.page-products {
  --pp-sect-gap: clamp(48px, 8vw, 100px);
  --pp-card-accent: var(--copper);
  background: var(--ink-deep);
  color: var(--text-base);
  font-family: var(--font-body);
}

.page-products .prod-hero {
  position: relative;
  padding-top: clamp(20px, 4vw, 36px);
  padding-bottom: clamp(20px, 4vw, 32px);
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-products .hero-mark {
  position: absolute;
  top: 18px;
  right: -24px;
  width: 180px;
  height: 180px;
  color: var(--copper);
  opacity: 0.18;
  pointer-events: none;
}

.page-products .prod-hero .breadcrumb {
  margin-bottom: clamp(20px, 4vw, 36px);
}

.page-products .prod-hero-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
}

.page-products .prod-hero-copy h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 7vw, 3.8rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 12px 0 18px;
  max-width: 14em;
}

.page-products .prod-hero-copy .lede {
  color: var(--text-dim);
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  max-width: 46ch;
  margin: 0;
}

.page-products .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-products .prod-hero-media {
  margin: 0;
}

.page-products .prod-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line-soft);
  filter: saturate(0.85) brightness(0.95);
}

.page-products .hero-stats {
  list-style: none;
  margin: clamp(28px, 5vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(16px, 3vw, 28px);
}

.page-products .stat-item {
  position: relative;
  padding-top: 16px;
}

.page-products .stat-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 26px;
  height: 2px;
  background: var(--copper);
}

.page-products .stat-value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.15rem, 3.2vw, 1.6rem);
  color: var(--copper-bright);
  letter-spacing: 0.02em;
}

.page-products .stat-label {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-faint);
}

.page-products .prod-body {
  padding-top: clamp(30px, 5vw, 56px);
  padding-bottom: clamp(40px, 6vw, 80px);
}

/* 左侧粘性索引 */
.page-products .prod-rail {
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 14px;
  margin-bottom: clamp(26px, 5vw, 44px);
  min-width: 0;
}

.page-products .rail-heading {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--copper);
  margin: 0 0 10px;
}

.page-products .rail-list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-products .rail-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line-soft);
  color: var(--text-dim);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-products .rail-link .mono {
  font-size: 11px;
  color: var(--copper);
}

.page-products .rail-link:hover {
  color: var(--paper);
  border-color: var(--line);
}

.page-products .rail-link[aria-current="true"] {
  background: var(--copper-bright);
  border-color: var(--copper-bright);
  color: var(--ink-black);
}

.page-products .rail-link[aria-current="true"] .mono {
  color: var(--ink-black);
}

.page-products .rail-foot {
  display: none;
}

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

.page-products .rail-foot .copy-chip,
.page-products .copy-chip {
  font-family: var(--font-mono);
  font-size: 12.5px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--paper);
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-products .copy-chip:hover {
  border-color: var(--copper-bright);
  color: var(--copper-bright);
}

.page-products .copy-chip[data-copied] {
  background: var(--copper-bright);
  border-color: var(--copper-bright);
  color: var(--ink-black);
}

/* 章节通用 */
.page-products .prod-section {
  padding-top: var(--pp-sect-gap);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

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

.page-products .prod-section-head {
  margin-bottom: clamp(18px, 3vw, 30px);
  max-width: 64ch;
}

.page-products .prod-num {
  display: block;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--copper);
  margin-bottom: 10px;
}

.page-products .prod-section h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.45rem, 3.6vw, 2.25rem);
  line-height: 1.26;
  color: var(--paper);
  margin: 0 0 12px;
}

.page-products .prod-section-head p {
  margin: 0;
  color: var(--text-dim);
  font-size: clamp(15px, 1.6vw, 16.5px);
  line-height: 1.85;
}

/* 快速定位 */
.page-products .jump-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(16px, 3vw, 24px);
}

.page-products .jump-chip {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 7px 12px;
  border: 1px solid var(--line-soft);
  color: var(--text-dim);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-products .jump-chip:hover {
  color: var(--paper);
  border-color: var(--copper);
  background: rgba(184, 137, 78, 0.14);
}

/* 四条产品线 */
.page-products .line-grid {
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-products .line-card {
  position: relative;
  background: var(--ink-green);
  padding: clamp(18px, 3vw, 26px);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-products .line-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--pp-card-accent);
}

.page-products .line-card--hall {
  --pp-card-accent: var(--copper);
}

.page-products .line-card--book {
  --pp-card-accent: var(--copper-bright);
}

.page-products .line-card--record {
  --pp-card-accent: var(--cinnabar);
}

.page-products .line-card--mobile {
  --pp-card-accent: var(--paper-2);
}

.page-products .line-card-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-products .line-num {
  font-size: 11px;
  color: var(--pp-card-accent);
  letter-spacing: 0.12em;
}

.page-products .line-name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--paper);
  margin: 0;
}

.page-products .line-role {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--copper);
}

.page-products .line-desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-products .line-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 2px 0 0;
  padding: 0;
}

.page-products .line-tags li {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 8px;
  border: 1px solid var(--line-soft);
  color: var(--text-faint);
}

.page-products .line-link {
  margin-top: auto;
  padding-top: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--copper-bright);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  align-self: flex-start;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-products .line-link::after {
  content: " ↓";
}

.page-products .line-link:hover {
  color: var(--paper);
  border-bottom-color: var(--copper);
}

/* 图文双栏 */
.page-products .prod-split {
  display: grid;
  gap: clamp(20px, 4vw, 40px);
  align-items: start;
}

.page-products .prod-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .prod-list li {
  position: relative;
  padding-left: 26px;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.85;
}

.page-products .prod-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 12px;
  height: 1px;
  background: var(--copper);
}

.page-products .prod-list strong {
  color: var(--paper);
  font-weight: 600;
}

.page-products .prod-note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--line);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-faint);
}

.page-products .prod-inline-link {
  color: var(--copper-bright);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  margin-left: 6px;
  white-space: nowrap;
}

.page-products .prod-inline-link:hover {
  color: var(--paper);
  border-bottom-color: var(--copper-bright);
}

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

.page-products .media-frame {
  border: 1px solid var(--line-soft);
  overflow: hidden;
  background: var(--ink-green);
}

.page-products .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.96);
}

.page-products .prod-figure figcaption {
  margin-top: 10px;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--text-faint);
}

/* 记录台步骤 */
.page-products .flow-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .flow-step {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 14px 0;
  border-top: 1px solid var(--line-soft);
}

.page-products .flow-step:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-products .flow-step-num {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cinnabar);
}

.page-products .flow-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-products .flow-step strong {
  color: var(--paper);
  font-weight: 600;
}

/* 五维对比 */
.page-products .compare-block {
  background: var(--paper);
  color: var(--ink-black);
  padding: clamp(18px, 3.4vw, 34px);
  border-left: 3px solid var(--copper);
}

.page-products .compare-block .prod-section-head {
  max-width: 70ch;
}

.page-products .compare-block .prod-num {
  color: var(--cinnabar);
}

.page-products .compare-block h2 {
  color: var(--ink-black);
}

.page-products .compare-block .prod-section-head p {
  color: var(--muted);
}

.page-products .compare-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-top: 6px;
  border: 1px solid rgba(140, 104, 59, 0.35);
}

.page-products .compare-caption {
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
  padding: 10px 14px;
  background: var(--paper-2);
  border-bottom: 1px solid rgba(140, 104, 59, 0.35);
}

.page-products .compare-table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-size: 13.5px;
}

.page-products .compare-table th,
.page-products .compare-table td {
  text-align: left;
  vertical-align: top;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(140, 104, 59, 0.3);
}

.page-products .compare-table thead th {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-black);
  background: var(--paper-2);
  border-bottom: 2px solid var(--copper);
  white-space: nowrap;
}

.page-products .compare-table tbody th {
  position: sticky;
  left: 0;
  background: var(--paper);
  font-weight: 600;
  font-size: 13px;
  white-space: nowrap;
  border-right: 1px solid rgba(140, 104, 59, 0.3);
}

.page-products .compare-table tbody td {
  color: var(--ink-black);
  line-height: 1.65;
}

.page-products .compare-table tbody tr:hover th,
.page-products .compare-table tbody tr:hover td {
  background: #efe5d3;
}

.page-products .compare-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

/* 安装指南 */
.page-products .install-grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  align-items: start;
}

.page-products .install-sub {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--copper);
}

.page-products .compat-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.page-products .compat-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-products .compat-os {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--paper);
}

.page-products .compat-ver {
  font-size: 13px;
  color: var(--text-dim);
}

.page-products .version-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
}

.page-products .version-label {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--copper);
}

.page-products .install-details {
  border-top: 1px solid var(--line-soft);
}

.page-products .install-details details {
  border-bottom: 1px solid var(--line-soft);
}

.page-products .install-summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 15px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

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

.page-products .install-summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--copper);
}

.page-products .install-details details[open] .install-summary {
  color: var(--copper-bright);
}

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

.page-products .install-summary:hover {
  color: var(--copper-bright);
}

.page-products .install-body {
  margin: 0;
  padding: 0 0 18px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-dim);
}

/* 测试版记录 */
.page-products .beta-panel {
  display: grid;
  gap: clamp(20px, 4vw, 36px);
  padding: clamp(18px, 3.4vw, 32px);
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(184, 137, 78, 0.12), rgba(23, 63, 53, 0.6) 55%);
}

.page-products .beta-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .beta-steps li {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-products .beta-steps .mono {
  font-size: 11px;
  color: var(--cinnabar);
  padding-top: 3px;
}

.page-products .beta-steps strong {
  color: var(--paper);
  font-weight: 600;
}

.page-products .beta-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-products .beta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

/* 场景选择 */
.page-products .scenario-list {
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-products .scenario-row {
  background: var(--ink-green);
  display: grid;
  gap: 8px;
  padding: clamp(16px, 3vw, 22px);
}

.page-products .scenario-num {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--copper);
}

.page-products .scenario-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--paper);
  margin: 0;
}

.page-products .scenario-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-products .scenario-pick {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--copper-bright);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  justify-self: start;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .scenario-pick:hover {
  color: var(--paper);
  border-bottom-color: var(--copper-bright);
}

.page-products .closing-cta {
  margin-top: clamp(36px, 6vw, 68px);
  padding: clamp(22px, 4vw, 36px);
  border: 1px solid var(--line);
  background: var(--ink-green);
  display: grid;
  gap: 18px;
}

.page-products .closing-cta h2 {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  font-weight: 800;
  color: var(--paper);
  margin: 0 0 8px;
}

.page-products .closing-cta p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-dim);
  max-width: 52ch;
}

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

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

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

  .page-products .scenario-row {
    grid-template-columns: 56px minmax(0, 1fr);
    align-items: baseline;
    column-gap: 14px;
  }

  .page-products .scenario-desc {
    grid-column: 2;
  }

  .page-products .scenario-pick {
    grid-column: 2;
  }
}

@media (min-width: 860px) {
  .page-products .prod-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-products .prod-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

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

  .page-products .install-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }

  .page-products .beta-panel {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-products .scenario-row {
    grid-template-columns: 56px minmax(0, 0.8fr) minmax(0, 1.4fr) auto;
    align-items: center;
    column-gap: 20px;
  }

  .page-products .scenario-desc,
  .page-products .scenario-pick {
    grid-column: auto;
  }

  .page-products .closing-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-products .prod-body {
    display: grid;
    grid-template-columns: 226px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 60px);
    align-items: start;
  }

  .page-products .prod-rail {
    position: sticky;
    top: calc(var(--header-h) + 20px);
    align-self: start;
    border-bottom: 0;
    padding-bottom: 0;
    margin-bottom: 0;
    max-height: calc(100vh - var(--header-h) - 40px);
    overflow-y: auto;
  }

  .page-products .rail-list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-products .rail-link {
    border: 0;
    border-left: 1px solid var(--line-soft);
    padding: 9px 12px;
    white-space: normal;
    line-height: 1.5;
  }

  .page-products .rail-link:hover {
    background: rgba(184, 137, 78, 0.1);
  }

  .page-products .rail-link[aria-current="true"] {
    background: transparent;
    border-left: 2px solid var(--copper-bright);
    color: var(--copper-bright);
  }

  .page-products .rail-link[aria-current="true"] .mono {
    color: var(--copper-bright);
  }

  .page-products .rail-foot {
    display: block;
    margin-top: 22px;
    padding-top: 14px;
    border-top: 1px solid var(--line-soft);
  }

  .page-products .rail-foot .mono {
    font-size: 10.5px;
    letter-spacing: 0.18em;
    color: var(--copper);
    margin: 0 0 8px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-products .rail-link,
  .page-products .jump-chip,
  .page-products .line-link,
  .page-products .scenario-pick,
  .page-products .copy-chip,
  .page-products .install-summary,
  .page-products .prod-inline-link {
    transition: none;
  }
}
<<<END>>>