.page-products {
  --pp-gap: 28px;
}

.page-products .crumbs {
  padding: 18px 0 2px;
}

/* ---------- 首屏 ---------- */
.page-products .pp-hero {
  padding-top: 10px;
}

.page-products .pp-hero__grid {
  display: grid;
  gap: 30px;
}

.page-products .pp-hero__title {
  font-family: var(--font-title);
  font-size: clamp(29px, 6.4vw, 48px);
  line-height: 1.16;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--paper);
  margin: 10px 0 16px;
  max-width: 15em;
}

.page-products .pp-hero__lede {
  color: var(--mist);
  max-width: 34em;
}

.page-products .pp-hero__note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 1px solid var(--orbit);
  font-size: var(--fs-aux);
  line-height: 1.7;
  color: var(--mist-soft);
  max-width: 34em;
}

.page-products .pp-card {
  border: 1px solid var(--orbit);
  background: var(--nebula);
  padding: 22px;
  position: relative;
}

.page-products .pp-card::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 26px;
  height: 3px;
  background: linear-gradient(90deg, var(--violet), var(--cyan));
}

.page-products .pp-card__ver {
  font-size: clamp(32px, 7vw, 48px);
  line-height: 1;
  color: var(--cyan);
  margin: 6px 0 20px;
  letter-spacing: -.02em;
}

.page-products .pp-facts {
  margin: 0 0 22px;
  border-top: 1px solid var(--orbit);
}

.page-products .pp-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid var(--orbit);
  font-size: var(--fs-aux);
}

.page-products .pp-facts__row dt {
  color: var(--mist);
  flex: 0 0 auto;
}

.page-products .pp-facts__row dd {
  margin: 0;
  color: var(--paper);
  text-align: right;
}

.page-products .pp-card__btn {
  width: 100%;
  text-align: center;
}

/* ---------- 本页目录条 ---------- */
.page-products .pp-toc {
  margin-top: 44px;
  border-top: 1px solid var(--orbit);
  border-bottom: 1px solid var(--orbit);
  background: linear-gradient(90deg, rgba(138, 92, 246, .12), rgba(53, 224, 208, .07) 55%, transparent);
  position: relative;
}

.page-products .pp-toc::before,
.page-products .pp-toc::after {
  content: "";
  position: absolute;
  top: -3px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
}

.page-products .pp-toc::before {
  left: var(--gutter);
  background: var(--gold);
}

.page-products .pp-toc::after {
  right: var(--gutter);
  background: var(--cyan);
}

.page-products .pp-toc__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.page-products .pp-toc__link {
  font-family: var(--font-mono);
  font-size: var(--fs-tiny);
  letter-spacing: .06em;
  color: var(--mist);
  text-decoration: none;
  padding: 3px 0;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .pp-toc__link:hover,
.page-products .pp-toc__link:focus-visible,
.page-products .pp-toc__link[aria-current] {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

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

/* ---------- 通用章节头 ---------- */
.page-products .pp-head {
  max-width: 46em;
  margin-bottom: 26px;
}

.page-products .pp-head__title {
  font-family: var(--font-title);
  font-size: clamp(23px, 4.4vw, 36px);
  line-height: 1.22;
  letter-spacing: -.015em;
  color: var(--paper);
  margin: 8px 0 12px;
}

.page-products .pp-head__sub {
  margin: 0;
  color: var(--mist);
  font-size: var(--fs-body);
  max-width: 36em;
}

/* ---------- 插图 ---------- */
.page-products .pp-shot {
  margin: 0 0 30px;
  border: 1px solid var(--orbit);
  background: var(--nebula);
}

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

.page-products .pp-shot__cap {
  border-top: 1px solid var(--orbit);
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-tiny);
  color: var(--mist);
  letter-spacing: .02em;
}

/* ---------- 栏目结构树 ---------- */
.page-products .pp-tree {
  border-left: 1px solid var(--orbit);
  padding-left: 16px;
  margin-bottom: 24px;
}

.page-products .pp-tree__node {
  border-bottom: 1px dashed var(--orbit);
}

.page-products .pp-tree__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-products .pp-tree__head::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: var(--fs-aux);
  color: var(--cyan);
  width: 12px;
  flex: 0 0 auto;
}

.page-products .pp-tree__node[open] > .pp-tree__head::before {
  content: "−";
}

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

.page-products .pp-tree__no {
  font-size: var(--fs-tiny);
  color: var(--violet);
  letter-spacing: .08em;
}

.page-products .pp-tree__name {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--paper);
}

.page-products .pp-tree__hint {
  margin-left: auto;
  font-size: var(--fs-tiny);
  color: var(--gold);
  letter-spacing: .08em;
}

.page-products .pp-tree__list {
  list-style: none;
  margin: 0 0 16px;
  padding: 4px 0 0 18px;
  border-left: 1px solid var(--orbit);
  display: grid;
  gap: 9px;
}

.page-products .pp-tree__list li {
  color: var(--mist);
  font-size: var(--fs-aux);
}

/* ---------- 步骤带 ---------- */
.page-products .pp-steps {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--orbit);
  border-left: 1px solid var(--orbit);
}

.page-products .pp-step {
  padding: 18px 16px 20px;
  border-bottom: 1px solid var(--orbit);
  border-right: 1px solid var(--orbit);
  display: grid;
  gap: 8px;
  align-content: start;
  transition: background var(--dur) var(--ease);
}

.page-products .pp-step:hover {
  background: rgba(28, 43, 74, .38);
}

.page-products .pp-step__no {
  font-size: var(--fs-tiny);
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-products .pp-step__title {
  margin: 0;
  font-size: var(--fs-body);
  color: var(--paper);
  font-weight: 700;
}

.page-products .pp-step__text {
  margin: 0;
  font-size: var(--fs-aux);
  color: var(--mist);
}

.page-products .pp-step__tip {
  margin: 4px 0 0;
  padding-left: 11px;
  border-left: 1px solid var(--orbit);
  font-size: var(--fs-tiny);
  line-height: 1.7;
  color: var(--mist-soft);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-products .pp-step:hover .pp-step__tip {
  border-left-color: var(--gold);
  color: var(--mist);
}

/* ---------- 登录与收藏 ---------- */
.page-products .pp-signin__grid {
  display: grid;
  gap: 30px;
}

.page-products .pp-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-products .pp-points li {
  padding-left: 16px;
  border-left: 1px solid var(--orbit);
  color: var(--mist);
  font-size: var(--fs-aux);
  line-height: 1.75;
}

.page-products .pp-points strong {
  display: block;
  margin-bottom: 5px;
  color: var(--paper);
  font-size: var(--fs-body);
  font-weight: 700;
}

.page-products .pp-signin__shot {
  margin-bottom: 0;
}

/* ---------- 系统要求 ---------- */
.page-products .pp-spec {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 30px;
  font-size: var(--fs-aux);
  border-top: 1px solid var(--orbit);
}

.page-products .pp-spec th,
.page-products .pp-spec td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--orbit);
  text-align: left;
  vertical-align: top;
  font-weight: 400;
}

.page-products .pp-spec th {
  color: var(--mist);
  width: 34%;
  white-space: nowrap;
}

.page-products .pp-spec td {
  color: var(--paper);
}

.page-products .pp-trouble {
  border: 1px solid var(--orbit);
  background: var(--nebula);
  padding: 22px;
}

.page-products .pp-trouble__title {
  margin: 0 0 16px;
  font-size: var(--fs-sm);
  color: var(--paper);
}

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

.page-products .pp-trouble__list li {
  padding-left: 14px;
  border-left: 1px solid var(--orbit);
  color: var(--mist);
  font-size: var(--fs-aux);
  line-height: 1.7;
}

.page-products .pp-trouble .note {
  margin: 18px 0 0;
}

/* ---------- 新旧对照 ---------- */
.page-products .pp-diff thead th {
  color: var(--mist-soft);
  font-family: var(--font-mono);
  font-size: var(--fs-tiny);
  letter-spacing: .08em;
  white-space: normal;
}

.page-products .pp-diff tbody tr {
  transition: background var(--dur) var(--ease);
}

.page-products .pp-diff tbody tr:hover {
  background: rgba(28, 43, 74, .35);
}

.page-products .pp-diff__new {
  border-left: 2px solid var(--violet);
  padding-left: 12px;
  color: var(--paper);
}

.page-products .pp-diff__old {
  border-left: 2px solid var(--wine);
  padding-left: 12px;
  color: var(--mist);
}

/* ---------- 延伸入口 ---------- */
.page-products .pp-next {
  border-top: 1px solid var(--orbit);
}

.page-products .pp-next__title {
  font-family: var(--font-title);
  font-size: clamp(20px, 3.6vw, 28px);
  color: var(--paper);
  margin: 0 0 22px;
  letter-spacing: -.01em;
}

.page-products .pp-next__grid {
  display: grid;
  gap: 1px;
  background: var(--orbit);
  border: 1px solid var(--orbit);
}

.page-products .pp-next__item {
  background: var(--nebula);
  padding: 22px;
  display: grid;
  gap: 9px;
  text-decoration: none;
  color: var(--mist);
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-products .pp-next__item:hover,
.page-products .pp-next__item:focus-visible {
  background: #131E3A;
  transform: translateY(-2px);
}

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

.page-products .pp-next__no {
  font-size: var(--fs-tiny);
  color: var(--gold);
  letter-spacing: .14em;
}

.page-products .pp-next__label {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--paper);
}

.page-products .pp-next__desc {
  font-size: var(--fs-aux);
  line-height: 1.7;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 760px) {
  .page-products .pp-toc__inner {
    gap: 6px 30px;
  }

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

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

/* ---------- 桌面端 ---------- */
@media (min-width: 980px) {
  .page-products .pp-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 52px;
    align-items: start;
  }

  .page-products .pp-card {
    padding: 26px 26px 28px;
    margin-top: 6px;
  }

  .page-products .pp-shot {
    margin-bottom: 36px;
  }

  .page-products .pp-steps {
    grid-template-columns: repeat(5, 1fr);
  }

  .page-products .pp-step {
    padding: 20px 16px 26px;
  }

  .page-products .pp-signin__grid {
    grid-template-columns: 7fr 5fr;
    gap: 46px;
    align-items: start;
  }

  .page-products .pp-signin__shot {
    margin-top: 8px;
  }

  .page-products .pp-spec th {
    width: 22%;
  }

  .page-products .pp-trouble {
    padding: 26px 28px;
  }

  .page-products .pp-diff tbody td:last-child {
    width: 45%;
  }
}

/* ---------- 窄屏对照表转为纵向条目 ---------- */
@media (max-width: 719px) {
  .page-products .pp-diff {
    border-top: 0;
  }

  .page-products .pp-diff thead {
    display: none;
  }

  .page-products .pp-diff tbody tr {
    display: block;
    padding: 14px 0;
    border-bottom: 1px solid var(--orbit);
  }

  .page-products .pp-diff tbody td {
    display: block;
    width: auto;
    border-bottom: 0;
    padding: 3px 0 7px;
    font-size: var(--fs-aux);
  }

  .page-products .pp-diff__new,
  .page-products .pp-diff__old {
    padding-left: 12px;
  }
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-products .pp-step,
  .page-products .pp-step__tip,
  .page-products .pp-next__item,
  .page-products .pp-toc__link,
  .page-products .pp-diff tbody tr {
    transition: none;
  }

  .page-products .pp-next__item:hover,
  .page-products .pp-next__item:focus-visible {
    transform: none;
  }
}