/* ===== 下载中心 / page-products ===== */
.page-products {
  --dl-gap: clamp(22px, 3.4vw, 42px);
}

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

.page-products .figure__media {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 首屏 ---------- */
.page-products .dl-hero {
  position: relative;
  padding: clamp(30px, 5vw, 70px) 0 clamp(36px, 5vw, 74px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-products .dl-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  top: -34%;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 227, 206, 0.11) 0%, rgba(47, 227, 206, 0) 68%);
  pointer-events: none;
}

.page-products .dl-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
}

.page-products .dl-hero__kicker {
  position: relative;
  margin: 0 0 18px;
  padding-left: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-products .dl-hero__kicker::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 9px;
  height: 1px;
  background: var(--cyan);
  transform: translateY(-50%);
}

.page-products .dl-hero__title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(32px, 6.2vw, 60px);
  line-height: 1.14;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-products .dl-hero__lede {
  max-width: 34em;
  margin: 0 0 26px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--silver);
}

.page-products .dl-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
}

.page-products .dl-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .dl-fact {
  flex: 1 1 88px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--rock);
}

.page-products .dl-fact__num {
  font-family: var(--font-mono);
  font-size: 22px;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-products .dl-fact__label {
  font-size: 12px;
  color: var(--frost);
}

@media (min-width: 900px) {
  .page-products .dl-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    grid-template-areas:
      "copy figure"
      "facts figure";
    align-items: start;
    column-gap: clamp(30px, 4vw, 58px);
    row-gap: clamp(24px, 3vw, 36px);
  }
  .page-products .dl-hero__copy { grid-area: copy; }
  .page-products .dl-hero__figure { grid-area: figure; }
  .page-products .dl-hero__facts { grid-area: facts; align-self: end; }
}

@media (max-width: 619px) {
  .page-products .dl-hero__actions { flex-direction: column; }
  .page-products .dl-hero__actions .btn { width: 100%; justify-content: center; }
}

/* ---------- 三条版本通道 ---------- */
.page-products .dl-channels__deck {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-products .dl-chan {
  position: relative;
  background: var(--rock);
  border: 1px solid var(--line);
  transition: border-color var(--t), transform var(--t), box-shadow var(--t);
}

.page-products .dl-chan::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 22px;
  bottom: 22px;
  width: 2px;
  background: var(--moss);
}

.page-products .dl-chan:hover,
.page-products .dl-chan:focus-within {
  border-color: var(--cyan);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.3);
}

.page-products .dl-chan--major { padding: clamp(24px, 3vw, 42px); }
.page-products .dl-chan--mid { padding: clamp(20px, 2.4vw, 30px); }
.page-products .dl-chan--slim { padding: clamp(16px, 2vw, 22px); }

.page-products .dl-chan__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--frost);
}

.page-products .dl-chan__ver {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 200;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-products .dl-chan--major .dl-chan__ver { font-size: clamp(52px, 6vw, 78px); }
.page-products .dl-chan--mid .dl-chan__ver { font-size: clamp(40px, 4.4vw, 56px); }
.page-products .dl-chan--slim .dl-chan__ver { font-size: clamp(32px, 3.4vw, 44px); }

.page-products .dl-chan__tag {
  display: inline-block;
  margin: 0 0 16px;
}

.page-products .dl-chan__text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--silver);
}

.page-products .dl-chan--slim .dl-chan__text { font-size: 14px; }

.page-products .dl-chan__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-products .dl-chan__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--frost);
}

.page-products .dl-chan__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--moss);
}

@media (min-width: 880px) {
  .page-products .dl-channels__deck {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 0.82fr);
    align-items: start;
    gap: 18px;
  }
}

/* ---------- 设备要求 ---------- */
.page-products .dl-req__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--dl-gap);
}

.page-products .dl-req__table {
  overflow-x: auto;
  background: var(--rock);
  border: 1px solid var(--line);
}

.page-products .dl-table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-products .dl-table__caption {
  caption-side: top;
  padding: 14px 16px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--frost);
  border-bottom: 1px solid var(--line);
}

.page-products .dl-table th,
.page-products .dl-table td {
  padding: 15px 16px;
  text-align: left;
  vertical-align: top;
  line-height: 1.65;
  border-bottom: 1px solid var(--line);
}

.page-products .dl-table thead th {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--frost);
  white-space: nowrap;
}

.page-products .dl-table tbody th {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  color: var(--cyan);
  white-space: nowrap;
}

.page-products .dl-table td { color: var(--silver); }

.page-products .dl-table tbody tr {
  transition: background var(--t);
}

.page-products .dl-table tbody tr:hover {
  background: rgba(47, 227, 206, 0.06);
}

.page-products .dl-table tbody tr:last-child th,
.page-products .dl-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-products .dl-req__figure {
  align-self: start;
}

@media (min-width: 940px) {
  .page-products .dl-req__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 三步安装 ---------- */
.page-products .dl-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.4vw, 24px);
  counter-reset: dlstep;
}

.page-products .dl-step {
  position: relative;
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--rock);
  border: 1px solid var(--line);
  border-top: 1px solid var(--line);
  transition: border-color var(--t);
}

.page-products .dl-step::after {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 36px;
  height: 2px;
  background: var(--signal);
}

.page-products .dl-step:hover {
  border-color: var(--line);
  border-left-color: var(--cyan);
}

.page-products .dl-step__no {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--frost);
}

.page-products .dl-step__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 20px;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-products .dl-step__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--silver);
}

.page-products .dl-step .panel-trigger,
.page-products .dl-archive__panel .panel-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 16px;
  padding: 10px 13px;
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--silver);
  background: rgba(11, 18, 32, 0.55);
  border: 1px solid var(--line);
  border-radius: 3px;
  cursor: pointer;
  transition: border-color var(--t), color var(--t);
}

.page-products .dl-step .panel-trigger:hover,
.page-products .dl-archive__panel .panel-trigger:hover {
  border-color: var(--cyan);
  color: var(--paper);
}

.page-products .dl-step .panel-trigger:focus-visible,
.page-products .dl-archive__panel .panel-trigger:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-products .dl-step .panel,
.page-products .dl-archive__panel .panel {
  margin-top: 12px;
  padding: 14px 16px;
  border-left: 2px solid var(--cyan);
  background: rgba(47, 227, 206, 0.05);
  font-size: 14px;
  line-height: 1.85;
  color: var(--silver);
}

.page-products .dl-step .panel p,
.page-products .dl-archive__panel .panel p {
  margin: 0;
}

.page-products .dl-install__figure {
  margin-top: clamp(28px, 4vw, 46px);
}

@media (min-width: 900px) {
  .page-products .dl-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 旧版说明 ---------- */
.page-products .dl-kept__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--dl-gap);
}

.page-products .dl-kept__figure {
  align-self: center;
}

.page-products .dl-kept__prose {
  margin-top: 16px;
}

.page-products .dl-kept__list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-products .dl-kept__list li {
  padding: 14px 18px;
  border-left: 2px solid var(--moss);
  background: var(--rock);
  font-size: 14px;
  line-height: 1.75;
  color: var(--silver);
}

.page-products .dl-kept__list strong {
  display: block;
  margin-bottom: 5px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.03em;
  color: var(--paper);
}

@media (min-width: 940px) {
  .page-products .dl-kept__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: center;
  }
}

/* ---------- 入口固定 ---------- */
.page-products .dl-pin__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--dl-gap);
}

.page-products .dl-pin__text {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--silver);
  max-width: 34em;
}

.page-products .dl-pin__list {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-products .dl-pin__list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

.page-products .dl-pin__no {
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  margin-top: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  border: 1px solid var(--line);
}

.page-products .dl-pin__note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.8;
  color: var(--frost);
}

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

/* ---------- 归档说明 ---------- */
.page-products .dl-archive__ledger {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .dl-archive__ledger .ledger__row {
  display: grid;
  grid-template-columns: 60px minmax(0, 1fr);
  gap: 6px 18px;
  align-items: baseline;
  padding: 18px 20px;
  background: var(--rock);
  transition: background var(--t);
}

.page-products .dl-archive__ledger .ledger__row:hover {
  background: rgba(47, 227, 206, 0.06);
}

.page-products .dl-archive__ledger .ledger__no {
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-products .dl-archive__ledger .ledger__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--frost);
}

.page-products .dl-archive__ledger .ledger__value {
  grid-column: 1 / -1;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--silver);
}

.page-products .dl-archive__panel {
  margin-top: 18px;
}

@media (min-width: 760px) {
  .page-products .dl-archive__ledger .ledger__row {
    grid-template-columns: 72px 128px minmax(0, 1fr);
  }
  .page-products .dl-archive__ledger .ledger__value {
    grid-column: auto;
  }
}

/* ---------- 页尾引导 ---------- */
.page-products .dl-tail__box {
  position: relative;
  padding: clamp(24px, 3.4vw, 44px);
  background: linear-gradient(140deg, #16202E 0%, #0B1220 72%);
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-products .dl-tail__box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 130px;
  height: 2px;
  background: var(--signal);
}

.page-products .dl-tail__text {
  margin: 14px 0 0;
  max-width: 40em;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--silver);
}

.page-products .dl-tail__links {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .dl-tail__link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px;
  background: var(--rock);
  text-decoration: none;
  transition: background var(--t);
}

.page-products .dl-tail__link:hover {
  background: rgba(47, 227, 206, 0.08);
}

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

.page-products .dl-tail__link-label {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.03em;
  color: var(--paper);
  transition: color var(--t);
}

.page-products .dl-tail__link:hover .dl-tail__link-label {
  color: var(--cyan);
}

.page-products .dl-tail__link-note {
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--frost);
}

@media (min-width: 620px) {
  .page-products .dl-tail__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1020px) {
  .page-products .dl-tail__links {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}