.page-products {
  --pp-gap: clamp(1rem, 2.5vw, 1.75rem);
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

/* ---------- 首屏 ---------- */

.page-products .page-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2.25rem, 6vw, 4.5rem) 0 clamp(1.75rem, 4vw, 3rem);
}

.page-products .page-hero::before {
  content: "";
  position: absolute;
  inset: -30% -10% auto -10%;
  height: 85%;
  background:
    radial-gradient(55% 65% at 16% 22%, var(--gold-soft), transparent 70%),
    radial-gradient(48% 58% at 88% 8%, var(--violet-soft), transparent 72%);
  pointer-events: none;
}

.page-products .hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.page-products .hero-lede {
  margin: 1.1rem 0 0;
  max-width: 48ch;
  font-size: clamp(1rem, 1.4vw, 1.1rem);
  line-height: 1.95;
  color: var(--paper-dim);
}

.page-products .hero-note {
  margin: 1.1rem 0 0;
  padding-left: 0.85rem;
  border-left: 2px solid var(--line);
  font-size: var(--fs-note);
  line-height: 1.9;
  color: var(--slate);
}

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

.page-products .stat-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-products .stat-item {
  padding: 0.95rem 1rem 1rem;
  background: var(--ink-night);
}

.page-products .stat-label {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--slate);
}

.page-products .stat-num {
  display: block;
  margin: 0.35rem 0 0;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--gold);
}

@media (min-width: 900px) {
  .page-products .hero-grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(260px, 1fr);
    align-items: end;
  }
}

/* ---------- 目录索引条 ---------- */

.page-products .sticky-index {
  z-index: 8;
  background: rgba(10, 12, 18, 0.92);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-products .index-inner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-products .index-inner::-webkit-scrollbar {
  display: none;
}

.page-products .index-label {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--slate);
}

.page-products .index-list {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .index-link {
  display: inline-block;
  white-space: nowrap;
  padding: 0.32rem 0.78rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--paper-dim);
  text-decoration: none;
  transition: border-color 0.22s var(--ease), color 0.22s var(--ease);
}

.page-products .index-link:hover,
.page-products .index-link:focus-visible {
  border-color: var(--gold);
  color: var(--gold);
}

@media (min-width: 900px) {
  .page-products .sticky-index {
    position: sticky;
    top: 4.75rem;
    backdrop-filter: blur(10px);
  }
}

/* ---------- 章节通用 ---------- */

.page-products .section-head {
  max-width: 62ch;
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.page-products .section-note {
  margin: 0.7rem 0 0;
  font-size: 0.94rem;
  line-height: 1.9;
  color: var(--slate);
}

.page-products #catalog,
.page-products #stock-def,
.page-products #service-tier,
.page-products .catalog-group {
  scroll-margin-top: 7.5rem;
}

/* ---------- 四系列总览带 ---------- */

.page-products .band-media {
  margin: 0 0 clamp(1.25rem, 3vw, 1.9rem);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-products .series-list {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(215px, 76%);
  gap: 1rem;
  margin: 0;
  padding: 0 0 0.8rem;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
}

.page-products .series-item {
  --series: var(--gold);
  scroll-snap-align: start;
  position: relative;
  padding: 1.15rem 1.1rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(180deg, rgba(243, 239, 230, 0.04), rgba(243, 239, 230, 0) 55%);
}

.page-products .series-item::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  border-radius: var(--radius-card) var(--radius-card) 0 0;
  background: var(--series);
}

.page-products .series-item--gold { --series: var(--gold); }
.page-products .series-item--cinnabar { --series: var(--cinnabar); }
.page-products .series-item--celadon { --series: var(--celadon); }
.page-products .series-item--violet { --series: var(--violet); }

.page-products .series-prefix {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--series);
}

.page-products .series-name {
  margin: 0.4rem 0 0;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-products .series-desc {
  margin: 0.55rem 0 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--slate);
}

.page-products .series-count {
  margin: 0.85rem 0 0;
  font-size: 0.86rem;
  color: var(--paper-dim);
}

.page-products .num {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--gold);
}

.page-products .health-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.35rem 0.6rem;
  margin: 0.7rem 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.8rem;
  color: var(--paper-dim);
}

.page-products .health-list li {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.page-products .dot {
  flex: none;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--slate);
}

.page-products .dot--on { background: var(--celadon); }
.page-products .dot--low { background: var(--cinnabar); }
.page-products .dot--restock { background: var(--gold); }
.page-products .dot--archive { background: var(--slate); }

@media (min-width: 860px) {
  .page-products .series-list {
    grid-auto-columns: minmax(0, 1fr);
    overflow: visible;
    scroll-snap-type: none;
    scrollbar-width: auto;
  }
}

/* ---------- 单品目录 ---------- */

.page-products .catalog-group + .catalog-group {
  margin-top: clamp(2rem, 5vw, 3.25rem);
}

.page-products .group--gold { --series: var(--gold); }
.page-products .group--cinnabar { --series: var(--cinnabar); }
.page-products .group--celadon { --series: var(--celadon); }
.page-products .group--violet { --series: var(--violet); }

.page-products .group-title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 0.7rem;
  margin: 0 0 1.1rem;
  padding: 0 0 0.7rem 0.85rem;
  border-left: 3px solid var(--series);
  border-bottom: 1px solid var(--line);
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--paper);
}

.page-products .group-code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  color: var(--series);
}

.page-products .group-meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--slate);
}

.page-products .card-grid {
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
  gap: var(--pp-gap);
}

.page-products .p-card {
  --series: var(--gold);
  padding: 1rem 1.05rem 1.05rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--series);
  border-radius: var(--radius-card);
  background: linear-gradient(180deg, rgba(243, 239, 230, 0.035), rgba(243, 239, 230, 0) 45%);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-products .p-card--gold { --series: var(--gold); }
.page-products .p-card--cinnabar { --series: var(--cinnabar); }
.page-products .p-card--celadon { --series: var(--celadon); }
.page-products .p-card--violet { --series: var(--violet); }

.page-products .p-card:hover,
.page-products .p-card:focus-within {
  border-top-color: var(--series);
  border-right-color: var(--series);
  border-bottom-color: var(--series);
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.38);
}

.page-products .p-card.is-archived {
  opacity: 0.78;
}

.page-products .card-media {
  margin: 0 0 0.9rem;
  border-radius: 10px;
  overflow: hidden;
}

.page-products .card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.page-products .card-code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--series);
}

.page-products .status {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  border: 1px solid currentColor;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
}

.page-products .status--on { color: var(--celadon); }
.page-products .status--low { color: var(--cinnabar); }
.page-products .status--restock { color: var(--gold); }
.page-products .status--archive { color: var(--slate); }

.page-products .card-name {
  margin: 0.65rem 0 0;
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-products .card-desc {
  margin: 0.5rem 0 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-products .level-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.9rem;
}

.page-products .level {
  flex: none;
  display: block;
}

.page-products .level rect {
  fill: var(--line);
}

.page-products .level rect.is-on {
  fill: var(--series);
}

.page-products .level-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--slate);
}

.page-products .card-details {
  margin-top: 0.9rem;
  padding-top: 0.7rem;
  border-top: 1px dashed var(--line);
}

.page-products .card-details summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--slate);
  transition: color 0.22s var(--ease);
}

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

.page-products .card-details summary::before {
  content: "[+]";
  color: var(--series);
}

.page-products .card-details[open] summary::before {
  content: "[−]";
}

.page-products .card-details summary:hover,
.page-products .card-details summary:focus-visible {
  color: var(--paper);
}

.page-products .card-facts {
  margin: 0.7rem 0 0;
  display: grid;
  gap: 0.4rem;
  font-size: 0.83rem;
}

.page-products .card-facts > div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.page-products .card-facts dt {
  color: var(--slate);
}

.page-products .card-facts dd {
  margin: 0;
  text-align: right;
  color: var(--paper-dim);
}

@media (min-width: 700px) {
  .page-products .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-products .card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 库存状态口径 ---------- */

.page-products .stock-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.page-products .stock-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
  margin: 1.4rem 0 0;
}

.page-products .stock-item {
  --sc: var(--line);
  padding: 0.9rem 1rem 1rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--sc);
  border-radius: 10px;
}

.page-products .stock-item--on { --sc: var(--celadon); }
.page-products .stock-item--low { --sc: var(--cinnabar); }
.page-products .stock-item--restock { --sc: var(--gold); }
.page-products .stock-item--archive { --sc: var(--slate); }

.page-products .stock-item dt {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper);
}

.page-products .stock-item dd {
  margin: 0.45rem 0 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-products .stock-media {
  margin: 0;
  border-radius: var(--radius-card);
  overflow: hidden;
}

@media (min-width: 620px) {
  .page-products .stock-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-products .stock-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(260px, 1fr);
    align-items: start;
  }
}

/* ---------- 响应窗口 ---------- */

.page-products .tier-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-products .tier-card {
  position: relative;
  padding: 1.2rem 1.15rem 1.3rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(180deg, rgba(227, 169, 60, 0.09), rgba(227, 169, 60, 0) 60%);
}

.page-products .tier-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--gold);
  border-radius: var(--radius-card) var(--radius-card) 0 0;
}

.page-products .tier-code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-products .tier-window {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  margin: 0.6rem 0 0;
  font-size: 0.95rem;
  color: var(--paper);
}

.page-products .tier-num {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 5vw, 2.6rem);
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1;
  color: var(--paper);
}

.page-products .tier-scope {
  margin: 0.7rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--slate);
}

.page-products .tier-use {
  margin: 0.7rem 0 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--paper-dim);
}

.page-products .tier-note {
  margin: clamp(1.4rem, 3vw, 2rem) 0 0;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  border-radius: 10px;
  font-size: 0.9rem;
  line-height: 1.9;
  color: var(--paper-dim);
}

.page-products .tier-note a {
  color: var(--gold);
  text-underline-offset: 3px;
}

@media (min-width: 760px) {
  .page-products .tier-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 延伸入口 ---------- */

.page-products .more-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-products .more-list li {
  display: grid;
  gap: 0.35rem;
  padding: 1rem 1.1rem;
  background: var(--ink-night);
}

.page-products .more-link {
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper);
  text-decoration: none;
  transition: color 0.22s var(--ease);
}

.page-products .more-link::after {
  content: " →";
  font-family: var(--font-mono);
  color: var(--gold);
}

.page-products .more-link:hover,
.page-products .more-link:focus-visible {
  color: var(--gold);
}

.page-products .more-desc {
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--slate);
}

@media (min-width: 760px) {
  .page-products .more-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1120px) {
  .page-products .more-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 焦点可见性 ---------- */

.page-products a:focus-visible,
.page-products summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  .page-products .p-card,
  .page-products .index-link,
  .page-products .more-link {
    transition: none;
  }
  .page-products .p-card:hover,
  .page-products .p-card:focus-within {
    transform: none;
  }
}