.page-products {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
}

.page-products .breadcrumb {
  padding: 20px 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--stone);
}
.page-products .breadcrumb a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--ochre-pale);
}
.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus-visible {
  border-bottom-color: var(--ochre);
  color: var(--ochre);
}
.page-products .breadcrumb__sep {
  margin: 0 7px;
  color: var(--ochre);
}

/* ---------- 首屏 ---------- */
.page-products .pf-hero {
  position: relative;
  overflow: hidden;
  padding: 18px 0 54px;
}
.page-products .pf-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 38%;
  height: 6px;
  background: var(--ochre);
  transform: rotate(-7deg);
  transform-origin: left center;
  pointer-events: none;
}
.page-products .pf-hero__shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  align-items: center;
}
.page-products .pf-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ochre);
}
.page-products .pf-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(32px, 7.2vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.02em;
}
.page-products .pf-lead {
  margin: 20px 0 0;
  max-width: 32em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
}
.page-products .pf-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}
.page-products .pf-hero__facts li {
  padding: 5px 10px;
  border: 2px solid var(--ink);
  background: var(--paper-white);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}
.page-products .pf-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.page-products .pf-hero__visual {
  position: relative;
  padding: 8px 0 14px;
}
.page-products .pf-hero__visual::before {
  content: "";
  position: absolute;
  inset: 6% -6% 0 12%;
  background: var(--indigo);
  transform: rotate(7deg);
  z-index: 0;
}
.page-products .pf-hero__figure {
  position: relative;
  z-index: 1;
  margin: 0;
  border: var(--hair);
  background: var(--paper-white);
  box-shadow: var(--shadow-hard);
}
.page-products .pf-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 主体两栏 ---------- */
.page-products .pf-body {
  padding: 14px 0 64px;
}
.page-products .pf-rail {
  display: none;
}
.page-products .pf-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--stone);
}
.page-products .pf-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}
.page-products .pf-rail__list a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 7px 6px;
  font-size: 13px;
  color: var(--stone);
  text-decoration: none;
  border-bottom: 1px dashed var(--ochre-pale);
  transition: background 0.16s var(--ease), color 0.16s var(--ease);
}
.page-products .pf-rail__list a span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ochre);
}
.page-products .pf-rail__list a:hover,
.page-products .pf-rail__list a:focus-visible {
  background: var(--ochre-pale);
  color: var(--indigo);
}

/* ---------- 章节 ---------- */
.page-products .pf-sec {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 2px solid var(--ink);
  scroll-margin-top: 96px;
}
.page-products .pf-sec__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0 16px;
  align-items: start;
  margin-bottom: 20px;
}
.page-products .pf-sec__no {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(30px, 6vw, 52px);
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: var(--ochre);
}
.page-products .pf-sec__titles h2 {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: clamp(23px, 4.2vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.01em;
}
.page-products .pf-sec__meta {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--stone);
}
.page-products .pf-sec__lead {
  margin: 0 0 22px;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.8;
}
.page-products .pf-sec__foot {
  margin: 22px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--stone);
}
.page-products .pf-sec__foot a {
  color: var(--indigo);
  text-decoration: none;
  border-bottom: 2px solid var(--ochre);
}
.page-products .pf-sec__foot a:hover,
.page-products .pf-sec__foot a:focus-visible {
  background: var(--ochre-pale);
  color: var(--ochre);
}

/* ---------- 01 入口面板 ---------- */
.page-products .pf-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}
.page-products .pf-panel {
  padding: 14px;
  border: var(--hair);
  background: var(--paper-white);
  box-shadow: var(--shadow-hard);
}
.page-products .pf-panel__main {
  display: grid;
  gap: 6px;
  justify-items: start;
  padding: 22px 16px 20px;
  background: var(--indigo);
  color: var(--paper-white);
}
.page-products .pf-panel__label {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 24px;
  line-height: 1.2;
}
.page-products .pf-panel__hint {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ochre-pale);
}
.page-products .pf-panel__aux {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}
.page-products .pf-panel__action {
  display: grid;
  gap: 3px;
  padding: 12px 10px;
  border: 2px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 15px;
  transition: background 0.16s var(--ease), color 0.16s var(--ease), transform 0.16s var(--ease);
}
.page-products .pf-panel__action span {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--stone);
}
.page-products .pf-panel__action:hover,
.page-products .pf-panel__action:focus-visible {
  background: var(--indigo);
  color: var(--paper-white);
  transform: translateY(-3px);
}
.page-products .pf-panel__action:hover span,
.page-products .pf-panel__action:focus-visible span {
  color: var(--ochre-pale);
}
.page-products .pf-entry__text p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.8;
}

/* ---------- 图片框 ---------- */
.page-products .pf-figure {
  margin: 24px 0 0;
  border: var(--hair);
  background: var(--paper-white);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.page-products .pf-figure--tight {
  margin-top: 0;
}
.page-products .pf-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-products .pf-figure__cap {
  padding: 9px 12px;
  border-top: 2px solid var(--ink);
  background: var(--paper-white);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--stone);
}

/* ---------- 02 三组目录 ---------- */
.page-products .pf-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}
.page-products .pf-filter {
  padding: 7px 14px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: var(--paper-white);
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  transition: background 0.16s var(--ease), color 0.16s var(--ease), transform 0.16s var(--ease);
}
.page-products .pf-filter:hover,
.page-products .pf-filter:focus-visible {
  background: var(--indigo);
  border-color: var(--indigo);
  color: var(--paper-white);
  transform: translateY(-2px);
}
.page-products .pf-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}
.page-products .pf-card {
  padding: 18px 16px 20px;
  scroll-margin-top: 96px;
  transition: box-shadow 0.16s var(--ease), transform 0.16s var(--ease), border-color 0.16s var(--ease);
}
.page-products .pf-card:hover {
  border-color: var(--ochre);
  box-shadow: 2px 2px 0 var(--ink);
  transform: translate(3px, 3px);
}
.page-products .pf-card__top {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--ink);
}
.page-products .pf-card__idx {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 26px;
  line-height: 1;
  color: var(--ochre);
}
.page-products .pf-card h3 {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.2;
}
.page-products .pf-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--stone);
}
.page-products .pf-card__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.page-products .pf-card__list li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--ochre-pale);
  font-size: 14px;
  line-height: 1.55;
}
.page-products .pf-card__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.page-products .pf-card__list a {
  color: var(--indigo);
  text-decoration: none;
  border-bottom: 2px solid var(--ochre-pale);
}
.page-products .pf-card__list a:hover,
.page-products .pf-card__list a:focus-visible {
  color: var(--ochre);
  border-bottom-color: var(--ochre);
}

/* ---------- 03 平板侧栏 ---------- */
.page-products .pf-tablet {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}
.page-products .pf-state {
  padding: 14px 16px;
  border: 2px solid var(--ink);
  background: var(--paper-white);
}
.page-products .pf-state + .pf-state {
  margin-top: 14px;
}
.page-products .pf-state--open {
  border-color: var(--flag-blue);
}
.page-products .pf-state p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
}
.page-products .pf-state__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--stone);
}
.page-products .pf-state__dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border: 2px solid var(--ink);
  background: var(--ochre-pale);
}
.page-products .pf-state--open .pf-state__dot {
  background: var(--flag-blue);
}
.page-products .pf-tablet__hint {
  margin: 16px 0 0;
  padding-left: 12px;
  border-left: 4px solid var(--flag-yellow);
  font-size: 14px;
  line-height: 1.75;
  color: var(--stone);
}

/* ---------- 04 状态与检索 ---------- */
.page-products .pf-legend {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
}
.page-products .pf-legend li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 2px;
  border-bottom: 1px dashed var(--ochre-pale);
}
.page-products .pf-legend__txt {
  font-size: 14px;
  line-height: 1.6;
  color: var(--stone);
}
.page-products .pf-nodes {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}
.page-products .pf-node {
  border: 2px solid var(--ink);
  background: var(--paper-white);
  padding: 0;
}
.page-products .pf-node[open] {
  border-color: var(--ochre);
}
.page-products .pf-node summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 14px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.3;
}
.page-products .pf-node summary::-webkit-details-marker {
  display: none;
}
.page-products .pf-node summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--ochre);
}
.page-products .pf-node[open] summary::after {
  content: "−";
}
.page-products .pf-node summary:focus-visible {
  outline: 2px solid var(--flag-yellow);
  outline-offset: 2px;
}
.page-products .pf-node__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  flex: none;
  background: var(--indigo);
  color: var(--paper-white);
  font-family: var(--font-mono);
  font-size: 12px;
}
.page-products .pf-node p {
  margin: 0;
  padding: 0 14px 15px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--stone);
  border-top: 1px dashed var(--ochre-pale);
  padding-top: 12px;
}

/* ---------- 05 收藏回访 ---------- */
.page-products .pf-path {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}
.page-products .pf-path li {
  position: relative;
  padding: 16px 14px 18px;
  border: 2px solid var(--ink);
  background: var(--paper-white);
}
.page-products .pf-path__no {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 8px;
  background: var(--indigo);
  color: var(--paper-white);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}
.page-products .pf-path h3 {
  margin: 0 0 6px;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.3;
}
.page-products .pf-path p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--stone);
}

/* ---------- 06 维护节奏 ---------- */
.page-products .pf-rhythm {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--ink);
}
.page-products .pf-rhythm li {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 14px 2px;
  border-bottom: 1px dashed var(--ochre-pale);
}
.page-products .pf-rhythm__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ochre);
}
.page-products .pf-rhythm__v {
  font-size: 15px;
  line-height: 1.75;
}

/* ---------- 结尾 ---------- */
.page-products .pf-next {
  margin-top: 48px;
  padding: 26px 22px 28px;
  border: var(--hair);
  background: var(--indigo);
  color: var(--paper-white);
  box-shadow: var(--shadow-hard);
}
.page-products .pf-next__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ochre-pale);
}
.page-products .pf-next h2 {
  margin: 10px 0 20px;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: clamp(21px, 3.6vw, 28px);
  line-height: 1.3;
}
.page-products .pf-next__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 22px;
}
.page-products .pf-next__link {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--paper-white);
  text-decoration: none;
  border-bottom: 2px solid var(--flag-yellow);
  padding-bottom: 2px;
}
.page-products .pf-next__link:hover,
.page-products .pf-next__link:focus-visible {
  color: var(--flag-yellow);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-products .pf-legend {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2px 24px;
  }
  .page-products .pf-nodes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }
}

@media (min-width: 760px) {
  .page-products .pf-entry {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 30px;
    align-items: start;
  }
  .page-products .pf-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
    gap: 16px;
  }
  .page-products .pf-card:nth-child(2) {
    margin-top: 26px;
  }
  .page-products .pf-card:nth-child(3) {
    margin-top: 52px;
  }
  .page-products .pf-path {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-products .pf-hero {
    padding: 30px 0 62px;
  }
  .page-products .pf-hero__shell {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    gap: 52px;
  }
  .page-products .pf-tablet {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr);
    gap: 30px;
    align-items: start;
  }
  .page-products .pf-lead {
    font-size: 17px;
  }
}

@media (min-width: 1000px) {
  .page-products .pf-body {
    display: grid;
    grid-template-columns: 224px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }
  .page-products .pf-rail {
    display: block;
    position: sticky;
    top: 88px;
    align-self: start;
    padding-left: 14px;
    border-left: 2px solid var(--ink);
  }
  .page-products .pf-sec:first-child {
    margin-top: 0;
    padding-top: 0;
    border-top: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pf-filter,
  .page-products .pf-card,
  .page-products .pf-panel__action,
  .page-products .pf-rail__list a {
    transition: none;
  }
  .page-products .pf-filter:hover,
  .page-products .pf-filter:focus-visible,
  .page-products .pf-panel__action:hover,
  .page-products .pf-panel__action:focus-visible,
  .page-products .pf-card:hover {
    transform: none;
  }
}
<<<END>>>