.page-products {
  --pr-v1: var(--cyan-glow);
  --pr-v2: var(--amber-index);
  --pr-v3: var(--signal-orange);
  color: var(--ink-900);
  background: var(--paper-100);
}

/* ---------- 首屏 ---------- */
.page-products .pr-hero {
  position: relative;
  overflow: hidden;
  padding: 40px 0 36px;
  background: var(--ink-900);
  color: var(--paper-000);
  border-bottom: 2px solid var(--ink-600);
}

.page-products .pr-hero::before {
  content: "";
  position: absolute;
  top: -8%;
  right: 0;
  bottom: -8%;
  width: 56%;
  background: var(--ink-800);
  border-left: 2px solid var(--ink-600);
  transform: skewX(-8deg) translateX(26%);
  pointer-events: none;
}

.page-products .pr-hero::after {
  content: "";
  position: absolute;
  top: -8%;
  right: 0;
  bottom: -8%;
  width: 22%;
  background: var(--signal-orange);
  transform: skewX(-8deg) translateX(72%);
  opacity: .92;
  pointer-events: none;
}

.page-products .pr-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-products .pr-hero__kicker {
  display: inline-block;
  margin: 0 0 14px;
  padding: 4px 10px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ink-900);
  background: var(--signal-orange);
  border: 2px solid var(--signal-orange);
  border-radius: var(--radius);
}

.page-products .pr-hero h1 {
  margin: 0 0 16px;
  font-size: 32px;
  line-height: 42px;
  font-weight: 900;
  letter-spacing: -.01em;
}

.page-products .pr-hero__lede {
  margin: 0 0 24px;
  max-width: 60ch;
  font-size: 16px;
  line-height: 30px;
  color: var(--paper-100);
}

.page-products .pr-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .pr-hero__actions .btn--ghost {
  color: var(--paper-000);
  border-color: var(--paper-000);
  background: transparent;
  box-shadow: var(--shadow-hard-sm);
}

.page-products .pr-hero__stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  margin: 0;
  padding: 2px;
  background: var(--ink-600);
  border: 2px solid var(--ink-600);
  border-radius: var(--radius);
}

.page-products .pr-stat {
  padding: 12px 14px;
  background: var(--ink-900);
}

.page-products .pr-stat dt {
  font-size: 12px;
  line-height: 18px;
  color: var(--steel-400);
  letter-spacing: .04em;
}

.page-products .pr-stat dd {
  margin: 4px 0 0;
  font-size: 24px;
  line-height: 30px;
  font-weight: 700;
  color: var(--paper-000);
}

/* ---------- 索引轨 ---------- */
.page-products .pr-shell {
  padding-top: 32px;
  padding-bottom: 48px;
}

.page-products .pr-rail {
  margin-bottom: 24px;
  padding: 14px 16px;
  background: var(--paper-000);
  border: 2px solid var(--ink-900);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard-sm);
}

.page-products .pr-rail .index-rail__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--steel-400);
}

.page-products .pr-rail .index-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
}

.page-products .pr-rail .index-rail__list li {
  flex: 0 0 auto;
}

.page-products .pr-rail .index-rail__link {
  display: block;
  padding: 6px 10px;
  font-size: 13px;
  line-height: 20px;
  white-space: nowrap;
  color: var(--ink-900);
  text-decoration: none;
  border: 2px solid var(--ink-600);
  border-radius: var(--radius);
  background: var(--paper-100);
}

.page-products .pr-rail .index-rail__link[data-current="true"] {
  color: var(--paper-000);
  background: var(--ink-900);
  border-color: var(--ink-900);
  box-shadow: inset 4px 0 0 var(--signal-orange);
}

/* ---------- 通用章节 ---------- */
.page-products .pr-section {
  padding-bottom: 44px;
  margin-bottom: 44px;
  border-bottom: 2px solid var(--ink-600);
}

.page-products .pr-section:last-of-type {
  border-bottom: 0;
}

.page-products .pr-section__head {
  margin-bottom: 22px;
}

.page-products .pr-section__head h2 {
  margin: 8px 0 12px;
  font-size: 24px;
  line-height: 34px;
  font-weight: 900;
  letter-spacing: -.01em;
}

.page-products .pr-section__lede {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 28px;
  color: var(--ink-700);
}

.page-products .pr-media-wide {
  margin: 0 0 26px;
}

.page-products .media-frame img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border: 2px solid var(--ink-900);
  border-radius: var(--radius);
}

/* ---------- 01 核对 ---------- */
.page-products .pr-check-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-products .pr-check {
  display: grid;
  gap: 14px;
}

.page-products .pr-check__item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px;
  cursor: pointer;
  background: var(--paper-000);
  border: 2px solid var(--ink-900);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard-sm);
}

.page-products .pr-check__input {
  -webkit-appearance: none;
  appearance: none;
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin: 2px 0 0;
  cursor: pointer;
  background: var(--paper-100);
  border: 2px solid var(--ink-900);
  border-radius: var(--radius);
}

.page-products .pr-check__input:checked {
  background: var(--green-ok);
}

.page-products .pr-check__input:checked::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 6px;
  height: 12px;
  border-right: 2px solid var(--paper-000);
  border-bottom: 2px solid var(--paper-000);
  transform: rotate(45deg);
}

.page-products .pr-check__input:focus-visible {
  outline: 2px solid var(--signal-orange);
  outline-offset: 2px;
}

.page-products .pr-check__body {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-products .pr-check__label {
  font-size: 17px;
  line-height: 26px;
  font-weight: 700;
}

.page-products .pr-check__hint {
  font-size: 15px;
  line-height: 26px;
  color: var(--ink-700);
}

.page-products .pr-check__note {
  margin: 0;
  padding: 14px 16px;
  font-size: 15px;
  line-height: 27px;
  color: var(--ink-900);
  background: var(--paper-000);
  border-left: 8px solid var(--signal-orange);
  border-top: 2px solid var(--ink-900);
  border-right: 2px solid var(--ink-900);
  border-bottom: 2px solid var(--ink-900);
  border-radius: var(--radius);
}

.page-products .pr-check__media {
  margin: 0;
}

/* ---------- 02 版本线 ---------- */
.page-products .pr-lines {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-products .pr-line {
  position: relative;
  padding: 24px 20px 20px;
  background: var(--paper-000);
  border: 2px solid var(--ink-900);
  border-top: 8px solid var(--steel-400);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard-sm);
}

.page-products .pr-line--v1 {
  border-top-color: var(--cyan-glow);
}

.page-products .pr-line--v2 {
  border-top-color: var(--amber-index);
}

.page-products .pr-line--v3 {
  border-top-color: var(--signal-orange);
  box-shadow: var(--shadow-orange);
}

.page-products .pr-line--v3::after {
  content: "当前版本";
  position: absolute;
  top: 0;
  right: 16px;
  transform: translateY(-50%);
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 18px;
  color: var(--paper-000);
  background: var(--signal-orange);
  border: 2px solid var(--ink-900);
  border-radius: var(--radius);
}

.page-products .pr-line__no {
  display: inline-block;
  margin: 0 0 14px;
  padding-bottom: 6px;
  font-size: 32px;
  line-height: 36px;
  font-weight: 700;
  letter-spacing: .04em;
  border-bottom: 2px solid var(--ink-900);
}

.page-products .pr-line__title {
  margin: 0 0 10px;
  font-size: 22px;
  line-height: 32px;
  font-weight: 700;
}

.page-products .pr-line__desc {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 27px;
  color: var(--ink-700);
}

.page-products .pr-line__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}

.page-products .pr-line__fit {
  margin: 0;
  padding-top: 12px;
  font-size: 14px;
  line-height: 24px;
  color: var(--ink-900);
  border-top: 2px solid var(--ink-600);
}

/* ---------- 03 V3 能力 ---------- */
.page-products .pr-cap-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

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

.page-products .pr-cap__item {
  position: relative;
  padding: 18px 18px 18px 22px;
  background: var(--paper-000);
  border: 2px solid var(--ink-900);
  border-left: 8px solid var(--cyan-glow);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard-sm);
}

.page-products .pr-cap__item:nth-child(2) {
  border-left-color: var(--amber-index);
}

.page-products .pr-cap__item:nth-child(3) {
  border-left-color: var(--signal-orange);
}

.page-products .pr-cap__item:nth-child(4) {
  border-left-color: var(--ink-900);
}

.page-products .pr-cap__no {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--steel-400);
}

.page-products .pr-cap__item h3 {
  margin: 0 0 8px;
  font-size: 19px;
  line-height: 28px;
  font-weight: 700;
}

.page-products .pr-cap__item p {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 27px;
  color: var(--ink-700);
}

.page-products .pr-cap__who {
  margin: 0 !important;
  padding-top: 10px;
  font-size: 14px !important;
  line-height: 24px !important;
  color: var(--ink-900) !important;
  border-top: 2px solid var(--ink-600);
}

.page-products .pr-cap__media {
  margin: 0;
}

/* ---------- 04 时间轴 ---------- */
.page-products .pr-legend-band {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.page-products .pr-legend-band__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 20px;
  color: var(--ink-900);
  background: var(--paper-000);
  border: 2px solid var(--ink-900);
  border-radius: var(--radius);
}

.page-products .pr-legend-band__dot {
  width: 12px;
  height: 12px;
  border: 2px solid var(--ink-900);
  border-radius: 1px;
}

.page-products .pr-dot--v1 {
  background: var(--cyan-glow);
}

.page-products .pr-dot--v2 {
  background: var(--amber-index);
}

.page-products .pr-dot--v3 {
  background: var(--signal-orange);
}

.page-products .pr-track {
  display: flex;
  gap: 14px;
  padding: 20px 16px;
  overflow-x: auto;
  background: var(--ink-800);
  border: 2px solid var(--ink-900);
  border-radius: var(--radius);
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-products .pr-track:focus-visible {
  outline: 2px solid var(--signal-orange);
  outline-offset: 2px;
}

.page-products .pr-node {
  flex: 0 0 auto;
  width: 152px;
  padding: 14px 12px;
  background: var(--paper-000);
  border: 2px solid var(--ink-900);
  border-top: 6px solid var(--steel-400);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard-sm);
  scroll-snap-align: start;
}

.page-products .pr-node--v1 {
  border-top-color: var(--cyan-glow);
}

.page-products .pr-node--v2 {
  border-top-color: var(--amber-index);
}

.page-products .pr-node--v3 {
  border-top-color: var(--signal-orange);
}

.page-products .pr-node__ver {
  display: block;
  margin-bottom: 8px;
  padding-bottom: 4px;
  font-size: 15px;
  line-height: 20px;
  font-weight: 700;
  border-bottom: 2px solid var(--ink-900);
}

.page-products .pr-node__batch {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--steel-400);
}

.page-products .pr-node__sum {
  display: block;
  margin-bottom: 10px;
  font-size: 14px;
  line-height: 22px;
  color: var(--ink-900);
}

.page-products .pr-node__scope {
  display: block;
  padding: 2px 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 18px;
  color: var(--ink-700);
  background: var(--paper-100);
  border: 1px solid var(--ink-600);
  border-radius: 1px;
}

.page-products .pr-track__hint {
  margin: 10px 0 0;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--ink-700);
}

/* ---------- 05 步骤路径 ---------- */
.page-products .pr-steps {
  display: grid;
  gap: 16px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}

.page-products .pr-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 18px;
  background: var(--paper-000);
  border: 2px solid var(--ink-900);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard-sm);
}

.page-products .pr-step__no {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  font-size: 15px;
  font-weight: 700;
  color: var(--paper-000);
  background: var(--ink-900);
  border-radius: var(--radius);
}

.page-products .pr-step:last-child .pr-step__no {
  background: var(--signal-orange);
}

.page-products .pr-step__body h3 {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 28px;
  font-weight: 700;
}

.page-products .pr-step__body > p {
  margin: 0 0 6px;
  font-size: 15px;
  line-height: 27px;
  color: var(--ink-700);
}

.page-products .pr-step__more summary {
  display: inline-block;
  padding: 6px 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 20px;
  color: var(--signal-orange);
  cursor: pointer;
  list-style: none;
}

.page-products .pr-step__more summary::-webkit-details-marker {
  display: none;
}

.page-products .pr-step__more summary::before {
  content: "+ ";
  font-weight: 700;
}

.page-products .pr-step__more[open] summary::before {
  content: "− ";
}

.page-products .pr-step__more p {
  margin: 6px 0 0;
  padding: 12px 14px;
  font-size: 14px;
  line-height: 26px;
  color: var(--ink-900);
  background: var(--paper-100);
  border-left: 6px solid var(--cyan-glow);
  border-radius: var(--radius);
}

.page-products .pr-step__more a {
  color: var(--ink-900);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-products .pr-path__media {
  margin-bottom: 0;
}

/* ---------- 下一步条 ---------- */
.page-products .pr-next {
  margin-top: 8px;
  padding: 22px 20px;
  background: var(--ink-900);
  border: 2px solid var(--ink-900);
  border-left: 10px solid var(--signal-orange);
  border-radius: var(--radius);
}

.page-products .pr-next__title {
  margin: 0 0 16px;
  font-size: 18px;
  line-height: 28px;
  font-weight: 700;
  color: var(--paper-000);
}

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

.page-products .pr-next__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 14px;
  font-size: 15px;
  line-height: 26px;
  color: var(--paper-000);
  text-decoration: none;
  background: var(--ink-800);
  border: 2px solid var(--ink-600);
  border-radius: var(--radius);
}

.page-products .pr-next__link .mono {
  font-size: 13px;
  color: var(--amber-index);
}

.page-products .pr-next__link:hover,
.page-products .pr-next__link:focus-visible {
  color: var(--ink-900);
  background: var(--signal-orange);
  border-color: var(--signal-orange);
}

.page-products .pr-next__link:hover .mono,
.page-products .pr-next__link:focus-visible .mono {
  color: var(--ink-900);
}

/* ---------- 媒体查询 ---------- */
@media (min-width: 768px) {
  .page-products .pr-hero {
    padding: 56px 0 48px;
  }

  .page-products .pr-hero h1 {
    font-size: 38px;
    line-height: 48px;
  }

  .page-products .pr-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .pr-section__head h2 {
    font-size: 28px;
    line-height: 38px;
  }

  .page-products .pr-check-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: start;
  }

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

  .page-products .pr-cap-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: start;
  }

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

@media (min-width: 1024px) {
  .page-products .pr-hero h1 {
    font-size: 44px;
    line-height: 56px;
  }

  .page-products .pr-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(260px, 1fr);
    align-items: end;
  }

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

  .page-products .pr-rail {
    position: sticky;
    top: 96px;
    margin-bottom: 0;
    padding: 18px 16px;
  }

  .page-products .pr-rail .index-rail__list {
    display: grid;
    gap: 6px;
    overflow: visible;
  }

  .page-products .pr-rail .index-rail__link {
    white-space: normal;
  }

  .page-products .pr-section__head h2 {
    font-size: 30px;
    line-height: 40px;
  }

  .page-products .pr-node {
    width: 164px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-products .pr-track {
    scroll-snap-type: none;
  }
}
</PAGE_CSS>>>