.page-products {
  --fn-gap: clamp(16px, 2.5vw, 28px);
  --fn-sect: clamp(40px, 6vw, 88px);
  --fn-card: var(--ink-mid);
  display: block;
}

/* 面包屑 */
.page-products .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: clamp(16px, 3vw, 28px) 0 0;
  font-size: var(--fs-1);
  letter-spacing: 0.08em;
  color: var(--muted);
}
.page-products .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}
.page-products .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
}
.page-products .breadcrumb a:hover {
  color: var(--gold-soft);
}
.page-products .breadcrumb [aria-current="page"] {
  color: var(--paper);
}

/* 首屏 */
.page-products .fn-hero {
  display: grid;
  gap: var(--fn-gap);
  align-items: center;
  padding: clamp(24px, 4vw, 48px) 0 clamp(28px, 5vw, 64px);
}
.page-products .fn-hero__copy {
  max-width: 760px;
}
.page-products .fn-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-7);
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin: 12px 0 18px;
  color: var(--paper);
}
.page-products .fn-hero__lead {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: var(--fs-4);
  line-height: 1.8;
}
.page-products .fn-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(18px, 3vw, 40px);
  margin-top: clamp(22px, 3vw, 36px);
  padding-top: clamp(16px, 2.5vw, 24px);
  border-top: 1px solid var(--line);
}
.page-products .fn-fact__num {
  display: block;
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-6);
  line-height: 1.1;
  color: var(--gold);
}
.page-products .fn-fact__num small {
  font-size: 0.55em;
  color: var(--gold-soft);
}
.page-products .fn-fact__label {
  display: block;
  margin-top: 6px;
  font-size: var(--fs-2);
  color: var(--muted);
}

/* 图片容器统一 */
.page-products .fn-hero__media,
.page-products .fn-ends__media,
.page-products .fn-cycle__media,
.page-products .fn-rules__media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--ink-mid);
}
.page-products .fn-hero__media img,
.page-products .fn-ends__media img,
.page-products .fn-cycle__media img,
.page-products .fn-rules__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-products .fn-hero__media {
  aspect-ratio: 16 / 9;
}

/* 横向主题带 */
.page-products .fn-band {
  margin: clamp(12px, 2.5vw, 28px) 0 clamp(8px, 2vw, 20px);
}
.page-products .fn-band__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.page-products .fn-band__item {
  background: var(--ink-mid);
}
.page-products .fn-band__item.is-current {
  background: linear-gradient(155deg, rgba(79, 179, 166, 0.24), rgba(18, 41, 63, 0.92));
}
.page-products .fn-band__link {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  min-height: 44px;
  padding: clamp(16px, 2.5vw, 26px);
  text-decoration: none;
  color: var(--paper);
  transition: background var(--dur) var(--ease);
}
.page-products .fn-band__link:hover {
  background: var(--ink-lift);
}
.page-products .fn-band__link:focus-visible {
  outline: 2px solid var(--jade);
  outline-offset: -2px;
}
.page-products .fn-band__num {
  font-family: var(--font-num);
  font-size: var(--fs-5);
  line-height: 1;
  color: var(--gold);
}
.page-products .fn-band__item.is-current .fn-band__num {
  color: var(--jade);
  font-weight: 700;
}
.page-products .fn-band__name {
  font-family: var(--font-display);
  font-size: var(--fs-4);
  color: var(--paper);
}
.page-products .fn-band__desc {
  font-size: var(--fs-2);
  line-height: 1.65;
  color: var(--muted);
}

/* 详情区通用 */
.page-products .fn-detail {
  padding: clamp(36px, 6vw, 76px) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 96px;
}
.page-products .fn-detail:target {
  border-top-color: var(--jade);
}
.page-products .fn-detail__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 3vw, 32px);
  align-items: start;
  margin-bottom: clamp(20px, 3vw, 36px);
}
.page-products .fn-detail__num {
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
  font-size: clamp(40px, 7vw, 72px);
  line-height: 0.95;
  color: var(--gold);
}
.page-products .fn-detail h2 {
  font-family: var(--font-display);
  font-size: var(--fs-6);
  line-height: 1.32;
  margin: 0 0 10px;
  color: var(--paper);
}
.page-products .fn-detail__head p {
  margin: 0;
  max-width: 68ch;
  color: var(--muted);
  line-height: 1.78;
}
.page-products .fn-detail .prose p {
  margin: 0 0 14px;
  color: var(--muted);
  line-height: 1.8;
}
.page-products .fn-detail .prose p:last-child {
  margin-bottom: 0;
}
.page-products .fn-detail .prose a {
  color: var(--jade);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-products .fn-detail .prose a:hover {
  color: var(--gold-soft);
}

/* 三步 */
.page-products .fn-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--fn-gap);
}
.page-products .fn-steps li {
  padding: clamp(18px, 2.5vw, 26px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  border-radius: var(--r-sm);
  background: var(--ink-mid);
}
.page-products .fn-steps li:last-child {
  border-left-color: var(--jade);
}
.page-products .fn-steps__num {
  display: block;
  font-size: var(--fs-1);
  letter-spacing: 0.16em;
  color: var(--gold-soft);
}
.page-products .fn-steps h3 {
  font-family: var(--font-display);
  font-size: var(--fs-4);
  margin: 10px 0 8px;
  color: var(--paper);
}
.page-products .fn-steps p {
  margin: 0;
  font-size: var(--fs-3);
  line-height: 1.72;
  color: var(--muted);
}

/* 双端对照 */
.page-products .fn-ends {
  display: grid;
  gap: var(--fn-gap);
  margin-top: clamp(28px, 4vw, 48px);
}
.page-products .fn-ends__item {
  margin: 0;
}
.page-products .fn-ends__media {
  aspect-ratio: 3 / 4;
}
.page-products .fn-ends__item--desk .fn-ends__media {
  aspect-ratio: 4 / 3;
}
.page-products .fn-ends figcaption {
  margin-top: 14px;
  font-size: var(--fs-2);
  line-height: 1.75;
  color: var(--muted);
}
.page-products .fn-ends figcaption strong {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-display);
  font-size: var(--fs-4);
  font-weight: 600;
  color: var(--paper);
}

/* 周期 */
.page-products .fn-cycle__grid {
  display: grid;
  gap: var(--fn-gap);
  align-items: center;
}
.page-products .fn-cycle__media {
  aspect-ratio: 1 / 1;
}
.page-products .fn-cycle__list {
  list-style: none;
  margin: clamp(24px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.page-products .fn-cycle__list li {
  padding: clamp(16px, 2.5vw, 26px);
  background: var(--ink-mid);
  font-size: var(--fs-3);
  line-height: 1.72;
  color: var(--muted);
}
.page-products .fn-cycle__list strong {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-display);
  font-size: var(--fs-4);
  font-weight: 600;
  color: var(--paper);
}

/* 规则阅读 */
.page-products .fn-rules__top {
  display: grid;
  gap: var(--fn-gap);
  align-items: center;
}
.page-products .fn-rules__media {
  aspect-ratio: 3 / 2;
}
.page-products .fn-rules__top strong {
  color: var(--jade);
  font-weight: 600;
}

/* 折叠面板 */
.page-products .fn-folds {
  margin-top: clamp(28px, 4vw, 48px);
}
.page-products .fold {
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--ink-mid);
  transition: border-color var(--dur) var(--ease);
}
.page-products .fold + .fold {
  margin-top: 12px;
}
.page-products .fold[open] {
  border-color: var(--jade);
}
.page-products .fold__summary {
  display: flex;
  align-items: baseline;
  gap: clamp(12px, 2vw, 20px);
  min-height: 44px;
  padding: clamp(16px, 2vw, 20px) clamp(16px, 2.5vw, 24px);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: var(--fs-4);
  color: var(--paper);
}
.page-products .fold__summary::-webkit-details-marker {
  display: none;
}
.page-products .fold__summary:focus-visible {
  outline: 2px solid var(--jade);
  outline-offset: -2px;
}
.page-products .fn-fold__num {
  font-family: var(--font-num);
  font-size: var(--fs-5);
  line-height: 1;
  color: var(--jade);
}
.page-products .fold__mark {
  margin-left: auto;
  color: var(--jade);
  font-size: var(--fs-4);
  line-height: 1;
}
.page-products .fold__mark::before {
  content: "+";
}
.page-products .fold[open] .fold__mark::before {
  content: "–";
}
.page-products .fold__body {
  padding: 0 clamp(16px, 2.5vw, 24px) clamp(18px, 2.5vw, 26px);
  color: var(--muted);
  line-height: 1.82;
  animation: fn-fold-in var(--dur) var(--ease);
}
.page-products .fold__body p {
  margin: 0 0 12px;
}
.page-products .fold__body p:last-child {
  margin-bottom: 0;
}
@keyframes fn-fold-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: none; }
}

/* 联系支持 */
.page-products .fn-support__grid {
  display: grid;
  gap: var(--fn-gap);
}
.page-products .fn-support__list {
  list-style: none;
  margin: 0;
  padding: clamp(18px, 2.5vw, 28px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--jade);
  border-radius: var(--r-lg);
  background: var(--ink-mid);
  display: grid;
  gap: 16px;
}
.page-products .fn-support__list li {
  display: grid;
  grid-template-columns: 4.5em minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  font-size: var(--fs-3);
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}
.page-products .fn-support__k {
  font-size: var(--fs-1);
  letter-spacing: 0.16em;
  color: var(--jade);
}

/* 场景 */
.page-products .fn-scenes {
  padding: var(--fn-sect) 0;
  border-top: 1px solid var(--line);
}
.page-products .fn-scenes h2 {
  font-family: var(--font-display);
  font-size: var(--fs-6);
  line-height: 1.32;
  margin: 12px 0 0;
  color: var(--paper);
}
.page-products .fn-scenes__lead {
  margin: 14px 0 0;
  max-width: 62ch;
  color: var(--muted);
  line-height: 1.78;
}
.page-products .fn-scenes__grid {
  display: grid;
  gap: var(--fn-gap);
  margin-top: clamp(22px, 3vw, 38px);
}
.page-products .fn-scene {
  padding: clamp(20px, 2.5vw, 30px);
  border: 1px solid var(--line);
  border-top: 3px solid var(--gold);
  border-radius: var(--r-sm);
  background: var(--ink-mid);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.page-products .fn-scene:nth-child(2) {
  border-top-color: var(--coral);
}
.page-products .fn-scene:nth-child(3) {
  border-top-color: var(--jade);
}
.page-products .fn-scene:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.3);
}
.page-products .fn-scene h3 {
  font-family: var(--font-display);
  font-size: var(--fs-4);
  line-height: 1.4;
  margin: 0 0 12px;
  color: var(--paper);
}
.page-products .fn-scene p {
  margin: 0 0 12px;
  font-size: var(--fs-3);
  line-height: 1.78;
  color: var(--muted);
}
.page-products .fn-scene__hint {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: var(--fs-2);
}
.page-products .fn-scene__hint a {
  color: var(--gold-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-products .fn-scene__hint a:hover {
  color: var(--gold);
}

/* 结尾行动区 */
.page-products .fn-cta {
  display: grid;
  gap: var(--fn-gap);
  margin-bottom: clamp(48px, 7vw, 96px);
  padding: clamp(26px, 4vw, 48px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(140deg, var(--ink-mid), var(--ink-deep));
}
.page-products .fn-cta h2 {
  font-family: var(--font-display);
  font-size: var(--fs-5);
  line-height: 1.4;
  margin: 0 0 10px;
  color: var(--paper);
}
.page-products .fn-cta p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}
.page-products .fn-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 断点 */
@media (min-width: 768px) {
  .page-products .fn-band__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-products .fn-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-products .fn-ends {
    grid-template-columns: minmax(0, 3fr) minmax(0, 4fr);
    align-items: start;
  }
  .page-products .fn-cycle__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-products .fn-scenes__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-products .fn-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-products .fn-hero {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(28px, 4vw, 56px);
  }
  .page-products .fn-cycle__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
  .page-products .fn-rules__top {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
  .page-products .fn-support__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .fn-scene,
  .page-products .fn-band__link {
    transition: none;
  }
  .page-products .fn-scene:hover {
    transform: none;
  }
  .page-products .fold__body {
    animation: none;
  }
}