.page-products {
  --prod-rule: #D9DEE3;
  --prod-rule-dark: #2C333B;
  --prod-ink-soft: #49515A;
  --prod-tint: rgba(46, 211, 206, 0.1);
  --prod-sticky-top: 6.5rem;
  background: var(--ink);
  color: var(--silver);
}

.page-products .prod-head {
  max-width: 62ch;
  margin-bottom: clamp(1.75rem, 4vw, 3rem);
}

.page-products .prod-head h2 {
  margin: 0.35rem 0 0.85rem;
  font-size: clamp(1.65rem, 3.4vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
  font-weight: 800;
  color: var(--mist);
}

.page-products .prod-head .lede {
  margin: 0;
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(1.75rem, 4vw, 3rem) clamp(3rem, 7vw, 5rem);
}

.page-products .prod-hero::after {
  content: "";
  position: absolute;
  inset: -20% -10% auto auto;
  width: min(760px, 80vw);
  height: min(760px, 80vw);
  background: radial-gradient(circle at 70% 30%, rgba(46, 211, 206, 0.14), transparent 62%);
  pointer-events: none;
}

.page-products .prod-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: end;
}

.page-products .prod-hero h1 {
  margin: 0.4rem 0 1.1rem;
  font-size: clamp(1.95rem, 4.8vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: -0.025em;
  font-weight: 800;
  color: var(--mist);
}

.page-products .prod-hero__lead .lede {
  margin: 0;
  max-width: 60ch;
}

.page-products .prod-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-products .prod-fact {
  background: var(--graphite);
  padding: 1.15rem 1rem;
}

.page-products .prod-fact__num {
  display: block;
  font-size: 1.75rem;
  line-height: 1;
  font-weight: 700;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-products .prod-fact__label {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--gray);
}

/* ---------- 系列总览 ---------- */
.page-products .prod-series__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(1rem, 2.2vw, 1.75rem);
  align-items: start;
}

.page-products .prod-scard {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.page-products .prod-scard__shot {
  overflow: hidden;
  background: var(--ink);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-products .prod-scard--tall .prod-scard__shot {
  aspect-ratio: 3 / 4;
}

.page-products .prod-scard--square .prod-scard__shot {
  aspect-ratio: 1 / 1;
}

.page-products .prod-scard--wide .prod-scard__shot {
  aspect-ratio: 4 / 3;
}

.page-products .prod-scard__shot img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-products .prod-scard__body {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.page-products .prod-scard__body h3 {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-products .prod-scard__body p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--silver);
}

.page-products .prod-scard__keys {
  list-style: none;
  margin: 0;
  padding: 0.65rem 0 0;
  border-top: 1px solid var(--prod-rule-dark);
  display: grid;
  gap: 0.3rem;
  font-size: 0.75rem;
  color: var(--cyan);
}

.page-products .prod-scard__count {
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  color: var(--gray);
}

.page-products .prod-series__grid .prod-scard:nth-child(2) {
  margin-top: clamp(1.25rem, 3.5vw, 3rem);
}

.page-products .prod-series__grid .prod-scard:nth-child(3) {
  margin-top: clamp(0.5rem, 1.6vw, 1.25rem);
}

.page-products .prod-series__grid .prod-scard:nth-child(4) {
  margin-top: clamp(2rem, 5vw, 4.5rem);
}

.page-products .prod-naming {
  margin-top: clamp(2.25rem, 5vw, 3.5rem);
  padding: clamp(1.4rem, 3vw, 2.25rem);
  background: var(--ink);
  border: 1px solid var(--prod-rule-dark);
}

.page-products .prod-naming h3 {
  margin: 0.4rem 0 0.7rem;
  font-family: var(--mono);
  font-size: clamp(1rem, 2vw, 1.35rem);
  letter-spacing: 0.01em;
  color: var(--cyan);
}

.page-products .prod-naming p {
  margin: 0;
  max-width: 78ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--silver);
}

/* ---------- 参数表 ---------- */
.page-products .prod-specs {
  background: var(--mist);
  color: var(--ink);
}

.page-products .prod-specs .prod-head h2 {
  color: var(--ink);
}

.page-products .prod-specs .prod-head .lede {
  color: var(--prod-ink-soft);
}

.page-products .prod-specs .eyebrow {
  color: var(--cyan-deep);
}

.page-products .prod-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
}

.page-products .prod-filter__btn {
  cursor: pointer;
  user-select: none;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--prod-rule);
  background: #FFFFFF;
  color: var(--prod-ink-soft);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: color 180ms var(--ease), background 180ms var(--ease), border-color 180ms var(--ease);
}

.page-products .prod-filter__btn:hover {
  border-color: var(--cyan);
  color: var(--cyan-deep);
}

.page-products #sf-all:checked ~ .prod-filter [for="sf-all"],
.page-products #sf-s:checked ~ .prod-filter [for="sf-s"],
.page-products #sf-p:checked ~ .prod-filter [for="sf-p"],
.page-products #sf-l:checked ~ .prod-filter [for="sf-l"],
.page-products #sf-a:checked ~ .prod-filter [for="sf-a"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #04191A;
}

.page-products #sf-all:focus-visible ~ .prod-filter [for="sf-all"],
.page-products #sf-s:focus-visible ~ .prod-filter [for="sf-s"],
.page-products #sf-p:focus-visible ~ .prod-filter [for="sf-p"],
.page-products #sf-l:focus-visible ~ .prod-filter [for="sf-l"],
.page-products #sf-a:focus-visible ~ .prod-filter [for="sf-a"] {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-products #sf-s:checked ~ .prod-filter-target .c-p,
.page-products #sf-s:checked ~ .prod-filter-target .c-l,
.page-products #sf-s:checked ~ .prod-filter-target .c-a,
.page-products #sf-p:checked ~ .prod-filter-target .c-s,
.page-products #sf-p:checked ~ .prod-filter-target .c-l,
.page-products #sf-p:checked ~ .prod-filter-target .c-a,
.page-products #sf-l:checked ~ .prod-filter-target .c-s,
.page-products #sf-l:checked ~ .prod-filter-target .c-p,
.page-products #sf-l:checked ~ .prod-filter-target .c-a,
.page-products #sf-a:checked ~ .prod-filter-target .c-s,
.page-products #sf-a:checked ~ .prod-filter-target .c-p,
.page-products #sf-a:checked ~ .prod-filter-target .c-l {
  display: none;
}

.page-products .prod-specs__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.page-products .prod-index {
  position: static;
}

.page-products .prod-index__title {
  margin: 0 0 0.6rem;
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-products .prod-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.page-products .prod-index__list a {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.85rem;
  font-size: 0.875rem;
  color: var(--prod-ink-soft);
  text-decoration: none;
  border: 1px solid var(--prod-rule);
  background: #FFFFFF;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-products .prod-index__list a:hover {
  border-color: var(--cyan);
  background: var(--prod-tint);
  color: var(--cyan-deep);
}

.page-products .prod-index__note {
  margin: 0.9rem 0 0;
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--gray);
}

.page-products .prod-tables {
  display: grid;
  gap: clamp(2.25rem, 5vw, 3.5rem);
  min-width: 0;
}

.page-products .prod-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1rem;
  margin-bottom: 1rem;
}

.page-products .prod-group__head h3 {
  margin: 0;
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-products .prod-group__head .eyebrow {
  flex: 0 0 100%;
  margin: 0;
}

.page-products .prod-group__meta {
  margin: 0;
  margin-left: auto;
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--gray);
}

.page-products .prod-table-wrap {
  border-top: 2px solid var(--cyan);
}

.page-products .spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  table-layout: auto;
}

.page-products .spec-table thead th {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  font-weight: 500;
  color: var(--cyan-deep);
  text-align: left;
  padding: 0.7rem 0.75rem;
  border-bottom: 1px solid var(--prod-rule);
  white-space: nowrap;
}

.page-products .spec-table tbody th[scope="row"] {
  font-weight: 600;
  color: var(--ink);
  text-align: left;
  padding: 0.8rem 0.75rem;
  border-bottom: 1px solid var(--prod-rule);
  vertical-align: top;
}

.page-products .spec-table tbody td {
  padding: 0.8rem 0.75rem;
  border-bottom: 1px solid var(--prod-rule);
  color: var(--prod-ink-soft);
  vertical-align: top;
  font-variant-numeric: tabular-nums;
}

.page-products .spec-table tbody tr {
  transition: background 140ms var(--ease);
}

.page-products .spec-table tbody tr:hover {
  background: var(--prod-tint);
}

.page-products .spec-table tbody tr:hover th[scope="row"] {
  color: var(--cyan-deep);
}

/* ---------- 选型建议 ---------- */
.page-products .prod-picks__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 2rem);
  align-items: start;
}

.page-products .prod-pick {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  padding: 1.9rem 1.5rem 1.5rem;
  background: var(--graphite);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
}

.page-products .prod-pick::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 46%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.page-products .prod-pick:nth-child(2) {
  margin-top: 1.25rem;
}

.page-products .prod-pick:nth-child(3) {
  margin-top: 2.5rem;
}

.page-products .prod-pick__scene {
  margin: 0;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--gray);
}

.page-products .prod-pick h3 {
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.45;
  font-weight: 800;
  color: var(--mist);
}

.page-products .prod-pick p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--silver);
}

.page-products .prod-pick .btn {
  margin-top: auto;
  align-self: flex-start;
}

.page-products .prod-picks__fallback {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-size: 0.875rem;
  line-height: 1.8;
  max-width: 68ch;
  color: var(--gray);
}

/* ---------- 下单流程 ---------- */
.page-products .prod-order__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3.5rem);
  align-items: start;
}

.page-products .prod-order__intro h2 {
  margin: 0.35rem 0 1rem;
  font-size: clamp(1.5rem, 3.2vw, 2.25rem);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--mist);
}

.page-products .prod-order__intro p {
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--silver);
  max-width: 46ch;
}

.page-products .prod-order__intro .mono {
  color: var(--cyan);
}

.page-products .prod-order__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  counter-reset: none;
}

.page-products .prod-step {
  display: grid;
  grid-template-columns: 3.25rem minmax(0, 1fr);
  gap: 0.9rem;
  padding: 1.15rem 0;
  border-top: 1px solid var(--prod-rule-dark);
}

.page-products .prod-step:last-child {
  border-bottom: 1px solid var(--prod-rule-dark);
}

.page-products .prod-step__num {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8125rem;
  color: var(--orange);
  padding-top: 0.15rem;
}

.page-products .prod-step__num::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  flex: none;
}

.page-products .prod-step__body h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--mist);
}

.page-products .prod-step__body p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--silver);
}

/* ---------- 批次 ---------- */
.page-products .prod-batch__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3.5rem);
  align-items: center;
}

.page-products .prod-batch__media {
  position: relative;
  overflow: hidden;
  background: var(--graphite);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-products .prod-batch__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .prod-batch__media .media__cap {
  display: block;
  padding: 0.7rem 0.9rem;
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--gray);
  background: var(--ink);
}

.page-products .prod-batch__body h2 {
  margin: 0.35rem 0 1rem;
  font-size: clamp(1.5rem, 3.2vw, 2.25rem);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--mist);
}

.page-products .prod-batch__body .lede {
  margin: 0 0 1.35rem;
}

.page-products .prod-batch__list {
  list-style: none;
  margin: 0 0 1.35rem;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.page-products .prod-batch__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  align-items: start;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--line);
}

.page-products .prod-batch__list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-products .prod-batch__list p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--silver);
}

.page-products .prod-batch__body > p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--gray);
}

.page-products .prod-batch__body > p a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .prod-batch__body > p a:hover {
  color: var(--mist);
}

/* ---------- 尾段联络 ---------- */
.page-products .prod-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  align-items: center;
  padding: clamp(1.6rem, 3.5vw, 2.75rem);
  background: var(--graphite);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
}

.page-products .prod-cta__inner h2 {
  margin: 0 0 0.6rem;
  font-size: clamp(1.35rem, 2.8vw, 1.9rem);
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--mist);
}

.page-products .prod-cta__inner p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--silver);
  max-width: 56ch;
}

.page-products .prod-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .page-products .prod-series__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .prod-series__grid .prod-scard:nth-child(3) {
    margin-top: 0;
  }

  .page-products .prod-picks__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-products .prod-pick:nth-child(2) {
    margin-top: 0;
  }

  .page-products .prod-pick:nth-child(3) {
    margin-top: 0;
  }
}

@media (min-width: 900px) {
  .page-products .prod-hero__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  }

  .page-products .prod-specs__layout {
    grid-template-columns: minmax(0, 190px) minmax(0, 1fr);
    gap: clamp(1.75rem, 3.5vw, 3rem);
  }

  .page-products .prod-index {
    position: sticky;
    top: var(--prod-sticky-top);
    align-self: start;
  }

  .page-products .prod-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
  }

  .page-products .prod-index__list a {
    display: flex;
    border: 0;
    border-left: 2px solid transparent;
    background: transparent;
    padding: 0.55rem 0.75rem;
  }

  .page-products .prod-index__list a:hover {
    border-left-color: var(--cyan);
    background: var(--prod-tint);
  }

  .page-products .prod-order__layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

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

  .page-products .prod-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

@media (max-width: 720px) {
  .page-products .prod-series__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-products .prod-series__grid .prod-scard:nth-child(2),
  .page-products .prod-series__grid .prod-scard:nth-child(4) {
    margin-top: 0;
  }

  .page-products .prod-step {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.4rem;
  }

  .page-products .prod-table-wrap {
    border-top-width: 2px;
  }

  .page-products .spec-table thead {
    display: none;
  }

  .page-products .spec-table,
  .page-products .spec-table tbody,
  .page-products .spec-table tr,
  .page-products .spec-table th,
  .page-products .spec-table td {
    display: block;
    width: 100%;
  }

  .page-products .spec-table tbody tr {
    padding: 0.9rem 0;
    border-bottom: 1px solid var(--prod-rule);
  }

  .page-products .spec-table tbody tr:hover {
    background: transparent;
  }

  .page-products .spec-table tbody th[scope="row"] {
    padding: 0 0 0.5rem;
    border-bottom: 0;
    font-size: 0.9375rem;
  }

  .page-products .spec-table tbody td {
    display: flex;
    gap: 0.75rem;
    align-items: baseline;
    padding: 0.22rem 0;
    border-bottom: 0;
  }

  .page-products .spec-table tbody td::before {
    content: attr(data-label);
    flex: 0 0 5.75rem;
    font-family: var(--mono);
    font-size: 0.6875rem;
    letter-spacing: 0.04em;
    color: var(--gray);
  }

  .page-products .prod-batch__list li {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.45rem;
  }

  .page-products .prod-pick {
    padding: 1.6rem 1.25rem 1.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products * {
    transition-duration: 0.01ms !important;
  }
}