.page-products {
  --pg-gap: clamp(20px, 4vw, 40px);
  --pg-rule: 1px solid var(--grid-line);
  background: var(--paper-050);
  color: var(--ink-900);
}

.page-products .shell {
  min-width: 0;
}

/* ---------- 首屏 ---------- */
.page-products .products-hero {
  display: grid;
  gap: 32px;
  padding-block: clamp(28px, 5vw, 56px) clamp(40px, 7vw, 80px);
}

.page-products .products-hero__copy {
  min-width: 0;
}

.page-products .products-hero .display {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 7.2vw, 64px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  max-width: 15em;
}

.page-products .products-hero .lede {
  max-width: 34em;
}

.page-products .products-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-products .products-hero__figure {
  margin: 0;
  align-self: stretch;
}

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

@media (min-width: 920px) {
  .page-products .products-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: clamp(32px, 5vw, 64px);
  }
  .page-products .products-hero__figure {
    align-self: end;
  }
}

/* ---------- 目录 ---------- */
.page-products .catalog-head {
  max-width: 40em;
  margin-bottom: 32px;
}

.page-products .catalog-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--pg-rule);
}

.page-products .catalog-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px 20px;
  padding: 26px 0;
  border-bottom: var(--pg-rule);
  transition: background-color 0.24s var(--ease);
}

.page-products .catalog-code {
  font-family: var(--font-mono);
  font-size: 28px;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--brass-500);
}

.page-products .catalog-body {
  min-width: 0;
}

.page-products .catalog-body .h3 {
  font-family: var(--font-display);
  font-size: var(--fs-md);
  line-height: 1.3;
  margin: 0 0 8px;
}

.page-products .catalog-body p {
  margin: 0 0 6px;
  color: var(--ink-900);
}

.page-products .catalog-link {
  display: inline-block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--brass-700);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

.page-products .catalog-link:hover,
.page-products .catalog-link:focus-visible {
  color: var(--signal-orange);
}

.page-products .catalog-when {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--muted-600);
}

.page-products .catalog-when span {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--ink-green-600);
  background: var(--gold-tint);
  border-radius: 2px;
}

.page-products .catalog-tail {
  margin: 24px 0 0;
  font-size: var(--fs-sm);
  color: var(--muted-600);
}

.page-products .catalog-tail a {
  color: var(--brass-700);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (min-width: 820px) {
  .page-products .catalog-item {
    grid-template-columns: 88px minmax(0, 1fr) 220px;
    gap: 32px;
    align-items: start;
    padding: 32px 0;
  }
  .page-products .catalog-code {
    font-size: 40px;
  }
  .page-products .catalog-when {
    padding-top: 4px;
    border-left: var(--pg-rule);
    padding-left: 20px;
  }
}

/* ---------- 逐件说明 ---------- */
.page-products .guide-head {
  max-width: 40em;
  margin-bottom: 32px;
}

.page-products .guide-layout {
  display: grid;
  gap: 28px;
}

.page-products .guide-index {
  min-width: 0;
}

.page-products .guide-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-600);
}

.page-products .guide-index-list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-products .guide-index-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 12px;
  font-size: var(--fs-sm);
  color: var(--ink-green-600);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-products .guide-index-link:hover,
.page-products .guide-index-link:focus-visible {
  background: var(--gold-tint);
  border-bottom-color: var(--signal-orange);
  color: var(--ink-green-900);
}

.page-products .guide-index-code {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--brass-500);
}

.page-products .guide-panels {
  display: grid;
  gap: 28px;
  min-width: 0;
}

.page-products .guide-panel {
  position: relative;
  min-width: 0;
  padding: clamp(20px, 4vw, 40px);
  background: var(--paper-050);
  border: var(--pg-rule);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  scroll-margin-top: 110px;
}

.page-products .guide-panel .h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}

.page-products .guide-panel__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 14px;
  margin-bottom: 20px;
  border-bottom: 1px dashed var(--grid-line);
}

.page-products .guide-panel__tag {
  display: inline-block;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--brass-700);
  background: var(--gold-tint);
  border-radius: 2px;
}

.page-products .guide-panel__time {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  color: var(--muted-600);
}

.page-products .guide-panel__grid {
  display: grid;
  gap: 24px;
  margin-top: 20px;
}

.page-products .guide-panel__grid > * {
  min-width: 0;
}

.page-products .guide-panel__text p {
  margin: 0 0 14px;
}

.page-products .guide-panel__cta {
  margin-top: 20px;
}

.page-products .guide-figure {
  margin: 0;
  padding: 10px;
  background: var(--paper-100);
  border: var(--pg-rule);
}

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

.page-products .guide-figure figcaption {
  margin-top: 8px;
  font-size: var(--fs-xs);
  line-height: 1.6;
  color: var(--muted-600);
}

.page-products .guide-figure--wide {
  margin-top: 8px;
  margin-bottom: 24px;
}

/* 适用 / 换一件 */
.page-products .fit-line {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 0 0 10px;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--ink-green-900);
}

.page-products .fit-line__tag {
  flex: none;
  min-width: 52px;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  text-align: center;
  color: var(--paper-050);
  background: var(--ink-green-600);
  border-radius: 2px;
}

.page-products .fit-line--alt {
  color: var(--muted-600);
}

.page-products .fit-line--alt .fit-line__tag {
  color: var(--brass-700);
  background: var(--paper-100);
  border: 1px solid var(--grid-line);
}

/* 入口两步 */
.page-products .mini-steps {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
}

.page-products .mini-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--grid-line);
}

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

.page-products .mini-steps__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--brass-700);
  border: 1px solid var(--brass-500);
  border-radius: 50%;
}

.page-products .mini-steps p {
  margin: 0;
}

/* 六步流程 */
.page-products .step-flow {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-products .step-flow__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 14px 16px;
  background: var(--paper-100);
  border-left: 3px solid var(--brass-500);
}

.page-products .step-flow__no {
  font-family: var(--font-mono);
  font-size: var(--fs-md);
  line-height: 1;
  color: var(--brass-500);
}

.page-products .step-flow__item p {
  margin: 4px 0 0;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--muted-600);
}

.page-products .step-flow__item strong {
  color: var(--ink-900);
}

@media (min-width: 680px) {
  .page-products .step-flow {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
}

/* 环境三类 */
.page-products .env-list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .env-list__item {
  padding: 14px 16px;
  background: var(--paper-100);
  border: var(--pg-rule);
}

.page-products .env-list__name {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.06em;
  color: var(--brass-700);
  margin-bottom: 6px;
}

.page-products .env-list__item p {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--muted-600);
}

/* 问题类型分段控件 */
.page-products .type-picker {
  position: relative;
  margin-bottom: 20px;
  padding: 16px;
  border: var(--pg-rule);
  background: var(--paper-100);
}

.page-products .type-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.page-products .type-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.page-products .type-label {
  padding: 6px 14px;
  font-size: var(--fs-sm);
  color: var(--ink-green-600);
  background: var(--paper-050);
  border: 1px solid var(--grid-line);
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-products .type-label:hover {
  border-color: var(--brass-500);
}

.page-products .type-note {
  display: none;
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--ink-900);
  padding-left: 12px;
  border-left: 2px solid var(--signal-orange);
}

.page-products #issue-1:checked ~ .type-tabs .type-label[for="issue-1"],
.page-products #issue-2:checked ~ .type-tabs .type-label[for="issue-2"],
.page-products #issue-3:checked ~ .type-tabs .type-label[for="issue-3"],
.page-products #issue-4:checked ~ .type-tabs .type-label[for="issue-4"],
.page-products #issue-5:checked ~ .type-tabs .type-label[for="issue-5"] {
  color: var(--signal-orange);
  border-color: var(--signal-orange);
  background: var(--paper-050);
}

.page-products #issue-1:checked ~ .type-notes .type-note:nth-child(1),
.page-products #issue-2:checked ~ .type-notes .type-note:nth-child(2),
.page-products #issue-3:checked ~ .type-notes .type-note:nth-child(3),
.page-products #issue-4:checked ~ .type-notes .type-note:nth-child(4),
.page-products #issue-5:checked ~ .type-notes .type-note:nth-child(5) {
  display: block;
}

.page-products #issue-1:focus-visible ~ .type-tabs .type-label[for="issue-1"],
.page-products #issue-2:focus-visible ~ .type-tabs .type-label[for="issue-2"],
.page-products #issue-3:focus-visible ~ .type-tabs .type-label[for="issue-3"],
.page-products #issue-4:focus-visible ~ .type-tabs .type-label[for="issue-4"],
.page-products #issue-5:focus-visible ~ .type-tabs .type-label[for="issue-5"] {
  outline: 2px solid var(--ink-green-600);
  outline-offset: 2px;
}

/* 手风琴（入口折叠） */
.page-products .guide-accordion {
  margin-top: 22px;
  border-top: var(--pg-rule);
}

.page-products .guide-accordion .accordion-item {
  border-bottom: var(--pg-rule);
}

.page-products .guide-accordion .accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  font-weight: 600;
  text-align: left;
  color: var(--ink-green-900);
  background: transparent;
  border: 0;
  cursor: pointer;
}

.page-products .guide-accordion .accordion-trigger:hover {
  color: var(--brass-700);
}

.page-products .guide-accordion .accordion-icon {
  flex: none;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--brass-500);
  border-bottom: 2px solid var(--brass-500);
  transform: rotate(45deg);
  transition: transform 0.24s var(--ease);
}

.page-products .guide-accordion .accordion-trigger[aria-expanded="true"] .accordion-icon {
  transform: rotate(-135deg);
}

.page-products .guide-accordion .accordion-panel {
  padding: 0 0 18px;
}

.page-products .guide-accordion .accordion-panel p {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--muted-600);
}

/* 桌面布局：粘性索引 + 右栏面板 */
@media (min-width: 900px) {
  .page-products .guide-panel__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
    gap: 32px;
    align-items: start;
  }
  .page-products .guide-panel__grid--flip {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
  }
}

@media (min-width: 1040px) {
  .page-products .guide-layout {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }
  .page-products .guide-index {
    position: sticky;
    top: 104px;
  }
  .page-products .guide-index-list {
    flex-direction: column;
    overflow: visible;
    gap: 2px;
    padding-bottom: 0;
  }
  .page-products .guide-index-link {
    display: flex;
    padding: 10px 12px;
    border-bottom: 0;
    border-left: 2px solid transparent;
  }
  .page-products .guide-index-link:hover,
  .page-products .guide-index-link:focus-visible {
    border-left-color: var(--signal-orange);
    border-bottom-color: transparent;
  }
}

/* ---------- 下一步 ---------- */
.page-products .next-head {
  max-width: 40em;
  margin-bottom: 28px;
}

.page-products .next-grid {
  display: grid;
  gap: 16px;
}

.page-products .next-card {
  display: block;
  padding: 24px;
  background: var(--paper-100);
  border: var(--pg-rule);
  border-left: 3px solid var(--brass-500);
  text-decoration: none;
  color: inherit;
  transition: background-color 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-products .next-card:hover,
.page-products .next-card:focus-visible {
  background: var(--gold-tint);
  transform: translateY(-2px);
}

.page-products .next-card__code {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  color: var(--brass-700);
}

.page-products .next-card .h3 {
  font-family: var(--font-display);
  font-size: var(--fs-md);
  line-height: 1.35;
  margin: 0 0 8px;
}

.page-products .next-card p {
  margin: 0 0 14px;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--muted-600);
}

.page-products .next-card__go {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--signal-orange);
}

.page-products .products-next__note {
  margin: 24px 0 0;
  font-size: var(--fs-sm);
  color: var(--muted-600);
}

.page-products .products-next__note a {
  color: var(--brass-700);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (min-width: 780px) {
  .page-products .next-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .catalog-item,
  .page-products .next-card,
  .page-products .guide-index-link,
  .page-products .type-label,
  .page-products .guide-accordion .accordion-icon {
    transition: none;
  }
  .page-products .next-card:hover,
  .page-products .next-card:focus-visible {
    transform: none;
  }
}
<<<END>>>