.page-products {
  --pp-col-gap: clamp(32px, 5vw, 72px);
  background:
    radial-gradient(1100px 520px at 88% -6%, rgba(47, 227, 192, 0.09), transparent 62%),
    radial-gradient(820px 460px at 4% 16%, rgba(75, 107, 255, 0.11), transparent 64%);
  color: var(--white);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-products .shell {
  position: relative;
}

/* ---------- 首屏 ---------- */
.page-products .dl-hero {
  padding: clamp(22px, 4vw, 40px) 0 clamp(22px, 3vw, 34px);
}

.page-products .dl-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
  align-items: center;
}

.page-products .dl-hero__lead h1 {
  margin: 14px 0 18px;
  max-width: 22ch;
}

.page-products .dl-hero__lead .lede {
  max-width: 56ch;
}

.page-products .dl-hero__scope {
  position: relative;
  width: min(300px, 74vw);
  aspect-ratio: 1 / 1;
  margin-inline: auto;
  display: grid;
  place-items: center;
}

.page-products .dl-hero__orbit {
  position: absolute;
  inset: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.page-products .dl-hero__orbit--inner {
  inset: 22%;
  border-style: dashed;
  border-color: rgba(47, 227, 192, 0.42);
  animation: pp-orbit 90s linear infinite;
}

.page-products .dl-hero__core {
  display: grid;
  gap: 8px;
  text-align: center;
}

.page-products .dl-hero__core b {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 5.4vw, 46px);
  letter-spacing: 0.02em;
  color: var(--white);
  line-height: 1;
}

.page-products .dl-hero__core em {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

@keyframes pp-orbit {
  to { transform: rotate(360deg); }
}

/* ---------- 版本线档案夹页签 ---------- */
.page-products .verfile {
  margin-top: clamp(26px, 4vw, 44px);
}

.page-products .verfile__rail {
  display: flex;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  scrollbar-width: none;
}

.page-products .verfile__rail::-webkit-scrollbar {
  display: none;
}

.page-products .verfile__tab {
  flex: 0 0 auto;
  padding: 13px 20px;
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-products .verfile__tab:hover {
  color: var(--neon-soft);
}

.page-products .verfile__tab[aria-selected="true"] {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

.page-products .verfile__panel {
  display: none;
  padding: 20px 0 0;
  max-width: 72ch;
}

.page-products .verfile__panel.is-active {
  display: block;
}

.page-products .verfile__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 0 0 12px;
}

.page-products .verfile__since {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-products .verfile__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--white);
}

/* ---------- 主体两栏 ---------- */
.page-products .dl-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(34px, 5vw, 60px);
  padding: clamp(34px, 6vw, 78px) 0 clamp(56px, 8vw, 104px);
  border-top: 1px solid var(--line);
  margin-top: clamp(20px, 3vw, 34px);
}

/* ---------- 参数表 ---------- */
.page-products .specsheet {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(12, 21, 51, 0.92), rgba(6, 11, 31, 0.92));
  padding: 22px 20px 20px;
}

.page-products .specsheet__title {
  margin: 10px 0 16px;
  font-size: clamp(20px, 2.2vw, 24px);
  line-height: 1.3;
}

.page-products .specsheet__list {
  margin: 0;
  border-top: 1px solid var(--line);
}

.page-products .specsheet__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: baseline;
  padding: 9px 6px;
  border-bottom: 1px solid var(--line-soft);
  transition: background-color 0.22s var(--ease);
}

.page-products .specsheet__row:hover {
  background: rgba(47, 227, 192, 0.07);
}

.page-products .specsheet__row dt {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-products .specsheet__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--orange);
  text-align: right;
  overflow-wrap: anywhere;
}

.page-products .specsheet .copy-row {
  margin-top: 18px;
}

/* ---------- 右侧内容列 ---------- */
.page-products .dl-main {
  display: grid;
  gap: clamp(46px, 6vw, 82px);
  min-width: 0;
}

.page-products .dl-section {
  scroll-margin-top: calc(var(--header-h) + 28px);
  min-width: 0;
}

.page-products .dl-section h2 {
  margin: 12px 0 16px;
}

.page-products .dl-section .lede {
  max-width: 62ch;
  margin: 0 0 24px;
}

.page-products .frame {
  margin: 0 0 26px;
}

.page-products .frame img {
  max-width: 100%;
  height: auto;
}

/* ---------- 版本构成清单 ---------- */
.page-products .parts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .parts__item {
  background: var(--ink);
  padding: 16px 18px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

.page-products .parts__k {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--neon);
  margin-bottom: 6px;
}

/* ---------- 设备要求 ---------- */
.page-products .reqlist {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-products .reqlist__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 15px 0 15px 16px;
  border-bottom: 1px solid var(--line);
  border-left: 2px solid transparent;
  transition: border-color 0.24s var(--ease);
}

.page-products .reqlist__item:hover {
  border-left-color: var(--orange);
}

.page-products .reqlist__k {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-products .reqlist__v {
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--white);
}

/* ---------- 安装步骤 ---------- */
.page-products .steps {
  border-top: 1px solid var(--line);
}

.page-products .steps__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 32px;
  gap: 10px 16px;
  align-items: start;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-products .steps__num {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--neon);
  letter-spacing: 0;
}

.page-products .steps__body {
  min-width: 0;
}

.page-products .steps__title {
  margin: 6px 0 6px;
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--white);
}

.page-products .steps__note {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--muted);
}

.page-products .checklist__item.is-done .steps__title {
  color: var(--muted);
}

.page-products .checklist__box {
  width: 30px;
  height: 30px;
  margin-top: 6px;
  padding: 0;
  position: relative;
  justify-self: end;
  border: 1px solid var(--line);
  background: transparent;
  cursor: pointer;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-products .checklist__box::after {
  content: "";
  position: absolute;
  inset: 32% 30% 34% 30%;
  border-left: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(-45deg) scale(0.5);
  opacity: 0;
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-products .checklist__box:hover {
  border-color: var(--neon);
}

.page-products .checklist__box[aria-pressed="true"] {
  background: var(--neon);
  border-color: var(--neon);
}

.page-products .checklist__box[aria-pressed="true"]::after {
  opacity: 1;
  transform: rotate(-45deg) scale(1);
}

.page-products .dl-hint {
  margin: 20px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .dl-hint__link {
  color: var(--neon-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(139, 255, 228, 0.45);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-products .dl-hint__link:hover {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

/* ---------- 权限 ---------- */
.page-products .perm {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .perm__item {
  background: var(--ink-2);
  padding: 22px 20px;
}

.page-products .perm__icon {
  display: block;
  width: 40px;
  height: 40px;
  margin-bottom: 14px;
  color: var(--neon);
}

.page-products .perm__icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.page-products .perm__name {
  margin: 0 0 8px;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--white);
}

.page-products .perm__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--muted);
}

/* ---------- 版本历史 ---------- */
.page-products .tl {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-products .tl::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 12px;
  width: 1px;
  background: var(--line);
}

.page-products .tl__item {
  position: relative;
  padding: 0 0 30px 34px;
}

.page-products .tl__item:last-child {
  padding-bottom: 0;
}

.page-products .tl__dot {
  position: absolute;
  left: 0;
  top: 6px;
  width: 15px;
  height: 15px;
  border: 1px solid var(--neon);
  border-radius: 50%;
  background: var(--ink);
}

.page-products .tl__item--now .tl__dot {
  background: var(--neon);
  box-shadow: 0 0 0 5px rgba(47, 227, 192, 0.16);
}

.page-products .tl__era {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-products .tl__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.2vw, 23px);
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-products .tl__text {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 发布节奏 ---------- */
.page-products .cadence {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .cadence__cell {
  background: var(--ink);
  padding: 20px 18px;
}

.page-products .cadence__k {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-products .cadence__t {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--white);
}

.page-products .cadence__d {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--muted);
}

.page-products .dl-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 24px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-products .parts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .reqlist__item {
    grid-template-columns: 170px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 780px) {
  .page-products .perm {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-products .dl-hero__grid {
    grid-template-columns: minmax(0, 7.4fr) minmax(0, 4.6fr);
  }

  .page-products .dl-hero__scope {
    margin-inline: auto 0;
  }

  .page-products .steps__item {
    grid-template-columns: 52px minmax(0, 1fr) 32px;
    gap: 12px 20px;
  }
}

@media (min-width: 1060px) {
  .page-products .dl-body {
    grid-template-columns: minmax(0, 3.1fr) minmax(0, 8.9fr);
    gap: var(--pp-col-gap);
  }

  .page-products .dl-aside {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .dl-hero__orbit--inner {
    animation: none;
  }

  .page-products .verfile__tab,
  .page-products .specsheet__row,
  .page-products .reqlist__item,
  .page-products .checklist__box,
  .page-products .checklist__box::after,
  .page-products .dl-hint__link {
    transition: none;
  }
}
</main>