.page-products {
  --biz-section-pad: clamp(52px, 7.5vw, 100px);
  --biz-border: 1px solid var(--line);
  --biz-shadow: 2px 2px 0 var(--line);
  color: var(--white);
  background: var(--ink);
}

.page-products .biz-crumb {
  padding-block: 14px 0;
}

.page-products .biz-crumb .breadcrumb {
  margin: 0;
}

/* ---------- 首屏 ---------- */

.page-products .biz-hero {
  padding-block: clamp(30px, 5vw, 54px) clamp(40px, 6vw, 76px);
  background:
    radial-gradient(120% 90% at 12% 0%, rgba(255, 107, 44, 0.1), transparent 58%),
    linear-gradient(180deg, var(--abyss), var(--ink) 72%);
  border-bottom: var(--biz-border);
}

.page-products .biz-hero__inner {
  display: grid;
  gap: 28px;
}

.page-products .biz-hero__side {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-products .biz-hero__index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-products .biz-hero__index li {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 12px 0;
  border-top: var(--biz-border);
  font-size: 0.95rem;
  color: var(--mist);
}

.page-products .biz-hero__index li:last-child {
  border-bottom: var(--biz-border);
}

.page-products .biz-hero__index .mono {
  color: var(--orange);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
}

.page-products .biz-hero__title {
  margin: 0 0 18px;
  font-size: clamp(2rem, 5.4vw, 3.5rem);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-products .biz-hero__lede {
  max-width: 60ch;
  margin: 0 0 26px;
  font-size: clamp(1rem, 1.6vw, 1.08rem);
  line-height: 1.85;
  color: var(--mist);
}

.page-products .biz-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}

.page-products .biz-hero .version-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border: var(--biz-border);
  background: var(--panel);
}

.page-products .biz-hero .version-chip__code {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--white);
}

.page-products .biz-hero .version-chip__label {
  font-size: 0.82rem;
  color: var(--mist);
}

/* ---------- 区块通用 ---------- */

.page-products .biz-section {
  padding-block: var(--biz-section-pad);
  border-bottom: var(--biz-border);
}

.page-products .biz-section__lede {
  max-width: 62ch;
  margin: 16px 0 0;
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--mist);
}

.page-products .biz-figure {
  margin: clamp(28px, 4vw, 44px) 0 0;
  border: var(--biz-border);
  background: var(--abyss);
  overflow: hidden;
  box-shadow: var(--biz-shadow);
}

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

.page-products .biz-textlink {
  display: inline-block;
  color: var(--orange-soft);
  font-size: 0.95rem;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 163, 107, 0.45);
  padding-bottom: 2px;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-products .biz-textlink:hover,
.page-products .biz-textlink:focus-visible {
  color: var(--orange);
  border-color: var(--orange);
}

/* ---------- 路径总览 ---------- */

.page-products .biz-tree {
  position: relative;
  display: grid;
  gap: 18px;
  margin-top: 32px;
  padding-left: 30px;
}

.page-products .biz-tree::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: linear-gradient(180deg, var(--orange), var(--line));
}

.page-products .biz-node {
  position: relative;
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 20px;
  background: var(--panel);
  border: var(--biz-border);
  box-shadow: var(--biz-shadow);
  transition: transform 180ms var(--ease), border-color 180ms var(--ease);
}

.page-products .biz-node::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 24px;
  width: 10px;
  height: 10px;
  background: var(--ink);
  border: 2px solid var(--orange);
}

.page-products .biz-node:hover {
  transform: translateY(-2px);
  border-color: var(--panel-2);
}

.page-products .biz-node--lead {
  border-left: 3px solid var(--orange);
}

.page-products .biz-node__num {
  justify-self: start;
  padding: 3px 10px;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: var(--orange);
  background: var(--abyss);
  border: var(--biz-border);
}

.page-products .biz-node__title {
  margin: 0;
  font-size: 1.22rem;
  line-height: 1.35;
  font-weight: 800;
  color: var(--white);
}

.page-products .biz-node__path {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--orange-soft);
}

.page-products .biz-node__text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-products .biz-node__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

/* ---------- 桌面测试 ---------- */

.page-products .biz-entry {
  background: linear-gradient(180deg, var(--abyss), var(--ink) 60%);
}

.page-products .biz-entry__grid {
  display: grid;
  gap: 28px;
  margin-top: 32px;
}

.page-products .biz-entry__steps {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-products .biz-step {
  background: var(--panel);
  border: var(--biz-border);
  border-left: 3px solid var(--line);
  transition: border-color 160ms var(--ease);
}

.page-products .biz-step[open] {
  border-left-color: var(--orange);
}

.page-products .biz-step__head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-products .biz-step__head::-webkit-details-marker {
  display: none;
}

.page-products .biz-step__num {
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-products .biz-step__name {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--white);
}

.page-products .biz-step__cue {
  position: relative;
  margin-left: auto;
  width: 12px;
  height: 12px;
  flex: 0 0 auto;
}

.page-products .biz-step__cue::before,
.page-products .biz-step__cue::after {
  content: "";
  position: absolute;
  background: var(--orange);
}

.page-products .biz-step__cue::before {
  left: 0;
  top: 5px;
  width: 12px;
  height: 2px;
}

.page-products .biz-step__cue::after {
  left: 5px;
  top: 0;
  width: 2px;
  height: 12px;
  transition: transform 160ms var(--ease);
}

.page-products .biz-step[open] .biz-step__cue::after {
  transform: scaleY(0);
}

.page-products .biz-step__body {
  padding: 0 18px 18px;
  border-top: var(--biz-border);
  padding-top: 14px;
}

.page-products .biz-step__body p {
  margin: 0 0 10px;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--mist);
}

.page-products .biz-step__meta {
  margin: 0;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--mint);
}

.page-products .biz-entry__more {
  justify-self: start;
  margin-top: 4px;
}

.page-products .biz-entry__aside {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-products .biz-entry__aside .biz-figure {
  margin: 0;
}

.page-products .biz-spec {
  padding: 18px;
  background: var(--panel-2);
  border: var(--biz-border);
}

.page-products .biz-spec__title {
  margin: 0 0 12px;
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-products .biz-spec__list {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-products .biz-spec__list > div {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 9px 0;
  border-top: 1px solid rgba(36, 68, 92, 0.7);
  font-size: 0.9rem;
}

.page-products .biz-spec__list dt {
  color: var(--mist);
}

.page-products .biz-spec__list dd {
  margin: 0;
  color: var(--white);
  text-align: right;
}

/* ---------- 记录导出 ---------- */

.page-products .biz-rec__grid {
  display: grid;
  gap: 28px;
  margin-top: 32px;
}

.page-products .biz-rec__main {
  display: grid;
  gap: 22px;
  align-content: start;
}

.page-products .rec-table__wrap {
  overflow-x: auto;
  border: var(--biz-border);
  background: var(--panel);
  box-shadow: var(--biz-shadow);
}

.page-products .rec-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 0.94rem;
}

.page-products .rec-table__cap {
  padding: 14px 16px 6px;
  text-align: left;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-products .rec-table th,
.page-products .rec-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(36, 68, 92, 0.7);
}

.page-products .rec-table th {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  font-weight: 700;
  color: var(--mist);
  background: var(--abyss);
}

.page-products .rec-table td {
  color: var(--white);
}

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

.page-products .rec-table tbody tr:hover {
  background: var(--panel-2);
}

.page-products .rec-table .mono {
  font-size: 0.86rem;
  letter-spacing: 0.04em;
  color: var(--mint);
}

.page-products .rec-tabs {
  display: grid;
  grid-template-columns: max-content max-content;
  gap: 0;
  align-items: start;
}

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

.page-products .rec-tabs__label {
  padding: 9px 22px;
  margin-right: -1px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--mist);
  background: var(--abyss);
  border: var(--biz-border);
  cursor: pointer;
  transition: background 160ms var(--ease), color 160ms var(--ease);
}

.page-products #rec-pdf:checked ~ .rec-tabs__label[for="rec-pdf"],
.page-products #rec-csv:checked ~ .rec-tabs__label[for="rec-csv"] {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--abyss);
}

.page-products #rec-pdf:focus-visible ~ .rec-tabs__label[for="rec-pdf"],
.page-products #rec-csv:focus-visible ~ .rec-tabs__label[for="rec-csv"] {
  outline: 2px solid var(--orange-soft);
  outline-offset: 2px;
}

.page-products .rec-tabs__panel {
  display: none;
  grid-column: 1 / -1;
  padding: 18px 20px;
  background: var(--panel);
  border: var(--biz-border);
  margin-top: -1px;
}

.page-products #rec-pdf:checked ~ .rec-tabs__panel--pdf,
.page-products #rec-csv:checked ~ .rec-tabs__panel--csv {
  display: block;
}

.page-products .rec-tabs__panel p {
  margin: 0 0 12px;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--mist);
}

.page-products .rec-tabs__panel .rec-tabs__note {
  margin: 0;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  color: var(--mint);
}

.page-products .biz-rec__aside {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-products .biz-rec__aside .biz-figure {
  margin: 0;
}

.page-products .rec-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border: var(--biz-border);
  background: var(--panel-2);
}

.page-products .rec-steps li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  font-size: 0.92rem;
  color: var(--white);
  border-bottom: 1px solid rgba(36, 68, 92, 0.7);
}

.page-products .rec-steps li:last-child {
  border-bottom: 0;
}

.page-products .rec-steps .mono {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--orange);
}

/* ---------- 版本说明 ---------- */

.page-products .biz-ver {
  background: linear-gradient(180deg, var(--ink), var(--abyss) 100%);
}

.page-products .biz-ver__grid {
  display: grid;
  gap: 28px;
  margin-top: 32px;
  align-items: start;
}

.page-products .biz-ver__fig {
  margin: 0;
}

.page-products .biz-ver__body p {
  margin: 0 0 16px;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--mist);
}

.page-products .ver-legend {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .ver-legend li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--white);
}

.page-products .biz-ver__links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  padding-top: 6px;
}

/* ---------- 适用场景 ---------- */

.page-products .biz-scene {
  background: var(--abyss);
}

.page-products .scene-grid {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}

.page-products .scene-card {
  padding: 22px 20px;
  background: var(--panel);
  border: var(--biz-border);
  box-shadow: var(--biz-shadow);
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-products .scene-card__num {
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-products .scene-card h3 {
  margin: 0;
  font-size: 1.08rem;
  font-weight: 800;
  color: var(--white);
}

.page-products .scene-card p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-products .scene-card__path {
  margin-top: 4px;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--mint);
}

/* ---------- 资源下载 ---------- */

.page-products .biz-res__filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 26px;
}

.page-products .res-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-products .res-item {
  position: relative;
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 20px 20px 18px;
  background: var(--panel);
  border: var(--biz-border);
  box-shadow: var(--biz-shadow);
  transition: transform 180ms var(--ease), border-color 180ms var(--ease);
}

.page-products .res-item:hover {
  transform: translateY(-2px);
  border-color: var(--panel-2);
}

.page-products .res-item[hidden],
.page-products .res-item[data-filtered="false"] {
  display: none;
}

.page-products .res-item__type {
  position: absolute;
  top: 0;
  right: 0;
  padding: 3px 10px;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--abyss);
  background: var(--orange-soft);
}

.page-products .res-item__title {
  margin: 6px 0 0;
  font-size: 1.06rem;
  font-weight: 800;
  color: var(--white);
}

.page-products .res-item__text {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-products .res-item .tag {
  justify-self: start;
  margin-top: 4px;
}

.page-products .res-empty {
  margin: 20px 0 0;
  padding: 16px 18px;
  font-size: 0.92rem;
  color: var(--mist);
  background: var(--panel-2);
  border: var(--biz-border);
}

.page-products .biz-res__fig {
  margin-top: 30px;
}

/* ---------- 条件与支持 ---------- */

.page-products .biz-support {
  border-bottom: 0;
  background: linear-gradient(180deg, var(--ink), var(--abyss) 88%);
}

.page-products .support-grid {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}

.page-products .support-panel {
  padding: 24px 22px;
  background: var(--panel);
  border: var(--biz-border);
  box-shadow: var(--biz-shadow);
}

.page-products .support-panel h3 {
  margin: 0 0 16px;
  font-size: 1.08rem;
  font-weight: 800;
  color: var(--white);
}

.page-products .support-panel p {
  margin: 0 0 20px;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--mist);
}

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

.page-products .support-list li {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 12px;
  padding: 11px 0;
  border-top: 1px solid rgba(36, 68, 92, 0.7);
  font-size: 0.93rem;
  line-height: 1.7;
  color: var(--white);
}

.page-products .support-list li:last-child {
  border-bottom: 1px solid rgba(36, 68, 92, 0.7);
}

.page-products .support-list .mono {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--mint);
}

.page-products .support-panel--accent {
  background: linear-gradient(155deg, var(--panel-2), var(--panel));
  border-left: 3px solid var(--orange);
}

.page-products .support-panel__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-products .scene-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

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

  .page-products .support-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-products .biz-hero__inner {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-products .biz-hero__side {
    position: sticky;
    top: 24px;
  }

  .page-products .biz-tree {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    padding-left: 0;
    align-items: start;
  }

  .page-products .biz-tree::before,
  .page-products .biz-node::before {
    display: none;
  }

  .page-products .biz-node:nth-child(2) {
    margin-top: 18px;
  }

  .page-products .biz-node:nth-child(3) {
    margin-top: 36px;
  }

  .page-products .biz-entry__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(24px, 3.5vw, 44px);
    align-items: start;
  }

  .page-products .biz-rec__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(24px, 3.5vw, 44px);
    align-items: start;
  }

  .page-products .biz-ver__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(24px, 3.5vw, 44px);
  }

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

@media (min-width: 1180px) {
  .page-products .scene-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-products .biz-node,
  .page-products .res-item,
  .page-products .biz-step__cue::after,
  .page-products .biz-textlink {
    transition: none;
  }

  .page-products .biz-node:hover,
  .page-products .res-item:hover {
    transform: none;
  }
}
<<<END>>>