.page-products {
  --pp-line: rgba(16, 20, 24, .16);
  --pp-line-light: rgba(250, 246, 239, .22);
  --pp-muted: rgba(16, 20, 24, .68);
  --pp-soft: #6E8698;
}

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

/* ---------- 首屏 ---------- */

.page-products .pp-hero {
  padding-top: 20px;
}

.page-products .pp-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-products .pp-hero__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 7.4vw, 58px);
  line-height: 1.16;
  letter-spacing: -.015em;
  color: var(--ink);
  margin: 14px 0 18px;
  max-width: 17ch;
}

.page-products .pp-hero__lede {
  font-size: 17px;
  line-height: 1.85;
  color: var(--pp-muted);
  max-width: 42em;
  margin: 0;
}

.page-products .pp-hero__side {
  border-top: 2px solid var(--ink);
  padding-top: 14px;
}

.page-products .pp-hero__side-title {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--pp-muted);
  margin: 0;
}

.page-products .pp-jump {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .pp-jump a {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num label"
    "num hint";
  gap: 3px 16px;
  align-items: center;
  padding: 13px 16px;
  background: var(--paper);
  border: 1px solid var(--pp-line);
  text-decoration: none;
  color: var(--ink);
  transition: border-color .22s ease, transform .22s ease;
}

.page-products .pp-jump a:hover {
  border-color: var(--orange);
  transform: translateX(4px);
}

.page-products .pp-jump__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-products .pp-jump__label {
  grid-area: label;
  font-weight: 800;
  font-size: 15.5px;
}

.page-products .pp-jump__hint {
  grid-area: hint;
  font-size: 12.5px;
  color: var(--pp-muted);
}

/* ---------- 三类对照 ---------- */

.page-products .pp-compare__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 24px;
}

.page-products .pp-compare__col {
  padding: 20px 18px 22px;
  border: 1px solid var(--pp-line);
  border-top-width: 4px;
  background: var(--paper);
}

.page-products .pp-compare__col--home {
  border-top-color: var(--orange);
  background: var(--mist);
}

.page-products .pp-compare__col--biz {
  border-top-color: var(--teal);
  background: var(--sand);
}

.page-products .pp-compare__col--proj {
  border-top-color: var(--mustard);
  background: var(--indigo);
  border-color: var(--indigo);
  color: var(--paper);
}

.page-products .pp-compare__head {
  display: flex;
  align-items: center;
  gap: 14px;
}

.page-products .pp-compare__count {
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
}

.page-products .pp-compare__col--proj .pp-compare__count {
  color: var(--mustard);
}

.page-products .pp-compare__name {
  font-size: 19px;
  font-weight: 900;
  margin: 0;
}

.page-products .pp-compare__sub {
  margin: 4px 0 0;
  font-size: 12.5px;
  color: var(--pp-muted);
}

.page-products .pp-compare__col--proj .pp-compare__sub {
  color: rgba(250, 246, 239, .68);
}

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

.page-products .pp-compare__rows > div {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px dashed var(--pp-line);
}

.page-products .pp-compare__rows dt {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--pp-muted);
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

.page-products .pp-compare__rows dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
}

.page-products .pp-compare__col--proj .pp-compare__rows > div {
  border-top-color: var(--pp-line-light);
}

.page-products .pp-compare__col--proj .pp-compare__rows dt {
  color: rgba(250, 246, 239, .6);
}

/* ---------- 筛选与矩阵 ---------- */

.page-products .pp-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--pp-line);
}

.page-products .pp-filter {
  display: inline-block;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .05em;
  text-decoration: none;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--pp-line);
  transition: border-color .2s ease, color .2s ease, background .2s ease;
}

.page-products .pp-filter:hover {
  border-color: var(--orange);
  color: var(--paper);
  background: var(--orange);
}

.page-products .pp-filter--home:hover {
  background: var(--teal);
  border-color: var(--teal);
}

.page-products .pp-filter--biz:hover {
  background: var(--indigo);
  border-color: var(--indigo);
}

.page-products .pp-filter--proj:hover {
  background: var(--wine);
  border-color: var(--wine);
}

.page-products .pp-group {
  padding: 38px 0 6px;
  scroll-margin-top: 96px;
}

.page-products .pp-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--pp-line);
}

.page-products .pp-sticker {
  display: inline-block;
  padding: 5px 13px;
  background: var(--mustard);
  color: var(--ink);
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 12.5px;
  letter-spacing: .12em;
  transform: rotate(-1.6deg);
  box-shadow: 2px 2px 0 rgba(16, 20, 24, .2);
}

.page-products .pp-group__title {
  font-size: 22px;
  font-weight: 900;
  margin: 0;
  color: var(--ink);
}

.page-products .pp-group__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--pp-muted);
}

.page-products .pp-group__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 24px;
}

.page-products .pp-group__layout--flip .pp-group__fig {
  order: -1;
}

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

.page-products .pp-cards {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-products .pp-cards--home {
  grid-template-columns: repeat(auto-fill, minmax(188px, 1fr));
}

.page-products .pp-cards--biz {
  grid-template-columns: repeat(auto-fill, minmax(228px, 1fr));
}

.page-products .pp-cards--proj {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.page-products .pp-card {
  display: flex;
  flex-direction: column;
  padding: 16px 15px 14px;
  background: var(--paper);
  border: 1px solid var(--pp-line);
  position: relative;
}

.page-products .pp-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 12px;
  height: 12px;
  border-top: 2px solid var(--orange);
  border-left: 2px solid var(--orange);
}

.page-products .pp-card__code {
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--teal);
  margin: 0;
  line-height: 1.1;
}

.page-products .pp-card__name {
  font-size: 15px;
  font-weight: 800;
  color: var(--ink);
  margin: 5px 0 8px;
}

.page-products .pp-card__scene {
  font-size: 13px;
  line-height: 1.72;
  color: var(--pp-muted);
  margin: 0 0 12px;
  flex: 1 1 auto;
}

.page-products .pp-card__more {
  border-top: 1px dashed var(--pp-line);
  padding-top: 10px;
}

.page-products .pp-card__more summary {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  list-style: none;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--orange-deep);
}

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

.page-products .pp-card__more summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1;
}

.page-products .pp-card__more[open] summary::before {
  content: "\2212";
}

.page-products .pp-card__list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.page-products .pp-card__list li {
  position: relative;
  padding-left: 16px;
  font-size: 12.5px;
  line-height: 1.62;
  color: var(--pp-muted);
}

.page-products .pp-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 7px;
  height: 7px;
  border: 1px solid var(--teal);
}

/* ---------- 图片框 ---------- */

.page-products .pp-figure {
  margin: 0;
  padding: 10px 10px 0;
  background: var(--sand);
  border: 1px solid var(--pp-line);
}

.page-products .pp-figure--tilt {
  transform: rotate(-.6deg);
}

.page-products .pp-figure__cap {
  padding: 10px 2px 12px;
  font-size: 12.5px;
  line-height: 1.65;
  color: rgba(16, 20, 24, .66);
}

/* ---------- 命名规则 ---------- */

.page-products .pp-naming {
  margin-top: 56px;
  background: var(--teal);
  color: var(--paper);
}

.page-products .pp-naming .section-head__title {
  color: var(--paper);
}

.page-products .pp-naming .section-head__note {
  color: rgba(250, 246, 239, .62);
}

.page-products .pp-naming__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 26px;
}

.page-products .pp-naming__body p {
  font-size: 16px;
  line-height: 1.88;
  color: rgba(250, 246, 239, .86);
  margin: 0 0 16px;
  max-width: 40em;
}

.page-products .pp-naming__ref {
  font-size: 14px !important;
  padding-left: 14px;
  border-left: 2px solid var(--mustard);
}

.page-products .pp-naming__ref a {
  color: var(--mustard);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .pp-naming__diagram {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-products .pp-seg {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: center;
  padding: 13px 15px;
  background: rgba(250, 246, 239, .06);
  border: 1px solid var(--pp-line-light);
}

.page-products .pp-seg__val {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  min-width: 64px;
  padding: 9px 6px;
  text-align: center;
  color: var(--ink);
}

.page-products .pp-seg--cls .pp-seg__val {
  background: var(--orange);
  color: var(--paper);
}

.page-products .pp-seg--series .pp-seg__val {
  background: var(--mustard);
}

.page-products .pp-seg--cap .pp-seg__val {
  background: var(--sand);
}

.page-products .pp-seg__desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(250, 246, 239, .84);
}

.page-products .pp-naming__fig {
  margin-top: 6px;
  background: rgba(250, 246, 239, .08);
  border-color: var(--pp-line-light);
}

.page-products .pp-naming__fig .pp-figure__cap {
  color: rgba(250, 246, 239, .6);
}

/* ---------- 安装条件 ---------- */

.page-products .pp-install__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  margin-top: 24px;
}

.page-products .pp-reqs {
  list-style: none;
  margin: 0;
  padding: 0;
  background: var(--paper);
  border: 1px solid var(--pp-line);
}

.page-products .pp-req {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 12px;
  padding: 15px 16px;
}

.page-products .pp-req + .pp-req {
  border-top: 1px dashed var(--pp-line);
}

.page-products .pp-req__box {
  width: 14px;
  height: 14px;
  margin-top: 4px;
  border: 1.5px solid var(--teal);
  position: relative;
  flex: none;
}

.page-products .pp-req__box::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 0;
  width: 4px;
  height: 8px;
  border-right: 2px solid var(--teal);
  border-bottom: 2px solid var(--teal);
  transform: rotate(40deg);
}

.page-products .pp-req__name {
  display: block;
  font-size: 14px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 5px;
}

.page-products .pp-req__text {
  display: block;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--pp-muted);
}

.page-products .pp-req--soft .pp-req__box {
  border-color: var(--pp-soft);
}

.page-products .pp-req--soft .pp-req__box::after {
  border-right-color: var(--pp-soft);
  border-bottom-color: var(--pp-soft);
}

.page-products .pp-req--soft .pp-req__name,
.page-products .pp-req--soft .pp-req__text {
  color: var(--pp-soft);
}

.page-products .pp-install__aside {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-products .pp-install__note {
  padding: 18px;
  background: var(--ink);
  color: var(--paper);
}

.page-products .pp-install__note-title {
  font-size: 15px;
  font-weight: 800;
  margin: 0 0 8px;
  color: var(--mustard);
}

.page-products .pp-install__note p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: rgba(250, 246, 239, .82);
}

.page-products .pp-install__note a {
  color: var(--orange);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 四步选型 ---------- */

.page-products .pp-path__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-products .pp-path__title {
  font-size: clamp(24px, 4.4vw, 34px);
  font-weight: 900;
  line-height: 1.28;
  color: var(--ink);
  margin: 12px 0 14px;
}

.page-products .pp-path__intro p {
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--pp-muted);
  margin: 0 0 22px;
}

.page-products .pp-path__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-products .pp-step {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 14px;
  padding: 18px 16px;
  background: var(--paper);
  border: 1px solid var(--pp-line);
}

.page-products .pp-step__num {
  font-family: var(--font-mono);
  font-size: 27px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-products .pp-step__body h3 {
  font-size: 15.5px;
  font-weight: 800;
  margin: 0 0 6px;
  color: var(--ink);
}

.page-products .pp-step__body p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--pp-muted);
}

/* ---------- 组合与替换 ---------- */

.page-products .pp-combos__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  margin-top: 24px;
}

.page-products .pp-acc {
  background: var(--paper);
  border: 1px solid var(--pp-line);
}

.page-products .pp-acc + .pp-acc {
  border-top: 0;
}

.page-products .pp-acc summary {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  cursor: pointer;
  list-style: none;
  padding: 16px 17px;
  font-size: 15px;
  font-weight: 800;
  color: var(--ink);
  line-height: 1.5;
}

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

.page-products .pp-acc summary::after {
  content: "\FF0B";
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--orange);
  flex: none;
}

.page-products .pp-acc[open] summary::after {
  content: "\FF0D";
}

.page-products .pp-acc[open] summary {
  background: var(--mist);
}

.page-products .pp-acc__body {
  padding: 0 17px 18px;
  font-size: 14px;
  line-height: 1.82;
  color: var(--pp-muted);
  border-top: 1px dashed var(--pp-line);
  padding-top: 14px;
}

.page-products .pp-combos__tips {
  padding: 20px 18px;
  background: var(--wine);
  color: var(--paper);
  align-self: start;
}

.page-products .pp-combos__tips-title {
  margin: 0 0 14px;
  font-size: 15px;
  font-weight: 800;
  color: var(--sand);
}

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

.page-products .pp-tips li {
  display: grid;
  gap: 4px;
  padding-top: 12px;
  border-top: 1px solid rgba(250, 246, 239, .22);
}

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

.page-products .pp-tips__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mustard);
}

.page-products .pp-tips__text {
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(250, 246, 239, .86);
}

/* ---------- 下一步 ---------- */

.page-products .pp-next {
  padding-bottom: 64px;
}

.page-products .pp-next__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-products .pp-next__item {
  display: block;
  padding: 18px 17px;
  background: var(--teal);
  color: var(--paper);
  text-decoration: none;
  transition: background .22s ease, transform .22s ease;
}

.page-products .pp-next__item:hover {
  background: var(--teal-deep);
  transform: translateY(-3px);
}

.page-products .pp-next__label {
  display: block;
  font-size: 15.5px;
  font-weight: 800;
  margin-bottom: 6px;
}

.page-products .pp-next__text {
  display: block;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(250, 246, 239, .76);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-products .pp-hero {
    padding-top: 32px;
  }

  .page-products .pp-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 44px;
    align-items: end;
  }

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

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

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

  .page-products .pp-req {
    grid-template-columns: 18px 108px 1fr;
    align-items: start;
  }

  .page-products .pp-req__name {
    margin-bottom: 0;
    padding-top: 1px;
  }
}

@media (min-width: 1000px) {
  .page-products .pp-group__layout {
    grid-template-columns: 4fr 8fr;
    gap: 30px;
  }

  .page-products .pp-group__layout--flip {
    grid-template-columns: 8fr 4fr;
  }

  .page-products .pp-group__layout--flip .pp-group__fig {
    order: 0;
  }

  .page-products .pp-naming__layout {
    grid-template-columns: 6fr 6fr;
    gap: 46px;
  }

  .page-products .pp-install__layout {
    grid-template-columns: 7fr 5fr;
    gap: 34px;
  }

  .page-products .pp-path__layout {
    grid-template-columns: 4fr 8fr;
    gap: 46px;
  }

  .page-products .pp-combos__layout {
    grid-template-columns: 7fr 5fr;
    gap: 34px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-jump a,
  .page-products .pp-filter,
  .page-products .pp-next__item {
    transition: none;
  }

  .page-products .pp-jump a:hover,
  .page-products .pp-next__item:hover {
    transform: none;
  }
}