.page-products {
  --page-bg: #0D1117;
  --card-bg: #002845;
  --card-glass: rgba(255, 255, 255, 0.08);
  --orange-glow: #FF5722;
  --gold-accent: #D4AF37;
  --text-light: #EAEAEA;
  --text-muted: #B0B0B0;
  --flip-speed: 0.5s;
  --skill-line-color: rgba(212, 175, 55, 0.25);
  --border-glow: 0 0 12px rgba(255, 87, 34, 0.3);
  display: block;
  width: 100%;
  background-color: var(--page-bg);
  color: var(--text-light);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

/* ===== 容器与通用 ===== */
.page-products .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
  box-sizing: border-box;
}

.page-products .section-title {
  font-size: 2rem;
  font-weight: bold;
  letter-spacing: 0.05em;
  margin: 0 0 0.5rem;
  color: var(--text-light);
  position: relative;
  display: inline-block;
}

.page-products .section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--gold-accent);
  margin-top: 0.4rem;
  border-radius: 2px;
}

.page-products .section-desc {
  font-size: 1rem;
  color: var(--text-muted);
  margin: 0 0 2rem;
  max-width: 640px;
}

/* ===== 面包屑 ===== */
.page-products .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 1rem 0 0.5rem;
  flex-wrap: wrap;
}

.page-products .breadcrumb a {
  color: var(--gold-accent);
  text-decoration: none;
  transition: color 0.2s;
}

.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus {
  color: var(--orange-glow);
  outline: none;
  text-decoration: underline;
}

.page-products .breadcrumb-sep {
  color: var(--text-muted);
  user-select: none;
}

.page-products .breadcrumb-current {
  color: var(--text-light);
  font-weight: 500;
}

/* ===== Hero 区 ===== */
.page-products .app-hero {
  padding: 1.5rem 0 2.5rem;
  background: linear-gradient(135deg, #0D1117 0%, #001a2e 70%, #002845 100%);
  position: relative;
  overflow: hidden;
}

.page-products .app-hero::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -20%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,87,34,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.page-products .hero-content {
  position: relative;
  z-index: 1;
}

.page-products .hero-title {
  font-size: 3rem;
  font-weight: bold;
  letter-spacing: 0.08em;
  margin: 0.5rem 0 0.2rem;
  color: var(--text-light);
  line-height: 1.15;
}

.page-products .hero-subtitle {
  font-size: 1.15rem;
  color: var(--orange-glow);
  font-weight: 500;
  letter-spacing: 0.03em;
  margin: 0.3rem 0;
}

.page-products .hero-desc {
  font-size: 1rem;
  color: var(--text-muted);
  margin: 0.5rem 0 1.8rem;
  max-width: 540px;
}

/* ===== 技能树 ===== */
.page-products .skill-tree {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem 0;
  position: relative;
  z-index: 1;
}

.page-products .skill-node {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--card-glass);
  border: 1px solid rgba(212, 175, 55, 0.15);
  border-radius: 8px;
  cursor: default;
  position: relative;
  transition: background 0.25s, border-color 0.25s, box-shadow 0.25s;
  outline: none;
}

.page-products .skill-node:hover,
.page-products .skill-node:focus {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--gold-accent);
  box-shadow: 0 0 0 2px rgba(212, 175, 55, 0.2);
}

.page-products .skill-node-marker {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gold-accent);
  color: #0D1117;
  font-weight: bold;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-caption, monospace);
}

.page-products .skill-node-label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-light);
  letter-spacing: 0.02em;
}

.page-products .skill-node-detail {
  display: none;
  position: absolute;
  left: 0;
  top: calc(100% + 6px);
  width: 100%;
  padding: 0.65rem 1rem;
  background: #002845;
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--text-light);
  z-index: 10;
  box-shadow: 0 4px 16px rgba(0,0,0,0.5);
  box-sizing: border-box;
}

.page-products .skill-node:hover .skill-node-detail,
.page-products .skill-node:focus .skill-node-detail,
.page-products .skill-node:focus-within .skill-node-detail {
  display: block;
}

.page-products .skill-connector {
  display: none;
  width: 2px;
  height: 16px;
  background: var(--skill-line-color);
  margin: 0 auto;
}

/* ===== 功能卡片 (翻转) ===== */
.page-products .features-section {
  padding: 3rem 0;
  background: #0D1117;
}

.page-products .features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
}

.page-products .flip-card {
  perspective: 800px;
  height: 240px;
  outline: none;
}

.page-products .flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform var(--flip-speed) ease;
  transform-style: preserve-3d;
}

.page-products .flip-card:hover .flip-card-inner,
.page-products .flip-card:focus .flip-card-inner,
.page-products .flip-card:focus-within .flip-card-inner {
  transform: rotateY(180deg);
}

.page-products .flip-card-front,
.page-products .flip-card-back {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 10px;
  padding: 1.5rem;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  border: 1px solid rgba(212, 175, 55, 0.12);
}

.page-products .flip-card-front {
  background: var(--card-bg);
  background-image: radial-gradient(circle at 20% 30%, rgba(255,87,34,0.06) 0%, transparent 60%);
}

.page-products .flip-card-back {
  background: #001f3a;
  transform: rotateY(180deg);
  border-color: var(--gold-accent);
}

.page-products .flip-icon {
  font-size: 2.2rem;
  margin-bottom: 0.6rem;
  display: block;
  color: var(--orange-glow);
  line-height: 1;
}

.page-products .flip-title {
  font-size: 1.25rem;
  font-weight: bold;
  letter-spacing: 0.04em;
  margin: 0 0 0.3rem;
  color: var(--text-light);
}

.page-products .flip-brief {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
  max-width: 200px;
}

.page-products .flip-back-title {
  font-size: 1.15rem;
  font-weight: bold;
  letter-spacing: 0.04em;
  color: var(--gold-accent);
  margin: 0 0 0.5rem;
}

.page-products .flip-back-desc {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.6;
  margin: 0;
  max-width: 280px;
}

/* ===== 焕新版体验 ===== */
.page-products .experience-section {
  padding: 3rem 0;
  background: linear-gradient(180deg, #0D1117 0%, #001a2e 100%);
}

.page-products .experience-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

.page-products .experience-text {
  order: 2;
}

.page-products .stat-block {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 1.2rem;
  flex-wrap: wrap;
}

.page-products .stat-number {
  font-size: 3.2rem;
  font-weight: bold;
  color: var(--orange-glow);
  letter-spacing: 0.03em;
  line-height: 1;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}

.page-products .stat-label {
  font-size: 1.1rem;
  color: var(--text-muted);
  font-weight: 500;
}

.page-products .exp-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.page-products .exp-list li {
  position: relative;
  padding-left: 1.4rem;
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.5;
}

.page-products .exp-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 7px;
  height: 7px;
  border-radius: 1px;
  background: var(--gold-accent);
  transform: rotate(45deg);
}

.page-products .experience-visual {
  order: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-products .exp-chart {
  width: 100%;
  max-width: 600px;
  height: auto;
  border-radius: 10px;
  object-fit: cover;
  border: 1px solid rgba(212, 175, 55, 0.1);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.page-products .exp-caption {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  font-style: italic;
  font-family: monospace;
  transform: rotate(0deg);
  letter-spacing: 0.03em;
}

/* ===== 订阅与检索 ===== */
.page-products .subscribe-section {
  padding: 3rem 0;
  background: #0D1117;
}

.page-products .subscribe-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.page-products .sub-card {
  background: var(--card-bg);
  border-radius: 10px;
  border: 1px solid rgba(212, 175, 55, 0.1);
  transition: border-color 0.3s, box-shadow 0.3s;
  overflow: hidden;
}

.page-products .sub-card:hover,
.page-products .sub-card:focus-within {
  border-color: var(--gold-accent);
  box-shadow: 0 0 0 2px rgba(212, 175, 55, 0.15);
}

.page-products .sub-card-content {
  padding: 1.5rem;
}

.page-products .sub-icon {
  font-size: 1.8rem;
  display: block;
  color: var(--orange-glow);
  margin-bottom: 0.4rem;
  line-height: 1;
}

.page-products .sub-title {
  font-size: 1.2rem;
  font-weight: bold;
  letter-spacing: 0.04em;
  margin: 0 0 0.4rem;
  color: var(--text-light);
}

.page-products .sub-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0 0 1.2rem;
  max-width: 520px;
}

.page-products .sub-preview {
  border-radius: 8px;
  overflow: hidden;
  background: rgba(0,0,0,0.2);
}

.page-products .sub-img {
  width: 100%;
  height: auto;
  max-width: 500px;
  display: block;
  object-fit: cover;
  border-radius: 6px;
}

/* ===== 下载区 ===== */
.page-products .download-section {
  padding: 3rem 0 2.5rem;
  background: linear-gradient(135deg, #001a2e 0%, #0D1117 70%);
  position: relative;
}

.page-products .download-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-accent), transparent);
  opacity: 0.3;
}

.page-products .download-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
  text-align: center;
}

.page-products .qr-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
}

.page-products .qr-code {
  width: 160px;
  height: auto;
  max-width: 200px;
  border-radius: 10px;
  border: 2px solid rgba(212, 175, 55, 0.25);
  box-shadow: 0 0 20px rgba(255, 87, 34, 0.15), 0 4px 24px rgba(0,0,0,0.5);
  transition: transform 0.3s, box-shadow 0.3s;
}

.page-products .qr-code:hover {
  transform: scale(1.06);
  box-shadow: 0 0 30px rgba(255, 87, 34, 0.25), 0 6px 32px rgba(0,0,0,0.6);
}

.page-products .qr-note {
  font-size: 0.85rem;
  color: var(--gold-accent);
  letter-spacing: 0.06em;
  font-weight: 500;
}

.page-products .install-info {
  text-align: left;
  background: var(--card-glass);
  border-radius: 10px;
  padding: 1.5rem;
  border: 1px solid rgba(212, 175, 55, 0.08);
}

.page-products .install-title {
  font-size: 1.1rem;
  font-weight: bold;
  letter-spacing: 0.04em;
  color: var(--text-light);
  margin: 0 0 0.8rem;
}

.page-products .install-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.page-products .install-list li {
  position: relative;
  padding-left: 1.3rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.page-products .install-list li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--orange-glow);
  font-weight: bold;
  font-size: 1.1rem;
}

/* ===== 页面内链 ===== */
.page-products .page-inline-links {
  padding: 1.5rem 0 2rem;
  background: #0D1117;
  border-top: 1px solid rgba(212, 175, 55, 0.06);
}

.page-products .inline-links-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-right: 0.6rem;
}

.page-products .inline-link {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--gold-accent);
  text-decoration: none;
  margin: 0.2rem 0.6rem 0.2rem 0;
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  transition: color 0.2s, background 0.2s;
}

.page-products .inline-link:hover,
.page-products .inline-link:focus {
  color: var(--orange-glow);
  background: rgba(255, 87, 34, 0.08);
  outline: none;
  text-decoration: underline;
}

/* ============================================ */
/* 桌面端 (≥768px) */
/* ============================================ */
@media (min-width: 768px) {
  .page-products .container {
    padding: 0 2rem;
  }

  .page-products .section-title {
    font-size: 2.4rem;
  }

  /* Hero */
  .page-products .hero-title {
    font-size: 4.2rem;
  }

  .page-products .hero-subtitle {
    font-size: 1.35rem;
  }

  /* 技能树 → 横向 */
  .page-products .skill-tree {
    flex-direction: row;
    align-items: center;
    gap: 0;
    padding: 2rem 0 1rem;
  }

  .page-products .skill-node {
    flex: 1;
    flex-direction: column;
    text-align: center;
    padding: 1.2rem 0.8rem;
    gap: 0.5rem;
    border: none;
    background: transparent;
    border-radius: 0;
    position: relative;
  }

  .page-products .skill-node:hover,
  .page-products .skill-node:focus {
    background: rgba(255, 255, 255, 0.03);
    box-shadow: none;
  }

  .page-products .skill-node-marker {
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
  }

  .page-products .skill-node-label {
    font-size: 1rem;
  }

  .page-products .skill-node-detail {
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    text-align: center;
    padding: 0.7rem 1rem;
  }

  .page-products .skill-connector {
    display: block;
    flex-shrink: 0;
    width: 100%;
    max-width: 48px;
    height: 2px;
    background: var(--skill-line-color);
    margin: 0 0.2rem;
  }

  /* 功能卡片网格 */
  .page-products .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .page-products .flip-card {
    height: 260px;
  }

  /* 焕新版体验 */
  .page-products .experience-content {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }

  .page-products .experience-text {
    order: 1;
  }

  .page-products .experience-visual {
    order: 2;
    align-items: flex-start;
  }

  .page-products .stat-number {
    font-size: 4rem;
  }

  /* 订阅与检索 */
  .page-products .subscribe-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .page-products .sub-card-content {
    padding: 2rem;
  }

  /* 下载区 */
  .page-products .download-content {
    grid-template-columns: auto 1fr;
    text-align: left;
    gap: 2.5rem;
  }

  .page-products .qr-code {
    width: 200px;
  }

  .page-products .install-info {
    padding: 2rem;
  }
}

/* ============================================ */
/* 大桌面 (≥1024px) */
/* ============================================ */
@media (min-width: 1024px) {
  .page-products .container {
    padding: 0 2.5rem;
  }

  .page-products .app-hero {
    padding: 2rem 0 3.5rem;
  }

  .page-products .hero-title {
    font-size: 5rem;
  }

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

  .page-products .flip-card {
    height: 280px;
  }

  .page-products .flip-card-front,
  .page-products .flip-card-back {
    padding: 2rem 1.2rem;
  }

  .page-products .skill-node-detail {
    width: 240px;
  }

  .page-products .experience-section,
  .page-products .subscribe-section,
  .page-products .features-section {
    padding: 4rem 0;
  }
}

/* ============================================ */
/* 超大桌面 (≥1400px) 内容宽度约束 */
/* ============================================ */
@media (min-width: 1400px) {
  .page-products .container {
    max-width: 1200px;
    padding: 0 1rem;
  }
}

/* ===== 响应式图片保护 ===== */
.page-products img {
  max-width: 100%;
  height: auto;
}

/* ===== 焦点样式全局 ===== */
.page-products *:focus-visible {
  outline: 2px solid var(--gold-accent);
  outline-offset: 2px;
  border-radius: 3px;
}