/* ========== 页面专属样式：APP下载 / products ========== */
.page-products {
  --products-deep: #ECE5D5;
  background: var(--paper);
}

/* 面包屑 */
.page-products .breadcrumb {
  padding: 28px 0 12px;
  font-size: 0.875rem;
  color: var(--gray);
}
.page-products .breadcrumb a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.page-products .breadcrumb a:hover {
  border-bottom-color: var(--accent);
}
.page-products .breadcrumb-sep {
  margin: 0 8px;
  color: var(--line);
}

/* 首屏主视觉 */
.page-products .app-hero {
  position: relative;
  padding: 48px 0 64px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.page-products .app-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: -20px;
  width: 170px;
  height: 46px;
  background: var(--ink);
  transform: skewX(-16deg);
  transform-origin: top right;
}
.page-products .app-hero-inner {
  position: relative;
}
.page-products .app-hero-copy {
  position: relative;
  z-index: 2;
}
.page-products .app-hero h1 {
  margin: 20px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 7vw, 3.2rem);
  line-height: 1.14;
  letter-spacing: 0.01em;
  color: var(--ink);
  max-width: 12em;
}
.page-products .app-hero h1::after {
  content: "";
  display: block;
  width: 72px;
  height: 8px;
  margin-top: 20px;
  background: var(--accent);
  transform: skewX(-18deg);
}
.page-products .app-hero-lead {
  max-width: 34em;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--gray);
}
.page-products .app-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 30px 0 38px;
}
.page-products .app-hero-actions .btn:active,
.page-products .download-actions .btn:active {
  transform: scale(0.97);
}
.page-products .app-hero-actions .btn,
.page-products .download-actions .btn {
  padding: 14px 28px;
  font-size: 1rem;
}
.page-products .app-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  padding: 24px 0 0;
  border-top: 2px solid var(--ink);
}
.page-products .app-hero-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.page-products .app-hero-stat-num {
  font-family: var(--font-display);
  font-size: 2.1rem;
  line-height: 1;
  color: var(--ink);
}
.page-products .app-hero-stat-label {
  font-size: 0.8125rem;
  color: var(--gray);
}
.page-products .app-hero-visual {
  position: relative;
  margin-top: 44px;
  max-width: 460px;
  margin-left: auto;
  margin-right: auto;
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: var(--shadow-md);
}
.page-products .app-hero-visual::after {
  content: "";
  position: absolute;
  left: -14px;
  bottom: -14px;
  width: 76px;
  height: 76px;
  background: var(--secondary-accent);
  opacity: 0.3;
  z-index: 0;
}
.page-products .app-hero-img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  padding: 12px;
}

/* 客户端功能 */
.page-products .feature-section {
  background: var(--ink);
  color: var(--white);
  padding: 84px 0;
}
.page-products .feature-section .tag {
  background: var(--accent);
  color: var(--ink);
}
.page-products .feature-head h2 {
  color: var(--white);
}
.page-products .feature-head p {
  color: rgba(255, 255, 255, 0.72);
  max-width: 38em;
}
.page-products .feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 40px;
}
.page-products .feature-card {
  position: relative;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  padding: 30px 28px 26px;
  display: flex;
  flex-direction: column;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.page-products .feature-card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.28);
}
.page-products .feature-card-main {
  border-top: 4px solid var(--accent);
}
.page-products .feature-card svg {
  width: 34px;
  height: 34px;
  margin-bottom: 18px;
  color: var(--accent);
}
.page-products .feature-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: 0.02em;
  color: var(--white);
}
.page-products .feature-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.74);
}
.page-products .feature-num {
  position: absolute;
  right: 24px;
  top: 18px;
  font-family: var(--font-display);
  font-size: 1.6rem;
  line-height: 1;
  color: rgba(255, 255, 255, 0.18);
}
.page-products .feature-more {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.page-products .feature-more summary {
  display: inline-block;
  list-style: none;
  cursor: pointer;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--accent);
}
.page-products .feature-more summary::-webkit-details-marker {
  display: none;
}
.page-products .feature-more summary::before {
  content: "+ ";
  font-weight: 700;
}
.page-products .feature-more[open] summary::before {
  content: "− ";
}
.page-products .feature-more p {
  margin: 10px 0 0;
  font-size: 0.875rem;
}
.page-products .feature-visual {
  margin: 36px 0 0;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.04);
}
.page-products .feature-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-products .feature-visual figcaption {
  padding: 14px 18px;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.6);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* 下载渠道 */
.page-products .download-section {
  position: relative;
  padding: 88px 0 96px;
  background: var(--paper);
}
.page-products .download-section::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 130px;
  height: 10px;
  background: var(--accent);
  transform: skewX(-30deg);
  transform-origin: right top;
}
.page-products .download-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
  align-items: center;
}
.page-products .download-head h2 {
  color: var(--ink);
}
.page-products .download-desc {
  max-width: 36em;
  margin: 16px 0 30px;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--gray);
}
.page-products .download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.page-products .download-note {
  margin-top: 18px;
  font-size: 0.8125rem;
  color: var(--gray);
}
.page-products .download-visual {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--white);
}
.page-products .download-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* 版本历史 */
.page-products .version-section {
  padding: 88px 0 96px;
  background: var(--products-deep);
  border-top: 8px solid var(--ink);
}
.page-products .version-head p {
  max-width: 38em;
}
.page-products .version-visual {
  margin: 36px 0 0;
  border: 1px solid var(--line);
  background: var(--white);
}
.page-products .version-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-products .version-track {
  position: relative;
  margin-top: 40px;
  padding-left: 30px;
}
.page-products .version-track::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: var(--line);
}
.page-products .version-item {
  position: relative;
  margin-bottom: 20px;
  padding: 20px 22px;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius);
}
.page-products .version-item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 26px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--paper);
  box-shadow: 0 0 0 1px var(--ink);
}
.page-products .version-meta {
  display: inline-block;
  padding: 3px 10px 2px;
  background: var(--ink);
  color: var(--white);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}
.page-products .version-item h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--ink);
}
.page-products .version-item p {
  margin: 0;
  font-size: 0.90625rem;
  line-height: 1.7;
  color: var(--gray);
}
.page-products .version-archive {
  margin-top: 30px;
  border: 1px solid var(--line);
  background: var(--white);
}
.page-products .version-archive summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 24px;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}
.page-products .version-archive summary::-webkit-details-marker {
  display: none;
}
.page-products .version-archive summary::after {
  content: "+";
  font-size: 1.5rem;
  line-height: 1;
  color: var(--accent);
  transition: transform 0.2s ease;
}
.page-products .version-archive[open] summary::after {
  content: "−";
}
.page-products .version-archive-list {
  padding: 6px 24px 16px;
  border-top: 1px solid var(--line);
}
.page-products .version-archive-item {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.page-products .version-archive-item:last-child {
  border-bottom: none;
}
.page-products .version-archive-code {
  min-width: 76px;
  font-family: var(--font-display);
  font-size: 1.125rem;
  color: var(--ink);
}
.page-products .version-archive-item p {
  flex: 1;
  margin: 0;
  font-size: 0.90625rem;
  line-height: 1.7;
  color: var(--gray);
}

/* 安装指引 */
.page-products .install-section {
  padding: 88px 0 100px;
  background: var(--paper);
}
.page-products .install-head h2 {
  color: var(--ink);
}
.page-products .install-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  margin-top: 40px;
  align-items: start;
}
.page-products .install-visual {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--white);
}
.page-products .install-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-products .install-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-products .install-steps li {
  display: flex;
  gap: 20px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}
.page-products .install-steps li:first-child {
  padding-top: 0;
}
.page-products .install-step-num {
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.25rem;
}
.page-products .install-steps h3 {
  margin: 2px 0 8px;
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--ink);
}
.page-products .install-steps p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--gray);
}
.page-products .install-note {
  margin-top: 30px;
  padding: 18px 24px;
  border-left: 4px solid var(--accent);
  background: rgba(255, 165, 0, 0.08);
  color: var(--gray);
  font-size: 0.9375rem;
  line-height: 1.85;
}
.page-products .install-note a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--accent);
}
.page-products .install-note a:hover {
  background: var(--accent);
  color: var(--ink);
}

/* 响应式：平板及以上 */
@media (min-width: 800px) {
  .page-products .app-hero {
    padding: 72px 0 80px;
  }
  .page-products .app-hero-inner {
    display: grid;
    grid-template-columns: 1fr 440px;
    gap: 52px;
    align-items: center;
  }
  .page-products .app-hero-visual {
    margin-top: 0;
  }

  .page-products .feature-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .page-products .feature-card-wide {
    grid-column: 1 / -1;
  }

  .page-products .download-grid {
    grid-template-columns: 3fr 2fr;
    gap: 56px;
  }

  .page-products .version-track {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    padding-left: 0;
    padding-top: 40px;
  }
  .page-products .version-track::before {
    left: 16px;
    right: 16px;
    top: 24px;
    bottom: auto;
    width: auto;
    height: 2px;
  }
  .page-products .version-item {
    margin-bottom: 0;
  }
  .page-products .version-item::before {
    left: 50%;
    top: -24px;
    transform: translateX(-50%);
  }

  .page-products .install-grid {
    grid-template-columns: 380px 1fr;
    gap: 64px;
  }
}

/* 响应式：大屏 */
@media (min-width: 1100px) {
  .page-products .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-products .feature-card-main {
    grid-column: span 2;
  }
  .page-products .feature-card-wide {
    grid-column: span 2;
  }
}