.page-products {
  --pf-gap: clamp(1.25rem, 3vw, 2.5rem);
  --pf-edge: rgba(123, 77, 255, 0.5);
  --pf-line: rgba(245, 242, 233, 0.14);
  padding-bottom: clamp(2.5rem, 7vw, 5rem);
}

/* ---------- 首屏 ---------- */
.page-products .pf-hero {
  position: relative;
  padding-block: clamp(1.75rem, 5vw, 4rem) clamp(1.5rem, 4vw, 3rem);
  display: grid;
  gap: clamp(1rem, 2.5vw, 1.75rem);
}
.page-products .pf-hero__title {
  max-width: 20ch;
  margin: 0;
}
.page-products .pf-hero__lede {
  max-width: 60ch;
  margin: 0;
}

.page-products .pf-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--pf-line);
  border: 3px solid var(--charcoal);
  box-shadow: var(--shadow-hard);
}
.page-products .pf-stats__item {
  background: var(--felt-deep);
  padding: clamp(0.85rem, 2.2vw, 1.4rem);
  display: grid;
  gap: 0.35rem;
}
.page-products .pf-stats__label {
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  color: var(--sage);
}
.page-products .pf-stats__num {
  margin: 0;
  font-size: clamp(1.75rem, 5.5vw, 2.75rem);
  line-height: 1;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: -0.02em;
}
.page-products .pf-stats__num span {
  font-size: 0.9rem;
  margin-left: 0.35em;
  color: var(--neon-soft);
  letter-spacing: 0.05em;
}

.page-products .pf-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.page-products .pf-jump__link {
  display: inline-block;
  padding: 0.45rem 0.9rem;
  border: 2px solid var(--pf-edge);
  border-radius: 999px;
  font-size: 0.875rem;
  color: var(--porcelain);
  text-decoration: none;
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease),
    background-color 0.24s var(--ease);
}
.page-products .pf-jump__link:hover,
.page-products .pf-jump__link:focus-visible {
  transform: translateY(-3px);
  border-color: var(--gold);
  background: rgba(123, 77, 255, 0.18);
}

/* ---------- 章节骨架 ---------- */
.page-products .pf-sec {
  padding-block: clamp(2.25rem, 5vw, 4rem);
}
.page-products .pf-sec__head {
  display: grid;
  gap: 0.6rem;
  margin-bottom: clamp(1.5rem, 3.5vw, 2.5rem);
}
.page-products .pf-sec__head .lede {
  max-width: 66ch;
  margin: 0;
}

.page-products .pf-figure {
  margin: clamp(1.5rem, 3.5vw, 2.75rem) 0 0;
}
.page-products .pf-figure .figure__media {
  border: 3px solid var(--charcoal);
  box-shadow: var(--shadow-hard-lg);
  outline: 1px solid var(--pf-edge);
  outline-offset: -6px;
}
.page-products .pf-figure .figure__caption {
  margin-top: 0.85rem;
  color: var(--sage);
  font-size: 0.8125rem;
  line-height: 1.7;
  max-width: 62ch;
}

/* ---------- 01 使用形态 ---------- */
.page-products .pf-forms {
  display: grid;
  gap: var(--pf-gap);
}
.page-products .pf-forms__intro {
  display: grid;
  gap: 0.9rem;
  align-content: start;
}
.page-products .pf-forms__intro p {
  margin: 0;
}

.page-products .pf-forms__stack {
  display: grid;
  gap: clamp(1rem, 2.4vw, 1.6rem);
}
.page-products .pf-card {
  position: relative;
  padding: clamp(1.15rem, 3vw, 1.85rem);
  background: linear-gradient(155deg, var(--felt-deep), var(--felt));
  border: 3px solid var(--charcoal);
  box-shadow: var(--shadow-hard);
  transition: transform 0.24s var(--ease), box-shadow 0.24s var(--ease);
}
.page-products .pf-card::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--neon), var(--gold));
}
.page-products .pf-card:hover,
.page-products .pf-card:focus-within {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hard-lg);
}
.page-products .pf-card__tag {
  margin: 0 0 0.55rem;
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  color: var(--neon-soft);
  text-transform: uppercase;
}
.page-products .pf-card .h-card {
  margin: 0 0 0.6rem;
}
.page-products .pf-card p:last-child {
  margin: 0;
}

/* ---------- 02 房间卡片流 ---------- */
.page-products .pf-rail {
  display: flex;
  gap: clamp(0.75rem, 2vw, 1.25rem);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 0.35rem 0.25rem 1.25rem;
  -webkit-overflow-scrolling: touch;
}
.page-products .pf-rail:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 4px;
}
.page-products .pf-rail::-webkit-scrollbar {
  height: 6px;
}
.page-products .pf-rail::-webkit-scrollbar-thumb {
  background: var(--neon);
  border-radius: 999px;
}
.page-products .pf-room {
  flex: 0 0 min(76vw, 300px);
  scroll-snap-align: start;
  padding: 1.15rem 1.25rem 1.4rem;
  background: rgba(7, 35, 26, 0.9);
  border: 3px solid var(--charcoal);
  box-shadow: 5px 5px 0 rgba(4, 14, 11, 0.5);
  display: grid;
  gap: 0.5rem;
  align-content: start;
  transition: transform 0.24s var(--ease);
}
.page-products .pf-room:nth-child(even) {
  margin-top: 1.25rem;
  border-top-color: var(--neon);
}
.page-products .pf-room:nth-child(3n) {
  margin-top: 0.5rem;
}
.page-products .pf-room:hover {
  transform: translateY(-4px);
}
.page-products .pf-room__tag {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--gold);
}
.page-products .pf-room__meta {
  margin: 0;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--neon-soft);
}
.page-products .pf-room__body {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
}

/* ---------- 03 桌面端区域 ---------- */
.page-products .pf-zones {
  display: grid;
  gap: clamp(0.9rem, 2.2vw, 1.4rem);
  margin-top: clamp(1.5rem, 3.5vw, 2.5rem);
}
.page-products .pf-zone {
  border-left: 5px solid var(--neon);
  background: rgba(7, 35, 26, 0.72);
  padding: 1rem 1.15rem 1.2rem;
  display: grid;
  gap: 0.45rem;
}
.page-products .pf-zone:nth-child(2) {
  border-left-color: var(--gold);
}
.page-products .pf-zone:nth-child(3) {
  border-left-color: var(--neon-soft);
}
.page-products .pf-zone__no {
  margin: 0;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--gold);
  letter-spacing: 0.05em;
}
.page-products .pf-zone .h-card {
  margin: 0;
}
.page-products .pf-zone p:last-child {
  margin: 0;
  font-size: 0.9375rem;
}

/* ---------- 04 移动端预览 ---------- */
.page-products .pf-mobile {
  display: grid;
  gap: var(--pf-gap);
}
.page-products .pf-figure--phone {
  margin-top: 0;
}
.page-products .pf-figure--phone .figure__media {
  max-width: 320px;
  margin: 0 auto;
}
.page-products .pf-mobile__steps {
  display: grid;
  gap: 1rem;
  align-content: start;
}
.page-products .pf-mobile__steps .h-card {
  margin: 0;
}
.page-products .pf-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
  counter-reset: pf-step;
}
.page-products .pf-steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  align-items: start;
  padding: 0.8rem 0.9rem;
  background: var(--porcelain);
  color: var(--charcoal);
  border: 2px solid var(--charcoal);
  box-shadow: 4px 4px 0 rgba(4, 14, 11, 0.45);
  font-size: 0.9375rem;
  line-height: 1.7;
}
.page-products .pf-steps__no {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--neon);
  padding-top: 0.2rem;
}
.page-products .pf-mobile__steps .note {
  margin: 0;
  color: var(--sage);
}
.page-products .pf-mobile__steps .btn {
  justify-self: start;
}

/* ---------- 05 赛季段位 ---------- */
.page-products .pf-season {
  display: grid;
  gap: var(--pf-gap);
}
.page-products .pf-season__bar {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}
.page-products .pf-tier {
  position: relative;
  padding: 0.85rem 0.75rem 1rem;
  background: rgba(7, 35, 26, 0.85);
  border: 2px solid var(--charcoal);
  border-top: 4px solid var(--sage);
  display: grid;
  gap: 0.25rem;
  align-content: start;
  transition: transform 0.24s var(--ease), border-top-color 0.24s var(--ease);
}
.page-products .pf-tier:nth-child(n + 3) {
  border-top-color: var(--neon);
}
.page-products .pf-tier:nth-child(n + 6) {
  border-top-color: var(--gold);
}
.page-products .pf-tier--top {
  background: linear-gradient(165deg, rgba(231, 183, 95, 0.22), rgba(7, 35, 26, 0.95));
}
.page-products .pf-tier:hover,
.page-products .pf-tier:focus-within,
.page-products .pf-tier:focus {
  transform: translateY(-4px);
  border-top-color: var(--gold-light);
  outline: none;
  box-shadow: 0 0 0 3px rgba(231, 183, 95, 0.4);
}
.page-products .pf-tier__no {
  font-size: 0.75rem;
  color: var(--neon-soft);
  letter-spacing: 0.16em;
}
.page-products .pf-tier__name {
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--porcelain);
}
.page-products .pf-tier__note {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--sage);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.24s var(--ease), opacity 0.24s var(--ease);
}
.page-products .pf-tier:hover .pf-tier__note,
.page-products .pf-tier:focus .pf-tier__note,
.page-products .pf-tier:focus-within .pf-tier__note {
  max-height: 5.5rem;
  opacity: 1;
}
.page-products .pf-season__side {
  display: grid;
  gap: 0.9rem;
  align-content: start;
}
.page-products .pf-season__side p {
  margin: 0;
}
.page-products .pf-season__side .btn {
  justify-self: start;
}

/* ---------- 06 收藏夹与同步 ---------- */
.page-products .pf-sync {
  display: grid;
  gap: var(--pf-gap);
}
.page-products .pf-sync__folds {
  display: grid;
  gap: 0.65rem;
  align-content: start;
}
.page-products .pf-fold {
  border: 2px solid var(--charcoal);
  background: var(--porcelain);
  color: var(--charcoal);
  box-shadow: 4px 4px 0 rgba(4, 14, 11, 0.45);
}
.page-products .pf-fold__summary {
  cursor: pointer;
  list-style: none;
  padding: 0.8rem 1rem;
  font-weight: 700;
  font-size: 0.9375rem;
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
}
.page-products .pf-fold__summary::-webkit-details-marker {
  display: none;
}
.page-products .pf-fold__summary .mono {
  font-size: 0.75rem;
  color: var(--neon);
  letter-spacing: 0.12em;
}
.page-products .pf-fold__summary::after {
  content: "+";
  margin-left: auto;
  font-weight: 700;
  color: var(--neon);
}
.page-products .pf-fold[open] .pf-fold__summary::after {
  content: "–";
}
.page-products .pf-fold__summary:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: -3px;
}
.page-products .pf-fold__chips {
  list-style: none;
  margin: 0;
  padding: 0 1rem 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}
.page-products .pf-fold__chips li {
  padding: 0.3rem 0.7rem;
  border: 2px solid var(--charcoal);
  background: #fff;
  font-size: 0.8125rem;
}
.page-products .pf-sync__folds .note {
  margin: 0.4rem 0 0;
  color: var(--sage);
}
.page-products .pf-figure--duo {
  margin-top: 0;
}

.page-products .pf-tips {
  display: grid;
  gap: clamp(0.9rem, 2.2vw, 1.4rem);
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}
.page-products .pf-tip {
  padding: 1.1rem 1.2rem 1.3rem;
  border: 3px solid var(--charcoal);
  background: rgba(7, 35, 26, 0.8);
  box-shadow: 5px 5px 0 rgba(4, 14, 11, 0.5);
  display: grid;
  gap: 0.5rem;
  align-content: start;
  transition: transform 0.24s var(--ease);
}
.page-products .pf-tip:hover,
.page-products .pf-tip:focus-within {
  transform: translateY(-5px);
}
.page-products .pf-tip .h-card {
  margin: 0;
}
.page-products .pf-tip p {
  margin: 0;
  font-size: 0.9375rem;
}
.page-products .pf-tip__link {
  color: var(--gold);
  font-size: 0.875rem;
  text-decoration: none;
  border-bottom: 2px solid rgba(231, 183, 95, 0.5);
  justify-self: start;
}
.page-products .pf-tip__link:hover,
.page-products .pf-tip__link:focus-visible {
  border-bottom-color: var(--gold-light);
  color: var(--gold-light);
}

/* ---------- 收尾 ---------- */
.page-products .pf-outro {
  padding-block: clamp(2.25rem, 5vw, 4rem) clamp(1rem, 3vw, 2rem);
  display: grid;
  gap: 0.9rem;
  justify-items: start;
}
.page-products .pf-outro .h-section {
  margin: 0;
}
.page-products .pf-outro .lede {
  margin: 0;
  max-width: 62ch;
}
.page-products .pf-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.35rem;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-products .pf-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-products .pf-season__bar {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-products .pf-zones {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-products .pf-tips {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-products .pf-forms {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
  .page-products .pf-forms__intro {
    position: sticky;
    top: calc(var(--header-h) + 1.75rem);
  }
  .page-products .pf-forms__stack .pf-card--offset {
    margin-left: clamp(1.5rem, 5vw, 4.5rem);
  }
  .page-products .pf-forms__stack .pf-card:not(.pf-card--offset) {
    margin-right: clamp(1rem, 4vw, 3.5rem);
  }

  .page-products .pf-rail {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    overflow: visible;
    padding-inline: 0;
  }
  .page-products .pf-room {
    flex: none;
  }

  .page-products .pf-zones {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-products .pf-zone:nth-child(2) {
    transform: translateY(-1.5rem);
  }

  .page-products .pf-mobile {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-products .pf-season {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
  .page-products .pf-season__bar {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .pf-sync {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
  .page-products .pf-tips {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-products .pf-tip:nth-child(2) {
    transform: translateY(-1.25rem);
  }
}

@media (min-width: 1180px) {
  .page-products .pf-season__bar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-products .pf-tier:hover .pf-tier__note,
  .page-products .pf-tier:focus .pf-tier__note,
  .page-products .pf-tier:focus-within .pf-tier__note {
    max-height: 6rem;
  }
}
<<<END>>>