.page-products {
  --pp-pad-y: 56px;
  --pp-pad-x: 20px;
  --pp-border: 3px solid var(--gold);
  background: var(--off-white);
  color: var(--dark-text);
  overflow-x: hidden;
}

.page-products section[id] {
  scroll-margin-top: 80px;
}

/* ===== 首屏 ===== */
.page-products .pp-hero {
  position: relative;
  background: var(--gradient-primary);
  color: var(--white);
  padding: 28px var(--pp-pad-x) 44px;
  border-bottom: 3px solid var(--gold);
  isolation: isolate;
}

.page-products .pp-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--red) 0%, var(--gold) 100%);
  z-index: 2;
}

.page-products .pp-hero-bg-img {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.page-products .pp-hero-bg-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
}

.page-products .pp-hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin: 0 auto;
}

.page-products .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  margin-bottom: 18px;
  color: rgba(255,255,255,0.7);
}

.page-products .breadcrumb a {
  color: rgba(255,255,255,0.88);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 300ms var(--ease), color 300ms var(--ease);
}

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

.page-products .pp-hero h1 {
  margin: 14px 0 14px;
  font-size: clamp(30px, 7.5vw, 52px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.page-products .pp-hero-sub {
  max-width: 640px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255,255,255,0.88);
  margin-bottom: 20px;
}

.page-products .pp-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 0;
}

/* ===== 首屏目录 ===== */
.page-products .pp-hero-toc-wrap {
  background: var(--off-white);
  padding: 20px var(--pp-pad-x) 0;
}

.page-products .pp-hero-toc {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-products .pp-hero-toc .toc-card {
  display: block;
  background: var(--gradient-primary);
  border: 2px solid var(--gold);
  box-shadow: var(--shadow-soft);
  padding: 12px 12px 14px;
  color: var(--white);
  text-decoration: none;
  transition: background 300ms var(--ease), border-color 300ms var(--ease), transform 300ms var(--ease), box-shadow 300ms var(--ease);
}

.page-products .pp-hero-toc .toc-card:hover {
  background: linear-gradient(135deg, #14213D 0%, #1D3A5F 100%);
  border-color: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 6px 6px 0 rgba(10,31,68,0.35);
}

.page-products .pp-hero-toc .toc-card-num,
.page-products .pp-hero-toc .toc-card-name,
.page-products .pp-hero-toc .toc-card-desc {
  display: block;
}

.page-products .pp-hero-toc .toc-card-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold-light);
  margin-bottom: 4px;
}

.page-products .pp-hero-toc .toc-card-name {
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 4px;
}

.page-products .pp-hero-toc .toc-card-desc {
  font-size: 12px;
  color: rgba(255,255,255,0.72);
  line-height: 1.5;
}

/* ===== 公共区块 ===== */
.page-products .section-panel {
  padding: var(--pp-pad-y) var(--pp-pad-x);
}

.page-products .container {
  max-width: var(--container);
  margin: 0 auto;
}

/* ===== 下载方式 ===== */
.page-products .pp-download {
  background: var(--off-white);
}

.page-products .pp-download-grid {
  display: grid;
  gap: 22px;
  margin-top: 28px;
}

.page-products .pp-download-card {
  position: relative;
  background: var(--white);
  border: var(--pp-border);
  box-shadow: var(--shadow-brutal);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform 300ms var(--ease), box-shadow 300ms var(--ease);
}

.page-products .pp-download-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 10px 10px 0 rgba(10,31,68,0.9);
}

.page-products .pp-download-platform {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-products .pp-download-platform h3 {
  margin: 0;
  font-size: 20px;
  color: var(--deep-blue);
}

.page-products .pp-download-platform .pp-ico {
  width: 32px;
  height: 32px;
  color: var(--gold);
}

.page-products .pp-download-version {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--red);
  line-height: 1;
}

.page-products .pp-download-specs {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 6px;
  font-size: 14px;
  line-height: 1.6;
}

.page-products .pp-download-specs li {
  position: relative;
  padding-left: 18px;
}

.page-products .pp-download-specs li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  background: var(--gold);
  transform: rotate(45deg);
}

.page-products .pp-download-note {
  font-size: 13px;
  color: var(--muted-text);
  line-height: 1.65;
  margin: 0;
}

.page-products .pp-download-visual {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
}

.page-products .pp-download-visual .image-frame {
  background: var(--deep-blue);
  box-shadow: var(--shadow-soft);
}

.page-products .pp-img-caption {
  font-size: 13px;
  color: var(--muted-text);
  line-height: 1.5;
  text-align: center;
}

/* ===== 功能亮点 ===== */
.page-products .pp-features {
  background: var(--gradient-primary);
  color: var(--white);
}

.page-products .pp-features .section-sub {
  color: rgba(255,255,255,0.74);
}

.page-products .pp-features-grid {
  display: grid;
  gap: 28px;
  margin-top: 30px;
}

.page-products .pp-features-media {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
}

.page-products .pp-phone-frame {
  max-width: 280px;
  width: 100%;
  border: 3px solid var(--gold);
  box-shadow: var(--shadow-brutal);
  background: rgba(255,255,255,0.04);
}

.page-products .pp-phone-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-products .pp-features-list {
  display: grid;
  gap: 0;
}

.page-products .pp-feature-item {
  display: grid;
  grid-template-columns: 44px 1fr 30px;
  gap: 14px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255,255,255,0.16);
  transition: background 300ms var(--ease);
}

.page-products .pp-feature-item:first-child {
  border-top: 1px solid rgba(255,255,255,0.16);
}

.page-products .pp-feature-item:hover {
  background: rgba(255,255,255,0.04);
}

.page-products .pp-feature-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 2px solid var(--gold);
  color: var(--gold-light);
  background: rgba(201,162,39,0.1);
}

.page-products .pp-feature-icon svg {
  width: 22px;
  height: 22px;
}

.page-products .pp-feature-copy h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
}

.page-products .pp-feature-copy p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: rgba(255,255,255,0.72);
}

.page-products .pp-feature-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
  text-align: right;
  padding-top: 4px;
}

/* ===== 版本历史 ===== */
.page-products .pp-versions {
  background: var(--off-white);
}

.page-products .pp-versions-grid {
  display: grid;
  gap: 28px;
  margin-top: 28px;
}

.page-products .pp-versions-list {
  display: grid;
  gap: 12px;
}

.page-products .pp-version-item {
  background: var(--white);
  border: 2px solid var(--deep-blue);
  box-shadow: var(--shadow-soft);
  transition: border-color 300ms var(--ease);
}

.page-products .pp-version-item[open] {
  border-color: var(--gold);
}

.page-products .pp-version-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
  padding: 14px 16px;
  font-weight: 700;
  color: var(--dark-text);
  transition: background 300ms var(--ease);
}

.page-products .pp-version-item summary::-webkit-details-marker {
  display: none;
}

.page-products .pp-version-item summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--gold);
  width: 16px;
  text-align: center;
}

.page-products .pp-version-item[open] summary::before {
  content: "–";
}

.page-products .pp-version-item summary:hover {
  background: rgba(201,162,39,0.09);
}

.page-products .pp-version-tag {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--deep-blue);
  background: rgba(201,162,39,0.16);
  padding: 3px 8px;
}

.page-products .pp-version-desc {
  font-size: 14px;
  color: var(--dark-text);
}

.page-products .pp-version-log {
  margin: 0;
  padding: 6px 20px 18px 46px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--dark-text);
  display: grid;
  gap: 4px;
}

.page-products .pp-versions-media {
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
}

.page-products .pp-versions-media .image-frame {
  background: var(--deep-blue);
  box-shadow: var(--shadow-brutal);
}

/* ===== 系统要求 ===== */
.page-products .pp-requirements {
  background: var(--white);
}

.page-products .pp-req-grid {
  display: grid;
  gap: 20px;
  margin-top: 28px;
}

.page-products .pp-req-card {
  background: var(--off-white);
  border: 2px solid var(--gold);
  box-shadow: var(--shadow-soft);
  padding: 24px 20px;
}

.page-products .pp-req-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 2px solid var(--deep-blue);
  background: var(--white);
  margin-bottom: 16px;
}

.page-products .pp-req-icon .pp-ico {
  width: 28px;
  height: 28px;
  color: var(--gold);
}

.page-products .pp-req-card h3 {
  margin: 0 0 14px;
  font-size: 18px;
  color: var(--dark-text);
}

.page-products .pp-req-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--dark-text);
}

.page-products .pp-req-list li {
  position: relative;
  padding-left: 18px;
}

.page-products .pp-req-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  background: var(--red);
}

.page-products .pp-req-band {
  margin-top: 28px;
  border-left: 6px solid var(--gold);
  background: var(--off-white);
  padding: 18px;
}

.page-products .pp-req-band .image-frame {
  background: var(--deep-blue);
  box-shadow: var(--shadow-soft);
}

.page-products .pp-req-band p {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--dark-text);
}

.page-products .pp-req-band a {
  color: var(--deep-blue-2);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ===== 延伸阅读 ===== */
.page-products .pp-cross-links {
  background: var(--gradient-primary);
  color: var(--white);
}

.page-products .pp-cross-links .container {
  display: grid;
  justify-items: start;
}

.page-products .pp-cross-title {
  font-size: 30px;
  font-weight: 900;
  margin: 6px 0 20px;
  letter-spacing: -0.02em;
}

.page-products .pp-cross-links-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== 按钮悬停 ===== */
.page-products a.btn {
  transition: background 300ms var(--ease), transform 300ms var(--ease), box-shadow 300ms var(--ease);
}

.page-products a.btn:hover {
  transform: translateY(-2px);
}

/* ===== 响应式：平板 / 桌面 ===== */
@media (min-width: 768px) {
  .page-products {
    --pp-pad-y: 72px;
  }

  .page-products .pp-hero {
    padding-top: 40px;
    padding-bottom: 56px;
  }

  .page-products .pp-hero-toc-wrap {
    padding-top: 28px;
    padding-bottom: 12px;
  }

  .page-products .pp-hero-toc {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-products .pp-download-grid {
    grid-template-columns: 0.9fr 1.15fr 0.9fr;
    align-items: stretch;
    gap: 26px;
  }

  .page-products .pp-download-card {
    padding: 28px 24px;
  }

  .page-products .pp-download-visual {
    align-items: center;
  }

  .page-products .pp-download-visual .image-frame {
    width: 100%;
  }

  .page-products .pp-features-grid {
    grid-template-columns: 0.85fr 1.5fr;
    gap: 44px;
    align-items: center;
  }

  .page-products .pp-phone-frame {
    max-width: 320px;
    margin: 0;
  }

  .page-products .pp-versions-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 40px;
    align-items: center;
  }

  .page-products .pp-req-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .page-products .pp-req-band {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    align-items: center;
    gap: 24px;
    padding: 20px 24px;
  }

  .page-products .pp-req-band p {
    margin: 0;
  }

  .page-products .pp-feature-copy h3 {
    font-size: 18px;
  }

  .page-products .pp-feature-copy p {
    font-size: 15px;
  }
}