.page-products {
  --pd-gap: clamp(1.3rem, 3vw, 2.6rem);
  --pd-rail: 272px;
  --pd-sticky: 7rem;
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-products .pd-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background-color: var(--void);
  background-image:
    linear-gradient(155deg, rgba(201, 162, 39, .13) 0%, rgba(10, 18, 48, 0) 48%),
    linear-gradient(20deg, rgba(139, 127, 212, .12) 0%, rgba(10, 18, 48, 0) 40%);
}

.page-products .pd-hero::before {
  content: "";
  position: absolute;
  top: -24%;
  right: -18%;
  z-index: 0;
  width: min(660px, 88vw);
  height: min(660px, 88vw);
  background: linear-gradient(205deg, rgba(56, 225, 198, .18), rgba(17, 27, 62, .92) 64%);
  clip-path: polygon(32% 0, 100% 0, 100% 68%, 68% 100%, 0 100%, 0 32%);
  opacity: .45;
  pointer-events: none;
}

.page-products .pd-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-products .pd-crumb {
  padding-top: clamp(1rem, 3vw, 1.6rem);
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .04em;
}

.page-products .pd-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-block: clamp(1.2rem, 3.6vw, 2.2rem) clamp(1.9rem, 5vw, 3.8rem);
}

.page-products .pd-hero-kicker {
  margin: 0 0 .7rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-products .pd-hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(1.8rem, 5.2vw, 3.1rem);
  line-height: 1.2;
  letter-spacing: .01em;
  color: var(--paper);
  text-wrap: balance;
}

.page-products .pd-hero .lede {
  margin: 0 0 .9rem;
  color: rgba(244, 240, 230, .84);
  font-size: clamp(.95rem, 1.6vw, 1.04rem);
  line-height: 1.85;
}

.page-products .pd-hero-note {
  margin: 0 0 1.4rem;
  color: var(--mist);
  font-size: .87rem;
  line-height: 1.75;
}

.page-products .pd-domain {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  margin: 0;
  padding-top: 1rem;
  border-top: 1px dashed var(--line);
}

.page-products .pd-domain-key {
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-products .pd-domain code {
  font-family: var(--font-mono);
  font-size: .86rem;
  color: var(--neon);
  letter-spacing: .02em;
  word-break: break-all;
}

.page-products .pd-copy {
  margin-left: auto;
  padding: .28rem .6rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--mist);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 2px;
  cursor: pointer;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}

.page-products .pd-copy:hover,
.page-products .pd-copy:focus-visible {
  color: var(--neon);
  border-color: var(--neon);
  background-color: rgba(56, 225, 198, .08);
}

.page-products .pd-copy.is-copied {
  color: var(--gold);
  border-color: var(--gold);
}

.page-products .pd-hero-figure {
  margin: 0;
}

.page-products .pd-hero-figure .frame-caption {
  margin-top: .6rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--mist);
}

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

/* ---------- 双栏主体 ---------- */
.page-products .pd-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 2.8rem);
  padding-block: clamp(1.8rem, 5vw, 3.4rem) clamp(2.4rem, 7vw, 5rem);
}

.page-products .pd-rail {
  min-width: 0;
}

.page-products .pd-flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4.4vw, 2.8rem);
  min-width: 0;
}

/* ---------- 左侧索引树 ---------- */
.page-products .pd-tree {
  position: relative;
  padding: 1rem 1.05rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--card);
  background-image: linear-gradient(180deg, rgba(201, 162, 39, .07), rgba(17, 27, 62, 0) 42%);
  box-shadow: var(--shadow-1);
}

.page-products .pd-tree-head {
  display: flex;
  align-items: center;
  gap: .55rem;
  margin: 0 0 .85rem;
  padding-bottom: .7rem;
  border-bottom: 1px dashed var(--line);
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--paper);
}

.page-products .pd-tree-mono {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .18em;
  color: var(--gold);
}

.page-products .pd-tree-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .pd-tree-list > li {
  border-bottom: 1px solid rgba(27, 42, 90, .55);
}

.page-products .pd-tree-list > li:last-child {
  border-bottom: 0;
}

.page-products .pd-tree-top {
  display: flex;
  align-items: baseline;
  gap: .55rem;
  padding: .55rem .5rem .55rem .55rem;
  border-left: 2px solid transparent;
  font-family: var(--font-sans);
  font-size: .9rem;
  font-weight: 600;
  color: var(--paper);
  text-decoration: none;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}

.page-products .pd-tree-top:hover,
.page-products .pd-tree-top:focus-visible {
  color: var(--neon);
  border-left-color: var(--neon);
  background-color: rgba(56, 225, 198, .08);
}

.page-products .pd-tree-top[aria-current="true"] {
  color: var(--neon);
  border-left-color: var(--gold);
  background-color: rgba(201, 162, 39, .1);
}

.page-products .pd-tree-num {
  flex: none;
  min-width: 1.5rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-products .pd-tree summary {
  list-style: none;
  cursor: pointer;
}

.page-products .pd-tree summary::-webkit-details-marker {
  display: none;
}

.page-products .pd-tree-sum {
  border-left-color: transparent;
}

.page-products .pd-tree-sum::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--mist);
}

.page-products .pd-tree details[open] > .pd-tree-sum::after {
  content: "–";
  color: var(--neon);
}

.page-products .pd-tree-sub {
  list-style: none;
  margin: 0 0 .6rem;
  padding: 0 0 0 .2rem;
  border-left: 1px solid var(--line);
}

.page-products .pd-tree-sub .index-link {
  display: block;
  margin-left: -1px;
  padding: .34rem .5rem .34rem .8rem;
  border-left: 2px solid transparent;
  font-size: .84rem;
  color: var(--mist);
  text-decoration: none;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}

.page-products .pd-tree-sub .index-link:hover,
.page-products .pd-tree-sub .index-link:focus-visible {
  color: var(--neon);
  border-left-color: var(--neon);
  background-color: rgba(56, 225, 198, .07);
}

.page-products .pd-tree-sub .index-link[aria-current="true"] {
  color: var(--neon);
  border-left-color: var(--gold);
  background-color: rgba(201, 162, 39, .09);
}

/* ---------- 内容卡片区块 ---------- */
.page-products .pd-block {
  position: relative;
  min-width: 0;
  padding: clamp(1.2rem, 3.4vw, 2.1rem);
  border: 1px solid var(--line);
  border-top: 2px solid var(--gold);
  border-radius: var(--radius);
  background-color: rgba(17, 27, 62, .88);
  background-image: linear-gradient(180deg, rgba(10, 18, 48, .5), rgba(17, 27, 62, .2) 38%);
  box-shadow: var(--shadow-1);
  scroll-margin-top: var(--pd-sticky);
}

.page-products .pd-block-head {
  display: flex;
  align-items: flex-start;
  gap: .9rem;
  margin-bottom: 1.2rem;
  padding-bottom: .95rem;
  border-bottom: 1px dashed var(--line);
}

.page-products .pd-block-num {
  flex: none;
  padding-top: .1rem;
  font-family: var(--font-mono);
  font-size: clamp(1.45rem, 4vw, 2rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--gold);
}

.page-products .pd-block-head h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.18rem, 3vw, 1.58rem);
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper);
}

.page-products .pd-block-kicker {
  margin: .32rem 0 0;
  font-size: .82rem;
  letter-spacing: .02em;
  color: var(--mist);
}

.page-products .pd-text {
  margin: 0 0 1.2rem;
  font-size: .93rem;
  line-height: 1.85;
  color: rgba(244, 240, 230, .82);
}

.page-products .pd-text--tight {
  margin-top: 1.1rem;
  margin-bottom: 1.1rem;
}

/* ---------- 层级步骤 ---------- */
.page-products .pd-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .8rem;
}

.page-products .pd-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .85rem;
  padding: .95rem 1rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
  background-color: rgba(10, 18, 48, .68);
  transition: transform .18s ease, box-shadow .18s ease, border-left-color .18s ease;
}

.page-products .pd-step:hover,
.page-products .pd-step:focus-within {
  transform: translateY(-3px);
  border-left-color: var(--neon);
  box-shadow: var(--shadow-2);
}

.page-products .pd-step-num {
  align-self: start;
  padding: .22rem .44rem;
  border-radius: 2px;
  background-color: var(--gold);
  color: var(--void);
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .1em;
}

.page-products .pd-step h3 {
  margin: 0 0 .3rem;
  font-family: var(--font-sans);
  font-size: .96rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper);
}

.page-products .pd-step p {
  margin: 0;
  font-size: .88rem;
  line-height: 1.78;
  color: rgba(244, 240, 230, .76);
}

/* ---------- 条目列表 ---------- */
.page-products .pd-list {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .7rem;
}

.page-products .pd-list li {
  padding: .82rem .95rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: rgba(10, 18, 48, .55);
  font-size: .88rem;
  line-height: 1.78;
  color: rgba(244, 240, 230, .78);
}

.page-products .pd-list strong {
  display: block;
  margin-bottom: .22rem;
  font-family: var(--font-sans);
  font-size: .93rem;
  font-weight: 700;
  color: var(--paper);
}

/* ---------- 四类主题 ---------- */
.page-products .pd-topic-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .95rem;
}

.page-products .pd-topic {
  padding: 1.05rem 1.1rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: rgba(10, 18, 48, .62);
  scroll-margin-top: var(--pd-sticky);
  transition: transform .18s ease, box-shadow .18s ease;
}

.page-products .pd-topic:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2);
}

.page-products .pd-topic h3 {
  margin: .75rem 0 .55rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper);
}

.page-products .pd-topic .entry {
  position: relative;
  padding-left: .9rem;
  font-size: .87rem;
  line-height: 1.78;
  color: rgba(244, 240, 230, .78);
}

.page-products .pd-topic .entry::before {
  content: "";
  position: absolute;
  left: 0;
  top: .64em;
  width: .3rem;
  height: .3rem;
  border-radius: 1px;
  background-color: var(--neon);
  opacity: .7;
}

/* ---------- 场景列表 ---------- */
.page-products .pd-scenes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .75rem;
}

.page-products .pd-scene {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .3rem;
  padding: .92rem 1.05rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--clay);
  border-radius: var(--radius);
  background-color: rgba(10, 18, 48, .58);
}

.page-products .pd-scene-q {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--paper);
}

.page-products .pd-scene-a {
  margin: 0;
  font-size: .88rem;
  line-height: 1.78;
  color: rgba(244, 240, 230, .76);
}

/* ---------- 个人页第二栏 ---------- */
.page-products .pd-vault-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .9rem;
}

.page-products .pd-vault {
  position: relative;
  padding: 1.05rem 1.1rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: rgba(10, 18, 48, .68);
  background-image: linear-gradient(140deg, rgba(56, 225, 198, .08), rgba(10, 18, 48, 0) 56%);
}

.page-products .pd-vault-tag {
  display: inline-block;
  padding: .2rem .5rem;
  border: 1px solid rgba(201, 162, 39, .55);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-products .pd-vault h3 {
  margin: .72rem 0 .45rem;
  font-family: var(--font-serif);
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--paper);
}

.page-products .pd-vault p {
  margin: 0;
  font-size: .88rem;
  line-height: 1.78;
  color: rgba(244, 240, 230, .78);
}

.page-products .pd-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}

.page-products .pd-other {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.3rem;
  margin-top: 1.4rem;
  padding-top: 1.1rem;
  border-top: 1px dashed var(--line);
}

.page-products .pd-other a {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}

.page-products .pd-other a:hover,
.page-products .pd-other a:focus-visible {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

/* ---------- 图片与注释间隔 ---------- */
.page-products .pd-figure {
  margin: 1.4rem 0 0;
}

.page-products .pd-figure .frame-caption {
  margin-top: .55rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .05em;
  color: var(--mist);
}

.page-products .pd-note {
  margin-top: 1.3rem;
  font-size: .87rem;
  line-height: 1.8;
  color: rgba(244, 240, 230, .76);
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-products .pd-hero-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
    gap: clamp(1.6rem, 4vw, 3rem);
  }

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

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

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

  .page-products .pd-scene {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
    align-items: baseline;
    gap: .3rem 1.1rem;
  }
}

/* ---------- 桌面双栏 ---------- */
@media (min-width: 1000px) {
  .page-products .pd-body {
    grid-template-columns: var(--pd-rail) minmax(0, 1fr);
    align-items: start;
    gap: clamp(2rem, 3.4vw, 3.2rem);
  }

  .page-products .pd-rail {
    position: sticky;
    top: var(--pd-sticky);
    max-height: calc(100vh - 8.5rem);
    overflow-y: auto;
    padding-right: .3rem;
  }

  .page-products .pd-tree-sub {
    padding-left: .3rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pd-step,
  .page-products .pd-topic,
  .page-products .pd-copy,
  .page-products .pd-tree-top,
  .page-products .pd-tree-sub .index-link,
  .page-products .pd-other a {
    transition: none;
  }

  .page-products .pd-step:hover,
  .page-products .pd-step:focus-within,
  .page-products .pd-topic:hover {
    transform: none;
  }
}