/* ===== 下载中心 · 页面作用域 ===== */
.page-products {
  --dl-line: rgba(44, 75, 140, .55);
  --dl-line-soft: rgba(44, 75, 140, .28);
  --dl-surface: rgba(7, 20, 51, .62);
  --dl-surface-2: rgba(18, 48, 107, .42);
  position: relative;
  display: block;
  overflow-x: clip;
  color: var(--text-bright);
  background-color: var(--ink-900);
  background-image:
    linear-gradient(to right, rgba(44, 75, 140, .10) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(44, 75, 140, .10) 1px, transparent 1px),
    radial-gradient(900px 520px at 86% -4%, rgba(51, 242, 208, .075), transparent 68%),
    radial-gradient(720px 480px at 4% 24%, rgba(255, 138, 60, .05), transparent 70%);
  background-size: 96px 96px, 96px 96px, auto, auto;
  background-repeat: repeat, repeat, no-repeat, no-repeat;
}

.page-products > section {
  padding-block: clamp(48px, 7vw, 96px);
}

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

.page-products .dl-crumb {
  padding-top: clamp(20px, 3vw, 32px);
}

/* ===== 通用小标题组 ===== */
.page-products .dl-head {
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-products .dl-head h2,
.page-products .dl-vers__aside h2,
.page-products .dl-next__text h2 {
  font-size: clamp(24px, 3.8vw, 40px);
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: .02em;
  margin: 10px 0 14px;
  max-width: 20em;
}

.page-products .dl-head__note,
.page-products .dl-vers__note,
.page-products .dl-next__text > p {
  color: var(--text-muted);
  line-height: 1.85;
  max-width: 52em;
}

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

/* ===== 首屏 ===== */
.page-products .dl-intro {
  padding-block: clamp(28px, 4vw, 52px) clamp(48px, 7vw, 88px);
}

.page-products .dl-intro__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  grid-template-columns: minmax(0, 1fr);
}

.page-products .dl-intro h1 {
  font-size: clamp(29px, 5.4vw, 58px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: .02em;
  margin: 14px 0 20px;
  max-width: 17em;
}

.page-products .dl-intro__lede {
  color: var(--text-muted);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
  max-width: 42em;
}

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

.page-products .dl-intro__side {
  display: grid;
  gap: 1px;
  border: 1px solid var(--dl-line);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--dl-line);
  align-self: start;
}

.page-products .dl-intro__fact {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 18px 20px;
  background-color: var(--ink-900);
}

.page-products .dl-intro__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.6vw, 36px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--cyan);
}

.page-products .dl-intro__cap {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
}

/* ===== 设备选择 ===== */
.page-products .dl-pick {
  position: relative;
}

.page-products .dl-pick__r {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-products .dl-pick__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(22px, 3vw, 32px);
}

.page-products .dl-pick__tab {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  padding: 10px 20px;
  border: 1px solid var(--dl-line);
  border-radius: 999px;
  color: var(--text-muted);
  cursor: pointer;
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
}

.page-products .dl-pick__tab:hover {
  color: var(--text-bright);
  border-color: var(--cyan-30);
}

.page-products #dl-dev-pc:checked ~ .dl-pick__tabs [for="dl-dev-pc"],
.page-products #dl-dev-mob:checked ~ .dl-pick__tabs [for="dl-dev-mob"] {
  color: var(--ink-900);
  background-color: var(--cyan);
  border-color: var(--cyan);
  font-weight: 700;
}

.page-products #dl-dev-pc:focus-visible ~ .dl-pick__tabs [for="dl-dev-pc"],
.page-products #dl-dev-mob:focus-visible ~ .dl-pick__tabs [for="dl-dev-mob"] {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-products .dl-pick__stage {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  grid-template-columns: minmax(0, 1fr);
}

.page-products .dl-dev {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--dl-line);
  border-radius: var(--radius);
  background-color: var(--dl-surface);
  overflow: hidden;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-products #dl-dev-pc:checked ~ .dl-pick__stage .dl-dev--pc,
.page-products #dl-dev-mob:checked ~ .dl-pick__stage .dl-dev--mob {
  border-color: var(--cyan-30);
  box-shadow: 0 0 0 1px rgba(51, 242, 208, .12), 0 18px 40px -28px rgba(51, 242, 208, .5);
}

.page-products .dl-dev__body {
  padding: clamp(20px, 2.6vw, 28px);
}

.page-products .dl-dev__kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
  margin-bottom: 10px;
}

.page-products .dl-dev__body h3 {
  font-size: clamp(18px, 2.1vw, 22px);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: .01em;
  margin-bottom: 12px;
}

.page-products .dl-dev__scene {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.85;
  margin-bottom: 16px;
}

.page-products .dl-dev__list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .dl-dev__list li {
  position: relative;
  padding-left: 20px;
  color: var(--text-bright);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-products .dl-dev__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 9px;
  height: 2px;
  background-color: var(--cyan);
}

.page-products .dl-dev__need {
  border-top: 1px dashed var(--dl-line-soft);
  padding-top: 14px;
  color: var(--text-muted);
  font-size: 13.5px;
  line-height: 1.7;
}

.page-products .dl-dev__needlab {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--amber);
  border: 1px solid rgba(255, 200, 87, .45);
  border-radius: 3px;
  padding: 2px 7px;
}

/* ===== 版本序列 ===== */
.page-products .dl-vers {
  background: linear-gradient(180deg, rgba(18, 48, 107, .28), rgba(7, 20, 51, 0) 72%);
}

.page-products .dl-vers__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  grid-template-columns: minmax(0, 1fr);
}

.page-products .dl-vers__media {
  margin-top: 26px;
}

.page-products .dl-ver {
  border: 1px solid var(--dl-line);
  border-radius: var(--radius-sm);
  background-color: rgba(7, 20, 51, .6);
  overflow: hidden;
}

.page-products .dl-ver + .dl-ver {
  margin-top: 10px;
}

.page-products .dl-ver summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  transition: background-color .18s var(--ease);
}

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

.page-products .dl-ver summary:hover,
.page-products .dl-ver summary:focus-visible {
  background-color: var(--cyan-08);
}

.page-products .dl-ver summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-products .dl-ver[open] summary {
  border-bottom: 1px solid var(--dl-line-soft);
}

.page-products .dl-ver__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--ink-900);
  background-color: var(--cyan);
  border-radius: 4px;
  padding: 5px 11px;
}

.page-products .dl-ver__name {
  flex: 1 1 200px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
}

.page-products .dl-ver__body {
  padding: 16px 18px 20px;
  color: var(--text-muted);
  font-size: 14.5px;
  line-height: 1.85;
}

.page-products .dl-vers__foot {
  margin-top: 22px;
  padding-left: 16px;
  border-left: 2px solid var(--cyan-30);
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.85;
  max-width: 46em;
}

/* ===== 安装与首次配置 ===== */
.page-products .dl-setup__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  grid-template-columns: minmax(0, 1fr);
}

.page-products .dl-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-products .dl-step {
  position: relative;
  overflow: hidden;
  padding: 24px 24px 26px;
  border: 1px solid var(--dl-line);
  border-radius: var(--radius);
  background-color: var(--dl-surface);
}

.page-products .dl-step::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan), rgba(51, 242, 208, 0));
}

.page-products .dl-step__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .04em;
  color: rgba(51, 242, 208, .38);
  margin-bottom: 12px;
}

.page-products .dl-step h3 {
  font-size: 17px;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 10px;
}

.page-products .dl-step p {
  color: var(--text-muted);
  font-size: 14.5px;
  line-height: 1.85;
}

.page-products .dl-setup__figure {
  margin: 0;
}

.page-products .dl-setup__figure .media-frame {
  border: 1px solid var(--dl-line);
  border-radius: var(--radius);
  overflow: hidden;
}

/* ===== 资料库栏目结构 ===== */
.page-products .dl-cats {
  background: linear-gradient(180deg, rgba(7, 20, 51, 0) 0%, rgba(18, 48, 107, .22) 100%);
}

.page-products .dl-cats__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  grid-template-columns: minmax(0, 1fr);
}

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

.page-products .dl-cat {
  border-bottom: 1px solid var(--dl-line-soft);
}

.page-products .dl-cat summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 17px 4px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  transition: color .18s var(--ease), background-color .18s var(--ease);
}

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

.page-products .dl-cat summary:hover,
.page-products .dl-cat summary:focus-visible {
  color: var(--cyan);
}

.page-products .dl-cat summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-products .dl-cat__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
  flex: 0 0 auto;
}

.page-products .dl-cat__sub {
  list-style: none;
  margin: 0 0 16px 10px;
  padding: 0 0 0 24px;
  border-left: 1px solid var(--cyan-30);
  display: grid;
  gap: 9px;
}

.page-products .dl-cat__sub li {
  position: relative;
  padding-left: 16px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
}

.page-products .dl-cat__sub li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 7px;
  height: 1px;
  background-color: var(--cyan-30);
}

.page-products .dl-cats__figure {
  margin: 0;
  align-self: start;
}

.page-products .dl-cats__figure .media-frame {
  border: 1px solid var(--dl-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-products .dl-cats__hint {
  margin-top: 18px;
  padding-left: 16px;
  border-left: 2px solid var(--cyan-30);
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.85;
}

/* ===== 访问不顺时 ===== */
.page-products .dl-fallback__card {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: clamp(24px, 3vw, 40px);
  grid-template-columns: minmax(0, 1fr);
  padding: clamp(24px, 4vw, 48px);
  border: 1px solid var(--dl-line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(18, 48, 107, .62), rgba(7, 20, 51, .9));
}

.page-products .dl-fallback__card::before {
  content: "";
  position: absolute;
  top: -70px;
  right: -70px;
  width: 230px;
  height: 230px;
  background-color: var(--cyan-08);
  transform: rotate(-6deg);
  pointer-events: none;
}

.page-products .dl-fallback__main {
  position: relative;
  z-index: 1;
}

.page-products .dl-fallback__main h2 {
  font-size: clamp(22px, 3.2vw, 34px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: .02em;
  margin: 10px 0 16px;
  max-width: 18em;
}

.page-products .dl-fallback__lede {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.9;
  max-width: 46em;
}

.page-products .dl-fallback__steps {
  list-style: none;
  margin: 24px 0 28px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .dl-fallback__steps li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--text-bright);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-products .dl-fallback__n {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid var(--cyan-30);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--cyan);
}

.page-products .dl-fallback__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .dl-fallback__side {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: flex-start;
  align-items: flex-start;
}

/* ===== 延伸入口 ===== */
.page-products .dl-next__inner {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  grid-template-columns: minmax(0, 1fr);
  padding-top: clamp(32px, 4vw, 56px);
  border-top: 1px solid var(--dl-line);
}

.page-products .dl-next__links {
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr);
}

.page-products .dl-next__link {
  display: block;
  padding: 20px 20px 22px;
  border: 1px solid var(--dl-line);
  border-radius: var(--radius);
  background-color: var(--dl-surface);
  text-decoration: none;
  color: inherit;
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-products .dl-next__link:hover,
.page-products .dl-next__link:focus-visible {
  border-color: var(--cyan);
  background-color: var(--cyan-08);
}

.page-products .dl-next__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-products .dl-next__link-cap {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
  margin-bottom: 12px;
}

.page-products .dl-next__link-t {
  display: block;
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 8px;
}

.page-products .dl-next__link-d {
  display: block;
  color: var(--text-muted);
  font-size: 13.5px;
  line-height: 1.75;
}

/* ===== 焦点环 ===== */
.page-products .btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ===== 响应式 ===== */
@media (min-width: 640px) {
  .page-products .dl-next__links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-products .dl-pick__stage {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .dl-setup__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: start;
  }

  .page-products .dl-fallback__card {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    align-items: start;
  }
}

@media (min-width: 940px) {
  .page-products .dl-intro__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }

  .page-products .dl-vers__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-products .dl-cats__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-products .dl-next__inner {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    align-items: start;
  }
}
</>