.page-products {
  --sticky-top: 64px;
  --rail-w: 296px;
}

/* ---------- 首屏 ---------- */
.page-products .tools-hero {
  padding-top: clamp(16px, 3vw, 28px);
  padding-bottom: clamp(10px, 2vw, 18px);
}

.page-products .tools-hero__title {
  margin: 10px 0 16px;
  font-size: clamp(30px, 6.4vw, 54px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--paper);
}

.page-products .tools-hero__lead {
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--silver);
}

.page-products .hero-facts {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 18px;
}

@media (min-width: 680px) {
  .page-products .hero-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-products .hero-facts__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.page-products .hero-facts__num {
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--signal);
}

.page-products .hero-facts__label {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 分屏骨架 ---------- */
.page-products .tools-board__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

@media (min-width: 1000px) {
  .page-products .tools-board__inner {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-products .filter-rail {
    position: sticky;
    top: var(--sticky-top);
    max-height: calc(100vh - var(--sticky-top) - 28px);
    overflow-y: auto;
    padding-right: 4px;
    scrollbar-width: thin;
  }
}

/* ---------- 筛选台 ---------- */
.page-products .filter-rail {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-products .filter-rail__block {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  padding: 16px;
}

.page-products .filter-rail__title {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-products .chip-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-products .chip {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  font-family: var(--mono);
  font-size: 13px;
  color: var(--silver);
  text-decoration: none;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-products .chip:hover,
.page-products .chip:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
  background: rgba(182, 255, 60, 0.08);
}

.page-products .legend-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-products .legend-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--silver);
}

.page-products .legend-bar {
  display: block;
  width: 4px;
  flex: 0 0 4px;
  border-radius: var(--pill);
  align-self: center;
}

.page-products .legend-bar--stock {
  height: 20px;
  background: var(--signal);
}

.page-products .legend-bar--low {
  height: 16px;
  background: var(--amber);
}

.page-products .legend-bar--transit {
  height: 13px;
  background: var(--grass);
}

.page-products .legend-bar--reserve {
  height: 10px;
  background: var(--silver);
}

.page-products .legend-bar--eol {
  height: 7px;
  background: var(--amber-deep);
}

.page-products .filter-rail__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 12px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .filter-rail__figure {
  margin: 0;
}

/* ---------- 右侧内容流 ---------- */
.page-products .tools-stream {
  display: flex;
  flex-direction: column;
  gap: 30px;
  min-width: 0;
}

.page-products .tools-banner {
  margin: 0;
}

.page-products .stream-bar {
  position: sticky;
  top: var(--sticky-top);
  z-index: 5;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 18px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-bottom: 1px solid var(--signal);
  border-radius: var(--radius-md);
  background: rgba(20, 26, 22, 0.9);
  backdrop-filter: blur(10px);
}

.page-products .stream-bar__count {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.01em;
  color: var(--signal);
}

.page-products .stream-bar__hint {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
}

/* ---------- 三项字段说明 ---------- */
.page-products .field-note {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  padding: clamp(18px, 3vw, 28px);
}

.page-products .field-note__title {
  margin: 0 0 10px;
  font-size: clamp(20px, 3vw, 26px);
  color: var(--paper);
}

.page-products .field-note__lead {
  margin: 0 0 18px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--silver);
}

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

.page-products .field-note__list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--silver);
}

.page-products .field-note__idx {
  font-size: 12px;
  color: var(--signal);
}

.page-products .field-note__text strong {
  color: var(--paper);
  font-weight: 700;
}

.page-products .field-note__figure {
  margin: 22px 0 0;
}

/* ---------- 年度分组 ---------- */
.page-products .year-group {
  scroll-margin-top: calc(var(--sticky-top) + 70px);
}

.page-products .year-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  padding-bottom: 12px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-products .year-group__title {
  margin: 0;
  font-size: clamp(22px, 3vw, 30px);
  color: var(--paper);
  letter-spacing: -0.01em;
}

.page-products .year-group__title .mono {
  color: var(--signal);
}

.page-products .year-group__meta {
  margin: 0;
  flex: 1 1 260px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .handset-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

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

/* ---------- 档案卡 ---------- */
.page-products .handset {
  position: relative;
  padding: 16px 16px 14px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  overflow: hidden;
  transition: border-color 200ms var(--ease), transform 200ms var(--ease);
}

.page-products .handset:hover {
  border-color: #2A342C;
  transform: translateY(-2px);
}

.page-products .handset__bar {
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  border-radius: 0 0 4px 0;
}

.page-products .handset[data-status="stock"] .handset__bar {
  height: 92%;
  background: var(--signal);
}

.page-products .handset[data-status="low"] .handset__bar {
  height: 68%;
  background: var(--amber);
}

.page-products .handset[data-status="transit"] .handset__bar {
  height: 54%;
  background: var(--grass);
}

.page-products .handset[data-status="reserve"] .handset__bar {
  height: 40%;
  background: var(--silver);
}

.page-products .handset[data-status="eol"] .handset__bar {
  height: 22%;
  background: var(--amber-deep);
}

.page-products .handset__status {
  margin: 0 0 10px;
}

.page-products .tag--stock {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--ink);
}

.page-products .tag--low {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink);
}

.page-products .tag--transit {
  background: var(--grass);
  border-color: var(--grass);
  color: var(--ink);
}

.page-products .tag--reserve {
  background: transparent;
  border: 1px solid var(--silver);
  color: var(--silver);
}

.page-products .tag--eol {
  background: transparent;
  border: 1px solid var(--amber-deep);
  color: var(--amber-deep);
}

.page-products .handset__name {
  margin: 0 0 12px;
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-products .handset__fields {
  margin: 0 0 12px;
  display: grid;
  gap: 6px;
}

.page-products .handset__field {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--line);
  font-size: 12.5px;
  line-height: 1.6;
}

.page-products .handset__field dt {
  color: var(--muted);
  flex: 0 0 auto;
}

.page-products .handset__field dd {
  margin: 0;
  color: var(--silver);
  text-align: right;
}

.page-products .handset__scene {
  margin: 0 0 10px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--silver);
}

.page-products .handset__more {
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.page-products .handset__summary {
  font-size: 12.5px;
  color: var(--grass);
  cursor: pointer;
  list-style: none;
}

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

.page-products .handset__summary::before {
  content: "+ ";
  color: var(--signal);
}

.page-products .handset__more[open] .handset__summary::before {
  content: "− ";
}

.page-products .handset__detail {
  margin: 10px 0 0;
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-products .handset__more .copy-chip {
  margin-top: 12px;
}

.page-products .handset-grid__figure {
  margin: 0;
  grid-column: 1 / -1;
}

.page-products .handset-grid__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 280px;
  object-fit: cover;
}

/* ---------- 早期年度行 ---------- */
.page-products .archive-rows {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  overflow: hidden;
}

.page-products .archive-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

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

.page-products .archive-row__year {
  color: var(--paper);
  font-weight: 700;
}

.page-products .archive-row__desc {
  color: var(--muted);
  line-height: 1.7;
}

@media (max-width: 520px) {
  .page-products .archive-row {
    grid-template-columns: 56px minmax(0, 1fr);
    row-gap: 6px;
  }

  .page-products .archive-row .tag {
    grid-column: 2;
    justify-self: start;
  }
}

/* ---------- 档位 ---------- */
.page-products .tier-grid {
  margin-top: 26px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

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

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

.page-products .tier-card {
  scroll-margin-top: calc(var(--sticky-top) + 24px);
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
}

.page-products .tier-card__no {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--signal);
}

.page-products .tier-card__name {
  margin: 0;
  font-size: 21px;
  color: var(--paper);
}

.page-products .tier-card__series {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--grass);
}

.page-products .tier-card__who {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--silver);
}

.page-products .tier-card__scene {
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 代际谱系 ---------- */
.page-products .lineage__viz {
  margin-top: 26px;
  padding: 22px clamp(14px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(182, 255, 60, 0.07), rgba(182, 255, 60, 0) 62%),
    var(--panel);
}

.page-products .lineage__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-products .lineage__caption {
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .lineage__figure {
  margin: 22px 0 0;
}

/* ---------- 老机型支持 ---------- */
.page-products .legacy__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 26px;
}

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

@media (min-width: 1080px) {
  .page-products .legacy__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-products .legacy-item {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
}

.page-products .legacy-item__num {
  display: block;
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--signal);
}

.page-products .legacy-item__title {
  margin: 10px 0 8px;
  font-size: 15px;
  color: var(--paper);
}

.page-products .legacy-item__text {
  margin: 0;
  font-size: 13px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 咨询引导 ---------- */
.page-products .start-cta__inner {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: clamp(22px, 4vw, 40px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(120deg, rgba(182, 255, 60, 0.12), rgba(20, 26, 22, 0.92) 58%),
    var(--panel);
}

@media (min-width: 900px) {
  .page-products .start-cta__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
  }
}

.page-products .start-cta__copy {
  max-width: 60ch;
}

.page-products .start-cta__title {
  margin: 0 0 10px;
  font-size: clamp(20px, 3vw, 26px);
  color: var(--paper);
}

.page-products .start-cta__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--silver);
}

.page-products .start-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  flex: 0 0 auto;
}

@media (max-width: 719px) {
  .page-products .start-cta__actions .btn {
    flex: 1 1 100%;
    text-align: center;
  }
}