.page-products {
  --prod-aside-w: 280px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: clip;
}

.page-products img {
  max-width: 100%;
  height: auto;
}

.page-products [id] {
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--header-h) + 2.5rem);
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
  background: linear-gradient(180deg, var(--paper-2) 0%, var(--paper) 78%);
}

.page-products .prod-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: -8%;
  width: 54%;
  height: 100%;
  background: var(--red);
  clip-path: polygon(22% 0, 100% 0, 100% 100%, 0 100%);
  z-index: 0;
}

.page-products .prod-hero__inner {
  position: relative;
  z-index: 1;
}

.page-products .prod-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 1.5rem;
}

.page-products .prod-hero__copy .display-title {
  margin: 0.5rem 0 0;
  max-width: 22ch;
}

.page-products .prod-hero__copy .lede {
  margin-top: 1.1rem;
  max-width: 60ch;
  color: var(--ink);
}

.page-products .prod-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

.page-products .prod-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem 1.5rem;
  margin: 2rem 0 0;
  padding-top: 1.25rem;
  border-top: 3px solid var(--ink);
}

.page-products .prod-hero__stats dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--slate);
}

.page-products .prod-hero__stats dd {
  margin: 0.2rem 0 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(20px, 2.4vw, 30px);
  line-height: 1.1;
  color: var(--night);
}

.page-products .prod-hero__visual {
  aspect-ratio: 16 / 11;
}

.page-products .prod-hero__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 双栏工作区 ---------- */
.page-products .prod-workbench__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.page-products .prod-aside {
  border-left: 3px solid var(--ink);
  padding-left: 1.1rem;
}

.page-products .prod-badge {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: 0.75rem;
  padding: 1rem 1.1rem;
  background: var(--night);
  color: var(--paper);
  border: 3px solid var(--ink);
  box-shadow: 6px 6px 0 var(--gold);
}

.page-products .prod-badge__ver {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.page-products .prod-badge__txt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--paper-70);
}

.page-products .prod-aside__nav {
  display: flex;
  flex-direction: column;
  margin-top: 1.75rem;
  border-top: 1px solid var(--line-strong);
}

.page-products .prod-aside__nav a {
  padding: 0.72rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.page-products .prod-aside__nav a:hover,
.page-products .prod-aside__nav a:focus-visible {
  color: var(--red);
  padding-left: 0.5rem;
}

.page-products .prod-aside__note {
  margin-top: 1.25rem;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 画布区块 ---------- */
.page-products .prod-canvas {
  display: flex;
  flex-direction: column;
}

.page-products .prod-block {
  padding-block: 2.25rem;
  border-top: 1px solid var(--line);
}

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

.page-products .prod-block .section-title {
  margin: 0.4rem 0 0;
}

.page-products .prod-block__lead {
  margin-top: 0.9rem;
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.75;
}

.page-products .prod-block__foot {
  margin-top: 1.25rem;
  font-size: 15px;
  color: var(--slate);
}

.page-products .prod-block__foot a,
.page-products .prod-fit__note a {
  color: var(--red);
  font-weight: 700;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

/* ---------- 入口列表 ---------- */
.page-products .entry-list {
  margin-top: 1.5rem;
}

.page-products .entry {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.75rem 1.1rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.22s var(--ease);
}

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

.page-products .entry:hover {
  background: rgba(217, 164, 25, 0.1);
}

.page-products .entry__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 700;
  line-height: 1;
  color: var(--red);
}

.page-products .entry__title {
  margin: 0 0 0.5rem;
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-products .entry__body p {
  margin: 0 0 0.7rem;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.75;
}

.page-products .entry__fit {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 14px;
  color: var(--slate);
}

/* ---------- 版本变化 ---------- */
.page-products .change-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-products .change-list > li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  padding: 1.1rem 1.2rem;
  background: var(--paper-2);
  border-left: 6px solid var(--emerald);
}

.page-products .change__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 18px;
  font-weight: 700;
  color: var(--emerald);
  padding-top: 0.2rem;
}

.page-products .change__body p {
  margin: 0.6rem 0 0;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.75;
}

.page-products .prod-changes__visual,
.page-products .prod-steps__visual,
.page-products .prod-fields__visual {
  margin: 1.75rem 0 0;
  aspect-ratio: 16 / 10;
}

.page-products .prod-changes__visual img,
.page-products .prod-steps__visual img,
.page-products .prod-fields__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 步骤 ---------- */
.page-products .prod-block--steps {
  padding-block: 3rem;
}

.page-products .step-track {
  display: grid;
  gap: 1rem;
  margin-top: 1.75rem;
}

.page-products .step {
  border: 3px solid var(--ink);
  background: var(--paper);
  box-shadow: 6px 6px 0 rgba(20, 22, 28, 0.12);
  transition: box-shadow 0.22s var(--ease), background 0.22s var(--ease);
}

.page-products .step[open] {
  background: var(--paper-2);
  box-shadow: 6px 6px 0 var(--red);
}

.page-products .step > summary {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  cursor: pointer;
  list-style: none;
  font-weight: 900;
  font-size: 17px;
  letter-spacing: -0.01em;
}

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

.page-products .step > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--red);
}

.page-products .step[open] > summary::after {
  content: "–";
  color: var(--emerald);
}

.page-products .step__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 20px;
  font-weight: 700;
  color: var(--red);
}

.page-products .step .disclosure-body {
  padding: 0 1.25rem 1.25rem;
}

.page-products .step .disclosure-body p {
  margin: 0 0 0.7rem;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.75;
}

.page-products .step__out {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
  padding-top: 0.7rem;
  border-top: 1px dashed var(--line-strong);
  font-size: 14px;
  color: var(--slate);
}

/* ---------- 数据表 ---------- */
.page-products .table-wrap {
  margin-top: 1.75rem;
  overflow-x: auto;
  border: 3px solid var(--ink);
  box-shadow: 6px 6px 0 rgba(20, 22, 28, 0.12);
  background: var(--paper);
}

.page-products .data-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 15px;
}

.page-products .data-table th,
.page-products .data-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.page-products .data-table thead th {
  background: var(--night);
  color: var(--paper);
  font-size: 13px;
  letter-spacing: 0.06em;
  border-bottom: 3px solid var(--ink);
}

.page-products .data-table tbody th {
  font-weight: 900;
  color: var(--night);
  white-space: nowrap;
}

.page-products .data-table tbody td {
  color: var(--ink);
}

.page-products .data-table tbody tr {
  transition: background 0.18s var(--ease);
}

.page-products .data-table tbody tr:hover {
  background: rgba(217, 164, 25, 0.18);
}

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

/* ---------- 版本演进 ---------- */
.page-products .prod-timeline {
  background: var(--night);
  color: var(--paper);
}

.page-products .prod-timeline .section-title {
  color: var(--paper);
  margin: 0.4rem 0 0;
}

.page-products .prod-timeline .eyebrow {
  color: var(--gold);
}

.page-products .prod-timeline__lead {
  margin-top: 0.9rem;
  max-width: 66ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--paper-70);
}

.page-products .timeline__visual {
  margin: 2rem 0 0;
  aspect-ratio: 16 / 7;
}

.page-products .timeline__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-products .timeline {
  list-style: none;
  margin: 2.25rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  position: relative;
}

.page-products .timeline__node {
  position: relative;
  padding-left: 2.25rem;
}

.page-products .timeline__node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 14px;
  height: 14px;
  background: var(--gold);
  transform: rotate(45deg);
}

.page-products .timeline__ver {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--gold);
}

.page-products .timeline__era {
  display: block;
  margin-top: 0.2rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--emerald-bright);
}

.page-products .timeline__title {
  margin: 0.65rem 0 0.4rem;
  font-size: 17px;
  font-weight: 900;
  color: var(--paper);
}

.page-products .timeline__node p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper-70);
}

/* ---------- 使用画像 ---------- */
.page-products .fit-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 1.75rem;
}

.page-products .fit {
  padding: 1.75rem;
  background: var(--paper-2);
  border: 3px solid var(--ink);
  box-shadow: 6px 6px 0 rgba(20, 22, 28, 0.12);
}

.page-products .fit .block-title {
  margin-top: 1rem;
}

.page-products .fit p {
  margin: 1rem 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.75;
}

.page-products .fit ul {
  margin: 1.1rem 0 0;
  padding-left: 1.15rem;
  display: grid;
  gap: 0.5rem;
  font-size: 15px;
  line-height: 1.7;
}

.page-products .fit ul li::marker {
  color: var(--red);
}

.page-products .fit--dark {
  background: var(--night);
  color: var(--paper);
}

.page-products .fit--dark .block-title {
  color: var(--paper);
}

.page-products .fit--dark p,
.page-products .fit--dark ul {
  color: var(--paper-70);
}

.page-products .fit--dark ul li::marker {
  color: var(--gold);
}

.page-products .prod-fit__note {
  margin-top: 1.5rem;
  font-size: 15px;
  color: var(--slate);
}

/* ---------- 结尾 ---------- */
.page-products .prod-cta__inner {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding: clamp(1.75rem, 4vw, 3rem);
  background: var(--red);
  color: var(--paper);
  border: 3px solid var(--ink);
  box-shadow: 8px 8px 0 var(--ink);
}

.page-products .prod-cta__inner::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 220px;
  height: 220px;
  background-image:
    linear-gradient(45deg, rgba(20, 22, 28, 0.22) 25%, transparent 25%, transparent 75%, rgba(20, 22, 28, 0.22) 75%),
    linear-gradient(45deg, rgba(20, 22, 28, 0.22) 25%, transparent 25%, transparent 75%, rgba(20, 22, 28, 0.22) 75%);
  background-size: 28px 28px;
  background-position: 0 0, 14px 14px;
  pointer-events: none;
}

.page-products .prod-cta__copy {
  position: relative;
  z-index: 1;
}

.page-products .prod-cta__copy .section-title {
  color: var(--paper);
  margin: 0;
}

.page-products .prod-cta__copy p {
  margin: 0.9rem 0 0;
  max-width: 60ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--paper-70);
}

.page-products .prod-cta__links {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-self: end;
}

.page-products .prod-cta__links .btn {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
}

.page-products .prod-cta__links .btn:hover,
.page-products .prod-cta__links .btn:focus-visible {
  background: var(--gold);
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--ink);
}

/* ---------- 响应式 ---------- */
@media (max-width: 899px) {
  .page-products .prod-hero::before {
    display: none;
  }
}

@media (min-width: 760px) {
  .page-products .entry {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 1rem 1.5rem;
  }
  .page-products .fit-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-products .prod-cta__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: end;
  }
}

@media (min-width: 900px) {
  .page-products .prod-hero__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3rem;
    align-items: center;
  }
  .page-products .prod-hero__visual {
    transform: translateY(1rem) rotate(-1.2deg);
  }
  .page-products .timeline__visual {
    aspect-ratio: 4 / 1;
  }
}

@media (min-width: 1024px) {
  .page-products .prod-workbench__grid {
    grid-template-columns: var(--prod-aside-w) minmax(0, 1fr);
    gap: 3.5rem;
  }
  .page-products .prod-aside {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
    align-self: start;
  }
  .page-products .timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    padding-top: 2.75rem;
  }
  .page-products .timeline::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 6px;
    height: 3px;
    background: linear-gradient(90deg, var(--red), var(--gold), var(--emerald-bright));
  }
  .page-products .timeline__node {
    padding-left: 0;
    padding-right: 1.5rem;
  }
  .page-products .timeline__node::before {
    top: -2.9rem;
    left: 0;
    background: var(--paper);
    border: 3px solid var(--gold);
    width: 16px;
    height: 16px;
  }
  .page-products .timeline__node:last-child {
    padding-right: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products *,
  .page-products *::before,
  .page-products *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
  .page-products .prod-hero__visual {
    transform: none;
  }
}