.page-products {
  --pp-gap: clamp(1rem, 2.2vw, 1.5rem);
  --pp-pad: clamp(1.25rem, 2.6vw, 2rem);
  background: var(--ink);
  color: var(--paper);
  padding-bottom: clamp(2.5rem, 7vw, 5rem);
  overflow-x: hidden;
}

.page-products .eyebrow {
  margin: 0 0 0.7rem;
}

.page-products .breadcrumb {
  padding-block: clamp(1rem, 3vw, 1.6rem) 0;
}

.page-products .section-head {
  margin-bottom: clamp(1.5rem, 3.5vw, 2.5rem);
}

.page-products .section-head h2 {
  margin: 0 0 0.85rem;
  max-width: 24ch;
}

.page-products .section-head p {
  margin: 0;
}

.page-products .pp-section__lede {
  max-width: 62ch;
  color: var(--sage);
  line-height: 1.8;
}

.page-products .media {
  margin: 0;
}

.page-products .media__frame {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--deep);
}

.page-products .media__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-products .media__caption {
  margin-top: 0.65rem;
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--sage);
}

.page-products .num {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--amber);
  letter-spacing: -0.02em;
}

/* ---------- 首屏 ---------- */

.page-products .pp-hero {
  padding-block: clamp(1.5rem, 4vw, 2.5rem) clamp(2.25rem, 6vw, 4rem);
  background:
    radial-gradient(110% 85% at 88% 0%, var(--cyan-12), transparent 62%),
    linear-gradient(180deg, var(--deep), var(--ink) 82%);
}

.page-products .pp-hero__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-products .pp-hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 5.2vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.page-products .pp-hero__lede {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(0.98rem, 1.5vw, 1.08rem);
  line-height: 1.85;
  color: var(--paper);
  opacity: 0.92;
}

.page-products .pp-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(1.25rem, 3vw, 1.75rem);
}

.page-products .pp-stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1.1rem, 3vw, 2.25rem);
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  padding-top: clamp(1rem, 2.5vw, 1.5rem);
  border-top: 1px solid var(--line);
}

.page-products .pp-stats div {
  display: flex;
  flex-direction: column-reverse;
  gap: 0.25rem;
}

.page-products .pp-stats dt {
  font-size: 0.76rem;
  letter-spacing: 0.02em;
  color: var(--sage);
}

.page-products .pp-stats dd {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.35rem, 2.8vw, 1.9rem);
  line-height: 1.1;
  color: var(--paper);
}

/* ---------- 首屏右侧索引 ---------- */

.page-products .pp-index {
  display: grid;
  gap: 1.1rem;
  padding: var(--pp-pad);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(170deg, var(--moss), var(--ink) 92%);
}

.page-products .pp-index__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sage);
}

.page-products .pp-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.2rem;
}

.page-products .pp-index__list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.7rem;
  padding: 0.62rem 0.7rem;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  color: var(--paper);
  text-decoration: none;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-products .pp-index__list a:hover {
  background: var(--cyan-06);
  border-color: var(--cyan-40);
  transform: translateX(3px);
}

.page-products .pp-index__list a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  background: var(--cyan-06);
}

.page-products .pp-index__name {
  font-weight: 600;
  font-size: 0.95rem;
}

.page-products .pp-index__hint {
  font-size: 0.72rem;
  color: var(--sage);
  white-space: nowrap;
}

.page-products .pp-index__media {
  margin-top: 0.3rem;
}

/* ---------- 通用章节 ---------- */

.page-products .pp-section {
  padding-block: clamp(2.25rem, 5.5vw, 4rem);
}

.page-products .pp-map {
  margin-bottom: clamp(1.5rem, 3.5vw, 2.5rem);
}

/* ---------- 五栏目错层卡片 ---------- */

.page-products .pp-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pp-gap);
}

.page-products .pp-col {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: var(--pp-pad);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(165deg, var(--moss), var(--ink) 95%);
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-products .pp-col:nth-child(even) {
  background: linear-gradient(165deg, var(--teal), var(--ink) 95%);
}

.page-products .pp-col:hover,
.page-products .pp-col:focus-within {
  transform: translateY(-4px);
  border-color: var(--cyan-40);
  box-shadow: 0 18px 40px -28px rgba(88, 242, 208, 0.5);
}

.page-products .pp-col__head {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
}

.page-products .pp-col__num {
  font-size: 1.35rem;
  line-height: 1;
}

.page-products .pp-col h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.page-products .pp-col__lede {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--paper);
  opacity: 0.88;
}

.page-products .pp-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .pp-tags .pill {
  font-size: 0.74rem;
  padding: 0.25rem 0.7rem;
}

.page-products .pp-col:hover .pp-tags .pill {
  border-color: var(--cyan-40);
}

.page-products .pp-fold {
  margin-top: auto;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
}

.page-products .pp-fold summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--cyan);
}

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

.page-products .pp-fold summary::after {
  content: "+";
  font-size: 1.1rem;
  line-height: 1;
  color: var(--amber);
}

.page-products .pp-fold[open] summary::after {
  content: "–";
}

.page-products .pp-fold summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.page-products .pp-fold__body p {
  margin: 0.8rem 0 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--sage);
}

.page-products .pp-col__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
}

.page-products .pp-col__foot .btn {
  font-size: 0.82rem;
  padding: 0.5rem 1rem;
}

.page-products .pp-col__foot .copy-btn {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  padding: 0.45rem 0.85rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: transparent;
  color: var(--sage);
  cursor: pointer;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-products .pp-col__foot .copy-btn:hover {
  color: var(--cyan);
  border-color: var(--cyan-40);
}

.page-products .pp-col__foot .copy-btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-products .pp-copy-status {
  font-size: 0.74rem;
  color: var(--cyan);
  min-height: 1em;
}

/* ---------- 三步路径 ---------- */

.page-products .pp-path {
  background: linear-gradient(180deg, var(--ink), var(--deep) 40%, var(--ink));
}

.page-products .pp-connector {
  display: block;
  width: 100%;
  height: 10px;
  margin-bottom: 1rem;
  color: var(--line);
  stroke: currentColor;
  stroke-width: 1;
  stroke-dasharray: 8 10;
}

.page-products .pp-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--pp-gap);
  counter-reset: pp-step;
}

.page-products .pp-step {
  position: relative;
  padding: var(--pp-pad);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, var(--teal), var(--ink) 96%);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-products .pp-step:hover {
  border-color: var(--cyan-40);
  transform: translateY(-4px);
}

.page-products .pp-step.is-current {
  border-color: var(--cyan-40);
  box-shadow: inset 0 0 0 1px var(--cyan-12);
}

.page-products .pp-step.is-current::before {
  content: "当前";
  position: absolute;
  top: 0;
  right: var(--pp-pad);
  transform: translateY(-50%);
  padding: 0.15rem 0.65rem;
  border-radius: var(--r-pill);
  background: var(--cyan);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
}

.page-products .pp-step__num {
  display: inline-block;
  font-size: 0.95rem;
  margin-bottom: 0.6rem;
}

.page-products .pp-step h3 {
  margin: 0 0 0.6rem;
  font-size: 1.1rem;
  font-weight: 800;
}

.page-products .pp-step p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--sage);
}

/* ---------- 设备衔接 ---------- */

.page-products .pp-bridge__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  align-items: center;
}

.page-products .pp-bridge h2,
.page-products .pp-ver h2,
.page-products .pp-why h2 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  max-width: 22ch;
}

.page-products .pp-bridge__copy p {
  margin: 0 0 1.1rem;
  max-width: 56ch;
  line-height: 1.85;
  color: var(--paper);
  opacity: 0.9;
}

.page-products .pp-bridge__list {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-products .pp-bridge__list li {
  position: relative;
  padding-left: 1.4rem;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--sage);
}

.page-products .pp-bridge__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 0.7rem;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 维护节奏 ---------- */

.page-products .pp-ver {
  background: linear-gradient(180deg, var(--deep), var(--ink) 70%);
}

.page-products .pp-ver__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  align-items: start;
}

.page-products .pp-ver__copy > p {
  margin: 0 0 1.5rem;
  max-width: 58ch;
  line-height: 1.85;
  color: var(--sage);
}

.page-products .pp-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-products .pp-timeline li {
  display: grid;
  grid-template-columns: minmax(5.5rem, auto) minmax(0, 1fr);
  gap: 0.9rem;
  align-items: baseline;
  padding-block: 0.75rem;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--paper);
}

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

.page-products .pp-timeline__label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--amber);
}

.page-products .pp-timeline a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-40);
}

.page-products .pp-timeline a:hover {
  border-bottom-color: var(--cyan);
}

.page-products .pp-timeline a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 收束 ---------- */

.page-products .pp-why {
  padding-bottom: clamp(2rem, 5vw, 3.5rem);
}

.page-products .pp-why__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  align-items: start;
}

.page-products .pp-why__list {
  list-style: none;
  margin: 0 0 1.75rem;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.page-products .pp-why__list li {
  padding-left: 1.1rem;
  border-left: 1px solid var(--amber-45);
}

.page-products .pp-why__list h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.page-products .pp-why__list p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--sage);
}

.page-products .pp-why__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem;
}

.page-products .pp-save {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.62rem 1.15rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: transparent;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 0.86rem;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-products .pp-save:hover {
  border-color: var(--cyan-40);
  color: var(--cyan);
}

.page-products .pp-save:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-products .pp-save__dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--line);
  transition: background 0.2s var(--ease);
}

.page-products .pp-save[aria-pressed="true"] {
  border-color: var(--cyan-40);
  color: var(--cyan);
}

.page-products .pp-save[aria-pressed="true"] .pp-save__dot {
  background: var(--cyan);
}

/* ---------- 桌面栅格 ---------- */

@media (min-width: 900px) {
  .page-products .pp-cols {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-products .pp-col:nth-child(1) {
    grid-column: 1 / span 8;
  }

  .page-products .pp-col:nth-child(2) {
    grid-column: 9 / span 4;
  }

  .page-products .pp-col:nth-child(3) {
    grid-column: 1 / span 5;
  }

  .page-products .pp-col:nth-child(4) {
    grid-column: 6 / span 7;
  }

  .page-products .pp-col:nth-child(5) {
    grid-column: 2 / span 9;
  }
}

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

  .page-products .pp-bridge__grid,
  .page-products .pp-ver__grid,
  .page-products .pp-why__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }

  .page-products .pp-bridge__media {
    order: -1;
  }
}

@media (min-width: 820px) {
  .page-products .pp-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .page-products .pp-index__list a {
    grid-template-columns: auto minmax(0, 1fr);
    row-gap: 0.15rem;
  }

  .page-products .pp-index__hint {
    grid-column: 2;
    white-space: normal;
  }

  .page-products .pp-timeline li {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-col,
  .page-products .pp-step,
  .page-products .pp-index__list a {
    transition: none;
    transform: none;
  }

  .page-products .pp-col:hover,
  .page-products .pp-step:hover,
  .page-products .pp-index__list a:hover {
    transform: none;
  }
}
<<<END>>>