.page-products {
  --pd-max: 1240px;
  --pd-tight: clamp(16px, 3vw, 30px);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
}

.page-products .pd-wrap {
  width: 100%;
  max-width: var(--pd-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-products .mono {
  font-family: var(--font-mono);
}

/* 顶部上下文条 */
.page-products .pd-topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  align-items: center;
  justify-content: space-between;
  padding-block: 14px;
  border-bottom: 1px solid var(--hairline);
}

.page-products .pd-topbar__meta {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--celadon);
}

.page-products .breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-products .breadcrumb a {
  color: var(--celadon);
  text-decoration: none;
}

.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus-visible {
  color: var(--copper);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 首屏 */
.page-products .pd-hero {
  position: relative;
  background: var(--ink-teal);
  color: var(--paper);
  padding-block: clamp(36px, 6vw, 74px) clamp(30px, 4.5vw, 54px);
  border-bottom: 3px solid var(--copper);
  overflow: hidden;
}

.page-products .pd-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.28;
  pointer-events: none;
}

.page-products .pd-hero > .pd-wrap {
  position: relative;
  z-index: 1;
}

.page-products .pd-kicker {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--copper-bright);
}

.page-products .pd-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(28px, 5vw, 54px);
  line-height: 1.24;
  letter-spacing: 0.01em;
  color: var(--white);
  max-width: 20ch;
}

.page-products .pd-hero .lede {
  margin: 0;
  max-width: 40em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: rgba(242, 245, 242, 0.86);
}

.page-products .pd-hero__grid {
  display: grid;
  gap: 28px;
}

.page-products .pd-card {
  border: 1px solid var(--copper);
  background: rgba(7, 27, 30, 0.6);
  padding: 20px 20px 22px;
}

.page-products .pd-card__tag {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--celadon);
}

.page-products .pd-card__ver {
  margin: 6px 0 10px;
  font-family: var(--font-serif);
  font-size: 46px;
  line-height: 1;
  color: var(--amber);
}

.page-products .pd-card__txt {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 245, 242, 0.8);
}

.page-products .pd-card .btn {
  display: inline-block;
  font-size: 13px;
}

/* 首屏快捷索引 */
.page-products .pd-quick {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-products .pd-quick li {
  border-bottom: 1px solid rgba(184, 131, 62, 0.18);
}

.page-products .pd-quick a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 2px;
  color: rgba(242, 245, 242, 0.9);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.page-products .pd-quick a .mono {
  font-size: 11px;
  color: var(--copper-bright);
  letter-spacing: 0.08em;
}

.page-products .pd-quick a:hover,
.page-products .pd-quick a:focus-visible {
  color: var(--amber);
  padding-left: 8px;
}

/* 区块骨架 */
.page-products .pd-section {
  padding-block: clamp(38px, 6vw, 72px);
  border-bottom: 1px solid var(--hairline);
}

.page-products .pd-section--last {
  border-bottom: 0;
}

.page-products .pd-head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(22px, 3vw, 36px);
}

.page-products .pd-head .eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--celadon);
}

.page-products .pd-num {
  color: var(--copper);
  border-right: 1px solid var(--line);
  padding-right: 10px;
}

.page-products .pd-head h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(23px, 3.4vw, 38px);
  line-height: 1.32;
  color: var(--ink-teal);
  max-width: 24ch;
}

.page-products .pd-head p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(17, 24, 23, 0.82);
}

/* 01 入口地图 */
.page-products .pd-map {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--copper);
  border-left: 1px solid var(--hairline);
}

.page-products .pd-map__item {
  border-right: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  background: var(--white);
}

.page-products .pd-map__item a {
  display: block;
  height: 100%;
  padding: 18px 16px 20px;
  text-decoration: none;
  color: inherit;
  border-top: 2px solid transparent;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-products .pd-map__item a:hover,
.page-products .pd-map__item a:focus-visible {
  border-top-color: var(--copper);
  background: #fbfcfa;
}

.page-products .pd-map__no {
  display: block;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--copper);
}

.page-products .pd-map__item h3 {
  margin: 8px 0 8px;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink-teal);
}

.page-products .pd-map__item p {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(17, 24, 23, 0.72);
}

.page-products .pd-map__route {
  display: block;
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--celadon);
  word-break: break-all;
}

.page-products .pd-path {
  margin: 22px 0 0;
  padding: 12px 14px;
  background: var(--slate);
  border-left: 3px solid var(--copper);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--ink-teal);
  letter-spacing: 0.02em;
  word-break: break-all;
}

/* 02 版本对照 */
.page-products .pd-figure {
  margin: 0 0 clamp(22px, 3vw, 34px);
}

.page-products .pd-figure--tight {
  margin-top: 22px;
  margin-bottom: 0;
}

.page-products .figure__media {
  border: 1px solid var(--line);
  background: var(--slate);
  padding: 6px;
}

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

.page-products .figure__caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(17, 24, 23, 0.6);
  letter-spacing: 0.01em;
}

.page-products .pd-verlayout {
  display: grid;
  gap: 26px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-products .pd-rail {
  border-left: 1px solid var(--copper);
  padding-left: 16px;
}

.page-products .pd-rail__cap {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--celadon);
}

.page-products .pd-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .pd-rail__item {
  display: grid;
  gap: 2px;
  font-size: 13.5px;
  line-height: 1.6;
  color: rgba(17, 24, 23, 0.72);
  padding-left: 10px;
  border-left: 2px solid transparent;
}

.page-products .pd-rail__item .mono {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--copper);
}

.page-products .pd-rail__item.is-current {
  border-left-color: var(--amber);
  color: var(--ink-teal);
  font-weight: 600;
}

.page-products .pd-rail__note {
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: rgba(17, 24, 23, 0.6);
}

.page-products .pd-tablewrap {
  border: 1px solid var(--hairline);
  background: var(--white);
  overflow-x: auto;
}

.page-products .pd-table {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.7;
}

.page-products .pd-table__cap {
  caption-side: top;
  text-align: left;
  padding: 12px 14px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--celadon);
  border-bottom: 1px solid var(--hairline-soft);
}

.page-products .pd-table th,
.page-products .pd-table td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--hairline-soft);
}

.page-products .pd-table thead th {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--ink-teal);
  background: var(--slate);
  border-bottom: 1px solid var(--copper);
  white-space: nowrap;
}

.page-products .pd-table tbody th {
  font-weight: 600;
  color: var(--ink-teal);
  background: #fbfcfa;
  white-space: nowrap;
}

.page-products .pd-table td {
  color: rgba(17, 24, 23, 0.76);
}

.page-products .pd-table .is-current {
  background: rgba(184, 131, 62, 0.1);
  color: var(--ink);
}

.page-products .pd-table thead .is-current {
  background: var(--ink-teal);
  color: var(--copper-bright);
}

/* 折叠说明 */
.page-products .pd-details {
  margin-top: 18px;
  background: var(--white);
  border: 1px solid var(--hairline);
}

.page-products .pd-details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--ink-teal);
}

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

.page-products .pd-details summary::after {
  content: "+";
  font-size: 16px;
  line-height: 1;
  color: var(--copper);
}

.page-products .pd-details[open] summary::after {
  content: "–";
}

.page-products .pd-details[open] summary {
  border-bottom: 1px solid var(--hairline-soft);
}

.page-products .pd-details__body {
  padding: 14px 16px 18px;
}

.page-products .pd-details__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(17, 24, 23, 0.76);
}

/* 03 / 04 双栏错位 */
.page-products .pd-split {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
}

.page-products .pd-steps {
  list-style: none;
  counter-reset: pdstep;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--copper);
}

.page-products .pd-steps li {
  counter-increment: pdstep;
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 4px 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--hairline-soft);
}

.page-products .pd-steps li::before {
  content: counter(pdstep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--copper);
  padding-top: 5px;
}

.page-products .pd-steps h3 {
  margin: 0 0 4px;
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--ink-teal);
}

.page-products .pd-steps p {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: rgba(17, 24, 23, 0.76);
  grid-column: 2;
}

/* 05 支持链 */
.page-products .pd-chain {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--copper);
  border-left: 1px solid var(--hairline);
}

.page-products .pd-chain li {
  background: var(--white);
  border-right: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 18px 16px 20px;
}

.page-products .pd-chain__num {
  display: block;
  font-family: var(--font-serif);
  font-size: 34px;
  line-height: 1.1;
  color: var(--copper);
}

.page-products .pd-chain h3 {
  margin: 4px 0 8px;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink-teal);
}

.page-products .pd-chain p {
  margin: 0 0 12px;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(17, 24, 23, 0.72);
}

.page-products .pd-chain__link {
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--celadon);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  word-break: break-all;
}

.page-products .pd-chain__link:hover,
.page-products .pd-chain__link:focus-visible {
  color: var(--copper);
  border-bottom-color: var(--copper);
}

.page-products .pd-rhythm {
  margin: 22px 0 26px;
  padding: 14px 16px;
  background: var(--slate);
  border-left: 3px solid var(--celadon);
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--ink-teal);
}

/* 收尾行动区 */
.page-products .pd-cta {
  margin-block: clamp(30px, 5vw, 56px) clamp(38px, 6vw, 72px);
  background: var(--ink-deep);
  color: var(--paper);
  padding: clamp(24px, 4vw, 40px);
  display: grid;
  gap: 22px;
  border-top: 3px solid var(--copper);
}

.page-products .pd-cta .eyebrow {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--copper-bright);
}

.page-products .pd-cta h2 {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: clamp(21px, 3vw, 30px);
  font-weight: 600;
  line-height: 1.35;
  color: var(--white);
}

.page-products .pd-cta p {
  margin: 0;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(242, 245, 242, 0.78);
}

.page-products .pd-cta__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
}

.page-products .pd-cta__links .btn {
  display: inline-block;
  font-size: 13px;
  white-space: nowrap;
}

.page-products .pd-cta__links .btn--ghost {
  border-color: rgba(214, 163, 92, 0.55);
  color: var(--paper);
}

.page-products .pd-cta__links .btn--ghost:hover,
.page-products .pd-cta__links .btn--ghost:focus-visible {
  border-color: var(--amber);
  color: var(--amber);
}

/* 断点：平板 */
@media (min-width: 720px) {
  .page-products .pd-quick {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-products .pd-quick li {
    border-bottom: 0;
    border-right: 1px solid rgba(184, 131, 62, 0.2);
  }

  .page-products .pd-quick li:last-child {
    border-right: 0;
  }

  .page-products .pd-map {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-products .pd-chain {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-products .pd-cta {
    grid-template-columns: 1fr;
    align-items: center;
  }
}

/* 断点：桌面 */
@media (min-width: 900px) {
  .page-products .pd-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(250px, 0.72fr);
    align-items: end;
    gap: 40px;
  }

  .page-products .pd-quick {
    grid-template-columns: repeat(5, 1fr);
  }

  .page-products .pd-map {
    grid-template-columns: repeat(5, 1fr);
  }

  .page-products .pd-verlayout {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-products .pd-rail {
    position: sticky;
    top: 88px;
  }

  .page-products .pd-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-products .pd-split--reverse {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }

  .page-products .pd-chain {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-products .pd-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 32px;
  }

  .page-products .pd-cta__links {
    justify-content: flex-end;
    max-width: 22rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pd-quick a,
  .page-products .pd-map__item a {
    transition: none;
  }
}