.page-products {
  --pp-rail: 300px;
  --pp-gap: clamp(1rem, 2vw, 1.5rem);
  --pp-flow-gap: clamp(3rem, 7vw, 6rem);
  background: var(--ink-deep);
  color: var(--paper-cream);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.page-products .sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.page-products .breadcrumbs {
  padding-top: clamp(1.25rem, 3vw, 2rem);
  font-size: 0.8125rem;
  color: var(--mist-gray);
}

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

.page-products .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 0.4rem;
  color: var(--rust-orange);
}

.page-products .breadcrumb-list a {
  color: var(--mist-gray);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-products .breadcrumb-list a:hover {
  color: var(--signal-green);
  border-bottom-color: var(--signal-green);
}

/* ---------- 布局骨架 ---------- */

.page-products .catalog-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 4vw, 3rem);
  padding-top: clamp(1.5rem, 3vw, 2.5rem);
}

.page-products .catalog-flow {
  display: flex;
  flex-direction: column;
  gap: var(--pp-flow-gap);
  min-width: 0;
}

/* ---------- 左栏：标题 + 目录树 ---------- */

.page-products .catalog-h1 {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 4.4vw, 3rem);
  font-weight: 200;
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 0.6rem 0 0;
  color: var(--paper-cream);
}

.page-products .catalog-sub {
  margin: 0.65rem 0 0;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal-green);
}

.page-products .catalog-lede {
  margin: 1rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--mist-gray);
}

.page-products .catalog-tree {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
}

.page-products .catalog-tree ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .catalog-tree li {
  border-top: 1px solid var(--line-hair);
}

.page-products .catalog-tree li:last-child {
  border-bottom: 1px solid var(--line-hair);
}

.page-products .catalog-tree a {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.68rem 0.15rem;
  color: var(--paper-cream);
  text-decoration: none;
  font-size: 0.90625rem;
  line-height: 1.4;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-products .catalog-tree a:hover,
.page-products .catalog-tree a:focus-visible {
  color: var(--signal-green);
  padding-left: 0.55rem;
}

.page-products .tree-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--rust-orange);
  min-width: 1.5rem;
  flex: none;
}

.page-products .tree-txt {
  min-width: 0;
}

/* ---------- 通用区块 ---------- */

.page-products .catalog-block {
  min-width: 0;
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

.page-products .block-head {
  border-top: 2px solid var(--line-hair);
  padding-top: 0.85rem;
  margin-bottom: 1rem;
}

.page-products .block-lab {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist-gray);
}

.page-products .block-num {
  color: var(--rust-orange);
  margin-right: 0.6rem;
}

.page-products .block-title {
  margin: 0.45rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.6vw, 2.05rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--paper-cream);
}

.page-products .block-lede {
  margin: 0 0 clamp(1.25rem, 2.5vw, 1.75rem);
  max-width: 66ch;
  font-size: 0.9688rem;
  line-height: 1.78;
  color: var(--mist-gray);
}

.page-products .foot-note {
  margin: 0.9rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--mist-gray);
}

.page-products .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 三块内容卡 ---------- */

.page-products .triple {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pp-gap);
}

.page-products .triple-card {
  background: var(--ink-panel);
  border: 1px solid var(--line-hair);
  border-radius: var(--radius);
  padding: clamp(1rem, 2.2vw, 1.5rem);
  display: flex;
  flex-direction: column;
}

.page-products .triple-title {
  margin: 0.55rem 0 0;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--paper-cream);
}

.page-products .triple-num {
  margin: 0.7rem 0 0;
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--signal-green);
  letter-spacing: -0.02em;
}

.page-products .triple-cap {
  margin: 0.4rem 0 0;
  font-size: 0.8125rem;
  color: var(--amber-node);
}

.page-products .triple-body {
  margin: 0.85rem 0 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--mist-gray);
}

/* ---------- 状态说明 ---------- */

.page-products .status-key {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: clamp(1.25rem, 2.5vw, 1.75rem) 0 0;
  background: var(--line-hair);
  border: 1px solid var(--line-hair);
}

.page-products .status-cell {
  background: var(--ink-panel);
  padding: 0.9rem 1rem;
}

.page-products .status-cell dt {
  margin: 0 0 0.5rem;
}

.page-products .status-cell dd {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--mist-gray);
}

/* ---------- 图片容器 ---------- */

.page-products .media-frame {
  margin: 0 0 clamp(1.25rem, 2.5vw, 1.75rem);
}

.page-products .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line-hair);
  border-radius: var(--radius);
  background: var(--ink-panel);
}

.page-products .media-caption {
  margin: 0.6rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--mist-gray);
}

/* ---------- 字段表 ---------- */

.page-products .table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line-hair);
  border-radius: var(--radius);
  background: var(--ink-panel);
}

.page-products .field-table {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.page-products .field-table thead th {
  text-align: left;
  padding: 0.75rem 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mist-gray);
  border-bottom: 1px solid var(--mist-gray);
  white-space: nowrap;
}

.page-products .field-table tbody th {
  text-align: left;
  padding: 0.8rem 0.9rem;
  font-weight: 700;
  color: var(--paper-cream);
  white-space: nowrap;
  vertical-align: top;
}

.page-products .field-table tbody td {
  padding: 0.8rem 0.9rem;
  line-height: 1.65;
  color: var(--mist-gray);
  vertical-align: top;
}

.page-products .field-table tbody tr {
  border-bottom: 1px solid var(--line-hair);
  transition: background var(--dur) var(--ease);
}

.page-products .field-table tbody tr:last-child {
  border-bottom: 0;
}

.page-products .field-table tbody tr:hover {
  background: rgba(0, 230, 118, 0.06);
}

.page-products .field-table td.mono {
  color: var(--amber-node);
  font-size: 0.8125rem;
  white-space: nowrap;
}

.page-products .field-copy {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.2rem 0.45rem;
  background: transparent;
  border: 1px solid var(--line-hair);
  color: var(--mist-gray);
  border-radius: var(--radius);
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .field-copy:hover,
.page-products .field-copy:focus-visible {
  color: var(--signal-green);
  border-color: var(--signal-green);
}

/* ---------- 双栏小分块 ---------- */

.page-products .split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pp-gap);
  align-items: start;
  margin-bottom: clamp(1.5rem, 3vw, 2rem);
}

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

.page-products .paper-block {
  background: var(--paper-cream);
  color: var(--black-brown);
  border-radius: var(--radius);
  padding: clamp(1rem, 2.4vw, 1.6rem);
}

.page-products .paper-block .index-label {
  color: var(--rust-orange);
}

.page-products .split-paper {
  border-left: 3px solid var(--rust-orange);
}

.page-products .step-list {
  list-style: none;
  counter-reset: none;
  margin: 0.85rem 0 0;
  padding: 0;
}

.page-products .step-list li {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(36, 30, 26, 0.14);
  font-size: 0.90625rem;
  line-height: 1.6;
}

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

.page-products .step-num {
  flex: none;
  min-width: 1.4rem;
  font-size: 0.75rem;
  color: var(--rust-orange);
}

.page-products .paper-note {
  margin: 0.9rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: rgba(36, 30, 26, 0.72);
}

/* ---------- 关键数字条 ---------- */

.page-products .keyline {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem 1.5rem;
  border-top: 1px solid var(--line-hair);
  border-bottom: 1px solid var(--line-hair);
  padding: 1rem 0;
}

.page-products .keyline-figure {
  margin: 0;
  font-size: clamp(1.6rem, 3.4vw, 2.3rem);
  font-weight: 700;
  line-height: 1;
  color: var(--amber-node);
  letter-spacing: -0.02em;
}

.page-products .keyline-text {
  margin: 0;
  flex: 1 1 22ch;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--mist-gray);
}

/* ---------- 四格节点 ---------- */

.page-products .quad {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-hair);
  border: 1px solid var(--line-hair);
  margin-bottom: clamp(1.5rem, 3vw, 2rem);
}

.page-products .quad-cell {
  background: var(--ink-deep);
  padding: 1rem;
}

.page-products .quad-key {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--amber-node);
}

.page-products .quad-val {
  margin: 0.55rem 0 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--mist-gray);
}

/* ---------- 客户端区块 ---------- */

.page-products .client-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.25rem, 2.5vw, 2rem);
  align-items: start;
}

.page-products .device-figure {
  margin: 0;
  max-width: 380px;
}

.page-products .device-screen {
  border: 1px solid var(--line-hair);
  border-radius: var(--radius);
  background: var(--ink-panel);
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.page-products .device-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.7rem 0.6rem;
  background: var(--ink-deep);
}

.page-products .device-id {
  font-size: 0.8125rem;
  color: var(--paper-cream);
}

.page-products .device-row--hold .device-id {
  color: var(--mist-gray);
}

.page-products .device-row--muted {
  background: rgba(147, 164, 180, 0.08);
}

.page-products .device-hold {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--mist-gray);
}

.page-products .client-notes {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pp-gap);
}

.page-products .note-card {
  background: var(--ink-panel);
  border: 1px solid var(--line-hair);
  border-left: 3px solid var(--signal-green);
  border-radius: var(--radius);
  padding: 1rem;
}

.page-products .note-body {
  margin: 0.55rem 0 0;
  font-size: 0.875rem;
  line-height: 1.72;
  color: var(--mist-gray);
}

/* ---------- 筛选与预览 ---------- */

.page-products .filter-band {
  border: 1px solid var(--line-hair);
  border-radius: var(--radius);
  background: var(--ink-panel);
  padding: clamp(0.9rem, 2vw, 1.25rem);
  margin-bottom: clamp(1.5rem, 3vw, 2rem);
}

.page-products .chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--line-hair);
  margin-bottom: 0.75rem;
}

.page-products .chip {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line-hair);
  background: transparent;
  color: var(--mist-gray);
  border-radius: var(--radius);
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-products .chip:hover,
.page-products .chip:focus-visible {
  color: var(--paper-cream);
  border-color: var(--mist-gray);
}

.page-products .chip[aria-pressed="true"] {
  background: var(--signal-green);
  border-color: var(--signal-green);
  color: var(--ink-deep);
  font-weight: 700;
}

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

.page-products .preview-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  padding: 0.62rem 0.25rem;
  border-bottom: 1px solid var(--line-hair);
}

.page-products .preview-item:last-child {
  border-bottom: 0;
}

.page-products .preview-id {
  font-size: 0.8125rem;
  color: var(--paper-cream);
  min-width: 5.5rem;
}

.page-products .preview-meta {
  flex: 1 1 12ch;
  font-size: 0.8125rem;
  color: var(--mist-gray);
}

.page-products .split--reverse .split-figure {
  order: 2;
}

.page-products .split--reverse .split-paper {
  order: 1;
}

/* ---------- 边界说明 ---------- */

.page-products .limit-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pp-gap);
  margin-bottom: clamp(1.5rem, 3vw, 2rem);
}

.page-products .limit-cell {
  border-top: 1px solid var(--line-hair);
  padding-top: 0.85rem;
}

.page-products .limit-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--paper-cream);
}

.page-products .limit-body {
  margin: 0.5rem 0 0;
  font-size: 0.875rem;
  line-height: 1.72;
  color: var(--mist-gray);
}

.page-products .limit-paper {
  border-left: 3px solid var(--amber-node);
}

.page-products .limit-text {
  margin: 0.7rem 0 0;
  font-size: 0.90625rem;
  line-height: 1.8;
}

.page-products .limit-text a {
  color: var(--green-deep);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 161, 82, 0.4);
}

.page-products .limit-text a:hover {
  border-bottom-color: var(--green-deep);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-products .triple,
  .page-products .client-notes,
  .page-products .limit-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 1024px) {
  .page-products .catalog-layout {
    grid-template-columns: minmax(280px, 340px) minmax(0, 1fr);
    gap: clamp(2.5rem, 5vw, 4.5rem);
    align-items: start;
  }

  .page-products .rail-sticky {
    position: sticky;
    top: calc(var(--header-h) + 2rem);
  }

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

  .page-products .split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: clamp(1.5rem, 3vw, 2.5rem);
  }

  .page-products .split--reverse {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr);
  }

  .page-products .client-split {
    grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
    gap: clamp(1.75rem, 3.5vw, 3rem);
  }

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

  .page-products .client-notes .note-card:first-child {
    grid-column: span 2;
  }

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

@media (min-width: 1280px) {
  .page-products .client-notes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .client-notes .note-card:first-child {
    grid-column: span 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .catalog-tree a,
  .page-products .chip,
  .page-products .field-copy,
  .page-products .field-table tbody tr {
    transition: none;
  }
}
</main>