.page-products {
  --pk-cut: 20px;
  --pk-accent: var(--cyan);
  padding-top: 0;
  background: var(--midnight);
  color: var(--white);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-products .pk-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 48px) 0 64px;
  background:
    radial-gradient(820px 420px at 82% 6%, rgba(122, 43, 255, 0.3), transparent 68%),
    radial-gradient(660px 400px at 4% 96%, rgba(20, 224, 210, 0.14), transparent 70%),
    linear-gradient(168deg, var(--midnight) 0%, var(--charcoal) 100%);
  border-bottom: 1px solid var(--line);
}

.page-products .pk-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(42, 51, 84, 0.5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 51, 84, 0.5) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(120% 92% at 50% 38%, #000 32%, transparent 88%);
  mask-image: radial-gradient(120% 92% at 50% 38%, #000 32%, transparent 88%);
  pointer-events: none;
}

.page-products .pk-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 5px;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 24px);
  pointer-events: none;
}

.page-products .pk-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
}

.page-products .pk-hero-copy .display-title {
  margin: 16px 0 20px;
  font-size: clamp(36px, 7.2vw, 84px);
  line-height: 1.04;
  letter-spacing: -0.01em;
}

.page-products .pk-lead {
  max-width: 52ch;
  margin: 0;
  font-size: 17px;
  line-height: 1.85;
  color: var(--muted);
}

.page-products .pk-stats {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 18px;
  max-width: 660px;
}

.page-products .pk-stats li {
  border-top: 2px solid var(--cyan);
  padding-top: 12px;
}

.page-products .pk-stats li:nth-child(2) { border-top-color: var(--violet); }
.page-products .pk-stats li:nth-child(3) { border-top-color: var(--orange); }
.page-products .pk-stats li:nth-child(4) { border-top-color: var(--yellow); }

.page-products .pk-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 20px;
  letter-spacing: 0.04em;
  color: var(--white);
}

.page-products .pk-stat-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-products .pk-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.page-products .pk-hero-index {
  align-self: start;
  padding-left: 0;
  border-left: 0;
}

.page-products .pk-index-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-products .pk-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 16px;
}

.page-products .pk-index-list a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-products .pk-index-list a span {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-products .pk-index-list a:hover,
.page-products .pk-index-list a:focus-visible {
  color: var(--white);
  transform: translateX(3px);
}

/* ---------- 通用屏段 ---------- */
.page-products .pk-section {
  position: relative;
  padding: 64px 0;
  border-bottom: 1px solid var(--line);
}

.page-products .pk-section:last-of-type {
  border-bottom: 0;
}

.page-products .pk-caption {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 三端入口 ---------- */
.page-products .pk-entrance-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

.page-products .pk-entrance-stack {
  display: grid;
  gap: 20px;
}

.page-products .pk-entrance-card {
  --pk-accent: var(--cyan);
  position: relative;
  padding: 24px 22px 26px;
  background: linear-gradient(158deg, rgba(18, 20, 31, 0.96), rgba(10, 14, 31, 0.96));
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--pk-cut)) 0, 100% var(--pk-cut), 100% 100%, var(--pk-cut) 100%, 0 calc(100% - var(--pk-cut)));
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-products .pk-entrance-card:nth-child(2) { --pk-accent: var(--violet); }
.page-products .pk-entrance-card:nth-child(3) { --pk-accent: var(--orange); }

.page-products .pk-entrance-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  bottom: 22px;
  width: 3px;
  background: var(--pk-accent);
  box-shadow: 0 0 16px var(--pk-accent);
}

.page-products .pk-entrance-card:hover {
  border-color: rgba(20, 224, 210, 0.45);
  transform: translateX(4px);
}

.page-products .pk-entrance-name {
  margin: 14px 0 10px;
  font-size: 21px;
  line-height: 1.4;
  font-weight: 700;
  font-style: italic;
  color: var(--white);
}

.page-products .pk-entrance-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-products .pk-bullets {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-products .pk-bullets li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .pk-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 7px;
  height: 7px;
  background: var(--pk-accent);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-products .pk-entrance-visual {
  margin: 0;
}

/* ---------- 核心功能 ---------- */
.page-products .pk-features-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

.page-products .pk-feature-visual {
  margin: 0;
}

.page-products .pk-features-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-products .pk-feature {
  --pk-accent: var(--cyan);
  padding: 22px 20px 24px;
  background: rgba(18, 20, 31, 0.82);
  border: 1px solid var(--line);
  border-top: 2px solid var(--pk-accent);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-products .pk-feature:nth-child(6n+1) { --pk-accent: var(--cyan); }
.page-products .pk-feature:nth-child(6n+2) { --pk-accent: var(--violet); }
.page-products .pk-feature:nth-child(6n+3) { --pk-accent: var(--orange); }
.page-products .pk-feature:nth-child(6n+4) { --pk-accent: var(--yellow); }
.page-products .pk-feature:nth-child(6n+5) { --pk-accent: var(--cyan); }
.page-products .pk-feature:nth-child(6n+6) { --pk-accent: var(--violet); }

.page-products .pk-feature:hover {
  background: rgba(26, 29, 45, 0.92);
  transform: translateY(-3px);
}

.page-products .pk-feature-icon {
  display: block;
  width: 32px;
  height: 32px;
  margin-bottom: 14px;
  color: var(--pk-accent);
}

.page-products .pk-feature-icon svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-products .pk-feature-title {
  margin: 0 0 8px;
  font-size: 17px;
  line-height: 1.5;
  color: var(--white);
}

.page-products .pk-feature-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 安卓安装 ---------- */
.page-products .pk-android-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

.page-products .pk-android-visual {
  margin: 0;
}

.page-products .pk-android-body {
  display: grid;
  gap: 24px;
  align-content: start;
}

.page-products .pk-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: pkstep;
}

.page-products .pk-step {
  position: relative;
  display: grid;
}

.page-products .pk-step-check {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  margin: 0;
}

.page-products .pk-step-label {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px 18px 16px 20px;
  background: rgba(18, 20, 31, 0.8);
  border: 1px solid var(--line);
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-products .pk-step-label::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--yellow);
  box-shadow: 0 0 14px var(--yellow);
  opacity: 0;
  transition: opacity 0.2s var(--ease);
}

.page-products .pk-step-check:checked + .pk-step-label {
  border-color: rgba(230, 255, 61, 0.5);
  background: rgba(232, 255, 61, 0.05);
}

.page-products .pk-step-check:checked + .pk-step-label::before {
  opacity: 1;
}

.page-products .pk-step-check:focus-visible + .pk-step-label {
  outline: 2px solid var(--yellow);
  outline-offset: 2px;
}

.page-products .pk-step-num {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}

.page-products .pk-step-check:checked + .pk-step-label .pk-step-num {
  color: var(--yellow);
  border-color: rgba(230, 255, 61, 0.6);
}

.page-products .pk-step-body {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .pk-step-body strong {
  display: block;
  margin-bottom: 4px;
  font-size: 15.5px;
  font-style: italic;
  color: var(--white);
}

.page-products .pk-reqs {
  margin: 0;
}

.page-products .pk-req-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .pk-req-list li {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line);
  font-size: 14px;
  line-height: 1.7;
}

.page-products .pk-req-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-products .pk-req-key {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-products .pk-req-val {
  color: var(--muted);
}

.page-products .pk-hints {
  display: grid;
  gap: 10px;
}

.page-products .pk-hint {
  padding: 14px 16px;
  background: rgba(10, 14, 31, 0.7);
  border-left: 2px solid var(--violet);
  transition: background 0.2s var(--ease);
}

.page-products .pk-hint-key {
  margin: 0;
  font-size: 14.5px;
  color: var(--white);
}

.page-products .pk-hint-body {
  max-height: 0;
  margin: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  transition: max-height 0.28s var(--ease), opacity 0.28s var(--ease), margin 0.28s var(--ease);
}

.page-products .pk-hint:hover,
.page-products .pk-hint:focus-within {
  background: rgba(18, 20, 31, 0.95);
}

.page-products .pk-hint:hover .pk-hint-body,
.page-products .pk-hint:focus-within .pk-hint-body {
  max-height: 200px;
  margin-top: 8px;
  opacity: 1;
}

.page-products .pk-hint:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 版本记录 ---------- */
.page-products .pk-version-rail {
  margin-top: 8px;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 12px;
}

.page-products .pk-version-track {
  list-style: none;
  position: relative;
  margin: 0;
  padding: 4px 4px 20px;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(240px, 1fr);
  gap: 16px;
}

.page-products .pk-version-track::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 34px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), var(--violet), var(--orange));
  opacity: 0.45;
}

.page-products .pk-version-node {
  position: relative;
  scroll-snap-align: start;
  padding: 46px 18px 22px;
  background: linear-gradient(170deg, rgba(18, 20, 31, 0.96), rgba(10, 14, 31, 0.96));
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}

.page-products .pk-version-node::after {
  content: "";
  position: absolute;
  left: 18px;
  top: 29px;
  width: 10px;
  height: 10px;
  background: var(--charcoal);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 12px rgba(20, 224, 210, 0.7);
  transform: rotate(45deg);
}

.page-products .pk-version-badge {
  position: absolute;
  right: 16px;
  top: 14px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--charcoal);
  background: var(--yellow);
  box-shadow: 0 0 14px rgba(230, 255, 61, 0.5);
}

.page-products .pk-version-num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-products .pk-version-title {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.5;
  color: var(--white);
}

.page-products .pk-version-text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .pk-version-visual {
  margin: 32px 0 0;
}

/* ---------- 使用场景 ---------- */
.page-products .pk-scene-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-products .pk-scene-visual {
  margin: 0;
}

.page-products .pk-scene-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-products .pk-scene-item {
  padding: 20px 20px 22px;
  background: rgba(18, 20, 31, 0.82);
  border-left: 3px solid var(--violet);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-products .pk-scene-item:nth-child(2) { border-left-color: var(--orange); }
.page-products .pk-scene-item:nth-child(3) { border-left-color: var(--cyan); }
.page-products .pk-scene-item:nth-child(4) { border-left-color: var(--cyan); }

.page-products .pk-scene-where {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-products .pk-scene-title {
  margin: 0 0 8px;
  font-size: 17px;
  line-height: 1.5;
  font-style: italic;
  color: var(--white);
}

.page-products .pk-scene-text {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 获取与升级 ---------- */
.page-products .pk-start-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-products .pk-start-block {
  padding: 24px 22px 26px;
  background: rgba(18, 20, 31, 0.82);
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.page-products .pk-start-block:nth-child(2) { border-top-color: var(--violet); }
.page-products .pk-start-block:nth-child(3) { border-top-color: var(--orange); }
.page-products .pk-start-block--accent {
  border-top-color: var(--yellow);
  background: linear-gradient(160deg, rgba(122, 43, 255, 0.14), rgba(18, 20, 31, 0.9));
}

.page-products .pk-start-title {
  margin: 0 0 12px;
  font-size: 18px;
  line-height: 1.5;
  color: var(--white);
}

.page-products .pk-start-text {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-products .pk-start-text:last-child {
  margin-bottom: 0;
}

.page-products .pk-start-text a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(20, 224, 210, 0.4);
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-products .pk-start-text a:hover,
.page-products .pk-start-text a:focus-visible {
  color: var(--yellow);
  border-bottom-color: var(--yellow);
}

.page-products .pk-copy-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-products .pk-copy-row .copy-chip {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-products .pk-features-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 880px) {
  .page-products .pk-section {
    padding: 80px 0;
  }

  .page-products .pk-hero {
    padding: calc(var(--header-h) + 64px) 0 88px;
  }

  .page-products .pk-hero-inner {
    grid-template-columns: minmax(0, 1fr) 200px;
    gap: 48px;
    align-items: start;
  }

  .page-products .pk-hero-index {
    padding-left: 22px;
    border-left: 1px solid var(--line);
  }

  .page-products .pk-index-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

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

@media (min-width: 1000px) {
  .page-products .pk-entrance-layout {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr);
    gap: 44px;
    align-items: start;
  }

  .page-products .pk-entrance-card:nth-child(2) {
    margin-left: 34px;
  }

  .page-products .pk-entrance-card:nth-child(3) {
    margin-left: 68px;
  }

  .page-products .pk-features-layout {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 44px;
    align-items: start;
  }

  .page-products .pk-android-layout {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: 44px;
    align-items: start;
  }

  .page-products .pk-scene-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 40px;
    align-items: start;
  }

  .page-products .pk-version-track {
    grid-auto-columns: minmax(272px, 1fr);
  }
}

@media (min-width: 1180px) {
  .page-products .pk-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .pk-features-grid {
    gap: 18px;
  }
}

@media (hover: none) {
  .page-products .pk-hint-body {
    max-height: 200px;
    margin-top: 8px;
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pk-entrance-card,
  .page-products .pk-feature,
  .page-products .pk-hint-body,
  .page-products .pk-index-list a {
    transition: none;
  }

  .page-products .pk-entrance-card:hover,
  .page-products .pk-feature:hover,
  .page-products .pk-index-list a:hover {
    transform: none;
  }
}