.page-products{
  --pp-pad: clamp(16px, 2.6vw, 28px);
  --pp-gap: clamp(16px, 2.4vw, 26px);
  --pp-node-bg: rgba(13, 42, 58, .92);
  background:
    radial-gradient(1100px 480px at 80% -6%, rgba(49, 242, 200, .10), transparent 62%),
    radial-gradient(760px 420px at 4% 12%, rgba(255, 138, 61, .10), transparent 66%),
    linear-gradient(180deg, var(--night) 0%, #061520 100%);
  color: var(--paper);
  font-family: var(--font-sans);
  padding-bottom: clamp(48px, 7vw, 96px);
  overflow-x: clip;
}

.page-products .tool-crumb{
  padding-top: clamp(14px, 2vw, 22px);
}

/* ---------- 首屏 ---------- */
.page-products .tool-hero{
  padding-block: clamp(18px, 3vw, 30px) clamp(32px, 5vw, 58px);
}

.page-products .tool-hero__grid{
  display: grid;
  gap: clamp(22px, 3.4vw, 36px);
}

.page-products .tool-hero__kicker{
  color: var(--neon);
  margin: 0 0 .6em;
}

.page-products .tool-hero__title{
  margin: 0 0 .5em;
  font-size: clamp(2.1rem, 6.4vw, 4.3rem);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -.035em;
  text-wrap: balance;
}

.page-products .tool-hero__lead{
  margin: 0 0 1.4em;
  max-width: 52ch;
  font-size: clamp(.98rem, 1.6vw, 1.1rem);
  line-height: 1.78;
  color: var(--paper-soft);
}

.page-products .tool-hero__acts{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-products .tool-hero__facts{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  margin: 0;
  border: 2px solid var(--line-strong);
  background: var(--line);
}

.page-products .tool-hero__fact{
  background: var(--cabin);
  padding: 10px 12px 12px;
}

.page-products .tool-hero__fact dt{
  font-size: .74rem;
  letter-spacing: .12em;
  color: var(--grid);
  margin-bottom: 4px;
}

.page-products .tool-hero__fact dd{
  margin: 0;
  font-size: clamp(1.2rem, 2.6vw, 1.5rem);
  color: var(--neon);
  font-weight: 700;
}

.page-products .tool-hero__media{
  border: 3px solid var(--line-strong);
  background: var(--cabin);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.page-products .tool-hero__media img{
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 双栏骨架 ---------- */
.page-products .tool-layout{
  display: block;
}

.page-products .tool-rail{
  border: 2px solid var(--line-strong);
  background: var(--cabin);
  box-shadow: var(--shadow);
  padding: 16px 14px 14px;
  margin-bottom: clamp(24px, 4vw, 36px);
}

.page-products .tool-rail__title{
  color: var(--neon);
  margin: 0 0 12px;
}

.page-products .tool-rail__list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-products .tool-rail__link{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding: 9px 12px;
  border: 2px solid var(--line-strong);
  color: var(--paper);
  text-decoration: none;
  font-size: .86rem;
  line-height: 1.2;
  white-space: nowrap;
  transition: border-color .16s ease, color .16s ease, background-color .16s ease;
}

.page-products .tool-rail__no{
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--neon);
  letter-spacing: .06em;
}

.page-products .tool-rail__link:hover,
.page-products .tool-rail__link:focus-visible{
  border-color: var(--neon);
  background: rgba(49, 242, 200, .12);
  color: var(--neon);
  outline: none;
}

.page-products .tool-rail__note{
  margin: 14px 0 0;
  font-size: .8rem;
  line-height: 1.6;
  color: var(--paper-dim);
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.page-products .tool-flow{
  display: flex;
  flex-direction: column;
  gap: var(--pp-gap);
  min-width: 0;
}

/* ---------- 节点面板 ---------- */
.page-products .tool-node{
  position: relative;
  border: 2px solid var(--line-strong);
  background: var(--pp-node-bg);
  box-shadow: var(--shadow);
  padding: clamp(18px, 3vw, 32px);
  min-width: 0;
}

.page-products .tool-node--paper{
  background: var(--paper);
  color: var(--ink);
  border-color: var(--ink);
  box-shadow: var(--shadow-paper);
}

.page-products .tool-node__head{
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 2px solid var(--line);
}

.page-products .tool-node--paper .tool-node__head{
  border-bottom-color: rgba(10, 20, 24, .22);
}

.page-products .node-no{
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 4.4vw, 2.7rem);
  font-weight: 700;
  line-height: .9;
  color: transparent;
  -webkit-text-stroke: 1.6px var(--neon);
  flex: 0 0 auto;
}

.page-products .tool-node--paper .node-no{
  -webkit-text-stroke-color: var(--ink);
}

.page-products .tool-node__titles{
  min-width: 0;
}

.page-products .node-kicker{
  margin: 0 0 6px;
  font-size: .74rem;
  letter-spacing: .16em;
  color: var(--neon);
  font-weight: 600;
}

.page-products .tool-node--paper .node-kicker{
  color: #8a4a12;
}

.page-products .tool-node h2{
  margin: 0;
  font-size: clamp(1.35rem, 3.2vw, 2.1rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.02em;
}

.page-products .tool-node__intro{
  margin: 0 0 20px;
  font-size: clamp(.95rem, 1.5vw, 1.02rem);
  line-height: 1.8;
  color: var(--paper-soft);
  max-width: 66ch;
}

.page-products .tool-node--paper .tool-node__intro{
  color: rgba(10, 20, 24, .82);
}

.page-products .tool-node p{
  font-size: .96rem;
  line-height: 1.8;
}

/* ---------- 四步技能树 ---------- */
.page-products .tree{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .tree__step{
  position: relative;
  border: 2px solid var(--line-strong);
  background: rgba(7, 27, 42, .72);
  padding: 14px 14px 16px;
  transition: border-color .16s ease, transform .16s ease, box-shadow .16s ease;
}

.page-products .tree__step:hover,
.page-products .tree__step:focus-within{
  border-color: var(--neon);
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 rgba(3, 12, 20, .9);
}

.page-products .tree__no{
  display: inline-block;
  font-size: .78rem;
  color: var(--ember);
  border: 1px solid var(--ember);
  padding: 1px 6px;
  margin-bottom: 8px;
}

.page-products .tree__title{
  margin: 0 0 6px;
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: .02em;
}

.page-products .tree__step p{
  margin: 0;
  font-size: .88rem;
  line-height: 1.72;
  color: var(--paper-soft);
}

/* ---------- 图文两列 ---------- */
.page-products .node-grid{
  display: grid;
  gap: clamp(16px, 2.6vw, 28px);
  margin-bottom: 20px;
}

.page-products .node-grid__text p{
  margin: 0 0 12px;
  color: var(--paper-soft);
}

.page-products .tool-node--paper .node-grid__text p{
  color: rgba(10, 20, 24, .84);
}

.page-products .node-grid__text p:last-child{
  margin-bottom: 0;
}

.page-products .node-figure{
  margin: 0;
  border: 2px solid var(--line-strong);
  background: var(--cabin);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.page-products .tool-node--paper .node-figure{
  border-color: var(--ink);
  box-shadow: var(--shadow-paper);
}

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

/* ---------- 侧栏排布示意 ---------- */
.page-products .rail-demo{
  border: 2px dashed var(--line-strong);
  padding: 14px;
  background: rgba(49, 242, 200, .05);
}

.page-products .rail-demo__cap{
  color: var(--grid);
  margin: 0 0 10px;
}

.page-products .rail-demo__list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-products .rail-demo__item{
  border: 2px solid var(--line);
  border-left-width: 6px;
  background: var(--night);
  padding: 9px 12px;
  font-size: .86rem;
  color: var(--paper-soft);
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

.page-products .rail-demo__item--foot{
  border-left-color: var(--league-foot);
}

.page-products .rail-demo__item--basket{
  border-left-color: var(--league-basket);
}

.page-products .rail-demo__item--cup{
  border-left-color: var(--league-cup);
}

.page-products .rail-demo__item--on{
  border-color: var(--ember);
  border-left-color: var(--ember);
  color: var(--paper);
  background: rgba(255, 138, 61, .12);
}

/* ---------- 数据表 ---------- */
.page-products .datatable-wrap{
  overflow-x: auto;
  border: 2px solid var(--line-strong);
  background: rgba(7, 27, 42, .8);
  -webkit-overflow-scrolling: touch;
}

.page-products .datatable{
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  font-size: .9rem;
}

.page-products .datatable__cap{
  caption-side: top;
  text-align: left;
  padding: 10px 12px;
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--grid);
  border-bottom: 1px solid var(--line);
}

.page-products .datatable thead th{
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--neon);
  background: rgba(49, 242, 200, .09);
  border-bottom: 2px solid var(--line-strong);
  padding: 10px 12px;
  text-align: left;
  white-space: nowrap;
}

.page-products .datatable tbody th,
.page-products .datatable tbody td{
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  color: var(--paper-soft);
}

.page-products .datatable tbody th{
  font-weight: 600;
  color: var(--paper);
  white-space: nowrap;
}

.page-products .datatable tbody td.data-num{
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--paper);
  white-space: nowrap;
}

.page-products .datatable tbody tr{
  transition: background-color .14s ease;
}

.page-products .datatable tbody tr:hover{
  background: rgba(49, 242, 200, .09);
}

.page-products .datatable tbody tr:hover th{
  color: var(--neon);
}

.page-products .node-quote{
  margin: 16px 0 0;
  padding: 12px 14px;
  border-left: 5px solid var(--ember);
  background: rgba(255, 138, 61, .08);
  color: var(--paper-soft);
  font-size: .92rem;
  line-height: 1.75;
}

/* ---------- 步骤条 ---------- */
.page-products .steps{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .steps__item{
  display: flex;
  align-items: flex-start;
  gap: 10px;
  border: 2px solid rgba(10, 20, 24, .3);
  background: rgba(243, 232, 212, .5);
  padding: 10px 12px;
  font-size: .9rem;
  line-height: 1.6;
  color: var(--ink);
}

.page-products .steps__no{
  flex: 0 0 auto;
  font-size: .74rem;
  font-weight: 700;
  color: var(--paper);
  background: var(--ink);
  padding: 1px 7px;
  line-height: 1.6;
}

.page-products .steps--row .steps__item{
  border-color: var(--line-strong);
  background: rgba(7, 27, 42, .7);
  color: var(--paper-soft);
}

.page-products .steps--row .steps__no{
  background: var(--neon);
  color: var(--ink);
}

/* ---------- 里程碑 ---------- */
.page-products .milestones{
  list-style: none;
  margin: 0;
  padding: 0 0 0 18px;
  border-left: 2px solid var(--ink);
  display: grid;
  gap: 16px;
}

.page-products .milestones__item{
  position: relative;
}

.page-products .milestones__item::before{
  content: "";
  position: absolute;
  left: -25px;
  top: 7px;
  width: 11px;
  height: 11px;
  background: var(--paper);
  border: 2px solid var(--ink);
}

.page-products .milestones__year{
  display: inline-block;
  font-weight: 700;
  font-size: .95rem;
  color: var(--ink);
  border-bottom: 3px solid var(--ember);
  margin-bottom: 4px;
}

.page-products .milestones__item p{
  margin: 0;
  font-size: .92rem;
  line-height: 1.75;
  color: rgba(10, 20, 24, .84);
}

/* ---------- 收尾 ---------- */
.page-products .tool-cta{
  border: 3px solid var(--neon);
  background: var(--cabin);
  box-shadow: var(--shadow);
  padding: clamp(20px, 3.4vw, 34px);
}

.page-products .tool-cta__title{
  margin: 0 0 12px;
  font-size: clamp(1.35rem, 3.4vw, 2rem);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.02em;
  max-width: 26ch;
}

.page-products .tool-cta__text{
  margin: 0 0 20px;
  max-width: 62ch;
  font-size: .96rem;
  line-height: 1.8;
  color: var(--paper-soft);
}

.page-products .tool-cta__acts{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.page-products .tool-cta__copy{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-products .tool-cta__copy .label{
  color: var(--grid);
}

/* ---------- 媒体查询：平板 ---------- */
@media (min-width: 720px){
  .page-products .tool-hero__facts{
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

  .page-products .node-grid{
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }

  .page-products .node-grid--flip .node-figure{
    order: -1;
  }

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

/* ---------- 媒体查询：桌面 ---------- */
@media (min-width: 960px){
  .page-products .tool-hero__grid{
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
    align-items: center;
  }

  .page-products .tool-layout{
    display: grid;
    grid-template-columns: 254px minmax(0, 1fr);
    gap: clamp(22px, 3.2vw, 42px);
    align-items: start;
  }

  .page-products .tool-rail{
    position: sticky;
    top: 20px;
    margin-bottom: 0;
  }

  .page-products .tool-rail__list{
    display: grid;
    gap: 6px;
    overflow: visible;
  }

  .page-products .tool-rail__link{
    justify-content: flex-start;
    width: 100%;
    white-space: normal;
    border-width: 0 0 0 3px;
    border-color: transparent;
    padding: 8px 10px;
  }

  .page-products .tool-rail__link:hover,
  .page-products .tool-rail__link:focus-visible{
    border-left-color: var(--neon);
    background: rgba(49, 242, 200, .10);
  }

  .page-products .tool-flow{
    position: relative;
    padding-left: 30px;
  }

  .page-products .tool-flow::before{
    content: "";
    position: absolute;
    left: 9px;
    top: 10px;
    bottom: 10px;
    width: 2px;
    background: linear-gradient(180deg, var(--neon), rgba(49, 242, 200, .12));
  }

  .page-products .tool-node::before{
    content: "";
    position: absolute;
    left: -27px;
    top: 30px;
    width: 12px;
    height: 12px;
    background: var(--night);
    border: 2px solid var(--neon);
  }

  .page-products .tool-cta{
    position: relative;
  }

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

  .page-products .tree__step::after{
    content: "→";
    position: absolute;
    right: -13px;
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--font-mono);
    color: var(--neon);
    font-size: .95rem;
    z-index: 1;
  }

  .page-products .tree__step:last-child::after{
    content: none;
  }

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

@media (prefers-reduced-motion: reduce){
  .page-products .tree__step,
  .page-products .tool-rail__link,
  .page-products .datatable tbody tr{
    transition: none;
  }

  .page-products .tree__step:hover,
  .page-products .tree__step:focus-within{
    transform: none;
  }
}
<<<END>>>