/* ===== 页面专属 CSS：.page-products ===== */
.page-products {
  --products-panel-radius: var(--radius-lg, 16px);
  --products-index-w: 180px;
  --products-gap: var(--gap-xl, 40px);
  --products-card-min-h: 220px;
  --products-step-size: 300px;
}
.page-products__header {
  padding-top: calc(var(--header-top-h, 60px) + var(--nav-h, 48px) + var(--scroll-h, 3px) + var(--gap-lg, 24px));
  padding-bottom: var(--gap-lg, 24px);
  border-bottom: 1px solid var(--border-gray, #D0D5DD);
  margin-bottom: 0;
}
.page-products__title {
  font-size: var(--h1, 3.5rem);
  font-weight: var(--weight-black, 900);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: var(--gap-sm, 8px) 0 var(--gap-md, 16px);
  color: var(--text-black, #1A1A2E);
}
.page-products__subtitle {
  font-size: calc(var(--body, 1rem) * 1.15);
  font-weight: var(--weight-regular, 400);
  color: var(--text-gray, #4A4A5A);
  max-width: 640px;
  line-height: 1.6;
  margin: 0;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--gap-sm, 8px);
  font-size: var(--small, 0.875rem);
  color: var(--text-gray, #4A4A5A);
  margin-bottom: var(--gap-md, 16px);
}
.breadcrumb a {
  color: var(--primary-blue, #0066FF);
  text-decoration: none;
  transition: color var(--transition-fast, 0.2s ease);
}
.breadcrumb a:hover {
  color: var(--primary-blue-dark, #004CBF);
  text-decoration: underline;
}
.breadcrumb .sep {
  color: var(--border-gray, #D0D5DD);
}
.breadcrumb [aria-current="page"] {
  color: var(--text-black, #1A1A2E);
  font-weight: var(--weight-bold, 700);
}

/* ===== 服务总览（技能树） ===== */
.service-map {
  background: var(--bg-light, #F5F7FA);
  padding: var(--gap-xl, 40px) 0;
}
.service-map__inner {
  display: flex;
  gap: var(--products-gap);
  align-items: flex-start;
}
.service-index {
  flex: 0 0 var(--products-index-w);
  position: sticky;
  top: calc(var(--header-top-h, 60px) + var(--nav-h, 48px) + var(--scroll-h, 3px) + var(--gap-lg, 24px));
  z-index: 5;
}
.service-index__track {
  display: flex;
  flex-direction: column;
  gap: 2px;
  position: relative;
  padding-left: 24px;
}
.service-index__track::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: var(--border-gray, #D0D5DD);
  border-radius: 1px;
  z-index: 0;
}
.service-index__link {
  display: flex;
  align-items: center;
  gap: var(--gap-md, 16px);
  padding: var(--gap-sm, 8px) var(--gap-md, 16px);
  text-decoration: none;
  color: var(--text-gray, #4A4A5A);
  font-size: var(--small, 0.875rem);
  font-weight: var(--weight-regular, 400);
  border-radius: var(--radius-sm, 4px);
  transition: all var(--transition-fast, 0.2s ease);
  position: relative;
  z-index: 1;
  line-height: 1.4;
}
.service-index__link:hover,
.service-index__link:focus-visible {
  color: var(--primary-blue, #0066FF);
  background: rgba(0, 102, 255, 0.06);
}
.service-index__link:focus-visible {
  outline: 2px solid var(--primary-blue, #0066FF);
  outline-offset: 2px;
}
.service-index__link.active {
  color: var(--primary-blue, #0066FF);
  font-weight: var(--weight-bold, 700);
}
.service-index__dot {
  flex: 0 0 12px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--border-gray, #D0D5DD);
  border: 2px solid var(--bg-light, #F5F7FA);
  transition: all var(--transition-fast, 0.2s ease);
  position: relative;
  z-index: 1;
}
.service-index__link:hover .service-index__dot,
.service-index__link:focus-visible .service-index__dot,
.service-index__link.active .service-index__dot {
  background: var(--primary-blue, #0066FF);
  border-color: var(--primary-blue, #0066FF);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.15);
}

/* ===== 服务面板 ===== */
.service-panels {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--gap-md, 16px);
}
.service-panel {
  background: var(--bg-white, #FFFFFF);
  border-radius: var(--products-panel-radius);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,0.06));
  overflow: hidden;
  border: 1px solid var(--border-gray, #D0D5DD);
  transition: box-shadow var(--transition-fast, 0.2s ease), border-color var(--transition-fast, 0.2s ease);
}
.service-panel[open] {
  box-shadow: var(--shadow-md, 0 4px 12px rgba(0,0,0,0.08));
  border-color: var(--primary-blue, #0066FF);
}
.service-panel__summary {
  display: flex;
  align-items: center;
  gap: var(--gap-md, 16px);
  padding: var(--gap-md, 16px) var(--gap-lg, 24px);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background var(--transition-fast, 0.2s ease);
}
.service-panel__summary::-webkit-details-marker {
  display: none;
}
.service-panel__summary:hover {
  background: rgba(0, 102, 255, 0.03);
}
.service-panel__icon {
  flex: 0 0 28px;
  color: var(--primary-blue, #0066FF);
  opacity: 0.8;
}
.service-panel__heading {
  flex: 1;
  font-size: var(--h3, 1.75rem);
  font-weight: var(--weight-bold, 700);
  color: var(--text-black, #1A1A2E);
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.service-panel__arrow {
  flex: 0 0 18px;
  color: var(--text-gray, #4A4A5A);
  transition: transform var(--transition-smooth, 0.35s cubic-bezier(0.4,0,0.2,1));
}
.service-panel[open] .service-panel__arrow {
  transform: rotate(90deg);
}
.service-panel__body {
  border-top: 1px solid var(--border-gray, #D0D5DD);
}
.service-panel__img {
  width: 100%;
  height: auto;
  max-height: 200px;
  object-fit: cover;
  display: block;
  background: var(--bg-light, #F5F7FA);
}
.service-panel__content {
  padding: var(--gap-lg, 24px);
}
.service-panel__desc {
  font-size: var(--body, 1rem);
  line-height: 1.7;
  color: var(--text-gray, #4A4A5A);
  margin: 0 0 var(--gap-md, 16px);
}
.service-panel__list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--gap-sm, 8px) var(--gap-md, 16px);
  list-style: none;
  margin: 0;
  padding: 0;
}
.service-panel__item {
  position: relative;
  padding-left: 20px;
  font-size: var(--body, 1rem);
  line-height: 1.6;
  color: var(--text-black, #1A1A2E);
}
.service-panel__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 1px;
  background: var(--accent-orange, #FF6B35);
  opacity: 0.6;
}

/* ===== 重点服务推荐 ===== */
.featured-services {
  padding: var(--gap-xl, 40px) 0;
  background: var(--bg-white, #FFFFFF);
}
.featured-services__intro {
  margin-bottom: var(--gap-xl, 40px);
  max-width: 600px;
}
.featured-services__title {
  font-size: var(--h2, 2.5rem);
  font-weight: var(--weight-black, 900);
  letter-spacing: -0.02em;
  color: var(--text-black, #1A1A2E);
  margin: 0 0 var(--gap-sm, 8px);
  line-height: 1.15;
}
.featured-services__tagline {
  font-size: calc(var(--body, 1rem) * 1.1);
  color: var(--text-gray, #4A4A5A);
  line-height: 1.6;
  margin: 0;
}
.featured-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  gap: var(--gap-lg, 24px);
  align-items: stretch;
}
.featured-card {
  background: var(--bg-light, #F5F7FA);
  border-radius: var(--products-panel-radius);
  padding: var(--gap-lg, 24px) var(--gap-lg, 24px) var(--gap-xl, 40px);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  border: 1px solid transparent;
  transition: all var(--transition-fast, 0.2s ease);
  position: relative;
  overflow: hidden;
}
.featured-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-blue, #0066FF);
  opacity: 0.3;
  transition: opacity var(--transition-fast, 0.2s ease);
}
.featured-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md, 0 4px 12px rgba(0,0,0,0.08));
  border-color: var(--border-gray, #D0D5DD);
}
.featured-card:hover::before {
  opacity: 1;
}
.featured-card--highlight {
  background: var(--bg-white, #FFFFFF);
  border: 1px solid var(--primary-blue, #0066FF);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,0.06));
}
.featured-card--highlight::before {
  background: var(--accent-orange, #FF6B35);
  opacity: 1;
  height: 4px;
}
.featured-card__badge {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-white, #FFFFFF);
  color: var(--primary-blue, #0066FF);
  margin-bottom: var(--gap-md, 16px);
  flex-shrink: 0;
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,0.06));
}
.featured-card--highlight .featured-card__badge {
  background: var(--accent-orange, #FF6B35);
  color: var(--bg-white, #FFFFFF);
}
.featured-card__heading {
  font-size: var(--h3, 1.75rem);
  font-weight: var(--weight-bold, 700);
  color: var(--text-black, #1A1A2E);
  margin: 0 0 var(--gap-sm, 8px);
  line-height: 1.2;
  letter-spacing: -0.01em;
}
.featured-card__text {
  font-size: var(--body, 1rem);
  line-height: 1.7;
  color: var(--text-gray, #4A4A5A);
  margin: 0 0 var(--gap-lg, 24px);
  flex: 1;
}
.featured-card__action {
  margin-top: auto;
  align-self: flex-start;
}

/* ===== 如何开始使用 ===== */
.how-to-start {
  padding: var(--gap-xl, 40px) 0;
  background: var(--bg-light, #F5F7FA);
}
.how-to-start__intro {
  text-align: center;
  margin-bottom: var(--gap-xl, 40px);
}
.how-to-start__title {
  font-size: var(--h2, 2.5rem);
  font-weight: var(--weight-black, 900);
  letter-spacing: -0.02em;
  color: var(--text-black, #1A1A2E);
  margin: 0 0 var(--gap-sm, 8px);
  line-height: 1.15;
}
.how-to-start__desc {
  font-size: calc(var(--body, 1rem) * 1.1);
  color: var(--text-gray, #4A4A5A);
  margin: 0;
  line-height: 1.6;
}
.steps {
  display: flex;
  gap: var(--gap-lg, 24px);
  align-items: stretch;
  counter-reset: step-counter;
}
.step {
  flex: 1;
  background: var(--bg-white, #FFFFFF);
  border-radius: var(--products-panel-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,0.06));
  transition: transform var(--transition-fast, 0.2s ease), box-shadow var(--transition-fast, 0.2s ease);
  display: flex;
  flex-direction: column;
}
.step:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md, 0 4px 12px rgba(0,0,0,0.08));
}
.step__media {
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--bg-light, #F5F7FA);
}
.step__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-smooth, 0.35s cubic-bezier(0.4,0,0.2,1));
}
.step:hover .step__img {
  transform: scale(1.03);
}
.step__content {
  padding: var(--gap-md, 16px) var(--gap-lg, 24px) var(--gap-lg, 24px);
  flex: 1;
  display: flex;
  flex-direction: column;
}
.step__number {
  font-size: 2.8rem;
  font-weight: var(--weight-black, 900);
  color: var(--primary-blue, #0066FF);
  line-height: 1;
  opacity: 0.25;
  margin-bottom: var(--gap-sm, 8px);
  display: block;
}
.step__heading {
  font-size: var(--h3, 1.75rem);
  font-weight: var(--weight-bold, 700);
  color: var(--text-black, #1A1A2E);
  margin: 0 0 var(--gap-sm, 8px);
  line-height: 1.2;
  letter-spacing: -0.01em;
}
.step__text {
  font-size: var(--body, 1rem);
  line-height: 1.7;
  color: var(--text-gray, #4A4A5A);
  margin: 0;
  flex: 1;
}

/* ===== 延伸导航 ===== */
.related-links {
  padding: var(--gap-xl, 40px) 0;
  background: var(--bg-white, #FFFFFF);
  text-align: center;
}
.related-links__title {
  font-size: var(--h2, 2.5rem);
  font-weight: var(--weight-black, 900);
  color: var(--text-black, #1A1A2E);
  margin: 0 0 var(--gap-lg, 24px);
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.related-links__grid {
  display: flex;
  justify-content: center;
  gap: var(--gap-md, 16px);
  flex-wrap: wrap;
}
.related-link {
  display: inline-flex;
  align-items: center;
  gap: var(--gap-sm, 8px);
  padding: var(--gap-md, 16px) var(--gap-lg, 24px);
  background: var(--bg-light, #F5F7FA);
  border-radius: var(--radius-md, 8px);
  text-decoration: none;
  color: var(--text-black, #1A1A2E);
  font-weight: var(--weight-bold, 700);
  font-size: var(--body, 1rem);
  border: 1px solid transparent;
  transition: all var(--transition-fast, 0.2s ease);
}
.related-link:hover {
  background: var(--bg-white, #FFFFFF);
  border-color: var(--primary-blue, #0066FF);
  color: var(--primary-blue, #0066FF);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,0.06));
  transform: translateY(-2px);
}
.related-link__icon {
  flex: 0 0 24px;
  color: var(--primary-blue, #0066FF);
}

/* ===== 品牌装饰 ===== */
.page-products__decoration {
  padding: var(--gap-lg, 24px) 0 var(--gap-xl, 40px);
  display: flex;
  justify-content: center;
  background: var(--bg-light, #F5F7FA);
}
.page-products__decoration-img {
  width: 120px;
  height: 120px;
  object-fit: contain;
  opacity: 0.4;
  border-radius: 50%;
  background: rgba(0, 102, 255, 0.05);
}

/* ===== 按钮复用 ===== */
.page-products .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  font-size: var(--small, 0.875rem);
  font-weight: var(--weight-bold, 700);
  line-height: 1.4;
  border-radius: var(--radius-sm, 4px);
  background: var(--primary-blue, #0066FF);
  color: var(--bg-white, #FFFFFF);
  text-decoration: none;
  transition: background var(--transition-fast, 0.2s ease), transform var(--transition-fast, 0.2s ease);
  border: none;
  cursor: pointer;
  white-space: nowrap;
}
.page-products .btn:hover {
  background: var(--primary-blue-dark, #004CBF);
  transform: translateY(-1px);
}
.page-products .btn:focus-visible {
  outline: 2px solid var(--accent-orange, #FF6B35);
  outline-offset: 2px;
}

/* ===== 容器 ===== */
.page-products .container {
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding-left: var(--gap-lg, 24px);
  padding-right: var(--gap-lg, 24px);
}

/* ===== 响应式：移动端优先 ===== */
@media (max-width: 900px) {
  .page-products__title {
    font-size: calc(var(--h1, 3.5rem) * 0.72);
  }
  .page-products__subtitle {
    font-size: var(--body, 1rem);
  }
  .service-map__inner {
    flex-direction: column;
    gap: var(--gap-md, 16px);
  }
  .service-index {
    flex: none;
    position: relative;
    top: auto;
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: var(--gap-sm, 8px);
  }
  .service-index::-webkit-scrollbar {
    display: none;
  }
  .service-index__track {
    flex-direction: row;
    padding-left: 0;
    gap: var(--gap-sm, 8px);
    min-width: max-content;
  }
  .service-index__track::before {
    display: none;
  }
  .service-index__link {
    padding: var(--gap-sm, 8px) var(--gap-md, 16px);
    border-radius: 20px;
    background: var(--bg-white, #FFFFFF);
    box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,0.04));
    white-space: nowrap;
    font-size: var(--small, 0.875rem);
  }
  .service-index__link.active {
    background: var(--primary-blue, #0066FF);
    color: var(--bg-white, #FFFFFF);
  }
  .service-index__link.active .service-index__dot {
    background: var(--bg-white, #FFFFFF);
    border-color: var(--bg-white, #FFFFFF);
    box-shadow: none;
  }
  .service-index__dot {
    width: 8px;
    height: 8px;
    flex: 0 0 8px;
  }
  .service-panel__heading {
    font-size: calc(var(--h3, 1.75rem) * 0.85);
  }
  .service-panel__list {
    grid-template-columns: 1fr;
  }
  .featured-grid {
    grid-template-columns: 1fr;
    gap: var(--gap-md, 16px);
  }
  .featured-card {
    padding: var(--gap-md, 16px) var(--gap-md, 16px) var(--gap-lg, 24px);
  }
  .featured-card__heading {
    font-size: calc(var(--h3, 1.75rem) * 0.85);
  }
  .featured-services__title {
    font-size: calc(var(--h2, 2.5rem) * 0.76);
  }
  .steps {
    flex-direction: column;
    gap: var(--gap-md, 16px);
  }
  .step {
    flex-direction: row;
    align-items: stretch;
  }
  .step__media {
    width: 120px;
    aspect-ratio: 1 / 1;
    flex-shrink: 0;
  }
  .step__img {
    object-fit: cover;
  }
  .step__content {
    padding: var(--gap-md, 16px);
  }
  .step__number {
    font-size: 2rem;
  }
  .step__heading {
    font-size: calc(var(--h3, 1.75rem) * 0.8);
  }
  .related-links__title {
    font-size: calc(var(--h2, 2.5rem) * 0.76);
  }
  .related-links__grid {
    flex-direction: column;
    align-items: stretch;
  }
  .related-link {
    justify-content: center;
  }
  .page-products__decoration-img {
    width: 80px;
    height: 80px;
  }
}

@media (max-width: 480px) {
  .page-products__title {
    font-size: calc(var(--h1, 3.5rem) * 0.58);
  }
  .service-panel__summary {
    padding: var(--gap-sm, 8px) var(--gap-md, 16px);
  }
  .service-panel__content {
    padding: var(--gap-md, 16px);
  }
  .service-panel__icon {
    flex: 0 0 22px;
  }
  .service-panel__icon svg {
    width: 22px;
    height: 22px;
  }
  .service-panel__heading {
    font-size: calc(var(--h3, 1.75rem) * 0.7);
  }
  .step__media {
    width: 90px;
  }
  .step__number {
    font-size: 1.6rem;
  }
  .featured-card__badge {
    width: 36px;
    height: 36px;
  }
  .featured-card__badge svg {
    width: 24px;
    height: 24px;
  }
}

/* ===== 桌面微调 ===== */
@media (min-width: 901px) {
  .service-index__link {
    padding: var(--gap-sm, 8px) var(--gap-md, 16px);
    border-radius: var(--radius-sm, 4px);
  }
  .service-index__link.active {
    background: rgba(0, 102, 255, 0.08);
    color: var(--primary-blue, #0066FF);
  }
}