.page-products {
  --pd-gap: clamp(22px, 3.6vw, 56px);
  --pd-hair: #16324a;
  display: block;
  position: relative;
}

/* ---------- 首屏 ---------- */
.page-products .pd-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(44px, 6vw, 92px) 0 clamp(30px, 4vw, 58px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(52, 231, 208, .10), transparent 62%),
    radial-gradient(90% 70% at 6% 100%, rgba(255, 90, 31, .10), transparent 60%),
    var(--deep);
}

.page-products .pd-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(27, 58, 85, .5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27, 58, 85, .5) 1px, transparent 1px);
  background-size: 80px 80px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 76%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 76%);
  pointer-events: none;
}

.page-products .pd-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: end;
}

.page-products .pd-hero__lead .display--l {
  margin: 14px 0 0;
  color: var(--bone);
}

.page-products .pd-hero__lead .lede {
  margin-top: 20px;
  max-width: 58ch;
  color: var(--soft);
}

.page-products .pd-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-products .pd-hero__meta {
  border-top: 2px solid var(--cyan);
  padding-top: 18px;
}

.page-products .pd-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  margin: 0;
}

.page-products .pd-metrics > .stat {
  padding: 16px 14px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: block;
}

.page-products .pd-metrics dt {
  margin: 0;
}

.page-products .pd-metrics dd {
  margin: 8px 0 0;
}

.page-products .pd-unit {
  font-size: 12px;
  color: var(--mist);
  letter-spacing: .06em;
  margin-left: 4px;
}

.page-products .pd-hero__note {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--mist);
}

.page-products .pd-hero__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(52, 231, 208, .45);
}

.page-products .pd-hero__note a:hover,
.page-products .pd-hero__note a:focus-visible {
  color: var(--lava);
  border-bottom-color: var(--lava);
}

/* ---------- 通用区块头 ---------- */
.page-products .pd-head {
  max-width: 66ch;
  margin-bottom: clamp(26px, 3.6vw, 50px);
}

.page-products .pd-head .display--m {
  margin: 12px 0 0;
  color: var(--bone);
}

.page-products .pd-head .lede {
  margin-top: 16px;
  color: var(--soft);
}

.page-products .pd-sub {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--bone);
  margin: 0 0 16px;
}

.page-products .pd-sub::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 2px;
  background: var(--lava);
  vertical-align: middle;
  margin-right: 10px;
}

.page-products .pd-note {
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
  margin-top: 18px;
}

.page-products .pd-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(52, 231, 208, .45);
}

.page-products .pd-note a:hover,
.page-products .pd-note a:focus-visible {
  color: var(--lava);
  border-bottom-color: var(--lava);
}

/* ---------- A 模块清单 ---------- */
.page-products .pd-a {
  display: grid;
  gap: clamp(26px, 3.4vw, 52px);
}

.page-products .pd-a__list {
  border-bottom: 1px solid var(--line);
}

.page-products .pd-mod {
  border-top: 1px solid var(--line);
}

.page-products .pd-mod > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) 28px;
  align-items: center;
  gap: 10px;
  padding: 18px 4px 18px 0;
  position: relative;
  transition: transform .18s ease-out, background-color .18s ease-out;
}

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

.page-products .pd-mod > summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 3px;
  background: transparent;
}

.page-products .pd-mod[open] > summary::before {
  background: var(--lava);
}

.page-products .pd-mod > summary:hover {
  transform: translateY(-2px);
  background: rgba(12, 35, 56, .55);
}

.page-products .pd-mod > summary:focus-visible {
  outline: 2px solid var(--lava);
  outline-offset: 2px;
}

.page-products .pd-mod__idx {
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--mist);
  padding-left: 12px;
}

.page-products .pd-mod[open] .pd-mod__idx {
  color: var(--lava);
}

.page-products .pd-mod__name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--bone);
}

.page-products .pd-mod__sign {
  justify-self: end;
  font-size: 20px;
  line-height: 1;
  color: var(--cyan);
  transition: transform .2s ease-out, color .2s ease-out;
}

.page-products .pd-mod[open] .pd-mod__sign {
  transform: rotate(45deg);
  color: var(--lava);
}

.page-products .pd-mod__body {
  padding: 0 4px 22px 58px;
}

.page-products .pd-mod__body p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--soft);
  margin: 0;
}

.page-products .pd-facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  margin: 14px 0 0;
  padding: 0;
}

.page-products .pd-facts li {
  display: flex;
  gap: 8px;
  font-size: 13px;
  color: var(--mist);
}

.page-products .pd-facts b {
  color: var(--cyan);
  font-weight: 500;
}

.page-products .pd-a__media {
  margin: 0;
}

.page-products .pd-a__media .media__frame {
  border: 1px solid var(--line);
}

/* ---------- B 推送 ---------- */
.page-products .pd-b {
  display: grid;
  gap: var(--pd-gap);
}

.page-products .pd-switches {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-products .pd-switches > li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 4px 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-products .pd-switches__label {
  font-size: 16px;
  font-weight: 600;
  color: var(--bone);
}

.page-products .pd-switches__desc {
  grid-column: 1 / -1;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}

.page-products .pd-switch {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: none;
  border: 0;
  padding: 4px 0;
  cursor: pointer;
  font: inherit;
  color: var(--mist);
}

.page-products .pd-switch:focus-visible {
  outline: 2px solid var(--lava);
  outline-offset: 3px;
}

.page-products .pd-switch__track {
  position: relative;
  display: inline-block;
  width: 42px;
  height: 18px;
  border: 1px solid var(--line);
  background: var(--shell);
}

.page-products .pd-switch__track i {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 12px;
  background: var(--mist);
  transition: left .18s ease-out, background-color .18s ease-out;
}

.page-products .pd-switch[aria-checked="true"] .pd-switch__track {
  border-color: var(--cyan);
}

.page-products .pd-switch[aria-checked="true"] .pd-switch__track i {
  left: 22px;
  background: var(--cyan);
}

.page-products .pd-switch[aria-checked="false"] .pd-switch__track i {
  background: var(--mist);
}

.page-products .pd-switch__state {
  font-size: 12px;
  letter-spacing: .12em;
  white-space: nowrap;
}

.page-products .pd-switch[aria-checked="true"] .pd-switch__state {
  color: var(--cyan);
}

.page-products .pd-latency {
  margin-top: 30px;
  border: 1px solid var(--line);
  background: var(--shell);
  padding: 18px 18px 16px;
}

.page-products .pd-latency__title {
  margin: 0;
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-products .pd-latency__scale {
  display: flex;
  justify-content: space-between;
  margin-top: 18px;
  font-size: 12px;
  color: var(--mist);
  letter-spacing: .08em;
}

.page-products .pd-latency__track {
  position: relative;
  height: 8px;
  margin-top: 8px;
  background: var(--deep);
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-products .pd-latency__tick {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 14%;
  background: linear-gradient(90deg, var(--cyan), var(--lava));
  animation: pd-sweep 4.6s linear infinite;
}

.page-products .pd-latency:hover .pd-latency__tick,
.page-products .pd-latency:focus-within .pd-latency__tick {
  animation-play-state: paused;
}

@keyframes pd-sweep {
  0% {
    left: 0;
  }
  100% {
    left: 86%;
  }
}

.page-products .pd-latency__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}

.page-products .pd-b__media {
  margin: 0;
}

.page-products .pd-b__media .media__frame {
  border: 1px solid var(--line);
}

/* ---------- C 时间轴 ---------- */
.page-products .pd-axis__hint {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
}

.page-products .pd-axis {
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 12px;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

.page-products .pd-axis::-webkit-scrollbar {
  height: 6px;
}

.page-products .pd-axis::-webkit-scrollbar-thumb {
  background: var(--line);
}

.page-products .pd-axis:focus-within {
  outline: 2px solid var(--lava);
  outline-offset: 4px;
}

.page-products .pd-track {
  display: grid;
  grid-template-columns: repeat(4, minmax(232px, 1fr));
  min-width: 980px;
}

.page-products .pd-span {
  position: relative;
  padding: 54px 22px 0 0;
}

.page-products .pd-span::after {
  content: "";
  position: absolute;
  top: 22px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--line);
}

.page-products .pd-span:last-child::after {
  right: 28px;
}

.page-products .pd-span::before {
  content: "";
  position: absolute;
  top: 16px;
  left: 0;
  width: 13px;
  height: 13px;
  background: var(--deep);
  border: 2px solid var(--cyan);
  z-index: 2;
}

.page-products .pd-span:nth-child(3)::before,
.page-products .pd-span:nth-child(4)::before {
  border-color: var(--lava);
}

.page-products .pd-span__summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 10px;
  padding-right: 10px;
}

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

.page-products .pd-span__summary:focus-visible {
  outline: 2px solid var(--lava);
  outline-offset: 3px;
}

.page-products .pd-span__idx {
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--mist);
}

.page-products .pd-span[open] .pd-span__idx {
  color: var(--lava);
}

.page-products .pd-span__name {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--bone);
  transform: rotate(-3deg);
  transform-origin: left center;
}

.page-products .pd-span__range {
  grid-column: 2;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-products .pd-gauge {
  display: block;
  height: 5px;
  margin: 16px 10px 0 0;
  background: var(--panel);
  border: 1px solid var(--line);
  position: relative;
}

.page-products .pd-gauge i {
  position: absolute;
  inset: 0 auto 0 0;
  display: block;
  background: linear-gradient(90deg, rgba(52, 231, 208, .85), rgba(52, 231, 208, .25));
}

.page-products .pd-span:nth-child(1) .pd-gauge i {
  width: 83%;
}

.page-products .pd-span:nth-child(2) .pd-gauge i {
  width: 100%;
}

.page-products .pd-span:nth-child(3) .pd-gauge i {
  width: 83%;
}

.page-products .pd-span:nth-child(4) .pd-gauge i {
  width: 50%;
  background: linear-gradient(90deg, rgba(255, 90, 31, .9), rgba(255, 90, 31, .25));
}

.page-products .pd-span__body {
  padding: 18px 10px 4px 0;
}

.page-products .pd-span__body > p {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--soft);
}

.page-products .pd-changes {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--pd-hair);
}

.page-products .pd-changes li {
  padding: 11px 0;
  border-bottom: 1px solid var(--pd-hair);
  font-size: 13px;
  line-height: 1.8;
  color: var(--mist);
}

.page-products .pd-changes span {
  display: block;
  color: var(--bone);
  font-size: 12px;
  letter-spacing: .1em;
  margin-bottom: 4px;
}

.page-products .pd-c__media {
  margin: clamp(30px, 4vw, 56px) 0 0;
}

.page-products .pd-c__media .media__frame {
  border: 1px solid var(--line);
}

/* ---------- D 安装窄栏 ---------- */
.page-products .pd-narrow {
  max-width: 640px;
  padding-left: clamp(0px, 2vw, 26px);
  border-left: 3px solid var(--lava);
}

.page-products .pd-specs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: 28px 0 0;
}

.page-products .pd-specs > div {
  background: var(--deep);
  padding: 16px 14px;
}

.page-products .pd-specs dt {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-products .pd-specs dd {
  margin: 8px 0 0;
  font-size: 20px;
  color: var(--cyan);
}

.page-products .pd-narrow .link-arrow {
  margin-top: 22px;
}

.page-products .pd-narrow .link-arrow a {
  color: var(--bone);
  font-size: 14px;
  letter-spacing: .04em;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
}

.page-products .pd-narrow .link-arrow a:hover,
.page-products .pd-narrow .link-arrow a:focus-visible {
  color: var(--lava);
  border-bottom-color: var(--lava);
}

/* ---------- E 季票配合 ---------- */
.page-products .pd-e {
  display: grid;
  gap: var(--pd-gap);
  align-items: start;
}

.page-products .pd-e__media {
  margin: 0;
}

.page-products .pd-e__media .media__frame {
  border: 1px solid var(--line);
}

.page-products .pd-e__text .display--m {
  margin: 12px 0 0;
  color: var(--bone);
}

.page-products .pd-e__text .lede {
  margin-top: 16px;
  color: var(--soft);
}

.page-products .pd-steps {
  list-style: none;
  counter-reset: none;
  margin: 30px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-products .pd-steps li {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-products .pd-steps__idx {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--lava);
}

.page-products .pd-steps p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--soft);
}

/* ---------- 页尾通栏 ---------- */
.page-products .pd-banner {
  padding-bottom: clamp(40px, 5vw, 76px);
}

.page-products .pd-banner__media {
  margin: 0;
}

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

.page-products .pd-banner__cap {
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--mist);
}

/* ---------- 图片兜底 ---------- */
.page-products .media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-products .pd-e {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-products .pd-b {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-products .pd-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-products .pd-a {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 340px);
    align-items: start;
  }

  .page-products .pd-a__media {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 1180px) {
  .page-products .pd-track {
    min-width: 0;
  }
}

@media (max-width: 639px) {
  .page-products .pd-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .pd-mod > summary {
    grid-template-columns: 38px minmax(0, 1fr) 24px;
  }

  .page-products .pd-mod__body {
    padding-left: 42px;
    padding-right: 0;
  }

  .page-products .pd-specs dd {
    font-size: 17px;
  }

  .page-products .pd-steps li {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .page-products .pd-switches > li {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-products .pd-switch {
    justify-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pd-latency__tick {
    animation: none;
    left: 82%;
    width: 16%;
  }

  .page-products .pd-mod > summary,
  .page-products .pd-mod__sign,
  .page-products .pd-switch__track i {
    transition: none;
  }

  .page-products .pd-mod > summary:hover {
    transform: none;
  }
}