.page-products {
  --prod-glow: rgba(0, 229, 255, .10);
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-products .prod-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 22px;
  padding-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}
.page-products .crumb-link {
  color: var(--text-dim);
  text-decoration: none;
  transition: color .2s ease;
}
.page-products .crumb-link:hover { color: var(--cyan); }
.page-products .crumb-sep { color: var(--text-mute); }
.page-products .crumb-current { color: var(--cyan); }

/* ---------- 首屏 ---------- */
.page-products .prod-hero { padding-top: 26px; }
.page-products .prod-hero-grid { display: grid; gap: 36px; }

.page-products .prod-display {
  font-size: clamp(40px, 11vw, 84px);
  line-height: 1.03;
  letter-spacing: -.035em;
  margin: 14px 0 20px;
  font-weight: 800;
}
.page-products .prod-display .hl {
  background: linear-gradient(100deg, var(--cyan) 0%, var(--purple) 58%, var(--gold) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.page-products .prod-lede {
  max-width: 34em;
  color: var(--text-dim);
  line-height: 1.85;
}
.page-products .prod-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-products .prod-hero-aside {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.page-products .prod-tile {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px;
}
.page-products .prod-tile--wide { grid-column: span 2; }
.page-products .prod-tile-k {
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--text-mute);
}
.page-products .prod-tile--wide .prod-tile-k { color: var(--cyan); }
.page-products .prod-tile-num {
  font-family: var(--font-mono);
  font-size: 40px;
  line-height: 1;
  font-weight: 700;
  color: var(--glass);
  letter-spacing: -.02em;
}
.page-products .prod-tile--wide .prod-tile-num {
  font-size: 64px;
  color: var(--cyan);
  text-shadow: 0 0 26px rgba(0, 229, 255, .35);
}
.page-products .prod-tile-unit {
  font-size: 15px;
  margin-left: 4px;
  color: var(--text-dim);
}
.page-products .prod-tile-label {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 横向功能索引 ---------- */
.page-products .prod-index {
  position: sticky;
  top: var(--header-h);
  z-index: 6;
  margin-top: 40px;
  background: rgba(7, 10, 15, .86);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.page-products .prod-index-track {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 12px 18px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}
.page-products .prod-index-track::-webkit-scrollbar { height: 4px; }
.page-products .prod-index-track::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: 4px;
}
.page-products .prod-index-item {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  scroll-snap-align: start;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.page-products .prod-index-item:hover,
.page-products .prod-index-item:focus-visible {
  color: var(--text);
  border-color: var(--line-strong);
  background: rgba(0, 229, 255, .07);
}
.page-products .pidx-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cyan);
}

/* ---------- 通用小节头 ---------- */
.page-products .prod-head { max-width: 760px; }
.page-products .prod-head-text {
  margin-top: 14px;
  color: var(--text-dim);
  line-height: 1.85;
}
.page-products .prod-note {
  margin-top: 18px;
  font-size: 14px;
  color: var(--text-mute);
  line-height: 1.8;
}
.page-products .link-cyan {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, .35);
}
.page-products .link-cyan:hover { border-bottom-color: var(--cyan); }

/* ---------- 01 V4 结构 ---------- */
.page-products .prod-stack { margin-top: 30px; }
.page-products .prod-stack-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 22px 22px;
  overflow: hidden;
}
.page-products .prod-stack-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent 78%);
}
.page-products .prod-stack-card:nth-child(2)::before {
  background: linear-gradient(90deg, var(--purple), transparent 78%);
}
.page-products .prod-stack-card:nth-child(3)::before {
  background: linear-gradient(90deg, var(--gold), transparent 78%);
}
.page-products .prod-stack-no {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--text-mute);
}
.page-products .prod-stack-card .badge { align-self: flex-start; margin-top: auto; }

.page-products .prod-fig { margin: 32px 0 0; }
.page-products .prod-fig-flat { margin: 0; }

/* ---------- 02 小屏查询 ---------- */
.page-products .prod-split { display: grid; gap: 32px; }
.page-products .prod-facts {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-products .prod-facts li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 12px 14px;
  border-left: 2px solid rgba(0, 229, 255, .45);
  background: rgba(232, 246, 255, .035);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.page-products .prod-facts-k {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cyan);
}
.page-products .prod-facts-v {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
}

/* ---------- 03 厂商对比 ---------- */
.page-products .prod-filter { margin: 26px 0 18px; }
.page-products .prod-filter .filter-btn[aria-pressed="true"] {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-products .prod-table-wrap {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(26, 34, 45, .55);
}
.page-products .prod-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  font-size: 14px;
}
.page-products .prod-table-cap {
  padding: 14px 16px 0;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--text-mute);
}
.page-products .prod-table th,
.page-products .prod-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
  white-space: nowrap;
}
.page-products .prod-table thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--cyan);
  font-weight: 500;
  text-transform: uppercase;
}
.page-products .prod-table tbody tr:hover { background: rgba(0, 229, 255, .045); }
.page-products .prod-table tbody tr:last-child td { border-bottom: 0; }
.page-products .prod-cmp-row[hidden] { display: none; }

.page-products .prod-cmp-foot {
  display: grid;
  gap: 20px;
  margin-top: 28px;
}
.page-products .prod-cmp-note {
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ---------- 04 术语库 ---------- */
.page-products .prod-terms-split { display: grid; gap: 24px; margin-top: 28px; }
.page-products .prod-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
}
.page-products .prod-tabs .tab { flex: 0 0 auto; white-space: nowrap; }
.page-products .prod-tabs .tab[aria-selected="true"] {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}
.page-products .prod-panels { display: grid; gap: 12px; }
.page-products .prod-term {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(232, 246, 255, .03);
  transition: border-color .2s ease, background .2s ease;
}
.page-products .prod-term:hover {
  border-color: var(--line-strong);
  background: rgba(0, 229, 255, .05);
}
.page-products .prod-term-name {
  font-weight: 600;
  color: var(--text);
  letter-spacing: .01em;
}
.page-products .prod-term-desc {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 05 规则中心 ---------- */
.page-products .prod-rule-grid {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}
.page-products .prod-rule-col { display: grid; gap: 12px; align-content: start; }
.page-products .prod-rule {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(232, 246, 255, .03);
  overflow: hidden;
}
.page-products .prod-rule[open] {
  border-color: rgba(255, 138, 0, .38);
  background: rgba(255, 138, 0, .05);
}
.page-products .prod-rule summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
}
.page-products .prod-rule summary::-webkit-details-marker { display: none; }
.page-products .prod-rule-no {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gold);
}
.page-products .prod-rule-title { flex: 1 1 auto; }
.page-products .prod-rule-hint {
  font-size: 12px;
  color: var(--text-mute);
  font-family: var(--font-mono);
  letter-spacing: .08em;
}
.page-products .prod-rule[open] .prod-rule-hint { color: var(--gold); }
.page-products .prod-rule-body {
  padding: 14px 18px 18px;
  border-top: 1px solid var(--line-soft);
}
.page-products .prod-rule-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-dim);
}
.page-products .prod-rules-foot {
  display: grid;
  gap: 20px;
  margin-top: 30px;
}
.page-products .prod-rules-note {
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
}

/* ---------- 06 使用流程 ---------- */
.page-products .prod-flow {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.page-products .prod-step {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  padding: 20px 0;
  border-top: 1px solid var(--line-soft);
}
.page-products .prod-step:last-child { border-bottom: 1px solid var(--line-soft); }
.page-products .prod-step-no {
  font-size: 20px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: -.02em;
  line-height: 1.3;
}
.page-products .prod-step-title {
  font-size: 17px;
  margin: 0 0 8px;
  letter-spacing: -.01em;
}
.page-products .prod-step-body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-dim);
  max-width: 62ch;
}
.page-products .prod-flow-links {
  display: grid;
  gap: 12px;
  margin-top: 30px;
}
.page-products .prod-link-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text);
  background: rgba(232, 246, 255, .03);
  transition: border-color .2s ease, transform .2s ease, background .2s ease;
}
.page-products .prod-link-card:hover {
  border-color: var(--line-strong);
  background: rgba(0, 229, 255, .06);
  transform: translateY(-2px);
}
.page-products .prod-link-k {
  font-size: 10.5px;
  letter-spacing: .18em;
  color: var(--purple);
}
.page-products .prod-link-t { font-size: 15px; }

/* ---------- 07 更新节奏 ---------- */
.page-products .prod-cadence {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}
.page-products .prod-cadence-card {
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-products .prod-cadence-k {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--text-mute);
}
.page-products .prod-cadence-card:nth-child(1) .prod-cadence-k { color: var(--cyan); }
.page-products .prod-cadence-card:nth-child(2) .prod-cadence-k { color: var(--purple); }
.page-products .prod-cadence-card:nth-child(3) .prod-cadence-k { color: var(--gold); }
.page-products .prod-cadence-num {
  font-family: var(--font-mono);
  font-size: 48px;
  line-height: 1;
  font-weight: 700;
  color: var(--glass);
  letter-spacing: -.03em;
}
.page-products .prod-cadence-unit {
  font-size: 15px;
  margin-left: 4px;
  color: var(--text-dim);
}
.page-products .prod-cadence-foot {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 结尾行动区 ---------- */
.page-products .prod-cta { padding-top: 8px; }
.page-products .prod-cta-inner {
  display: grid;
  gap: 22px;
  padding: 34px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(600px 240px at 12% 0%, var(--prod-glow), transparent 70%),
    rgba(11, 19, 26, .72);
}
.page-products .prod-cta-text .lede { margin-top: 12px; color: var(--text-dim); }
.page-products .prod-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 760px) {
  .page-products .prod-index-track { padding: 12px 32px; }
  .page-products .prod-cadence { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-products .prod-flow-links { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-products .prod-cmp-foot { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); align-items: stretch; }
  .page-products .prod-rules-foot { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: stretch; }
  .page-products .prod-rule-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-products .prod-cta-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 42px 40px;
  }
}

@media (min-width: 920px) {
  .page-products .prod-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 56px;
    align-items: start;
  }
  .page-products .prod-split {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    gap: 52px;
    align-items: center;
  }
  .page-products .prod-terms-split {
    grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
    gap: 34px;
    align-items: start;
  }
  .page-products .prod-tabs {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-products .prod-tabs .tab { width: 100%; text-align: left; }
}

@media (min-width: 1100px) {
  .page-products .prod-step {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 24px;
  }
  .page-products .prod-flow-links { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .prod-index-item,
  .page-products .prod-link-card,
  .page-products .prod-term { transition: none; }
  .page-products .prod-link-card:hover { transform: none; }
}