.page-products {
  --pf-pad: clamp(52px, 9vw, 100px);
  background: var(--fx-paper);
  color: var(--fx-black);
}

.page-products .pf-crumb {
  margin: 0 0 20px;
}

.page-products .pf-crumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--fx-on-dark);
}

.page-products .pf-crumb__item:not(:last-child)::after {
  content: "/";
  margin-left: 10px;
  color: rgba(250, 246, 239, 0.42);
}

.page-products .pf-crumb__link {
  color: var(--fx-paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(250, 246, 239, 0.42);
  padding-bottom: 1px;
}

.page-products .pf-crumb__link:hover,
.page-products .pf-crumb__link:focus-visible {
  color: var(--fx-sand);
  border-bottom-color: var(--fx-sand);
}

/* 首屏 */
.page-products .pf-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--fx-ink);
  color: var(--fx-paper);
}

.page-products .pf-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-products .pf-hero__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.36;
}

.page-products .pf-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(185deg, rgba(14, 34, 56, 0.8) 0%, rgba(14, 34, 56, 0.97) 62%);
}

.page-products .pf-hero__inner {
  display: grid;
  gap: clamp(30px, 6vw, 52px);
  padding-block: clamp(42px, 8vw, 84px);
  align-items: center;
}

.page-products .pf-hero__title {
  margin: 14px 0 0;
  font-size: clamp(33px, 7.2vw, 64px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--fx-paper);
}

.page-products .pf-hero__lede {
  max-width: 34em;
  margin: 20px 0 0;
  font-size: clamp(15px, 2.2vw, 17.5px);
  line-height: 1.85;
  color: var(--fx-on-dark);
}

.page-products .pf-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-products .pf-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .pf-hero__tags li {
  padding: 6px 11px;
  border: 1px solid rgba(250, 246, 239, 0.32);
  border-radius: 2px;
  font-family: var(--fx-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--fx-paper);
}

.page-products .pf-hero__device {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.page-products .pf-hero__caption {
  max-width: 26em;
  margin: 0;
  font-family: var(--fx-font-serif);
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  text-align: center;
  color: rgba(250, 246, 239, 0.62);
}

/* 纯 CSS 手机轮廓 */
.page-products .pf-phone {
  width: min(248px, 66vw);
  aspect-ratio: 9 / 18.4;
  padding: 10px;
  border-radius: 34px;
  background: linear-gradient(158deg, #27435f 0%, #0a1727 62%);
  border: 1px solid rgba(250, 246, 239, 0.28);
  box-shadow: 0 28px 62px rgba(0, 0, 0, 0.46), inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.page-products .pf-phone__screen {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: 100%;
  padding: 30px 15px 16px;
  border-radius: 26px;
  background: var(--fx-paper-3);
  overflow: hidden;
}

.page-products .pf-phone__screen::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 6px;
  border-radius: 99px;
  background: rgba(14, 34, 56, 0.2);
}

.page-products .pf-phone__bar {
  display: block;
  height: 8px;
  border-radius: 99px;
  background: rgba(14, 34, 56, 0.14);
}

.page-products .pf-phone__bar--title {
  height: 15px;
  width: 64%;
  border-radius: 3px;
  background: var(--fx-orange);
}

.page-products .pf-phone__bar--half {
  width: 48%;
}

.page-products .pf-phone__chip {
  display: block;
  height: 30px;
  border-radius: 4px;
  border-left: 3px solid var(--fx-teal);
  background: rgba(15, 138, 122, 0.14);
}

.page-products .pf-phone__cta {
  margin-top: auto;
  display: grid;
  place-items: center;
  height: 36px;
  border-radius: 3px;
  background: var(--fx-orange);
  color: var(--fx-paper);
  font-family: var(--fx-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
}

/* 通用章节题头 */
.page-products .pf-head {
  max-width: 44em;
  margin-bottom: clamp(26px, 4.5vw, 42px);
  color: var(--fx-ink);
}

.page-products .pf-head .fx-title {
  margin: 10px 0 0;
  color: var(--fx-ink);
  font-size: clamp(26px, 4.4vw, 46px);
  line-height: 1.16;
}

.page-products .pf-head .fx-lede {
  margin: 16px 0 0;
  color: var(--fx-mist);
  font-size: 15.5px;
  line-height: 1.85;
}

/* 三条安装路径 */
.page-products .pf-paths__grid {
  display: grid;
  gap: 16px;
}

.page-products .pf-path {
  position: relative;
  padding: 24px 20px 22px;
  background: var(--fx-paper-3);
  border-top: 4px solid var(--fx-orange);
  box-shadow: 0 1px 0 var(--fx-line), 0 22px 40px -32px rgba(14, 34, 56, 0.5);
}

.page-products .pf-path:nth-child(2) {
  border-top-color: var(--fx-teal);
}

.page-products .pf-path:nth-child(3) {
  border-top-color: var(--fx-indigo);
}

.page-products .pf-path__no {
  display: block;
  margin-bottom: 10px;
  font-family: var(--fx-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--fx-orange-deep);
}

.page-products .pf-path h3 {
  margin: 0 0 8px;
  font-size: 19px;
  line-height: 1.35;
  color: var(--fx-ink);
}

.page-products .pf-path p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--fx-black);
}

.page-products .pf-steps {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: pfstep;
}

.page-products .pf-steps li {
  position: relative;
  padding-left: 28px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--fx-black);
  counter-increment: pfstep;
}

.page-products .pf-steps li + li {
  margin-top: 9px;
}

.page-products .pf-steps li::before {
  content: counter(pfstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--fx-font-mono);
  font-size: 11px;
  color: var(--fx-teal);
}

.page-products .pf-path__done {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed var(--fx-line-strong);
  font-size: 13px;
  line-height: 1.6;
  font-weight: 600;
  color: var(--fx-teal);
}

/* 图文块 */
.page-products .pf-shot {
  display: grid;
  gap: 20px;
  margin: clamp(28px, 5vw, 46px) 0 0;
  padding: 22px;
  background: var(--fx-paper-2);
  align-items: center;
}

.page-products .pf-shot__media {
  max-width: 280px;
  width: 100%;
  justify-self: center;
}

.page-products .pf-shot__media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 2px;
}

.page-products .pf-shot__text p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--fx-black);
}

.page-products .pf-wide {
  margin: clamp(28px, 5vw, 46px) 0 0;
}

.page-products .pf-wide img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 2px;
}

.page-products .pf-wide figcaption {
  margin-top: 12px;
  font-family: var(--fx-font-serif);
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.03em;
  color: var(--fx-mist);
}

.page-products .pf-wide--dark figcaption {
  color: rgba(250, 246, 239, 0.62);
}

/* 安装前检查 */
.page-products .pf-check__grid {
  display: grid;
  gap: clamp(28px, 5vw, 46px);
}

.page-products .pf-checks {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--fx-line-strong);
}

.page-products .pf-checks li {
  display: grid;
  gap: 5px;
  padding: 15px 0;
  border-bottom: 1px solid var(--fx-line);
}

.page-products .pf-checks__k {
  font-family: var(--fx-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--fx-orange-deep);
}

.page-products .pf-checks__v {
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--fx-black);
}

.page-products .pf-check__panel-title {
  margin: 0 0 14px;
  font-size: 17px;
  color: var(--fx-ink);
}

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

.page-products .pf-sys li {
  display: grid;
  gap: 3px;
  padding: 15px 17px;
  background: var(--fx-paper-3);
  border-left: 4px solid var(--fx-teal);
}

.page-products .pf-sys li:nth-child(2) {
  border-left-color: var(--fx-orange);
}

.page-products .pf-sys li:nth-child(3) {
  border-left-color: var(--fx-indigo);
}

.page-products .pf-sys__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--fx-ink);
}

.page-products .pf-sys__ver {
  font-size: 12.5px;
  color: var(--fx-teal);
}

.page-products .pf-sys__note {
  font-size: 13px;
  line-height: 1.65;
  color: var(--fx-mist);
}

.page-products .pf-figure {
  margin: 18px 0 0;
}

.page-products .pf-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 2px;
}

.page-products .pf-figure figcaption {
  margin-top: 10px;
  font-family: var(--fx-font-serif);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--fx-mist);
}

/* 换机五步 */
.page-products .pf-track {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 24px;
}

.page-products .pf-track__item {
  position: relative;
}

.page-products .pf-track__no {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 2px solid var(--fx-orange);
  background: var(--fx-paper-3);
  font-family: var(--fx-font-mono);
  font-size: 12px;
  color: var(--fx-orange-deep);
}

.page-products .pf-track__item h3 {
  margin: 12px 0 6px;
  font-size: 16.5px;
  line-height: 1.4;
  color: var(--fx-ink);
}

.page-products .pf-track__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--fx-black);
}

/* 平台功能研究板 */
.page-products .pf-board .pf-head {
  color: var(--fx-paper);
}

.page-products .pf-board .pf-head .fx-title {
  color: var(--fx-paper);
}

.page-products .pf-board .pf-head .fx-lede {
  color: var(--fx-on-dark);
}

.page-products .pf-board .fx-eyebrow {
  color: var(--fx-sand);
}

.page-products .pf-board__grid {
  display: grid;
  gap: 1px;
  background: rgba(250, 246, 239, 0.18);
}

.page-products .pf-feature {
  padding: 22px 20px 24px;
  background: var(--fx-ink);
}

.page-products .pf-feature__tag {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--fx-teal);
}

.page-products .pf-feature h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  line-height: 1.4;
  color: var(--fx-paper);
}

.page-products .pf-feature p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--fx-on-dark);
}

.page-products .pf-duel {
  display: grid;
  gap: 2px;
  margin-top: 26px;
  background: rgba(250, 246, 239, 0.2);
}

.page-products .pf-duel__side {
  padding: 22px 20px 24px;
  background: rgba(250, 246, 239, 0.05);
}

.page-products .pf-duel__side--home {
  border-top: 3px solid var(--fx-teal);
}

.page-products .pf-duel__side--away {
  border-top: 3px solid var(--fx-orange);
}

.page-products .pf-duel__label {
  margin: 0 0 14px;
  font-family: var(--fx-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--fx-paper);
}

.page-products .pf-duel__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-products .pf-duel__list li {
  display: grid;
  gap: 3px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(250, 246, 239, 0.14);
}

.page-products .pf-duel__list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-products .pf-duel__k {
  font-size: 14px;
  font-weight: 700;
  color: var(--fx-paper);
}

.page-products .pf-duel__v {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--fx-on-dark);
}

/* 版本与兼容 */
.page-products .pf-bands {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-products .pf-bands__item {
  display: grid;
  gap: 10px;
  padding: 20px 20px 22px;
  background: var(--fx-paper-3);
  border-left: 5px solid var(--fx-sand);
  box-shadow: 0 1px 0 var(--fx-line);
}

.page-products .pf-bands__item:nth-child(2) {
  border-left-color: var(--fx-indigo);
}

.page-products .pf-bands__item:nth-child(3) {
  border-left-color: var(--fx-teal);
}

.page-products .pf-bands__item:nth-child(4) {
  border-left-color: var(--fx-wine);
}

.page-products .pf-bands__tag {
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--fx-orange-deep);
}

.page-products .pf-bands__body h3 {
  margin: 0 0 6px;
  font-size: 16.5px;
  line-height: 1.4;
  color: var(--fx-ink);
}

.page-products .pf-bands__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--fx-black);
}

/* 症状自查 */
.page-products .pf-trouble__table {
  border-top: 2px solid var(--fx-ink);
}

.page-products .pf-trouble__head {
  display: none;
}

.page-products .pf-trouble__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .pf-trouble__row {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--fx-line);
}

.page-products .pf-trouble__symptom {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--fx-ink);
}

.page-products .pf-trouble__cause,
.page-products .pf-trouble__fix {
  font-size: 14px;
  line-height: 1.75;
  color: var(--fx-black);
}

.page-products .pf-trouble__fix {
  color: var(--fx-teal);
}

.page-products .pf-trouble__row [data-label]::before {
  content: attr(data-label) "：";
  font-family: var(--fx-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--fx-orange-deep);
}

.page-products .pf-trouble__symptom[data-label]::before,
.page-products .pf-trouble__fix[data-label]::before {
  font-weight: 400;
}

/* 收束 */
.page-products .pf-next {
  display: grid;
  gap: 18px;
  margin-top: clamp(28px, 5vw, 44px);
  padding: 26px 22px;
  background: var(--fx-ink);
  color: var(--fx-paper);
}

.page-products .pf-next__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--fx-on-dark);
}

.page-products .pf-next__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-products .pf-next .fx-link {
  color: var(--fx-sand);
}

/* 响应式 */
@media (min-width: 560px) {
  .page-products .pf-checks li {
    grid-template-columns: 120px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }

  .page-products .pf-shot {
    grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
  }

  .page-products .pf-shot__media {
    max-width: 240px;
    justify-self: start;
  }

  .page-products .pf-bands__item {
    grid-template-columns: 92px minmax(0, 1fr);
    align-items: start;
    gap: 18px;
  }
}

@media (min-width: 760px) {
  .page-products .pf-paths__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

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

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

  .page-products .pf-next {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.9fr);
    align-items: center;
    padding: 30px 28px;
  }
}

@media (min-width: 860px) {
  .page-products .pf-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }

  .page-products .pf-track {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 18px;
  }

  .page-products .pf-track::before {
    content: "";
    position: absolute;
    top: 18px;
    left: 4%;
    right: 4%;
    height: 2px;
    background: linear-gradient(90deg, var(--fx-orange), var(--fx-teal));
  }

  .page-products .pf-track__no {
    position: relative;
    z-index: 1;
  }

  .page-products .pf-check__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
  }
}

@media (min-width: 820px) {
  .page-products .pf-trouble__head {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.4fr);
    gap: 22px;
    padding: 12px 0;
    border-bottom: 1px solid var(--fx-line-strong);
    font-family: var(--fx-font-mono);
    font-size: 11.5px;
    letter-spacing: 0.12em;
    color: var(--fx-mist);
  }

  .page-products .pf-trouble__row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.4fr);
    gap: 22px;
    align-items: start;
    padding: 18px 0;
  }

  .page-products .pf-trouble__row [data-label]::before {
    display: none;
  }
}

@media (min-width: 1024px) {
  .page-products .pf-board__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}
<<<END>>>