.page-products {
  --pd-band: clamp(2.2rem, 5vw, 3.8rem);
  --pd-paper-soft: rgba(251, 248, 242, .78);
}

/* ---------- 面包屑 ---------- */
.page-products .pd-crumb {
  padding-top: clamp(1rem, 3vw, 1.6rem);
}

/* ---------- 首屏 ---------- */
.page-products .pd-hero {
  padding-block: clamp(1rem, 3vw, 1.8rem) clamp(1.8rem, 4.5vw, 3.2rem);
}

.page-products .pd-hero__inner {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
  align-items: end;
}

.page-products .pd-hero__title {
  margin: .55rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.15rem, 7vw, 4.1rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--deep);
}

.page-products .pd-hero__lede {
  margin: 1rem 0 0;
  max-width: 40ch;
  font-size: clamp(1rem, 2.2vw, 1.1rem);
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-products .pd-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.5rem;
}

.page-products .pd-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1rem 1.4rem;
  margin: clamp(1.6rem, 4vw, 2.3rem) 0 0;
  padding-top: 1.2rem;
  border-top: 1px solid var(--rule);
}

.page-products .pd-hero__stat {
  min-width: 0;
}

.page-products .pd-hero__stats dt {
  margin: 0 0 .3rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--dusk);
}

.page-products .pd-hero__stats dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 700;
  color: var(--deep);
  line-height: 1.2;
}

.page-products .pd-hero__figure {
  position: relative;
  margin: 0;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--rule-2);
  background: linear-gradient(155deg, var(--deep) 0%, var(--deep-2) 58%, var(--tide) 100%);
  box-shadow: var(--shadow-2);
}

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

@media (min-width: 900px) {
  .page-products .pd-hero__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }
  .page-products .pd-hero__figure {
    margin-bottom: -1.4rem;
  }
}

/* ---------- 通用区块节奏 ---------- */
.page-products .pd-band {
  padding-block: var(--pd-band);
}

/* ---------- 三层总览 ---------- */
.page-products .pd-overview {
  display: grid;
  gap: clamp(1.4rem, 3.4vw, 2.4rem);
}

.page-products .pd-overview__intro .section__title {
  margin-bottom: .7rem;
}

.page-products .pd-overview__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .9rem;
}

.page-products .pd-overview__item {
  padding: 1rem 1.1rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--tide);
  border-radius: var(--r-sm);
  box-shadow: var(--shadow-1);
}

.page-products .pd-overview__item:nth-child(2) {
  border-left-color: var(--coral);
}

.page-products .pd-overview__item:nth-child(3) {
  border-left-color: var(--aqua);
}

.page-products .pd-overview__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  color: var(--dusk);
}

.page-products .pd-overview__name {
  margin: .35rem 0 .4rem;
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.4vw, 1.3rem);
  font-weight: 700;
  color: var(--deep);
}

.page-products .pd-overview__desc {
  margin: 0;
  font-size: .96rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

@media (min-width: 900px) {
  .page-products .pd-overview {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }
  .page-products .pd-overview__intro {
    position: sticky;
    top: 6.5rem;
  }
}

/* ---------- 三层折叠 ---------- */
.page-products .pd-levels {
  display: grid;
  gap: .9rem;
  margin-top: clamp(1.3rem, 3vw, 2rem);
}

.page-products .pd-level {
  border: 1px solid var(--rule-2);
  border-radius: var(--r-md);
  background: var(--paper);
  box-shadow: var(--shadow-1);
  transition: box-shadow .3s var(--ease);
}

.page-products .pd-level[open] {
  box-shadow: var(--shadow-2);
}

.page-products .pd-level__summary {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .3rem .9rem;
  padding: 1.05rem 2.9rem 1.05rem 1.15rem;
  cursor: pointer;
  list-style: none;
}

.page-products .pd-level__summary::-webkit-details-marker {
  display: none;
}

.page-products .pd-level__summary::after {
  content: "+";
  position: absolute;
  right: 1.15rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--coral);
  transition: transform .3s var(--ease);
}

.page-products .pd-level[open] .pd-level__summary::after {
  content: "\2013";
  transform: translateY(-50%) rotate(90deg);
}

.page-products .pd-level__index {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .18em;
  color: var(--coral);
}

.page-products .pd-level__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.6vw, 1.42rem);
  font-weight: 700;
  color: var(--deep);
}

.page-products .pd-level__hint {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--dusk);
}

.page-products .pd-level__body {
  display: grid;
  gap: 1.1rem;
  padding: 0 1.15rem 1.35rem;
}

.page-products .pd-level__media {
  margin: 0;
  border-radius: var(--r-sm);
  overflow: hidden;
  border: 1px solid var(--rule);
  background: linear-gradient(150deg, var(--deep), var(--tide));
}

.page-products .pd-level__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

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

.page-products .pd-level__list li {
  position: relative;
  padding-left: 1.05rem;
  font-size: .96rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-products .pd-level__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: .52rem;
  height: 2px;
  background: var(--coral);
}

@media (min-width: 760px) {
  .page-products .pd-level__body {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: 1.4rem;
  }
}

/* ---------- 案例合集 ---------- */
.page-products .pd-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  border-bottom: 1px solid var(--rule-2);
  margin-top: clamp(1.2rem, 3vw, 1.8rem);
}

.page-products .pd-tab {
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .06em;
  padding: .55rem 1rem;
  color: var(--dusk);
  background: var(--sand);
  border: 1px solid var(--rule);
  border-bottom-color: transparent;
  border-radius: var(--r-sm) var(--r-sm) 0 0;
  margin-bottom: -1px;
}

.page-products .pd-tab--on {
  color: var(--deep);
  background: var(--paper);
  border-color: var(--rule-2);
  border-bottom-color: transparent;
  box-shadow: inset 0 3px 0 var(--coral);
}

.page-products .pd-caseshot {
  margin: clamp(1.1rem, 3vw, 1.6rem) 0 0;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--rule-2);
  background: linear-gradient(140deg, var(--deep-2), var(--tide));
  box-shadow: var(--shadow-1);
}

.page-products .pd-caseshot img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  margin-top: 1.5rem;
}

.page-products .pd-cases {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-products .pd-case {
  display: flex;
  flex-direction: column;
  gap: .45rem;
  border-left: 3px solid var(--tide);
}

.page-products .pd-case:nth-child(3n + 2) {
  border-left-color: var(--coral);
}

.page-products .pd-case:nth-child(3n) {
  border-left-color: var(--aqua);
}

.page-products .pd-case .card__title {
  margin: 0;
}

.page-products .pd-case .card__body {
  margin: 0;
}

.page-products .pd-case__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: auto 0 0;
  padding: .55rem 0 0;
}

.page-products [data-filter-item] {
  transition: opacity .28s var(--ease), transform .28s var(--ease);
}

.page-products [data-filter-item][hidden] {
  display: none;
}

@media (min-width: 700px) {
  .page-products .pd-cases {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .page-products .pd-cases {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 桌面端能力 ---------- */
.page-products .pd-cap {
  padding: clamp(1.5rem, 4vw, 2.9rem);
  border-radius: var(--r-md);
  border: 1px solid var(--rule-inv);
  background: linear-gradient(155deg, var(--deep) 0%, var(--deep-2) 62%, var(--tide) 135%);
  color: var(--paper);
  box-shadow: var(--shadow-2);
}

.page-products .pd-cap__kicker {
  margin: 0 0 .55rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .22em;
  color: var(--aqua);
}

.page-products .pd-cap__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4vw, 2.05rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--paper);
}

.page-products .pd-cap__list {
  list-style: none;
  margin: clamp(1.3rem, 3.4vw, 2.1rem) 0 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.page-products .pd-cap__item {
  padding-top: .9rem;
  border-top: 1px solid var(--rule-inv);
}

.page-products .pd-cap__num {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .18em;
  color: var(--glow);
}

.page-products .pd-cap__name {
  margin: .35rem 0 .45rem;
  font-family: var(--font-display);
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--paper);
}

.page-products .pd-cap__desc {
  margin: 0;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--pd-paper-soft);
}

@media (min-width: 760px) {
  .page-products .pd-cap__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.4rem 2rem;
  }
}

/* ---------- 场景选择 ---------- */
.page-products .pd-fit {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.2rem, 3vw, 1.8rem);
}

.page-products .pd-fit__card {
  display: flex;
  flex-direction: column;
  gap: .55rem;
  padding: 1.25rem;
  background: var(--sand);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
}

.page-products .pd-fit__card:nth-child(2) {
  background: var(--paper);
  box-shadow: var(--shadow-1);
}

.page-products .pd-fit__who {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--coral);
}

.page-products .pd-fit__head {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.08rem, 2.4vw, 1.25rem);
  font-weight: 700;
  color: var(--deep);
}

.page-products .pd-fit__desc {
  margin: 0 0 .6rem;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-products .pd-fit__card .btn {
  align-self: flex-start;
  margin-top: auto;
}

@media (min-width: 840px) {
  .page-products .pd-fit {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 收束 ---------- */
.page-products .pd-next {
  display: grid;
  gap: 1.2rem;
  padding-top: clamp(1.4rem, 3.4vw, 2.2rem);
  border-top: 1px solid var(--rule-2);
}

.page-products .pd-next__title {
  margin: 0 0 .6rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.4vw, 1.9rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--deep);
}

.page-products .pd-next__desc {
  margin: 0;
  max-width: 46ch;
  font-size: .97rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-products .pd-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}

@media (min-width: 820px) {
  .page-products .pd-next {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: 2rem;
  }
  .page-products .pd-next__actions {
    justify-content: flex-end;
  }
}
<<<END>>>