.page-products {
  --fx-edge: 1px solid var(--mist);
}

/* ---------- 首屏 ---------- */
.page-products .fx-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink-900);
  color: var(--paper);
  padding: 28px 0 56px;
}

.page-products .fx-hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(112deg, transparent 0 50%, rgba(15, 191, 168, .30) 50% 51.4%, transparent 51.4%),
    linear-gradient(112deg, transparent 0 62%, rgba(143, 227, 214, .10) 62% 100%);
}

.page-products .fx-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(143, 227, 214, .45) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: .22;
  -webkit-mask-image: linear-gradient(112deg, transparent 42%, #000 78%);
  mask-image: linear-gradient(112deg, transparent 42%, #000 78%);
}

.page-products .fx-hero__inner {
  position: relative;
  z-index: 1;
}

.page-products .fx-crumbs,
.page-products .fx-crumbs a {
  color: var(--teal-soft);
  font-size: 13px;
}

.page-products .fx-crumbs .breadcrumbs__sep {
  color: rgba(143, 227, 214, .5);
  margin: 0 6px;
}

.page-products .fx-hero__grid {
  margin-top: 30px;
  display: grid;
  gap: 34px;
}

.page-products .fx-eyebrow {
  color: var(--teal);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  margin: 0;
}

.page-products .fx-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(30px, 7vw, 48px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.025em;
  color: #fff;
}

.page-products .fx-hl {
  color: var(--teal);
  display: inline-block;
  position: relative;
}

.page-products .fx-hl::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -.08em;
  height: 3px;
  background: var(--orange);
}

.page-products .fx-hero .lede {
  margin: 22px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(246, 248, 250, .82);
  max-width: 46ch;
}

.page-products .fx-hero__actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .fx-hero__aside {
  border: 1px solid rgba(143, 227, 214, .32);
  background: rgba(16, 58, 99, .62);
  padding: 22px 20px 18px;
  box-shadow: var(--shadow-lift);
}

.page-products .fx-aside__label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--teal-soft);
}

.page-products .fx-facts {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-products .fx-facts__row {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 11px 0;
  border-top: 1px solid rgba(143, 227, 214, .18);
}

.page-products .fx-facts__row:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-products .fx-facts dt {
  font-size: 22px;
  font-weight: 700;
  color: var(--orange);
  line-height: 1;
}

.page-products .fx-facts dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(246, 248, 250, .78);
}

/* ---------- 主体骨架 ---------- */
.page-products .fx-body {
  padding-bottom: 70px;
}

.page-products .fx-body__grid {
  display: grid;
  gap: 0;
}

.page-products .fx-index {
  display: none;
}

/* ---------- 章节头 ---------- */
.page-products .fx-chapter {
  padding: 46px 0 8px;
  border-top: 1px solid var(--mist);
}

.page-products .fx-chapter:first-child {
  border-top: 0;
}

.page-products .fx-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px 16px;
  align-items: start;
  margin-bottom: 28px;
}

.page-products .fx-head__num {
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.05em;
  color: var(--teal);
  padding-top: 5px;
}

.page-products .fx-head h2 {
  margin: 0;
  font-size: clamp(22px, 4.4vw, 28px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.012em;
  color: var(--ink-900);
}

.page-products .fx-head__text p {
  margin: 10px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-ink);
  max-width: 60ch;
}

/* ---------- 图片 ---------- */
.page-products .fx-figure {
  margin: 0 0 30px;
  border: var(--fx-edge);
  background: var(--mist);
  box-shadow: var(--shadow-lift);
}

.page-products .fx-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .fx-figure .media-frame__caption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--ink-700);
  background: var(--paper);
  border-top: var(--fx-edge);
}

.page-products .fx-figure--steps {
  margin-top: 34px;
}

/* ---------- 模块列表 ---------- */
.page-products .fx-mods {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .fx-mod {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  background: var(--paper);
  border: var(--fx-edge);
  border-left: 3px solid var(--teal);
  padding: 20px 18px;
  box-shadow: var(--shadow-lift);
  transition: box-shadow var(--dur) var(--ease), border-left-color var(--dur) var(--ease);
}

.page-products .fx-mod:hover {
  box-shadow: var(--shadow-lift-hover);
  border-left-color: var(--orange);
}

.page-products .fx-mod__num {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--ink-900);
  letter-spacing: -.04em;
  padding-top: 2px;
}

.page-products .fx-mod__body h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  color: var(--ink-900);
  letter-spacing: -.01em;
}

.page-products .fx-mod__body p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-ink);
}

/* ---------- 导出步骤 ---------- */
.page-products .fx-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .fx-step {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 30px;
}

.page-products .fx-step::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 48px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--teal), rgba(15, 191, 168, .12));
}

.page-products .fx-step:last-child {
  padding-bottom: 0;
}

.page-products .fx-step:last-child::before {
  display: none;
}

.page-products .fx-step__marker {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: var(--ink-900);
  color: var(--teal-soft);
  font-size: 15px;
  font-weight: 700;
  border-radius: 2px;
}

.page-products .fx-step__body h3 {
  margin: 8px 0 0;
  font-size: 19px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--ink-900);
  letter-spacing: -.01em;
}

.page-products .fx-step__body > p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-ink);
  max-width: 58ch;
}

.page-products .fx-step__check {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  color: var(--ink-700) !important;
}

.page-products .fx-step__check .tag {
  flex: none;
  font-size: 12px;
}

.page-products .fx-step__more {
  margin-top: 14px;
  border-top: 1px dashed var(--mist);
  padding-top: 10px;
  max-width: 58ch;
}

.page-products .fx-step__more summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  color: var(--orange-deep);
  list-style: none;
}

.page-products .fx-step__more summary::-webkit-details-marker {
  display: none;
}

.page-products .fx-step__more summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
}

.page-products .fx-step__more[open] summary::before {
  content: "–";
}

.page-products .fx-step__more p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-ink);
}

/* ---------- 筛选按钮 ---------- */
.page-products .fx-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 26px;
}

.page-products .fx-switch .filter-btn {
  font: inherit;
  font-size: 14px;
  line-height: 1.2;
  padding: 10px 16px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--text-ink);
  border-radius: 2px;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.page-products .fx-switch .filter-btn:hover {
  border-color: var(--teal);
}

.page-products .fx-switch .filter-btn[aria-pressed="true"] {
  border-color: var(--orange);
  background: var(--teal-soft);
  color: var(--ink-900);
  font-weight: 700;
}

.page-products [data-filtered-out],
.page-products [hidden] {
  display: none !important;
}

/* ---------- 版本对照面板 ---------- */
.page-products .fx-panels {
  display: grid;
  gap: 20px;
  margin-bottom: 30px;
}

.page-products .fx-panel {
  background: var(--paper);
  border: var(--fx-edge);
  border-top: 4px solid var(--ink-700);
  padding: 22px 20px;
  box-shadow: var(--shadow-lift);
}

.page-products .fx-panel--main {
  border-top-color: var(--orange);
}

.page-products .fx-panel h3 {
  margin: 12px 0 0;
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -.012em;
  color: var(--ink-900);
}

.page-products .fx-panel__lead {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-products .fx-specs {
  margin: 18px 0 0;
  display: grid;
  gap: 0;
}

.page-products .fx-specs > div {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 14px;
  padding: 11px 0;
  border-top: 1px dashed var(--mist);
}

.page-products .fx-specs dt {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.7;
  color: var(--ink-900);
  letter-spacing: .02em;
}

.page-products .fx-specs dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-ink);
}

/* ---------- 场景 ---------- */
.page-products .fx-scenes {
  display: grid;
  gap: 18px;
}

.page-products .fx-scene {
  background: var(--paper);
  border: var(--fx-edge);
  border-left: 3px solid var(--ink-700);
  padding: 22px 20px;
  box-shadow: var(--shadow-lift);
}

.page-products .fx-scene__kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--orange-deep);
  font-weight: 700;
}

.page-products .fx-scene h3 {
  margin: 10px 0 0;
  font-size: 19px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--ink-900);
  letter-spacing: -.01em;
}

.page-products .fx-scene p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-ink);
}

.page-products .fx-scene__path {
  font-family: var(--font-mono);
  font-size: 13px !important;
  line-height: 1.7 !important;
  color: var(--ink-700) !important;
  border-top: 1px dashed var(--mist);
  padding-top: 12px;
}

/* ---------- 双路径 ---------- */
.page-products .fx-paths {
  display: grid;
  gap: 18px;
  margin-bottom: 30px;
}

.page-products .fx-path {
  padding: 22px 20px;
  border: var(--fx-edge);
  background: var(--mist);
}

.page-products .fx-path--back {
  background: var(--ink-900);
  border-color: var(--ink-900);
}

.page-products .fx-path__label {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-900);
}

.page-products .fx-path--back .fx-path__label {
  color: var(--teal);
}

.page-products .fx-path__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .fx-path__list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-ink);
}

.page-products .fx-path--back .fx-path__list li {
  color: rgba(246, 248, 250, .82);
}

.page-products .fx-path__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 10px;
  height: 2px;
  background: var(--teal);
}

.page-products .fx-path--back .fx-path__list li::before {
  background: var(--orange);
}

/* ---------- 终端 ---------- */
.page-products .fx-devices {
  list-style: none;
  margin: 0 0 30px;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-products .fx-device {
  background: var(--paper);
  border: var(--fx-edge);
  padding: 20px 18px;
  box-shadow: var(--shadow-lift);
}

.page-products .fx-device__name {
  margin: 0;
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--ink-900);
  background: var(--teal-soft);
  padding: 4px 10px;
  border-radius: 2px;
}

.page-products .fx-device h3 {
  margin: 14px 0 0;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--ink-900);
  letter-spacing: -.01em;
}

.page-products .fx-device p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-ink);
}

/* ---------- 尾栏 ---------- */
.page-products .fx-next {
  background: var(--ink-900);
  color: var(--paper);
  padding: 54px 0 62px;
}

.page-products .fx-next__head {
  margin-bottom: 30px;
}

.page-products .fx-next__head h2 {
  margin: 12px 0 0;
  font-size: clamp(22px, 4.6vw, 30px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -.015em;
  color: #fff;
}

.page-products .fx-next__grid {
  display: grid;
  gap: 16px;
}

.page-products .fx-next__item {
  display: block;
  text-decoration: none;
  color: inherit;
  background: rgba(16, 58, 99, .55);
  border: 1px solid rgba(143, 227, 214, .26);
  padding: 22px 20px;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-products .fx-next__item:hover,
.page-products .fx-next__item:focus-visible {
  border-color: var(--orange);
  background: rgba(16, 58, 99, .82);
}

.page-products .fx-next__num {
  font-size: 14px;
  font-weight: 700;
  color: var(--teal);
  letter-spacing: .04em;
}

.page-products .fx-next__item h3 {
  margin: 10px 0 0;
  font-size: 19px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -.01em;
}

.page-products .fx-next__item p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(246, 248, 250, .76);
}

.page-products .fx-next__go {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 700;
  color: var(--orange);
  border-bottom: 2px solid rgba(255, 122, 52, .4);
  padding-bottom: 2px;
}

/* ---------- 焦点 ---------- */
.page-products a:focus-visible,
.page-products button:focus-visible,
.page-products summary:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

/* ---------- 窄屏收敛 ---------- */
@media (max-width: 480px) {
  .page-products .fx-hero {
    padding: 22px 0 46px;
  }

  .page-products .fx-head {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .page-products .fx-head__num {
    font-size: 26px;
  }

  .page-products .fx-mod,
  .page-products .fx-step {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-products .fx-mod__num {
    font-size: 18px;
  }

  .page-products .fx-step::before {
    display: none;
  }

  .page-products .fx-step__marker {
    width: 38px;
    height: 38px;
    font-size: 14px;
  }

  .page-products .fx-specs > div {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 768px) {
  .page-products .fx-hero {
    padding: 36px 0 74px;
  }

  .page-products .fx-mod {
    padding: 24px 24px;
  }

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

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

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

  .page-products .fx-next__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-products .fx-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 56px;
    align-items: end;
  }

  .page-products .fx-panels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .page-products .fx-mods {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-products .fx-devices {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .fx-scene {
    padding: 26px 24px;
  }
}

@media (min-width: 1024px) {
  .page-products .fx-body__grid {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 52px;
  }

  .page-products .fx-index {
    display: block;
  }

  .page-products .fx-index__sticky {
    position: sticky;
    top: calc(var(--brand-bar-h) + 28px);
  }

  .page-products .fx-index__label {
    margin: 0 0 16px;
    font-size: 12px;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--line);
  }

  .page-products .fx-index__list {
    list-style: none;
    margin: 0;
    padding: 0;
  }

  .page-products .fx-index__link {
    display: block;
    padding: 10px 0 10px 14px;
    border-left: 2px solid var(--mist);
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-ink);
    text-decoration: none;
    transition: border-left-color var(--dur) var(--ease), color var(--dur) var(--ease);
  }

  .page-products .fx-index__link:hover,
  .page-products .fx-index__link:focus-visible {
    border-left-color: var(--orange);
    color: var(--orange-deep);
  }

  .page-products .fx-index__num {
    font-size: 12px;
    font-weight: 700;
    color: var(--teal);
    margin-right: 8px;
  }

  .page-products .fx-chapter {
    padding-top: 54px;
  }
}