-size: .86rem;
  font-weight: 500;
  letter-spacing: .03em;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-products .tabs__btn:hover {
  color: var(--paper);
  border-color: var(--line-strong);
}

.page-products .tabs__btn[aria-selected="true"] {
  color: var(--paper);
  border-color: var(--line-red);
  background: rgba(215, 38, 61, .14);
}

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

.page-products .tabs__panel {
  padding-top: 1.15rem;
}

.page-products .prod-switch__panel ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .7rem;
}

.page-products .prod-switch__panel li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .7rem;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--mist);
  padding-bottom: .7rem;
  border-bottom: 1px dashed var(--line);
}

.page-products .prod-switch__panel li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-products .prod-k {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .1em;
  color: var(--amber);
  padding-top: .35rem;
  min-width: 3.2em;
}

/* ---------- 右侧预览卡 ---------- */
.page-products .prod-preview {
  position: relative;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(158deg, rgba(234, 240, 244, .10), rgba(10, 26, 42, .45));
}

.page-products .prod-preview__label {
  margin: 0 0 .7rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-products .prod-preview__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  object-fit: cover;
}

.page-products .prod-preview__list {
  list-style: none;
  margin: .9rem 0 0;
  padding: 0;
  display: grid;
  gap: .45rem;
}

.page-products .prod-preview__list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: .8rem;
  padding-top: .45rem;
  border-top: 1px solid var(--line);
  font-size: .82rem;
  color: var(--mist);
}

.page-products .prod-preview__val {
  font-family: var(--font-mono);
  font-size: .95rem;
  color: var(--amber);
  letter-spacing: .04em;
}

.page-products .prod-preview__note {
  margin: .85rem 0 0;
  font-size: .76rem;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 通用区段 ---------- */
.page-products .prod-sec {
  padding-block: var(--p-gap);
  border-top: 1px solid var(--line);
}

.page-products .prod-sec__head {
  margin-bottom: clamp(1.3rem, 3vw, 2rem);
}

.page-products .prod-sec__head .headline {
  margin: .55rem 0 .8rem;
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  line-height: 1.22;
  letter-spacing: -.01em;
}

.page-products .prod-sec__head .lede {
  max-width: 62ch;
  font-size: clamp(.92rem, 2.2vw, 1rem);
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 图文 ---------- */
.page-products .prod-figure {
  margin: 0 0 clamp(1.2rem, 3vw, 1.8rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--p-card);
}

.page-products .prod-figure--side {
  margin-bottom: 0;
}

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

.page-products .prod-figure figcaption {
  padding: .6rem .9rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--mist);
}

/* ---------- 清单矩阵 ---------- */
.page-products .prod-matrix .tabs__list {
  gap: .45rem;
}

.page-products .prod-items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .7rem;
}

.page-products .prod-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .8rem;
  padding: .85rem .95rem;
  border: 1px solid var(--line);
  border-left: 2px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--p-card);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-products .prod-item:hover {
  background: rgba(18, 41, 61, .95);
}

.page-products .prod-item__num {
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .06em;
  color: var(--amber);
  padding-top: .18rem;
}

.page-products .prod-item h3 {
  margin: 0 0 .3rem;
  font-size: .94rem;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: .01em;
}

.page-products .prod-item p {
  margin: 0;
  font-size: .83rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-products .prod-matrix [data-panel="guide"] .prod-item {
  border-left-color: var(--red);
}

.page-products .prod-matrix [data-panel="account"] .prod-item {
  border-left-color: var(--amber);
}

.page-products .prod-matrix [data-panel="faq"] .prod-item {
  border-left-color: var(--moss);
}

/* ---------- 三步 ---------- */
.page-products .prod-steps__track {
  position: relative;
  display: grid;
  gap: 1rem;
}

.page-products .prod-step {
  position: relative;
  padding: 1.1rem 1rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(18, 41, 61, .92), rgba(10, 26, 42, .92));
}

.page-products .prod-step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.7rem;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--red);
  margin-bottom: .65rem;
}

.page-products .prod-step h3 {
  margin: 0 0 .45rem;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
}

.page-products .prod-step p {
  margin: 0 0 .7rem;
  font-size: .87rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-products .prod-step details {
  border-top: 1px solid var(--line);
  padding-top: .35rem;
}

.page-products .prod-step summary {
  display: flex;
  align-items: center;
  min-height: 44px;
  cursor: pointer;
  list-style: none;
  font-size: .82rem;
  color: var(--paper);
  letter-spacing: .02em;
}

.page-products .prod-step summary::-webkit-details-marker {
  display: none;
}

.page-products .prod-step summary::before {
  content: "+";
  font-family: var(--font-mono);
  color: var(--amber);
  margin-right: .55rem;
  font-size: .95rem;
}

.page-products .prod-step details[open] summary::before {
  content: "–";
}

.page-products .prod-step summary:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-products .prod-step__note {
  margin: .1rem 0 .5rem;
  font-size: .81rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 兼容范围 ---------- */
.page-products .prod-compat__grid {
  display: grid;
  gap: clamp(1.3rem, 3vw, 2.2rem);
}

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

.page-products .prod-stat {
  background: var(--ink);
  padding: .95rem;
}

.page-products .prod-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 4.2vw, 2rem);
  line-height: 1.15;
  letter-spacing: .02em;
  color: var(--amber);
}

.page-products .prod-stat__label {
  display: block;
  margin-top: .35rem;
  font-size: .76rem;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 版本 ---------- */
.page-products .prod-band {
  margin-bottom: clamp(1.6rem, 3.4vw, 2.4rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.page-products .prod-timeline {
  display: grid;
  gap: 1.5rem;
}

.page-products .prod-node {
  position: relative;
  padding-top: 1.25rem;
}

.page-products .prod-node::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--line-strong);
}

.page-products .prod-node::after {
  content: "";
  position: absolute;
  top: -3px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--amber);
}

.page-products .prod-node__ver {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  letter-spacing: .06em;
  color: var(--paper);
}

.page-products .prod-node__era {
  display: block;
  margin: .25rem 0 .55rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--moss);
}

.page-products .prod-node p {
  margin: 0;
  font-size: .85rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-products .prod-more {
  margin: clamp(1.6rem, 3.4vw, 2.4rem) 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
  max-width: 66ch;
  font-size: .86rem;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 高频疑问 ---------- */
.page-products .prod-q {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .65rem;
}

.page-products .prod-q li {
  padding: .9rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--p-card);
  font-size: .86rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-products .prod-q strong {
  display: block;
  margin-bottom: .3rem;
  font-size: .93rem;
  font-weight: 700;
  color: var(--paper);
  line-height: 1.5;
}

/* ---------- 收尾 ---------- */
.page-products .prod-cta {
  margin-top: clamp(1.4rem, 3vw, 2rem);
  padding: clamp(1.1rem, 3vw, 1.9rem);
  border: 1px solid var(--line-red);
  border-radius: var(--radius);
  background: linear-gradient(118deg, rgba(215, 38, 61, .16), rgba(227, 169, 63, .07) 62%, rgba(10, 26, 42, .2));
  display: grid;
  gap: 1.1rem;
}

.page-products .prod-cta__title {
  margin: 0 0 .45rem;
  font-size: clamp(1.15rem, 3vw, 1.5rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -.005em;
}

.page-products .prod-cta__text {
  margin: 0;
  max-width: 54ch;
  font-size: .87rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-products .prod-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-products .prod-items {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-products .prod-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(1.8rem, 3vw, 3rem);
  }

  .page-products .prod-preview {
    position: sticky;
    top: 5.5rem;
  }

  .page-products .prod-steps__track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.1rem;
  }

  .page-products .prod-compat__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-products .prod-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.4rem;
  }

  .page-products .prod-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-products .prod-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1100px) {
  .page-products .prod-sec__head {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-products .tabs__btn,
  .page-products .prod-item,
  .page-products .prod-link {
    transition: none;
  }
}
<<<END>>>