.page-products {
  --pf-hair: rgba(124, 140, 153, .42);
  --pf-shadow: 6px 6px 0 var(--red-deep);
}

/* ---------- 首屏 ---------- */
.page-products .pf-hero {
  padding: 20px 0 clamp(40px, 6vw, 72px);
}

.page-products .pf-hero .breadcrumb {
  margin-bottom: clamp(16px, 3vw, 28px);
}

.page-products .pf-frame {
  position: relative;
  border: 2px solid var(--ink);
  background: var(--paper);
  padding: clamp(26px, 5vw, 58px) clamp(20px, 4vw, 54px);
  box-shadow: var(--pf-shadow);
}

.page-products .pf-frame__corner {
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid var(--red);
}

.page-products .pf-frame__corner--a {
  top: -8px;
  left: -8px;
  border-right: 0;
  border-bottom: 0;
}

.page-products .pf-frame__corner--b {
  top: -8px;
  right: -8px;
  border-left: 0;
  border-bottom: 0;
}

.page-products .pf-frame__corner--c {
  bottom: -8px;
  left: -8px;
  border-right: 0;
  border-top: 0;
}

.page-products .pf-frame__corner--d {
  bottom: -8px;
  right: -8px;
  border-left: 0;
  border-top: 0;
}

.page-products .pf-hero__title {
  margin: 14px 0 20px;
  max-width: 15em;
  font-size: clamp(32px, 6.4vw, 74px);
  font-weight: 900;
  line-height: 1.03;
  letter-spacing: -.02em;
  color: var(--ink);
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-products .pf-hero__lead {
  max-width: 42em;
  margin: 0;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  color: var(--ink-2);
}

.page-products .pf-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 26px 0 0;
  padding: 16px 0 0;
  border-top: 1px dashed var(--pf-hair);
  list-style: none;
}

.page-products .pf-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-products .pf-hero__k {
  font-size: 12px;
  letter-spacing: .06em;
  color: #5f6c76;
  white-space: nowrap;
}

.page-products .pf-hero__v {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 15px;
  color: var(--red-deep);
}

/* ---------- 清单主体 ---------- */
.page-products .pf-catalog {
  padding-block: clamp(38px, 6vw, 76px);
}

.page-products .pf-catalog__inner {
  display: grid;
  gap: 30px;
}

.page-products .pf-rail {
  border: 2px solid var(--ink);
  background: var(--sand-light);
  padding: 16px 14px;
  box-shadow: 4px 4px 0 rgba(166, 58, 40, .22);
}

.page-products .pf-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: #5d6b76;
}

.page-products .pf-rail__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .pf-rail__list a {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 6px;
  align-items: baseline;
  padding: 6px 6px;
  font-size: 13px;
  color: var(--ink-2);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: border-color .18s ease, background-color .18s ease, color .18s ease;
}

.page-products .pf-rail__list a:hover,
.page-products .pf-rail__list a:focus-visible {
  border-left-color: var(--red);
  background: rgba(166, 58, 40, .09);
  color: var(--red-deep);
}

.page-products .pf-rail__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  font-weight: 700;
  color: var(--red);
}

.page-products .pf-rail__fig {
  margin: 16px 0 0;
}

.page-products .pf-rail__fig img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--pf-hair);
}

.page-products .pf-catalog__title {
  margin: 12px 0 14px;
  font-size: clamp(26px, 3.6vw, 40px);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.1;
  color: var(--ink);
}

.page-products .pf-catalog__lead {
  max-width: 44em;
  margin: 0 0 26px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-products .pf-list {
  display: grid;
}

.page-products .pf-item {
  border-top: 1px solid var(--pf-hair);
}

.page-products .pf-item:last-child {
  border-bottom: 1px solid var(--pf-hair);
}

.page-products .pf-item > summary {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) 20px;
  align-items: center;
  gap: 10px;
  padding: 16px 6px;
  cursor: pointer;
  list-style: none;
  transition: background-color .18s ease;
}

.page-products .pf-item > summary::-webkit-details-marker {
  display: none;
}

.page-products .pf-item > summary:hover,
.page-products .pf-item > summary:focus-visible {
  background: rgba(227, 192, 138, .3);
}

.page-products .pf-item__num {
  display: inline-block;
  padding: 3px 4px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .02em;
  text-align: center;
  color: var(--paper);
  background: var(--red);
}

.page-products .pf-item__name {
  font-size: clamp(16px, 1.9vw, 19px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-products .pf-item__chev {
  justify-self: end;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--red);
  border-bottom: 2px solid var(--red);
  transform: rotate(45deg);
  transition: transform .2s ease;
}

.page-products .pf-item[open] .pf-item__chev {
  transform: rotate(-135deg);
}

.page-products .pf-item__body {
  padding: 0 6px 20px;
}

.page-products .pf-item__desc {
  max-width: 60ch;
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-2);
}

.page-products .pf-item__use {
  max-width: 60ch;
  margin: 0;
  padding-left: 10px;
  border-left: 3px solid var(--sand);
  font-size: 13px;
  line-height: 1.7;
  color: #5f6c76;
}

/* ---------- 版本面板 ---------- */
.page-products .pf-version {
  padding-block: clamp(40px, 6vw, 80px);
}

.page-products .pf-version__grid {
  display: grid;
  gap: 28px;
}

.page-products .pf-version__title {
  margin: 12px 0 18px;
  font-size: clamp(28px, 4.4vw, 52px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-products .pf-version__p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(251, 246, 238, .84);
}

.page-products .pf-version__p a {
  color: var(--mint);
  text-underline-offset: 3px;
}

.page-products .pf-panel {
  border: 2px solid var(--mint);
  background: var(--ink);
  padding: clamp(20px, 3vw, 30px);
  box-shadow: 8px 8px 0 rgba(53, 240, 192, .18);
}

.page-products .pf-panel__k {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--grey);
}

.page-products .pf-panel__ver {
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(38px, 7vw, 60px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--mint);
}

.page-products .pf-readout {
  margin: 0;
  border-top: 1px solid rgba(124, 140, 153, .32);
}

.page-products .pf-readout > div {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 14px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(124, 140, 153, .32);
}

.page-products .pf-readout dt {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--grey);
}

.page-products .pf-readout dd {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  font-weight: 700;
  color: var(--paper);
}

.page-products .pf-panel__where {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--sand);
}

.page-products .pf-version__fig {
  margin: clamp(28px, 4vw, 44px) 0 0;
}

.page-products .pf-version__fig img {
  border: 1px solid rgba(124, 140, 153, .35);
}

/* ---------- 三步自查 ---------- */
.page-products .pf-check {
  padding-block: clamp(38px, 6vw, 76px);
}

.page-products .pf-check__title {
  margin: 12px 0 14px;
  font-size: clamp(26px, 4vw, 46px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-products .pf-check__lead {
  max-width: 46em;
  margin: 0 0 26px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-products .pf-steps {
  display: grid;
  gap: 14px;
}

.page-products .pf-step {
  border: 2px solid var(--ink);
  background: var(--paper);
  box-shadow: 4px 4px 0 rgba(122, 36, 24, .85);
}

.page-products .pf-step > summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  background: var(--sand-light);
}

.page-products .pf-step > summary::-webkit-details-marker {
  display: none;
}

.page-products .pf-step__n {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--red);
  white-space: nowrap;
}

.page-products .pf-step__t {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.page-products .pf-step__body {
  padding: 14px 16px 18px;
}

.page-products .pf-step__p {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-products .pf-step__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: #5f6c76;
}

.page-products .pf-table {
  width: 100%;
  margin-top: 12px;
  border-collapse: collapse;
  font-size: 13px;
}

.page-products .pf-table__cap {
  padding-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-align: left;
  color: #5d6b76;
}

.page-products .pf-table th,
.page-products .pf-table td {
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid var(--pf-hair);
}

.page-products .pf-table thead th {
  font-size: 11px;
  letter-spacing: .08em;
  color: #5d6b76;
}

.page-products .pf-table tbody th {
  font-weight: 600;
  color: var(--ink-2);
}

.page-products .pf-table tbody td {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--red-deep);
}

.page-products .pf-check__more {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-products .pf-check__more a {
  color: var(--red-deep);
  text-underline-offset: 3px;
}

/* ---------- 兼容范围 ---------- */
.page-products .pf-compat {
  padding-block: clamp(38px, 6vw, 76px);
}

.page-products .pf-compat__grid {
  display: grid;
  gap: 26px;
}

.page-products .pf-compat__title {
  margin: 12px 0 16px;
  font-size: clamp(25px, 3.6vw, 40px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-products .pf-compat__p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--ink-2);
}

.page-products .pf-compat__p a {
  color: var(--red-deep);
  text-underline-offset: 3px;
}

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

.page-products .pf-chips li {
  padding: 5px 11px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--ink-2);
  background: var(--sand-light);
  border: 2px solid var(--ink);
}

.page-products .pf-compat__fig {
  margin: 0;
  border: 2px solid var(--ink);
  background: var(--sand-light);
  padding: 8px;
  box-shadow: var(--pf-shadow);
}

/* ---------- 轮次入口 ---------- */
.page-products .pf-rounds-sec {
  padding-block: clamp(38px, 6vw, 76px);
}

.page-products .pf-rounds__title {
  margin: 12px 0 14px;
  font-size: clamp(26px, 4vw, 44px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-products .pf-rounds__lead {
  max-width: 44em;
  margin: 0 0 26px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(251, 246, 238, .84);
}

.page-products .pf-rounds {
  display: grid;
  gap: 14px;
}

.page-products .pf-round {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 18px 18px 20px;
  background: var(--ink-2);
  border: 2px solid var(--sand);
  text-decoration: none;
  box-shadow: 5px 5px 0 var(--red);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.page-products .pf-round:hover,
.page-products .pf-round:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--red-deep);
  border-color: var(--mint);
}

.page-products .pf-round__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mint);
}

.page-products .pf-round__t {
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-products .pf-round__m {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--grey);
}

.page-products .pf-round__go {
  position: absolute;
  right: 16px;
  bottom: 16px;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--red);
}

.page-products .pf-rounds__fig {
  margin: clamp(26px, 4vw, 40px) 0 0;
}

.page-products .pf-rounds__fig img {
  border: 1px solid rgba(124, 140, 153, .35);
}

.page-products .pf-rounds__more {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(251, 246, 238, .78);
}

.page-products .pf-rounds__more a {
  color: var(--mint);
  text-underline-offset: 3px;
}

/* ---------- 响应与去向 ---------- */
.page-products .pf-response {
  padding-block: clamp(38px, 6vw, 76px);
}

.page-products .pf-response__grid {
  display: grid;
  gap: 26px;
}

.page-products .pf-response__fig {
  margin: 0;
  border: 2px solid var(--ink);
  background: var(--paper);
  padding: 8px;
  box-shadow: var(--pf-shadow);
}

.page-products .pf-response__title {
  margin: 12px 0 16px;
  font-size: clamp(25px, 3.8vw, 42px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-products .pf-response__p {
  max-width: 44em;
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--ink-2);
}

.page-products .pf-lanes {
  display: grid;
  gap: 14px;
}

.page-products .pf-lane {
  padding: 18px;
  background: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 rgba(122, 36, 24, .8);
}

.page-products .pf-lane--solid {
  background: var(--sand-light);
}

.page-products .pf-lane__k {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--red);
}

.page-products .pf-lane__t {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.page-products .pf-lane__d {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-2);
}

.page-products .pf-lane .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  text-decoration: none;
}

.page-products .pf-response__note {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: #5f6c76;
}

.page-products .pf-response__note a {
  color: var(--red-deep);
  text-underline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-products .pf-rail__list {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

@media (min-width: 900px) {
  .page-products .pf-catalog__inner {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-products .pf-rail {
    position: sticky;
    top: 96px;
  }

  .page-products .pf-item__body {
    padding-left: 66px;
  }

  .page-products .pf-version__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-products .pf-compat__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: clamp(28px, 4vw, 52px);
    align-items: center;
  }

  .page-products .pf-response__grid {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    gap: clamp(28px, 4vw, 52px);
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-products .pf-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pf-item__chev,
  .page-products .pf-round,
  .page-products .pf-rail__list a,
  .page-products .pf-item > summary {
    transition-duration: .001ms !important;
  }

  .page-products .pf-hero__title {
    transform: none;
  }
}