.page-products {
  --pp-rail-w: 234px;
  --pp-sticky: 104px;
  --pp-grid-line: rgba(201, 214, 222, .42);
  padding-bottom: clamp(56px, 9vw, 104px);
  color: var(--c-lake);
}

/* ---------- 首屏 ---------- */
.page-products .pp-head {
  position: relative;
  padding: clamp(26px, 5vw, 58px) 0 clamp(22px, 3.6vw, 40px);
  border-bottom: 2px solid var(--c-lake);
  overflow: hidden;
}

.page-products .pp-head::after {
  content: "";
  position: absolute;
  top: -50px;
  right: -70px;
  width: 480px;
  height: 340px;
  background:
    repeating-linear-gradient(0deg, var(--pp-grid-line) 0 1px, transparent 1px 42px),
    repeating-linear-gradient(90deg, var(--pp-grid-line) 0 1px, transparent 1px 42px);
  -webkit-mask-image: radial-gradient(120% 100% at 100% 0%, #000 0%, transparent 72%);
  mask-image: radial-gradient(120% 100% at 100% 0%, #000 0%, transparent 72%);
  pointer-events: none;
  z-index: 0;
}

.page-products .pp-head > * {
  position: relative;
  z-index: 1;
}

.page-products .pp-head__kicker {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--c-orange);
}

.page-products .pp-head__title {
  margin: 0 0 18px;
  max-width: 20em;
  font-family: var(--font-display);
  font-size: clamp(30px, 5.4vw, 54px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: .04em;
  color: var(--c-lake);
}

.page-products .pp-head__lede {
  margin: 0;
  max-width: 56ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--c-gravel);
}

.page-products .pp-head__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin: 26px 0 0;
  padding: 16px 0 0;
  border-top: var(--hairline);
  list-style: none;
}

.page-products .pp-head__stats li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13.5px;
  color: var(--c-gravel);
}

.page-products .pp-head__num {
  font-size: 24px;
  font-weight: 700;
  color: var(--c-orange);
}

/* ---------- 研究板骨架 ---------- */
.page-products .pp-board {
  margin-top: clamp(24px, 4vw, 46px);
}

.page-products .pp-rail {
  margin-bottom: 22px;
}

.page-products .pp-rail__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--c-gravel);
}

.page-products .pp-toc {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
}

.page-products .pp-toc__link {
  flex: 0 0 auto;
  padding: 8px 14px;
  border: var(--hairline);
  border-radius: var(--radius);
  background: var(--c-white);
  color: var(--c-lake-mid);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .2s var(--ease), color .2s var(--ease), background-color .2s var(--ease);
}

.page-products .pp-toc__link:hover {
  border-color: var(--c-lake-mid);
  color: var(--c-lake);
}

.page-products .pp-toc__link[aria-current="true"] {
  border-color: var(--c-orange);
  background: var(--c-orange-soft);
  color: var(--c-lake);
  font-weight: 700;
}

/* ---------- 章节 ---------- */
.page-products .pp-sec {
  padding: clamp(30px, 5vw, 56px) 0;
  border-top: var(--hairline);
}

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

.page-products .pp-sec__head {
  max-width: 62ch;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-products .pp-sec__no {
  display: inline-block;
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: .24em;
  color: var(--c-orange);
}

.page-products .pp-sec__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.2vw, 32px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: .03em;
  color: var(--c-lake);
}

.page-products .pp-sec__lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-gravel);
}

/* ---------- 图片 ---------- */
.page-products .pp-fig {
  margin: 0 0 clamp(18px, 3vw, 28px);
}

.page-products .pp-fig .media__frame {
  aspect-ratio: auto;
  overflow: hidden;
  background: var(--c-mist);
  border: var(--hairline);
  border-radius: var(--radius);
}

.page-products .pp-fig img {
  display: block;
  width: 100%;
  height: auto;
}

.page-products .pp-fig .media__caption {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-gravel);
}

.page-products .pp-fig--tiers {
  margin-top: clamp(18px, 3vw, 28px);
}

/* ---------- 栏目分类 ---------- */
.page-products .pp-cats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .pp-cats__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 12px;
  align-items: baseline;
  padding: 14px 16px;
  background: var(--c-white);
  border: var(--hairline);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}

.page-products .pp-cats__item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}

.page-products .pp-cats__idx {
  grid-row: 1 / span 2;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-gravel);
}

.page-products .pp-cats__name {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-lake);
}

.page-products .pp-cats__flag {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 7px;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .04em;
  color: var(--c-lake);
  background: var(--c-orange-soft);
  border-radius: 999px;
  vertical-align: 2px;
}

.page-products .pp-cats__hint {
  grid-column: 2;
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-gravel);
}

.page-products .pp-cats__item--key {
  border-color: var(--c-orange);
  background: linear-gradient(180deg, var(--c-orange-soft) 0%, var(--c-white) 78%);
}

.page-products .pp-cats__item--key .pp-cats__idx {
  color: var(--c-orange);
}

/* ---------- 时间轴 ---------- */
.page-products .pp-cycle {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

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

.page-products .pp-tl {
  position: relative;
  margin: 0;
  padding: 0 0 0 34px;
  list-style: none;
}

.page-products .pp-tl::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 12px;
  bottom: 16px;
  width: 2px;
  background: var(--c-line);
}

.page-products .pp-tl__item {
  position: relative;
  margin-bottom: 12px;
}

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

.page-products .pp-tl__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 20px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-orange);
  border: 2px solid var(--c-white);
  box-shadow: 0 0 0 2px var(--c-orange);
  z-index: 1;
}

.page-products .pp-tl__item:last-child::before {
  background: var(--c-barley);
  box-shadow: 0 0 0 2px var(--c-barley);
}

.page-products .pp-tl__card {
  background: var(--c-white);
  border: var(--hairline);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
}

.page-products .pp-tl__card:hover {
  transform: translateY(-2px);
  border-color: var(--c-lake-mid);
  box-shadow: var(--shadow-lift);
}

.page-products .pp-tl__btn {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 15px 16px;
  background: transparent;
  border: 0;
  font: inherit;
  text-align: left;
  color: var(--c-lake);
  cursor: pointer;
}

.page-products .pp-tl__no {
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--c-orange);
}

.page-products .pp-tl__name {
  flex: 1 1 auto;
  font-size: 16px;
  font-weight: 700;
}

.page-products .pp-tl__cue {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
}

.page-products .pp-tl__cue::before,
.page-products .pp-tl__cue::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--c-lake-mid);
  transition: transform .2s var(--ease);
}

.page-products .pp-tl__cue::before {
  width: 12px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-products .pp-tl__cue::after {
  width: 2px;
  height: 12px;
  transform: translate(-50%, -50%);
}

.page-products .pp-tl__card[data-open] .pp-tl__cue::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-products .pp-tl__panel .fold__body {
  padding: 14px 16px 16px;
  border-top: 1px dashed var(--c-line);
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-gravel);
}

.page-products .pp-tl__panel .fold__body p {
  margin: 0;
}

/* ---------- 价签档位 ---------- */
.page-products .pp-tiers {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-products .pp-tagcard {
  position: relative;
  background: var(--c-white);
  border: var(--hairline);
  border-left: 3px dashed var(--c-orange);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}

.page-products .pp-tagcard:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

.page-products .pp-tagcard__face {
  position: relative;
  display: block;
  width: 100%;
  padding: 22px 20px 18px;
  background: transparent;
  border: 0;
  font: inherit;
  text-align: left;
  color: var(--c-lake);
  cursor: pointer;
}

.page-products .pp-tagcard__hole {
  position: absolute;
  top: 16px;
  right: 18px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-mist);
  border: 1px solid var(--c-line);
}

.page-products .pp-tagcard__tier {
  display: block;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--c-gravel);
}

.page-products .pp-tagcard__mark {
  display: block;
  margin: 6px 0 10px;
  font-size: clamp(38px, 6vw, 52px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--c-lake);
}

.page-products .pp-tagcard__name {
  display: block;
  font-size: 17px;
  font-weight: 700;
}

.page-products .pp-tagcard__hint {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--c-gravel);
}

.page-products .pp-tagcard__panel .fold__body {
  padding: 14px 20px 18px;
  border-top: 1px dashed var(--c-line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-gravel);
}

.page-products .pp-tagcard__scope {
  margin: 0 0 8px;
}

.page-products .pp-tagcard__for {
  margin: 0;
  color: var(--c-lake-mid);
}

.page-products .pp-note {
  margin: 0;
  padding: 15px 18px;
  background: var(--c-orange-soft);
  border-left: 3px solid var(--c-orange);
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-lake);
}

/* ---------- 校对环节 ---------- */
.page-products .pp-checks {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: clamp(18px, 3vw, 26px);
}

.page-products .pp-checks__item {
  position: relative;
  padding: 20px 18px 18px;
  background: var(--c-white);
  border: var(--hairline);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.page-products .pp-checks__item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-lake-mid), var(--c-barley));
}

.page-products .pp-checks__step {
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--c-barley);
}

.page-products .pp-checks__item h3 {
  margin: 8px 0;
  font-size: 17px;
  color: var(--c-lake);
}

.page-products .pp-checks__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-gravel);
}

.page-products .pp-team {
  display: grid;
  gap: 12px;
  padding: 18px 20px;
  background: var(--c-mist);
  border: var(--hairline);
  border-left: 3px solid var(--c-barley);
  border-radius: var(--radius);
}

.page-products .pp-team__title {
  margin: 0;
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--c-gravel);
}

.page-products .pp-team__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .pp-team__list li {
  font-size: 15px;
  color: var(--c-lake);
}

.page-products .pp-team__list b {
  margin-right: 5px;
  font-family: var(--font-num);
  font-size: 18px;
  color: var(--c-orange);
}

/* ---------- 设备适配 ---------- */
.page-products .pp-facts {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  border-top: var(--hairline);
}

.page-products .pp-facts li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3px;
  padding: 13px 2px;
  border-bottom: var(--hairline);
  font-size: 15px;
}

.page-products .pp-facts__k {
  font-size: 13.5px;
  color: var(--c-gravel);
}

.page-products .pp-facts__v {
  color: var(--c-lake);
  line-height: 1.75;
}

.page-products .pp-facts__foot {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-gravel);
}

.page-products .pp-facts__foot a {
  color: var(--c-lake-mid);
  text-decoration: none;
  border-bottom: 1px solid var(--c-line);
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

.page-products .pp-facts__foot a:hover {
  color: var(--c-lake);
  border-bottom-color: var(--c-orange);
}

/* ---------- 临时查询 ---------- */
.page-products .pp-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.page-products .pp-contact__card {
  padding: 20px;
  background: var(--c-white);
  border: var(--hairline);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.page-products .pp-contact__label {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--c-gravel);
}

.page-products .pp-contact__value {
  margin: 0 0 14px;
  font-family: var(--font-num);
  font-size: clamp(16px, 2.4vw, 20px);
  letter-spacing: .01em;
  color: var(--c-lake);
  overflow-wrap: anywhere;
}

.page-products .pp-contact__meta {
  margin: 0 0 14px;
  font-size: 14px;
  color: var(--c-gravel);
}

.page-products [data-copied] {
  border-color: var(--c-barley) !important;
  color: var(--c-barley) !important;
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-products .pp-cats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .pp-facts li {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

@media (min-width: 720px) {
  .page-products .pp-checks {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

  .page-products .pp-team {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 26px;
  }
}

@media (min-width: 900px) {
  .page-products .pp-cycle {
    grid-template-columns: minmax(0, 1fr) 290px;
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-products .pp-board {
    display: grid;
    grid-template-columns: var(--pp-rail-w) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-products .pp-rail {
    position: sticky;
    top: var(--pp-sticky);
    margin-bottom: 0;
  }

  .page-products .pp-toc {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-products .pp-toc__link {
    padding: 9px 12px;
    border: 0;
    border-left: 3px solid transparent;
    border-radius: 0;
    background: transparent;
    font-size: 15px;
    white-space: normal;
    line-height: 1.5;
  }

  .page-products .pp-toc__link:hover {
    background: var(--c-mist);
    border-left-color: var(--c-line);
  }

  .page-products .pp-toc__link[aria-current="true"] {
    background: transparent;
    border-left-color: var(--c-orange);
    color: var(--c-lake);
    font-weight: 700;
  }
}

@media (min-width: 1060px) {
  .page-products .pp-cats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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