.page-products {
  --fnx-cut: 22px;
  position: relative;
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-products .fnx-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-block: clamp(16px, 3vw, 32px) clamp(12px, 2vw, 20px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--concrete);
}

.page-products .fnx-crumb a {
  color: var(--text-soft);
  text-decoration: none;
  transition: color 180ms var(--ease);
}

.page-products .fnx-crumb a:hover {
  color: var(--lime);
}

/* ---------- 首屏 ---------- */
.page-products .fnx-hero {
  position: relative;
  padding-block: clamp(18px, 3vw, 42px) clamp(26px, 4vw, 54px);
  border-top: 1px solid var(--line-soft);
  isolation: isolate;
}

.page-products .fnx-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: 88px 88px;
  opacity: 0.45;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 88%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 88%);
  pointer-events: none;
}

.page-products .fnx-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 clamp(14px, 2vw, 22px);
  padding: 6px 12px 6px 10px;
  border: 1px solid var(--line);
  background: rgba(200, 255, 62, 0.06);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-products .fnx-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--stand-red);
  animation: fnxPulse 2.4s var(--ease) infinite;
}

@keyframes fnxPulse {
  0% { box-shadow: 0 0 0 0 rgba(228, 64, 47, 0.55); }
  70% { box-shadow: 0 0 0 9px rgba(228, 64, 47, 0); }
  100% { box-shadow: 0 0 0 0 rgba(228, 64, 47, 0); }
}

.page-products .fnx-title {
  margin: 0 0 clamp(16px, 2.4vw, 26px);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 8vw, 82px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--ice);
  text-wrap: balance;
  max-width: 20ch;
}

.page-products .fnx-title em {
  font-style: normal;
  color: var(--lime);
}

.page-products .fnx-lede {
  margin: 0 0 clamp(20px, 2.6vw, 30px);
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-soft);
}

.page-products .fnx-meta {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
}

.page-products .fnx-meta li {
  padding: 5px 11px;
  border: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--concrete);
}

.page-products .fnx-meta strong {
  color: var(--ice);
  font-weight: 600;
}

/* ---------- 横幅 ---------- */
.page-products .fnx-banner {
  margin: 0 auto clamp(30px, 4.5vw, 56px);
}

.page-products .fnx-banner img,
.page-products .fnx-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--stand);
  filter: saturate(0.94) contrast(1.04);
}

.page-products .fnx-banner figcaption {
  margin-top: 12px;
  padding-left: 12px;
  border-left: 2px solid var(--lime);
  font-size: 13px;
  line-height: 1.65;
  color: var(--concrete);
}

/* ---------- 索引 + 内容 主体 ---------- */
.page-products .fnx-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 48px);
  align-items: start;
  padding-bottom: clamp(44px, 6vw, 92px);
}

.page-products .fnx-rail {
  position: relative;
  border: 1px solid var(--line);
  background: linear-gradient(170deg, rgba(27, 35, 80, 0.92), rgba(14, 20, 48, 0.72));
  padding: 14px;
}

.page-products .fnx-rail::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: var(--fnx-cut);
  height: var(--fnx-cut);
  background: var(--lime);
  clip-path: polygon(100% 0, 100% 100%, 0 0);
  opacity: 0.85;
}

.page-products .fnx-rail-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-products .fnx-rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-products .fnx-rail-list li {
  flex: 0 0 auto;
}

.page-products .fnx-rail-list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid transparent;
  color: var(--text-soft);
  text-decoration: none;
  font-size: 13px;
  white-space: nowrap;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-products .fnx-rail-list a:hover,
.page-products .fnx-rail-list a:focus-visible {
  color: var(--ice);
  border-color: var(--line);
  background: rgba(42, 53, 102, 0.38);
}

.page-products .fnx-rail-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-products .fnx-flow {
  display: grid;
  gap: clamp(30px, 4.5vw, 60px);
  min-width: 0;
}

/* ---------- 章节块 ---------- */
.page-products .fnx-block {
  position: relative;
  min-width: 0;
  padding-top: clamp(20px, 3vw, 34px);
  border-top: 1px solid var(--line);
  scroll-margin-top: 120px;
}

.page-products .exhibit-mark {
  margin: 0 0 clamp(10px, 1.6vw, 16px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--concrete);
}

.page-products .exhibit-mark .fnx-no {
  margin-right: 10px;
  color: var(--lime);
}

.page-products .fnx-h2 {
  margin: 0 0 clamp(16px, 2vw, 22px);
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(25px, 4.4vw, 42px);
  line-height: 1.06;
  letter-spacing: -0.015em;
  color: var(--ice);
}

.page-products .fnx-prose {
  min-width: 0;
  max-width: 60ch;
}

.page-products .fnx-prose p {
  margin: 0 0 1em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-soft);
}

.page-products .fnx-prose p:last-child {
  margin-bottom: 0;
}

.page-products .fnx-prose strong {
  color: var(--ice);
  font-weight: 600;
}

.page-products .fnx-prose--lead {
  margin-bottom: clamp(18px, 2.4vw, 26px);
}

.page-products .fnx-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.4vw, 30px);
  align-items: start;
}

/* ---------- 切角说明面板 ---------- */
.page-products .fnx-cut {
  position: relative;
  padding: clamp(16px, 2.2vw, 24px);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(27, 35, 80, 0.95), rgba(14, 20, 48, 0.82));
  clip-path: polygon(0 0, calc(100% - var(--fnx-cut)) 0, 100% var(--fnx-cut), 100% 100%, 0 100%);
  min-width: 0;
}

.page-products .fnx-cut-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-products .fnx-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .fnx-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-soft);
}

.page-products .fnx-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--amber);
}

.page-products .fnx-list strong {
  color: var(--ice);
  font-weight: 600;
}

/* ---------- 图片 ---------- */
.page-products .fnx-figure {
  margin: 0;
  min-width: 0;
}

.page-products .fnx-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  line-height: 1.65;
  color: var(--concrete);
}

.page-products .fnx-figure--wide,
.page-products .fnx-figure--scene {
  margin-top: clamp(20px, 2.6vw, 30px);
}

.page-products .fnx-figure--scene {
  max-width: 720px;
}

/* ---------- 版本时间轴 ---------- */
.page-products .fnx-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .fnx-tl-item {
  position: relative;
  padding: 0 0 clamp(18px, 2.4vw, 26px) clamp(22px, 3vw, 34px);
  border-left: 1px solid var(--line);
}

.page-products .fnx-tl-item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-products .fnx-tl-item::before {
  content: "";
  position: absolute;
  left: -4.5px;
  top: 5px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 3px rgba(255, 138, 61, 0.18);
}

.page-products .fnx-tl-item:last-child::before {
  background: var(--lime);
  box-shadow: 0 0 0 3px rgba(200, 255, 62, 0.18);
}

.page-products .fnx-tl-ver {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--lime);
}

.page-products .fnx-tl-text {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-soft);
}

/* ---------- 使用场景卡片 ---------- */
.page-products .fnx-scenes {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-products .fnx-scene {
  padding: clamp(16px, 2vw, 22px);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--amber);
  background: rgba(27, 35, 80, 0.5);
  transition: transform 200ms var(--ease), border-left-color 200ms var(--ease), background 200ms var(--ease);
}

.page-products .fnx-scene:hover {
  transform: translateY(-4px);
  border-left-color: var(--lime);
  background: rgba(27, 35, 80, 0.75);
}

.page-products .fnx-scene-tag {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ice);
}

.page-products .fnx-scene-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-soft);
}

/* ---------- 相关页面 ---------- */
.page-products .fnx-next {
  display: grid;
  gap: 0;
  margin-top: clamp(24px, 3vw, 36px);
  padding-top: clamp(18px, 2.4vw, 26px);
  border-top: 1px solid var(--line);
}

.page-products .fnx-next-link {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
  color: var(--ice);
  text-decoration: none;
  font-size: 15px;
  transition: color 180ms var(--ease);
}

.page-products .fnx-next-link:hover,
.page-products .fnx-next-link:focus-visible {
  color: var(--lime);
}

.page-products .fnx-next-link span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--concrete);
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-products .fnx-scenes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-products .fnx-cols {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-products .fnx-cols--wide-text {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  }

  .page-products .fnx-cols--media-first {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
  }

  .page-products .fnx-cols--media-first > .fnx-figure {
    order: -1;
  }
}

/* ---------- 桌面：粘性索引 ---------- */
@media (min-width: 1024px) {
  .page-products .fnx-shell {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 72px);
  }

  .page-products .fnx-rail {
    position: sticky;
    top: 96px;
    padding: 18px 16px;
  }

  .page-products .fnx-rail-list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
  }

  .page-products .fnx-rail-list a {
    white-space: normal;
    padding: 9px 10px;
    border-left: 2px solid transparent;
  }

  .page-products .fnx-rail-list a:hover,
  .page-products .fnx-rail-list a:focus-visible {
    border-left-color: var(--lime);
  }
}

@media (min-width: 1200px) {
  .page-products .fnx-scenes {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-products .fnx-dot {
    animation: none;
  }

  .page-products .fnx-scene,
  .page-products .fnx-rail-list a,
  .page-products .fnx-next-link {
    transition: opacity 160ms linear;
  }

  .page-products .fnx-scene:hover {
    transform: none;
  }
}