.page-products {
  --pf-line: rgba(216, 207, 192, .6);
  --pf-line-dark: rgba(127, 163, 150, .26);
  --pf-ink-soft: rgba(10, 20, 24, .74);
  --pf-ivory-soft: rgba(255, 248, 236, .78);
  background: var(--paper);
  color: var(--night);
  font-family: var(--f-body);
  overflow-x: clip;
}

/* ---------- HERO ---------- */
.page-products .pf-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--night);
  color: var(--ivory);
  padding: clamp(84px, 13vw, 152px) 0 clamp(52px, 7vw, 92px);
}

.page-products .pf-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -34%;
  right: -20%;
  width: 82%;
  height: 176%;
  background: linear-gradient(148deg, rgba(201, 162, 39, .28) 0%, rgba(184, 115, 51, .14) 38%, rgba(10, 20, 24, 0) 72%);
  border-left: 1px solid rgba(201, 162, 39, .34);
  transform: rotate(11deg);
  pointer-events: none;
}

.page-products .pf-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  background-image:
    linear-gradient(rgba(127, 163, 150, .16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(127, 163, 150, .16) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(120% 92% at 16% 10%, #000 0%, transparent 74%);
  mask-image: radial-gradient(120% 92% at 16% 10%, #000 0%, transparent 74%);
  pointer-events: none;
}

.page-products .pf-hero .crumb {
  color: var(--mist);
  font-family: var(--f-mono);
  font-size: .7rem;
  letter-spacing: .14em;
}

.page-products .pf-hero .crumb a {
  color: var(--gold-hi);
  text-decoration: none;
}

.page-products .pf-hero__grid {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  margin-top: clamp(26px, 4vw, 46px);
}

.page-products .pf-hero__title {
  font-family: var(--f-display);
  font-weight: 200;
  font-size: clamp(2rem, 3.1vw + 1.3rem, 4.4rem);
  line-height: 1.06;
  letter-spacing: -.02em;
  margin: 16px 0 0;
  color: var(--ivory);
  text-wrap: balance;
}

.page-products .pf-hero__lede {
  max-width: 52ch;
  margin: 22px 0 0;
  font-size: clamp(1rem, .5vw + .9rem, 1.16rem);
  line-height: 1.92;
  color: var(--pf-ivory-soft);
}

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

/* 保修阶梯面板 */
.page-products .pf-spec {
  position: relative;
  border: 1px solid rgba(201, 162, 39, .46);
  background: rgba(14, 43, 36, .62);
  padding: 24px 20px 20px;
  box-shadow: var(--shadow-stamp);
}

.page-products .pf-spec__title {
  margin: 0 0 18px;
  font-family: var(--f-mono);
  font-size: .68rem;
  letter-spacing: .18em;
  color: var(--gold-hi);
  text-transform: uppercase;
}

.page-products .pf-ladder {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .pf-ladder__row {
  display: grid;
  grid-template-columns: minmax(72px, auto) auto 1fr;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--pf-line-dark);
}

.page-products .pf-ladder__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-products .pf-ladder__tier {
  font-family: var(--f-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--mist);
}

.page-products .pf-ladder__num {
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: clamp(1.6rem, 5vw, 2.3rem);
  line-height: 1;
  color: var(--gold);
}

.page-products .pf-ladder__num i {
  font-style: normal;
  font-size: .46em;
  margin-left: .12em;
  color: var(--gold-hi);
}

.page-products .pf-ladder__bar {
  display: block;
  min-width: 60px;
  height: 6px;
  background: rgba(127, 163, 150, .2);
}

.page-products .pf-ladder__bar > span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--copper), var(--gold-hi));
}

.page-products .pf-ladder__row:nth-child(1) .pf-ladder__bar > span { width: 20%; }
.page-products .pf-ladder__row:nth-child(2) .pf-ladder__bar > span { width: 40%; }
.page-products .pf-ladder__row:nth-child(3) .pf-ladder__bar > span { width: 60%; }
.page-products .pf-ladder__row:nth-child(4) .pf-ladder__bar > span { width: 100%; }

.page-products .pf-spec__foot {
  margin: 20px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--pf-line-dark);
  font-size: .82rem;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- BAND ---------- */
.page-products .pf-band {
  background: var(--deep);
  padding: 0 0 clamp(48px, 7vw, 88px);
}

.page-products .pf-switch {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding: 0 0 clamp(20px, 3vw, 32px);
}

.page-products .pf-switch__label {
  font-family: var(--f-mono);
  font-size: .68rem;
  letter-spacing: .18em;
  color: var(--mist);
}

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

.page-products .pf-switch__item {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  border: 1px solid rgba(127, 163, 150, .42);
  background: rgba(10, 20, 24, .4);
  color: var(--paper);
  font-family: var(--f-display);
  font-size: .92rem;
  letter-spacing: .04em;
  text-decoration: none;
  transition: background-color .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}

.page-products .pf-switch__item:hover,
.page-products .pf-switch__item:focus-visible {
  background: var(--gold);
  border-color: var(--gold-hi);
  color: var(--night);
}

.page-products .pf-band__fig {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(201, 162, 39, .4);
  box-shadow: 0 18px 44px rgba(0, 0, 0, .45);
}

.page-products .pf-band__fig img {
  display: block;
  width: 100%;
  height: clamp(180px, 34vw, 430px);
  object-fit: cover;
  filter: saturate(.96) contrast(1.05);
}

.page-products .pf-band__fig::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 100% at 50% 0%, rgba(201, 162, 39, .16), transparent 62%),
    linear-gradient(180deg, transparent 52%, rgba(10, 20, 24, .66));
  pointer-events: none;
}

.page-products .pf-band__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  padding: 14px 18px;
  font-family: var(--f-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  color: var(--gold-hi);
}

/* ---------- SECTION SHELL ---------- */
.page-products .pf-sec {
  position: relative;
  padding: clamp(56px, 9vw, 112px) 0;
}

.page-products .pf-sec--paper {
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--pf-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--pf-line) 1px, transparent 1px);
  background-size: 88px 88px;
}

.page-products .pf-sec--deep {
  background: var(--deep);
  color: var(--ivory);
}

.page-products .pf-sec--night {
  background: var(--night);
  color: var(--ivory);
}

.page-products .pf-sechead {
  max-width: 64ch;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-products .pf-sechead--tight {
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-products .pf-h2 {
  font-family: var(--f-display);
  font-weight: 200;
  font-size: clamp(1.6rem, 2.6vw + .9rem, 2.7rem);
  line-height: 1.16;
  letter-spacing: -.015em;
  margin: 10px 0 0;
  color: var(--deep);
}

.page-products .pf-sec--deep .pf-h2,
.page-products .pf-sec--night .pf-h2 {
  color: var(--ivory);
}

.page-products .pf-lede {
  margin: 14px 0 0;
  font-size: 1.02rem;
  line-height: 1.87;
  color: var(--pf-ink-soft);
}

.page-products .pf-sec--deep .pf-lede,
.page-products .pf-sec--night .pf-lede {
  color: var(--pf-ivory-soft);
}

.page-products .pf-prose {
  margin: 16px 0 0;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--pf-ivory-soft);
}

.page-products .pf-coltitle {
  margin: 0 0 16px;
  font-family: var(--f-display);
  font-size: 1.08rem;
  letter-spacing: .04em;
  color: var(--gold-hi);
}

.page-products .pf-note {
  margin: clamp(20px, 3vw, 30px) 0 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--pf-ink-soft);
}

.page-products .pf-note a,
.page-products .pf-aside a {
  color: var(--copper);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .pf-note--dark {
  margin-top: clamp(28px, 4vw, 44px);
  color: var(--pf-ivory-soft);
}

.page-products .pf-note--dark a {
  color: var(--gold-hi);
}

/* ---------- MATRIX ---------- */
.page-products .pf-matrixwrap {
  overflow-x: auto;
  background: var(--ivory);
  border: 1px solid var(--copper);
  box-shadow: var(--shadow-stamp);
  -webkit-overflow-scrolling: touch;
}

.page-products .pf-matrix {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: .95rem;
}

.page-products .pf-matrix caption {
  caption-side: bottom;
  text-align: left;
  padding: 12px 16px;
  background: rgba(216, 207, 192, .3);
  font-family: var(--f-mono);
  font-size: .66rem;
  letter-spacing: .08em;
  color: var(--copper);
}

.page-products .pf-matrix thead th {
  background: var(--deep);
  color: var(--gold-hi);
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 1rem;
  padding: 16px;
  text-align: left;
  border-bottom: 1px solid var(--copper);
  white-space: nowrap;
}

.page-products .pf-matrix thead th:first-child {
  color: var(--mist);
  font-family: var(--f-mono);
  font-size: .7rem;
  letter-spacing: .16em;
}

.page-products .pf-matrix .pf-th {
  display: block;
}

.page-products .pf-matrix thead small {
  display: block;
  margin-top: 4px;
  font-family: var(--f-mono);
  font-size: .64rem;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-products .pf-matrix tbody th {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  white-space: nowrap;
  background: rgba(216, 207, 192, .34);
  border-bottom: 1px solid var(--edge);
  font-family: var(--f-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--copper);
}

.page-products .pf-matrix tbody td {
  padding: 14px 16px;
  vertical-align: top;
  line-height: 1.7;
  color: var(--night);
  border-bottom: 1px solid var(--edge);
  border-left: 1px solid rgba(216, 207, 192, .7);
}

.page-products .pf-matrix tbody tr:nth-child(even) td {
  background: rgba(216, 207, 192, .22);
}

.page-products .pf-matrix td.is-diff {
  position: relative;
  border: 1px solid var(--copper);
  font-weight: 700;
  color: var(--deep);
  box-shadow: inset 0 0 0 1px rgba(184, 115, 51, .22);
}

.page-products .pf-matrix td.is-diff::after {
  content: "差异";
  position: absolute;
  top: 0;
  right: 0;
  padding: 2px 6px;
  background: var(--copper);
  color: var(--ivory);
  font-family: var(--f-mono);
  font-size: .58rem;
  letter-spacing: .1em;
}

/* ---------- TIER LIST ---------- */
.page-products .pf-sec--tiers {
  padding-top: 0;
}

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

.page-products .pf-tier {
  display: grid;
  gap: 18px;
  padding: clamp(28px, 4vw, 46px) 0;
  border-bottom: 1px solid var(--edge);
}

.page-products .pf-tier__no {
  display: block;
  font-family: var(--f-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--copper);
}

.page-products .pf-tier__name {
  font-family: var(--f-display);
  font-weight: 200;
  font-size: clamp(1.9rem, 4.4vw, 3rem);
  line-height: 1;
  letter-spacing: -.02em;
  margin: 8px 0 6px;
  color: var(--deep);
}

.page-products .pf-tier__sub {
  margin: 0;
  font-family: var(--f-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--copper);
}

.page-products .pf-tier__body > p {
  margin: 0 0 16px;
  line-height: 1.9;
  color: var(--pf-ink-soft);
}

.page-products .pf-tier__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-products .pf-tier__list li {
  position: relative;
  padding-left: 20px;
  font-size: .97rem;
  line-height: 1.78;
  color: var(--pf-ink-soft);
}

.page-products .pf-tier__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 8px;
  height: 8px;
  border: 1px solid var(--copper);
  transform: rotate(45deg);
}

.page-products .pf-tier__fig {
  margin: 20px 0 0;
}

.page-products .pf-fig {
  margin: 22px 0 0;
}

.page-products .pf-tier__fig img,
.page-products .pf-fig img,
.page-products .pf-flowfig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  max-width: 100%;
}

/* ---------- TWO COLUMN ---------- */
.page-products .pf-two {
  display: grid;
  gap: clamp(32px, 5vw, 64px);
}

/* ---------- ACCORDION (details) ---------- */
.page-products .pf-term {
  border: 1px solid rgba(127, 163, 150, .3);
  background: rgba(10, 20, 24, .42);
  margin-bottom: 10px;
}

.page-products .pf-term > summary {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--f-display);
  font-size: 1rem;
  color: var(--ivory);
}

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

.page-products .pf-term > summary::after {
  content: "+";
  font-family: var(--f-mono);
  font-size: 1.05rem;
  color: var(--gold);
  line-height: 1;
}

.page-products .pf-term[open] > summary::after {
  content: "–";
}

.page-products .pf-term[open] > summary {
  border-bottom: 1px solid rgba(127, 163, 150, .24);
}

.page-products .pf-term__code {
  font-family: var(--f-mono);
  font-size: .66rem;
  letter-spacing: .14em;
  color: var(--copper);
  border: 1px solid rgba(184, 115, 51, .55);
  padding: 3px 7px;
  white-space: nowrap;
}

.page-products .pf-term__body {
  padding: 14px 16px 16px;
  font-size: .94rem;
  line-height: 1.85;
  color: var(--pf-ivory-soft);
}

.page-products .pf-aside {
  margin: 20px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--copper);
  font-size: .9rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-products .pf-aside a {
  color: var(--gold-hi);
}

/* ---------- LIST 3 ---------- */
.page-products .pf-list3 {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .pf-list3__item {
  padding: 22px 0;
  border-top: 1px solid var(--edge);
}

.page-products .pf-list3__item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-products .pf-list3__k {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 9px;
  border: 1px solid var(--copper);
  font-family: var(--f-mono);
  font-size: .66rem;
  letter-spacing: .16em;
  color: var(--copper);
}

.page-products .pf-list3__t {
  margin: 0 0 8px;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 1.14rem;
  color: var(--deep);
}

.page-products .pf-list3__item p {
  margin: 0;
  line-height: 1.85;
  color: var(--pf-ink-soft);
}

/* ---------- FLOW ---------- */
.page-products .pf-flowfig {
  margin: 0 0 clamp(30px, 5vw, 56px);
  border: 1px solid rgba(201, 162, 39, .34);
  overflow: hidden;
}

.page-products .pf-flowfig img {
  height: clamp(160px, 26vw, 320px);
  filter: saturate(.96) contrast(1.05);
}

.page-products .pf-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .pf-steps__item {
  position: relative;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  padding: 18px 0;
}

.page-products .pf-steps__item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 62px;
  bottom: -18px;
  width: 1px;
  background: linear-gradient(180deg, rgba(201, 162, 39, .8), rgba(201, 162, 39, .08));
}

.page-products .pf-steps__no {
  justify-self: start;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--gold);
  border-radius: 50%;
  background: rgba(10, 20, 24, .85);
  font-family: var(--f-mono);
  font-size: .8rem;
  color: var(--gold-hi);
}

.page-products .pf-steps__t {
  margin: 8px 0 8px;
  font-family: var(--f-display);
  font-weight: 400;
  font-size: 1.14rem;
  color: var(--ivory);
}

.page-products .pf-steps__body p {
  margin: 0 0 8px;
  font-size: .96rem;
  line-height: 1.85;
  color: var(--pf-ivory-soft);
}

.page-products .pf-steps__who {
  font-family: var(--f-mono);
  font-size: .66rem;
  letter-spacing: .14em;
  color: var(--copper) !important;
  margin: 0;
}

/* ---------- CTA ---------- */
.page-products .pf-cta {
  background: var(--deep);
  padding: clamp(48px, 7vw, 84px) 0;
}

.page-products .pf-cta__inner {
  display: grid;
  gap: 24px;
  padding: clamp(26px, 4vw, 44px);
  border: 1px solid rgba(201, 162, 39, .45);
  background: linear-gradient(135deg, rgba(201, 162, 39, .14), rgba(10, 20, 24, .5) 62%);
  box-shadow: var(--shadow-stamp);
}

.page-products .pf-cta__title {
  margin: 0 0 10px;
  font-family: var(--f-display);
  font-weight: 200;
  font-size: clamp(1.4rem, 2.4vw + .7rem, 2.1rem);
  letter-spacing: -.01em;
  color: var(--ivory);
}

.page-products .pf-cta__text p {
  margin: 0;
  line-height: 1.85;
  color: var(--pf-ivory-soft);
}

.page-products .pf-cta__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 640px) {
  .page-products .pf-ladder__row {
    grid-template-columns: 1fr auto;
  }

  .page-products .pf-ladder__bar {
    grid-column: 1 / -1;
  }

  .page-products .pf-steps__item {
    grid-template-columns: 44px 1fr;
    gap: 14px;
  }

  .page-products .pf-steps__item:not(:last-child)::before {
    left: 21px;
  }
}

@media (min-width: 900px) {
  .page-products .pf-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-products .pf-tier {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: clamp(28px, 4vw, 64px);
    align-items: start;
  }

  .page-products .pf-tier__head {
    position: sticky;
    top: calc(var(--head-h) + 28px);
  }
}

@media (min-width: 960px) {
  .page-products .pf-two {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-products .pf-two--flip {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }

  .page-products .pf-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pf-switch__item {
    transition: none;
  }
}