.page-products {
  --pp-card-pad: clamp(18px, 2.4vw, 28px);
  --pp-rule: 1px solid var(--grid-line);
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* ---------- 面包屑 ---------- */
.page-products .breadcrumb {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 18px 0 clamp(22px, 4vw, 40px);
}
.page-products .breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.page-products .breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--grid);
}
.page-products .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) ease, border-color var(--t-fast) ease;
}
.page-products .breadcrumb a:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

/* ---------- 骨架 ---------- */
.page-products .layout-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 44px);
}
@media (min-width: 1024px) {
  .page-products .layout-split {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 72px);
  }
}
.page-products .content-column {
  min-width: 0;
}

/* ---------- 坐标轴 ---------- */
.page-products .axis-rail {
  border-left: 2px solid var(--grid);
  padding-left: 16px;
}
@media (min-width: 1024px) {
  .page-products .axis-rail {
    position: sticky;
    top: 120px;
    align-self: start;
  }
}
.page-products .axis-rail__title {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
  margin: 0 0 12px;
}
.page-products .axis-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 2px 16px;
}
@media (min-width: 1024px) {
  .page-products .axis-rail__list {
    flex-direction: column;
    gap: 1px;
  }
}
.page-products .axis-rail__link {
  display: block;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  padding: 4px 0;
  border-left: 2px solid transparent;
  margin-left: -18px;
  padding-left: 16px;
  transition: color var(--t-fast) ease, border-color var(--t-fast) ease;
}
.page-products .axis-rail__link:hover,
.page-products .axis-rail__link[aria-current="true"] {
  color: var(--signal);
  border-left-color: var(--signal);
}

/* ---------- 通用排版 ---------- */
.page-products .section {
  margin-bottom: clamp(52px, 8vw, 96px);
}
.page-products .section:last-child {
  margin-bottom: 0;
}
.page-products .section-head {
  margin-bottom: clamp(20px, 3vw, 30px);
}
.page-products .eyebrow {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cyan);
  margin: 0 0 12px;
}
.page-products .h-display {
  font-family: var(--f-display);
  font-size: clamp(30px, 6vw, 56px);
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.14;
  color: var(--mist);
  margin: 0 0 18px;
}
.page-products .h-serif {
  font-family: var(--f-serif);
  font-size: clamp(21px, 3vw, 29px);
  font-weight: 600;
  line-height: 1.42;
  color: var(--mist);
  margin: 0 0 10px;
}
.page-products .lede {
  font-size: 17px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 38em;
  margin: 0;
}
.page-products .section-head__lede {
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--muted);
  max-width: 38em;
  margin: 0;
}

/* ---------- 媒体框 ---------- */
.page-products .media-frame {
  position: relative;
  margin: 0;
  background: var(--hull);
  overflow: hidden;
}
.page-products .media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.4;
  pointer-events: none;
}
.page-products .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100%;
}

/* ---------- 首屏 ---------- */
.page-products .dl-hero__band {
  aspect-ratio: 16 / 9;
  border-left: 3px solid var(--signal);
  margin-bottom: clamp(22px, 3.5vw, 36px);
}
@media (min-width: 780px) {
  .page-products .dl-hero__band {
    aspect-ratio: 16 / 5;
  }
}

.page-products .dl-grid {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(28px, 4vw, 44px);
}
@media (min-width: 860px) {
  .page-products .dl-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }
  .page-products .dl-card--desktop {
    margin-top: 56px;
  }
}

.page-products .dl-card {
  position: relative;
  background: var(--hull);
  border: 1px solid var(--signal);
  padding: var(--pp-card-pad);
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-self: start;
  transition: background-color var(--t-base) ease, box-shadow var(--t-base) ease;
}
.page-products .dl-card:hover {
  background: var(--deep);
  box-shadow: inset 0 0 0 1px var(--signal);
}
.page-products .dl-card--desktop {
  border-color: var(--grid);
}
.page-products .dl-card--desktop:hover {
  border-color: var(--signal);
}
.page-products .dl-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.page-products .dl-card .h-serif {
  font-size: clamp(20px, 2.4vw, 25px);
  margin: 0;
}
.page-products .dl-card__intro {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}
.page-products .dl-card__media {
  aspect-ratio: 4 / 3;
}
.page-products .dl-card__notes {
  border-left: 2px solid var(--cyan);
  padding-left: 14px;
}
.page-products .dl-card__notes-title {
  margin: 0 0 8px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}
.page-products .dl-card__notes ul {
  margin: 0;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}
.page-products .dl-card__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: auto;
  padding-top: 6px;
}

/* ---------- 规格表 ---------- */
.page-products .spec-list {
  margin: 0;
  border-top: var(--pp-rule);
}
.page-products .spec-list__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 8px 0;
  border-bottom: var(--pp-rule);
}
.page-products .spec-list dt {
  font-size: 13px;
  color: var(--muted);
}
.page-products .spec-list dd {
  margin: 0;
  font-size: 13.5px;
  color: var(--mist);
  text-align: right;
}

/* ---------- 按钮 ---------- */
.page-products .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 20px;
  font-size: 13.5px;
  letter-spacing: 0.05em;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: background-color var(--t-fast) ease, border-color var(--t-fast) ease, color var(--t-fast) ease;
}
.page-products .btn--signal {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--ink);
}
.page-products .btn--signal:hover {
  background: var(--dim);
  border-color: var(--dim);
  color: var(--mist);
}
.page-products .btn--ghost {
  background: transparent;
  border-color: var(--grid);
  color: var(--mist);
}
.page-products .btn--ghost:hover {
  border-color: var(--signal);
  color: var(--signal);
}
.page-products .btn:focus-visible,
.page-products .ghost-btn:focus-visible,
.page-products .track__step > summary:focus-visible,
.page-products .text-link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-products .ghost-btn {
  background: transparent;
  border: 1px solid var(--grid);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 6px 12px;
  cursor: pointer;
  border-radius: var(--radius);
  transition: border-color var(--t-fast) ease, color var(--t-fast) ease, background-color var(--t-fast) ease;
}
.page-products .ghost-btn:hover {
  border-color: var(--signal);
  color: var(--signal);
}
.page-products .ghost-btn[data-copied] {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-products .text-link {
  display: inline-block;
  color: var(--signal);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid var(--grid);
  padding-bottom: 2px;
  transition: border-color var(--t-fast) ease, color var(--t-fast) ease;
}
.page-products .text-link:hover {
  border-bottom-color: var(--signal);
}
.page-products .text-link--inline {
  display: inline;
  padding-bottom: 1px;
}

/* ---------- 四步轨道 ---------- */
.page-products .track-band {
  aspect-ratio: 16 / 9;
  margin-bottom: 26px;
}
@media (min-width: 720px) {
  .page-products .track-band {
    aspect-ratio: 1400 / 460;
  }
}

.page-products .track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 22px;
  position: relative;
}
@media (min-width: 900px) {
  .page-products .track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }
  .page-products .track::before {
    content: "";
    position: absolute;
    top: 8px;
    left: 8px;
    right: calc(25% - 8px);
    border-top: 1px dashed var(--grid);
    z-index: 0;
  }
}
.page-products .track__item {
  position: relative;
  min-width: 0;
}
@media (max-width: 899px) {
  .page-products .track__item:not(:last-child)::after {
    content: "";
    position: absolute;
    left: 6px;
    top: 24px;
    bottom: -22px;
    border-left: 1px dashed var(--grid);
  }
}
@media (min-width: 900px) {
  .page-products .track__item {
    padding-right: 22px;
  }
}

.page-products .track__step {
  position: relative;
}
.page-products .track__step > summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  padding-left: 28px;
  padding-top: 2px;
  transition: color var(--t-fast) ease;
}
.page-products .track__step > summary::-webkit-details-marker {
  display: none;
}
@media (min-width: 900px) {
  .page-products .track__step > summary {
    padding-left: 0;
    padding-top: 34px;
  }
}
.page-products .track__node {
  position: absolute;
  left: 0;
  top: 4px;
  width: 14px;
  height: 14px;
  background: var(--signal);
  box-shadow: 0 0 0 3px var(--abyss);
  z-index: 1;
  transition: background-color var(--t-fast) ease;
}
@media (min-width: 900px) {
  .page-products .track__node {
    top: 1px;
  }
}
.page-products .track__idx {
  display: block;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--signal);
  margin-bottom: 4px;
}
.page-products .track__title {
  display: block;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--mist);
}
.page-products .track__body {
  padding: 10px 0 0 28px;
}
@media (min-width: 900px) {
  .page-products .track__body {
    padding: 12px 0 0;
  }
}
.page-products .track__body p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 26em;
}
.page-products .track__step[open] > summary .track__title {
  color: var(--cyan);
}
.page-products .track__step[open] .track__node {
  background: var(--cyan);
}

/* ---------- 运行环境表 ---------- */
.page-products .req-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-left: 2px solid var(--grid);
}
.page-products .req-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14px;
}
.page-products .req-table th,
.page-products .req-table td {
  text-align: left;
  padding: 14px 14px;
  border-bottom: var(--pp-rule);
  vertical-align: top;
  line-height: 1.65;
}
.page-products .req-table thead th {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  font-weight: 400;
  color: var(--muted);
  border-bottom: 1px solid var(--grid);
  padding-top: 10px;
  padding-bottom: 10px;
}
.page-products .req-table tbody th {
  font-weight: 600;
  color: var(--mist);
  white-space: nowrap;
}
.page-products .req-table tbody th .mono {
  font-weight: 400;
  font-size: 12px;
  color: var(--muted);
  display: block;
  margin-top: 4px;
}
.page-products .req-table tbody td {
  color: var(--muted);
}
.page-products .req-table__min {
  color: var(--amber) !important;
  font-size: 15px;
  text-align: right;
  white-space: nowrap;
}
.page-products .reqs__note {
  margin: 20px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--amber);
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 38em;
}

/* ---------- 校验 ---------- */
.page-products .checksum__grid {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  margin-bottom: 28px;
}
@media (min-width: 860px) {
  .page-products .checksum__grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
    align-items: start;
  }
}
.page-products .checksum__lede {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 36em;
}
.page-products .checksum__steps {
  counter-reset: cs;
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-products .checksum__steps li {
  position: relative;
  padding-left: 38px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 34em;
}
.page-products .checksum__steps li::before {
  counter-increment: cs;
  content: counter(cs, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--signal);
  border: 1px solid var(--grid);
  padding: 1px 5px;
}
.page-products .checksum__media {
  aspect-ratio: 4 / 3;
}
@media (min-width: 860px) {
  .page-products .checksum__media {
    margin-left: 20px;
  }
}

.page-products .hash-list {
  display: grid;
  gap: 16px;
}
@media (min-width: 760px) {
  .page-products .hash-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
.page-products .hash-card {
  background: var(--paper);
  border-top: 3px solid var(--signal);
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
}
.page-products .hash-card:nth-child(2) {
  border-top-color: var(--cyan);
}
.page-products .hash-card__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}
.page-products .hash-card__tag {
  background: var(--ink);
  color: var(--paper);
  font-size: 11px;
  letter-spacing: 0.12em;
  padding: 3px 8px;
}
.page-products .hash-card__ver {
  font-size: 12px;
  color: var(--ink);
  opacity: 0.7;
}
.page-products .hash-card__val {
  display: block;
  width: 100%;
  font-size: 13px;
  line-height: 1.9;
  letter-spacing: 0.03em;
  color: var(--ink);
  word-break: break-all;
}
.page-products .hash-card .ghost-btn {
  color: var(--ink);
  border-color: rgba(10, 30, 43, 0.28);
}
.page-products .hash-card .ghost-btn:hover {
  border-color: var(--dim);
  color: var(--dim);
}
.page-products .hash-card .ghost-btn[data-copied] {
  border-color: var(--dim);
  color: var(--dim);
}

/* ---------- 兼容适配 ---------- */
.page-products .compat__grid {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
}
@media (min-width: 900px) {
  .page-products .compat__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    align-items: start;
  }
}
.page-products .compat__main p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.88;
  color: var(--muted);
  max-width: 38em;
}
.page-products .compat__main p:last-child {
  margin-bottom: 0;
}
.page-products .card {
  background: var(--hull);
  border: 1px solid var(--grid);
  padding: clamp(16px, 2vw, 22px);
  transition: border-color var(--t-base) ease;
}
.page-products .card:hover {
  border-color: var(--signal);
}
.page-products .card__head {
  margin-bottom: 14px;
}
.page-products .compat__aside-title {
  margin: 0 0 14px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}
.page-products .compat__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-products .compat__list li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}
.page-products .compat__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background: var(--signal);
}
.page-products .card__foot {
  margin-top: 18px;
  padding-top: 14px;
  border-top: var(--pp-rule);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.06em;
}
.page-products .compat__aside .text-link {
  margin-top: 14px;
}

/* ---------- 更新节奏 ---------- */
.page-products .cadence__grid {
  display: grid;
  gap: clamp(18px, 2.6vw, 26px);
  margin-top: 24px;
}
@media (min-width: 780px) {
  .page-products .cadence__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
.page-products .cadence__item {
  border-top: 2px solid var(--signal);
  padding-top: 16px;
}
.page-products .cadence__item:nth-child(2) {
  border-top-color: var(--amber);
}
.page-products .cadence__item:nth-child(3) {
  border-top-color: var(--cyan);
}
.page-products .cadence__num {
  display: block;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
  margin-bottom: 10px;
}
.page-products .cadence__title {
  margin: 0 0 10px;
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--mist);
}
.page-products .cadence__item p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.82;
  color: var(--muted);
}
.page-products .cadence__note {
  margin: 30px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--grid);
  font-size: 14px;
  line-height: 1.82;
  color: var(--muted);
  max-width: 40em;
}

/* ---------- 联系条 ---------- */
.page-products .contact-strip {
  background: var(--hull);
  border-left: 3px solid var(--signal);
  padding: clamp(22px, 3vw, 34px);
}
.page-products .contact-strip__lede {
  margin: 0 0 20px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 38em;
}
.page-products .contact-strip__items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-products .contact-strip__items li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}
.page-products .contact-strip__key {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
  min-width: 68px;
}
.page-products .contact-strip__items code {
  font-family: var(--f-mono);
  font-size: 14px;
  color: var(--mist);
  background: var(--deep);
  padding: 6px 11px;
  word-break: break-all;
}
.page-products .contact-strip__meta {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: var(--pp-rule);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  .page-products .dl-card,
  .page-products .btn,
  .page-products .ghost-btn,
  .page-products .text-link,
  .page-products .axis-rail__link,
  .page-products .breadcrumb a {
    transition: none;
  }
}