.page-products {
  --pd-line: rgba(242, 237, 227, 0.13);
  --pd-line-strong: rgba(242, 237, 227, 0.26);
  --pd-glass: linear-gradient(165deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.012));
  --pd-muted: #8E958F;
  background: var(--arena);
  color: var(--paper);
  overflow-x: hidden;
}

.page-products .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 首屏 ---------- */
.page-products .pd-hero {
  position: relative;
  padding: calc(var(--header-h) + 44px) 0 68px;
  border-bottom: 1px solid var(--pd-line);
  overflow: hidden;
}

.page-products .pd-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(242, 237, 227, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242, 237, 227, 0.05) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(130% 95% at 18% 0%, #000 18%, transparent 78%);
  mask-image: radial-gradient(130% 95% at 18% 0%, #000 18%, transparent 78%);
  pointer-events: none;
}

.page-products .pd-hero::after {
  content: "";
  position: absolute;
  top: -180px;
  right: -170px;
  width: 540px;
  height: 540px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.4), rgba(76, 29, 149, 0.08) 58%, transparent 72%);
  filter: blur(12px);
  pointer-events: none;
  animation: pd-breathe 7.5s ease-in-out infinite;
}

@keyframes pd-breathe {
  0%, 100% { opacity: 0.72; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.07); }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pd-hero::after { animation: none; }
}

.page-products .pd-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 48px;
}

.page-products .breadcrumbs {
  margin: 0 0 22px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--pd-muted);
}

.page-products .breadcrumbs a {
  color: var(--neon);
  text-decoration: none;
}

.page-products .breadcrumbs a:hover {
  text-decoration: underline;
}

.page-products .breadcrumbs span[aria-hidden] {
  margin: 0 8px;
  color: var(--pd-muted);
}

.page-products .pd-hero__copy h1 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(31px, 7vw, 54px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-products .pd-hero__lead {
  margin: 22px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: #C9C6BE;
}

.page-products .pd-hero__cta {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .pd-specs {
  margin: 38px 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--pd-line);
  border: 1px solid var(--pd-line);
  border-radius: 14px;
  overflow: hidden;
}

.page-products .pd-specs__item {
  background: var(--arena);
  padding: 14px 16px 16px;
}

.page-products .pd-specs dt {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--pd-muted);
}

.page-products .pd-specs dd {
  margin: 8px 0 0;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--neon);
}

/* 设备框 */
.page-products .pd-hero__device {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.page-products .pd-device {
  position: relative;
  width: min(278px, 76vw);
  aspect-ratio: 9 / 16;
  padding: 11px;
  border-radius: 38px;
  border: 1px solid var(--pd-line-strong);
  background: var(--pd-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow:
    0 40px 90px -48px rgba(139, 92, 246, 0.85),
    inset 0 1px 0 rgba(255, 255, 255, 0.09);
}

.page-products .pd-device__bar {
  position: absolute;
  top: 21px;
  left: 50%;
  transform: translateX(-50%);
  width: 66px;
  height: 5px;
  border-radius: 999px;
  background: rgba(242, 237, 227, 0.22);
}

.page-products .pd-device__screen {
  height: 100%;
  border-radius: 28px;
  overflow: hidden;
  background: var(--deep);
  border: 1px solid rgba(242, 237, 227, 0.08);
}

.page-products .pd-device__screen img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-products .pd-device__cap {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--pd-muted);
}

/* ---------- 通用标题 ---------- */
.page-products .pd-head {
  max-width: 46em;
  margin-bottom: 40px;
}

.page-products .pd-head--tight {
  margin-top: 56px;
}

.page-products .pd-head h2 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(25px, 4.6vw, 38px);
  line-height: 1.26;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-products .pd-head__lead {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: #B9B6AE;
}

/* ---------- 更新要点 ---------- */
.page-products .pd-update {
  background:
    radial-gradient(760px 420px at 92% 0%, rgba(200, 255, 60, 0.07), transparent 68%),
    var(--arena);
}

.page-products .pd-update__grid {
  display: grid;
  gap: 16px;
}

.page-products .pd-update__card {
  position: relative;
  padding: 24px 22px 26px;
  border: 1px solid var(--pd-line);
  border-radius: 16px;
  background: var(--pd-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-products .pd-update__card:hover {
  border-color: rgba(200, 255, 60, 0.42);
  transform: translateY(-4px);
}

.page-products .pd-update__card h3 {
  margin: 16px 0 0;
  font-size: 19px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--paper);
}

.page-products .pd-update__card p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: #ABA8A1;
}

/* ---------- 图片组件 ---------- */
.page-products .pd-figure {
  margin: 0;
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--pd-line);
  background: var(--deep);
}

.page-products .pd-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.95) contrast(1.04);
}

.page-products .pd-figure--wide img {
  aspect-ratio: 3 / 2;
}

.page-products .pd-figure--slim img {
  aspect-ratio: 16 / 5;
}

.page-products .pd-figure::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--neon), var(--violet));
  opacity: 0.8;
}

.page-products .pd-figure figcaption {
  padding: 12px 16px 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--pd-muted);
  background: rgba(10, 13, 18, 0.9);
}

/* ---------- 功能清单 ---------- */
.page-products .pd-features {
  background: var(--arena);
}

.page-products .pd-modules {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--pd-line);
}

.page-products .pd-module {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 8px;
  padding: 26px 0;
  border-bottom: 1px solid var(--pd-line);
}

.page-products .pd-module__idx {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--violet);
  padding-top: 4px;
}

.page-products .pd-module__body h3 {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  color: var(--neon);
  letter-spacing: -0.01em;
}

.page-products .pd-module__body p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: #B4B1AA;
  max-width: 62em;
}

/* ---------- 版本迭代 ---------- */
.page-products .pd-versions {
  background:
    linear-gradient(180deg, rgba(76, 29, 149, 0.14), transparent 42%),
    var(--deep);
  border-top: 1px solid var(--pd-line);
  border-bottom: 1px solid var(--pd-line);
}

.page-products .pd-versions__inner {
  position: relative;
}

.page-products .pd-versions__list {
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--pd-line);
}

.page-products .pd-version {
  display: grid;
  gap: 8px;
  padding: 26px 0;
  border-bottom: 1px solid var(--pd-line);
}

.page-products .pd-version__meta {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-products .pd-version__no {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--neon);
}

.page-products .pd-version__when {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--pd-muted);
}

.page-products .pd-version__body h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  color: var(--paper);
}

.page-products .pd-version__body p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: #A9A6A0;
}

.page-products .pd-rail {
  display: none;
}

/* ---------- 安装步骤 ---------- */
.page-products .pd-install {
  background: var(--arena);
}

.page-products .pd-install__layer {
  border-radius: 20px;
  padding: 34px 22px 36px;
}

.page-products .pd-install__head h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4.4vw, 36px);
  line-height: 1.28;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-products .pd-install__lead {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 40em;
}

.page-products .pd-fit {
  margin-top: 34px;
  display: grid;
  gap: 26px;
}

.page-products .pd-fit__col h3 {
  margin: 0;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--ink);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--neon-dim);
}

.page-products .pd-fit__col ul {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-products .pd-fit__col li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-products .pd-fit__col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--violet);
}

.page-products .pd-steps {
  margin-top: 34px;
  border-top: 1px solid rgba(26, 29, 34, 0.16);
}

.page-products .pd-step {
  border-bottom: 1px solid rgba(26, 29, 34, 0.16);
}

.page-products .pd-step summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 0;
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

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

.page-products .pd-step summary .mono {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--violet-deep);
}

.page-products .pd-step summary::after {
  content: "+";
  margin-left: auto;
  font-size: 20px;
  font-weight: 500;
  color: var(--neon-dim);
}

.page-products .pd-step[open] summary::after {
  content: "–";
}

.page-products .pd-step p {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-soft);
  max-width: 46em;
}

.page-products .pd-step .copy-btn {
  margin: 0 0 20px;
}

/* ---------- 同步 ---------- */
.page-products .pd-sync {
  background: var(--arena);
}

.page-products .pd-sync__grid {
  align-items: start;
}

.page-products .pd-sync__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 22px;
}

.page-products .pd-sync__list li {
  padding-left: 16px;
  border-left: 2px solid rgba(200, 255, 60, 0.45);
}

.page-products .pd-sync__list h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  color: var(--paper);
}

.page-products .pd-sync__list p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: #ABA8A1;
}

/* ---------- 备用入口 ---------- */
.page-products .pd-backup {
  background:
    radial-gradient(620px 340px at 8% 100%, rgba(139, 92, 246, 0.16), transparent 70%),
    var(--deep);
  border-top: 1px solid var(--pd-line);
}

.page-products .pd-backup__grid {
  display: grid;
  gap: 34px;
}

.page-products .pd-backup__copy h2 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4.4vw, 36px);
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-products .pd-backup__copy p {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: #B4B1AA;
  max-width: 36em;
}

.page-products .pd-backup__hint {
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid rgba(255, 176, 32, 0.32);
  background: rgba(255, 176, 32, 0.07);
  color: #EDE3CE;
  font-size: 14px;
  line-height: 1.8;
}

.page-products .pd-backup__figure img {
  aspect-ratio: 3 / 2;
}

/* ---------- 帮助入口 ---------- */
.page-products .pd-help {
  background: var(--arena);
  border-top: 1px solid var(--pd-line);
}

.page-products .pd-help__grid {
  display: grid;
  gap: 14px;
}

.page-products .pd-help__card {
  display: block;
  padding: 24px 22px;
  border-radius: 16px;
  border: 1px solid var(--pd-line);
  background: var(--pd-glass);
  text-decoration: none;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-products .pd-help__card:hover {
  border-color: rgba(200, 255, 60, 0.5);
  background: rgba(200, 255, 60, 0.05);
}

.page-products .pd-help__no {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--violet);
}

.page-products .pd-help__card h3 {
  margin: 12px 0 0;
  font-size: 18px;
  font-weight: 800;
  color: var(--paper);
}

.page-products .pd-help__card p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: #ABA8A1;
}

.page-products .pd-help__more {
  margin: 30px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: #B4B1AA;
}

.page-products .pd-help__more a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 255, 60, 0.5);
}

.page-products .pd-help__more a:hover {
  border-bottom-color: var(--neon);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-products .pd-update__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-products .pd-fit {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 34px;
  }

  .page-products .pd-install__layer {
    padding: 44px 40px 48px;
  }
}

@media (min-width: 920px) {
  .page-products .pd-hero {
    padding: calc(var(--header-h) + 72px) 0 96px;
  }

  .page-products .pd-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 56px;
    align-items: center;
  }

  .page-products .pd-update__card:nth-child(even) {
    margin-top: 34px;
  }

  .page-products .pd-module {
    grid-template-columns: 72px minmax(0, 1fr);
    padding: 30px 0;
  }

  .page-products .pd-version {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 28px;
    align-items: baseline;
  }

  .page-products .pd-backup__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 52px;
    align-items: center;
  }

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

@media (min-width: 1200px) {
  .page-products .pd-versions__inner {
    padding-right: 104px;
  }

  .page-products .pd-rail {
    position: absolute;
    top: 96px;
    right: 0;
    display: flex;
    flex-direction: column;
    gap: 92px;
    align-items: flex-end;
    pointer-events: none;
  }

  .page-products .pd-rail__tick {
    position: relative;
    font-size: 12px;
    letter-spacing: 0.08em;
    color: var(--pd-muted);
    padding-right: 14px;
  }

  .page-products .pd-rail__tick::after {
    content: "";
    position: absolute;
    right: 0;
    top: 50%;
    width: 9px;
    height: 1px;
    background: var(--pd-line-strong);
  }

  .page-products .pd-rail__tick:first-child {
    color: var(--neon);
  }

  .page-products .pd-rail__tick:first-child::after {
    background: var(--neon);
  }
}