.page-products {
  padding-top: clamp(16px, 3vw, 28px);
  padding-bottom: clamp(64px, 9vw, 120px);
  color: var(--paper);
  overflow-x: clip;
}

.page-products .prd-crumb {
  margin-bottom: clamp(16px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-products .prd-hero {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: end;
}

.page-products .prd-hero__title {
  margin: 8px 0 0;
  font-size: clamp(32px, 6.4vw, 60px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.page-products .prd-hero__lede {
  margin: clamp(14px, 2vw, 20px) 0 0;
  max-width: 58ch;
  color: var(--gray-300);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
}

.page-products .prd-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: clamp(22px, 3vw, 30px) 0 0;
}

.page-products .prd-stat {
  padding: 14px 16px;
  border: 1px solid var(--line-mid);
  border-radius: var(--r-md);
  background: var(--ink-800);
}

.page-products .prd-stat dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gray-300);
}

.page-products .prd-stat dd {
  margin: 6px 0 0;
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-products .prd-stat__unit {
  margin-left: 4px;
  font-size: 12px;
  font-weight: 500;
  color: var(--cyan-400);
}

.page-products .prd-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

/* ---------- 通用图 ---------- */
.page-products .prd-figure {
  margin: 0;
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line-mid);
  background: linear-gradient(155deg, var(--ink-700), var(--ink-800) 70%);
}

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

.page-products .prd-figure--hero img {
  aspect-ratio: 4 / 3;
}

.page-products .prd-figure--wide img {
  aspect-ratio: 4 / 3;
}

.page-products .prd-figure--texture img {
  aspect-ratio: 3 / 2;
}

.page-products .prd-figure__caption {
  padding: 10px 16px 14px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--gray-300);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 章节骨架 ---------- */
.page-products .prd-section {
  margin-top: clamp(56px, 8vw, 104px);
}

.page-products .prd-section__head {
  max-width: 70ch;
  margin-bottom: clamp(22px, 3.4vw, 36px);
}

.page-products .prd-h2 {
  margin: 10px 0 0;
  font-size: clamp(24px, 4vw, 40px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--paper);
}

.page-products .prd-section__lede {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--gray-300);
}

/* ---------- 结构说明 ---------- */
.page-products .prd-struct {
  display: grid;
  gap: 14px;
}

.page-products .prd-struct__item {
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line-mid);
  border-radius: var(--r-lg);
  background: var(--ink-800);
}

.page-products .prd-struct__item:nth-child(2) {
  border-color: rgba(47, 227, 208, 0.34);
}

.page-products .prd-struct__item h3 {
  margin: 0 0 10px;
  font-size: clamp(17px, 2.2vw, 21px);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-products .prd-struct__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--gray-300);
}

.page-products .prd-struct__tag {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

/* ---------- 编号轨道 + 栏目卡 ---------- */
.page-products .prd-index {
  display: grid;
  gap: 18px;
}

.page-products .prd-rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 2px 8px;
  scrollbar-width: none;
}

.page-products .prd-rail::-webkit-scrollbar {
  display: none;
}

.page-products .prd-rail__item {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 1px solid var(--line-mid);
  background: var(--ink-800);
  color: var(--gray-300);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: border-color var(--dur-1) var(--ease), background-color var(--dur-1) var(--ease),
    color var(--dur-1) var(--ease);
}

.page-products .prd-rail__item:hover,
.page-products .prd-rail__item:focus-visible {
  border-color: var(--orange-500);
  background: var(--orange-500);
  color: var(--ink-black);
  outline: none;
}

.page-products .prd-panels {
  display: grid;
  gap: 12px;
}

.page-products .prd-card {
  border: 1px solid var(--line-mid);
  border-radius: var(--r-lg);
  background: var(--ink-800);
  overflow: hidden;
  transition: border-color var(--dur-1) var(--ease);
}

.page-products .prd-card:hover,
.page-products .prd-card[open] {
  border-color: rgba(255, 106, 26, 0.5);
}

.page-products .prd-card summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: clamp(14px, 2.4vw, 20px) clamp(14px, 2.6vw, 22px);
  cursor: pointer;
  list-style: none;
}

.page-products .prd-card summary::-webkit-details-marker {
  display: none;
}

.page-products .prd-card summary:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: -3px;
}

.page-products .prd-card__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--orange-500);
  padding: 6px 9px;
  border-radius: 999px;
  border: 1px solid rgba(255, 106, 26, 0.4);
  line-height: 1;
}

.page-products .prd-card__head {
  display: block;
  min-width: 0;
}

.page-products .prd-card__title {
  display: block;
  font-size: clamp(16px, 2.1vw, 19px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-products .prd-card__desc {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray-300);
}

.page-products .prd-card__chev {
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--cyan-400);
  border-bottom: 2px solid var(--cyan-400);
  transform: rotate(45deg) translateY(-2px);
  transition: transform var(--dur-2) var(--ease), border-color var(--dur-1) var(--ease);
}

.page-products .prd-card[open] .prd-card__chev {
  transform: rotate(-135deg) translateY(-2px);
  border-color: var(--orange-500);
}

.page-products .prd-card__body {
  padding: 0 clamp(14px, 2.6vw, 22px) clamp(16px, 2.6vw, 22px);
  border-top: 1px solid var(--line-soft);
  margin-top: 2px;
  padding-top: 16px;
}

.page-products .prd-topics {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .prd-topics li {
  padding: 9px 12px;
  border-radius: 999px;
  border: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.5;
  color: var(--paper);
  background: rgba(18, 49, 77, 0.55);
}

.page-products .prd-card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 208, 0.45);
  padding-bottom: 2px;
  transition: color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease);
}

.page-products .prd-card__link:hover {
  color: var(--orange-300);
  border-color: var(--orange-300);
}

.page-products .prd-index__figure {
  margin-top: clamp(20px, 3vw, 30px);
}

/* ---------- 检索 ---------- */
.page-products .prd-search {
  display: grid;
  gap: 20px;
  align-items: start;
}

.page-products .prd-ways {
  display: grid;
  gap: 12px;
}

.page-products .prd-way {
  padding: 16px 18px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-mid);
  background: var(--ink-800);
}

.page-products .prd-way__k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan-400);
}

.page-products .prd-way__demo {
  margin: 8px 0 10px;
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(255, 106, 26, 0.14);
  border: 1px solid rgba(255, 106, 26, 0.45);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--orange-300);
}

.page-products .prd-way p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray-300);
}

.page-products .prd-chips-wrap {
  margin-top: clamp(20px, 3vw, 28px);
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid rgba(47, 227, 208, 0.28);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(18, 49, 77, 0.7), rgba(6, 22, 38, 0.5));
}

.page-products .prd-chips__label {
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--gray-300);
}

.page-products .prd-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.page-products .prd-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border-radius: 999px;
  border: 1px solid var(--cyan-400);
  color: var(--cyan-400);
  font-size: 13px;
  text-decoration: none;
  transition: background-color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease),
    color var(--dur-1) var(--ease);
}

.page-products .prd-chip__n {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  opacity: 0.85;
}

.page-products .prd-chip:hover,
.page-products .prd-chip:focus-visible {
  background: var(--orange-500);
  border-color: var(--orange-500);
  color: var(--ink-black);
  outline: none;
}

/* ---------- 换设备 ---------- */
.page-products .prd-switch {
  display: grid;
  gap: 20px;
  align-items: start;
}

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

.page-products .prd-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  border-radius: var(--r-md);
  border-left: 3px solid var(--orange-500);
  background: var(--ink-800);
}

.page-products .prd-step__n {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--orange-500);
  line-height: 1.5;
}

.page-products .prd-step__body h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-products .prd-step__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--gray-300);
}

/* ---------- 下一步 ---------- */
.page-products .prd-next {
  display: grid;
  gap: 16px;
  align-items: start;
}

.page-products .prd-next__cards {
  display: grid;
  gap: 14px;
}

.page-products .prd-next__card {
  display: block;
  padding: clamp(18px, 3vw, 26px);
  border-radius: var(--r-lg);
  border: 1px solid var(--line-mid);
  background: var(--ink-800);
  text-decoration: none;
  color: var(--paper);
  transition: border-color var(--dur-1) var(--ease), transform var(--dur-2) var(--ease);
}

.page-products .prd-next__card:hover {
  border-color: rgba(255, 106, 26, 0.6);
  transform: translateY(-3px);
}

.page-products .prd-next__card--alt {
  border-color: rgba(47, 227, 208, 0.3);
}

.page-products .prd-next__kicker {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan-400);
}

.page-products .prd-next__card h3 {
  margin: 0 0 10px;
  font-size: clamp(17px, 2.4vw, 22px);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-products .prd-next__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--gray-300);
}

.page-products .prd-next__go {
  display: inline-block;
  margin-top: 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--orange-300);
}

/* ---------- 中屏 ---------- */
@media (min-width: 640px) {
  .page-products .prd-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-products .prd-ways {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-products .prd-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-products .prd-struct {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .prd-struct__item:nth-child(2) {
    transform: translateY(22px);
  }

  .page-products .prd-index {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 28px;
  }

  .page-products .prd-rail {
    flex-direction: column;
    overflow: visible;
    position: sticky;
    top: 28px;
    padding: 0;
  }

  .page-products .prd-search {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 26px;
  }

  .page-products .prd-switch {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 28px;
  }

  .page-products .prd-next {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .prd-rail__item,
  .page-products .prd-card,
  .page-products .prd-card__chev,
  .page-products .prd-chip,
  .page-products .prd-next__card {
    transition: none;
  }

  .page-products .prd-next__card:hover {
    transform: none;
  }
}
<<<END>>>