.page-products {
  --pp-rule: rgba(31, 74, 107, 0.72);
  --pp-rule-soft: rgba(31, 74, 107, 0.42);
  --pp-amber-rule: rgba(226, 163, 74, 0.5);
  --pp-ink-rule: rgba(8, 24, 42, 0.18);
  --pp-ink-soft: rgba(8, 24, 42, 0.66);
  --pp-lift: rgba(18, 53, 79, 0.55);
  padding-top: clamp(20px, 4vw, 36px);
  padding-bottom: clamp(40px, 6vw, 72px);
  overflow-x: hidden;
}

.page-products .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

/* ── 首屏 ───────────────────────────────── */

.page-products .pp-hero {
  padding-bottom: clamp(28px, 4vw, 48px);
}

.page-products .pp-hero__kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-size: var(--step-2);
  letter-spacing: 0.1em;
  color: var(--steel);
}

.page-products .pp-hero__kicker::before {
  content: "";
  flex: 0 0 auto;
  width: 26px;
  height: 1px;
  background: var(--amber);
}

.page-products .pp-hero__title {
  margin: 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.9rem, 6.2vw, 3.9rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--silver);
}

.page-products .pp-hero__lede {
  margin: clamp(16px, 3vw, 24px) 0 0;
  max-width: 34em;
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  line-height: 1.85;
  color: var(--steel);
}

.page-products .pp-hero__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(26px, 4vw, 38px) 0 0;
  background: var(--pp-rule-soft);
  border: 1px solid var(--pp-rule-soft);
}

.page-products .pp-hero__cell {
  padding: 13px 15px;
  background: var(--void);
}

.page-products .pp-hero__cell dt {
  margin: 0;
  font-size: var(--step-1);
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-products .pp-hero__cell dd {
  margin: 6px 0 0;
  font-size: var(--step-4);
  color: var(--silver);
}

.page-products .pp-key {
  color: var(--amber);
}

.page-products .pp-scale {
  height: 24px;
  margin-top: clamp(26px, 4vw, 42px);
  border-bottom: 1px solid var(--pp-rule);
  background-image: repeating-linear-gradient(
    to right,
    var(--grid) 0,
    var(--grid) 1px,
    transparent 1px,
    transparent 12px
  );
  background-size: 100% 7px;
  background-position: 0 100%;
  background-repeat: no-repeat;
}

.page-products .pp-scale::after {
  content: "";
  display: block;
  height: 100%;
  opacity: 0.8;
  background-image: repeating-linear-gradient(
    to right,
    var(--amber) 0,
    var(--amber) 1px,
    transparent 1px,
    transparent 60px
  );
  background-size: 100% 14px;
  background-position: 0 100%;
  background-repeat: no-repeat;
}

/* ── 章节骨架 ───────────────────────────── */

.page-products .pp-block {
  padding-block: clamp(42px, 6vw, 74px);
  border-top: 1px solid var(--pp-rule-soft);
}

.page-products .pp-block--paper {
  padding-block: clamp(36px, 5vw, 64px);
}

.page-products .pp-chapter {
  margin-bottom: clamp(22px, 3.4vw, 38px);
}

.page-products .pp-chapter__num {
  margin: 0 0 10px;
  font-size: var(--step-1);
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-products .pp-chapter__title {
  margin: 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 3.6vw, 2.35rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--silver);
}

.page-products .pp-chapter__lede {
  margin: 12px 0 0;
  max-width: 34em;
  font-size: var(--step-3);
  line-height: 1.85;
  color: var(--steel);
}

.page-products .pp-chapter--ink .pp-chapter__num {
  color: var(--ink);
  opacity: 0.5;
}

.page-products .pp-chapter--ink .pp-chapter__title {
  color: var(--ink);
}

.page-products .pp-chapter--ink .pp-chapter__lede {
  color: var(--pp-ink-soft);
}

/* ── 图版 ───────────────────────────────── */

.page-products .pp-fig {
  margin: 0 0 clamp(22px, 3.4vw, 34px);
}

.page-products .pp-fig__frame {
  position: relative;
  border: 1px solid var(--pp-rule);
  background: var(--hull);
  overflow: hidden;
}

.page-products .pp-fig__frame::before,
.page-products .pp-fig__frame::after {
  content: "";
  position: absolute;
  z-index: 2;
  width: 12px;
  height: 12px;
  border: 1px solid var(--amber);
}

.page-products .pp-fig__frame::before {
  top: 8px;
  left: 8px;
  border-right: 0;
  border-bottom: 0;
}

.page-products .pp-fig__frame::after {
  right: 8px;
  bottom: 8px;
  border-left: 0;
  border-top: 0;
}

.page-products .pp-fig__frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .pp-fig__cap {
  margin: 10px 0 0;
  font-size: var(--step-1);
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--steel);
}

/* ── 层级对照表 ─────────────────────────── */

.page-products .pp-tablewrap {
  overflow-x: auto;
  border: 1px solid var(--pp-rule);
  background: var(--hull);
}

.page-products .pp-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--step-2);
}

.page-products .pp-table__cap {
  caption-side: top;
  padding: 12px 16px;
  text-align: left;
  font-size: var(--step-1);
  letter-spacing: 0.06em;
  color: var(--steel);
  border-bottom: 1px solid var(--pp-rule-soft);
}

.page-products .pp-table thead th {
  padding: 12px 16px;
  text-align: left;
  font-weight: 500;
  font-size: var(--step-2);
  letter-spacing: 0.05em;
  white-space: nowrap;
  color: var(--silver);
  background: var(--deck);
  border-bottom: 1px solid var(--pp-rule);
}

.page-products .pp-table tbody th {
  padding: 14px 16px;
  text-align: left;
  font-weight: 500;
  white-space: nowrap;
  color: var(--silver);
  border-bottom: 1px solid var(--pp-rule-soft);
  border-left: 2px solid var(--amber);
}

.page-products .pp-table tbody td {
  padding: 14px 16px;
  vertical-align: top;
  line-height: 1.7;
  color: var(--steel);
  border-bottom: 1px solid var(--pp-rule-soft);
}

.page-products .pp-table tbody tr:last-child th,
.page-products .pp-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-products .pp-table tbody tr:hover th,
.page-products .pp-table tbody tr:hover td {
  background: var(--pp-lift);
}

.page-products .pp-table .mono {
  font-size: var(--step-2);
  font-variant-numeric: tabular-nums;
}

/* ── 三段交付 ───────────────────────────── */

.page-products .pp-flow {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--pp-rule-soft);
  border: 1px solid var(--pp-rule-soft);
}

.page-products .pp-flow__step {
  position: relative;
  padding: 22px 18px 24px;
  background: var(--void);
}

.page-products .pp-flow__step::after {
  content: "";
  position: absolute;
  top: 0;
  left: 18px;
  width: 18px;
  height: 2px;
  background: var(--amber);
}

.page-products .pp-flow__idx {
  display: block;
  margin-bottom: 12px;
  font-size: var(--step-1);
  letter-spacing: 0.16em;
  color: var(--steel);
}

.page-products .pp-flow__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--step-4);
  color: var(--silver);
}

.page-products .pp-flow__time {
  margin: 8px 0 0;
  font-size: var(--step-4);
  letter-spacing: 0.04em;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

.page-products .pp-flow__desc {
  margin: 10px 0 0;
  max-width: 34em;
  font-size: var(--step-2);
  line-height: 1.8;
  color: var(--steel);
}

.page-products .pp-note {
  margin-top: 22px;
  padding: 18px 20px;
  border-left: 2px solid var(--amber);
  background: var(--pp-lift);
}

.page-products .pp-note .pp-note__label {
  margin: 0 0 8px;
  font-size: var(--step-1);
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-products .pp-note p {
  margin: 0;
  max-width: 34em;
  font-size: var(--step-2);
  line-height: 1.85;
  color: var(--steel);
}

/* ── 左右分栏 ───────────────────────────── */

.page-products .pp-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  align-items: start;
}

.page-products .pp-split__fig {
  margin: 0;
}

.page-products .pp-split__body p {
  margin: 0 0 16px;
  max-width: 34em;
  font-size: var(--step-3);
  line-height: 1.85;
  color: var(--steel);
}

.page-products .pp-split__body p:last-child {
  margin-bottom: 0;
}

.page-products .pp-chain {
  list-style: none;
  counter-reset: ppchain;
  margin: 20px 0 0;
  padding: 0;
  border-top: 1px solid var(--pp-rule-soft);
}

.page-products .pp-chain li {
  counter-increment: ppchain;
  position: relative;
  padding: 14px 0 14px 34px;
  border-bottom: 1px solid var(--pp-rule-soft);
  font-size: var(--step-3);
  line-height: 1.8;
  color: var(--silver);
}

.page-products .pp-chain li::before {
  content: counter(ppchain, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 17px;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-products .pp-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
}

/* ── 纸白认证清单 ───────────────────────── */

.page-products .pp-paper {
  padding: clamp(20px, 4vw, 44px);
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--grid);
}

.page-products .pp-paper .pp-fig__frame {
  border-color: var(--pp-ink-rule);
  background: rgba(8, 24, 42, 0.05);
}

.page-products .pp-paper .pp-fig__cap {
  color: var(--pp-ink-soft);
}

.page-products .pp-certs {
  margin-top: clamp(22px, 3.4vw, 34px);
  border-top: 2px solid var(--amber);
}

.page-products .pp-certgroup {
  padding-bottom: 6px;
}

.page-products .pp-certgroup + .pp-certgroup {
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid var(--pp-amber-rule);
}

.page-products .pp-certgroup__title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--step-4);
  color: var(--ink);
}

.page-products .pp-certgroup__mark {
  flex: 0 0 auto;
  width: 16px;
  height: 2px;
  background: var(--amber);
}

.page-products .pp-certgroup__count {
  margin-left: auto;
  font-size: var(--step-1);
  letter-spacing: 0.1em;
  color: rgba(8, 24, 42, 0.55);
}

.page-products .pp-certlist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .pp-cert {
  display: grid;
  grid-template-columns: 1fr;
  gap: 5px;
  padding: 12px 0;
  border-top: 1px solid var(--pp-ink-rule);
}

.page-products .pp-cert:first-child {
  border-top: 0;
}

.page-products .pp-cert__id {
  display: inline-block;
  padding-left: 10px;
  border-left: 2px solid var(--amber);
  font-size: var(--step-2);
  letter-spacing: 0.06em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.page-products .pp-cert__name {
  font-size: var(--step-2);
  line-height: 1.7;
  color: rgba(8, 24, 42, 0.78);
}

.page-products .pp-cert__period {
  justify-self: start;
  padding: 2px 8px;
  background: rgba(226, 163, 74, 0.18);
  font-size: var(--step-2);
  letter-spacing: 0.04em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* ── 三步核对 ───────────────────────────── */

.page-products .pp-steps {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--pp-rule-soft);
  border: 1px solid var(--pp-rule-soft);
}

.page-products .pp-steps__item {
  padding: 22px 20px;
  background: var(--void);
}

.page-products .pp-steps__idx {
  display: block;
  margin-bottom: 10px;
  font-size: var(--step-1);
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-products .pp-steps__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--step-4);
  color: var(--silver);
}

.page-products .pp-steps__item p {
  margin: 0;
  max-width: 34em;
  font-size: var(--step-2);
  line-height: 1.8;
  color: var(--steel);
}

.page-products .pp-footlinks {
  margin: clamp(26px, 4vw, 38px) 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--pp-rule-soft);
  font-size: var(--step-2);
  line-height: 1.9;
  color: var(--steel);
}

.page-products .pp-footlinks a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid var(--pp-amber-rule);
}

.page-products .pp-footlinks a:hover,
.page-products .pp-footlinks a:focus-visible {
  color: var(--amber-soft);
  border-bottom-color: var(--amber-soft);
}

/* ── 响应式 ─────────────────────────────── */

@media (min-width: 640px) {
  .page-products .pp-hero__meta {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .pp-cert {
    grid-template-columns: minmax(158px, 200px) minmax(0, 1fr) auto;
    gap: 16px;
    align-items: baseline;
  }

  .page-products .pp-cert__period {
    justify-self: end;
  }
}

@media (min-width: 780px) {
  .page-products .pp-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-products .pp-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: clamp(24px, 3.5vw, 44px);
  }

  .page-products .pp-split--reverse .pp-split__fig {
    order: -1;
  }
}

@media (max-width: 720px) {
  .page-products .pp-table {
    min-width: 640px;
  }

  .page-products .pp-tablewrap {
    -webkit-overflow-scrolling: touch;
  }

  .page-products .pp-hero__title {
    max-width: 100%;
  }

  .page-products .pp-certgroup__count {
    font-size: 11px;
  }
}
<<<END>>>