.page-products {
  --prod-rule: rgba(42, 28, 19, 0.14);
  --prod-rule-light: rgba(247, 240, 225, 0.16);
  background: var(--cream);
  color: var(--brown);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  position: relative;
  overflow: hidden;
  padding: 38px 0 62px;
  background: var(--ink);
  color: var(--cream);
}

.page-products .prod-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -28%;
  width: 66%;
  height: 178%;
  background: linear-gradient(155deg, rgba(201, 162, 39, 0.32), rgba(200, 16, 46, 0.24) 54%, rgba(47, 143, 131, 0) 100%);
  transform: rotate(-14deg);
  pointer-events: none;
}

.page-products .prod-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, var(--red), var(--gold) 46%, var(--jade));
  pointer-events: none;
}

.page-products .prod-hero__grid {
  position: relative;
  display: grid;
  gap: 30px;
  align-items: start;
}

.page-products .prod-hero__main .breadcrumbs {
  margin-bottom: 20px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: rgba(247, 240, 225, 0.62);
}

.page-products .prod-hero__main .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .prod-hero__main .breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(201, 162, 39, 0.7);
}

.page-products .prod-hero__main .breadcrumbs a {
  color: rgba(247, 240, 225, 0.82);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 162, 39, 0.4);
}

.page-products .prod-hero__main .breadcrumbs a:hover {
  color: var(--cream-hi);
  border-bottom-color: var(--orange);
}

.page-products .prod-hero .eyebrow {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--gold);
  margin: 0 0 14px;
}

.page-products .prod-hero h1 {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(1.9rem, 5.4vw, 3.4rem);
  line-height: 1.2;
  letter-spacing: 0.01em;
  margin: 0 0 18px;
  color: var(--cream-hi);
  max-width: 17em;
}

.page-products .prod-hero__intro {
  font-family: var(--sans);
  font-size: clamp(0.95rem, 2.1vw, 1.06rem);
  line-height: 1.85;
  color: rgba(247, 240, 225, 0.84);
  max-width: 34em;
  margin: 0 0 26px;
}

.page-products .prod-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .prod-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  list-style: none;
  margin: 28px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--prod-rule-light);
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
}

.page-products .prod-jump a {
  color: rgba(247, 240, 225, 0.74);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 162, 39, 0.42);
  padding-bottom: 3px;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-products .prod-jump a:hover {
  color: var(--cream-hi);
  border-bottom-color: var(--orange);
}

.page-products .prod-stamp {
  position: relative;
  background: var(--cream-hi);
  color: var(--brown);
  border-radius: var(--r-organic);
  border: 1px solid var(--rule-gold);
  border-left: 6px solid var(--red);
  padding: 22px 20px;
  box-shadow: var(--shadow-2);
  transform: rotate(-2deg);
  max-width: 320px;
}

.page-products .prod-stamp__label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--red);
  margin: 0 0 14px;
}

.page-products .prod-stamp__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 10px;
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(42, 28, 19, 0.18);
}

.page-products .prod-stamp__key {
  font-family: var(--sans);
  font-size: 0.84rem;
  color: rgba(42, 28, 19, 0.72);
}

.page-products .prod-stamp__val {
  font-family: var(--mono);
  font-size: 1.32rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.page-products .prod-stamp__note {
  font-family: var(--sans);
  font-size: 0.82rem;
  line-height: 1.7;
  color: rgba(42, 28, 19, 0.7);
  margin: 14px 0 0;
}

/* ---------- 筛选条 ---------- */
.page-products .prod-board__bar {
  padding-top: 30px;
  padding-bottom: 6px;
}

.page-products .prod-board__bar .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-products .prod-board__bar .filter-btn {
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
}

.page-products .prod-board__bar .empty-state {
  margin: 18px 0 0;
  font-family: var(--sans);
  font-size: 0.9rem;
  color: rgba(42, 28, 19, 0.68);
}

/* ---------- 研究板通用 ---------- */
.page-products .board {
  padding: clamp(42px, 7vw, 78px) 0;
}

.page-products .board--light {
  background: var(--cream-hi);
  color: var(--brown);
}

.page-products .board--cream {
  background: var(--cream);
  color: var(--brown);
}

.page-products .board--ink {
  background: var(--ink);
  color: var(--cream);
}

.page-products .board--ink-soft {
  background: var(--ink-soft);
  color: var(--cream);
}

.page-products .board__grid {
  display: grid;
  gap: clamp(24px, 4vw, 42px);
  align-items: start;
}

.page-products .board .chapter-num {
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.2em;
  color: var(--red);
  margin: 0 0 10px;
}

.page-products .board--ink .chapter-num,
.page-products .board--ink-soft .chapter-num {
  color: var(--gold);
}

.page-products .board__title {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(1.4rem, 3.4vw, 2.05rem);
  line-height: 1.32;
  margin: 0 0 16px;
  color: var(--brown);
}

.page-products .board--ink .board__title,
.page-products .board--ink-soft .board__title {
  color: var(--cream-hi);
}

.page-products .board__lede {
  font-family: var(--sans);
  font-size: 0.97rem;
  line-height: 1.85;
  color: rgba(42, 28, 19, 0.78);
  max-width: 34em;
  margin: 0 0 22px;
}

.page-products .board--ink .board__lede,
.page-products .board--ink-soft .board__lede {
  color: rgba(247, 240, 225, 0.82);
}

.page-products .board__terms {
  margin: 0 0 22px;
  padding: 0;
}

.page-products .board__term {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-top: 1px solid var(--prod-rule);
}

.page-products .board--ink .board__term,
.page-products .board--ink-soft .board__term {
  border-top-color: var(--prod-rule-light);
}

.page-products .board__term dt {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--red);
}

.page-products .board--ink .board__term dt,
.page-products .board--ink-soft .board__term dt {
  color: var(--gold);
}

.page-products .board__term dd {
  margin: 0;
  font-family: var(--sans);
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(42, 28, 19, 0.8);
}

.page-products .board--ink .board__term dd,
.page-products .board--ink-soft .board__term dd {
  color: rgba(247, 240, 225, 0.82);
}

.page-products .board__bullets {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .board__bullets li {
  position: relative;
  padding-left: 20px;
  font-family: var(--sans);
  font-size: 0.92rem;
  line-height: 1.72;
  color: rgba(247, 240, 225, 0.84);
}

.page-products .board__bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 9px;
  height: 2px;
  background: var(--gold);
}

.page-products .board .link-arrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  color: var(--red);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 16, 46, 0.42);
  padding-bottom: 3px;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-products .board--ink .link-arrow,
.page-products .board--ink-soft .link-arrow {
  color: var(--gold);
  border-bottom-color: rgba(201, 162, 39, 0.5);
}

.page-products .board .link-arrow:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-products .board__media {
  margin: 0;
}

.page-products .board__media-block {
  margin-top: clamp(24px, 4vw, 38px);
}

.page-products .board .media-frame {
  background: linear-gradient(135deg, rgba(200, 16, 46, 0.1), rgba(201, 162, 39, 0.16) 52%, rgba(47, 143, 131, 0.12));
  border-radius: var(--r-organic);
  border: 1px solid var(--rule-gold);
  overflow: hidden;
}

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

.page-products .board .media-frame__cap {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  line-height: 1.6;
  padding: 10px 14px;
  color: rgba(42, 28, 19, 0.68);
  background: rgba(255, 251, 242, 0.86);
}

.page-products .board--ink .media-frame__cap,
.page-products .board--ink-soft .media-frame__cap {
  color: rgba(42, 28, 19, 0.7);
}

.page-products .board__footnote {
  font-family: var(--sans);
  font-size: 0.84rem;
  line-height: 1.72;
  color: rgba(42, 28, 19, 0.62);
  margin: 16px 0 0;
}

.page-products .board--ink .board__footnote,
.page-products .board--ink-soft .board__footnote {
  color: rgba(247, 240, 225, 0.62);
}

/* ---------- 年份色带 ---------- */
.page-products .board__strip-wrap {
  margin-top: clamp(24px, 4vw, 38px);
}

.page-products .year-strip {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-products .year-strip__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 12px 12px;
  border-top: 3px solid var(--gold);
  border-radius: 0 0 var(--r-soft) var(--r-soft);
  background: rgba(247, 240, 225, 0.07);
}

.page-products .year-strip__item:nth-child(3n + 2) {
  border-top-color: var(--red);
}

.page-products .year-strip__item:nth-child(3n + 3) {
  border-top-color: var(--jade);
}

.page-products .year-strip__idx {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  color: rgba(247, 240, 225, 0.5);
}

.page-products .year-strip__year {
  font-family: var(--mono);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--cream-hi);
}

/* ---------- 标签云 ---------- */
.page-products .tag-groups {
  display: grid;
  gap: 16px;
  margin-top: 6px;
}

.page-products .tag-group {
  --tg: var(--red);
  background: var(--cream-hi);
  border: 1px solid var(--prod-rule);
  border-left: 5px solid var(--tg);
  border-radius: var(--r-soft);
  padding: 16px 16px 18px;
}

.page-products .tag-group--a { --tg: var(--red); }
.page-products .tag-group--b { --tg: var(--gold); }
.page-products .tag-group--c { --tg: var(--ink-soft); }
.page-products .tag-group--d { --tg: var(--jade); }
.page-products .tag-group--e { --tg: var(--orange); }
.page-products .tag-group--f { --tg: var(--brown); }

.page-products .tag-group__title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--brown);
  margin: 0;
}

.page-products .tag-group__count {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: rgba(42, 28, 19, 0.45);
}

.page-products .tag-group__list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
}

/* ---------- 企业快查面板 ---------- */
.page-products .quick-panel {
  background: var(--cream-hi);
  color: var(--brown);
  border-radius: var(--r-organic);
  border: 1px solid var(--rule-gold);
  padding: 22px 20px;
  box-shadow: var(--shadow-1);
}

.page-products .quick-panel__title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.06rem;
  margin: 0 0 14px;
  color: var(--brown);
}

.page-products .quick-steps {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .quick-steps li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 8px;
  align-items: start;
  font-family: var(--sans);
  font-size: 0.88rem;
  line-height: 1.66;
  color: rgba(42, 28, 19, 0.82);
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(42, 28, 19, 0.16);
}

.page-products .quick-steps li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-products .quick-steps__num {
  font-family: var(--mono);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--red);
  padding-top: 2px;
}

.page-products .quick-fields {
  border-top: 1px solid var(--prod-rule);
  padding-top: 14px;
}

.page-products .quick-fields summary {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--jade);
  cursor: pointer;
  list-style: none;
}

.page-products .quick-fields summary::-webkit-details-marker {
  display: none;
}

.page-products .quick-fields summary::before {
  content: "+ ";
  color: var(--red);
}

.page-products .quick-fields[open] summary::before {
  content: "− ";
}

.page-products .quick-fields__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 14px;
}

.page-products .quick-fields__list li {
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.9;
  color: rgba(42, 28, 19, 0.76);
  border-bottom: 1px dotted rgba(42, 28, 19, 0.14);
}

.page-products .quick-panel__note {
  font-family: var(--sans);
  font-size: 0.82rem;
  line-height: 1.7;
  color: rgba(42, 28, 19, 0.66);
  margin: 16px 0 0;
}

/* ---------- 版本对照 ---------- */
.page-products .version-pair {
  display: grid;
  gap: 12px;
  margin: 0 0 18px;
}

.page-products .version-pair__card {
  background: var(--cream-hi);
  border: 1px solid var(--prod-rule);
  border-top: 4px solid var(--red);
  border-radius: var(--r-soft);
  padding: 16px 16px 18px;
}

.page-products .version-pair__card--alt {
  border-top-color: var(--jade);
}

.page-products .version-pair__name {
  font-family: var(--sans);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: rgba(42, 28, 19, 0.6);
  margin: 0 0 6px;
}

.page-products .version-pair__code {
  font-family: var(--mono);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--ink);
  margin: 0 0 8px;
}

.page-products .version-pair__desc {
  font-family: var(--sans);
  font-size: 0.86rem;
  line-height: 1.7;
  color: rgba(42, 28, 19, 0.76);
  margin: 0;
}

/* ---------- 版本演进 ---------- */
.page-products .version-line {
  list-style: none;
  margin: 0 0 30px;
  padding: 0;
}

.page-products .version-line__item {
  position: relative;
  padding: 0 0 22px 26px;
  border-left: 2px solid var(--rule-gold);
}

.page-products .version-line__item--last {
  border-left-color: transparent;
}

.page-products .version-line__item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(201, 162, 39, 0.16);
}

.page-products .version-line__year {
  font-family: var(--mono);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--gold);
  margin: 0 0 4px;
}

.page-products .version-line__name {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1rem;
  color: var(--cream-hi);
  margin: 0 0 5px;
}

.page-products .version-line__text {
  font-family: var(--sans);
  font-size: 0.87rem;
  line-height: 1.72;
  color: rgba(247, 240, 225, 0.76);
  margin: 0;
}

.page-products .metrics {
  display: grid;
  gap: 12px;
  border-top: 1px solid var(--prod-rule-light);
  padding-top: 22px;
}

.page-products .metric {
  border-left: 3px solid var(--red);
  padding-left: 14px;
}

.page-products .metric__num {
  font-family: var(--mono);
  font-size: clamp(1.6rem, 4.4vw, 2.3rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.1;
  color: var(--gold);
  margin: 0 0 6px;
}

.page-products .metric__label {
  font-family: var(--sans);
  font-size: 0.84rem;
  line-height: 1.6;
  color: rgba(247, 240, 225, 0.72);
  margin: 0;
}

/* ---------- 延伸入口 ---------- */
.page-products .prod-next {
  background: var(--cream-hi);
  padding: clamp(40px, 6vw, 68px) 0 clamp(48px, 7vw, 76px);
  border-top: 1px solid var(--prod-rule);
}

.page-products .prod-next__title {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(1.24rem, 3vw, 1.7rem);
  color: var(--brown);
  margin: 0 0 22px;
}

.page-products .prod-next__grid {
  display: grid;
  gap: 12px;
}

.page-products .prod-next__door {
  display: grid;
  gap: 6px;
  padding: 18px;
  background: var(--cream);
  border: 1px solid var(--prod-rule);
  border-radius: var(--r-soft);
  text-decoration: none;
  color: var(--brown);
  transition: transform 200ms var(--ease), box-shadow 200ms var(--ease), border-color 200ms var(--ease);
}

.page-products .prod-next__door:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-1);
  border-color: rgba(200, 16, 46, 0.4);
}

.page-products .prod-next__door-num {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--red);
}

.page-products .prod-next__door-name {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--brown);
}

.page-products .prod-next__door-desc {
  font-family: var(--sans);
  font-size: 0.85rem;
  line-height: 1.7;
  color: rgba(42, 28, 19, 0.7);
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-products .year-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

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

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

@media (min-width: 860px) {
  .page-products .prod-hero {
    padding: 52px 0 84px;
  }

  .page-products .prod-hero__grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 0.78fr);
    gap: 52px;
    align-items: end;
  }

  .page-products .prod-stamp {
    margin-left: auto;
    margin-bottom: 8px;
  }

  .page-products .board__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(30px, 4vw, 52px);
  }

  .page-products .board__grid--flip .board__text {
    order: 2;
  }

  .page-products .board__grid--flip .board__media {
    order: 1;
  }

  .page-products .board__text {
    padding-top: 4px;
  }

  .page-products .year-strip {
    grid-template-columns: repeat(7, minmax(0, 1fr));
  }

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

  .page-products .prod-next__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-products .version-line {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-products .version-line__item {
    padding: 22px 18px 0 0;
    border-left: 0;
    border-top: 2px solid var(--rule-gold);
  }

  .page-products .version-line__item--last {
    border-top-color: var(--rule-gold);
  }

  .page-products .version-line__item::before {
    left: 0;
    top: -7px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .prod-stamp {
    transform: none;
  }

  .page-products .prod-next__door:hover {
    transform: none;
  }
}
<<<END>>>