.page-products {
  --pp-radius: 18px;
  --pp-radius-sm: 10px;
  --pp-line: rgba(184, 137, 47, 0.34);
  --pp-shadow: 0 20px 46px -32px rgba(24, 20, 20, 0.6);
  --pp-tint: rgba(184, 137, 47, 0.08);
  background: var(--paper);
  color: var(--ink);
}

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

.page-products .section {
  padding-block: clamp(42px, 6vw, 84px);
}

.pp-crumbs {
  padding-block: 18px 0;
}

.pp-inline-link {
  color: var(--cinnabar);
  text-decoration: underline;
  text-decoration-color: var(--gold);
  text-underline-offset: 3px;
}

.pp-inline-link:hover {
  color: var(--cinnabar-deep);
  text-decoration-color: var(--cinnabar-deep);
}

.pp-inline-link:focus-visible {
  outline: 2px solid var(--celadon);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---------- hero ---------- */
.pp-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(22px, 4vw, 46px) clamp(34px, 5vw, 64px);
}

.pp-hero::before {
  content: "";
  position: absolute;
  inset-block-start: -26vw;
  inset-inline-end: -22vw;
  width: 62vw;
  height: 62vw;
  max-width: 660px;
  max-height: 660px;
  background: radial-gradient(circle at 60% 40%, rgba(110, 27, 27, 0.16), rgba(110, 27, 27, 0) 68%);
  pointer-events: none;
}

.pp-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(24px, 4vw, 52px);
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
}

.pp-hero__kicker {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--warm);
  margin: 0 0 14px;
}

.pp-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 7.6vw, 78px);
  line-height: 1.05;
  letter-spacing: -0.012em;
  color: var(--cinnabar);
  margin: 0 0 20px;
}

.pp-hero__lede {
  font-size: clamp(16px, 1.55vw, 18px);
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 48ch;
  margin: 0 0 24px;
}

.pp-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.pp-hero__fig {
  margin-top: clamp(24px, 4vw, 40px);
  border-radius: var(--pp-radius);
  overflow: hidden;
}

.pp-hero__panel {
  background: var(--cinnabar-deep);
  color: var(--paper);
  border: 1px solid rgba(228, 207, 160, 0.3);
  border-radius: var(--pp-radius);
  padding: clamp(20px, 3vw, 28px);
  box-shadow: var(--pp-shadow);
}

.pp-panel__title {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold-pale);
  margin: 0 0 16px;
}

.pp-panel__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.pp-hero__panel .data-tag {
  color: var(--paper);
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  line-height: 1.5;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(228, 207, 160, 0.16);
}

.pp-hero__panel .data-tag:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.pp-panel__note {
  margin: 18px 0 0;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: rgba(244, 235, 221, 0.62);
}

/* ---------- 能力 ---------- */
.pp-cap__grid {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(22px, 3vw, 34px);
}

.pp-stat {
  background: var(--paper-lit);
  border: 1px solid var(--ash);
  border-top: 3px solid var(--gold);
  border-radius: var(--pp-radius);
  padding: clamp(18px, 2.4vw, 26px);
}

.pp-stat--alt {
  border-top-color: var(--cinnabar);
  background: var(--paper);
}

.pp-stat__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(40px, 5.6vw, 58px);
  line-height: 1;
  color: var(--cinnabar);
  margin: 0 0 6px;
}

.pp-stat__num--ver {
  font-size: clamp(32px, 4.4vw, 46px);
  letter-spacing: 0.02em;
}

.pp-stat__title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin: 0 0 8px;
  color: var(--ink);
}

.pp-stat__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 下载 ---------- */
.pp-dl__layout {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(22px, 3vw, 34px);
}

.pp-dl__grid {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.pp-doc {
  background: var(--paper-lit);
  border: 1px solid var(--ash);
  border-radius: var(--pp-radius);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform 200ms var(--ease), border-color 200ms var(--ease), box-shadow 200ms var(--ease);
}

.pp-doc:hover,
.pp-doc:focus-within {
  transform: translateY(-3px);
  border-color: var(--gold);
  box-shadow: var(--pp-shadow);
}

.pp-doc__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.pp-doc__icon {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: var(--gold);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke 200ms var(--ease);
}

.pp-doc:hover .pp-doc__icon {
  stroke: var(--cinnabar);
}

.pp-doc__title {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.3;
  margin: 2px 0 0;
  color: var(--cinnabar);
}

.pp-doc__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  flex: 1 1 auto;
}

.pp-doc__meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 4px 0 0;
  padding: 0;
}

.pp-doc__note {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--warm);
  padding-top: 8px;
  border-top: 1px dashed var(--ash);
  transition: color 200ms var(--ease);
}

.pp-doc:hover .pp-doc__note {
  color: var(--celadon);
}

.pp-dl__aside {
  background: var(--paper-lit);
  border: 1px solid var(--ash);
  border-radius: var(--pp-radius);
  padding: 18px;
}

.pp-dl__cover {
  margin: 0 0 16px;
  border-radius: var(--pp-radius-sm);
  overflow: hidden;
}

.pp-dl__aside-text {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.pp-dl__aside-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.pp-dl__aside-list li {
  padding-left: 10px;
  border-left: 2px solid var(--gold-pale);
}

.pp-dl__aside-list .mono {
  color: var(--cinnabar);
  margin-right: 8px;
  font-size: 11px;
  letter-spacing: 0.06em;
}

/* ---------- 案例 ---------- */
.pp-cases__fig {
  margin: 0 0 20px;
  border-radius: var(--pp-radius);
  overflow: hidden;
}

.pp-caselab {
  position: relative;
}

.pp-filter__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
  clip-path: inset(50%);
}

.pp-filter__label + .pp-filter__input,
.pp-filter__label {
  font-family: var(--font-mono);
}

.pp-filter__label {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  letter-spacing: 0.05em;
  padding: 8px 13px;
  margin: 0 8px 8px 0;
  border: 1px solid var(--ash);
  border-radius: 999px;
  background: var(--paper-lit);
  color: var(--ink-soft);
  cursor: pointer;
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.pp-filter__label:hover {
  border-color: var(--gold);
  color: var(--cinnabar);
}

.pp-filter__input:checked + .pp-filter__label {
  background: var(--cinnabar);
  border-color: var(--cinnabar);
  color: var(--paper-lit);
}

.pp-filter__input:focus-visible + .pp-filter__label {
  outline: 2px solid var(--celadon);
  outline-offset: 2px;
}

.pp-cases__grid {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.pp-case {
  position: relative;
  background: var(--paper-lit);
  border: 1px solid var(--ash);
  border-left: 3px solid var(--gold-pale);
  border-radius: 14px;
  padding: 16px 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color 180ms var(--ease), box-shadow 180ms var(--ease);
}

.pp-case:hover {
  border-left-color: var(--cinnabar);
  box-shadow: var(--pp-shadow);
}

.pp-case__no {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--warm);
}

.pp-case__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.pp-case__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--ink-soft);
  flex: 1 1 auto;
}

.pp-case__result {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--celadon);
}

.pp-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--celadon);
  box-shadow: 0 0 0 3px rgba(79, 125, 110, 0.16);
}

.pp-case__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 2px 0 0;
  padding: 0;
}

.pp-cases__foot {
  margin: 18px 0 0;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--warm);
  padding-top: 12px;
  border-top: 1px solid var(--pp-line);
}

/* 纯 CSS 标签筛选 */
.page-products #cf-version:checked ~ .pp-cases__grid > .pp-case:not(.pp-case--version),
.page-products #cf-cache:checked ~ .pp-cases__grid > .pp-case:not(.pp-case--cache),
.page-products #cf-security:checked ~ .pp-cases__grid > .pp-case:not(.pp-case--security),
.page-products #cf-register:checked ~ .pp-cases__grid > .pp-case:not(.pp-case--register),
.page-products #cf-contact:checked ~ .pp-cases__grid > .pp-case:not(.pp-case--contact),
.page-products #cf-device:checked ~ .pp-cases__grid > .pp-case:not(.pp-case--device),
.page-products #cf-network:checked ~ .pp-cases__grid > .pp-case:not(.pp-case--network),
.page-products #cf-docver:checked ~ .pp-cases__grid > .pp-case:not(.pp-case--docver),
.page-products #cf-errorcode:checked ~ .pp-cases__grid > .pp-case:not(.pp-case--errorcode),
.page-products #cf-verify:checked ~ .pp-cases__grid > .pp-case:not(.pp-case--verify) {
  display: none;
}

/* ---------- 场景与步骤 ---------- */
.pp-flow__cols {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(22px, 3vw, 34px);
}

.pp-flow__subtitle {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--cinnabar);
  margin: 0 0 16px;
}

.pp-scenes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.pp-scene {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--ash);
}

.pp-scene:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.pp-scene__no {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold);
  padding-top: 3px;
}

.pp-scene strong {
  display: block;
  font-size: 15px;
  color: var(--ink);
  margin-bottom: 3px;
}

.pp-scene p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.pp-step {
  border-top: 1px solid var(--ash);
  padding: 14px 0;
}

.pp-step:last-of-type {
  border-bottom: 1px solid var(--ash);
}

.pp-step summary {
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  list-style: none;
}

.pp-step summary::-webkit-details-marker {
  display: none;
}

.pp-step summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  color: var(--gold);
  font-size: 16px;
  line-height: 1;
}

.pp-step[open] summary::after {
  content: "–";
  color: var(--cinnabar);
}

.pp-step summary:focus-visible {
  outline: 2px solid var(--celadon);
  outline-offset: 3px;
  border-radius: 4px;
}

.pp-step__no {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.pp-step__body {
  padding: 10px 0 0 34px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 版本 ---------- */
.pp-ver__fig {
  margin: 0;
  border-radius: var(--pp-radius);
  overflow: hidden;
}

.pp-ver__scale {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.pp-ver__k {
  display: block;
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--cinnabar);
  margin-bottom: 6px;
}

.pp-ver__item--now .pp-ver__k {
  font-size: 24px;
  color: var(--celadon);
}

.pp-ver__d {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.pp-ver__pulse {
  margin-top: clamp(22px, 3vw, 34px);
  background: var(--cinnabar-deep);
  color: var(--paper);
  border-radius: var(--pp-radius);
  padding: clamp(20px, 3vw, 28px);
  display: grid;
  gap: 12px;
}

.pp-ver__pulse p {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: rgba(244, 235, 221, 0.9);
}

.pp-ver__pulse-k {
  display: inline-block;
  min-width: 62px;
  margin-right: 10px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold-pale);
}

.pp-ver__more {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 下一步 ---------- */
.pp-next__grid {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(22px, 3vw, 34px);
}

.pp-next__card {
  background: var(--paper-lit);
  border: 1px solid var(--ash);
  border-radius: var(--pp-radius);
  padding: 20px;
}

.pp-next__no {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.pp-next__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--cinnabar);
}

.pp-next__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--ink-soft);
}

.pp-next__contact {
  margin-top: 18px;
  background: var(--cinnabar);
  color: var(--paper-lit);
  border-radius: var(--pp-radius);
  padding: clamp(22px, 3vw, 32px);
}

.pp-next__contact-label {
  margin: 0 0 6px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold-pale);
}

.pp-next__contact-val {
  margin: 0 0 12px;
  font-size: clamp(17px, 2.4vw, 22px);
  letter-spacing: 0.03em;
  word-break: break-all;
}

.pp-next__contact-note {
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(251, 247, 239, 0.86);
  max-width: 62ch;
}

.pp-next__back {
  display: inline-block;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .pp-cap__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pp-dl__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pp-cases__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pp-ver__scale {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .pp-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.72fr);
  }

  .pp-cap__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .pp-flow__cols {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }

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

@media (min-width: 1020px) {
  .pp-dl__layout {
    grid-template-columns: minmax(0, 1fr) 268px;
  }

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

  .pp-cases__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .pp-case--wide {
    grid-column: span 2;
  }

  .pp-ver__scale {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0 18px;
  }

  .pp-ver__item {
    position: relative;
    padding-top: 26px;
  }

  .pp-ver__item::before {
    content: "";
    position: absolute;
    top: 5px;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--pp-line);
  }

  .pp-ver__item::after {
    content: "";
    position: absolute;
    top: 1px;
    left: 0;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--gold-pale);
    border: 1px solid var(--gold);
  }

  .pp-ver__item--now::after {
    background: var(--celadon);
    border-color: var(--celadon);
    box-shadow: 0 0 0 4px rgba(79, 125, 110, 0.16);
  }
}

@media (prefers-reduced-motion: reduce) {
  .pp-doc,
  .pp-doc__icon,
  .pp-doc__note,
  .pp-case,
  .pp-filter__label {
    transition: none;
  }

  .pp-doc:hover,
  .pp-doc:focus-within {
    transform: none;
  }
}
<<<END>>>