.page-products {
  --p-gap: clamp(40px, 7vw, 96px);
  --p-soft: clamp(20px, 3vw, 36px);
  color: var(--ink);
  font-family: var(--font-sans);
  padding-bottom: clamp(60px, 9vw, 120px);
}

/* ---------- 面包屑 ---------- */
.page-products .breadcrumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  margin: 0;
  padding: 18px 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--graphite);
}

.page-products .breadcrumbs li {
  display: inline-flex;
  align-items: center;
}

.page-products .breadcrumbs li + li::before {
  content: "/";
  margin-right: 10px;
  color: var(--line);
}

.page-products .breadcrumbs a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 1px;
}

.page-products .breadcrumbs a:hover {
  border-bottom-color: var(--gold);
}

/* ---------- 首屏 ---------- */
.page-products__hero {
  padding-top: clamp(14px, 3vw, 28px);
  padding-bottom: var(--p-gap);
}

.page-products__hero .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--brick);
  margin: 0 0 18px;
}

.page-products__hero h1 {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(32px, 7vw, 64px);
  line-height: 1.08;
  letter-spacing: -.012em;
  margin: 0 0 22px;
  max-width: 15ch;
}

.page-products__lede {
  font-size: clamp(16px, 1.45vw, 18px);
  line-height: 1.8;
  color: var(--graphite);
  max-width: 66ch;
  margin: 0 0 36px;
}

.page-products__figures {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products__figures li {
  background: var(--paper);
  padding: 22px 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-products__fig-num {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(26px, 4.4vw, 40px);
  line-height: 1;
  color: var(--gold-deep);
}

.page-products__fig-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--graphite);
  line-height: 1.5;
}

/* ---------- 区块通用 ---------- */
.page-products .products-block {
  padding-top: var(--p-gap);
  padding-bottom: var(--p-gap);
  border-top: var(--hair);
}

.page-products .section-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px 22px;
  align-items: start;
  margin-bottom: var(--p-soft);
}

.page-products .section-head .num-block {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  padding: 12px 14px;
  background: var(--paper);
  border: 1px solid var(--line);
  color: var(--ink);
  transition: background-color .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease);
}

.page-products .section-head.is-visible .num-block {
  background: var(--gold);
  border-color: var(--gold-deep);
  color: var(--ink);
}

.page-products .section-head .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--brick);
  margin: 4px 0 10px;
}

.page-products .section-head h2 {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.18;
  letter-spacing: -.01em;
  margin: 0;
  max-width: 24ch;
}

.products-block__hero {
  margin: 0 0 var(--p-soft);
}

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

/* ---------- 案例区 ---------- */
.case-finding {
  display: grid;
  gap: var(--p-soft);
  margin-bottom: var(--p-soft);
}

.case-finding__text {
  padding: clamp(24px, 3.4vw, 40px);
  border-top: 1px solid var(--gold);
}

.case-finding__text h3 {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(20px, 2.4vw, 26px);
  margin: 0 0 14px;
}

.case-finding__text p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--graphite);
  max-width: 56ch;
}

.case-finding__media {
  margin: 0;
}

.case-finding__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.case-mosaic {
  display: grid;
  gap: 0;
  border: 1px solid var(--line);
  background: var(--line);
}

.case-cell {
  background: var(--paper);
  padding: clamp(24px, 3.6vw, 42px);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.case-cell + .case-cell {
  border-top: 1px solid var(--line);
}

.case-cell .tag {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  padding: 4px 9px;
  background: var(--sand);
  color: var(--ink);
  border: 1px solid var(--line);
}

.case-cell__title {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(19px, 2.3vw, 24px);
  line-height: 1.3;
  margin: 0;
}

.case-cell__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: var(--hair);
}

.case-cell__list li {
  display: grid;
  grid-template-columns: 44px 1fr;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: var(--hair);
  font-size: 15px;
  color: var(--ink);
}

.case-cell__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold-deep);
  letter-spacing: .06em;
}

.case-cell__note,
.case-cell__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--graphite);
}

/* ---------- 下载区 ---------- */
.download-groups {
  display: grid;
  gap: 0;
  border: 1px solid var(--line);
  margin-bottom: var(--p-soft);
}

.download-group {
  padding: clamp(22px, 3vw, 34px);
  background: var(--paper);
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num title"
    "num body"
    "num meta";
  gap: 10px 20px;
  align-items: start;
}

.download-group + .download-group {
  border-top: var(--hair);
}

.download-group:nth-child(even) {
  background: var(--zebra);
}

.download-group__num {
  grid-area: num;
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 30px;
  line-height: 1;
  color: var(--gold-deep);
}

.download-group__title {
  grid-area: title;
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(18px, 2.2vw, 22px);
}

.download-group__body {
  grid-area: body;
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: var(--graphite);
}

.download-group__meta {
  grid-area: meta;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--brick);
}

.download-list-title {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(18px, 2.3vw, 24px);
  margin: 0 0 18px;
}

.download-ledger {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  border: 1px solid var(--line);
}

.page-products .download-ledger .ledger-row {
  display: grid;
  grid-template-columns: 108px 1fr auto;
  grid-template-areas:
    "num name meta"
    "num note meta";
  gap: 4px 16px;
  align-items: center;
  padding: 14px 18px;
  background: var(--paper);
  border-bottom: var(--hair);
  transition: background-color .25s var(--ease);
}

.page-products .download-ledger .ledger-row:last-child {
  border-bottom: 0;
}

.page-products .download-ledger .ledger-row:nth-child(even) {
  background: var(--zebra);
}

.page-products .download-ledger .ledger-row:hover {
  background: var(--sand);
}

.page-products .download-ledger .ledger-num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--gold-deep);
}

.page-products .download-ledger .ledger-name {
  grid-area: name;
  font-weight: 600;
  font-size: 15px;
  color: var(--ink);
}

.page-products .download-ledger .ledger-note {
  grid-area: note;
  font-size: 13px;
  line-height: 1.6;
  color: var(--graphite);
}

.page-products .download-ledger .ledger-meta {
  grid-area: meta;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--brick);
  letter-spacing: .04em;
}

.page-products .download-ledger .copy-btn {
  grid-column: 3;
  grid-row: 3;
  justify-self: end;
}

.download-pace {
  margin: 0;
  padding: 16px 18px;
  border-left: 3px solid var(--gold);
  background: var(--sand);
  font-size: 15px;
  line-height: 1.76;
  color: var(--ink);
}

/* ---------- 权益区 ---------- */
.benefit-wrap {
  display: grid;
  gap: var(--p-soft);
}

.benefit-grid {
  display: grid;
  gap: 0;
  border: 1px solid var(--line);
  background: var(--line);
}

.benefit {
  background: var(--paper);
  padding: clamp(24px, 3.2vw, 36px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  transition: background-color .28s var(--ease);
}

.benefit + .benefit {
  border-top: 1px solid var(--line);
}

.benefit:hover {
  background: var(--sand);
}

.benefit__mark {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold-deep);
}

.benefit__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(18px, 2.1vw, 22px);
  line-height: 1.32;
}

.benefit__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--graphite);
}

.benefit__for {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: var(--hair);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--brick);
}

.benefit-media {
  margin: 0;
}

.benefit-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.benefit-foot {
  margin: var(--p-soft) 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--graphite);
  max-width: 72ch;
  padding-left: 16px;
  border-left: 1px solid var(--line);
}

/* ---------- 流程区 ---------- */
.flow-wrap {
  display: grid;
  gap: var(--p-soft);
}

.flow-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--hair);
}

.flow-step {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num title"
    "num body";
  gap: 8px 20px;
  padding: 22px 0;
  border-bottom: var(--hair);
  align-items: start;
}

.flow-step__num {
  grid-area: num;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--ink);
  color: var(--gold);
}

.flow-step__title {
  grid-area: title;
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(18px, 2.1vw, 22px);
}

.flow-step__body {
  grid-area: body;
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--graphite);
}

.flow-media {
  margin: 0;
}

.flow-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 版本区 ---------- */
.version-panel {
  display: grid;
  gap: var(--p-soft);
  padding: clamp(26px, 3.6vw, 46px);
  border-top: 1px solid var(--gold);
}

.version-seal {
  color: var(--gold-deep);
  width: clamp(84px, 14vw, 116px);
}

.version-seal svg {
  display: block;
  width: 100%;
  height: auto;
}

.version-panel__text h3 {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(17px, 2vw, 21px);
  margin: 0 0 10px;
}

.version-panel__text h3 + p {
  margin-top: 0;
}

.version-panel__text h3:not(:first-child) {
  margin-top: 28px;
}

.version-panel__text p {
  margin: 0 0 6px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--graphite);
  max-width: 62ch;
}

/* ---------- 建议区 ---------- */
.advice-list {
  display: grid;
  gap: 0;
  border-top: var(--hair);
}

.advice {
  padding: 26px 0;
  border-bottom: var(--hair);
  display: grid;
  gap: 10px;
}

.advice__q {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(19px, 2.4vw, 25px);
  line-height: 1.32;
  color: var(--ink);
}

.advice__a {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--graphite);
  max-width: 70ch;
}

/* ---------- 快速问答 ---------- */
.faq-list {
  border-top: var(--hair);
}

.faq-item {
  border-bottom: var(--hair);
  padding: 6px 0;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 0;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(16px, 1.9vw, 19px);
  color: var(--ink);
  position: relative;
  padding-right: 34px;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--gold-deep);
  transition: transform .25s var(--ease);
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.faq-item p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--graphite);
  max-width: 68ch;
}

.products-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: var(--p-soft);
}

/* ---------- 焦点可见 ---------- */
.page-products a:focus-visible,
.page-products button:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-products__figures {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-products__figures li {
    padding: 26px 22px 24px;
  }

  .download-groups {
    grid-template-columns: repeat(2, 1fr);
  }

  .download-group:nth-child(2n) {
    border-left: var(--hair);
  }

  .download-group:nth-child(n + 3) {
    border-top: var(--hair);
  }

  .case-cell + .case-cell {
    border-top: 0;
    border-left: var(--hair);
  }

  .benefit-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .benefit:nth-child(2n) {
    border-left: var(--hair);
  }

  .benefit:nth-child(n + 3) {
    border-top: var(--hair);
  }

  .case-finding {
    grid-template-columns: 1.5fr 1fr;
    align-items: stretch;
  }
}

@media (min-width: 960px) {
  .page-products .products-block {
    padding-left: var(--gut);
    padding-right: var(--gut);
  }

  .case-mosaic {
    grid-template-columns: 1.6fr 1fr;
    grid-template-rows: auto auto;
    align-items: stretch;
  }

  .case-cell--wide {
    grid-row: 1 / span 2;
  }

  .case-cell--narrow {
    border-left: var(--hair);
  }

  .case-cell--narrow + .case-cell--narrow {
    border-top: var(--hair);
  }

  .benefit-wrap {
    grid-template-columns: 1.6fr 1fr;
    align-items: start;
  }

  .benefit-media {
    position: sticky;
    top: 24px;
  }

  .flow-wrap {
    grid-template-columns: 1.7fr 1fr;
    align-items: start;
  }

  .flow-media {
    position: sticky;
    top: 24px;
  }

  .flow-step {
    grid-template-columns: 56px 200px 1fr;
    grid-template-areas: "num title body";
    align-items: center;
    gap: 12px 26px;
    padding: 26px 0;
  }

  .flow-step__num {
    width: 46px;
    height: 46px;
  }

  .advice {
    grid-template-columns: minmax(220px, 0.8fr) 1.6fr;
    gap: 12px 44px;
    align-items: baseline;
    padding: 32px 0;
  }

  .advice__q {
    padding-left: 18px;
    border-left: 3px solid var(--gold);
  }

  .version-panel {
    grid-template-columns: 160px 1fr;
    gap: 44px;
    align-items: start;
  }

  .page-products .download-ledger .ledger-row {
    grid-template-columns: 120px 240px 1fr 68px 92px;
    grid-template-areas: "num name note meta copy";
    padding: 16px 22px;
  }

  .page-products .download-ledger .ledger-row:hover .ledger-note {
    color: var(--ink);
  }

  .page-products .download-ledger .copy-btn {
    grid-area: copy;
    grid-column: auto;
    grid-row: auto;
    justify-self: stretch;
  }
}

@media (min-width: 1200px) {
  .case-cell--wide {
    padding: clamp(34px, 4vw, 56px);
  }

  .case-cell--narrow {
    padding: clamp(28px, 3vw, 40px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products * {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}

.page-products .copy-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  padding: 5px 10px;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 2px;
  cursor: pointer;
  transition: background-color .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.page-products .copy-btn:hover {
  border-color: var(--gold-deep);
  background: var(--gold);
}

.page-products .copy-btn.is-done {
  background: var(--ink);
  color: var(--gold);
  border-color: var(--ink);
}