.page-products {
  --pd-step-w: 78%;
  background: var(--vi-ivory-50);
  color: var(--vi-graphite-900);
  padding-bottom: clamp(48px, 8vw, 96px);
}

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

/* ---------- 首屏入口台 ---------- */
.pd-hero {
  padding-top: clamp(16px, 3vw, 36px);
}

.pd-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
}

.pd-hero h1 {
  font-family: var(--vi-font-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 6vw, 3.3rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
  margin: 12px 0 18px;
  color: var(--vi-ink-950);
}

.pd-hero__lede {
  max-width: 48ch;
  color: rgba(28, 35, 32, 0.82);
}

.pd-select {
  margin-top: clamp(22px, 3vw, 32px);
}

.pd-select__label {
  margin: 0 0 10px;
  font-family: var(--vi-font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--vi-moss-600);
}

.pd-select__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pd-chip {
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  background: var(--vi-paper-0);
  border: 1px solid rgba(28, 35, 32, 0.2);
  color: var(--vi-graphite-900);
  font-size: 0.94rem;
  text-decoration: none;
  transition: border-color 180ms ease, background-color 180ms ease, color 180ms ease;
}

.pd-chip:hover,
.pd-chip:focus-visible {
  border-color: var(--vi-gold-500);
  background: var(--vi-ivory-100);
  color: var(--vi-ink-950);
}

.pd-chip:focus-visible {
  outline: 2px solid var(--vi-cyan-500);
  outline-offset: 2px;
}

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

.pd-hero__hint {
  margin: 16px 0 0;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--vi-steel-400);
  border-left: 2px solid var(--vi-gold-200);
  padding-left: 12px;
  max-width: 42ch;
}

.pd-hero__art {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.pd-hero__figure {
  margin: 0;
  border: 2px solid var(--vi-ink-800);
  background: var(--vi-ink-800);
  overflow: hidden;
  box-shadow: var(--vi-shadow-hard);
}

.pd-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.pd-minilist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.pd-minilist li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--vi-ink-800);
  color: var(--vi-ivory-50);
  border-left: 3px solid var(--vi-gold-500);
  font-size: 0.92rem;
}

.pd-minilist .vi-mono {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--vi-gold-200);
}

/* ---------- 区块标题 ---------- */
.pd-head__text {
  min-width: 0;
}

.pd-head__text h2 {
  font-family: var(--vi-font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 3.6vw, 2.1rem);
  line-height: 1.28;
  color: var(--vi-ink-950);
  margin: 10px 0 12px;
}

.pd-head__text .vi-lede {
  max-width: 62ch;
  color: rgba(28, 35, 32, 0.8);
}

/* ---------- 移动端三步 ---------- */
.pd-steps__rail {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(24px, 4vw, 36px);
}

.pd-steps__figure {
  margin: 0;
  border: 2px solid var(--vi-ink-800);
  overflow: hidden;
  box-shadow: var(--vi-shadow-gold);
  max-width: 420px;
}

.pd-steps__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.pd-stepcards {
  list-style: none;
  margin: 0;
  padding: 0 2px 12px;
  display: flex;
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.pd-stepcards--narrow {
  padding-bottom: 4px;
}

.pd-stepcard {
  flex: 0 0 var(--pd-step-w);
  scroll-snap-align: start;
  background: var(--vi-paper-0);
  border: 2px solid var(--vi-ink-800);
  padding: 20px 18px 22px;
  min-width: 0;
}

.pd-stepcard__num {
  display: inline-block;
  font-family: var(--vi-font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  padding: 3px 9px;
  background: var(--vi-ink-950);
  color: var(--vi-gold-200);
}

.pd-stepcard h3 {
  font-family: var(--vi-font-display);
  font-weight: 700;
  font-size: 1.1rem;
  line-height: 1.4;
  margin: 14px 0 8px;
  color: var(--vi-ink-950);
}

.pd-stepcard p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.78;
  color: rgba(28, 35, 32, 0.78);
}

/* ---------- 收藏入口 V3 ---------- */
.pd-collect__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(24px, 4vw, 36px);
  align-items: start;
}

.pd-collect__figure {
  margin: 0;
  border: 2px solid var(--vi-ink-800);
  overflow: hidden;
  box-shadow: var(--vi-shadow-hard);
}

.pd-collect__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.pd-collect__body {
  min-width: 0;
}

.pd-pathbox {
  margin-top: 20px;
  background: var(--vi-ink-950);
  color: var(--vi-ivory-50);
  padding: 20px;
  border-left: 3px solid var(--vi-gold-500);
}

.pd-pathbox__label {
  margin: 0 0 10px;
  font-family: var(--vi-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--vi-steel-400);
}

.pd-pathbox__text {
  margin: 0 0 16px;
  font-family: var(--vi-font-mono);
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--vi-gold-200);
  word-break: break-word;
}

.page-products .vi-copy {
  display: inline-block;
  font-family: var(--vi-font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  padding: 9px 16px;
  background: transparent;
  border: 1px solid var(--vi-gold-500);
  color: var(--vi-gold-200);
  cursor: pointer;
  transition: background-color 180ms ease, color 180ms ease;
}

.page-products .vi-copy:hover,
.page-products .vi-copy:focus-visible {
  background: var(--vi-gold-500);
  color: var(--vi-ink-950);
}

.page-products .vi-copy.is-copied {
  background: var(--vi-gold-500);
  color: var(--vi-ink-950);
}

/* ---------- 材质过渡带 ---------- */
.pd-texture {
  margin: clamp(32px, 6vw, 64px) 0 0;
  border-top: 2px solid var(--vi-ink-800);
  border-bottom: 2px solid var(--vi-ink-800);
  overflow: hidden;
}

.pd-texture img {
  display: block;
  width: 100%;
  height: clamp(84px, 12vw, 156px);
  max-width: 100%;
  object-fit: cover;
}

.pd-texture figcaption {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--vi-moss-600);
  padding: 8px clamp(16px, 4vw, 40px);
  background: var(--vi-ivory-100);
}

/* ---------- 下载前核对 ---------- */
.pd-check__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(24px, 4vw, 36px);
  align-items: start;
}

.pd-check__figure {
  margin: 0;
  border: 2px solid var(--vi-ink-800);
  overflow: hidden;
  background: var(--vi-ivory-100);
}

.pd-check__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.pd-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.pd-checklist li {
  display: flex;
  gap: 14px;
  padding: 16px 18px;
  background: var(--vi-paper-0);
  border-left: 3px solid var(--vi-moss-600);
}

.pd-checkmark {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  background: var(--vi-gold-500);
  color: var(--vi-ink-950);
  font-family: var(--vi-font-mono);
  font-size: 0.78rem;
  line-height: 1;
}

.pd-checklist strong {
  display: block;
  font-size: 0.96rem;
  margin-bottom: 5px;
  color: var(--vi-ink-950);
}

.pd-checklist p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.76;
  color: rgba(28, 35, 32, 0.76);
}

/* ---------- 版本对照 ---------- */
.pd-matrix {
  margin-top: clamp(26px, 4vw, 40px);
  display: grid;
  gap: 1px;
  background: rgba(28, 35, 32, 0.14);
  border: 1px solid rgba(28, 35, 32, 0.14);
}

.pd-matrix__head {
  display: none;
}

.pd-matrix__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 16px;
  background: var(--vi-paper-0);
}

.pd-matrix__cell {
  display: block;
  min-width: 0;
}

.pd-matrix__k {
  display: block;
  font-family: var(--vi-font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--vi-steel-400);
  margin-bottom: 3px;
}

.pd-matrix__v {
  display: block;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--vi-graphite-900);
  word-break: break-word;
}

.pd-matrix__v.vi-mono {
  font-size: 0.86rem;
  letter-spacing: 0.06em;
  color: var(--vi-moss-600);
}

/* ---------- 常见问题 ---------- */
.pd-faq {
  margin-top: clamp(22px, 3vw, 32px);
  display: grid;
  gap: 10px;
}

.pd-faq details {
  background: var(--vi-paper-0);
  border: 1px solid rgba(28, 35, 32, 0.14);
}

.pd-faq details[open] {
  border-color: var(--vi-gold-200);
}

.pd-faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--vi-ink-950);
  cursor: pointer;
  list-style: none;
}

.pd-faq summary::-webkit-details-marker {
  display: none;
}

.pd-faq summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--vi-font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--vi-gold-500);
}

.pd-faq details[open] summary::after {
  content: "–";
}

.pd-faq details p {
  margin: 0;
  padding: 0 18px 18px;
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(28, 35, 32, 0.78);
}

.pd-next {
  margin-top: clamp(26px, 4vw, 40px);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-products {
    --pd-step-w: 46%;
  }

  .pd-matrix__row {
    grid-template-columns: 1fr 1fr;
    gap: 12px 18px;
  }

  .pd-matrix__cell:last-child {
    grid-column: 1 / -1;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-products {
    --pd-step-w: auto;
  }

  .pd-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .pd-minilist li:nth-child(2) {
    margin-inline-start: 26px;
  }

  .pd-minilist li:nth-child(3) {
    margin-inline-start: 52px;
  }

  .pd-steps__rail {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }

  .pd-steps__figure {
    max-width: none;
  }

  .pd-stepcards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    overflow: visible;
    padding: 0;
    gap: 18px;
  }

  .pd-stepcard {
    flex: none;
  }

  .pd-stepcards--narrow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .pd-collect__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .pd-check__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }

  .pd-matrix__head {
    display: grid;
    grid-template-columns: 1fr 1fr 1.6fr;
    gap: 18px;
    padding: 12px 18px;
    background: var(--vi-ink-800);
    color: var(--vi-ivory-50);
    font-family: var(--vi-font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.12em;
  }

  .pd-matrix__row {
    grid-template-columns: 1fr 1fr 1.6fr;
    align-items: center;
    gap: 18px;
    padding: 14px 18px;
  }

  .pd-matrix__cell:last-child {
    grid-column: auto;
  }

  .pd-matrix__k {
    display: none;
  }
}

/* ---------- 动效退让 ---------- */
@media (prefers-reduced-motion: reduce) {
  .pd-chip,
  .page-products .vi-copy {
    transition: none;
  }
}
<<<END>>>