.page-products {
  --pd-version-size: clamp(4.5rem, 12vw, 7rem);
  --pd-btn-min-width: min(320px, 100%);
  background: var(--c-paper);
  color: var(--c-ink);
  font-family: var(--font-body);
  overflow-x: clip;
}
.page-products img {
  max-width: 100%;
  height: auto;
}
.page-products .breadcrumb {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: calc(var(--header-h) + 28px) 24px 0;
  margin-bottom: 0;
  font-size: 0.875rem;
  color: var(--c-muted);
}
.page-products .breadcrumb a {
  color: var(--c-gold);
  text-decoration: none;
}
.page-products .breadcrumb a:hover {
  color: var(--c-action);
}

/* ===== Hero ===== */
.page-products .pd-hero {
  position: relative;
  display: grid;
  gap: 2rem;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2.5rem 24px 3.5rem;
  border-bottom: 1px solid rgba(212, 175, 55, 0.35);
}
.page-products .pd-hero::before {
  content: "";
  position: absolute;
  top: 1rem;
  right: -4rem;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle at center, var(--c-blue), transparent 70%);
  border-radius: 50%;
  z-index: 0;
  pointer-events: none;
}
.page-products .pd-hero-copy {
  position: relative;
  z-index: 1;
}
.page-products .pd-hero-copy .eyebrow {
  color: var(--c-gold);
  margin-bottom: 0.5rem;
}
.page-products .pd-hero h1 {
  margin: 1rem 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.8rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--c-night);
}
.page-products .pd-hero-desc {
  max-width: 60ch;
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--c-muted);
}
.page-products .pd-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}
.page-products .pd-hero-actions .btn {
  padding: 0.9rem 1.6rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
}
.page-products .pd-hero-version {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  min-height: 160px;
  padding: 1.5rem 2rem;
  background: var(--c-night);
  border-radius: var(--radius-lg) var(--radius-lg) var(--radius-lg) 8px;
  box-shadow: var(--shadow-2);
  background-image: linear-gradient(135deg, var(--c-night) 74%, var(--c-gold) 74%);
  overflow: hidden;
}
.page-products .pd-version-number {
  font-family: var(--font-display);
  font-size: var(--pd-version-size);
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: var(--c-gold);
}
.page-products .pd-version-label {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-paper);
  opacity: 0.7;
}

/* ===== 下载区 ===== */
.page-products .pd-download {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3rem 24px 3.5rem;
}
.page-products .pd-download-card {
  display: grid;
  gap: 2rem;
  align-items: center;
  padding: 2rem;
  background: linear-gradient(135deg, var(--c-night) 0%, var(--c-night-2) 55%, var(--c-blue) 100%);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2);
  color: var(--c-paper);
}
.page-products .pd-download-icon {
  display: flex;
  justify-content: center;
}
.page-products .pd-download-icon img {
  width: 140px;
  height: auto;
  border-radius: 24px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}
.page-products .pd-download-main .eyebrow {
  color: var(--c-gold);
  margin-bottom: 0.4rem;
}
.page-products .pd-download-main h2 {
  margin: 0.6rem 0 1rem;
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--c-paper);
}
.page-products .pd-download-meta {
  list-style: none;
  padding: 0;
  margin: 0 0 1.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}
.page-products .pd-download-meta li {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--c-gold-soft);
}
.page-products .pd-download-meta li::before {
  content: "●";
  font-size: 0.5rem;
  color: var(--c-action);
}
.page-products .pd-download-action {
  margin-top: 1.2rem;
}
.page-products .pd-download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--pd-btn-min-width);
  padding: 1rem 2.2rem;
  border: none;
  border-radius: 999px;
  font-weight: 800;
  font-size: 1rem;
  color: var(--c-night);
  background: linear-gradient(120deg, var(--c-gold), var(--c-action));
  box-shadow: 0 10px 24px rgba(212, 175, 55, 0.3);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}
.page-products .pd-download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(255, 107, 53, 0.35);
}
.page-products .pd-progress {
  height: 5px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.15);
  margin-top: 0.8rem;
  overflow: hidden;
}
.page-products .pd-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--c-gold), var(--c-action));
  border-radius: inherit;
  transition: width 1.8s ease;
}
.page-products .pd-download-action:focus-within .pd-progress span {
  width: 100%;
}
.page-products .pd-download-state {
  margin-top: 0.4rem;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.6);
}
.page-products .pd-download-note {
  margin-top: 1rem;
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
}
.page-products .pd-download-note a {
  color: var(--c-gold);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.page-products .pd-qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  padding: 1.2rem;
  background: var(--c-paper);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}
.page-products .pd-qr svg {
  display: block;
  width: 120px;
  height: 120px;
}
.page-products .pd-qr-text {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--c-ink);
}

/* ===== 账户设置正式版本 ===== */
.page-products .pd-account {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px 3.5rem;
}
.page-products .pd-account-grid {
  display: grid;
  gap: 2rem;
  align-items: start;
}
.page-products .pd-account-note {
  display: flex;
  gap: 1rem;
  align-items: center;
  padding: 1.2rem;
  background: var(--c-night-2);
  border-radius: var(--radius-md);
  color: var(--c-paper);
}
.page-products .pd-note-vertical {
  writing-mode: horizontal-tb;
  font-family: var(--font-note);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: var(--c-gold);
  white-space: nowrap;
  flex: 0 0 auto;
}
.page-products .pd-account-note p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.8);
}
.page-products .pd-account-main .eyebrow {
  color: var(--c-gold);
  margin-bottom: 0.4rem;
}
.page-products .pd-account-main h2 {
  margin: 0.6rem 0 1rem;
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--c-night);
}
.page-products .pd-account-main > p {
  line-height: 1.8;
  color: var(--c-muted);
}
.page-products .pd-steps {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
}
.page-products .pd-steps li {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 0.9rem 0;
  border-bottom: 1px solid rgba(11, 29, 58, 0.08);
  line-height: 1.6;
  font-size: 0.95rem;
}
.page-products .pd-step-num {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  background: var(--c-night);
  color: var(--c-gold);
  font-family: var(--font-display);
  font-size: 0.9rem;
}
.page-products .pd-account-main .btn {
  border-radius: 999px;
  padding: 0.8rem 1.4rem;
  text-decoration: none;
  font-weight: 700;
}
.page-products .pd-phone {
  display: flex;
  justify-content: center;
}
.page-products .pd-phone-frame {
  position: relative;
  max-width: 260px;
  border-radius: 36px;
  border: 8px solid var(--c-ink);
  background: var(--c-ink);
  padding: 6px;
  box-shadow: var(--shadow-2);
}
.page-products .pd-phone-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 28px;
}
.page-products .pd-bubble {
  position: absolute;
  z-index: 2;
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--c-ink);
  background: var(--c-gold);
  border-radius: 999px;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--transition), transform var(--transition);
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  pointer-events: none;
}
.page-products .pd-phone-frame:hover .pd-bubble,
.page-products .pd-phone-frame:focus-within .pd-bubble {
  opacity: 1;
  transform: translateY(0);
}
.page-products .pd-bubble-1 {
  top: 14%;
  left: -28px;
}
.page-products .pd-bubble-2 {
  bottom: 32%;
  right: -38px;
}
.page-products .pd-bubble-3 {
  top: 48%;
  right: -52px;
}

/* ===== 功能特性概览 ===== */
.page-products .pd-features {
  max-width: none;
  padding: 3.5rem 24px;
  background: linear-gradient(135deg, var(--c-night) 0%, var(--c-night-2) 70%, var(--c-blue) 100%);
  color: var(--c-paper);
}
.page-products .pd-features-head {
  max-width: var(--max-w);
  margin: 0 auto 2rem;
}
.page-products .pd-features-head .eyebrow {
  color: var(--c-gold);
  margin-bottom: 0.4rem;
}
.page-products .pd-features-head h2 {
  margin: 0.6rem 0 0.8rem;
  font-family: var(--font-display);
  font-size: 2.4rem;
  color: var(--c-paper);
}
.page-products .pd-features-head > p:last-child {
  max-width: 55ch;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
}
.page-products .pd-features-grid {
  display: grid;
  gap: 1.2rem;
  max-width: var(--max-w);
  margin: 0 auto 2rem;
}
.page-products .pd-feature-card {
  position: relative;
  padding: 1.6rem;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.page-products .pd-feature-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 90px;
  height: 100%;
  background: repeating-linear-gradient(135deg, transparent, transparent 8px, rgba(255, 255, 255, 0.05) 8px, rgba(255, 255, 255, 0.05) 10px);
  pointer-events: none;
}
.page-products .pd-feature-num {
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  color: var(--c-gold);
}
.page-products .pd-feature-card h3 {
  margin: 0.6rem 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--c-paper);
}
.page-products .pd-feature-card p {
  margin: 0;
  line-height: 1.7;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.75);
}
.page-products .pd-features-chart,
.page-products .pd-features-modules {
  max-width: var(--max-w);
  margin: 0 auto 1.5rem;
}
.page-products .pd-features-chart img,
.page-products .pd-features-modules img {
  display: block;
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-2);
}
.page-products .pd-features-modules {
  margin-top: 1.5rem;
}

/* ===== 版本迭代记录 ===== */
.page-products .pd-versions {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3.5rem 24px;
}
.page-products .pd-versions-head .eyebrow {
  color: var(--c-gold);
  margin-bottom: 0.4rem;
}
.page-products .pd-versions-head h2 {
  margin: 0.6rem 0 2rem;
  font-family: var(--font-display);
  font-size: 2.4rem;
  color: var(--c-night);
}
.page-products .pd-versions-layout {
  display: grid;
  gap: 2rem;
  align-items: start;
}
.page-products .pd-versions-graphic img {
  display: block;
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-1);
}
.page-products .pd-version-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.page-products .pd-version-item {
  border: 1px solid rgba(11, 29, 58, 0.1);
  border-radius: var(--radius-md);
  background: var(--c-paper);
  overflow: hidden;
}
.page-products .pd-version-head {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem 1.2rem;
  flex-wrap: wrap;
}
.page-products .pd-version-meta {
  font-size: 0.85rem;
  color: var(--c-muted);
}
.page-products .pd-version-item details summary {
  cursor: pointer;
  list-style: none;
  padding: 0.8rem 1.2rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--c-ink);
  border-top: 1px dashed rgba(11, 29, 58, 0.15);
  position: relative;
  transition: color var(--transition);
}
.page-products .pd-version-item details summary::-webkit-details-marker {
  display: none;
}
.page-products .pd-version-item details summary::before {
  content: "+";
  margin-right: 0.5rem;
  color: var(--c-gold);
  font-weight: 700;
}
.page-products .pd-version-item details[open] summary::before {
  content: "–";
}
.page-products .pd-version-item details ul {
  margin: 0;
  padding: 0 1.2rem 1.2rem 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.page-products .pd-version-item details li {
  line-height: 1.6;
  font-size: 0.92rem;
  color: var(--c-muted);
}
.page-products .pd-versions-more {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--c-muted);
  line-height: 1.7;
}
.page-products .pd-versions-more a {
  color: var(--c-gold);
  text-decoration: underline;
  text-underline-offset: 2px;
}

@media (min-width: 900px) {
  /* Hero 左右非对称 */
  .page-products .pd-hero {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
    padding: 4rem 24px 4.5rem;
  }
  .page-products .pd-hero::before {
    width: 320px;
    height: 320px;
    right: -2rem;
  }
  .page-products .pd-hero-version {
    min-height: 280px;
    padding: 3rem;
  }

  /* 下载区三栏：图标 / 信息 / 二维码 */
  .page-products .pd-download-card {
    grid-template-columns: 160px 1fr auto;
    padding: 2.5rem 3rem;
  }

  /* 账户设置区：窄注释 / 主内容 / 手机 */
  .page-products .pd-account-grid {
    grid-template-columns: 0.8fr 1.6fr 1fr;
    align-items: center;
    gap: 2.5rem;
  }
  .page-products .pd-account-note {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    min-height: 260px;
  }
  .page-products .pd-note-vertical {
    writing-mode: vertical-rl;
    font-size: 0.8rem;
  }
  .page-products .pd-phone-frame {
    max-width: 280px;
  }

  /* 功能特性：第一行三块等宽，第二行 1+2 宽窄对比 */
  .page-products .pd-features {
    padding: 4.5rem 24px;
  }
  .page-products .pd-features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-products .pd-feature-card:nth-child(4) {
    grid-column: span 1;
  }
  .page-products .pd-feature-card:nth-child(5) {
    grid-column: span 2;
  }
  .page-products .pd-features-chart img,
  .page-products .pd-features-modules img {
    width: 100%;
  }

  /* 版本记录：左图右列表，左侧吸顶 */
  .page-products .pd-versions {
    padding: 4.5rem 24px;
  }
  .page-products .pd-versions-layout {
    grid-template-columns: 0.9fr 1.4fr;
    gap: 3rem;
    align-items: start;
  }
  .page-products .pd-versions-graphic {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
}