.page-products {
  --pp-line: rgba(22, 41, 74, 0.95);
  --pp-surface: #0F1F3A;
  --pp-surface-soft: rgba(15, 31, 58, 0.78);
  position: relative;
  overflow-x: hidden;
  padding-top: calc(var(--header-h) + 6px);
  padding-bottom: 56px;
  background:
    radial-gradient(120% 58% at 84% -8%, rgba(53, 240, 138, 0.13), transparent 62%),
    radial-gradient(88% 48% at 4% 10%, rgba(255, 122, 47, 0.09), transparent 60%),
    var(--ink-900);
  color: var(--paper);
}

.page-products .pp-crumb {
  padding-top: 8px;
  padding-bottom: 4px;
}

.page-products .pp-crumb__current {
  color: var(--muted);
}

/* ---------- 首屏 ---------- */
.page-products .pp-hero {
  position: relative;
  padding: 22px 0 8px;
}

.page-products .pp-hero__inner {
  display: grid;
  gap: 26px;
  align-items: end;
}

.page-products .pp-hero__main {
  min-width: 0;
}

.page-products .pp-hero__title {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6vw, 4rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-products .pp-hero__lede {
  max-width: 36rem;
  margin: 0;
  color: var(--muted);
}

.page-products .pp-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-products .pp-hero__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-800);
}

.page-products .pp-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-products .pp-hero__caption {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 12px;
  margin: 0;
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  background: rgba(5, 11, 22, 0.78);
  color: var(--paper);
  font-size: 0.8125rem;
  line-height: 1.5;
}

/* ---------- 数据条 ---------- */
.page-products .pp-metrics {
  padding: 22px 0 4px;
}

.page-products .pp-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-products .pp-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 15px 16px;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-md);
  background: var(--pp-surface-soft);
}

.page-products .pp-stat__v {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.6rem, 5vw, 2.15rem);
  line-height: 1;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}

.page-products .pp-stat__l {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 章节头 ---------- */
.page-products .section {
  padding: 44px 0 0;
}

.page-products .section__head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: 22px;
}

.page-products .section__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}

.page-products .pp-head {
  min-width: 0;
}

.page-products .section__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.6vw, 2.4rem);
  line-height: 1.18;
  color: var(--paper);
}

.page-products .section__lede {
  max-width: 42rem;
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.85;
}

/* ---------- 抽屉与文件卡 ---------- */
.page-products .pp-drawer {
  display: grid;
  gap: 18px;
}

.page-products .pp-drawer__col {
  min-width: 0;
}

.page-products .pp-drawer__hint {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-products .pp-drawer__rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
}

.page-products .pp-drawer__tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-pill);
  background: var(--pp-surface-soft);
  color: var(--muted);
  font-family: inherit;
  font-size: 0.9375rem;
  line-height: 1.3;
  white-space: nowrap;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.page-products .pp-drawer__tab:hover {
  border-color: var(--orange);
  color: var(--paper);
}

.page-products .pp-drawer__tab:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

.page-products .pp-drawer__tab[aria-pressed="true"] {
  background: var(--neon);
  border-color: var(--neon);
  color: var(--neon-ink);
  font-weight: 700;
}

.page-products .pp-drawer__num {
  font-size: 0.8125rem;
  opacity: 0.85;
}

.page-products .pp-files {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  min-width: 0;
}

.page-products .pp-files [hidden] {
  display: none !important;
}

.page-products .pp-file {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 17px 17px 15px;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(18, 35, 63, 0.96), rgba(15, 31, 58, 0.82));
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .pp-file:hover {
  transform: translateY(-6px);
  border-color: var(--neon);
}

.page-products .pp-file__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.page-products .pp-file__badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border-radius: var(--radius-xs);
  background: rgba(53, 240, 138, 0.14);
  color: var(--neon);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.page-products .pp-file__size {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.page-products .pp-file__title {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-products .pp-file__text {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .pp-file__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--pp-line);
}

.page-products .pp-file__link {
  position: relative;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--neon);
  text-decoration: none;
}

.page-products .pp-file__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -3px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease);
}

.page-products .pp-file:hover .pp-file__link::after,
.page-products .pp-file__link:focus-visible::after {
  transform: scaleX(1);
}

.page-products .pp-file__link:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}

/* ---------- 旧版本专区 ---------- */
.page-products .pp-legacy__body {
  display: grid;
  gap: 22px;
  align-items: center;
}

.page-products .pp-legacy__p {
  margin: 0 0 18px;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--paper);
}

.page-products .pp-bullets {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .pp-bullets li {
  position: relative;
  padding-left: 22px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .pp-bullets li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.68em;
  width: 10px;
  height: 2px;
  border-radius: 2px;
  background: var(--neon);
}

.page-products .pp-legacy__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-800);
}

.page-products .pp-legacy__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-products .pp-legacy__caption {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 12px;
  margin: 0;
  padding: 7px 12px;
  border-radius: var(--radius-pill);
  background: rgba(5, 11, 22, 0.78);
  color: var(--paper);
  font-size: 0.8125rem;
  line-height: 1.5;
}

/* ---------- 客户端 ---------- */
.page-products .pp-clients__banner {
  margin: 0 0 16px;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-800);
}

.page-products .pp-clients__banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-products .pp-clients__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-products .pp-term {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 17px;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-md);
  background: var(--pp-surface-soft);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-products .pp-term:hover {
  transform: translateY(-6px);
  border-color: var(--orange);
}

.page-products .pp-term__os {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-products .pp-term__title {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-products .pp-term__text {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .pp-term__link {
  margin-top: auto;
  padding-top: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--neon);
  text-decoration: none;
}

.page-products .pp-term__link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .pp-term__link:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}

.page-products .pp-clients__note {
  margin: 16px 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .pp-clients__note a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 三步路径 ---------- */
.page-products .pp-steps__body {
  display: grid;
  gap: 22px;
  align-items: center;
}

.page-products .pp-chain {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-products .pp-chain__item {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 18px 17px;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(18, 35, 63, 0.94), rgba(15, 31, 58, 0.78));
}

.page-products .pp-chain__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--neon);
  border-radius: var(--radius-pill);
  background: var(--neon-soft);
  color: var(--neon);
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 700;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-products .pp-chain__item.is-in .pp-chain__num {
  background: var(--neon);
  color: var(--neon-ink);
}

.page-products .pp-chain__title {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-products .pp-chain__text {
  margin: 0 0 4px;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .pp-chain__item .btn {
  align-self: flex-start;
}

.page-products .pp-steps__figure {
  margin: 0;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-800);
}

.page-products .pp-steps__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* ---------- 文件信息与校验 ---------- */
.page-products .pp-check__body {
  display: grid;
  gap: 22px;
  align-items: center;
}

.page-products .pp-specs {
  margin: 0;
  border-top: 1px solid var(--pp-line);
}

.page-products .pp-specs > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 2px;
  border-bottom: 1px solid var(--pp-line);
}

.page-products .pp-specs dt {
  flex: 0 0 auto;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--paper);
}

.page-products .pp-specs dd {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--muted);
  text-align: right;
}

.page-products .pp-check__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.page-products .pp-check__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-800);
}

.page-products .pp-check__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 3;
  object-fit: cover;
}

.page-products .pp-check__caption {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 12px;
  margin: 0;
  padding: 7px 12px;
  border-radius: var(--radius-pill);
  background: rgba(5, 11, 22, 0.78);
  color: var(--paper);
  font-size: 0.8125rem;
  line-height: 1.5;
}

/* ---------- 归档节奏 ---------- */
.page-products .pp-cadence {
  padding-bottom: 8px;
}

.page-products .pp-cadence__band {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: 24px 20px;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(118deg, rgba(53, 240, 138, 0.12), rgba(255, 122, 47, 0.1) 58%, transparent 88%),
    var(--ink-800);
}

.page-products .pp-cadence__body {
  min-width: 0;
}

.page-products .pp-cadence__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  line-height: 1.25;
  color: var(--paper);
}

.page-products .pp-cadence__lede {
  margin: 0 0 16px;
  max-width: 40rem;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-products .pp-cadence__list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .pp-cadence__list li {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  border: 1px solid var(--pp-line);
  border-radius: var(--radius-md);
  background: rgba(10, 21, 38, 0.62);
}

.page-products .pp-cadence__k {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--orange);
}

.page-products .pp-cadence__v {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--paper);
}

.page-products .pp-cadence__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-products .pp-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 760px) {
  .page-products .pp-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
  }

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

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

@media (min-width: 880px) {
  .page-products .section__head {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 22px;
    align-items: start;
    margin-bottom: 26px;
  }

  .page-products .pp-legacy__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.88fr);
    gap: 34px;
  }

  .page-products .pp-cadence__band {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 22px;
    padding: 32px 30px;
  }
}

@media (min-width: 900px) {
  .page-products .pp-hero {
    padding: 30px 0 12px;
  }

  .page-products .pp-hero__inner {
    grid-template-columns: minmax(0, 1.22fr) minmax(0, 0.88fr);
    gap: 40px;
  }

  .page-products .pp-drawer {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }

  .page-products .pp-drawer__rail {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
    position: sticky;
    top: calc(var(--header-h-solid) + 20px);
  }

  .page-products .pp-drawer__tab {
    width: 100%;
    justify-content: flex-start;
    border-radius: var(--radius-md);
    white-space: normal;
  }

  .page-products .pp-check__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    gap: 34px;
  }
}

@media (min-width: 1000px) {
  .page-products .pp-clients__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .pp-steps__body {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    gap: 34px;
  }
}

@media (min-width: 1180px) {
  .page-products .pp-files {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-file,
  .page-products .pp-term,
  .page-products .pp-drawer__tab,
  .page-products .pp-file__link::after,
  .page-products .pp-chain__num {
    transition: none;
  }

  .page-products .pp-file:hover,
  .page-products .pp-term:hover {
    transform: none;
  }
}