.page-products {
  --ft-t1: #4A3A8C;
  --ft-t2: #35E0D0;
  --ft-t3: #3FBF8F;
  --ft-t4: #F2A33C;
  background: var(--ink);
  color: var(--silver);
}

/* ===== 首屏 ===== */
.page-products .ft-hero {
  padding: 26px 0 52px;
  background:
    radial-gradient(120% 78% at 84% -6%, rgba(74, 58, 140, 0.42), transparent 62%),
    linear-gradient(180deg, var(--ink-deep) 0%, var(--ink) 100%);
  border-bottom: 1px solid var(--line);
}

.page-products .ft-hero .breadcrumb {
  margin-bottom: 30px;
}

.page-products .ft-hero__inner {
  display: grid;
  gap: 34px;
}

.page-products .ft-hero__copy .eyebrow {
  margin: 0 0 16px;
}

.page-products .ft-hero h1 {
  font-family: var(--font-narrow);
  font-size: clamp(30px, 8vw, 52px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: 0.045em;
  margin: 0 0 18px;
  color: var(--silver);
}

.page-products .ft-hero__lead {
  margin: 0 0 26px;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(232, 236, 245, 0.78);
}

.page-products .ft-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .ft-hero__fig {
  margin: 0;
  position: relative;
}

.page-products .ft-hero__fig::after {
  content: "";
  position: absolute;
  inset: auto 0 -1px 0;
  height: 42%;
  background: linear-gradient(180deg, transparent, rgba(11, 16, 38, 0.85));
  pointer-events: none;
}

.page-products .ft-hero__fig .media__img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  filter: saturate(0.82) contrast(1.06) brightness(0.94);
}

/* ===== 对照盘 ===== */
.page-products .ft-index {
  position: relative;
  overflow: hidden;
}

.page-products .ft-index .section__lead {
  max-width: 62ch;
}

.page-products .ft-tabs {
  margin-top: 30px;
}

.page-products .ft-tabbar {
  display: grid;
  gap: 12px;
}

.page-products .ft-tab {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 5px;
  padding: 18px 18px 18px 22px;
  text-align: left;
  background: rgba(232, 236, 245, 0.03);
  border: 1px solid var(--line);
  color: inherit;
  font: inherit;
  cursor: pointer;
  transition:
    background var(--dur) var(--ease-track),
    border-color var(--dur) var(--ease-track);
}

.page-products .ft-tab::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--ft-accent, var(--nebula));
}

.page-products .ft-tab:hover {
  background: rgba(232, 236, 245, 0.065);
  border-color: var(--line-strong);
}

.page-products .ft-tab[aria-selected="true"] {
  background: linear-gradient(140deg, rgba(74, 58, 140, 0.34), rgba(232, 236, 245, 0.05));
  border-color: var(--ft-accent, var(--cyan));
}

.page-products .ft-tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-products .ft-tab--t1 { --ft-accent: var(--ft-t1); }
.page-products .ft-tab--t2 { --ft-accent: var(--ft-t2); }
.page-products .ft-tab--t3 { --ft-accent: var(--ft-t3); }
.page-products .ft-tab--t4 { --ft-accent: var(--ft-t4); }

.page-products .ft-tab__code {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ft-accent, var(--cyan));
}

.page-products .ft-tab__name {
  font-family: var(--font-narrow);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--silver);
}

.page-products .ft-tab__cue {
  font-size: 13px;
  line-height: 1.62;
  color: var(--slate);
}

.page-products .ft-tab__step {
  margin-top: 8px;
  padding-top: 10px;
  width: 100%;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  line-height: 1.6;
  color: rgba(232, 236, 245, 0.72);
}

.page-products .ft-tab__step .mono {
  margin-right: 6px;
  color: var(--ft-accent, var(--cyan));
}

.page-products .ft-panels {
  margin-top: 18px;
}

.page-products .ft-panel {
  padding: 24px 18px;
  background:
    linear-gradient(180deg, rgba(5, 7, 15, 0.72), rgba(11, 16, 38, 0.72));
  border: 1px solid var(--line);
  border-top: 2px solid var(--ft-accent, var(--nebula));
}

.page-products .ft-panel[hidden] {
  display: none;
}

.page-products .ft-panel:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-products .ft-panel--t1 { --ft-accent: var(--ft-t1); }
.page-products .ft-panel--t2 { --ft-accent: var(--ft-t2); }
.page-products .ft-panel--t3 { --ft-accent: var(--ft-t3); }
.page-products .ft-panel--t4 { --ft-accent: var(--ft-t4); }

.page-products .ft-panel__head {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}

.page-products .ft-panel__code {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ft-accent, var(--cyan));
}

.page-products .ft-panel__title {
  margin: 0;
  font-family: var(--font-narrow);
  font-size: clamp(22px, 5.4vw, 30px);
  font-weight: 700;
  line-height: 1.32;
  letter-spacing: 0.02em;
  color: var(--silver);
}

.page-products .ft-panel__intro {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(232, 236, 245, 0.75);
}

.page-products .ft-panel__grid {
  display: grid;
  gap: 26px;
}

.page-products .ft-panel__fig {
  margin: 0;
}

.page-products .ft-panel__fig .media__img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  filter: saturate(0.8) contrast(1.06) brightness(0.93);
}

/* 步骤条 */
.page-products .ft-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .ft-step {
  position: relative;
  padding: 16px 0 16px 44px;
  border-top: 1px solid var(--line);
}

.page-products .ft-step:last-child {
  border-bottom: 1px solid var(--line);
}

.page-products .ft-step__num {
  position: absolute;
  left: 0;
  top: 19px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--ft-accent, var(--cyan));
}

.page-products .ft-step__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--silver);
}

.page-products .ft-step__body {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: rgba(232, 236, 245, 0.72);
}

/* 材料清单 */
.page-products .ft-materials {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .ft-material {
  display: grid;
  grid-template-columns: 34px 1fr;
  grid-template-rows: auto auto;
  align-items: baseline;
  gap: 2px 12px;
  padding: 14px 16px;
  background: rgba(242, 163, 60, 0.06);
  border: 1px solid rgba(242, 163, 60, 0.22);
}

.page-products .ft-material__num {
  grid-row: 1 / span 2;
  align-self: center;
  font-size: 15px;
  color: var(--gold);
}

.page-products .ft-material__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--silver);
}

.page-products .ft-material__desc {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(232, 236, 245, 0.66);
}

.page-products .ft-note {
  margin: 18px 0 0;
  padding: 14px 16px;
  background: rgba(232, 236, 245, 0.04);
  border-left: 3px solid var(--ft-accent, var(--cyan));
  font-size: 14px;
  line-height: 1.8;
  color: rgba(232, 236, 245, 0.76);
}

.page-products .ft-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 208, 0.45);
}

.page-products .ft-note a:hover,
.page-products .ft-note a:focus-visible {
  color: var(--silver);
  border-bottom-color: var(--silver);
}

/* ===== 跨设备 ===== */
.page-products .ft-device {
  background: var(--ink-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-products .ft-device .section__lead {
  max-width: 60ch;
}

.page-products .ft-device__grid {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.page-products .ft-device__item {
  padding: 22px 20px;
  background: rgba(232, 236, 245, 0.035);
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan);
}

.page-products .ft-device__code {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-products .ft-device__item h3 {
  margin: 10px 0 10px;
  font-family: var(--font-narrow);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--silver);
}

.page-products .ft-device__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: rgba(232, 236, 245, 0.72);
}

.page-products .ft-device__note {
  margin-top: 20px;
  padding: 18px 20px;
  background: rgba(242, 163, 60, 0.07);
  border: 1px solid rgba(242, 163, 60, 0.26);
  border-left: 3px solid var(--gold);
}

.page-products .ft-device__note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: rgba(232, 236, 245, 0.82);
}

.page-products .ft-device__note strong {
  color: var(--gold);
  font-weight: 700;
}

/* ===== 后续路径 ===== */
.page-products .ft-next {
  background: var(--ink);
}

.page-products .ft-next .section__lead {
  max-width: 58ch;
}

.page-products .ft-next__grid {
  display: grid;
  gap: 14px;
  margin-top: 30px;
}

.page-products .ft-next__card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 20px;
  background: rgba(232, 236, 245, 0.035);
  border: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
  transition:
    background var(--dur) var(--ease-track),
    border-color var(--dur) var(--ease-track);
}

.page-products .ft-next__card:hover,
.page-products .ft-next__card:focus-visible {
  background: rgba(53, 224, 208, 0.07);
  border-color: rgba(53, 224, 208, 0.4);
}

.page-products .ft-next__card--gold:hover,
.page-products .ft-next__card--gold:focus-visible {
  background: rgba(242, 163, 60, 0.09);
  border-color: rgba(242, 163, 60, 0.45);
}

.page-products .ft-next__code {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--slate);
}

.page-products .ft-next__card h3 {
  margin: 0;
  font-family: var(--font-narrow);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--silver);
}

.page-products .ft-next__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(232, 236, 245, 0.7);
}

.page-products .ft-next__go {
  margin-top: 6px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-products .ft-next__card--gold .ft-next__go {
  color: var(--gold);
}

/* ===== 响应式 ===== */
@media (min-width: 720px) {
  .page-products .ft-hero {
    padding: 38px 0 72px;
  }

  .page-products .ft-hero__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: 44px;
    align-items: center;
  }

  .page-products .ft-tabbar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .page-products .ft-panel {
    padding: 30px 28px;
  }

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

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

@media (min-width: 1024px) {
  .page-products .ft-hero {
    padding: 52px 0 92px;
  }

  .page-products .ft-hero__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 68px;
  }

  .page-products .ft-tabbar {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 14px;
  }

  .page-products .ft-tab--t1 { grid-column: span 3; }
  .page-products .ft-tab--t2 { grid-column: span 3; }
  .page-products .ft-tab--t3 { grid-column: span 2; }
  .page-products .ft-tab--t4 { grid-column: span 4; }

  .page-products .ft-panel {
    padding: 38px 36px;
  }

  .page-products .ft-panel__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 40px;
    align-items: start;
  }

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

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

@media (prefers-reduced-motion: reduce) {
  .page-products .ft-tab,
  .page-products .ft-next__card {
    transition: none;
  }
}
<<<END>>>