.page-products {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 100%;
  overflow-x: hidden;
  --card-perspective: 1200px;
  --card-radius: var(--radius-md, 12px);
  --card-shadow: var(--shadow-card, 0 4px 16px rgba(10,46,77,0.08));
  --card-shadow-hover: var(--shadow-card-hover, 0 8px 28px rgba(10,46,77,0.16));
  --hero-bg: var(--color-primary, #0A2E4D);
  --services-bg: var(--color-primary, #0A2E4D);
  --subscribe-bg: var(--color-bg-light, #F2F4F6);
  --mobile-bg: var(--color-white, #FFFFFF);
  --accent: var(--color-accent, #FF6B35);
  --accent-hover: var(--color-accent-hover, #e55a2a);
  --text-dark: var(--color-text-dark, #1C1C1E);
  --text-light: #e8edf2;
  --text-muted: #a0b3c7;
  --border-light: rgba(255,255,255,0.15);
  --border-card: var(--color-border, #C4C8CB);
  --font-head: var(--font-heading, 'Helvetica Neue', Arial, sans-serif);
  --font-body: var(--font-body, 'Inter', sans-serif);
}

/* ---------- 面包屑 ---------- */
.page-products .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.5rem;
  font-size: 0.8rem;
  font-family: var(--font-body);
  color: var(--text-muted);
  background: var(--hero-bg);
  margin: 0;
}
.page-products .breadcrumb a {
  color: var(--accent);
  text-decoration: none;
  transition: opacity var(--transition-base, 0.25s ease);
}
.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus-visible {
  opacity: 0.75;
  text-decoration: underline;
}
.page-products .breadcrumb .brand-divider {
  color: var(--text-muted);
  user-select: none;
}
.page-products .breadcrumb [aria-current="page"] {
  color: var(--text-light);
  font-weight: 600;
}

/* ---------- Hero ---------- */
.page-products__hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  padding: 2rem 1.5rem 2.5rem;
  background: var(--hero-bg);
  position: relative;
  overflow: hidden;
}
.page-products__hero::after {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255,107,53,0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.page-products__hero-text {
  text-align: center;
  z-index: 1;
}
.page-products__hero-title {
  color: var(--color-white, #FFFFFF);
  font-size: 2.2rem;
  margin: 0 0 0.5rem;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.page-products__hero-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--accent);
  margin: 0.75rem auto 0;
  border-radius: 2px;
}
.page-products__hero-sub {
  color: var(--text-light);
  font-size: 1.1rem;
  font-family: var(--font-body);
  font-weight: 400;
  margin: 0.75rem 0 0.5rem;
  line-height: 1.4;
}
.page-products__hero-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-family: var(--font-body);
  margin: 0.25rem 0 0;
  line-height: 1.5;
  max-width: 440px;
}
.page-products__hero-visual {
  flex-shrink: 0;
  z-index: 1;
  position: relative;
}
.page-products__app-icon {
  display: block;
  width: 140px;
  height: 140px;
  object-fit: contain;
  border-radius: var(--radius-lg, 20px);
  box-shadow: 0 8px 32px rgba(255,107,53,0.25);
  background: var(--color-white, #FFFFFF);
  padding: 8px;
}
@media (min-width: 640px) {
  .page-products__app-icon {
    width: 180px;
    height: 180px;
  }
}

/* ---------- 服务范围 ---------- */
.page-products__services {
  background: var(--services-bg);
  padding: 2.5rem 1.5rem;
}
.page-products__services-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.page-products__services-heading {
  color: var(--color-white, #FFFFFF);
  font-size: 1.8rem;
  margin: 0 0 0.25rem;
  letter-spacing: -0.02em;
}
.page-products__services-heading::after {
  content: '';
  display: block;
  width: 50px;
  height: 4px;
  background: var(--accent);
  margin-top: 0.6rem;
  border-radius: 2px;
}
.page-products__services-intro {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-family: var(--font-body);
  margin: 0.5rem 0 2rem;
  line-height: 1.5;
}

/* ---------- 卡片网格 ---------- */
.page-products__card-grid {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* ---------- 单张卡片 ---------- */
.page-products__card {
  perspective: var(--card-perspective);
  width: 100%;
}
.page-products__card-toggle {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}
.page-products__card-label {
  display: block;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.page-products__card-inner {
  position: relative;
  width: 100%;
  min-height: 200px;
  transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
  transform-style: preserve-3d;
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
}
.page-products__card-toggle:checked + .page-products__card-label .page-products__card-inner {
  transform: rotateY(180deg);
}
.page-products__card-front,
.page-products__card-back {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1.5rem 1rem;
  border-radius: var(--card-radius);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border: 1px solid var(--border-card);
  background: var(--color-bg-light, #F2F4F6);
}
.page-products__card-front {
  z-index: 2;
}
.page-products__card-back {
  transform: rotateY(180deg);
  background: var(--color-white, #FFFFFF);
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent);
}
.page-products__card-back p {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-dark);
  line-height: 1.6;
  text-align: center;
  max-width: 280px;
  margin: 0;
}
.page-products__card-icon {
  display: block;
  width: 56px;
  height: 56px;
  object-fit: contain;
  border-radius: var(--radius-sm, 6px);
  background: var(--color-white, #FFFFFF);
  padding: 4px;
  box-shadow: 0 2px 8px rgba(10,46,77,0.06);
}
.page-products__card-name {
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-dark);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.page-products__card .tag {
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  background: var(--accent);
  color: var(--color-white, #FFFFFF);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.page-products__card .tag-light {
  background: var(--color-secondary-btn, #1E4D73);
  color: var(--text-light);
}

/* 卡片大小变体 */
.page-products__card--large .page-products__card-inner {
  min-height: 240px;
}
.page-products__card--medium .page-products__card-inner {
  min-height: 210px;
}
.page-products__card--small .page-products__card-inner {
  min-height: 180px;
}

/* ---------- 订阅收藏 ---------- */
.page-products__subscribe {
  background: var(--subscribe-bg);
  padding: 2.5rem 1.5rem;
}
.page-products__subscribe-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}
.page-products__subscribe-content {
  text-align: center;
}
.page-products__subscribe-content .section-title {
  color: var(--text-dark);
  font-size: 1.8rem;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}
.page-products__subscribe-content .section-title::after {
  content: '';
  display: block;
  width: 50px;
  height: 4px;
  background: var(--accent);
  margin: 0.6rem auto 0;
  border-radius: 2px;
}
.page-products__subscribe-text {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-dark);
  line-height: 1.7;
  margin: 0 0 0.75rem;
  max-width: 680px;
}
.page-products__subscribe-meta {
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: #5a6a7a;
  margin-top: 0.5rem;
}
.page-products__subscribe-meta a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}
.page-products__subscribe-meta a:hover,
.page-products__subscribe-meta a:focus-visible {
  text-decoration: underline;
}
.page-products__subscribe-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  position: relative;
}
.page-products__subscribe-icon {
  display: block;
  width: 72px;
  height: 72px;
  object-fit: contain;
  border-radius: var(--radius-md, 12px);
  background: var(--color-white, #FFFFFF);
  padding: 6px;
  box-shadow: 0 4px 16px rgba(10,46,77,0.08);
}
.page-products__subscribe-badge {
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-white, #FFFFFF);
  background: var(--accent);
  padding: 0.2rem 0.8rem;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ---------- 移动端体验 ---------- */
.page-products__mobile {
  background: var(--mobile-bg);
  padding: 2.5rem 1.5rem;
}
.page-products__mobile-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.page-products__mobile-visual {
  position: relative;
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
}
.page-products__mobile-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md, 12px);
  box-shadow: var(--shadow-card, 0 4px 16px rgba(10,46,77,0.08));
  background: var(--color-bg-light, #F2F4F6);
  object-fit: cover;
}
.page-products__mobile-wave {
  position: absolute;
  bottom: -8px;
  right: -12px;
  width: 160px;
  height: auto;
  opacity: 0.15;
  pointer-events: none;
  transform: scaleX(-1);
  z-index: 0;
}
@media (min-width: 640px) {
  .page-products__mobile-wave {
    width: 240px;
    right: -20px;
    bottom: -12px;
  }
}
.page-products__mobile-content {
  text-align: left;
}
.page-products__mobile-content .section-title {
  color: var(--text-dark);
  font-size: 1.8rem;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}
.page-products__mobile-content .section-title::after {
  content: '';
  display: block;
  width: 50px;
  height: 4px;
  background: var(--accent);
  margin-top: 0.6rem;
  border-radius: 2px;
}
.page-products__mobile-text {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-dark);
  line-height: 1.7;
  margin: 0 0 0.75rem;
  max-width: 640px;
}
.page-products__mobile-meta {
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: #5a6a7a;
  margin-top: 0.5rem;
}
.page-products__mobile-meta a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}
.page-products__mobile-meta a:hover,
.page-products__mobile-meta a:focus-visible {
  text-decoration: underline;
}

/* ========== 桌面端 >= 768px ========== */
@media (min-width: 768px) {
  .page-products .breadcrumb {
    padding: 1rem 2.5rem;
  }

  .page-products__hero {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 3rem 2.5rem 4rem;
    gap: 3rem;
  }
  .page-products__hero-text {
    text-align: left;
  }
  .page-products__hero-title {
    font-size: 3rem;
  }
  .page-products__hero-title::after {
    margin-left: 0;
    margin-right: 0;
  }
  .page-products__hero-sub {
    font-size: 1.25rem;
  }
  .page-products__hero-desc {
    font-size: 1rem;
  }
  .page-products__hero-visual {
    flex-shrink: 0;
  }
  .page-products__app-icon {
    width: 200px;
    height: 200px;
  }

  .page-products__services {
    padding: 3.5rem 2.5rem;
  }
  .page-products__services-heading {
    font-size: 2.2rem;
  }
  .page-products__card-grid {
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 1.5rem;
    align-items: stretch;
  }
  .page-products__card {
    flex: 1 1 0;
    min-width: 0;
  }
  .page-products__card--large {
    flex: 2.2 1 280px;
  }
  .page-products__card--medium {
    flex: 1.6 1 200px;
  }
  .page-products__card--small {
    flex: 1.2 1 160px;
  }
  .page-products__card-inner {
    min-height: 260px;
  }
  .page-products__card--large .page-products__card-inner {
    min-height: 300px;
  }
  .page-products__card--medium .page-products__card-inner {
    min-height: 260px;
  }
  .page-products__card--small .page-products__card-inner {
    min-height: 220px;
  }
  .page-products__card-icon {
    width: 64px;
    height: 64px;
  }
  .page-products__card-name {
    font-size: 1.3rem;
  }
  .page-products__card-back p {
    font-size: 0.95rem;
  }

  .page-products__subscribe {
    padding: 3.5rem 2.5rem;
  }
  .page-products__subscribe-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 3rem;
  }
  .page-products__subscribe-content {
    text-align: left;
    flex: 1 1 60%;
  }
  .page-products__subscribe-content .section-title::after {
    margin-left: 0;
    margin-right: 0;
  }
  .page-products__subscribe-visual {
    flex: 0 0 auto;
  }
  .page-products__subscribe-icon {
    width: 100px;
    height: 100px;
  }

  .page-products__mobile {
    padding: 3.5rem 2.5rem;
  }
  .page-products__mobile-inner {
    flex-direction: row;
    align-items: center;
    gap: 3rem;
  }
  .page-products__mobile-visual {
    flex: 1 1 50%;
    max-width: 600px;
  }
  .page-products__mobile-content {
    flex: 1 1 50%;
  }
  .page-products__mobile-content .section-title {
    font-size: 2.2rem;
  }
  .page-products__mobile-text {
    font-size: 1rem;
  }
}

/* ========== 大桌面端 >= 1024px ========== */
@media (min-width: 1024px) {
  .page-products__hero {
    padding: 4rem 3rem 5rem;
  }
  .page-products__hero-title {
    font-size: 3.6rem;
  }
  .page-products__services {
    padding: 4rem 3rem;
  }
  .page-products__subscribe {
    padding: 4rem 3rem;
  }
  .page-products__mobile {
    padding: 4rem 3rem;
  }
  .page-products__card-grid {
    gap: 2rem;
  }
  .page-products__card--large {
    flex: 2.4 1 320px;
  }
  .page-products__card--medium {
    flex: 1.8 1 240px;
  }
  .page-products__card--small {
    flex: 1.4 1 200px;
  }
}