/* ===== 页面作用域：.page-products ===== */
.page-products {
  --pf-gap-s: clamp(14px, 2.2vw, 22px);
  --pf-gap-m: clamp(24px, 4vw, 44px);
  --pf-gap-l: clamp(48px, 7vw, 96px);
  --pf-line-light: 2px solid rgba(244, 239, 230, .78);
  --pf-line-dark: 2px solid var(--brown);
  --pf-shadow-dark: 5px 5px 0 rgba(108, 106, 138, .55);
  --pf-shadow-dark-2: 7px 7px 0 rgba(108, 106, 138, .7);

  background: var(--ink);
  color: var(--on-dark);
  overflow-x: hidden;
}

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

.page-products figure {
  margin: 0;
}

.page-products .card-body {
  padding: 18px clamp(16px, 2.2vw, 24px) clamp(20px, 2.6vw, 28px);
}

/* ---------- 面包屑（深底变体） ---------- */
.page-products .breadcrumbs {
  padding-top: clamp(16px, 3vw, 28px);
  font-size: 13px;
  letter-spacing: .03em;
}
.page-products .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--on-dark-mute);
}
.page-products .breadcrumb-list li + li::before {
  content: "/";
  margin: 0 10px;
  color: var(--violet);
}
.page-products .breadcrumb-item a {
  color: var(--on-dark);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}
.page-products .breadcrumb-item a:hover,
.page-products .breadcrumb-item a:focus-visible {
  border-bottom-color: var(--magenta);
}
.page-products .breadcrumb-item[aria-current="page"] {
  color: var(--on-dark-mute);
  font-family: var(--font-mono);
}

/* ---------- 首屏 ---------- */
.pf-hero {
  position: relative;
  padding: clamp(28px, 5vw, 60px) 0 clamp(30px, 4vw, 58px);
  background-image:
    var(--scan),
    radial-gradient(120% 90% at 6% -18%, rgba(255, 46, 147, .26), transparent 62%),
    radial-gradient(95% 85% at 102% -6%, rgba(44, 123, 255, .24), transparent 64%);
  background-color: var(--ink);
}

.pf-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pf-gap-m);
}

.pf-kicker {
  display: inline-block;
  margin: 0 0 16px;
  padding-left: 12px;
  border-left: 3px solid var(--magenta);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--green);
}

.page-products h1 {
  margin: 0 0 18px;
  font-size: clamp(34px, 6.4vw, 74px);
  line-height: 1.04;
  font-weight: 900;
  font-style: italic;
  letter-spacing: -0.02em;
  max-width: 18ch;
}

.pf-lede {
  margin: 0 0 22px;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--on-dark-mute);
}

.pf-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.pf-hero-side {
  border: var(--pf-line-light);
  box-shadow: var(--pf-shadow-dark);
  background: var(--ink-2);
  padding: 18px 18px 20px;
}

.pf-side-note {
  margin: 0 0 14px;
  padding-bottom: 12px;
  border-bottom: 1px dashed rgba(244, 239, 230, .24);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--green);
}

.pf-side-list {
  margin: 0;
  display: grid;
  gap: 10px;
}
.pf-side-list > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.pf-side-list dt {
  font-size: 13px;
  color: var(--on-dark-mute);
}
.pf-side-list dd {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .01em;
}

/* ---------- 区块标题组 ---------- */
.pf-sec-head {
  margin-bottom: var(--pf-gap-m);
  max-width: 78ch;
}
.pf-sec-head h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.12;
  font-weight: 900;
  letter-spacing: -0.015em;
}
.pf-sec-note {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--on-dark-mute);
  max-width: 66ch;
}

.pf-table-sec .pf-sec-note,
.pf-table-sec .pf-tbl-intro p {
  color: var(--on-light-mute);
}

/* ---------- 下载区 ---------- */
.pf-dl-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pf-gap-m);
}

.pf-dl-card {
  display: flex;
  flex-direction: column;
  background: var(--ink-2);
  border: var(--pf-line-light);
  box-shadow: var(--pf-shadow-dark);
  color: var(--on-dark);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.pf-dl-card:hover,
.pf-dl-card:focus-within {
  transform: translateY(-2px);
  box-shadow: var(--pf-shadow-dark-2);
}

.pf-dl-figure {
  border-bottom: 2px solid rgba(244, 239, 230, .24);
}
.pf-dl-figure img {
  width: 100%;
  object-fit: cover;
}
.pf-dl-figure figcaption,
.pf-tbl-figure figcaption,
.pf-cmp-figure figcaption,
.pf-price-figure figcaption,
.pf-compat-figure figcaption {
  padding: 10px 14px;
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: .01em;
  color: var(--on-dark-mute);
  border-top: 1px solid rgba(244, 239, 230, .18);
}

.pf-dl-card .card-title,
.pf-model-name,
.pf-export-item .card-title,
.pf-compat-card .card-title {
  margin: 10px 0 0;
  font-size: clamp(20px, 2.2vw, 25px);
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.pf-dl-text {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--on-dark-mute);
}

.pf-spec {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
}
.pf-spec li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 4px 16px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(244, 239, 230, .2);
  font-size: 14px;
}
.pf-spec-k {
  color: var(--on-dark-mute);
}
.pf-spec-v {
  font-weight: 700;
  letter-spacing: .01em;
  text-align: right;
}

.pf-dl-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--on-dark-mute);
  padding-left: 12px;
  border-left: 2px solid var(--amber);
}

/* ---------- 代际表区 ---------- */
.pf-table-sec {
  background: var(--paper);
  color: var(--on-light);
  border-top: 2px solid var(--brown);
  border-bottom: 2px solid var(--brown);
}
.pf-table-sec h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.12;
  font-weight: 900;
  letter-spacing: -0.015em;
}

.pf-tbl-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pf-gap-m);
  margin-bottom: var(--pf-gap-m);
}

.pf-tbl-intro p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
}

.pf-diff-key {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: .01em;
}
.pf-diff-sample {
  display: inline-block;
  width: 18px;
  height: 12px;
  box-shadow: inset 0 0 0 2px var(--green);
  background: rgba(56, 248, 176, .25);
  flex: 0 0 auto;
}

.pf-tbl-figure {
  border: var(--pf-line-dark);
  box-shadow: 4px 4px 0 var(--brown);
  background: var(--paper-2);
}
.pf-tbl-figure img {
  width: 100%;
  object-fit: cover;
}
.pf-tbl-figure figcaption {
  color: var(--on-light-mute);
  border-top: 1px solid rgba(30, 26, 23, .18);
}

.pf-table-scroll {
  margin-top: 4px;
}

.pf-gen-table {
  min-width: 780px;
}
.pf-gen-table th[scope="row"] {
  white-space: nowrap;
  font-weight: 700;
}
.pf-gen-badge {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 6px;
  border: 1px solid var(--brown);
  background: var(--paper-2);
  font-size: 11.5px;
  letter-spacing: .06em;
}

.page-products .pf-gen-table tbody tr.pf-row--gen4 {
  background: rgba(56, 248, 176, .2);
  box-shadow: inset 4px 0 0 var(--green);
}
.page-products .pf-gen-table tbody tr.pf-row--gen4:hover {
  background: rgba(56, 248, 176, .3);
}

.pf-diff {
  display: inline-block;
  padding: 2px 7px;
  font-weight: 800;
  letter-spacing: .02em;
  background: rgba(56, 248, 176, .24);
  box-shadow: inset 0 0 0 2px var(--green);
}

.pf-table-note {
  margin: var(--pf-gap-m) 0 0;
  max-width: 84ch;
  padding-left: 14px;
  border-left: 3px solid var(--blue);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--on-light-mute);
}

/* ---------- 横向对比卡 ---------- */
.pf-compare {
  border-top: 2px solid var(--brown);
}
.pf-cmp-head {
  max-width: 72ch;
}

.pf-cmp-figure {
  border: var(--pf-line-light);
  box-shadow: var(--pf-shadow-dark);
  background: var(--ink-2);
  max-width: 720px;
  margin-left: auto;
}
.pf-cmp-figure img {
  width: 100%;
  object-fit: cover;
}

.pf-rail {
  display: flex;
  gap: var(--pf-gap-s);
  overflow-x: auto;
  padding: 6px 4px 22px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}
.pf-rail:focus-visible {
  outline: 2px solid var(--magenta);
  outline-offset: 4px;
}

.pf-model {
  flex: 0 0 min(78vw, 306px);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  background: var(--ink-2);
  border: var(--pf-line-light);
  box-shadow: var(--pf-shadow-dark);
  color: var(--on-dark);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.pf-model:hover,
.pf-model:focus-within {
  transform: translateY(-2px);
  box-shadow: var(--pf-shadow-dark-2);
}
.pf-model--active {
  border-color: var(--magenta);
}

.pf-model-head {
  padding: 16px 16px 14px;
  border-bottom: 2px solid rgba(244, 239, 230, .22);
}
.pf-model-series {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--green);
}
.pf-model-name {
  margin: 0 0 12px;
  font-size: 23px;
}
.pf-model-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.pf-model-spec {
  margin: 0;
  padding: 8px 16px 18px;
  display: grid;
}
.pf-model-spec > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px dashed rgba(244, 239, 230, .18);
  font-size: 13.5px;
}
.pf-model-spec > div:last-child {
  border-bottom: 0;
}
.pf-model-spec dt {
  color: var(--on-dark-mute);
  flex: 0 0 auto;
}
.pf-model-spec dd {
  margin: 0;
  text-align: right;
  font-weight: 600;
}
.pf-model .pf-diff {
  background: rgba(56, 248, 176, .2);
  color: var(--on-dark);
}

.pf-rail-hint {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--on-dark-mute);
}

/* ---------- 价格档位 ---------- */
.pf-price {
  background: var(--paper);
  color: var(--on-light);
  border-top: 2px solid var(--brown);
  border-bottom: 2px solid var(--brown);
}
.pf-price h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.12;
  font-weight: 900;
  letter-spacing: -0.015em;
}

.pf-price-figure {
  border: var(--pf-line-dark);
  box-shadow: 4px 4px 0 var(--brown);
  margin-bottom: var(--pf-gap-m);
  background: var(--paper-2);
  max-width: 860px;
}
.pf-price-figure img {
  width: 100%;
  object-fit: cover;
}
.pf-price-figure figcaption {
  color: var(--on-light-mute);
  border-top: 1px solid rgba(30, 26, 23, .18);
}

.pf-price-bar {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pf-gap-s);
}

.pf-tier {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--paper-2);
  border: var(--pf-line-dark);
  box-shadow: 4px 4px 0 var(--brown);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.pf-tier:hover,
.pf-tier:focus-within {
  transform: translateY(-2px);
  box-shadow: 6px 6px 0 var(--brown);
}
.pf-tier:focus-visible {
  outline: 2px solid var(--magenta);
  outline-offset: 3px;
}
.pf-tier::before {
  content: "";
  display: block;
  height: 8px;
}
.pf-tier--1::before { background: var(--magenta); }
.pf-tier--2::before { background: var(--blue); }
.pf-tier--3::before { background: var(--green); }
.pf-tier--4::before { background: var(--amber); }

.pf-tier-name {
  display: block;
  padding: 16px 16px 0;
  font-size: 21px;
  font-weight: 900;
  letter-spacing: -0.01em;
}
.pf-tier-scene {
  display: block;
  padding: 6px 16px 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--on-light-mute);
}
.pf-tier-note {
  display: block;
  padding: 0 16px;
  margin-top: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--on-light-mute);
  transition: max-height var(--dur-2) var(--ease), opacity var(--dur-2) var(--ease), padding var(--dur-2) var(--ease);
}
.pf-tier:hover .pf-tier-note,
.pf-tier:focus-within .pf-tier-note {
  max-height: 12em;
  opacity: 1;
  padding: 10px 16px 18px;
}

/* ---------- 兼容性 ---------- */
.pf-compat {
  background: var(--ink);
}
.pf-compat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pf-gap-m);
}
.pf-compat-intro h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.12;
  font-weight: 900;
  letter-spacing: -0.015em;
}
.pf-compat-intro p {
  margin: 0 0 22px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--on-dark-mute);
}

.pf-compat-figure {
  border: var(--pf-line-light);
  box-shadow: var(--pf-shadow-dark);
  background: var(--ink-2);
}
.pf-compat-figure img {
  width: 100%;
  object-fit: cover;
}

.pf-compat-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pf-gap-s);
}
.pf-compat-card {
  background: var(--ink-2);
  border: var(--pf-line-light);
  box-shadow: var(--pf-shadow-dark);
  color: var(--on-dark);
  padding: 16px 18px 18px;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.pf-compat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--pf-shadow-dark-2);
}
.pf-compat-card .card-title {
  margin: 0 0 10px;
  font-size: 19px;
}
.pf-compat-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--on-dark-mute);
}

/* ---------- 导出 ---------- */
.pf-export {
  background: var(--ink-2);
  border-top: 2px solid var(--brown);
}
.pf-export-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pf-gap-m);
}
.pf-export-item {
  background: var(--ink);
  border: var(--pf-line-light);
  box-shadow: var(--pf-shadow-dark);
  color: var(--on-dark);
  padding: 18px clamp(16px, 2.2vw, 24px) 22px;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.pf-export-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--pf-shadow-dark-2);
}
.pf-export-item .card-title {
  margin: 12px 0 10px;
}
.pf-export-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--on-dark-mute);
}
.pf-export-meta {
  margin-top: 14px !important;
  padding-top: 12px;
  border-top: 1px dashed rgba(244, 239, 230, .24);
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--green) !important;
}

/* ---------- 口径说明与下一步 ---------- */
.pf-caliber {
  background: var(--ink);
}
.pf-caliber-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pf-gap-m);
}
.pf-caliber-body h2 {
  margin: 0 0 16px;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.16;
  font-weight: 900;
  letter-spacing: -0.012em;
}
.page-products .pf-caliber-body p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--on-dark-mute);
  max-width: 68ch;
}

.pf-next {
  border: var(--pf-line-light);
  box-shadow: var(--pf-shadow-dark);
  background: var(--ink-2);
  padding: 18px 18px 20px;
  align-self: start;
}
.pf-next-label {
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(244, 239, 230, .24);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--green);
}
.pf-next-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}
.pf-next-list a {
  display: block;
  font-size: 14px;
  line-height: 1.65;
  color: var(--on-dark);
  text-decoration: none;
  padding-left: 14px;
  border-left: 2px solid var(--violet);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.pf-next-list a:hover,
.pf-next-list a:focus-visible {
  border-left-color: var(--magenta);
  color: var(--paper-2);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .pf-tbl-head {
    grid-template-columns: minmax(0, 6.4fr) minmax(0, 3.6fr);
    align-items: start;
  }
  .pf-compat-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .pf-export-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .pf-price-bar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (hover: none) {
  .pf-tier-note {
    max-height: 14em;
    opacity: 1;
    padding: 10px 16px 18px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .pf-hero-grid {
    grid-template-columns: minmax(0, 7.4fr) minmax(0, 2.6fr);
    align-items: end;
  }
  .pf-dl-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: start;
  }
  .pf-compare .pf-rail {
    margin-inline: calc(var(--gutter) * -1);
    padding-inline: var(--gutter);
  }
  .pf-price-bar {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .pf-compat-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
  .pf-caliber-grid {
    grid-template-columns: minmax(0, 7.5fr) minmax(0, 2.5fr);
    align-items: start;
  }
}

@media (min-width: 1200px) {
  .pf-model {
    flex-basis: 320px;
  }
  .pf-cmp-figure {
    max-width: 780px;
  }
}

/* ---------- 减少动态偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-products .pf-dl-card,
  .page-products .pf-model,
  .page-products .pf-tier,
  .page-products .pf-compat-card,
  .page-products .pf-export-item {
    transition: none;
  }
  .page-products .pf-dl-card:hover,
  .page-products .pf-model:hover,
  .page-products .pf-tier:hover,
  .page-products .pf-compat-card:hover,
  .page-products .pf-export-item:hover {
    transform: none;
  }
}