/* ==========================================================
   应用下载页 /app-download/ —— 页面专属样式
   作用域：.page-products
   ========================================================== */

.page-products {
  --accent: var(--cyan);
  padding-bottom: 96px;
  overflow-x: hidden;
}

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

/* ---------- 面包屑 ---------- */
.page-products .breadcrumb {
  padding: 22px 0 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-products .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-products .breadcrumb a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 首屏：下载控制台 ---------- */
.page-products .dl-console {
  position: relative;
  padding-top: 30px;
}

.page-products .dl-console::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: -60%;
  width: 42%;
  pointer-events: none;
  background: linear-gradient(100deg, transparent, rgba(43, 227, 210, 0.055), transparent);
  animation: ry-sweep 8s linear infinite;
}

@keyframes ry-sweep {
  0%   { left: -60%; opacity: 0; }
  12%  { opacity: 1; }
  88%  { opacity: 1; }
  100% { left: 118%; opacity: 0; }
}

.page-products .dl-hero {
  align-items: start;
  row-gap: 36px;
}

.page-products .dl-hero__text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
}

.page-products .dl-title {
  margin: 0;
  max-width: 20ch;
  font-size: clamp(27px, 4.6vw, 50px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-products .dl-lead {
  margin: 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.page-products .dl-hint {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--goldline);
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* 设备切换（直角细线框） */
.page-products .dl-switch {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 6px;
  border: 1px solid var(--line-strong);
  background: rgba(13, 21, 36, 0.72);
  align-self: flex-start;
  max-width: 100%;
}

.page-products .dl-switch .filter-btn {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.08em;
  padding: 9px 18px;
  border-radius: 0;
  cursor: pointer;
  transition: color 160ms var(--ease), background 160ms var(--ease), border-color 160ms var(--ease);
}

.page-products .dl-switch .filter-btn:hover {
  color: var(--text);
  border-color: var(--line-strong);
}

.page-products .dl-switch .filter-btn:active {
  background: rgba(43, 227, 210, 0.12);
  color: var(--text);
}

.page-products .dl-switch .filter-btn[aria-pressed="true"],
.page-products .dl-switch .filter-btn.is-active {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--on-accent);
}

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

/* 首屏主视觉 */
.page-products .dl-hero__figure .figure {
  margin: 0;
  border: 1px solid var(--line-strong);
  border-top: 3px solid var(--cyan);
  background: var(--panel-2);
  box-shadow: var(--shadow-panel);
}

/* ---------- 版本卡 ---------- */
.page-products .dl-versions {
  margin-top: 46px;
  row-gap: 28px;
}

.page-products .device-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-products .device-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.page-products .device-card__title {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-products .device-card__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink);
}

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

.page-products .spec-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-products .spec-row dt {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-products .spec-row dd {
  margin: 0;
  font-size: 14px;
  color: var(--text);
  text-align: right;
  word-break: break-all;
}

.page-products .device-card .copy-btn {
  align-self: flex-start;
}

/* ---------- 通用小节标题 ---------- */
.page-products .sec-head {
  max-width: 62ch;
  margin-bottom: 32px;
}

.page-products .sec-head h2 {
  margin: 12px 0 14px;
  font-size: clamp(23px, 3.4vw, 38px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-products .sec-head .prose {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 安装前三件事 ---------- */
.page-products .prepare__grid {
  row-gap: 24px;
}

.page-products .prepare__item {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-products .prepare__item h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--text);
}

.page-products .prepare__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-products .prepare__item a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 227, 210, 0.45);
}

.page-products .prepare__item .copy-btn {
  align-self: flex-start;
  margin-top: 4px;
}

/* ---------- 十二个分区入口 ---------- */
.page-products .zones h2 {
  margin: 12px 0 0;
  font-size: clamp(23px, 3.4vw, 38px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-products .zones__copy {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 18px;
}

.page-products .zones__copy .prose {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-products .zones__copy a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 227, 210, 0.45);
}

.page-products .zone-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  background: var(--line);
  border: 1px solid var(--line-strong);
}

.page-products .zone-cell {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px 12px 16px;
  background: var(--panel-2);
  border-top: 3px solid var(--accent, var(--cyan));
}

.page-products .zone-cell__num {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-products .zone-cell__name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}

.page-products .zone-cell__name::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 8px;
  background: var(--accent, var(--cyan));
  transform: rotate(45deg);
  vertical-align: middle;
}

/* ---------- 限额 ---------- */
.page-products .limit-figure {
  margin: 36px 0 0;
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--coral);
  background: var(--ink);
}

.page-products .limit-axis {
  margin-top: 46px;
}

.page-products .limit-axis__stops {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: space-between;
  gap: 6px;
}

.page-products .limit-axis__stops::before {
  content: "";
  position: absolute;
  top: 6px;
  left: 8px;
  right: 8px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--gold) 62%, var(--coral) 100%);
  opacity: 0.6;
}

.page-products .limit-stop {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  min-width: 0;
  text-align: center;
}

.page-products .limit-stop::before {
  content: "";
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
  box-sizing: border-box;
}

.page-products .limit-stop--max::before {
  border-color: var(--coral);
}

.page-products .limit-stop__val {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-products .limit-stop--max .limit-stop__val {
  color: var(--coral);
}

.page-products .limit-stop__unit {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-products .tier-list {
  list-style: none;
  margin: 42px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-strong);
}

.page-products .tier {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-products .tier__range {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--gold);
}

.page-products .tier--max .tier__range {
  color: var(--coral);
}

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

.page-products .limit-foot {
  margin: 22px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 登录与设备 ---------- */
.page-products .access__top {
  row-gap: 28px;
  align-items: start;
}

.page-products .access h2 {
  margin: 12px 0 14px;
  font-size: clamp(23px, 3.4vw, 38px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-products .access .prose {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

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

.page-products .feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  background: var(--panel-2);
  font-size: 15px;
  line-height: 1.72;
  color: var(--text);
}

.page-products .feature-list li::before {
  content: "";
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  margin-top: 9px;
  background: var(--cyan);
  transform: rotate(45deg);
}

/* ---------- 更新节奏 ---------- */
.page-products .update-panel {
  margin-top: 46px;
  padding: 28px 22px;
  border: 1px solid var(--line-strong);
  border-top: 3px solid var(--gold);
  background: linear-gradient(160deg, rgba(16, 26, 43, 0.92), rgba(13, 21, 36, 0.96));
  box-shadow: var(--shadow-panel);
}

.page-products .update-panel__inner {
  align-items: start;
  row-gap: 28px;
}

.page-products .update-panel__figure {
  margin: 0;
}

.page-products .update-panel__figure .figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink);
}

.page-products .update-panel__title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 900;
  line-height: 1.26;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-products .update-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
  background: var(--line);
}

.page-products .update-item {
  padding: 18px 16px 18px 20px;
  background: rgba(10, 13, 19, 0.6);
  border-left: 3px solid var(--accent, var(--gold));
}

.page-products .update-item__cycle {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--accent, var(--gold));
}

.page-products .update-item__title {
  margin: 8px 0 0;
  font-size: 17px;
  font-weight: 800;
  color: var(--text);
}

.page-products .update-item__text {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-products .update-item__text a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 227, 210, 0.45);
}

/* ---------- 安装求助 ---------- */
.page-products .support h2 {
  margin: 12px 0 0;
  font-size: clamp(23px, 3.4vw, 38px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-products .faq-list {
  margin-top: 28px;
  border-top: 1px solid var(--line-strong);
}

.page-products .faq-list .disclosure {
  border-bottom: 1px solid var(--line);
}

.page-products .faq-list summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 17px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
}

.page-products .faq-list summary::-webkit-details-marker {
  display: none;
}

.page-products .faq-list summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
}

.page-products .faq-list details[open] > summary::after {
  content: "−";
}

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

.page-products .faq-list .disclosure__body {
  padding: 0 0 18px;
  max-width: 66ch;
}

.page-products .faq-list .disclosure__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .support-more {
  margin: 22px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-products .support-more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 227, 210, 0.45);
}

.page-products .support-note {
  padding: 24px 0 24px 22px;
  border-left: 3px solid var(--cyan);
  background: linear-gradient(90deg, rgba(43, 227, 210, 0.07), transparent 72%);
}

.page-products .support-note p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .support-note p + p {
  margin-top: 12px;
}

.page-products .support-note .note__title {
  font-size: 18px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--text);
}

.page-products .support-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 227, 210, 0.45);
}

.page-products .support-note p.support-note__meta {
  font-size: 12.5px;
  letter-spacing: 0.08em;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-products .tier {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }

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

@media (min-width: 1000px) {
  .page-products .dl-hero__text {
    padding-right: 8px;
  }

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

  .page-products .update-panel {
    padding: 34px 30px;
  }
}

@media (max-width: 760px) {
  .page-products .grid-12 {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-products .grid-12 > [class*="span-"] {
    grid-column: 1 / -1;
    min-width: 0;
  }

  .page-products .dl-title {
    max-width: none;
  }

  .page-products .limit-stop__val {
    font-size: 12px;
  }

  .page-products .limit-stop__unit {
    font-size: 10px;
    letter-spacing: 0.08em;
  }

  .page-products .limit-axis__stops {
    gap: 2px;
  }

  .page-products .support-note {
    padding: 20px 0 20px 16px;
  }

  .page-products .update-panel {
    padding: 22px 16px;
  }
}

@media (max-width: 420px) {
  .page-products .spec-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .page-products .spec-row dd {
    text-align: left;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-products .dl-console::after {
    display: none;
  }

  .page-products .dl-switch .filter-btn,
  .page-products .breadcrumb a {
    transition: none;
  }
}