/* ==========================================================
   下载中心 /download/ —— 页面专属样式，全部限定在 .page-products
   ========================================================== */

.page-products {
  color: var(--text);
}

.page-products .crumbs {
  padding-top: clamp(16px, 2.6vw, 30px);
}

/* ---------- 首屏框景 ---------- */

.page-products-hero {
  padding-top: clamp(18px, 3vw, 34px);
}

.page-products-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2.4vw, 26px);
}

.page-products .rail-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .26em;
  color: var(--muted);
  white-space: nowrap;
}

@media (min-width: 900px) {
  .page-products-hero__grid {
    grid-template-columns: 86px minmax(0, 1fr);
    align-items: start;
  }
  .page-products .rail-label {
    writing-mode: vertical-rl;
    padding-top: 6px;
  }
}

.page-products-hero__frame {
  position: relative;
  border: 2px solid var(--graphite);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
  padding: clamp(22px, 3.6vw, 52px);
  overflow: hidden;
}

.page-products-hero__frame::before {
  content: "";
  position: absolute;
  top: 16px;
  right: 16px;
  width: 44px;
  height: 1px;
  background: var(--graphite);
  box-shadow: 0 7px 0 var(--graphite), 0 14px 0 var(--graphite);
}

.page-products-hero__frame::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: clamp(80px, 18%, 220px);
  height: 3px;
  background: var(--cinnabar);
}

.page-products-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(28px, 5.2vw, 54px);
  line-height: 1.14;
  letter-spacing: -.012em;
  color: var(--paper);
  margin: 12px 0 18px;
  max-width: 19ch;
}

.page-products-hero .lead {
  margin: 0 0 24px;
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--text);
}

.page-products-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
  border-top: var(--line);
  border-bottom: var(--line);
  margin-bottom: 22px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 版本一览 ---------- */

.page-products-versions__head {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 44px);
  align-items: start;
  margin-bottom: clamp(24px, 3.6vw, 44px);
}

@media (min-width: 900px) {
  .page-products-versions__head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
  }
}

.page-products-versions__stamp {
  margin: 0;
  max-width: 300px;
}

.page-products-versions__grid {
  display: grid;
  grid-template-columns: 1fr;
  border: 2px solid var(--graphite);
  background: var(--ink-800);
}

@media (min-width: 800px) {
  .page-products-versions__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-products-versions__card {
  padding: clamp(20px, 2.6vw, 34px);
  border-bottom: 1px solid var(--graphite);
  transition: background-color .2s ease, box-shadow .2s ease, transform .2s ease;
}

.page-products-versions__card:last-child {
  border-bottom: 0;
}

@media (min-width: 800px) {
  .page-products-versions__card {
    border-bottom: 0;
    border-right: 1px solid var(--graphite);
  }
  .page-products-versions__card:last-child {
    border-right: 0;
  }
}

.page-products-versions__card:hover,
.page-products-versions__card:focus-within {
  background: var(--ink-700);
  box-shadow: inset 0 0 0 1px var(--cinnabar);
  transform: translate(-1px, -1px);
}

.page-products-versions__card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.page-products-versions__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(17px, 1.8vw, 20px);
  letter-spacing: .02em;
  color: var(--paper);
}

.page-products-versions__ver {
  display: block;
  margin: 16px 0 4px;
  font-family: var(--font-mono);
  font-size: clamp(34px, 5.4vw, 56px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.page-products-versions__spec {
  margin: 16px 0 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 9px 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.65;
}

.page-products-versions__spec dt {
  color: var(--muted);
  white-space: nowrap;
}

.page-products-versions__spec dd {
  margin: 0;
  color: var(--text);
}

/* ---------- 共用图片框 ---------- */

.page-products .media-frame {
  overflow: hidden;
  background: var(--ink-900);
}

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

.page-products .media-caption {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 桌面端安装 ---------- */

.page-products-install__head {
  max-width: 74ch;
  margin-bottom: clamp(22px, 3.2vw, 40px);
}

.page-products-install__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3.2vw, 48px);
}

@media (min-width: 940px) {
  .page-products-install__body {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
  }
}

.page-products-install__figure {
  margin: 0;
}

.page-products-install__figure .media-frame {
  aspect-ratio: 3 / 2;
}

/* ---------- 编号步骤 ---------- */

.page-products-steps {
  list-style: none;
  margin: 0 0 18px;
  padding: 0 0 0 2px;
  border-left: 1px solid var(--graphite);
  counter-reset: pp-step;
}

.page-products-steps li {
  position: relative;
  counter-increment: pp-step;
  padding: 0 0 20px 46px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

.page-products-steps li:last-child {
  padding-bottom: 4px;
}

.page-products-steps li::before {
  content: counter(pp-step, decimal-leading-zero);
  position: absolute;
  left: 12px;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}

.page-products-steps li::after {
  content: "";
  position: absolute;
  left: -3px;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 3px var(--signal-dim);
}

/* ---------- 大屏端档位条 ---------- */

.page-products-tiers {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--graphite);
  border-bottom: 1px solid var(--graphite);
  margin: clamp(20px, 3vw, 34px) 0;
}

@media (min-width: 760px) {
  .page-products-tiers {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-products-tier {
  display: grid;
  gap: 9px;
  align-content: start;
  padding: clamp(18px, 2.4vw, 28px) clamp(16px, 2vw, 26px);
  border-bottom: 1px solid var(--graphite);
  transition: background-color .2s ease, box-shadow .2s ease;
}

.page-products-tier:last-child {
  border-bottom: 0;
}

@media (min-width: 760px) {
  .page-products-tier {
    border-bottom: 0;
    border-right: 1px solid var(--graphite);
  }
  .page-products-tier:last-child {
    border-right: 0;
  }
}

.page-products-tier:hover,
.page-products-tier:focus-within {
  background: var(--ink-800);
  box-shadow: inset 0 0 0 1px var(--cinnabar);
}

.page-products-tier__scale {
  display: block;
  height: 13px;
  width: 100%;
  background-image: repeating-linear-gradient(
    90deg,
    var(--signal) 0 3px,
    transparent 3px 9px
  );
  background-repeat: no-repeat;
  background-size: 62% 100%;
  opacity: .75;
}

.page-products-tier:nth-child(1) .page-products-tier__scale { background-size: 100% 100%; }
.page-products-tier:nth-child(2) .page-products-tier__scale { background-size: 80% 100%; }
.page-products-tier:nth-child(3) .page-products-tier__scale { background-size: 62% 100%; }

.page-products-tier__res {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.page-products-tier__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-products-tier p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

.page-products-bigscreen__figure {
  margin: 0 0 clamp(26px, 3.6vw, 44px);
}

.page-products-bigscreen__figure .media-frame {
  aspect-ratio: 7 / 4;
}

.page-products-causes__title {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 24px);
  color: var(--paper);
  letter-spacing: .01em;
}

.page-products-causes {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--graphite);
}

@media (min-width: 800px) {
  .page-products-causes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-products-cause {
  padding: clamp(16px, 2vw, 24px) 0;
  border-bottom: 1px solid var(--graphite);
}

@media (min-width: 800px) {
  .page-products-cause:nth-child(odd) {
    padding-right: clamp(22px, 3vw, 40px);
    border-right: 1px solid var(--graphite);
  }
  .page-products-cause:nth-child(even) {
    padding-left: clamp(22px, 3vw, 40px);
  }
}

.page-products-cause h4 {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.45;
  color: var(--paper);
}

.page-products-cause p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 小屏端 ---------- */

.page-products-mobile__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.2vw, 48px);
  align-items: center;
}

@media (min-width: 900px) {
  .page-products-mobile__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 360px);
  }
}

.page-products-mobile__figure {
  margin: 0;
}

.page-products-mobile__figure .media-frame {
  aspect-ratio: 1 / 1;
}

.page-products-mobile__grid .link-more {
  display: inline-block;
  margin-top: 8px;
}

/* ---------- 更新与回滚 ---------- */

.page-products-update__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.2vw, 46px);
  margin-top: clamp(18px, 2.6vw, 30px);
}

@media (min-width: 940px) {
  .page-products-update__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

.page-products-check {
  list-style: none;
  margin: 0 0 clamp(22px, 3vw, 34px);
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products-check li {
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

.page-products-check li::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 9px;
  background: var(--signal);
  box-shadow: 0 0 0 3px var(--signal-dim);
}

.page-products-subtitle {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(16px, 1.9vw, 20px);
  color: var(--paper);
  letter-spacing: .01em;
}

.page-products-update__figure {
  margin: 0;
}

.page-products-update__figure .media-frame {
  aspect-ratio: 12 / 7;
}

/* ---------- 下一步入口 ---------- */

.page-products-next__list {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 2px solid var(--graphite);
  border-bottom: 2px solid var(--graphite);
}

@media (min-width: 760px) {
  .page-products-next__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-products-next__item {
  display: grid;
  gap: 6px;
  padding: clamp(18px, 2.4vw, 28px) clamp(16px, 2vw, 26px);
  border-bottom: 1px solid var(--graphite);
  color: inherit;
  text-decoration: none;
  transition: background-color .2s ease, box-shadow .2s ease;
}

.page-products-next__item:last-child {
  border-bottom: 0;
}

@media (min-width: 760px) {
  .page-products-next__item {
    border-right: 1px solid var(--graphite);
  }
  .page-products-next__item:nth-child(even) {
    border-right: 0;
  }
  .page-products-next__item:nth-last-child(-n+2) {
    border-bottom: 0;
  }
}

.page-products-next__item:hover,
.page-products-next__item:focus-visible {
  background: var(--ink-800);
  box-shadow: inset 0 0 0 1px var(--cinnabar);
}

.page-products-next__idx {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--cinnabar-soft);
  font-variant-numeric: tabular-nums;
}

.page-products-next__label {
  font-family: var(--font-display);
  font-size: clamp(17px, 2vw, 21px);
  color: var(--paper);
  letter-spacing: .01em;
}

.page-products-next__desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 窄屏收口 ---------- */

@media (max-width: 520px) {
  .page-products-hero__frame {
    padding: 20px 18px 24px;
  }
  .page-products-hero__frame::before {
    display: none;
  }
  .page-products-versions__spec {
    grid-template-columns: 1fr;
    gap: 2px 0;
  }
  .page-products-versions__spec dt {
    margin-top: 8px;
  }
  .page-products-steps li {
    padding-left: 36px;
  }
  .page-products-steps li::before {
    left: 8px;
  }
}