.page-products {
  --prod-cut: 16px;
  --prod-pad: clamp(3rem, 6vw, 5.25rem);
}

.page-products section {
  padding: var(--prod-pad) 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-products section:last-of-type {
  border-bottom: 0;
}

/* ============ 首屏 ============ */
.page-products .products-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2rem, 5vw, 3.75rem) 0 clamp(2.5rem, 6vw, 4.5rem);
  border-bottom: 1px solid var(--line-gold);
  background:
    radial-gradient(circle at 84% 22%, var(--glow-royal), transparent 58%),
    linear-gradient(158deg, var(--c-night) 0%, var(--c-ink) 68%);
}

.page-products .products-hero__grid {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.page-products .products-hero__title {
  margin: 0.75rem 0 1.25rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 6vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.012em;
  color: var(--c-cream);
}

.page-products .products-hero__lede {
  max-width: 60ch;
  color: var(--c-mute);
}

.page-products .products-hero__crest {
  max-width: 220px;
  margin: 0 auto;
  opacity: 0.92;
}

.page-products .products-hero__crest svg {
  display: block;
  width: 100%;
  height: auto;
}

@media (min-width: 900px) {
  .page-products .products-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.7fr);
    gap: clamp(2rem, 5vw, 4.5rem);
    align-items: end;
  }
  .page-products .products-hero__crest {
    margin: 0 0 0.5rem auto;
  }
}

/* ============ 对照表 ============ */
.page-products .compare-figure {
  margin: clamp(1.75rem, 4vw, 2.75rem) 0 clamp(1.75rem, 4vw, 2.5rem);
}

.page-products .compare-tabs {
  position: relative;
  margin-top: clamp(1.25rem, 3vw, 2rem);
}

.page-products .compare-picker {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-products .compare-tabs__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.page-products .compare-tabs__hint {
  margin-right: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-mute);
}

.page-products .compare-tab {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1.15rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--c-mute);
  background: rgba(26, 14, 42, 0.6);
  border: 1px solid var(--line-soft);
  cursor: pointer;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .compare-tab:hover {
  color: var(--c-cream);
  border-color: var(--line-gold);
}

.page-products #col-pick-v3:checked ~ .compare-tabs__row label[for="col-pick-v3"],
.page-products #col-pick-classic:checked ~ .compare-tabs__row label[for="col-pick-classic"] {
  color: var(--c-ink);
  background: var(--c-gold);
  border-color: var(--c-gold);
}

.page-products .compare-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line-gold);
  background: linear-gradient(180deg, var(--c-night) 0%, var(--c-ink) 100%);
  -webkit-overflow-scrolling: touch;
}

.page-products .compare-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.page-products .compare-table th,
.page-products .compare-table td {
  padding: 1rem 1.125rem;
  text-align: left;
  vertical-align: top;
  line-height: 1.65;
  border-bottom: 1px solid var(--line-soft);
}

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

.page-products .compare-table thead th {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-gold);
  background: rgba(91, 42, 134, 0.18);
  border-bottom-color: var(--line-gold);
}

.page-products .compare-table tbody th {
  width: 22%;
  white-space: nowrap;
  font-size: 0.8125rem;
  letter-spacing: 0.05em;
  color: var(--c-cream);
  font-weight: 500;
}

.page-products .compare-table td {
  color: var(--c-mute);
}

.page-products .compare-table__v3,
.page-products .compare-table__classic {
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-products #col-pick-v3:checked ~ .compare-table-wrap .compare-table td.compare-table__v3,
.page-products #col-pick-classic:checked ~ .compare-table-wrap .compare-table td.compare-table__classic {
  color: var(--c-cream);
  background: rgba(91, 42, 134, 0.3);
  box-shadow: inset 2px 0 0 var(--c-gold), inset -2px 0 0 var(--c-gold);
}

.page-products #col-pick-v3:checked ~ .compare-table-wrap .compare-table thead th.compare-table__v3,
.page-products #col-pick-classic:checked ~ .compare-table-wrap .compare-table thead th.compare-table__classic {
  background: rgba(91, 42, 134, 0.55);
}

/* ============ 功能模块 ============ */
.page-products .modules-grid {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.page-products .modules-grid__img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line-gold);
  background: var(--c-night);
}

.page-products .modules-grid__body h2 {
  margin: 0.6rem 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.6vw, 2.15rem);
  line-height: 1.2;
  color: var(--c-cream);
}

.page-products .modules-grid__body .lede {
  color: var(--c-mute);
  max-width: 58ch;
}

.page-products .module-list {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-products .module-list li {
  padding-left: 1.25rem;
  position: relative;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--c-mute);
}

.page-products .module-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 8px;
  height: 1px;
  background: var(--c-gold);
}

.page-products .module-list__key {
  color: var(--c-cream);
  font-weight: 600;
  margin-right: 0.5rem;
}

@media (min-width: 900px) {
  .page-products .modules-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: clamp(2rem, 5vw, 4rem);
    align-items: start;
  }
  .page-products .modules-grid__visual {
    margin-top: 2rem;
  }
}

/* ============ 客户端 ============ */
.page-products .clients-figure {
  margin: clamp(1.75rem, 4vw, 2.75rem) 0 clamp(2rem, 4vw, 3rem);
}

.page-products .clients-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

.page-products .client-card {
  position: relative;
  padding: 1.25rem 1.25rem 1.5rem;
  background: linear-gradient(180deg, rgba(26, 14, 42, 0.85), rgba(14, 14, 18, 0.95));
  border: 1px solid var(--line-soft);
  clip-path: polygon(0 0, calc(100% - var(--prod-cut)) 0, 100% var(--prod-cut), 100% 100%, var(--prod-cut) 100%, 0 calc(100% - var(--prod-cut)));
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-products .client-card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 42px;
  height: 2px;
  background: var(--c-gold);
}

.page-products .client-card:hover {
  border-color: rgba(201, 162, 39, 0.55);
}

.page-products .client-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--line-soft);
}

.page-products .client-card__platform {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--c-cream);
  letter-spacing: 0.01em;
}

.page-products .client-card__code {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--c-gold);
}

.page-products .client-card__spec {
  margin: 0 0 0.6rem;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--c-mute);
}

.page-products .client-card__spec span {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-ice);
  margin-bottom: 0.15rem;
}

@media (min-width: 640px) {
  .page-products .clients-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

@media (min-width: 1024px) {
  .page-products .clients-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.25rem;
    padding-bottom: 2rem;
  }
  .page-products .client-card:nth-child(2),
  .page-products .client-card:nth-child(4) {
    transform: translateY(2rem);
  }
}

/* ============ 安装步骤 ============ */
.page-products .install-grid {
  display: grid;
  gap: clamp(2rem, 4vw, 3rem);
  align-items: start;
}

.page-products .install-grid__body h2 {
  margin: 0.6rem 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.6vw, 2.15rem);
  line-height: 1.2;
  color: var(--c-cream);
}

.page-products .install-grid__body .lede {
  color: var(--c-mute);
  max-width: 58ch;
}

.page-products .install-steps {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
}

.page-products .install-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1.15rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--line-soft);
  transition: background var(--dur) var(--ease);
}

.page-products .install-step:first-child {
  border-top-color: var(--line-gold);
}

.page-products .install-step:focus-within {
  background: rgba(91, 42, 134, 0.12);
}

.page-products .install-step__num {
  padding-top: 0.2rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--c-gold);
}

.page-products .install-step__title {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-cream);
  letter-spacing: 0.01em;
}

.page-products .install-step__body p {
  margin: 0 0 0.5rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--c-mute);
}

.page-products .install-step__meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--c-ice);
}

.page-products .installation-figure {
  margin: 0;
}

@media (min-width: 900px) {
  .page-products .install-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(2rem, 5vw, 4rem);
  }
}

/* ============ 版本迭代 ============ */
.page-products .versions-figure {
  margin: clamp(1.75rem, 4vw, 2.75rem) 0 clamp(2rem, 4vw, 3rem);
}

.page-products .version-track {
  position: relative;
  display: grid;
  gap: 1.5rem;
  padding-left: 1.5rem;
}

.page-products .version-track::before {
  content: "";
  position: absolute;
  left: 0.4375rem;
  top: 0.35rem;
  bottom: 0.35rem;
  width: 1px;
  background: linear-gradient(180deg, var(--c-gold), rgba(201, 162, 39, 0.08));
}

.page-products .version-node {
  position: relative;
  outline: none;
}

.page-products .version-node__dot {
  position: absolute;
  left: -1.5rem;
  top: 0.4rem;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--c-ink);
  border: 2px solid var(--c-gold);
  box-shadow: 0 0 0 4px rgba(201, 162, 39, 0.12);
}

.page-products .version-node__cycle {
  margin: 0 0 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-ice);
}

.page-products .version-node__title {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-cream);
}

.page-products .version-node__desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--c-mute);
  transition: opacity var(--dur) var(--ease);
}

@media (min-width: 900px) {
  .page-products .version-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.75rem;
    padding: 2.75rem 0 0;
  }
  .page-products .version-track::before {
    left: 0;
    right: 0;
    top: 0.7rem;
    bottom: auto;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, rgba(201, 162, 39, 0.08), var(--c-gold), rgba(201, 162, 39, 0.08));
  }
  .page-products .version-node__dot {
    left: 0;
    top: -2.55rem;
  }
  .page-products .version-node__desc {
    opacity: 0.62;
  }
  .page-products .version-node:hover .version-node__desc,
  .page-products .version-node:focus .version-node__desc,
  .page-products .version-node:focus-within .version-node__desc {
    opacity: 1;
  }
  .page-products .version-node:hover .version-node__dot,
  .page-products .version-node:focus .version-node__dot {
    background: var(--c-gold);
    box-shadow: 0 0 0 6px rgba(201, 162, 39, 0.18);
  }
}

/* ============ 入口形态 ============ */
.page-products .forms-block h2 {
  margin: 0.6rem 0 0.9rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.6vw, 2.15rem);
  line-height: 1.2;
  color: var(--c-cream);
}

.page-products .forms-block .lede {
  max-width: 62ch;
  color: var(--c-mute);
}

.page-products .forms-grid {
  display: grid;
  gap: 1rem;
  margin: clamp(1.75rem, 4vw, 2.75rem) 0 1.75rem;
}

.page-products .form-card {
  position: relative;
  padding: 1.5rem 1.25rem 1.5rem;
  background: rgba(26, 14, 42, 0.55);
  border: 1px solid var(--line-soft);
  clip-path: polygon(var(--prod-cut) 0, 100% 0, 100% calc(100% - var(--prod-cut)), calc(100% - var(--prod-cut)) 100%, 0 100%, 0 var(--prod-cut));
}

.page-products .form-card--featured {
  background: linear-gradient(180deg, rgba(91, 42, 134, 0.5), rgba(58, 26, 94, 0.28));
  border-color: var(--c-gold);
}

.page-products .form-card__index {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--c-gold);
}

.page-products .form-card__title {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--c-cream);
}

.page-products .form-card p {
  margin: 0 0 0.75rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--c-mute);
}

.page-products .form-card__cond {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--c-ice);
}

.page-products .forms-note {
  max-width: 68ch;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--c-mute);
}

.page-products .forms-note a {
  color: var(--c-ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(126, 200, 227, 0.4);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-products .forms-note a:hover {
  color: var(--c-gold-lite);
  border-bottom-color: var(--c-gold-lite);
}

@media (min-width: 760px) {
  .page-products .forms-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
  }
  .page-products .form-card--featured {
    transform: translateY(-0.75rem);
  }
}

/* ============ 获取与校验 ============ */
.page-products .acquire-grid {
  display: grid;
  gap: 2rem;
}

.page-products .acquire-grid__body h2 {
  margin: 0.6rem 0 1.25rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.6vw, 2.15rem);
  line-height: 1.2;
  color: var(--c-cream);
}

.page-products .acquire-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

.page-products .acquire-list li {
  display: grid;
  grid-template-columns: minmax(0, 8.5rem) minmax(0, 1fr);
  gap: 1rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line-soft);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--c-mute);
}

.page-products .acquire-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-products .acquire-list__key {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--c-gold);
  padding-top: 0.2rem;
}

.page-products .acquire-list a {
  color: var(--c-ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(126, 200, 227, 0.4);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .acquire-list a:hover {
  color: var(--c-gold-lite);
  border-bottom-color: var(--c-gold-lite);
}

.page-products .acquire-side {
  padding: 1.5rem 1.25rem;
  background: linear-gradient(160deg, rgba(91, 42, 134, 0.4), rgba(14, 14, 18, 0.85));
  border: 1px solid var(--line-gold);
  clip-path: polygon(0 var(--prod-cut), var(--prod-cut) 0, 100% 0, 100% calc(100% - var(--prod-cut)), calc(100% - var(--prod-cut)) 100%, 0 100%);
}

.page-products .acquire-side__lead {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--c-cream);
}

.page-products .acquire-side p {
  margin: 0 0 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--c-mute);
}

@media (min-width: 900px) {
  .page-products .acquire-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    gap: clamp(2rem, 5vw, 4rem);
    align-items: start;
  }
}

@media (max-width: 480px) {
  .page-products .acquire-list li {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
}