.page-products {
  --pd-gap: clamp(20px, 2.6vw, 32px);
  --pd-pad-y: clamp(52px, 6.6vw, 100px);
  color: var(--paper);
  font-family: var(--font-body);
}

.page-products [id] {
  scroll-margin-top: 96px;
}

.page-products .pd-crumb-sep {
  color: var(--line);
  margin: 0 8px;
}

/* ── 首屏 ─────────────────────────── */
.page-products .pd-masthead {
  position: relative;
  padding-top: clamp(22px, 3.2vw, 44px);
  padding-bottom: clamp(36px, 4.6vw, 72px);
}

.page-products .pd-masthead::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 340px;
  background-image:
    linear-gradient(to right, var(--line-faint) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-faint) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: .3;
  mask-image: radial-gradient(120% 100% at 20% 0%, #000 6%, transparent 70%);
  -webkit-mask-image: radial-gradient(120% 100% at 20% 0%, #000 6%, transparent 70%);
  pointer-events: none;
}

.page-products .pd-masthead-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 3.6vw, 56px);
  margin-top: clamp(24px, 3.2vw, 42px);
}

@media (min-width: 1024px) {
  .page-products .pd-masthead-grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(240px, .9fr);
    align-items: start;
  }
}

.page-products .pd-masthead-main h1 {
  font-family: var(--font-head);
  font-weight: 800;
  font-stretch: 88%;
  font-size: clamp(30px, 4.8vw, 56px);
  line-height: 1.12;
  letter-spacing: -.022em;
  margin: clamp(14px, 1.8vw, 22px) 0 0;
  color: var(--paper);
}

.page-products .pd-masthead-main .lead {
  margin: clamp(16px, 2vw, 24px) 0 0;
  max-width: 34em;
}

.page-products .pd-masthead-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 2.6vw, 32px);
}

.page-products .pd-masthead-side {
  border-left: 2px solid var(--line);
  padding-left: clamp(16px, 1.8vw, 24px);
}

.page-products .pd-side-title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-products .pd-side-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-products .pd-side-list a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 9px 4px 9px 0;
  border-bottom: 1px solid var(--line-faint);
  color: var(--paper);
  font-size: 15px;
  text-decoration: none;
  transition: color var(--fast) var(--ease), padding-left var(--fast) var(--ease);
}

.page-products .pd-side-list a .num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-products .pd-side-list a:hover,
.page-products .pd-side-list a:focus-visible {
  color: var(--cyan-soft);
  padding-left: 6px;
}

/* ── 通用章节 ─────────────────────── */
.page-products .pd-section {
  position: relative;
  padding-block: var(--pd-pad-y);
}

.page-products .pd-section-head {
  display: grid;
  gap: 12px;
  max-width: 64ch;
  margin-bottom: clamp(28px, 3.6vw, 48px);
}

.page-products .pd-section-head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-stretch: 88%;
  font-size: clamp(24px, 3.1vw, 38px);
  line-height: 1.18;
  letter-spacing: -.018em;
}

.page-products .pd-section-note {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  line-height: 1.76;
}

.page-products .pd-section--narrow .pd-section-head,
.page-products .pd-section--narrow .pd-flow,
.page-products .pd-section--narrow .pd-seat-figure {
  max-width: 780px;
}

/* ── 技能树 ───────────────────────── */
.page-products .pd-tree {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .pd-tree-node {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: clamp(14px, 1.8vw, 26px);
  padding-block: clamp(20px, 2.4vw, 30px);
  border-top: 1px solid var(--line-faint);
}

.page-products .pd-tree-node:last-child {
  border-bottom: 1px solid var(--line-faint);
}

.page-products .pd-tree-mark {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  min-height: 40px;
}

.page-products .pd-tree-mark .num {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--cyan);
  line-height: 1;
}

.page-products .pd-tree-line {
  flex: 1;
  width: 1px;
  min-height: 16px;
  background: linear-gradient(180deg, var(--line) 0%, transparent 96%);
}

.page-products .pd-tree-node:last-child .pd-tree-line {
  display: none;
}

.page-products .pd-tree-body h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 700;
  line-height: 1.32;
}

.page-products .pd-tree-body h3 a {
  color: var(--paper);
  text-decoration: none;
  background-image: linear-gradient(var(--cyan), var(--cyan));
  background-repeat: no-repeat;
  background-size: 0% 1px;
  background-position: 0 100%;
  transition: background-size var(--base) var(--ease), color var(--fast) var(--ease);
}

.page-products .pd-tree-body h3 a:hover,
.page-products .pd-tree-body h3 a:focus-visible {
  background-size: 100% 1px;
  color: var(--cyan-soft);
}

.page-products .pd-tree-body p {
  margin: 10px 0 0;
  max-width: 62ch;
  color: var(--muted);
  line-height: 1.78;
}

/* ── V4 客户端 ────────────────────── */
.page-products .pd-v4-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pd-gap);
}

@media (min-width: 900px) {
  .page-products .pd-v4-layout {
    grid-template-columns: minmax(0, 1fr) minmax(220px, 300px);
    align-items: start;
  }
}

.page-products .pd-funcs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-faint);
  border: 1px solid var(--line-faint);
  clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
}

@media (min-width: 620px) {
  .page-products .pd-funcs {
    grid-template-columns: 1fr 1fr;
  }
}

.page-products .pd-func {
  display: grid;
  align-content: start;
  gap: 8px;
  padding: clamp(20px, 2.4vw, 30px);
  background: var(--ink-800);
  transition: background-color var(--base) var(--ease);
}

.page-products .pd-func:hover {
  background: var(--ink-700);
}

.page-products .pd-func-no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1;
  letter-spacing: .08em;
  color: var(--cyan);
  border-left: 2px solid var(--cyan);
  padding-left: 8px;
}

.page-products .pd-func h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 700;
  line-height: 1.3;
}

.page-products .pd-func p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

.page-products .pd-v4-shot {
  margin: 0;
}

.page-products .pd-v4-shot img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--ink-700);
  border: 1px solid var(--line);
  clip-path: polygon(16px 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%, 0 16px);
}

.page-products .pd-v4-shot figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ── 平板版页面 ───────────────────── */
.page-products .pd-tablet-shot {
  margin: 0;
}

.page-products .pd-tablet-shot img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--ink-700);
  border: 1px solid var(--line);
  clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
}

.page-products .pd-tablet-shot figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-products .pd-devices {
  display: grid;
  gap: 16px;
  margin-top: clamp(28px, 3.4vw, 44px);
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--ink-800);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-products .pd-devices-title {
  margin: 0 0 4px;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-products .pd-device {
  display: grid;
  gap: 6px;
}

.page-products .pd-device-name {
  font-size: 14px;
  line-height: 1.5;
  color: var(--paper);
}

.page-products .pd-device-track {
  display: block;
  height: 10px;
  background: var(--ink-700);
  border: 1px solid var(--line-faint);
  overflow: hidden;
}

.page-products .pd-device-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--line) 0%, var(--cyan) 100%);
  transition: width var(--slow) var(--ease);
}

.page-products .pd-device-fill--wide { width: 100%; }
.page-products .pd-device-fill--mid { width: 62%; }
.page-products .pd-device-fill--narrow { width: 30%; }

/* ── 四席外援登记 ─────────────────── */
.page-products .pd-flow {
  margin-top: clamp(8px, 1.4vw, 16px);
}

.page-products .pd-step {
  border-top: 1px solid var(--line-soft);
  padding: clamp(16px, 2vw, 22px) 0;
}

.page-products .pd-step:last-of-type {
  border-bottom: 1px solid var(--line-soft);
}

.page-products .pd-step > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 6px 16px;
}

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

.page-products .pd-step-no {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-products .pd-step-name {
  font-family: var(--font-head);
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--paper);
}

.page-products .pd-step-name::after {
  display: inline-block;
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cyan);
}

.page-products .pd-step:not([open]) .pd-step-name::after { content: "+"; }
.page-products .pd-step[open] .pd-step-name::after { content: "—"; }

.page-products .pd-step-hint {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
  text-align: right;
}

.page-products .pd-step-body {
  padding: 14px 0 6px 56px;
}

.page-products .pd-step-body p {
  margin: 0 0 10px;
  max-width: 62ch;
  color: var(--muted);
  line-height: 1.78;
}

.page-products .pd-step-body p:last-child {
  margin-bottom: 0;
}

@media (max-width: 620px) {
  .page-products .pd-step > summary {
    grid-template-columns: 36px minmax(0, 1fr);
  }
  .page-products .pd-step-hint {
    grid-column: 2;
    text-align: left;
  }
  .page-products .pd-step-body {
    padding-left: 0;
  }
}

.page-products .pd-seat-figure {
  margin: clamp(28px, 3.4vw, 44px) 0 0;
}

.page-products .pd-seat-figure img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--ink-700);
  border: 1px solid var(--line);
  clip-path: polygon(16px 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%, 0 16px);
}

.page-products .pd-seat-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ── 赛区分布图 ───────────────────── */
.page-products .pd-map-wrap {
  padding: clamp(16px, 2.4vw, 28px);
  background:
    linear-gradient(180deg, var(--ink-800) 0%, var(--ink-900) 100%);
  border: 1px solid var(--line-soft);
  clip-path: polygon(22px 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%, 0 22px);
}

.page-products .pd-map {
  display: block;
  width: 100%;
  height: auto;
}

.page-products .pd-map-cell rect {
  fill: var(--ink-800);
  stroke: var(--line);
  stroke-width: 1;
  transition: fill var(--base) var(--ease), stroke var(--base) var(--ease);
}

.page-products .pd-map-cell text {
  fill: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: .06em;
}

.page-products .pd-map-cell:hover rect {
  fill: var(--ink-700);
  stroke: var(--cyan);
}

.page-products .pd-hot {
  fill: var(--amber);
}

@keyframes pd-hot-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .42; }
}

.page-products [data-in-view] .pd-hot {
  animation: pd-hot-pulse 3.2s ease-in-out infinite;
}

.page-products .pd-legend {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  font-size: 13px;
  color: var(--muted);
}

.page-products .pd-legend li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-products .pd-legend-dot {
  width: 10px;
  height: 10px;
  background: var(--line);
  border-radius: 50%;
  flex: none;
}

.page-products .pd-legend-dot--hot {
  background: var(--amber);
}

.page-products .pd-district-figure {
  margin: clamp(28px, 3.4vw, 44px) 0 0;
}

.page-products .pd-district-figure img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--ink-700);
  border: 1px solid var(--line);
}

.page-products .pd-district-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ── 数据查证 ─────────────────────── */
.page-products .pd-verify {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 2.6vw, 30px);
}

@media (min-width: 760px) {
  .page-products .pd-verify {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-products .pd-verify-item {
  position: relative;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
}

.page-products .pd-verify-item::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 48px;
  height: 2px;
  background: var(--cyan);
}

.page-products .pd-verify-no {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-products .pd-verify-item h3 {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 700;
  line-height: 1.3;
}

.page-products .pd-verify-item p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.74;
}

.page-products .pd-fix-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(28px, 3.2vw, 40px);
}

.page-products .pd-split-figure {
  margin: clamp(30px, 3.6vw, 48px) 0 0;
}

.page-products .pd-split-figure img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--ink-700);
  border: 1px solid var(--line);
  clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
}

.page-products .pd-split-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ── 版本演进 ─────────────────────── */
.page-products .pd-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 clamp(20px, 2.4vw, 30px);
  border-left: 1px dashed var(--line);
  display: grid;
  gap: clamp(22px, 2.6vw, 32px);
}

.page-products .pd-tl-item {
  position: relative;
  display: grid;
  gap: 6px;
}

.page-products .pd-tl-item::before {
  content: "";
  position: absolute;
  top: 8px;
  left: calc(-1 * clamp(20px, 2.4vw, 30px) - 4px);
  width: 8px;
  height: 8px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-products .pd-tl-year {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-products .pd-tl-body h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 700;
  line-height: 1.3;
}

.page-products .pd-tl-body p {
  margin: 8px 0 0;
  max-width: 62ch;
  color: var(--muted);
  line-height: 1.76;
}

.page-products .pd-cadence {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(32px, 3.8vw, 52px);
  background: var(--line-faint);
  border: 1px solid var(--line-faint);
}

@media (min-width: 700px) {
  .page-products .pd-cadence {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-products .pd-cadence-item {
  padding: clamp(20px, 2.4vw, 28px);
  background: var(--ink-800);
  display: grid;
  gap: 8px;
  align-content: start;
}

.page-products .pd-cadence-num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-products .pd-cadence-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.66;
  color: var(--muted);
}

/* ── 收尾导航 ─────────────────────── */
.page-products .pd-outro h2 {
  margin: 0 0 clamp(24px, 3vw, 36px);
  font-family: var(--font-head);
  font-weight: 800;
  font-stretch: 88%;
  font-size: clamp(22px, 2.8vw, 32px);
  letter-spacing: -.018em;
}

.page-products .pd-outro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-faint);
  border: 1px solid var(--line-faint);
}

@media (min-width: 760px) {
  .page-products .pd-outro-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-products .pd-outro-card {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: clamp(22px, 2.6vw, 32px);
  background: var(--ink-900);
  color: var(--paper);
  text-decoration: none;
  transition: background-color var(--base) var(--ease);
}

.page-products .pd-outro-card:hover,
.page-products .pd-outro-card:focus-visible {
  background: var(--ink-800);
}

.page-products .pd-outro-card h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 700;
  line-height: 1.34;
}

.page-products .pd-outro-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  .page-products *,
  .page-products *::before,
  .page-products *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}
<<<END>>>
</main>