.page-products {
  --fm-gap: clamp(24px, 5vw, 56px);
}

.page-products img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ============ 首屏：偏心对焦 + 透镜光晕 ============ */
.page-products .fm-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(28px, 6vw, 64px);
  padding-bottom: clamp(40px, 7vw, 76px);
}

.page-products .fm-hero::after {
  content: "";
  position: absolute;
  top: 4%;
  right: -22%;
  width: min(460px, 78vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(circle, rgba(242, 169, 59, 0.18) 0 20%, rgba(242, 169, 59, 0) 21%),
    radial-gradient(circle, rgba(201, 162, 39, 0) 0 47%, rgba(201, 162, 39, 0.16) 47.5% 48.5%, rgba(201, 162, 39, 0) 49%),
    radial-gradient(circle, rgba(199, 210, 220, 0) 0 71%, rgba(199, 210, 220, 0.12) 71.5% 72.5%, rgba(199, 210, 220, 0) 73%);
  animation: fm-breathe 10s ease-in-out infinite;
}

.page-products .fm-hero > * {
  position: relative;
  z-index: 1;
}

.page-products .fm-hero .display {
  max-width: 16em;
  margin-top: 14px;
}

.page-products .fm-hero .lede {
  max-width: 34em;
  margin-top: 20px;
}

.page-products .fm-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

@keyframes fm-breathe {
  0%, 100% { opacity: 0.45; transform: scale(1); }
  50% { opacity: 0.72; transform: scale(1.03); }
}

/* ============ 坐标索引条 ============ */
.page-products .fm-coords {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 16px 0;
  margin-bottom: clamp(44px, 8vw, 88px);
}

.page-products .fm-coords__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  gap: 10px 16px;
}

.page-products .fm-coords__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 0;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.22s ease, border-color 0.22s ease;
}

.page-products .fm-coords__link:hover,
.page-products .fm-coords__link:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
  outline: none;
}

.page-products .fm-coords__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-products .fm-coords__label {
  white-space: nowrap;
}

/* ============ 章节标题区 ============ */
.page-products .section__head {
  max-width: 46em;
  margin-bottom: clamp(30px, 5vw, 54px);
}

.page-products .section__head .lede {
  margin-top: 14px;
}

/* ============ 01 注册三步 ============ */
.page-products .fm-register {
  display: grid;
  gap: var(--fm-gap);
}

.page-products .fm-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 30px;
}

.page-products .fm-steps__item {
  position: relative;
  padding-top: 24px;
  border-top: 2px solid var(--ink-3);
}

.page-products .fm-steps__item::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  height: 2px;
  width: var(--fm-fill, 40%);
  background: linear-gradient(90deg, var(--amber), rgba(242, 169, 59, 0));
}

.page-products .fm-steps__item:nth-child(1) { --fm-fill: 34%; }
.page-products .fm-steps__item:nth-child(2) { --fm-fill: 67%; }
.page-products .fm-steps__item:nth-child(3) { --fm-fill: 100%; }

.page-products .fm-steps__num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-products .fm-steps__item .h3 {
  margin-bottom: 8px;
}

.page-products .fm-steps__item p {
  color: var(--slate);
}

.page-products .fm-register__shot {
  margin: 0;
}

/* ============ 02 当季说明 ============ */
.page-products .fm-season {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 30px;
}

.page-products .fm-season__item {
  border-top: 1px solid var(--line-strong);
  padding-top: 22px;
}

.page-products .fm-season__item .tag {
  display: inline-block;
  margin-bottom: 14px;
}

.page-products .fm-season__item .h3 {
  margin-bottom: 8px;
}

.page-products .fm-season__item p {
  color: var(--slate);
}

/* ============ 03 分类站点 ============ */
.page-products .fm-catalog__figure {
  margin: 0 0 clamp(30px, 5vw, 50px);
}

.page-products .fm-catalog__plates .plate p {
  color: var(--slate);
  margin-top: 10px;
}

/* ============ 04 版本核对 ============ */
.page-products .fm-ruler {
  margin-bottom: clamp(30px, 5vw, 52px);
}

.page-products .fm-ruler__track {
  display: flex;
  justify-content: space-between;
  gap: 6px;
  border-bottom: 1px solid var(--line-strong);
  background-image: repeating-linear-gradient(to right, var(--line) 0 1px, transparent 1px 14px);
  background-repeat: no-repeat;
  background-position: left bottom;
  background-size: 100% 9px;
}

.page-products .fm-ruler__tick {
  flex: 1 1 0;
  min-width: 0;
  height: 78px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

.page-products .fm-ruler__tick b {
  font-weight: 500;
}

.page-products .fm-ruler__tick::after {
  content: "";
  display: block;
  width: 1px;
  height: 24px;
  background: var(--line-strong);
}

.page-products .fm-ruler__tick.is-prev {
  color: var(--jade);
}

.page-products .fm-ruler__tick.is-prev::after {
  background: var(--jade);
  height: 32px;
}

.page-products .fm-ruler__tick.is-now {
  color: var(--amber);
}

.page-products .fm-ruler__tick.is-now b {
  font-weight: 700;
}

.page-products .fm-ruler__tick.is-now::after {
  background: var(--amber);
  height: 42px;
  box-shadow: 0 0 12px var(--glow-amber);
}

.page-products .fm-version__grid {
  display: grid;
  gap: var(--fm-gap);
}

.page-products .fm-version__body .h3 {
  margin-bottom: 10px;
}

.page-products .fm-version__body .h3 + p {
  margin-bottom: 26px;
  color: var(--slate);
}

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

.page-products .fm-version__spots li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
  color: var(--silver);
  font-size: 15px;
}

.page-products .fm-mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--jade);
  white-space: nowrap;
}

.page-products .fm-diff {
  display: grid;
  gap: 16px;
}

.page-products .fm-diff__col {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 22px;
  background: rgba(11, 26, 46, 0.55);
}

.page-products .fm-diff__col--now {
  border-color: rgba(242, 169, 59, 0.5);
  background: linear-gradient(180deg, rgba(242, 169, 59, 0.14), rgba(11, 26, 46, 0.6));
  box-shadow: 0 22px 46px -30px var(--amber);
}

.page-products .fm-diff__ver {
  font-family: var(--font-mono);
  font-size: clamp(28px, 5vw, 38px);
  line-height: 1;
  letter-spacing: 0.02em;
  margin: 0;
  color: var(--stone);
}

.page-products .fm-diff__col--now .fm-diff__ver {
  color: var(--amber);
}

.page-products .fm-diff__tag {
  margin: 10px 0 16px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--slate);
}

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

.page-products .fm-diff__list li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  color: var(--silver);
  line-height: 1.7;
}

.page-products .fm-diff__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 1px;
  background: var(--gold);
}

/* ============ 05 资料下载 ============ */
.page-products .fm-dl {
  display: grid;
  gap: var(--fm-gap);
}

.page-products .fm-dl__figure {
  margin: 0;
}

.page-products .fm-formats {
  position: relative;
}

.page-products .fm-formats__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-products .fm-formats__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.page-products .fm-formats__tab {
  cursor: pointer;
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  color: var(--silver);
  font-size: 13px;
  letter-spacing: 0.04em;
  transition: background 0.22s ease, color 0.22s ease, border-color 0.22s ease;
}

.page-products .fm-formats__tab:hover {
  border-color: var(--jade);
  color: var(--stone);
}

.page-products #fm-f-pdf:checked ~ .fm-formats__tabs .fm-formats__tab[for="fm-f-pdf"],
.page-products #fm-f-txt:checked ~ .fm-formats__tabs .fm-formats__tab[for="fm-f-txt"],
.page-products #fm-f-sheet:checked ~ .fm-formats__tabs .fm-formats__tab[for="fm-f-sheet"] {
  background: rgba(79, 179, 166, 0.18);
  border-color: var(--jade);
  color: var(--stone);
}

.page-products .fm-formats__panel {
  display: none;
  padding: 6px 0 6px 22px;
  border-left: 2px solid var(--jade);
}

.page-products .fm-formats__panel .h3 {
  margin-bottom: 10px;
}

.page-products .fm-formats__panel p {
  color: var(--slate);
  max-width: 34em;
}

.page-products #fm-f-pdf:checked ~ .fm-formats__panels .fm-formats__panel--pdf,
.page-products #fm-f-txt:checked ~ .fm-formats__panels .fm-formats__panel--txt,
.page-products #fm-f-sheet:checked ~ .fm-formats__panels .fm-formats__panel--sheet {
  display: block;
  animation: fm-panel-in 0.3s ease both;
}

@keyframes fm-panel-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

/* ============ 06 适用场景 ============ */
.page-products .fm-scene__figure {
  margin: 0 0 clamp(28px, 5vw, 46px);
}

.page-products .fm-scene {
  display: grid;
  gap: 20px;
}

.page-products .fm-scene__card {
  padding: 26px 22px 26px 24px;
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: linear-gradient(90deg, rgba(27, 53, 87, 0.65), rgba(27, 53, 87, 0.18));
}

.page-products .fm-scene__card:nth-child(2) {
  border-left-color: var(--jade);
}

.page-products .fm-scene__card:nth-child(3) {
  border-left-color: var(--clay);
}

.page-products .fm-scene__card .h3 {
  margin-bottom: 10px;
}

.page-products .fm-scene__card p {
  color: var(--slate);
  font-size: 15px;
}

/* ============ 07 入口清单 ============ */
.page-products .fm-index {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 62em;
}

.page-products .fm-index__row + .fm-index__row {
  border-top: 1px solid var(--line);
}

.page-products .fm-index__link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 16px;
  padding: 18px 6px;
  text-decoration: none;
  color: inherit;
  transition: background 0.22s ease, padding-left 0.22s ease;
}

.page-products .fm-index__link:hover,
.page-products .fm-index__link:focus-visible {
  background: rgba(27, 53, 87, 0.45);
  padding-left: 16px;
  outline: none;
}

.page-products .fm-index__name {
  font-size: 17px;
  font-weight: 600;
  color: var(--stone);
  transition: color 0.22s ease;
}

.page-products .fm-index__link:hover .fm-index__name,
.page-products .fm-index__link:focus-visible .fm-index__name {
  color: var(--amber);
}

.page-products .fm-index__desc {
  grid-column: 1 / -1;
  font-size: 14px;
  color: var(--slate);
}

.page-products .fm-index__go {
  align-self: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold);
  white-space: nowrap;
}

/* ============ 断点 ============ */
@media (min-width: 700px) {
  .page-products .fm-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
  }

  .page-products .fm-season {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 34px;
  }

  .page-products .fm-scene {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

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

  .page-products .fm-index__link {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 2fr) auto;
    align-items: center;
    padding: 20px 6px;
  }

  .page-products .fm-index__desc {
    grid-column: auto;
  }
}

@media (min-width: 960px) {
  .page-products .fm-register {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-products .fm-version__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-products .fm-dl {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }

  .page-products .fm-hero::after {
    right: -6%;
    top: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .fm-hero::after {
    animation: none;
  }

  .page-products #fm-f-pdf:checked ~ .fm-formats__panels .fm-formats__panel--pdf,
  .page-products #fm-f-txt:checked ~ .fm-formats__panels .fm-formats__panel--txt,
  .page-products #fm-f-sheet:checked ~ .fm-formats__panels .fm-formats__panel--sheet {
    animation: none;
  }

  .page-products .fm-index__link,
  .page-products .fm-coords__link {
    transition: none;
  }
}