.page-products {
  position: relative;
  isolation: isolate;
  color: var(--ivory);
  font-family: var(--sans);
  padding-bottom: 3rem;
}

/* ---------- 面包屑 ---------- */
.page-products .crumbs {
  padding-top: 1.25rem;
}
.page-products .crumbs ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--stone);
}
.page-products .crumbs li + li::before {
  content: "/";
  margin: 0 .5rem;
  color: var(--rock);
}
.page-products .crumbs a {
  color: var(--teal);
  text-decoration: none;
}
.page-products .crumbs a:hover {
  text-decoration: underline;
}
.page-products .crumbs [aria-current="page"] {
  color: var(--ivory);
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  position: relative;
  display: grid;
  gap: 1.75rem;
  padding-top: 1.5rem;
  padding-bottom: 2.5rem;
}
.page-products .prod-hero::before {
  content: "";
  position: absolute;
  top: -1.5rem;
  right: -6%;
  width: 62%;
  height: 78%;
  background: linear-gradient(142deg, rgba(18, 58, 49, .95) 0%, rgba(14, 42, 36, 0) 72%);
  clip-path: polygon(0 0, 100% 0, 100% 74%, 22% 100%);
  z-index: -1;
  pointer-events: none;
}
.page-products .prod-hero__copy {
  display: grid;
  gap: .85rem;
  align-content: start;
}
.page-products .prod-hero__copy h1 {
  margin: 0;
  font-size: clamp(1.9rem, 5.4vw, 3.1rem);
  line-height: 1.22;
  font-weight: 700;
  letter-spacing: -.02em;
  font-stretch: 96%;
  color: var(--ivory);
}
.page-products .prod-hero__copy .lede {
  margin: 0;
  color: var(--ivory);
  opacity: .86;
  max-width: 46ch;
}
.page-products .prod-hero__facts {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .7rem;
  margin-top: .35rem;
}
.page-products .prod-hero__note {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--stone);
}
.page-products .prod-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: .5rem;
}
.page-products .prod-hero__visual {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--moss);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.page-products .prod-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}
.page-products .prod-hero__cap {
  padding: .7rem .9rem;
  border-top: 1px solid var(--line-soft);
  background: var(--coal);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--stone);
}

/* ---------- 章节导航条 ---------- */
.page-products .prod-chapters {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem .55rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.page-products .prod-chapters a {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--stone);
  text-decoration: none;
  padding: .35rem .6rem;
  border: 1px solid var(--line-soft);
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}
.page-products .prod-chapters a:hover,
.page-products .prod-chapters a[aria-current="true"] {
  color: var(--ivory);
  border-color: var(--teal);
}

/* ---------- 通用区块 ---------- */
.page-products .prod-section {
  padding-top: 3rem;
  padding-bottom: 1rem;
}
.page-products .prod-section--sink {
  background: var(--moss);
  margin-top: 3rem;
  padding-bottom: 3rem;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.page-products .section__head {
  display: grid;
  gap: .7rem;
  max-width: 62ch;
}
.page-products .section__head .lede {
  margin: 0;
  color: var(--ivory);
  opacity: .82;
}
.page-products .section__title {
  margin: 0;
  font-size: clamp(1.4rem, 3.4vw, 2.05rem);
  line-height: 1.3;
  letter-spacing: -.012em;
  color: var(--ivory);
}
.page-products .prod-afterword {
  margin: 2rem 0 0;
  font-size: .95rem;
  line-height: 1.75;
  color: var(--stone);
  max-width: 60ch;
}
.page-products .prod-afterword a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 138, 114, .5);
}
.page-products .prod-afterword a:hover {
  border-bottom-color: var(--teal);
}

/* ---------- 三点概览 ---------- */
.page-products .prod-points {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.page-products .prod-points li {
  background: var(--venue);
  padding: 1.4rem 1.2rem 1.6rem;
  display: grid;
  gap: .45rem;
  align-content: start;
}
.page-products .pp-idx {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--warn);
}
.page-products .prod-points h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ivory);
}
.page-products .prod-points p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--ivory);
  opacity: .78;
}

/* ---------- 四个功能分区 ---------- */
.page-products .panel-block {
  display: grid;
  gap: 1.4rem;
  margin-top: 2.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-soft);
}
.page-products .panel-block__media {
  margin: 0;
  border: 1px solid var(--line-soft);
  background: var(--coal);
  overflow: hidden;
}
.page-products .panel-block__media img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 320ms var(--ease), filter 320ms var(--ease);
}
.page-products .panel-block__media:hover img {
  transform: scale(1.012);
  filter: brightness(1.08);
}
.page-products .panel-block__body {
  display: grid;
  gap: .7rem;
  align-content: start;
}
.page-products .panel-block__kicker {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--teal);
}
.page-products .panel-block__title {
  margin: 0;
  font-size: clamp(1.15rem, 2.6vw, 1.45rem);
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--ivory);
}
.page-products .panel-block__lead {
  margin: 0;
  font-size: .95rem;
  line-height: 1.78;
  color: var(--ivory);
  opacity: .8;
}

/* ---------- 编号步骤 ---------- */
.page-products .steps {
  list-style: none;
  margin: .45rem 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.page-products .steps li {
  display: grid;
  grid-template-columns: 1.4rem 1fr;
  gap: .6rem;
  align-items: baseline;
  padding: .6rem 0;
  border-top: 1px solid var(--line-soft);
  font-size: .92rem;
  line-height: 1.72;
  color: var(--ivory);
  opacity: .88;
}
.page-products .steps li:first-child {
  border-top: 0;
  padding-top: .2rem;
}
.page-products .steps .num {
  font-family: var(--mono);
  font-size: .85rem;
  letter-spacing: -.01em;
  color: var(--warn);
}
.page-products .steps--big li {
  grid-template-columns: 1.7rem 1fr;
  font-size: .95rem;
}
.page-products .steps--big .num {
  font-size: 1rem;
}

/* ---------- 版本记录 ---------- */
.page-products .prod-version-figure {
  margin: 2rem 0 0;
  border: 1px solid var(--line-soft);
  background: var(--moss);
  overflow: hidden;
}
.page-products .prod-version-figure img {
  display: block;
  width: 100%;
  height: auto;
}
.page-products .prod-timeline {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.page-products .prod-timeline li {
  background: var(--venue);
  padding: 1.15rem 1.1rem 1.5rem;
  display: grid;
  gap: .45rem;
  align-content: start;
  border-top: 3px solid transparent;
}
.page-products .prod-timeline li.is-latest {
  background: var(--moss);
  border-top-color: var(--teal);
}
.page-products .prod-timeline .num {
  font-family: var(--mono);
  font-size: 1.4rem;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--warn);
}
.page-products .prod-timeline h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ivory);
}
.page-products .prod-timeline p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.72;
  color: var(--ivory);
  opacity: .76;
}

/* ---------- 上手路径 ---------- */
.page-products .prod-paths {
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
}
.page-products .path-card {
  background: var(--venue);
  border-top: 3px solid var(--teal);
  border-left: 1px solid var(--line-soft);
  border-right: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  padding: 1.35rem 1.2rem 1.6rem;
  display: grid;
  gap: .6rem;
  align-content: start;
}
.page-products .path-card--alt {
  border-top-color: var(--warn);
}
.page-products .path-card__tag {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--stone);
}
.page-products .path-card h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--ivory);
}
.page-products .path-card > p:not(.path-card__tag) {
  margin: 0;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--ivory);
  opacity: .78;
}

/* ---------- 适用场景 ---------- */
.page-products .prod-cases {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}
.page-products .prod-cases li {
  display: grid;
  gap: .55rem;
  align-content: start;
  padding-left: 1.1rem;
  border-left: 2px solid var(--rock);
}
.page-products .prod-cases li:nth-child(1) {
  border-left-color: var(--warn);
}
.page-products .prod-cases li:nth-child(2) {
  border-left-color: var(--teal);
}
.page-products .prod-cases li:nth-child(3) {
  border-left-color: var(--red);
}
.page-products .prod-cases .tag {
  justify-self: start;
}
.page-products .prod-cases h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--ivory);
}
.page-products .prod-cases p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.76;
  color: var(--ivory);
  opacity: .78;
}

/* ---------- 运行环境与设置 ---------- */
.page-products .prod-specs {
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.page-products .prod-specs__row {
  border-top: 1px solid var(--line-soft);
  padding: .85rem 0 1rem;
  display: grid;
  gap: .3rem;
  align-content: start;
}
.page-products .prod-specs__row dt {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--teal);
}
.page-products .prod-specs__row dd {
  margin: 0;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--ivory);
  opacity: .8;
}
.page-products .prod-specs__row dd a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 138, 114, .5);
}
.page-products .prod-specs__row dd a:hover {
  border-bottom-color: var(--teal);
}

/* ---------- 下载前三件事 ---------- */
.page-products .prod-fixlist {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  counter-reset: none;
}
.page-products .prod-fixlist li {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: .9rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--line-soft);
  align-items: start;
}
.page-products .prod-fixlist li:last-child {
  border-bottom: 1px solid var(--line-soft);
}
.page-products .prod-fixlist .num {
  font-family: var(--mono);
  font-size: 1.5rem;
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--warn);
}
.page-products .prod-fixlist h3 {
  margin: 0 0 .35rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ivory);
}
.page-products .prod-fixlist p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.76;
  color: var(--ivory);
  opacity: .78;
}

/* ---------- 回到页首 ---------- */
.page-products .prod-toplink {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line-soft);
}
.page-products .prod-toplink .to-top {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--stone);
  text-decoration: none;
  padding: .5rem .85rem;
  border: 1px solid var(--line-soft);
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}
.page-products .prod-toplink .to-top:hover {
  color: var(--ivory);
  border-color: var(--teal);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-products .prod-points {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-products .prod-timeline {
    grid-auto-flow: column;
    grid-auto-columns: minmax(200px, 1fr);
    overflow-x: auto;
    scroll-snap-type: x proximity;
  }
  .page-products .prod-timeline li {
    scroll-snap-align: start;
  }
  .page-products .prod-cases {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
  .page-products .prod-specs {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 3rem;
  }
  .page-products .prod-paths {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
}

@media (min-width: 900px) {
  .page-products .prod-hero {
    grid-template-columns: 1.02fr .98fr;
    gap: 3rem;
    align-items: center;
    padding-top: 2.5rem;
    padding-bottom: 3.5rem;
  }
  .page-products .prod-section {
    padding-top: 4rem;
  }
  .page-products .prod-section--sink {
    margin-top: 4rem;
    padding-bottom: 4rem;
  }
}

@media (min-width: 1040px) {
  .page-products .panel-block {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
    margin-top: 3.5rem;
    padding-top: 2rem;
  }
  .page-products .panel-block--flip .panel-block__media {
    order: 2;
  }
  .page-products .prod-fixlist li {
    grid-template-columns: 3.2rem 1fr;
    gap: 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .panel-block__media img {
    transition: none;
  }
  .page-products .panel-block__media:hover img {
    transform: none;
  }
}