.page-products {
  --pp-pad: clamp(48px, 7vw, 104px);
  --pp-line: rgba(200, 214, 226, .16);
  --pp-line-ink: #D9D2C4;
}

/* ---------- 面包屑 ---------- */
.page-products .pp-crumbs {
  padding-top: calc(var(--bar-h) + 18px);
  padding-bottom: 6px;
}

.page-products .pp-crumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .04em;
}

.page-products .pp-crumbs__list .breadcrumbs__item {
  color: var(--c-muted);
}

.page-products .pp-crumbs__list a {
  color: var(--c-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-products .pp-crumbs__list a:hover,
.page-products .pp-crumbs__list a:focus-visible {
  color: var(--c-gold);
  border-bottom-color: var(--c-gold);
}

.page-products .pp-crumbs__list [aria-current="page"] {
  color: var(--c-gold);
}

/* ---------- 首屏 ---------- */
.page-products .pp-hero {
  position: relative;
  padding: clamp(40px, 6vw, 88px) 0 clamp(56px, 8vw, 112px);
  overflow: hidden;
}

.page-products .pp-hero::before,
.page-products .pp-hero::after {
  content: "";
  position: absolute;
  z-index: 0;
  pointer-events: none;
}

.page-products .pp-hero::before {
  top: -18%;
  right: -12%;
  width: min(58vw, 760px);
  aspect-ratio: 1;
  background: linear-gradient(140deg, rgba(20, 69, 110, .78), rgba(11, 27, 43, 0) 72%);
  clip-path: polygon(28% 0, 100% 0, 100% 72%, 0 100%);
}

.page-products .pp-hero::after {
  bottom: 0;
  left: 0;
  width: 44%;
  height: 2px;
  background: linear-gradient(90deg, var(--c-gold), rgba(216, 165, 65, 0));
}

.page-products .pp-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 62rem;
}

.page-products .pp-hero__eyebrow {
  color: var(--c-gold);
}

.page-products .pp-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(36px, 6vw, 78px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--c-head);
  max-width: 22ch;
}

.page-products .pp-hero__lede {
  margin: 24px 0 0;
  max-width: 42em;
  font-size: 17px;
  line-height: 1.78;
  color: var(--c-ondark);
}

.page-products .pp-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

/* ---------- 索引区 ---------- */
.page-products .pp-index {
  padding-bottom: var(--pp-pad);
}

.page-products .pp-index__grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 48px);
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
}

.page-products .pp-index__head .section__title {
  margin: 10px 0 0;
}

.page-products .pp-index__note {
  margin: 14px 0 0;
  max-width: 30em;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-products .pp-index__list {
  margin: 0;
  padding: 0;
  list-style: none;
  min-width: 0;
}

.page-products .pp-index__item {
  position: relative;
}

.page-products .pp-index__item + .pp-index__item {
  margin-top: -9px;
}

.page-products .pp-index__item:nth-child(1) { --x: 0px; z-index: 5; }
.page-products .pp-index__item:nth-child(2) { --x: 16px; z-index: 4; }
.page-products .pp-index__item:nth-child(3) { --x: 32px; z-index: 3; }
.page-products .pp-index__item:nth-child(4) { --x: 16px; z-index: 2; }
.page-products .pp-index__item:nth-child(5) { --x: 0px; z-index: 1; }

.page-products .pp-index__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "no name"
    "no desc";
  gap: 2px 16px;
  padding: 14px 20px;
  background: var(--c-night);
  border: 1px solid var(--pp-line);
  text-decoration: none;
  transform: translateX(var(--x, 0));
  transition: transform .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-products .pp-index__link:hover,
.page-products .pp-index__link:focus-visible {
  transform: translateX(var(--x, 0)) translateY(-4px);
  border-color: var(--c-gold);
  background: #223a56;
}

.page-products .pp-index__link:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
}

.page-products .pp-index__no {
  grid-area: no;
  align-self: center;
  font-family: var(--font-data);
  font-size: 20px;
  font-variant-numeric: tabular-nums;
  color: var(--c-gold);
}

.page-products .pp-index__name {
  grid-area: name;
  font-family: var(--font-head);
  font-size: 17px;
  letter-spacing: -.01em;
  color: var(--c-head);
}

.page-products .pp-index__desc {
  grid-area: desc;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-muted);
}

.page-products .pp-index__fig {
  margin: 0;
  order: -1;
}

.page-products .pp-index__fig img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--pp-line);
  object-fit: cover;
}

/* ---------- 通用产品区块 ---------- */
.page-products .pp-sec {
  padding-block: var(--pp-pad);
}

.page-products .pp-sec__head {
  display: grid;
  gap: 10px;
  padding-top: 18px;
  border-top: 1px solid var(--pp-line);
  margin-bottom: clamp(26px, 3.6vw, 48px);
}

.page-products .pp-sec__head .section__title {
  margin: 8px 0 0;
  max-width: 26ch;
}

.page-products .pp-sec__head .section__note {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--c-gold);
}

.page-products .section--paper .pp-sec__head {
  border-top-color: var(--pp-line-ink);
}

.page-products .section--paper .pp-sec__head .section__note {
  color: #A97C18;
}

.page-products .section--paper .pp-sec__head .eyebrow {
  color: #A97C18;
}

.page-products .pp-cols {
  display: grid;
  gap: clamp(26px, 3.6vw, 56px);
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
}

.page-products .pp-block__title {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-size: 14px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: inherit;
  opacity: .72;
}

.page-products .pp-cols__main > * + * {
  margin-top: clamp(22px, 2.6vw, 34px);
}

.page-products .pp-cols__lede {
  font-size: 17px;
  line-height: 1.78;
  max-width: 38em;
}

.page-products .pp-cols__lede p {
  margin: 0;
}

/* 字段清单 */
.page-products .pp-fields {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 14px;
}

.page-products .pp-field {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-data);
  font-size: 13px;
  line-height: 1.5;
}

.page-products .pp-field::before {
  content: "";
  flex: 0 0 auto;
  width: 4px;
  height: 15px;
  background: var(--c-gold);
}

.page-products .pp-field--coral::before { background: var(--c-coral); }
.page-products .pp-field--cyan::before { background: var(--c-cyan); }
.page-products .pp-field--gold::before { background: var(--c-gold); }

/* 参数表 */
.page-products .pp-ledger {
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid var(--pp-line);
}

.page-products .section--paper .pp-ledger {
  border-top-color: var(--pp-line-ink);
}

.page-products .pp-ledger__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px solid var(--pp-line);
}

.page-products .section--paper .pp-ledger__row {
  border-bottom-color: var(--pp-line-ink);
}

.page-products .pp-ledger__row dt {
  font-size: 13px;
  letter-spacing: .02em;
  opacity: .74;
}

.page-products .pp-ledger__row dd {
  margin: 0;
  font-family: var(--font-data);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

/* 四组对照 */
.page-products .pp-groups {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-products .pp-group {
  display: grid;
  gap: 4px;
  padding-left: 14px;
  border-left: 3px solid var(--c-gold);
}

.page-products .pp-group--coral { border-left-color: var(--c-coral); }
.page-products .pp-group--cyan { border-left-color: var(--c-cyan); }
.page-products .pp-group--night { border-left-color: var(--c-blue); }

.page-products .pp-group__name {
  font-family: var(--font-head);
  font-size: 15px;
  letter-spacing: -.01em;
}

.page-products .pp-group__desc {
  font-size: 13px;
  line-height: 1.6;
  opacity: .74;
}

/* 区间切换示意 */
.page-products .pp-switch {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.page-products .pp-switch__label {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .06em;
  opacity: .7;
  margin-right: 4px;
}

.page-products .pp-switch__chip {
  padding: 5px 12px;
  font-family: var(--font-data);
  font-size: 12px;
  border: 1px solid var(--pp-line);
  color: var(--c-muted);
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-products .pp-switch__chip.is-on {
  border-color: var(--c-cyan);
  color: var(--c-cyan);
}

.page-products .section--paper .pp-switch__chip {
  border-color: var(--pp-line-ink);
  color: var(--c-graphite);
}

.page-products .section--paper .pp-switch__chip.is-on {
  border-color: #0E8F89;
  color: #0E8F89;
}

/* 筛选项 */
.page-products .pp-filters {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--pp-line-ink);
}

.page-products .pp-filter {
  display: grid;
  gap: 4px;
  padding: 13px 0;
  border-bottom: 1px solid var(--pp-line-ink);
}

.page-products .pp-filter__key {
  font-family: var(--font-head);
  font-size: 14px;
  letter-spacing: -.01em;
  color: var(--c-black);
}

.page-products .pp-filter__val {
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-graphite);
}

.page-products .pp-aside__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-graphite);
}

/* 要点列表 */
.page-products .pp-bullets {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .pp-bullets li {
  position: relative;
  padding: 12px 0 12px 22px;
  border-bottom: 1px solid var(--pp-line);
  font-size: 14px;
  line-height: 1.7;
}

.page-products .pp-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 9px;
  height: 2px;
  background: var(--c-gold);
}

/* 步骤 */
.page-products .pp-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
  display: grid;
  gap: 2px;
}

.page-products .pp-step {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 16px;
  padding: 14px 12px 14px 0;
  border-bottom: 1px solid var(--pp-line);
  transition: background .18s var(--ease), padding-left .18s var(--ease);
}

.page-products .section--paper .pp-step {
  border-bottom-color: var(--pp-line-ink);
}

.page-products .pp-step:hover {
  background: rgba(216, 165, 65, .07);
  padding-left: 12px;
}

.page-products .pp-step__no {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid var(--c-gold);
  font-family: var(--font-data);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--c-gold);
}

.page-products .section--paper .pp-step__no {
  border-color: #A97C18;
  color: #A97C18;
}

.page-products .pp-step__body {
  min-width: 0;
}

.page-products .pp-step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
}

.page-products .pp-step__out {
  margin: 6px 0 0;
  font-family: var(--font-data);
  font-size: 12px;
  line-height: 1.5;
  color: var(--c-gold);
}

.page-products .section--paper .pp-step__out {
  color: #A97C18;
}

/* 图 */
.page-products .pp-fig {
  margin: 0;
}

.page-products .pp-fig img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--pp-line);
  object-fit: cover;
}

.page-products .section--paper .pp-fig img {
  border-color: var(--pp-line-ink);
}

.page-products .pp-fig--wide img { aspect-ratio: 3 / 2; }
.page-products .pp-fig--square img { aspect-ratio: 1 / 1; max-width: 520px; }
.page-products .pp-fig--band img { aspect-ratio: 7 / 3; }

.page-products .pp-fig figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-muted);
}

.page-products .section--paper .pp-fig figcaption {
  color: var(--c-graphite);
}

.page-products .pp-inline-cta {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-graphite);
}

.page-products .pp-inline-cta a {
  color: #0E8F89;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

/* ---------- 版本记录 ---------- */
.page-products .pp-ver {
  padding-block: var(--pp-pad);
}

.page-products .pp-ver__list {
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-products .pp-ver__item {
  position: relative;
  flex: 0 0 auto;
  width: min(190px, 62vw);
  padding: 34px 22px 0 0;
  scroll-snap-align: start;
}

.page-products .pp-ver__item::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--pp-line);
}

.page-products .pp-ver__item:first-child::before {
  background: linear-gradient(90deg, var(--c-gold), var(--pp-line));
}

.page-products .pp-ver__dot {
  position: absolute;
  top: 7px;
  left: 0;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--c-ink);
  border: 2px solid var(--c-gold);
}

.page-products .pp-ver__item:last-child .pp-ver__dot {
  background: var(--c-coral);
  border-color: var(--c-coral);
}

.page-products .pp-ver__year {
  display: block;
  font-family: var(--font-data);
  font-size: 20px;
  font-variant-numeric: tabular-nums;
  color: var(--c-gold);
}

.page-products .pp-ver__name {
  display: block;
  margin-top: 8px;
  font-family: var(--font-head);
  font-size: 15px;
  letter-spacing: -.01em;
  color: var(--c-head);
}

.page-products .pp-ver__desc {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-muted);
  padding-right: 8px;
}

.page-products .pp-ver__foot {
  margin: 28px 0 0;
  max-width: 46em;
  font-size: 14px;
  line-height: 1.78;
  color: var(--c-ondark);
}

.page-products .pp-ver__foot a {
  color: var(--c-gold);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-products .pp-fig--band {
  margin-top: clamp(26px, 3.6vw, 44px);
}

/* ---------- 从哪里开始 ---------- */
.page-products .pp-start__grid {
  display: grid;
  gap: clamp(16px, 2.2vw, 26px);
  grid-template-columns: minmax(0, 1fr);
}

.page-products .pp-start__card {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: 24px 22px 26px;
  background: rgba(243, 237, 225, .6);
  border: 1px solid var(--pp-line-ink);
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.page-products .pp-start__card:hover {
  border-color: #A97C18;
  transform: translateY(-3px);
}

.page-products .pp-start__card .tag {
  justify-self: start;
}

.page-products .pp-start__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 19px;
  line-height: 1.28;
  letter-spacing: -.015em;
  color: var(--c-black);
}

.page-products .pp-start__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--c-graphite);
}

.page-products .pp-start__combo {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--pp-line-ink);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .03em;
  color: #A97C18;
}

.page-products .pp-start__cta {
  margin-top: clamp(30px, 4vw, 52px);
  padding: 26px 24px;
  display: grid;
  gap: 18px;
  border: 1px solid var(--pp-line-ink);
  border-left: 4px solid var(--c-gold);
  background: rgba(255, 255, 255, .38);
}

.page-products .pp-start__cta-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-black);
}

.page-products .pp-start__cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-products .pp-sec__head {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }

  .page-products .pp-sec__head .section__note {
    text-align: right;
    padding-bottom: 6px;
  }

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

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

@media (min-width: 900px) {
  .page-products .pp-index__grid {
    grid-template-columns: minmax(0, 21rem) minmax(0, 1fr);
    grid-template-areas:
      "head list"
      "fig  list";
  }

  .page-products .pp-index__head { grid-area: head; }
  .page-products .pp-index__list { grid-area: list; }
  .page-products .pp-index__fig { grid-area: fig; order: 0; margin-top: 8px; }

  .page-products .pp-cols {
    grid-template-columns: minmax(0, 20rem) minmax(0, 1fr);
  }

  .page-products .pp-cols--reverse {
    grid-template-columns: minmax(0, 1fr) minmax(0, 20rem);
  }

  .page-products .pp-cols--reverse .pp-cols__aside {
    order: 2;
  }

  .page-products .pp-cols--reverse .pp-cols__main {
    order: 1;
  }

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

  .page-products .pp-ver__list {
    overflow-x: visible;
  }

  .page-products .pp-ver__item {
    width: auto;
    flex: 1 1 0;
  }
}

@media (min-width: 1200px) {
  .page-products .pp-hero__inner {
    padding-left: 3rem;
  }

  .page-products .pp-hero__title {
    max-width: 20ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-index__link,
  .page-products .pp-step,
  .page-products .pp-start__card {
    transition: none;
  }

  .page-products .pp-index__link:hover,
  .page-products .pp-index__link:focus-visible,
  .page-products .pp-start__card:hover {
    transform: translateX(var(--x, 0));
  }
}