.page-products {
  --pdp-body: rgba(242, 239, 231, .78);
  --pdp-dim: rgba(159, 179, 192, .92);
  --pdp-hair: rgba(159, 179, 192, .2);
  --pdp-hair-light: rgba(242, 239, 231, .14);
  background: var(--ink-900);
  color: var(--ivory);
  overflow-x: hidden;
}

.page-products > section {
  padding-block: clamp(2.75rem, 7vw, 5.5rem);
}

.page-products .pdp-hero {
  padding-block: clamp(1.75rem, 5vw, 3.5rem) clamp(1.5rem, 4vw, 3rem);
}

.page-products .pdp-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 5vw, 3.5rem);
  align-items: center;
}

.page-products .pdp-hero h1 {
  margin: .55rem 0 0;
  font-size: clamp(2rem, 6.4vw, 4.1rem);
  line-height: 1.08;
  letter-spacing: -.022em;
  font-weight: 900;
}

.page-products .pdp-lead {
  margin: 1.2rem 0 0;
  max-width: 46ch;
  font-size: clamp(1rem, 2.1vw, 1.2rem);
  line-height: 1.82;
  color: var(--pdp-body);
}

.page-products .pdp-lead .num-pop {
  color: var(--gold-soft);
}

.page-products .pdp-hero__actions {
  margin-top: 1.75rem;
}

.page-products .pdp-hero__media {
  margin: 0;
}

.page-products .pdp-section-head {
  max-width: 64ch;
}

.page-products .pdp-section-head h2 {
  margin: .5rem 0 0;
  font-size: clamp(1.55rem, 4.3vw, 2.65rem);
  line-height: 1.16;
  letter-spacing: -.015em;
  font-weight: 900;
}

.page-products .pdp-section-sub {
  margin: .9rem 0 0;
  max-width: 60ch;
  font-size: clamp(.97rem, 1.9vw, 1.05rem);
  line-height: 1.8;
  color: var(--pdp-body);
}

/* ---------- 版本矩阵 ---------- */

.page-products .pdp-versions__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 4vw, 3rem);
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

.page-products .pdp-matrix-wrap {
  overflow-x: auto;
  overscroll-behavior-x: contain;
  border-top: 1px solid var(--line-gold);
  border-bottom: 1px solid var(--pdp-hair);
}

.page-products .pdp-matrix {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: .95rem;
}

.page-products .pdp-matrix th,
.page-products .pdp-matrix td {
  padding: 1.05rem 1.1rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--pdp-hair);
}

.page-products .pdp-matrix tbody tr:last-child th,
.page-products .pdp-matrix tbody tr:last-child td {
  border-bottom: 0;
}

.page-products .pdp-matrix thead th {
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 700;
  border-bottom-color: var(--line-gold);
  white-space: nowrap;
}

.page-products .pdp-matrix tbody tr {
  transition: background-color .18s var(--ease);
}

.page-products .pdp-matrix tbody tr:hover,
.page-products .pdp-matrix tbody tr:focus-within {
  background-color: rgba(30, 95, 122, .24);
}

.page-products .pdp-matrix tbody th {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--ivory);
  white-space: nowrap;
  letter-spacing: .02em;
}

.page-products .pdp-matrix tbody td {
  color: var(--pdp-body);
  line-height: 1.7;
}

.page-products .pdp-req-card {
  padding: clamp(1.1rem, 3vw, 1.6rem);
  border: 1px solid var(--pdp-hair);
  border-radius: var(--radius-lg);
  background: linear-gradient(158deg, rgba(30, 95, 122, .3) 0%, rgba(6, 18, 31, .92) 68%);
}

.page-products .pdp-req-card__media {
  margin: 0 0 1.15rem;
}

.page-products .pdp-req-card h3 {
  margin: 0 0 .9rem;
  font-size: clamp(1.1rem, 2.6vw, 1.3rem);
  line-height: 1.35;
  font-weight: 900;
}

.page-products .pdp-reqs {
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: .85rem;
}

.page-products .pdp-reqs li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: .78rem 0;
  border-bottom: 1px dashed var(--pdp-hair);
}

.page-products .pdp-reqs li:last-child {
  border-bottom: 0;
}

.page-products .pdp-reqs__k {
  color: var(--mist);
  letter-spacing: .05em;
}

.page-products .pdp-reqs__v {
  color: var(--gold-soft);
  font-weight: 700;
  text-align: right;
}

.page-products .pdp-req-card__tip {
  margin: 1.1rem 0 0;
  font-size: .88rem;
  line-height: 1.75;
  color: var(--pdp-dim);
}

.page-products .pdp-req-card__tip a {
  color: var(--gold-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 安装步骤 ---------- */

.page-products .pdp-install__media {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
}

.page-products .pdp-steps {
  margin: clamp(1.5rem, 3.5vw, 2.25rem) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.4rem);
}

.page-products .pdp-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .35rem 1.1rem;
  padding-top: 1.55rem;
  border-top: 1px solid var(--pdp-hair);
}

.page-products .pdp-step__num {
  font-family: var(--font-serif);
  font-size: clamp(2.6rem, 7vw, 4.2rem);
  font-weight: 900;
  line-height: .82;
  color: var(--gold);
  letter-spacing: -.03em;
}

.page-products .pdp-step__main {
  min-width: 0;
}

.page-products .pdp-step__title {
  margin: 0 0 .55rem;
  font-size: clamp(1.1rem, 2.5vw, 1.42rem);
  line-height: 1.35;
  font-weight: 900;
}

.page-products .pdp-step__body {
  margin: 0;
  max-width: 64ch;
  line-height: 1.82;
  color: var(--pdp-body);
}

.page-products .pdp-step__disclosure {
  margin-top: .9rem;
}

.page-products .pdp-step__disclosure .disclosure__body p {
  margin: 0;
  color: var(--pdp-dim);
  line-height: 1.78;
}

/* ---------- 六类服务 ---------- */

.page-products .pdp-service-list {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-products .pdp-service {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .35rem 1.15rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--pdp-hair-light);
}

.page-products .pdp-service:first-child {
  border-top: 1px solid var(--pdp-hair-light);
}

.page-products .pdp-service__idx {
  font-family: var(--font-serif);
  font-size: 1.02rem;
  font-weight: 900;
  line-height: 1.5;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-products .pdp-service__name {
  margin: 0 0 .35rem;
  font-size: clamp(1.05rem, 2.3vw, 1.2rem);
  line-height: 1.35;
  font-weight: 900;
}

.page-products .pdp-service__desc {
  margin: 0;
  max-width: 68ch;
  font-size: .97rem;
  line-height: 1.8;
  color: var(--pdp-body);
}

/* ---------- 记录订阅 ---------- */

.page-products .pdp-recall__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: center;
}

.page-products .pdp-recall__copy h2 {
  margin: .5rem 0 0;
  font-size: clamp(1.55rem, 4.3vw, 2.65rem);
  line-height: 1.16;
  letter-spacing: -.015em;
  font-weight: 900;
}

.page-products .pdp-recall__copy p {
  margin: 1.1rem 0 0;
  max-width: 56ch;
  line-height: 1.82;
  color: var(--pdp-body);
}

.page-products .pdp-recall__media {
  margin: 0;
}

/* ---------- iOS 校验 ---------- */

.page-products .pdp-ios__media {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
}

.page-products .pdp-ios-steps {
  margin: clamp(1.5rem, 3.5vw, 2.25rem) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: clamp(1.4rem, 3vw, 2rem);
}

.page-products .pdp-ios-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .3rem 1.1rem;
  padding-bottom: 1.4rem;
  border-bottom: 1px solid var(--pdp-hair);
}

.page-products .pdp-ios-step__num {
  font-family: var(--font-serif);
  font-size: clamp(2.6rem, 7vw, 4.2rem);
  font-weight: 900;
  line-height: .82;
  color: var(--gold);
  letter-spacing: -.03em;
}

.page-products .pdp-ios-step__title {
  margin: 0 0 .5rem;
  font-size: clamp(1.08rem, 2.4vw, 1.36rem);
  line-height: 1.35;
  font-weight: 900;
}

.page-products .pdp-ios-step__body {
  margin: 0;
  max-width: 64ch;
  line-height: 1.82;
  color: var(--pdp-body);
}

.page-products .pdp-flow {
  display: block;
  width: 100%;
  height: auto;
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
}

.page-products .pdp-ios-note {
  margin-top: clamp(1.5rem, 3.5vw, 2.25rem);
}

.page-products .pdp-ios-note h3 {
  margin: 0 0 .85rem;
  font-size: 1.08rem;
  font-weight: 900;
}

.page-products .pdp-ios-note ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .7rem;
}

.page-products .pdp-ios-note li {
  position: relative;
  padding-left: 1.15rem;
  line-height: 1.78;
  font-size: .95rem;
  color: var(--pdp-body);
}

.page-products .pdp-ios-note li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: .55rem;
  height: 2px;
  background: var(--gold);
}

.page-products .pdp-ios-note a {
  color: var(--gold-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 记录管理 ---------- */

.page-products .pdp-records__list {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  display: grid;
  gap: 0;
}

.page-products .pdp-record {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .35rem 1.15rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--pdp-hair);
}

.page-products .pdp-record:first-child {
  border-top: 1px solid var(--line-gold);
}

.page-products .pdp-record__idx {
  font-family: var(--font-serif);
  font-size: 1.02rem;
  font-weight: 900;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-products .pdp-record h3 {
  margin: 0 0 .45rem;
  font-size: clamp(1.05rem, 2.3vw, 1.22rem);
  line-height: 1.35;
  font-weight: 900;
}

.page-products .pdp-record p {
  margin: 0;
  max-width: 68ch;
  line-height: 1.82;
  color: var(--pdp-body);
}

/* ---------- 故障与联系 ---------- */

.page-products .pdp-help__list {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .9rem;
}

.page-products .pdp-help__list li {
  position: relative;
  padding-left: 1.25rem;
  max-width: 74ch;
  line-height: 1.8;
  color: var(--pdp-body);
}

.page-products .pdp-help__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: .6rem;
  height: 2px;
  background: var(--cinnabar);
}

.page-products .pdp-help__actions {
  margin-top: clamp(1.5rem, 3.5vw, 2.25rem);
  display: flex;
  flex-wrap: wrap;
  gap: .85rem;
}

.page-products .pdp-help__note {
  margin: 1.5rem 0 0;
  max-width: 72ch;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--pdp-dim);
}

.page-products .pdp-help__note a {
  color: var(--gold-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-products .pdp-service {
    grid-template-columns: 3.5rem minmax(0, 1fr);
    align-items: start;
  }

  .page-products .pdp-service__idx {
    text-align: right;
    padding-right: .2rem;
  }

  .page-products .pdp-record {
    grid-template-columns: 4rem minmax(0, 1fr);
    align-items: start;
  }

  .page-products .pdp-record__idx {
    text-align: right;
    padding-right: .2rem;
  }
}

@media (min-width: 900px) {
  .page-products .pdp-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }

  .page-products .pdp-recall__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }

  .page-products .pdp-ios-note {
    max-width: 760px;
  }
}

@media (min-width: 980px) {
  .page-products .pdp-versions__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-products .pdp-req-card {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }
}

@media (max-width: 520px) {
  .page-products .pdp-matrix {
    min-width: 560px;
    font-size: .88rem;
  }

  .page-products .pdp-matrix th,
  .page-products .pdp-matrix td {
    padding: .85rem .8rem;
  }

  .page-products .pdp-help__actions .btn {
    width: 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pdp-matrix tbody tr {
    transition: none;
  }
}