/* ===== 产品与下载页 · 页面专属样式 ===== */

.page-products {
  background: var(--bg-deep);
  color: var(--text-body);
}

.page-products section[id],
.page-products main[id] {
  scroll-margin-top: 1.5rem;
}

/* ---------- 面包屑 ---------- */
.page-products .breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  padding-top: 1rem;
}

.page-products .breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}

.page-products .breadcrumb a:hover {
  color: var(--accent-light);
}

/* ---------- 首屏封面 ---------- */
.page-products .pd-hero {
  position: relative;
  overflow: hidden;
  padding-top: 1.5rem;
  padding-bottom: 3.5rem;
}

.page-products .pd-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 220px;
  height: 220px;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  transform: translate(35%, -35%);
  opacity: 0.4;
  pointer-events: none;
}

.page-products .pd-hero::after {
  content: "";
  position: absolute;
  right: 14%;
  bottom: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(var(--accent), transparent);
  opacity: 0.25;
  pointer-events: none;
}

.page-products .pd-hero-grid {
  display: grid;
  gap: 2rem;
}

.page-products .pd-hero-main {
  border-left: 5px solid var(--accent);
  padding-left: 1.25rem;
}

.page-products .pd-hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  padding: 0.5rem 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.page-products .pd-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4.2vw, 3.25rem);
  line-height: 1.12;
  color: var(--text-heading);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 1rem 0;
}

.page-products .pd-hero-lead {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-body);
  max-width: 40em;
  margin: 0;
}

.page-products .pd-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.page-products .tag {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  color: var(--text-body);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.4rem 0.75rem;
}

/* ---------- 首屏侧栏索引/规格 ---------- */
.page-products .pd-hero-side {
  display: grid;
  gap: 1rem;
}

.page-products .pd-side-title {
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0;
}

.page-products .pd-hero-index {
  background: var(--bg-panel);
  border: 3px solid var(--border-color);
  box-shadow: var(--shadow);
  padding: 1.25rem 1.5rem;
}

.page-products .pd-hero-index ul {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
}

.page-products .pd-hero-index li + li {
  border-top: 1px solid var(--border-color);
}

.page-products .pd-hero-index a {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.625rem 0;
  color: var(--text-body);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.page-products .pd-hero-index a:hover {
  color: var(--accent-light);
}

.page-products .pd-index-no {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.8125rem;
  font-weight: 400;
}

.page-products .pd-hero-spec {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  padding: 1.25rem 1.5rem;
}

.page-products .pd-spec-list {
  margin: 0.85rem 0 0;
}

.page-products .pd-spec-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid rgba(42, 53, 71, 0.7);
  padding: 0.45rem 0;
  font-size: 0.875rem;
}

.page-products .pd-spec-row:last-child {
  border-bottom: none;
}

.page-products .pd-spec-row dt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.page-products .pd-spec-row dd {
  margin: 0;
  color: var(--text-heading);
  font-weight: 600;
}

/* ---------- 章节骨架 ---------- */
.page-products .pd-section {
  padding-block: 3.5rem 3rem;
}

.page-products .section-band {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  border-top: 2px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  background: linear-gradient(90deg, rgba(255, 107, 0, 0.08), transparent 45%);
  padding-block: 0.85rem;
  margin-bottom: 2.25rem;
}

.page-products .section-no {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  flex-shrink: 0;
}

.page-products .section-head {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.page-products .section-lead {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0;
}

.page-products .section-head h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  line-height: 1.15;
  color: var(--text-heading);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0;
}

.page-products .pd-section-intro {
  max-width: 46em;
  margin: 0 0 1.75rem;
  font-size: 1rem;
  line-height: 1.7;
}

.page-products .pd-section-alt {
  background:
    radial-gradient(1200px 400px at 100% 0%, rgba(0, 229, 255, 0.06), transparent 60%),
    var(--bg-panel);
  border-block: 1px solid var(--border-color);
}

/* ---------- 通用图框 ---------- */
.page-products figure {
  margin: 0;
}

.page-products figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow);
  filter: saturate(1.12) contrast(1.06);
}

.page-products figcaption {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  padding-top: 0.75rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
}

/* ---------- 01 安装入口 ---------- */
.page-products .pd-install-layout {
  display: grid;
  gap: 2rem;
}

.page-products .pd-install-cards {
  display: grid;
  gap: 1.5rem;
}

.page-products .pd-install-card {
  background: var(--bg-panel);
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  min-width: 0;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.page-products .pd-install-card:hover {
  border-color: var(--accent);
}

.page-products .pd-card-serial {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--accent-blue);
  text-transform: uppercase;
  margin: 0 0 0.75rem;
}

.page-products .pd-install-card h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--text-heading);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 1rem;
}

.page-products .pd-install-list {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
}

.page-products .pd-install-list li {
  border-bottom: 1px solid rgba(42, 53, 71, 0.7);
  color: var(--text-body);
  font-size: 0.875rem;
  padding: 0.55rem 0;
}

.page-products .pd-install-list li::before {
  content: "·";
  color: var(--accent);
  font-weight: 700;
  margin-right: 0.5rem;
}

.page-products .pd-install-card .btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-products .pd-install-figure {
  align-self: end;
}

/* ---------- 02 核心功能矩阵 ---------- */
.page-products .pd-features-layout {
  display: grid;
  gap: 2rem;
}

.page-products .pd-features-notes {
  background: var(--bg-deep);
  border-left: 5px solid var(--accent);
  padding: 1.5rem;
}

.page-products .pd-features-notes .lead-text {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--text-heading);
  margin: 0 0 0.85rem;
}

.page-products .pd-features-notes .text-muted {
  margin: 0;
}

.page-products .pd-stats-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.5rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1.25rem;
  margin-top: 1.5rem;
}

.page-products .pd-stat-block {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.page-products .pd-stat-block .stat-number {
  font-family: var(--font-heading);
  font-size: 2.75rem;
  line-height: 1;
  color: var(--accent);
}

.page-products .pd-stat-block .stat-unit {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.page-products .pd-feature-table-wrap {
  background: var(--bg-deep);
  border: 3px solid var(--border-color);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.page-products .pd-feature-row {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  transition: background var(--transition-fast);
}

.page-products .pd-feature-row + .pd-feature-row {
  border-top: 1px solid var(--border-color);
}

.page-products .pd-feature-row:hover,
.page-products .pd-feature-row:focus-within {
  background: var(--bg-panel);
}

.page-products .pd-feature-row > span {
  padding: 0.85rem 0.65rem;
  font-size: 0.75rem;
  line-height: 1.4;
  border-right: 1px solid rgba(42, 53, 71, 0.6);
}

.page-products .pd-feature-row > span:last-child {
  border-right: none;
}

.page-products .pd-feature-row-head {
  background: linear-gradient(135deg, rgba(255, 107, 0, 0.2), rgba(255, 61, 0, 0.06)), var(--bg-panel);
}

.page-products .pd-feature-row-head > span {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-heading);
  font-weight: 700;
}

.page-products .pd-feature-row:not(.pd-feature-row-head) > span:first-child {
  font-weight: 700;
  color: var(--text-heading);
}

.page-products .pd-features-figure {
  margin-top: 2rem;
}

/* ---------- 03 收藏适配清单 ---------- */
.page-products .pd-fav-layout {
  display: grid;
  gap: 2rem;
}

.page-products .pd-fav-copy .pd-fav-intro {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--text-heading);
  margin: 0 0 0.75rem;
}

.page-products .pd-fav-list {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0;
}

.page-products .pd-fav-list li {
  border-left: 2px solid var(--accent);
  padding: 0.5rem 0 0.5rem 0.85rem;
  font-size: 0.9rem;
}

.page-products .pd-fav-list li + li {
  margin-top: 0.35rem;
}

.page-products .pd-fav-data {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.page-products .pd-data-point {
  border: 1px solid var(--border-color);
  background: var(--bg-panel);
  padding: 0.85rem 0.5rem;
  text-align: center;
}

.page-products .pd-data-big {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--accent);
  line-height: 1.2;
}

.page-products .pd-data-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ---------- 04 安卓测试版订阅流程 ---------- */
.page-products .pd-beta-layout {
  display: grid;
  gap: 2rem;
}

.page-products .pd-beta-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .pd-step-item {
  display: flex;
  gap: 1.25rem;
  align-items: stretch;
  border: 2px solid var(--border-color);
  background: var(--bg-panel);
  box-shadow: var(--shadow);
  padding: 1.25rem;
}

.page-products .pd-step-item + .pd-step-item {
  margin-top: 1rem;
}

.page-products .pd-step-no {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  line-height: 1;
  color: var(--accent);
  flex-shrink: 0;
  min-width: 2rem;
}

.page-products .pd-step-details {
  flex: 1;
}

.page-products .pd-step-details summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
  list-style: none;
}

.page-products .pd-step-details summary::-webkit-details-marker {
  display: none;
}

.page-products .pd-step-details summary::after {
  content: "+";
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 700;
  line-height: 1;
}

.page-products .pd-step-details[open] summary::after {
  content: "−";
}

.page-products .pd-step-details summary h3 {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  color: var(--text-heading);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0;
  transition: color var(--transition-fast);
}

.page-products .pd-step-details summary:hover h3 {
  color: var(--accent-light);
}

.page-products .pd-step-details p {
  margin: 0.625rem 0 0;
  font-size: 0.875rem;
  line-height: 1.6;
  padding-left: 1rem;
  border-left: 2px solid var(--accent);
}

.page-products .pd-beta-note {
  margin-top: 1.5rem;
  font-size: 0.875rem;
}

.page-products .pd-beta-note a {
  color: var(--accent-blue);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

/* ---------- 05 海南专属下载通道 ---------- */
.page-products .pd-hainan {
  background:
    radial-gradient(500px 300px at 10% 80%, rgba(255, 107, 0, 0.12), transparent 70%),
    var(--bg-deep);
}

.page-products .pd-hn-layout {
  display: grid;
  gap: 2rem;
}

.page-products .pd-hn-copy {
  background: linear-gradient(135deg, rgba(255, 107, 0, 0.14), transparent 60%), var(--bg-panel);
  border: 3px solid var(--border-color);
  padding: 1.75rem;
}

.page-products .pd-hn-intro {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--text-heading);
  font-weight: 700;
  margin: 0 0 0.75rem;
}

.page-products .pd-hn-copy > p:not(.pd-hn-intro) {
  margin: 0;
  font-size: 0.95rem;
}

.page-products .pd-hn-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.page-products .pd-hn-stat {
  background: var(--bg-deep);
  border: 1px solid var(--border-color);
  padding: 0.85rem 0.5rem;
  text-align: center;
}

.page-products .pd-hn-big {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--accent);
  line-height: 1.2;
}

.page-products .pd-hn-label {
  display: block;
  font-size: 0.6875rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 0.25rem;
}

/* ---------- 信任带 ---------- */
.page-products .pd-trust-band {
  border-block: 1px solid var(--border-color);
  background: var(--bg-panel);
  padding-block: 1.25rem;
}

.page-products .pd-trust-band p {
  display: flex;
  gap: 0.5rem;
  align-items: baseline;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0;
}

.page-products .pd-trust-mark {
  color: var(--accent);
  font-family: var(--font-mono);
}

/* ---------- 更多资源 ---------- */
.page-products .pd-resources {
  padding-block: 3.5rem 4rem;
}

.page-products .pd-resources-head {
  margin-bottom: 1.75rem;
}

.page-products .pd-resources-head .mono-label {
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.page-products .pd-resources-head h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--text-heading);
  text-transform: uppercase;
  margin: 0.5rem 0 0;
}

.page-products .pd-resources-grid {
  display: grid;
  gap: 1rem;
}

.page-products .pd-resource-card {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  border: 2px solid var(--border-color);
  background: var(--bg-panel);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  color: var(--text-body);
  text-decoration: none;
  transition: transform var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.page-products .pd-resource-card:hover,
.page-products .pd-resource-card:focus-visible {
  border-color: var(--accent);
  background: var(--bg-deep);
  transform: translateY(-2px);
}

.page-products .pd-resource-no {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.875rem;
  line-height: 1;
}

.page-products .pd-resource-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 0.75rem;
}

.page-products .pd-resource-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--text-heading);
  line-height: 1.4;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

/* ---------- 桌面与平板断点 ---------- */
@media (min-width: 768px) {
  .page-products .pd-hero {
    padding-top: 2.5rem;
    padding-bottom: 4.5rem;
  }

  .page-products .pd-hero-grid {
    grid-template-columns: 1.5fr 1fr;
    gap: 3rem;
    align-items: start;
  }

  .page-products .pd-install-layout {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: start;
  }

  .page-products .pd-install-cards {
    grid-template-columns: 1fr 1fr;
    gap: 1.75rem;
  }

  .page-products [data-tilt="left"] {
    transform: rotate(-1.2deg);
  }

  .page-products [data-tilt="right"] {
    transform: rotate(1.2deg);
  }

  .page-products .pd-install-card:hover {
    transform: rotate(0deg);
  }

  .page-products .pd-install-figure {
    align-self: end;
  }

  .page-products .pd-features-layout {
    grid-template-columns: 1fr 1.35fr;
    gap: 2.5rem;
    align-items: start;
  }

  .page-products .pd-fav-layout {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: center;
  }

  .page-products .pd-beta-layout {
    grid-template-columns: 1.25fr 0.75fr;
    gap: 2.5rem;
    align-items: start;
  }

  .page-products .pd-step-a {
    transform: translateX(-0.75rem);
  }

  .page-products .pd-step-b {
    transform: translateX(0.75rem);
  }

  .page-products .pd-step-c {
    transform: translateX(-0.5rem);
  }

  .page-products .pd-step-d {
    transform: translateX(0.5rem);
  }

  .page-products .pd-beta-figure {
    position: sticky;
    top: 8rem;
  }

  .page-products .pd-hn-layout {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: center;
  }

  .page-products .pd-resources-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-products .pd-section {
    padding-block: 4.5rem 4rem;
  }

  .page-products .pd-install-layout {
    grid-template-columns: 1.4fr 1fr;
  }

  .page-products .pd-feature-row > span {
    font-size: 0.875rem;
    padding: 0.95rem 1rem;
  }

  .page-products .pd-resources-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}