.page-products {
  --fc-gap: 16px;
  --fc-pad: 20px;
  --fc-radius: var(--r-md);
  display: block;
}

/* ===== HERO ===== */
.page-products .fc-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--bar-h) + 40px) 0 48px;
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(59, 130, 246, 0.20), transparent 58%),
    radial-gradient(85% 70% at -5% 100%, rgba(255, 107, 44, 0.14), transparent 62%),
    var(--ink-900);
  border-bottom: 1px solid var(--ink-700);
}

.page-products .fc-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue), var(--orange), transparent);
  opacity: 0.5;
}

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

.page-products .fc-hero__kicker {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 22px 0 14px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper-dim);
  font-family: var(--font-display);
  font-weight: 700;
}

.page-products .fc-hero__pip {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(37, 224, 208, 0.16);
}

.page-products .fc-hero__title {
  margin: 0 0 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--font-display);
  color: var(--paper);
}

.page-products .fc-hero__title-main {
  font-size: clamp(44px, 10vw, 84px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 0.96;
}

.page-products .fc-hero__title-sub {
  font-size: clamp(17px, 3.6vw, 28px);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--paper-dim);
  max-width: 22ch;
}

.page-products .fc-hero__lede {
  max-width: 62ch;
  margin: 0 0 32px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-products .fc-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin: 0;
  border: 1px solid var(--ink-700);
  border-radius: var(--fc-radius);
  overflow: hidden;
  background: var(--ink-700);
}

.page-products .fc-hero__stat {
  background: var(--ink-850);
  padding: 14px 16px;
}

.page-products .fc-hero__stat dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--paper-dim);
  margin-bottom: 6px;
}

.page-products .fc-hero__stat dd {
  margin: 0;
  font-size: 26px;
  font-weight: 700;
  color: var(--paper);
  line-height: 1;
}

.page-products .fc-hero__stat dd small {
  font-size: 12px;
  font-weight: 400;
  color: var(--paper-dim);
  margin-left: 4px;
  letter-spacing: 0;
}

/* ===== SECTION SHELL ===== */
.page-products .fc-sec {
  padding: 52px 0;
  border-bottom: 1px solid rgba(42, 57, 71, 0.6);
}

.page-products .fc-sec--live { background: linear-gradient(180deg, var(--ink-900), var(--ink-850)); }
.page-products .fc-sec--rank { background: var(--ink-850); }
.page-products .fc-sec--cards { background: var(--ink-900); }
.page-products .fc-sec--local { background: var(--ink-850); }
.page-products .fc-sec--metrics { background: var(--ink-900); }
.page-products .fc-sec--api { background: linear-gradient(180deg, var(--ink-850), var(--ink-900)); }

.page-products .fc-sec .section-head {
  margin-bottom: 28px;
}

.page-products .fc-sec .section-head__title {
  font-size: clamp(24px, 5.2vw, 38px);
  line-height: 1.2;
  margin: 8px 0 12px;
  color: var(--paper);
}

.page-products .fc-sec .section-head__note {
  max-width: 64ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper-dim);
}

/* ===== FIGURES ===== */
.page-products .fc-figure {
  margin: 0 0 28px;
  border: 1px solid var(--ink-700);
  border-radius: var(--fc-radius);
  overflow: hidden;
  background: var(--ink-800);
}

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

.page-products .fc-figure__cap {
  display: block;
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--paper-dim);
  border-top: 1px solid var(--ink-700);
}

/* ===== CARD BASICS ===== */
.page-products .fc-card {
  position: relative;
  padding: var(--fc-pad);
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-radius: var(--fc-radius);
  overflow: hidden;
}

.page-products .fc-card--test {
  border-color: rgba(255, 197, 61, 0.45);
  background: linear-gradient(160deg, rgba(255, 197, 61, 0.07), var(--ink-800) 55%);
}

.page-products .fc-card__bar {
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--blue);
}

.page-products .fc-card__bar--signal { background: var(--signal); }
.page-products .fc-card__bar--blue { background: var(--blue); }
.page-products .fc-card__bar--cyan { background: var(--cyan); }

.page-products .fc-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.page-products .fc-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-products .fc-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--paper-dim);
}

.page-products .fc-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 14px 0 0;
  border-top: 1px dashed var(--ink-700);
  display: grid;
  gap: 9px;
}

.page-products .fc-list li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--paper-dim);
}

.page-products .fc-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--blue);
}

/* ===== VERSUS (测试版 / 正式版) ===== */
.page-products .fc-versus {
  display: grid;
  gap: var(--fc-gap);
  margin-bottom: 28px;
}

.page-products .fc-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--ink-700);
  border: 1px solid var(--ink-700);
  border-radius: var(--fc-radius);
  overflow: hidden;
}

.page-products .fc-steps__item {
  background: var(--ink-850);
  padding: 18px var(--fc-pad);
}

.page-products .fc-steps__n {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--blue);
  margin-bottom: 8px;
}

.page-products .fc-steps__item h4 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-products .fc-steps__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper-dim);
}

/* ===== LIVE ===== */
.page-products .fc-live {
  display: grid;
  gap: 24px;
}

.page-products .fc-live__lede {
  margin: 0 0 20px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--paper-dim);
  max-width: 60ch;
}

.page-products .fc-specs {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  border-top: 1px solid var(--ink-700);
}

.page-products .fc-specs__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--ink-700);
}

.page-products .fc-specs__k {
  font-size: 13.5px;
  color: var(--paper-dim);
}

.page-products .fc-specs__v {
  font-size: 19px;
  font-weight: 700;
  color: var(--cyan);
  white-space: nowrap;
}

.page-products .fc-specs__v em {
  font-style: normal;
  font-size: 12px;
  margin-left: 2px;
  color: var(--paper-dim);
}

.page-products .fc-note {
  padding: 18px var(--fc-pad);
  border-radius: var(--fc-radius);
  border: 1px solid var(--ink-700);
  background: var(--ink-800);
  border-left: 3px solid var(--cyan);
}

.page-products .fc-note__t {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-products .fc-note p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-products .fc-live__figure {
  margin: 0;
  border: 1px solid var(--ink-700);
  border-radius: var(--fc-radius);
  overflow: hidden;
  background: var(--ink-800);
}

.page-products .fc-live__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ===== RANK ===== */
.page-products .fc-rank {
  display: grid;
  gap: 20px;
}

.page-products .fc-rank__hero {
  position: relative;
  padding: 26px var(--fc-pad) 24px;
  border-radius: var(--r-lg);
  border: 1px solid var(--ink-700);
  background:
    linear-gradient(135deg, rgba(255, 197, 61, 0.10), transparent 55%),
    var(--ink-800);
  overflow: hidden;
}

.page-products .fc-rank__num {
  display: block;
  font-size: clamp(64px, 18vw, 108px);
  font-weight: 700;
  line-height: 0.85;
  color: var(--signal);
  letter-spacing: -0.03em;
}

.page-products .fc-rank__unit {
  display: block;
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-products .fc-rank__hero p {
  margin: 0;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-products .fc-rank__grid {
  display: grid;
  gap: var(--fc-gap);
}

/* ===== ARCHIVE ===== */
.page-products .fc-archive {
  display: grid;
  gap: 24px;
}

.page-products .fc-archive__figure {
  margin: 0;
  border: 1px solid var(--ink-700);
  border-radius: var(--fc-radius);
  overflow: hidden;
  background: var(--ink-800);
}

.page-products .fc-archive__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-products .fc-archive__lede {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-dim);
  max-width: 60ch;
}

.page-products .fc-rounds {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .fc-round {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 16px;
  border-radius: var(--fc-radius);
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-left: 3px solid var(--yellow);
}

.page-products .fc-round--r {
  border-left-color: var(--red);
}

.page-products .fc-round__tag {
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-products .fc-round__nums {
  font-size: 15px;
  color: var(--paper-dim);
  white-space: nowrap;
}

.page-products .fc-round__nums b {
  font-size: 19px;
  color: var(--yellow);
  font-weight: 700;
}

.page-products .fc-round--r .fc-round__nums b:last-of-type {
  color: var(--red);
}

.page-products .fc-round__nums i {
  display: inline-block;
  width: 1px;
  height: 12px;
  margin: 0 8px;
  background: var(--ink-700);
  vertical-align: middle;
}

.page-products .fc-filter {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
  padding: 0;
}

.page-products .fc-filter__chip {
  padding: 6px 13px;
  border-radius: 999px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--paper-dim);
  border: 1px solid var(--ink-700);
  background: var(--ink-850);
}

.page-products .fc-filter__chip--on {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--paper);
  font-weight: 700;
}

.page-products .fc-archive__foot {
  margin: 0;
  padding-top: 16px;
  border-top: 1px dashed var(--ink-700);
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper-dim);
  max-width: 58ch;
}

/* ===== LOCAL ===== */
.page-products .fc-local {
  display: grid;
  gap: var(--fc-gap);
  margin-bottom: 28px;
}

/* ===== METRICS ===== */
.page-products .fc-metrics {
  display: grid;
  gap: var(--fc-gap);
}

.page-products .fc-metric {
  border: 1px solid var(--ink-700);
  border-radius: var(--fc-radius);
  background: var(--ink-800);
  overflow: hidden;
}

.page-products .fc-metric[open] {
  border-color: rgba(37, 224, 208, 0.45);
}

.page-products .fc-metric__head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px var(--fc-pad);
  cursor: pointer;
  list-style: none;
}

.page-products .fc-metric__head::-webkit-details-marker { display: none; }
.page-products .fc-metric__head::marker { content: ""; }

.page-products .fc-metric__glyph {
  flex: 0 0 auto;
  display: block;
  width: 40px;
  height: 40px;
}

.page-products .fc-metric__glyph svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-products .fc-metric__name {
  flex: 1 1 auto;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-products .fc-metric__hint {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  border: 1px solid rgba(37, 224, 208, 0.4);
  border-radius: 999px;
  padding: 3px 10px;
}

.page-products .fc-metric[open] .fc-metric__hint::after { content: " ▲"; }
.page-products .fc-metric__hint::after { content: " ▼"; font-size: 9px; }

.page-products .fc-metric__body {
  padding: 0 var(--fc-pad) 18px;
}

.page-products .fc-metric__body p {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--ink-700);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-products .fc-metrics__foot {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper-dim);
}

/* ===== API ===== */
.page-products .fc-api {
  display: grid;
  gap: 24px;
}

.page-products .fc-api__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin: 0 0 22px;
  background: var(--ink-700);
  border: 1px solid var(--ink-700);
  border-radius: var(--fc-radius);
  overflow: hidden;
}

.page-products .fc-api__stat {
  background: var(--ink-800);
  padding: 16px;
}

.page-products .fc-api__stat dt {
  font-size: 12.5px;
  color: var(--paper-dim);
  margin-bottom: 8px;
}

.page-products .fc-api__stat dd {
  margin: 0;
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-products .fc-api__stat dd small {
  font-size: 12px;
  font-weight: 400;
  color: var(--paper-dim);
  margin-left: 4px;
  letter-spacing: 0;
}

.page-products .fc-api__lede {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-dim);
  max-width: 60ch;
}

.page-products .fc-flow {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .fc-flow__item {
  padding-left: 16px;
  border-left: 2px solid var(--ink-700);
}

.page-products .fc-flow__n {
  display: block;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--orange);
  margin-bottom: 6px;
}

.page-products .fc-flow__item h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-products .fc-flow__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper-dim);
}

.page-products .fc-api__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .fc-api__figure {
  margin: 0;
  border: 1px solid var(--ink-700);
  border-radius: var(--fc-radius);
  overflow: hidden;
  background: var(--ink-800);
}

.page-products .fc-api__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-products .fc-api__more {
  margin: 26px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--paper-dim);
}

.page-products .fc-api__more a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .fc-api__more a:hover {
  color: var(--cyan);
}

/* ===== RESPONSIVE ===== */
@media (min-width: 640px) {
  .page-products {
    --fc-pad: 24px;
    --fc-gap: 18px;
  }

  .page-products .fc-hero__stats { grid-template-columns: repeat(4, 1fr); }
  .page-products .fc-steps { grid-template-columns: repeat(3, 1fr); }
  .page-products .fc-api__stats { grid-template-columns: repeat(4, 1fr); }
  .page-products .fc-metrics { grid-template-columns: repeat(2, 1fr); }
  .page-products .fc-local { grid-template-columns: repeat(2, 1fr); }
  .page-products .fc-rank__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px) {
  .page-products .fc-sec { padding: 76px 0; }

  .page-products .fc-hero {
    padding: calc(var(--bar-h) + 64px) 0 64px;
  }

  .page-products .fc-versus { grid-template-columns: 1fr 1fr; }

  .page-products .fc-live {
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: start;
    gap: 40px;
  }

  .page-products .fc-archive {
    grid-template-columns: 320px minmax(0, 1fr);
    align-items: start;
    gap: 40px;
  }

  .page-products .fc-archive__figure { margin: 0; }

  .page-products .fc-rank {
    grid-template-columns: 320px minmax(0, 1fr);
    align-items: start;
    gap: 32px;
  }

  .page-products .fc-rank__grid { grid-template-columns: 1fr; }

  .page-products .fc-local {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .page-products .fc-local .fc-card--md:nth-child(even) { margin-top: 34px; }

  .page-products .fc-metrics { grid-template-columns: repeat(2, 1fr); gap: 20px; }

  .page-products .fc-api {
    grid-template-columns: minmax(0, 1fr) 380px;
    align-items: start;
    gap: 40px;
  }

  .page-products .fc-api__figure { margin: 0; }
}

@media (min-width: 1100px) {
  .page-products .fc-sec .section-head {
    display: grid;
    grid-template-columns: 96px minmax(0, 1fr);
    column-gap: 24px;
    align-items: start;
    margin-bottom: 36px;
  }

  .page-products .fc-sec .section-head__num {
    grid-row: 1 / span 2;
    font-size: 46px;
    line-height: 1;
  }

  .page-products .fc-sec .section-head__title { margin-top: 0; }

  .page-products .fc-local {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-products .fc-local .fc-card--md:nth-child(even) { margin-top: 44px; }

  .page-products .fc-metrics { grid-template-columns: repeat(2, 1fr); }

  .page-products .fc-rank__grid { grid-template-columns: repeat(3, 1fr); }

  .page-products .fc-rank__grid .fc-card--drop { margin-top: 30px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .fc-card,
  .page-products .fc-metric {
    transition: none;
  }
}
<<<END>>>