.page-products {
  --pp-gap: clamp(16px, 2.6vw, 28px);
  --pp-rail: 208px;
  --pp-line: rgba(169, 186, 200, 0.22);
  --pp-glass: rgba(221, 247, 244, 0.08);
  background: var(--c-night);
  color: var(--c-poster);
  padding-bottom: clamp(48px, 7vw, 88px);
}

.page-products .prod-crumb-wrap {
  padding-top: calc(var(--header-h) + 18px);
  padding-bottom: 6px;
}

.page-products .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-steel);
}

.page-products .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 8px;
  color: var(--c-steel);
}

.page-products .prod-crumb-link {
  color: var(--c-ice);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-products .prod-crumb-link:hover,
.page-products .prod-crumb-link:focus-visible {
  color: var(--c-cyan);
  border-bottom-color: var(--c-cyan);
}

.page-products .breadcrumb-current {
  color: var(--c-poster);
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  padding-block: clamp(18px, 3vw, 32px) clamp(28px, 4.5vw, 56px);
}

.page-products .prod-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pp-gap);
  padding-block: clamp(22px, 3.4vw, 40px) clamp(8px, 1.4vw, 14px);
  border-top: var(--hair) solid var(--pp-line);
  border-bottom: var(--hair) solid var(--pp-line);
}

.page-products .prod-hero-main {
  min-width: 0;
}

.page-products .prod-eyebrow {
  margin: 0 0 14px;
  color: var(--c-cyan);
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
}

.page-products .prod-h1 {
  margin: 0 0 18px;
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(2rem, 5.6vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--c-poster);
  max-width: 15ch;
}

.page-products .prod-lede {
  margin: 0 0 22px;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-ice);
}

.page-products .prod-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-products .prod-hero-figure {
  margin: 0;
  min-width: 0;
  position: relative;
  border: var(--hair) solid var(--c-broadcast);
  background: var(--c-stand);
  padding: 8px;
}

.page-products .prod-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.92);
}

.page-products .prod-hero-figure figcaption {
  padding: 10px 4px 2px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--c-steel);
}

/* 横向刻度导航 */
.page-products .prod-scale {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: var(--hair) solid var(--pp-line);
}

.page-products .prod-scale-item {
  border-bottom: var(--hair) solid var(--pp-line);
  border-right: var(--hair) solid var(--pp-line);
}

.page-products .prod-scale-item:nth-child(2n) {
  border-right: 0;
}

.page-products .prod-scale-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 12px 12px 12px 0;
  font-size: 13px;
  color: var(--c-ice);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease), padding-left var(--t-fast) var(--ease);
}

.page-products .prod-scale-link:hover,
.page-products .prod-scale-link:focus-visible {
  color: var(--c-cyan);
  padding-left: 6px;
}

.page-products .prod-scale-num {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--c-orange);
  letter-spacing: 0.08em;
}

/* ---------- 主体两栏 ---------- */
.page-products .prod-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
  padding-block: clamp(24px, 4vw, 48px);
}

.page-products .prod-toc {
  border-top: 2px solid var(--c-cyan);
  padding-top: 12px;
}

.page-products .prod-toc-title {
  margin: 0 0 10px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-steel);
  text-transform: uppercase;
}

.page-products .prod-toc-list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
}

.page-products .prod-toc-link {
  display: flex;
  gap: 9px;
  align-items: baseline;
  padding: 7px 10px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--c-ice);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-products .prod-toc-link .mono {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--c-steel);
}

.page-products .prod-toc-link:hover,
.page-products .prod-toc-link:focus-visible {
  color: var(--c-poster);
  border-left-color: var(--c-cyan);
  background: var(--pp-glass);
}

.page-products .prod-toc-link:hover .mono,
.page-products .prod-toc-link:focus-visible .mono {
  color: var(--c-cyan);
}

.page-products .prod-toc-foot {
  margin: 0;
  padding-top: 12px;
  border-top: var(--hair) solid var(--pp-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-steel);
}

.page-products .prod-inline-link {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 214, 0.4);
}

.page-products .prod-inline-link:hover,
.page-products .prod-inline-link:focus-visible {
  color: var(--c-poster);
  border-bottom-color: var(--c-poster);
}

.page-products .prod-main {
  min-width: 0;
}

/* ---------- 区块通用 ---------- */
.page-products .prod-section {
  padding-block: clamp(26px, 4vw, 46px);
  border-top: var(--hair) solid var(--pp-line);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

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

.page-products .prod-section-head {
  margin-bottom: clamp(18px, 2.6vw, 28px);
}

.page-products .prod-sec-num {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--c-orange);
}

.page-products .prod-sec-title {
  margin: 0 0 8px;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 3.2vw, 2.1rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--c-poster);
  max-width: 24ch;
}

.page-products .prod-sec-note {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--c-ice);
}

.page-products .prod-p {
  margin: 0 0 16px;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--c-ice);
}

.page-products .prod-p-foot {
  margin-top: 18px;
  padding-top: 16px;
  border-top: var(--hair) solid var(--pp-line);
}

.page-products .prod-subtitle {
  margin: 0 0 12px;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(1.1rem, 2.2vw, 1.4rem);
  line-height: 1.4;
  color: var(--c-poster);
}

/* ---------- 五模块矩阵 ---------- */
.page-products .prod-matrix {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-products .prod-mod {
  position: relative;
  padding: 18px 18px 16px;
  background: var(--c-stand);
  border: var(--hair) solid var(--c-broadcast);
  border-left: 2px solid var(--c-broadcast);
  transition: border-left-color var(--t-mid) var(--ease), background var(--t-mid) var(--ease), transform var(--t-mid) var(--ease);
}

.page-products .prod-mod:hover {
  border-left-color: var(--c-cyan);
  background: #0f304d;
  transform: translateY(-2px);
}

.page-products .prod-mod-accent {
  background: linear-gradient(160deg, rgba(21, 74, 102, 0.9), rgba(13, 42, 68, 0.92));
  border-color: rgba(53, 242, 214, 0.32);
}

.page-products .prod-mod-num {
  margin: 0 0 10px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
}

.page-products .prod-mod-title {
  margin: 0 0 8px;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1.15rem;
  line-height: 1.35;
  color: var(--c-poster);
}

.page-products .prod-mod-text {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-ice);
}

.page-products .prod-mod-meta {
  margin: 0 0 14px;
  padding-top: 10px;
  border-top: var(--hair) solid rgba(169, 186, 200, 0.18);
  font-family: var(--f-mono);
  font-size: 11.5px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--c-steel);
}

.page-products .prod-mod-link {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 214, 0.35);
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-products .prod-mod-link:hover,
.page-products .prod-mod-link:focus-visible {
  color: var(--c-poster);
  border-bottom-color: var(--c-poster);
}

/* ---------- 分栏 ---------- */
.page-products .prod-cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 30px);
  align-items: start;
  margin-bottom: 8px;
}

.page-products .prod-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .prod-checklist li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-top: var(--hair) solid var(--pp-line);
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-ice);
}

.page-products .prod-check-key {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-orange);
}

.page-products .prod-col-b {
  padding: 18px;
  border-left: 2px solid var(--c-orange);
}

.page-products .prod-aside-label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--c-orange);
}

.page-products .prod-aside-text {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-ice);
}

/* ---------- 表格 ---------- */
.page-products .prod-table-wrap {
  overflow-x: auto;
  border: var(--hair) solid var(--c-broadcast);
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-products .prod-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-products .prod-table-cap {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-steel);
  background: var(--c-ink);
  border-bottom: var(--hair) solid var(--c-broadcast);
}

.page-products .prod-table th {
  padding: 11px 14px;
  text-align: left;
  background: var(--c-broadcast);
  color: var(--c-poster);
  font-family: var(--f-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.page-products .prod-table td {
  padding: 12px 14px;
  border-bottom: var(--hair) solid var(--pp-line);
  color: var(--c-ice);
  line-height: 1.7;
  vertical-align: top;
  transition: background var(--t-fast) var(--ease);
}

.page-products .prod-table td:first-child {
  font-family: var(--f-mono);
  font-size: 13px;
  color: var(--c-poster);
  white-space: nowrap;
}

.page-products .prod-table tbody tr:hover td {
  background: var(--pp-glass);
}

.page-products .prod-table tbody tr:hover td:first-child {
  box-shadow: inset 2px 0 0 var(--c-cyan);
  color: var(--c-cyan);
}

/* ---------- 图片 ---------- */
.page-products .prod-figure {
  margin: 0;
  border: var(--hair) solid var(--c-broadcast);
  background: var(--c-stand);
  padding: 8px;
}

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

.page-products .prod-figure figcaption {
  padding: 10px 4px 2px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--c-steel);
}

.page-products .prod-figure-wide {
  margin-top: clamp(18px, 3vw, 28px);
}

/* ---------- 条目列表 ---------- */
.page-products .prod-ticks {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
}

.page-products .prod-ticks li {
  position: relative;
  padding: 9px 0 9px 20px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-ice);
  border-bottom: var(--hair) solid var(--pp-line);
}

.page-products .prod-ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 19px;
  width: 9px;
  height: 2px;
  background: var(--c-cyan);
}

.page-products .prod-ticks strong {
  color: var(--c-poster);
  font-weight: 600;
}

/* ---------- 内容栏目四格 ---------- */
.page-products .prod-quad {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--c-broadcast);
  border: var(--hair) solid var(--c-broadcast);
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-products .prod-quad-item {
  padding: 18px;
  background: var(--c-night);
  transition: background var(--t-mid) var(--ease);
}

.page-products .prod-quad-item:hover {
  background: #0a2237;
}

.page-products .prod-quad-num {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-orange);
}

.page-products .prod-quad-title {
  margin: 0 0 8px;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1.08rem;
  color: var(--c-poster);
}

.page-products .prod-quad-item p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-ice);
}

/* ---------- 三步路径 ---------- */
.page-products .prod-path-svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 160px;
  margin-bottom: 18px;
}

.page-products .prod-path-svg text {
  font-family: var(--f-mono);
  font-size: 22px;
  font-weight: 700;
  fill: var(--c-poster);
}

.page-products .prod-details {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  margin-bottom: clamp(22px, 3.4vw, 34px);
}

.page-products .prod-detail {
  border: var(--hair) solid var(--c-broadcast);
  border-left: 2px solid var(--c-broadcast);
  background: rgba(13, 42, 68, 0.72);
  transition: border-left-color var(--t-mid) var(--ease);
}

.page-products .prod-detail[open] {
  border-left-color: var(--c-cyan);
}

.page-products .prod-detail summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-poster);
}

.page-products .prod-detail summary::-webkit-details-marker {
  display: none;
}

.page-products .prod-detail summary .mono {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--c-cyan);
  letter-spacing: 0.1em;
}

.page-products .prod-detail summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--f-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--c-cyan);
}

.page-products .prod-detail[open] summary::after {
  content: "–";
}

.page-products .prod-detail-body {
  padding: 0 16px 16px 44px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-ice);
}

.page-products .prod-audience {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-products .prod-audience li {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 12px 14px;
  background: var(--c-stand);
  border: var(--hair) solid var(--c-broadcast);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-ice);
}

.page-products .prod-audience .mono {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--c-orange);
  letter-spacing: 0.08em;
}

/* ---------- 使用准备 ---------- */
.page-products .prod-prep {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--c-broadcast);
  border: var(--hair) solid var(--c-broadcast);
  margin-bottom: clamp(22px, 3.4vw, 34px);
}

.page-products .prod-prep-item {
  padding: 16px 18px;
  background: var(--c-night);
}

.page-products .prod-prep-label {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--c-cyan);
}

.page-products .prod-prep-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-ice);
}

.page-products .prod-cta {
  padding: clamp(20px, 3vw, 30px);
  background: linear-gradient(120deg, rgba(53, 242, 214, 0.12), rgba(255, 107, 44, 0.1) 70%, transparent);
  border: var(--hair) solid rgba(53, 242, 214, 0.3);
  border-left: 3px solid var(--c-cyan);
}

.page-products .prod-cta-text {
  margin: 0 0 18px;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-poster);
}

.page-products .prod-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-products a:focus-visible,
.page-products summary:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
}

@media (min-width: 640px) {
  .page-products .prod-scale {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .prod-scale-item:nth-child(2n) {
    border-right: var(--hair) solid var(--pp-line);
  }

  .page-products .prod-scale-item:nth-child(4n) {
    border-right: 0;
  }

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

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

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

@media (min-width: 900px) {
  .page-products .prod-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    grid-template-areas:
      "main fig"
      "scale scale";
    column-gap: clamp(24px, 4vw, 56px);
  }

  .page-products .prod-hero-main {
    grid-area: main;
  }

  .page-products .prod-hero-figure {
    grid-area: fig;
  }

  .page-products .prod-scale {
    grid-area: scale;
    grid-template-columns: repeat(7, minmax(0, 1fr));
  }

  .page-products .prod-scale-item:nth-child(n) {
    border-right: var(--hair) solid var(--pp-line);
  }

  .page-products .prod-scale-item:last-child {
    border-right: 0;
  }

  .page-products .prod-matrix {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 12px;
  }

  .page-products .prod-mod-7 {
    grid-column: span 7;
  }

  .page-products .prod-mod-5 {
    grid-column: span 5;
  }

  .page-products .prod-mod-4 {
    grid-column: span 4;
  }

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

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

  .page-products .prod-checklist li {
    grid-template-columns: 92px minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }

  .page-products .prod-quad {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .page-products .prod-body {
    grid-template-columns: var(--pp-rail) minmax(0, 1fr);
    column-gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-products .prod-toc {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }

  .page-products .prod-toc-list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
  }

  .page-products .prod-toc-link {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .prod-mod,
  .page-products .prod-scale-link,
  .page-products .prod-toc-link,
  .page-products .prod-table td {
    transition: none;
  }

  .page-products .prod-mod:hover {
    transform: none;
  }
}