.page-products {
  --pd-measure: 38rem;
  background: var(--paper);
  color: var(--text);
}

/* ---------- 面包屑与首屏 ---------- */
.page-products .pd-hero {
  background: var(--ink);
  color: var(--paper);
  padding-bottom: clamp(2.5rem, 6vw, 4rem);
}

.page-products .pd-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  padding-block: 1.1rem 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
}

.page-products .pd-crumbs a {
  color: var(--shallow);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-products .pd-crumbs a:hover,
.page-products .pd-crumbs a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--signal);
}

.page-products .pd-crumbs__sep {
  color: rgba(159, 196, 216, 0.65);
}

.page-products .pd-crumbs [aria-current="page"] {
  color: var(--sand);
}

.page-products .pd-hero__inner {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  padding-top: clamp(1rem, 3vw, 2rem);
}

.page-products .pd-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--shallow);
}

.page-products .pd-eyebrow::before {
  content: "";
  width: 1.5rem;
  height: 2px;
  background: var(--signal);
}

.page-products .pd-hero h1 {
  margin: 0 0 1.15rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 5.4vw, 3.35rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-products .pd-lead {
  margin: 0 0 1.6rem;
  max-width: 30em;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: rgba(248, 245, 239, 0.84);
}

.page-products .pd-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-products .pd-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.78rem 1.3rem;
  border: 1px solid var(--signal);
  background: var(--signal);
  color: #FFFFFF;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-14);
  line-height: 1.2;
  text-decoration: none;
  transition: background 160ms var(--ease), border-color 160ms var(--ease), color 160ms var(--ease);
}

.page-products .pd-btn:hover {
  background: var(--signal-deep);
  border-color: var(--signal-deep);
  color: #FFFFFF;
}

.page-products .pd-btn--ghost {
  background: transparent;
  border-color: rgba(248, 245, 239, 0.42);
  color: var(--paper);
}

.page-products .pd-btn--ghost:hover {
  background: rgba(248, 245, 239, 0.12);
  border-color: var(--sand);
  color: var(--paper);
}

.page-products .pd-btn--ink {
  border-color: var(--ink);
  color: var(--ink);
}

.page-products .pd-btn--ink:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.page-products a:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.page-products .pd-hero__figure {
  margin: 0;
  padding: 0.5rem;
  border: 1px solid rgba(159, 196, 216, 0.45);
  background: rgba(255, 255, 255, 0.06);
}

.page-products .pd-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 章节骨架 ---------- */
.page-products .pd-section {
  padding-block: clamp(2.5rem, 6vw, 4.25rem);
}

.page-products .pd-section + .pd-section {
  border-top: 1px solid var(--line);
}

.page-products .pd-section--sand {
  background: var(--sand);
}

.page-products .pd-section--ink {
  background: var(--ink);
  color: var(--paper);
}

.page-products .pd-sec-head {
  display: flex;
  align-items: flex-start;
  gap: clamp(0.75rem, 2.5vw, 1.5rem);
  margin-bottom: 1.25rem;
}

.page-products .pd-sec-num {
  flex: none;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(2.25rem, 7vw, 3.75rem);
  line-height: 0.82;
  letter-spacing: -0.03em;
  color: var(--tide);
}

.page-products .pd-sec-kicker {
  margin: 0 0 0.4rem;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--tide);
}

.page-products .pd-sec-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 3.6vw, 1.95rem);
  line-height: 1.28;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-products .pd-sec-lead {
  margin: 0 0 1.75rem;
  max-width: var(--pd-measure);
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--text);
}

.page-products .pd-section--ink .pd-sec-num,
.page-products .pd-section--ink .pd-sec-kicker {
  color: var(--shallow);
}

.page-products .pd-section--ink .pd-sec-title {
  color: var(--paper);
}

.page-products .pd-section--ink .pd-sec-lead,
.page-products .pd-section--ink p {
  color: rgba(248, 245, 239, 0.84);
}

/* ---------- 01 四块状态卡 ---------- */
.page-products .pd-board {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .pd-tile {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.45rem 1.25rem 1.6rem;
  background: var(--paper);
  color: var(--text);
  text-decoration: none;
  transition: background 160ms var(--ease), box-shadow 160ms var(--ease);
}

.page-products .pd-tile:hover {
  background: var(--sand);
  box-shadow: inset 0 0 0 1px var(--tide);
}

.page-products .pd-tile:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: -2px;
}

.page-products .pd-tile__corner {
  align-self: flex-start;
  margin-bottom: 0.6rem;
  padding: 0.12rem 0.45rem;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--tide);
  background: rgba(46, 127, 168, 0.1);
  transition: transform 160ms var(--ease);
}

.page-products .pd-tile:hover .pd-tile__corner {
  transform: translateY(-2px);
}

.page-products .pd-tile__num {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(1.9rem, 6vw, 2.6rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-products .pd-tile__unit {
  margin-left: 0.15rem;
  font-size: var(--fs-14);
  color: var(--tide);
}

.page-products .pd-tile__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-16);
  color: var(--ink);
}

.page-products .pd-tile__note {
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--text);
}

.page-products .pd-figures {
  list-style: none;
  margin: 1.9rem 0 0;
  padding: 1.15rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2.25rem;
  border-top: 1px solid var(--line);
}

.page-products .pd-figures li {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
}

.page-products .pd-figures__num {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: var(--fs-28);
  line-height: 1;
  color: var(--ink);
}

.page-products .pd-figures__plus {
  font-size: var(--fs-20);
  color: var(--signal);
}

.page-products .pd-figures__label {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--tide);
}

/* ---------- 02 四个板块 ---------- */
.page-products .pd-banner {
  margin: 0 0 clamp(1.5rem, 4vw, 2.25rem);
  overflow: hidden;
  border: 1px solid rgba(201, 214, 222, 0.9);
}

.page-products .pd-banner img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 12rem;
  object-fit: cover;
}

.page-products .pd-blocks {
  display: grid;
  gap: 0;
}

.page-products .pd-block {
  padding-block: clamp(1.35rem, 3.5vw, 1.9rem);
  border-top: 1px solid var(--line);
  scroll-margin-top: 6rem;
}

.page-products .pd-block:last-child {
  border-bottom: 1px solid var(--line);
}

.page-products .pd-block__head {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  margin-bottom: 0.55rem;
}

.page-products .pd-block__idx {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--tide);
}

.page-products .pd-block__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.05rem, 2.8vw, 1.3rem);
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-products .pd-block__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--signal);
  font-weight: 700;
}

.page-products .pd-block__when {
  margin: 0;
  max-width: var(--pd-measure);
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--text);
}

.page-products .pd-fold {
  margin-top: 0.9rem;
  max-width: var(--pd-measure);
  border-top: 1px solid var(--line);
}

.page-products .pd-fold summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-14);
  color: var(--ink);
  transition: color 160ms var(--ease);
}

.page-products .pd-fold summary::-webkit-details-marker {
  display: none;
}

.page-products .pd-fold summary:hover {
  color: var(--tide);
}

.page-products .pd-fold summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: var(--fs-20);
  line-height: 1;
  color: var(--tide);
  transition: transform 220ms var(--ease);
}

.page-products .pd-fold[open] summary::after {
  transform: rotate(45deg);
}

.page-products .pd-fold__body {
  padding: 0.95rem 1.1rem 1.15rem;
  background: rgba(159, 196, 216, 0.18);
}

.page-products .pd-steps {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.55rem;
  font-size: var(--fs-14);
  line-height: 1.78;
  color: var(--text);
}

.page-products .pd-steps li::marker {
  font-family: var(--font-mono);
  color: var(--tide);
}

/* ---------- 03 读者画像 ---------- */
.page-products .pd-who {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
}

.page-products .pd-who__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--sand);
  padding: 0.5rem;
}

.page-products .pd-who__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-products .pd-personas {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .pd-personas li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  padding-block: 0.95rem;
  border-top: 1px solid var(--line);
}

.page-products .pd-personas li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-products .pd-personas__idx {
  padding-top: 0.3rem;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--tide);
}

.page-products .pd-personas h3 {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-16);
  color: var(--ink);
}

.page-products .pd-personas p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.78;
  color: var(--text);
}

.page-products .pd-who__note {
  margin: 1.25rem 0 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
  font-size: var(--fs-14);
  line-height: 1.78;
  color: var(--tide);
}

/* ---------- 04 起步三步 ---------- */
.page-products .pd-path {
  list-style: none;
  margin: 0 0 clamp(1.5rem, 4vw, 2.5rem);
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .pd-path__item {
  padding: 1.4rem 1.25rem 1.6rem;
  background: var(--paper);
}

.page-products .pd-path__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  margin-bottom: 0.9rem;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: var(--fs-20);
  line-height: 1;
  color: var(--paper);
  background: var(--ink);
}

.page-products .pd-path__title {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-16);
  color: var(--ink);
}

.page-products .pd-path__text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--text);
}

.page-products .pd-pathfig {
  margin: 0;
  border: 1px solid var(--line);
}

.page-products .pd-pathfig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 22 / 13;
  object-fit: cover;
}

/* ---------- 05 版本节奏 ---------- */
.page-products .pd-version {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-products .pd-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.page-products .pd-facts li {
  display: grid;
  gap: 0.35rem;
  padding-top: 0.85rem;
  border-top: 1px solid rgba(159, 196, 216, 0.3);
}

.page-products .pd-facts__k {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--shallow);
}

.page-products .pd-facts__v {
  font-size: var(--fs-14);
  line-height: 1.8;
  color: rgba(248, 245, 239, 0.88);
}

.page-products .pd-version__figure {
  margin: 0;
  padding: 0.5rem;
  border: 1px solid rgba(159, 196, 216, 0.42);
  background: rgba(255, 255, 255, 0.05);
  align-self: start;
}

.page-products .pd-version__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

/* ---------- 06 校对与补正 ---------- */
.page-products .pd-proof {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.page-products .pd-proof__col {
  padding-top: 1.1rem;
  border-top: 2px solid var(--tide);
}

.page-products .pd-proof__col h3 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-20);
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-products .pd-proof__col p {
  margin: 0 0 0.9rem;
  max-width: var(--pd-measure);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--text);
}

/* ---------- 结尾通道 ---------- */
.page-products .pd-cta {
  padding-block: clamp(1.9rem, 5vw, 2.75rem);
  background: var(--sand);
  border-top: 1px solid var(--line);
}

.page-products .pd-cta__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.1rem;
}

.page-products .pd-cta__text {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-16);
  line-height: 1.6;
  color: var(--ink);
}

.page-products .pd-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-products .pd-board {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .pd-facts li {
    grid-template-columns: 6.5rem minmax(0, 1fr);
    gap: 0.9rem;
    align-items: baseline;
  }
}

@media (min-width: 800px) {
  .page-products .pd-path {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-products .pd-proof {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-products .pd-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: center;
  }

  .page-products .pd-who {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
    align-items: start;
  }

  .page-products .pd-who__figure {
    grid-column: 1;
    grid-row: 1;
    position: sticky;
    top: 7rem;
  }

  .page-products .pd-who__text {
    grid-column: 2;
    grid-row: 1;
  }

  .page-products .pd-version {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-products .pd-board {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .pd-banner img {
    max-height: 14rem;
  }
}
<<<PAGE_CSS_END>>>