.page-products {
  --pr-gap: 26px;
  padding-bottom: 84px;
}

.page-products .gkk-breadcrumb {
  padding-top: 26px;
}

/* ---------- 首屏 ---------- */

.pr-hero {
  position: relative;
  padding-top: 16px;
}

.pr-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(27, 42, 68, 0.5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27, 42, 68, 0.5) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(130% 85% at 72% 0%, #000 0%, transparent 74%);
  mask-image: radial-gradient(130% 85% at 72% 0%, #000 0%, transparent 74%);
  pointer-events: none;
}

.pr-hero > .gkk-container {
  position: relative;
  z-index: 1;
}

.pr-hero__grid {
  display: grid;
  gap: var(--pr-gap);
}

.pr-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(34px, 8vw, 56px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--text);
}

.pr-hero__lead {
  margin: 20px 0 0;
  max-width: 36ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.pr-hero__actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 版本状态面板 */

.pr-board {
  position: relative;
  isolation: isolate;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-800);
}

.pr-board__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.36;
}

.pr-board__inner {
  position: relative;
  z-index: 1;
  padding: 22px 20px 24px;
  background: linear-gradient(180deg, rgba(7, 14, 27, 0.6) 0%, rgba(7, 14, 27, 0.93) 100%);
}

.pr-board__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.pr-board__ver {
  font-family: var(--font-mono);
  font-size: clamp(32px, 9vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.pr-board__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.pr-board__row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.pr-board__val {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.03em;
  color: var(--text);
  overflow-wrap: anywhere;
}

.pr-board__val--cyan {
  color: var(--cyan);
}

/* ---------- 设备选择 ---------- */

.pr-device__grid {
  margin-top: var(--pr-gap);
  display: grid;
  gap: var(--pr-gap);
}

.pr-device__fig {
  margin: 0;
}

.pr-device__cards {
  display: grid;
  gap: 16px;
}

.pr-devcard {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
  padding: 20px 18px;
  transition: border-color 200ms var(--ease);
}

.pr-devcard:hover {
  border-color: var(--cyan-dim);
}

.pr-devcard__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.pr-devcard__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.pr-devcard__text {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

.pr-devcard__list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.pr-devcard__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--text);
}

.pr-devcard__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 1px;
  background: var(--cyan-dim);
}

/* ---------- 分角色清单 ---------- */

.pr-roles__top {
  display: grid;
  gap: var(--pr-gap);
}

.pr-roles__fig {
  margin: 0;
  max-width: 320px;
}

.pr-tabs {
  margin-top: 30px;
}

.pr-tabs .gkk-tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.pr-tabs .gkk-tab {
  appearance: none;
  -webkit-appearance: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.3;
  padding: 9px 14px;
  cursor: pointer;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.pr-tabs .gkk-tab:hover {
  color: var(--text);
  border-color: var(--cyan-dim);
}

.pr-tabs .gkk-tab[aria-selected="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-900);
  font-weight: 600;
}

.pr-tabs .gkk-tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.pr-tabs .gkk-tabpanel {
  padding-top: 22px;
}

.pr-tabs .gkk-tabpanel[hidden] {
  display: none;
}

.pr-tabs__hint {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

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

.pr-check {
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr);
  align-items: start;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan-dim);
  border-radius: 8px;
  background: var(--ink-800);
  transition: border-left-color 180ms var(--ease);
}

.pr-check:hover {
  border-left-color: var(--cyan);
}

.pr-check__box {
  width: 14px;
  height: 14px;
  margin-top: 3px;
  border: 1px solid var(--cyan-dim);
  border-radius: 3px;
  background: rgba(47, 227, 210, 0.07);
}

.pr-check__num {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.pr-check__text {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--text);
  overflow-wrap: anywhere;
}

/* ---------- 升级与回退 ---------- */

.pr-path__band {
  margin-top: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
  padding: 14px 16px 8px;
}

.pr-path__band svg {
  display: block;
  width: 100%;
  height: auto;
}

.pr-path__grid {
  margin-top: var(--pr-gap);
  display: grid;
  gap: var(--pr-gap);
}

.pr-path__fig {
  margin: 0;
}

.pr-path__steps {
  display: grid;
  gap: 14px;
}

.pr-step {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
  padding: 18px 18px 20px;
}

.pr-step__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.pr-step ol,
.pr-step ul {
  margin: 0;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--muted);
}

.pr-step li {
  margin-bottom: 7px;
}

.pr-step li:last-child {
  margin-bottom: 0;
}

.pr-step li::marker {
  color: var(--cyan);
}

.pr-step--back {
  border-left: 2px solid var(--gold);
}

.pr-step--back li::marker {
  color: var(--gold);
}

.pr-path__note {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 五项自检 ---------- */

.pr-self__grid {
  margin-top: var(--pr-gap);
  display: grid;
  gap: var(--pr-gap);
}

.pr-self__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.pr-self__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.pr-self__no {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.pr-self__body h3 {
  margin: 0 0 7px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.pr-self__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--muted);
}

.pr-self__aside {
  display: grid;
  gap: 18px;
  align-content: start;
}

.pr-self__fig {
  margin: 0;
}

.pr-self__note {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--violet);
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 人工协助 ---------- */

.pr-help__panel {
  display: grid;
  gap: 26px;
  padding: 26px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(47, 227, 210, 0.08) 0%, rgba(46, 51, 80, 0.16) 42%, rgba(242, 180, 87, 0.06) 100%),
    var(--ink-800);
}

.pr-help__title {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(24px, 5.4vw, 34px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--text);
}

.pr-help__text {
  margin: 16px 0 0;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.pr-help__actions {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.pr-help__contact .gkk-contact__item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.pr-help__contact .gkk-contact__val {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--cyan);
  overflow-wrap: anywhere;
}

.pr-help__contact .gkk-contact__note {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */

@media (min-width: 420px) {
  .pr-board__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 18px;
  }
}

@media (min-width: 760px) {
  .pr-hero__actions {
    gap: 14px;
  }

  .pr-checks {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 18px;
  }

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

@media (min-width: 900px) {
  .page-products {
    --pr-gap: 34px;
    padding-bottom: 104px;
  }

  .pr-hero__grid {
    grid-template-columns: 5fr 7fr;
    align-items: start;
    gap: 44px;
  }

  .pr-device__grid {
    grid-template-columns: 5fr 7fr;
    align-items: start;
    gap: 40px;
  }

  .pr-roles__top {
    grid-template-columns: 8fr 4fr;
    align-items: start;
    gap: 36px;
  }

  .pr-roles__fig {
    max-width: none;
  }

  .pr-path__grid {
    grid-template-columns: 5fr 7fr;
    align-items: start;
    gap: 36px;
  }

  .pr-self__grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
    gap: 44px;
  }

  .pr-self__aside {
    position: sticky;
    top: 24px;
  }

  .pr-help__panel {
    grid-template-columns: 6fr 5fr;
    gap: 40px;
    padding: 38px 34px;
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .pr-tabs .gkk-tab {
    font-size: 14.5px;
    padding: 10px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .pr-tabs .gkk-tab,
  .pr-devcard,
  .pr-check {
    transition: none;
  }
}
<<<END>>>