.page-products {
  --prod-sticky-bg: #0F1F33;
  --prod-soft: rgba(168, 178, 193, 0.14);
}

/* ===== 首屏 ===== */
.page-products .prod-hero {
  position: relative;
  padding-block: clamp(28px, 5vw, 56px) clamp(44px, 7vw, 88px);
  isolation: isolate;
}

.page-products .prod-hero::before {
  content: "";
  position: absolute;
  inset: 0 calc(50% - 50vw) 0;
  z-index: -1;
  background:
    radial-gradient(900px 420px at 78% 6%, rgba(245, 166, 35, 0.16), transparent 62%),
    radial-gradient(720px 400px at 4% 92%, rgba(31, 78, 95, 0.55), transparent 68%),
    linear-gradient(180deg, #0B1219 0%, #13263D 100%);
  border-bottom: 1px solid var(--line);
  pointer-events: none;
}

.page-products .prod-hero::after {
  content: "";
  position: absolute;
  inset: 0 calc(50% - 50vw) 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(168, 178, 193, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(168, 178, 193, 0.07) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(120% 90% at 50% 10%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(120% 90% at 50% 10%, #000 30%, transparent 78%);
  pointer-events: none;
}

.page-products .breadcrumb {
  margin-bottom: clamp(22px, 4vw, 38px);
}

.page-products .prod-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 52px);
  align-items: start;
}

.page-products #prod-h1 {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-size: clamp(1.85rem, 5.4vw, 3.15rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--paper);
}

.page-products .prod-hero__text .lede {
  margin-top: 18px;
  max-width: 60ch;
}

.page-products .prod-stats {
  list-style: none;
  margin: clamp(26px, 4vw, 38px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

.page-products .prod-stats__item {
  background: rgba(19, 38, 61, 0.82);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-products .prod-stats__num {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
}

.page-products .prod-stats__lb {
  font-size: 0.8rem;
  color: var(--silver);
  line-height: 1.5;
}

.page-products .prod-hero__actions {
  margin-top: clamp(24px, 4vw, 34px);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .prod-hero__media {
  margin: 0;
  border: 3px solid var(--slate);
  box-shadow: var(--shadow-deep);
}

/* ===== 十二类目 ===== */
.page-products .cat-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-products .cat-card {
  position: relative;
  border-left: 5px solid var(--cat-accent, var(--gold));
  padding: 20px 20px 18px;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.page-products .cat-card:hover,
.page-products .cat-card:focus-within {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hard);
}

.page-products .cat-card__idx {
  display: block;
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--cat-accent, var(--gold));
  margin-bottom: 8px;
}

.page-products .cat-card .card__title {
  margin: 0 0 8px;
  font-size: 1.12rem;
}

.page-products .cat-card .card__text {
  margin: 0 0 14px;
  font-size: 0.92rem;
  line-height: 1.72;
}

.page-products .cat-card__scene {
  margin: 0;
  font-size: 0.78rem;
  color: var(--silver);
  padding-top: 10px;
  border-top: 1px dashed var(--line);
}

.page-products .cat-card__scene::before {
  content: "▸ ";
  color: var(--cat-accent, var(--gold));
}

.page-products .cat-grid__foot {
  margin: clamp(26px, 4vw, 36px) 0 0;
  font-size: 0.9rem;
  color: var(--silver);
  padding-left: 16px;
  border-left: 3px solid var(--gold);
}

.page-products .cat-grid__foot a {
  color: var(--gold-lt);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ===== 版本对照 ===== */
.page-products .ver-scroller {
  margin-top: clamp(24px, 4vw, 36px);
  overflow-x: auto;
  overflow-y: hidden;
  border: 1px solid var(--line);
  background: rgba(11, 18, 25, 0.55);
  box-shadow: var(--shadow-deep);
  scrollbar-width: thin;
}

.page-products .ver-scroller:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.page-products .ver-track {
  display: flex;
  align-items: stretch;
  min-width: max-content;
}

.page-products .ver-col {
  flex: 0 0 176px;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line-soft);
}

.page-products .ver-col--label {
  flex: 0 0 112px;
  position: sticky;
  left: 0;
  z-index: 2;
  background: var(--prod-sticky-bg);
  box-shadow: 14px 0 20px -16px rgba(0, 0, 0, 0.95);
}

.page-products .ver-head {
  height: 66px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 0 14px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  letter-spacing: 0.04em;
  color: var(--paper);
  border-bottom: 1px solid var(--line);
  background: rgba(19, 38, 61, 0.6);
}

.page-products .ver-col--label .ver-head {
  color: var(--silver);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
}

.page-products .ver-cell {
  height: 84px;
  padding: 12px 14px;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--silver);
  border-bottom: 1px solid var(--line-soft);
  display: flex;
  align-items: center;
}

.page-products .ver-col--label .ver-cell {
  color: rgba(168, 178, 193, 0.78);
  font-family: var(--font-head);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
}

.page-products .ver-col--current {
  background: rgba(245, 166, 35, 0.07);
  box-shadow: inset 0 0 0 2px var(--gold);
}

.page-products .ver-col--current .ver-head {
  background: var(--gold);
  color: var(--ink);
}

.page-products .ver-col--current .ver-cell {
  color: var(--paper);
}

.page-products .ver-current-tag {
  font-family: var(--font-head);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  padding: 2px 7px;
  background: var(--ink);
  color: var(--gold-lt);
}

.page-products .ver-after {
  margin-top: clamp(28px, 4vw, 40px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
  align-items: center;
}

.page-products .ver-advice {
  border: 1px solid var(--line);
  border-top: 4px solid var(--celadon);
  background: rgba(19, 38, 61, 0.5);
  padding: clamp(20px, 3vw, 28px);
}

.page-products .ver-advice__title {
  margin: 0 0 16px;
  font-size: 1.08rem;
}

.page-products .ver-advice__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-products .ver-advice__list li {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--silver);
  padding-left: 14px;
  border-left: 2px solid var(--line);
}

.page-products .ver-advice__list .mono {
  color: var(--celadon);
  margin-right: 6px;
}

.page-products .ver-advice__media {
  margin: 0;
}

/* ===== 测试版分支 ===== */
.page-products .lab-layout {
  align-items: start;
}

.page-products .lab-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  counter-reset: lab;
}

.page-products .lab-item {
  position: relative;
  padding: 22px 22px 22px 26px;
  background: var(--navy);
  border: 1px solid var(--line);
  border-left: 5px solid var(--teal);
}

.page-products .lab-item + .lab-item {
  margin-top: 16px;
}

.page-products .lab-item:nth-child(2) {
  border-left-color: var(--celadon);
  margin-left: 0;
}

.page-products .lab-item:nth-child(3) {
  border-left-color: var(--cinnabar);
}

.page-products .lab-item__code {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--gold);
  margin-bottom: 8px;
}

.page-products .lab-item__title {
  margin: 0 0 10px;
  font-size: 1.06rem;
}

.page-products .lab-item__text {
  margin: 0 0 12px;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--silver);
}

.page-products .lab-item__meta {
  margin: 0;
  font-size: 0.76rem;
  color: rgba(168, 178, 193, 0.72);
  letter-spacing: 0.02em;
}

.page-products .lab-side {
  display: grid;
  gap: 20px;
}

.page-products .lab-side .media-frame {
  margin: 0;
}

.page-products .lab-side__note {
  border: 1px dashed var(--line);
  background: rgba(19, 38, 61, 0.44);
  padding: 20px;
}

.page-products .lab-side__title {
  margin: 0 0 14px;
  font-size: 1rem;
}

.page-products .lab-side__list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
  font-size: 0.86rem;
  line-height: 1.74;
  color: var(--silver);
}

.page-products .lab-side__list a {
  color: var(--gold-lt);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .lab-side__foot {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 0.82rem;
  color: rgba(168, 178, 193, 0.8);
  line-height: 1.7;
}

/* ===== 服务流程 ===== */
.page-products .flow-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
}

.page-products .flow-steps {
  margin: 0;
  padding: 0 0 0 4px;
  list-style: none;
}

.page-products .flow-step {
  position: relative;
  padding: 0 0 30px 62px;
  border-left: 2px solid rgba(42, 59, 82, 0.4);
  margin-left: 21px;
}

.page-products .flow-step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-products .flow-step__num {
  position: absolute;
  left: -22px;
  top: -4px;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ink);
  background: var(--gold);
  border: 3px solid var(--paper);
  box-shadow: 4px 4px 0 rgba(11, 18, 25, 0.16);
}

.page-products .flow-step:last-child .flow-step__num {
  background: var(--celadon);
  color: var(--ink);
}

.page-products .flow-step__title {
  margin: 0 0 8px;
  font-size: 1.06rem;
  color: var(--ink);
}

.page-products .flow-step__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--slate);
}

.page-products .flow-aside {
  display: grid;
  gap: 18px;
}

.page-products .flow-aside .media-frame {
  margin: 0;
}

.page-products .flow-aside__contact {
  border: 2px solid var(--slate);
  background: var(--paper);
  padding: 20px;
  box-shadow: 6px 6px 0 rgba(42, 59, 82, 0.14);
}

.page-products .flow-aside__title {
  margin: 0 0 14px;
  font-size: 1rem;
  color: var(--ink);
}

.page-products .flow-aside .contact-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
  font-size: 0.86rem;
  color: var(--slate);
}

.page-products .flow-aside .contact-list .mono {
  color: var(--teal);
  font-weight: 700;
}

.page-products .flow-aside__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid rgba(42, 59, 82, 0.18);
  font-size: 0.8rem;
  line-height: 1.72;
  color: rgba(42, 59, 82, 0.82);
}

/* ===== 使用场景 ===== */
.page-products .scene-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
}

.page-products .scene-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-products .scene-item {
  border: 1px solid var(--line);
  border-bottom: 3px solid var(--slate);
  background: rgba(19, 38, 61, 0.5);
  padding: 18px 20px 20px;
  transition: border-bottom-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-products .scene-item:hover {
  transform: translateX(4px);
  border-bottom-color: var(--gold);
}

.page-products .scene-item .tag {
  margin-bottom: 10px;
}

.page-products .scene-item__title {
  margin: 0 0 8px;
  font-size: 1rem;
}

.page-products .scene-item__text {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.76;
  color: var(--silver);
}

.page-products .scene-media {
  margin: 0;
}

.page-products .prod-cta {
  margin-top: clamp(34px, 5vw, 56px);
  padding: clamp(24px, 4vw, 38px);
  border: 3px solid var(--gold);
  background:
    linear-gradient(135deg, rgba(245, 166, 35, 0.12), rgba(31, 78, 95, 0.28)),
    var(--ink);
  box-shadow: var(--shadow-hard);
  display: grid;
  gap: 22px;
}

.page-products .prod-cta__title {
  margin: 0 0 12px;
  font-size: clamp(1.2rem, 2.6vw, 1.6rem);
  color: var(--paper);
}

.page-products .prod-cta__text p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--silver);
  max-width: 62ch;
}

.page-products .prod-cta__text a {
  color: var(--gold-lt);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .prod-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== 响应式 ===== */
@media (min-width: 640px) {
  .page-products .cat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .prod-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .scene-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .prod-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-products .cat-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-products .cat-card:nth-child(even) {
    margin-top: 24px;
  }

  .page-products .cat-grid {
    padding-bottom: 24px;
  }

  .page-products .ver-after {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .page-products .lab-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-products .lab-item:nth-child(2) {
    margin-left: 30px;
  }

  .page-products .flow-layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-products .scene-layout {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  }

  .page-products .scene-media {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

@media (min-width: 1080px) {
  .page-products .prod-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: center;
  }

  .page-products .prod-hero__media {
    margin-top: -12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .cat-card,
  .page-products .scene-item {
    transition: none;
  }

  .page-products .cat-card:hover,
  .page-products .cat-card:focus-within,
  .page-products .scene-item:hover {
    transform: none;
  }
}