.page-products {
  --pd-gutter: clamp(16px, 4vw, 40px);
  background: var(--obsidian);
  color: var(--paper);
}

/* ---------- 首屏框景 ---------- */
.page-products .pd-hero {
  position: relative;
  padding: clamp(58px, 8vw, 104px) 0 clamp(36px, 5vw, 60px);
  background:
    radial-gradient(120% 90% at 12% 0%, rgba(217, 164, 65, .13), rgba(11, 14, 19, 0) 58%),
    var(--obsidian);
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-products .pd-hero::before {
  content: "";
  position: absolute;
  left: var(--pd-gutter);
  right: var(--pd-gutter);
  top: 22px;
  height: 1px;
  background: linear-gradient(90deg, rgba(217, 164, 65, 0), var(--amber) 14%, var(--amber) 86%, rgba(217, 164, 65, 0));
  opacity: .55;
  pointer-events: none;
}

.page-products .pd-hero::after {
  content: "";
  position: absolute;
  left: var(--pd-gutter);
  right: var(--pd-gutter);
  top: 32px;
  height: 7px;
  background-image: repeating-linear-gradient(90deg, var(--ink-line) 0 1px, transparent 1px 26px);
  opacity: .85;
  pointer-events: none;
}

.page-products .pd-hero__title {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 5.4vw, 50px);
  line-height: 1.2;
  letter-spacing: .01em;
  color: var(--paper);
  max-width: 22em;
}

.page-products .pd-hero__lede {
  margin: 20px 0 0;
  max-width: 44em;
}

.page-products .pd-hero__facts {
  list-style: none;
  margin: 34px 0 0;
  padding: 1px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-products .pd-hero__fact {
  background: var(--carbon);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-products .pd-hero__fact-key {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
}

.page-products .pd-hero__fact-val {
  font-size: 20px;
  color: var(--gold);
  letter-spacing: .04em;
}

/* ---------- 主体骨架 ---------- */
.page-products .pd-body {
  padding-top: clamp(36px, 5vw, 64px);
  padding-bottom: clamp(56px, 8vw, 104px);
}

/* ---------- 侧栏目录 ---------- */
.page-products .pd-index {
  border: 1px solid var(--line-soft);
  background: var(--carbon);
  padding: 16px 14px 14px;
}

.page-products .pd-index__head {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--amber);
  text-transform: uppercase;
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 10px;
}

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

.page-products .pd-index__link {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  align-items: baseline;
  gap: 8px;
  padding: 9px 8px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--mist);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}

.page-products .pd-index__link:hover,
.page-products .pd-index__link:focus-visible {
  color: var(--paper);
  border-left-color: var(--amber);
  background: rgba(217, 164, 65, .07);
}

.page-products .pd-index__link.is-active {
  color: var(--gold);
  border-left-color: var(--gold);
}

.page-products .pd-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--amber);
}

/* ---------- 章节 ---------- */
.page-products .pd-section {
  padding: clamp(38px, 5vw, 60px) 0;
  border-top: 1px solid var(--line-soft);
}

.page-products .pd-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-products .pd-p {
  margin: 0 0 8px;
  color: rgba(244, 241, 234, .88);
  line-height: 1.85;
}

.page-products .pd-note {
  margin: 18px 0 0;
  font-size: 14px;
  color: var(--mist);
  line-height: 1.75;
}

.page-products .pd-figure {
  margin: clamp(22px, 3vw, 32px) 0 0;
}

.page-products .pd-figure .figure__frame {
  border: 1px solid var(--line-soft);
  background: var(--carbon);
}

.page-products .pd-figure .figure__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .pd-figure--phone {
  margin-top: 0;
  max-width: 320px;
}

/* ---------- 设备 ---------- */
.page-products .pd-devices {
  list-style: none;
  margin: 30px 0 0;
  padding: 1px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-products .pd-device {
  background: var(--carbon);
  padding: 20px;
}

.page-products .pd-device__name {
  margin: 12px 0 8px;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 20px;
  color: var(--paper);
}

.page-products .pd-device__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 功能类别 ---------- */
.page-products .pd-cats {
  margin: 30px 0 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-products .pd-cat {
  position: relative;
  border: 1px solid var(--line-soft);
  background: var(--carbon);
  padding: 22px 20px 20px;
  transition: border-color .18s ease, transform .18s ease;
}

.page-products .pd-cat:hover {
  border-color: var(--amber);
  transform: translateY(-2px);
}

.page-products .pd-cat__idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--amber);
}

.page-products .pd-cat__name {
  margin: 10px 0 8px;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 19px;
  color: var(--paper);
}

.page-products .pd-cat__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 对照表 ---------- */
.page-products .pd-compare {
  margin-top: 26px;
  border: 1px solid var(--line-soft);
}

.page-products .pd-compare .data-table {
  min-width: 700px;
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.page-products .pd-compare__cap {
  caption-side: top;
  text-align: left;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
  background: var(--grayblue);
  border-bottom: 1px solid var(--line-soft);
}

.page-products .pd-compare thead th {
  background: var(--rice);
  color: var(--obsidian);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--ink-line);
  white-space: nowrap;
}

.page-products .pd-compare tbody th,
.page-products .pd-compare tbody td {
  padding: 12px 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--line-soft);
  white-space: nowrap;
}

.page-products .pd-compare tbody th {
  font-weight: 500;
  color: var(--paper);
  background: var(--grayblue);
}

.page-products .pd-compare tbody td {
  color: var(--mist);
  background: var(--carbon);
}

.page-products .pd-compare thead th:first-child,
.page-products .pd-compare tbody th:first-child {
  position: sticky;
  left: 0;
  z-index: 2;
  border-right: 1px solid var(--ink-line);
}

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

.page-products .pd-mark {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
}

.page-products .pd-mark--yes {
  color: var(--celadon);
}

.page-products .pd-mark--no {
  color: var(--mist);
  opacity: .7;
}

/* ---------- 移动端路径 ---------- */
.page-products .pd-path {
  margin-top: 28px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

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

.page-products .pd-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  background: var(--carbon);
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--amber);
}

.page-products .pd-step__num {
  font-size: 22px;
  line-height: 1.1;
  color: var(--gold);
}

.page-products .pd-step__name {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 18px;
  color: var(--paper);
}

.page-products .pd-step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-products .pd-bars {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
  display: grid;
  gap: 14px;
}

.page-products .pd-bar {
  display: grid;
  grid-template-columns: 66px minmax(0, 1fr) 46px;
  align-items: center;
  gap: 12px;
}

.page-products .pd-bar__label {
  font-size: 13px;
  color: var(--mist);
}

.page-products .pd-bar__track {
  display: flex;
  gap: 5px;
}

.page-products .pd-bar__seg {
  display: block;
  width: 26px;
  height: 14px;
  background: var(--grayblue);
  border: 1px solid var(--line-soft);
}

.page-products .pd-bar--mobile .pd-bar__seg {
  background: rgba(79, 181, 154, .26);
  border-color: var(--celadon);
}

.page-products .pd-bar__val {
  font-size: 13px;
  color: var(--gold);
  text-align: right;
}

/* ---------- 版本号 ---------- */
.page-products .pd-vernum {
  margin: 26px 0 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
  font-size: clamp(44px, 9vw, 76px);
  line-height: 1;
  color: var(--gold);
  letter-spacing: .02em;
}

.page-products .pd-vernum__seg {
  padding: 2px 10px;
  border: 1px solid rgba(217, 164, 65, .45);
  background: rgba(217, 164, 65, .06);
}

.page-products .pd-vernum__dot {
  color: var(--mist);
}

.page-products .pd-seg-list {
  margin-top: 24px;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-products .pd-seg {
  background: var(--carbon);
}

.page-products .pd-seg .disclosure__summary {
  padding: 14px 18px;
  font-size: 15px;
  color: var(--paper);
  cursor: pointer;
}

.page-products .pd-seg .disclosure__body {
  padding: 0 18px 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-products .pd-seg .disclosure__body p {
  margin: 0;
}

.page-products .link-underline {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 217, 138, .5);
  padding-bottom: 1px;
  transition: border-color .18s ease, color .18s ease;
}

.page-products .link-underline:hover,
.page-products .link-underline:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* ---------- 兼容提示与节奏 ---------- */
.page-products .pd-alert {
  margin-top: 24px;
  padding: 18px 20px;
  background: rgba(240, 122, 52, .08);
  border: 1px solid rgba(240, 122, 52, .35);
  border-left: 2px solid var(--signal);
}

.page-products .pd-alert__title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--signal);
}

.page-products .pd-alert__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 241, 234, .9);
}

.page-products .pd-cadence {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-products .pd-cadence__item {
  background: var(--carbon);
  padding: 14px 18px;
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
}

.page-products .pd-cadence__key {
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--amber);
}

.page-products .pd-cadence__val {
  font-size: 15px;
  color: var(--mist);
  line-height: 1.7;
}

/* ---------- 咨询 ---------- */
.page-products .pd-connect {
  margin-top: 28px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-products .pd-connect__col {
  background: var(--carbon);
  padding: 24px 20px;
}

.page-products .pd-connect__title {
  margin: 12px 0 10px;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 20px;
  color: var(--paper);
}

.page-products .pd-connect__text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-products .pd-connect__meta {
  margin: 0;
  font-size: 14px;
  color: var(--mist);
}

.page-products .pd-contact {
  margin-top: 20px;
  padding: 18px 20px;
  border: 1px solid var(--line-soft);
  background: var(--grayblue);
  display: grid;
  gap: 10px;
}

.page-products .pd-contact__line {
  margin: 0;
  font-size: 14px;
  color: var(--mist);
}

.page-products .pd-contact__line .mono {
  color: var(--gold);
  margin-left: 6px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-products .pd-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .pd-cats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

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

  .page-products .pd-bar__seg {
    width: 32px;
  }
}

@media (min-width: 860px) {
  .page-products .pd-path {
    grid-template-columns: minmax(220px, 300px) minmax(0, 1fr);
    align-items: start;
    gap: clamp(24px, 4vw, 44px);
  }

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

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

  .page-products .pd-cadence__item {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

@media (min-width: 1024px) {
  .page-products .pd-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-products .pd-index__list {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .page-products .pd-index__link {
    padding: 10px 10px;
  }
}

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

@media (prefers-reduced-motion: reduce) {
  .page-products .pd-cat,
  .page-products .pd-index__link,
  .page-products .link-underline {
    transition: none;
  }

  .page-products .pd-cat:hover {
    transform: none;
  }
}