.page-products {
  --pp-band-gap: var(--sp-6);
  background: var(--c-hawk);
  color: var(--c-paper);
  overflow-x: clip;
}

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

.page-products h1,
.page-products h2,
.page-products h3,
.page-products h4 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: 0.04em;
  line-height: 1.16;
  margin: 0;
}

/* ---------- 首屏 ---------- */
.pp-hero {
  position: relative;
  padding: var(--sp-4) 0 var(--sp-9);
  background:
    radial-gradient(120% 90% at 88% -12%, rgba(201, 162, 39, 0.22), transparent 62%),
    radial-gradient(90% 70% at 0% 110%, rgba(31, 58, 77, 0.55), transparent 60%),
    var(--c-hawk);
  border-bottom: var(--line) solid var(--c-ink);
}

.pp-hero__inner {
  position: relative;
}

.pp-hero .eyebrow {
  margin: var(--sp-3) 0 var(--sp-2);
}

.pp-hero__title {
  font-size: clamp(40px, 10vw, 104px);
  letter-spacing: 0.03em;
  line-height: 1.06;
  max-width: 14em;
  text-shadow: 4px 4px 0 rgba(20, 16, 12, 0.45);
}

.pp-hero__mark {
  position: absolute;
  right: 0;
  top: 30%;
  writing-mode: vertical-rl;
  letter-spacing: 0.32em;
  font-size: var(--fs-12);
  color: var(--c-gold);
  display: none;
}

.pp-hero__bottom {
  margin-top: var(--sp-6);
  padding-top: var(--sp-3);
  border-top: 1px solid rgba(201, 162, 39, 0.45);
  display: grid;
  gap: var(--sp-4);
}

.pp-hero__lead {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.8;
  max-width: 38em;
  color: rgba(243, 235, 221, 0.92);
}

.pp-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-2);
}

.pp-fact {
  border-left: 3px solid var(--c-gold);
  padding-left: var(--sp-2);
}

.pp-fact__num {
  display: block;
  font-family: var(--font-display);
  font-size: var(--fs-24);
  font-weight: 900;
  color: var(--c-gold-lite);
  letter-spacing: 0.02em;
}

.pp-fact__label {
  display: block;
  margin-top: 2px;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--c-stone);
}

/* ---------- 入口分层 ---------- */
.pp-layer {
  background: var(--c-dusk);
  padding: var(--sp-9) 0;
  border-bottom: var(--line) solid var(--c-ink);
}

.pp-layer__head {
  max-width: 46em;
}

.pp-layer__lead {
  margin: var(--sp-3) 0 0;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: rgba(243, 235, 221, 0.84);
  max-width: 38em;
}

.pp-layer__body {
  margin-top: var(--sp-6);
  display: grid;
  gap: var(--sp-4);
}

.pp-layer__media {
  margin: 0;
  border: var(--line) solid var(--c-ink);
  box-shadow: var(--shadow-hard);
  background: var(--c-feather);
  padding: var(--sp-2);
}

.pp-layer__media img {
  width: 100%;
  object-fit: cover;
}

.pp-layer__media figcaption {
  margin-top: var(--sp-2);
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--c-stone);
}

.pp-fold {
  border: var(--line) solid var(--c-ink);
  box-shadow: var(--shadow-hard);
  background: var(--c-hawk);
  transition: box-shadow 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.pp-fold + .pp-fold {
  margin-top: var(--sp-3);
}

.pp-fold--high {
  background: linear-gradient(160deg, var(--c-feather), var(--c-hawk) 72%);
  border-color: var(--c-gold);
}

.pp-fold--mid {
  background: var(--c-feather);
}

.pp-fold--low {
  background: rgba(20, 16, 12, 0.62);
}

.pp-fold:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hard-lg);
}

.pp-fold__summary {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: var(--sp-2);
  align-items: center;
  padding: var(--sp-3) var(--sp-3);
  cursor: pointer;
  list-style: none;
}

.pp-fold__summary::-webkit-details-marker {
  display: none;
}

.pp-fold__summary::after {
  content: "+";
  font-family: var(--font-display);
  font-size: var(--fs-24);
  font-weight: 900;
  color: var(--c-gold);
  line-height: 1;
}

.pp-fold[open] .pp-fold__summary::after {
  content: "–";
}

.pp-fold__index {
  display: inline-block;
  padding: 2px 8px;
  background: var(--c-gold);
  color: var(--c-ink);
  font-family: var(--font-display);
  font-size: var(--fs-12);
  font-weight: 900;
  letter-spacing: 0.08em;
}

.pp-fold__name {
  font-family: var(--font-display);
  font-size: var(--fs-18);
  font-weight: 900;
  letter-spacing: 0.04em;
}

.pp-fold__meta {
  font-size: var(--fs-12);
  color: var(--c-stone);
  letter-spacing: 0.02em;
  text-align: right;
}

.pp-fold__body {
  padding: var(--sp-2) var(--sp-3) var(--sp-3);
  border-top: 1px dashed rgba(201, 162, 39, 0.55);
  margin: 0 var(--sp-3) var(--sp-3);
}

.pp-fold__body > p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: rgba(243, 235, 221, 0.86);
}

.pp-fold__list {
  list-style: none;
  margin: var(--sp-2) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.pp-fold__item {
  position: relative;
  padding-left: var(--sp-3);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: rgba(243, 235, 221, 0.88);
}

.pp-fold__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 8px;
  height: 2px;
  background: var(--c-gold);
}

.pp-fold__item strong {
  color: var(--c-gold-lite);
  font-weight: 900;
  margin-right: 4px;
}

/* ---------- 高频路径 ---------- */
.pp-path {
  background: var(--c-paper);
  color: var(--c-ink);
  padding: var(--sp-9) 0;
  border-bottom: var(--line) solid var(--c-ink);
  background-image: repeating-linear-gradient(135deg, rgba(20, 16, 12, 0.035) 0 2px, transparent 2px 12px);
}

.pp-path .eyebrow {
  color: var(--c-ochre);
}

.pp-path__head .display-lg {
  color: var(--c-ink);
  margin-top: var(--sp-2);
}

.pp-path__media {
  margin: var(--sp-4) 0 0;
  border: var(--line) solid var(--c-ink);
  box-shadow: var(--shadow-hard);
  background: var(--c-hawk);
}

.pp-path__media img {
  width: 100%;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.05);
}

.pp-path__grid {
  margin-top: var(--sp-6);
  display: grid;
  gap: var(--sp-4);
}

.pp-path__card {
  border: var(--line) solid var(--c-ink);
  background: rgba(255, 255, 255, 0.55);
  box-shadow: var(--shadow-soft);
  padding: var(--sp-3);
}

.pp-path__card-title {
  font-size: var(--fs-24);
  color: var(--c-ink);
  padding-bottom: var(--sp-1);
  border-bottom: 3px solid var(--c-gold);
  display: inline-block;
}

.pp-steps {
  counter-reset: ppstep;
  list-style: none;
  margin: var(--sp-3) 0 0;
  padding: 0;
  display: grid;
  gap: var(--sp-3);
}

.pp-steps__item {
  counter-increment: ppstep;
  position: relative;
  padding-left: var(--sp-6);
}

.pp-steps__item::before {
  content: counter(ppstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--c-gold);
  color: var(--c-ink);
  font-family: var(--font-display);
  font-size: var(--fs-12);
  font-weight: 900;
  display: grid;
  place-items: center;
}

.pp-steps__item::after {
  content: "";
  position: absolute;
  left: 13px;
  top: 32px;
  bottom: -18px;
  border-left: 2px dashed rgba(201, 162, 39, 0.85);
}

.pp-steps__item:last-child::after {
  display: none;
}

.pp-steps__title {
  font-size: var(--fs-16);
  color: var(--c-ink);
  margin-bottom: 4px;
}

.pp-steps p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: rgba(20, 16, 12, 0.78);
}

.pp-path__branch {
  margin: var(--sp-3) 0 0;
  padding-left: var(--sp-2);
  border-left: 3px solid var(--c-canyon);
  font-size: var(--fs-14);
  line-height: 1.75;
  color: rgba(20, 16, 12, 0.8);
}

/* ---------- 设备适配 ---------- */
.pp-device {
  background: var(--c-feather);
  padding: var(--sp-9) 0;
  border-bottom: var(--line) solid var(--c-ink);
}

.pp-device__head {
  max-width: 46em;
}

.pp-device__media {
  margin: var(--sp-4) 0 0;
  border: var(--line) solid var(--c-ink);
  box-shadow: var(--shadow-hard);
  background: var(--c-dusk);
}

.pp-device__media img {
  width: 100%;
  object-fit: cover;
}

.pp-switch {
  margin-top: var(--sp-6);
}

.pp-switch__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-1);
}

.pp-switch__tab {
  padding: 10px 18px;
  border: var(--line) solid var(--c-gold);
  color: var(--c-paper);
  background: transparent;
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease;
}

.pp-switch__tab:hover {
  border-color: var(--c-gold-lite);
  color: var(--c-gold-lite);
}

.page-products #pp-dev-1:checked ~ .pp-switch__tabs label[for="pp-dev-1"],
.page-products #pp-dev-2:checked ~ .pp-switch__tabs label[for="pp-dev-2"],
.page-products #pp-dev-3:checked ~ .pp-switch__tabs label[for="pp-dev-3"] {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: var(--c-ink);
}

.page-products #pp-dev-1:focus-visible ~ .pp-switch__tabs label[for="pp-dev-1"],
.page-products #pp-dev-2:focus-visible ~ .pp-switch__tabs label[for="pp-dev-2"],
.page-products #pp-dev-3:focus-visible ~ .pp-switch__tabs label[for="pp-dev-3"] {
  outline: 3px solid var(--c-gold-lite);
  outline-offset: 2px;
}

.pp-panels {
  margin-top: var(--sp-3);
}

.pp-panel {
  display: none;
  gap: var(--sp-3);
  padding: var(--sp-3);
  border: var(--line) solid var(--c-ink);
  background: var(--c-hawk);
  box-shadow: var(--shadow-hard);
}

.page-products #pp-dev-1:checked ~ .pp-panels .pp-panel:nth-child(1),
.page-products #pp-dev-2:checked ~ .pp-panels .pp-panel:nth-child(2),
.page-products #pp-dev-3:checked ~ .pp-panels .pp-panel:nth-child(3) {
  display: grid;
}

.pp-panel__screen {
  border: var(--line) solid var(--c-gold);
  padding: var(--sp-2);
  margin: 0 auto;
  width: 100%;
  aspect-ratio: 9 / 16;
  max-width: 180px;
  display: grid;
  align-content: start;
  gap: 8px;
  background: rgba(31, 58, 77, 0.55);
}

.page-products #pp-dev-2:checked ~ .pp-panels .pp-panel:nth-child(2) .pp-panel__screen {
  max-width: 230px;
  aspect-ratio: 3 / 4;
}

.page-products #pp-dev-3:checked ~ .pp-panels .pp-panel:nth-child(3) .pp-panel__screen {
  max-width: 320px;
  aspect-ratio: 16 / 10;
}

.pp-panel__bar {
  display: block;
  height: 10px;
  width: 46%;
  background: var(--c-gold);
}

.pp-panel__line {
  display: block;
  height: 6px;
  background: rgba(243, 235, 221, 0.42);
}

.pp-panel__line:nth-of-type(4) {
  width: 72%;
}

.pp-panel__ruler {
  display: block;
  margin-top: var(--sp-2);
  height: 12px;
  background-image: repeating-linear-gradient(90deg, var(--c-stone) 0 1px, transparent 1px 12px);
  border-bottom: 1px solid rgba(140, 131, 119, 0.6);
}

.pp-panel__title {
  font-size: var(--fs-18);
  color: var(--c-gold-lite);
  margin-bottom: var(--sp-1);
}

.pp-panel__text p {
  margin: 0 0 var(--sp-2);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: rgba(243, 235, 221, 0.86);
}

.pp-panel__text p:last-child {
  margin-bottom: 0;
}

/* ---------- 多设备衔接 ---------- */
.pp-sync {
  background: var(--c-dusk);
  padding: var(--sp-9) 0;
  border-bottom: var(--line) solid var(--c-ink);
}

.pp-sync__grid {
  display: grid;
  gap: var(--sp-4);
}

.pp-sync__text .display-lg {
  margin-top: var(--sp-2);
}

.pp-sync__text > p {
  margin: var(--sp-3) 0 0;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: rgba(243, 235, 221, 0.86);
  max-width: 36em;
}

.pp-sync__list {
  list-style: none;
  margin: var(--sp-3) 0 0;
  padding: 0;
  display: grid;
  gap: var(--sp-2);
}

.pp-sync__list li {
  position: relative;
  padding-left: var(--sp-3);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: rgba(243, 235, 221, 0.88);
}

.pp-sync__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.8em;
  width: 10px;
  height: 10px;
  border: 2px solid var(--c-gold);
  border-radius: 50%;
}

.pp-sync__media {
  margin: 0;
  border: var(--line) solid var(--c-ink);
  box-shadow: var(--shadow-hard);
  background: var(--c-hawk);
}

.pp-sync__media img {
  width: 100%;
  object-fit: cover;
}

.pp-sync__media figcaption {
  padding: var(--sp-2);
  font-size: var(--fs-12);
  color: var(--c-stone);
}

.pp-copy {
  margin-top: var(--sp-4);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-2);
}

.pp-copy__hint {
  margin: 0;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--c-stone);
  max-width: 28em;
}

/* ---------- 帮助主题带 ---------- */
.pp-help {
  position: relative;
  border-bottom: var(--line) solid var(--c-ink);
}

.pp-help__band {
  position: relative;
  padding: var(--sp-9) 0;
  background: var(--c-dusk);
  overflow: hidden;
}

.pp-help__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
}

.pp-help__inner {
  position: relative;
}

.pp-help__inner .display-lg {
  margin-top: var(--sp-2);
  max-width: 16em;
}

.pp-help__lead {
  margin: var(--sp-3) 0 0;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: rgba(243, 235, 221, 0.88);
  max-width: 38em;
}

.pp-help__list {
  list-style: none;
  margin: var(--sp-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--sp-2);
}

.pp-help__item {
  border: var(--line) solid var(--c-gold);
  background: rgba(42, 29, 21, 0.82);
  padding: var(--sp-3);
  transition: box-shadow 160ms ease, transform 160ms ease;
}

.pp-help__item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

.pp-help__link {
  display: block;
  font-family: var(--font-display);
  font-size: var(--fs-18);
  font-weight: 900;
  letter-spacing: 0.03em;
  color: var(--c-gold-lite);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.pp-help__link:hover,
.pp-help__link:focus-visible {
  border-bottom-color: var(--c-gold-lite);
}

.pp-help__item p {
  margin: var(--sp-1) 0 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: rgba(243, 235, 221, 0.82);
}

.pp-help__more {
  margin: var(--sp-4) 0 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: rgba(243, 235, 221, 0.85);
}

.pp-help__more a {
  color: var(--c-gold-lite);
  text-decoration: underline;
  text-underline-offset: 3px;
  margin: 0 2px;
}

/* ---------- 收尾 ---------- */
.pp-cta {
  background: var(--c-ochre);
  padding: var(--sp-6) 0;
}

.pp-cta__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
}

.pp-cta__row p {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--fs-18);
  font-weight: 900;
  letter-spacing: 0.03em;
  line-height: 1.5;
  max-width: 30em;
  color: var(--c-paper);
}

.pp-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .pp-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .pp-panel {
    align-items: center;
  }

  .pp-panel__screen {
    margin: 0;
  }
}

@media (min-width: 900px) {
  .pp-hero {
    padding-top: var(--sp-6);
  }

  .pp-hero__mark {
    display: block;
  }

  .pp-hero__title {
    max-width: 11em;
  }

  .pp-hero__bottom {
    grid-template-columns: 1.35fr 1fr;
    gap: var(--sp-6);
    align-items: start;
  }

  .pp-layer__body {
    grid-template-columns: 1.6fr 0.9fr;
    align-items: start;
    gap: var(--sp-6);
  }

  .pp-path__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--sp-6);
  }

  .pp-panel {
    grid-template-columns: 0.85fr 1.15fr;
    gap: var(--sp-4);
    padding: var(--sp-4);
  }

  .pp-sync__grid {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
    gap: var(--sp-6);
  }

  .pp-help__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .pp-hero__title {
    font-size: clamp(72px, 8.4vw, 120px);
  }

  .pp-fold__name {
    font-size: var(--fs-24);
  }

  .pp-path__card {
    padding: var(--sp-4);
  }
}

@media (prefers-reduced-motion: reduce) {
  .pp-fold,
  .pp-help__item,
  .pp-switch__tab {
    transition: none;
  }

  .pp-fold:hover,
  .pp-help__item:hover {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>