.page-products {
  --prod-line: rgba(16, 27, 51, .14);
  --prod-gap: clamp(1rem, 3vw, 1.75rem);
  --path-color: var(--orange);
  padding-bottom: clamp(3rem, 8vw, 5rem);
}

.page-products .prod-crumbs {
  padding-top: clamp(1rem, 3vw, 1.75rem);
}

.page-products .prod-crumbs .crumbs {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--steel);
}

.page-products .tree,
.page-products .path-sec,
.page-products .prod-compare,
.page-products .prod-deliver,
.page-products .prod-choose {
  scroll-margin-top: calc(var(--bar-h) + 1rem);
}

/* ---------- 首屏 ---------- */
.prod-hero {
  position: relative;
  overflow: hidden;
  margin-bottom: clamp(2.5rem, 7vw, 4.5rem);
  padding: clamp(2.25rem, 6vw, 4.5rem) 0 clamp(2.5rem, 7vw, 4rem);
  color: var(--paper);
  background:
    radial-gradient(120% 90% at 92% 6%, rgba(232, 122, 46, .30), transparent 55%),
    radial-gradient(100% 90% at 4% 100%, rgba(45, 79, 108, .62), transparent 62%),
    linear-gradient(158deg, var(--indigo) 0%, var(--indigo-2) 58%, #24394f 100%);
}

.prod-hero::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 8px;
  background-image: repeating-linear-gradient(90deg, rgba(244, 239, 230, .42) 0 1px, transparent 1px 26px);
  opacity: .5;
  pointer-events: none;
}

.prod-hero::after {
  content: "";
  position: absolute;
  inset: 16px;
  border: 1px solid rgba(244, 239, 230, .14);
  pointer-events: none;
}

.prod-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 5vw, 3rem);
}

.prod-hero__intro {
  max-width: 44rem;
}

.prod-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--orange-soft);
}

.prod-hero__kicker::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--orange);
}

.prod-hero h1 {
  margin: .9rem 0 1.1rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.85rem, 4.6vw, 3.2rem);
  line-height: 1.2;
  letter-spacing: .01em;
  color: var(--paper);
}

.prod-hero .lede {
  max-width: 46ch;
  margin: 0;
  font-size: clamp(.98rem, 1.6vw, 1.05rem);
  line-height: 1.88;
  color: rgba(244, 239, 230, .82);
}

.prod-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.85rem;
}

.prod-hero__actions .btn {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
}

.prod-hero__actions .btn--ghost {
  color: var(--paper);
  border: 1px solid rgba(244, 239, 230, .38);
  background: rgba(244, 239, 230, .06);
  transition: background-color .18s var(--ease);
}

.prod-hero__actions .btn--ghost:hover,
.prod-hero__actions .btn--ghost:focus-visible {
  background: rgba(244, 239, 230, .16);
}

.prod-hero__paths {
  align-self: stretch;
  padding: clamp(1.1rem, 3vw, 1.5rem);
  border: 1px solid rgba(244, 239, 230, .22);
  background: rgba(10, 16, 32, .3);
  backdrop-filter: blur(6px);
}

.prod-hero__paths-title {
  margin: 0 0 .9rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .18em;
  color: var(--orange-soft);
}

.path-index {
  list-style: none;
  margin: 0;
  padding: 0;
}

.path-index li + li a {
  border-top: 1px solid rgba(244, 239, 230, .16);
}

.path-index a {
  display: grid;
  grid-template-columns: 2.25rem minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: .5rem;
  padding: .8rem .4rem .8rem .25rem;
  color: var(--paper);
  text-decoration: none;
  transition: background-color .18s var(--ease), padding-left .18s var(--ease);
}

.path-index a:hover,
.path-index a:focus-visible {
  background: rgba(244, 239, 230, .09);
  padding-left: .7rem;
}

.path-index .num {
  grid-row: 1 / span 2;
  align-self: center;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--orange-soft);
}

.path-index strong {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
}

.path-index em {
  font-style: normal;
  font-size: .78rem;
  line-height: 1.5;
  color: rgba(244, 239, 230, .62);
}

/* ---------- 章节标题 ---------- */
.prod-sec-head {
  max-width: 64ch;
  margin-bottom: clamp(1.5rem, 4vw, 2.4rem);
}

.prod-sec-head .num {
  display: inline-block;
  margin-bottom: .85rem;
  padding-bottom: .25rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .18em;
  color: var(--brick);
  border-bottom: 1px solid currentColor;
}

.prod-sec-head h2 {
  margin: 0 0 .75rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 3.4vw, 2.2rem);
  line-height: 1.28;
  letter-spacing: .01em;
  color: var(--ink);
}

.prod-sec-head p {
  margin: 0;
  font-size: .97rem;
  line-height: 1.88;
  color: var(--mist);
}

/* ---------- 技能树 ---------- */
.prod-tree {
  padding: 0 0 clamp(2.5rem, 7vw, 4rem);
}

.tree__root {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 0 .9rem;
  margin-bottom: 1.1rem;
  padding: 1rem 1.15rem;
  color: var(--paper);
  background: linear-gradient(100deg, var(--indigo) 0%, var(--indigo-2) 100%);
  border-left: 3px solid var(--orange);
}

.tree__root-mark {
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--indigo);
  background: var(--orange);
}

.tree__root p {
  margin: 0;
  line-height: 1.45;
}

.tree__root strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 1rem;
  letter-spacing: .01em;
}

.tree__root-sub {
  display: block;
  font-size: .76rem;
  color: rgba(244, 239, 230, .62);
}

.tree__root-link {
  grid-column: 2;
  justify-self: start;
  margin-top: .45rem;
  padding-bottom: 2px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--orange-soft);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.tree__list {
  position: relative;
  display: grid;
  gap: .85rem;
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.6rem;
}

.tree__list::before {
  content: "";
  position: absolute;
  left: .5rem;
  top: 0;
  bottom: 2.2rem;
  width: 1px;
  background: linear-gradient(180deg, var(--orange) 0%, rgba(232, 122, 46, .1) 100%);
}

.tree__node {
  position: relative;
  padding: .95rem 1.05rem;
  background: var(--paper);
  border: 1px solid var(--prod-line);
  border-left: 3px solid rgba(232, 122, 46, .5);
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.tree__node::before {
  content: "";
  position: absolute;
  left: -1.1rem;
  top: 1.7rem;
  width: 1.1rem;
  height: 1px;
  background: rgba(232, 122, 46, .5);
}

.tree__node:hover,
.tree__node:focus-within {
  border-left-color: var(--orange);
  background: rgba(255, 255, 255, .6);
}

.tree__num {
  display: block;
  margin-bottom: .35rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--orange);
}

.tree__name {
  margin: 0 0 .4rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: .01em;
  color: var(--ink);
}

.tree__desc {
  margin: 0 0 .65rem;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--mist);
}

.tree__tags {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.tree__tags li {
  padding: .2rem .5rem;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .08em;
  color: var(--mist);
  border: 1px solid rgba(16, 27, 51, .16);
}

/* ---------- 路径 ---------- */
.path-sec {
  padding: clamp(2.25rem, 6vw, 3.75rem) 0;
  border-top: 1px solid var(--prod-line);
}

.path-sec--new {
  --path-color: var(--orange);
}

.path-sec--family {
  --path-color: var(--brick);
  background: rgba(216, 203, 184, .24);
}

.path-sec--archive {
  --path-color: var(--mist);
}

.path-sec__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.path-sec__tag {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  margin: 0 0 .75rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--path-color);
}

.path-sec__tag::before {
  content: "";
  width: 26px;
  height: 3px;
  background: var(--path-color);
}

.path-sec__title {
  margin: 0 0 .7rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 3.2vw, 2rem);
  line-height: 1.3;
  letter-spacing: .01em;
  color: var(--ink);
}

.path-sec__lead {
  max-width: 48ch;
  margin: 0 0 1.5rem;
  font-size: .96rem;
  line-height: 1.88;
  color: var(--mist);
}

.steps {
  display: grid;
  gap: .9rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.steps li {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  column-gap: 1rem;
  row-gap: .1rem;
  align-items: start;
}

.steps__n {
  grid-column: 1;
  grid-row: 1 / span 2;
  width: 2.1rem;
  height: 2.1rem;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--paper);
  background: var(--path-color);
}

.steps h3 {
  grid-column: 2;
  grid-row: 1;
  margin: .15rem 0 .25rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .98rem;
  line-height: 1.5;
  color: var(--ink);
}

.steps p {
  grid-column: 2;
  grid-row: 2;
  margin: 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--mist);
}

.steps p a {
  color: var(--path-color);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.path-sec__media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--prod-line);
  background: var(--sand);
}

.path-sec__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.path-sec__media .media__cap {
  padding: .6rem .8rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .04em;
  color: var(--steel);
  background: var(--paper);
  border-top: 1px solid var(--prod-line);
}

/* ---------- 六维比较 ---------- */
.prod-compare {
  padding: clamp(2.5rem, 7vw, 4rem) 0;
  background: linear-gradient(180deg, rgba(216, 203, 184, .34), rgba(244, 239, 230, 0) 72%);
}

.compare {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.compare__bars ul {
  display: grid;
  gap: 1.15rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.compare__bars li {
  display: grid;
  grid-template-columns: 5rem minmax(0, 1fr);
  column-gap: .9rem;
  row-gap: .28rem;
  align-items: center;
}

.compare__key {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .9rem;
  color: var(--ink);
}

.compare__track {
  position: relative;
  height: 7px;
  background: rgba(16, 27, 51, .1);
  overflow: hidden;
}

.compare__fill {
  position: absolute;
  inset: 0 auto 0 0;
  display: block;
  background: linear-gradient(90deg, var(--orange), var(--brick));
}

.compare__bars li:nth-child(1) .compare__fill { width: 86%; }
.compare__bars li:nth-child(2) .compare__fill { width: 74%; }
.compare__bars li:nth-child(3) .compare__fill { width: 63%; }
.compare__bars li:nth-child(4) .compare__fill { width: 81%; }
.compare__bars li:nth-child(5) .compare__fill { width: 69%; }
.compare__bars li:nth-child(6) .compare__fill { width: 90%; }

.compare__hint {
  grid-column: 1 / -1;
  font-size: .8rem;
  line-height: 1.65;
  color: var(--steel);
}

.compare__note {
  margin: 1.4rem 0 0;
  padding-top: 1rem;
  font-size: .85rem;
  line-height: 1.75;
  color: var(--mist);
  border-top: 1px solid var(--prod-line);
}

.compare__note a {
  color: var(--brick);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.compare__media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--prod-line);
  background: var(--paper);
}

.compare__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.compare__media .media__cap {
  padding: .6rem .8rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .04em;
  color: var(--steel);
  border-top: 1px solid var(--prod-line);
}

/* ---------- 交付节奏 ---------- */
.prod-deliver {
  padding: clamp(2.5rem, 7vw, 4rem) 0;
  border-top: 1px solid var(--prod-line);
}

.deliver {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.deliver__card {
  padding: clamp(1.15rem, 3vw, 1.75rem);
  background: var(--paper);
  border: 1px solid var(--prod-line);
}

.deliver__card--brief {
  box-shadow: inset 4px 0 0 var(--brick);
}

.deliver__card--ticket {
  box-shadow: inset 4px 0 0 var(--orange);
}

.deliver__card h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.5;
  color: var(--ink);
}

.brief {
  display: grid;
  gap: .85rem;
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
}

.brief li {
  display: grid;
  gap: .12rem;
  padding-left: .9rem;
  border-left: 1px solid var(--prod-line);
}

.brief__k {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--brick);
}

.brief__v {
  font-size: .9rem;
  line-height: 1.78;
  color: var(--mist);
}

.flow {
  display: grid;
  gap: .7rem;
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
}

.flow li {
  display: grid;
  grid-template-columns: 1.7rem minmax(0, 1fr);
  column-gap: .7rem;
  align-items: start;
}

.flow__n {
  width: 1.7rem;
  height: 1.7rem;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--paper);
  background: var(--indigo);
}

.flow p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--mist);
}

.deliver__note {
  margin: 1.1rem 0 0;
  font-size: .8rem;
  line-height: 1.7;
  color: var(--steel);
}

.deliver__note a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.prod-deliver__media {
  margin: 1.5rem 0 0;
  overflow: hidden;
  border: 1px solid var(--prod-line);
  background: var(--sand);
}

.prod-deliver__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.prod-deliver__media .media__cap {
  padding: .6rem .8rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .04em;
  color: var(--steel);
  background: var(--paper);
  border-top: 1px solid var(--prod-line);
}

/* ---------- 选择起点 ---------- */
.prod-choose {
  padding: clamp(2.5rem, 7vw, 4rem) 0 0;
}

.choose {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.choose__card {
  --accent: var(--orange);
  display: flex;
  flex-direction: column;
  padding: 1.3rem 1.2rem 1.35rem;
  color: var(--paper);
  background: linear-gradient(165deg, var(--indigo) 0%, var(--indigo-2) 100%);
  border-top: 3px solid var(--accent);
}

.choose__card:nth-child(2) {
  --accent: var(--brick);
}

.choose__card:nth-child(3) {
  --accent: var(--orange-soft);
}

.choose__role {
  margin: 0 0 .55rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .14em;
  color: var(--accent);
}

.choose__card h3 {
  margin: 0 0 .6rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--paper);
}

.choose__card p {
  margin: 0 0 1.1rem;
  font-size: .89rem;
  line-height: 1.78;
  color: rgba(244, 239, 230, .74);
}

.choose__link {
  align-self: flex-start;
  margin-top: auto;
  padding-bottom: 3px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.choose__link:hover,
.choose__link:focus-visible {
  color: var(--paper);
}

/* ---------- 响应式 ---------- */
@media (min-width: 780px) {
  .choose {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

@media (min-width: 860px) {
  .tree__node {
    display: grid;
    grid-template-columns: 3.5rem minmax(0, 1fr) 15rem;
    column-gap: 1.5rem;
    align-items: start;
    padding: 1.1rem 1.3rem;
  }

  .tree__num {
    grid-column: 1;
    grid-row: 1 / span 2;
    margin: .2rem 0 0;
  }

  .tree__name {
    grid-column: 2;
    grid-row: 1;
    margin: 0 0 .35rem;
  }

  .tree__desc {
    grid-column: 2;
    grid-row: 2;
    margin-bottom: 0;
  }

  .tree__tags {
    grid-column: 3;
    grid-row: 1 / span 2;
    justify-content: flex-end;
    align-self: start;
  }

  .deliver {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
  }
}

@media (min-width: 900px) {
  .prod-hero__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .8fr);
    align-items: end;
  }

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

  .path-sec--family .path-sec__grid {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  }

  .path-sec--family .path-sec__media {
    order: -1;
  }

  .compare {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .btn,
  .page-products .path-index a,
  .page-products .tree__node {
    transition: none;
  }
}
<<<END>>>